[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN104791946B - Air-conditioning system and its control method, the outdoor unit of air-conditioning system - Google Patents

Air-conditioning system and its control method, the outdoor unit of air-conditioning system Download PDF

Info

Publication number
CN104791946B
CN104791946B CN201410028602.8A CN201410028602A CN104791946B CN 104791946 B CN104791946 B CN 104791946B CN 201410028602 A CN201410028602 A CN 201410028602A CN 104791946 B CN104791946 B CN 104791946B
Authority
CN
China
Prior art keywords
frequency
changeable compressor
saturation temperature
refrigerant saturation
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410028602.8A
Other languages
Chinese (zh)
Other versions
CN104791946A (en
Inventor
罗彬�
魏富党
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea HVAC Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201410028602.8A priority Critical patent/CN104791946B/en
Priority to US14/472,049 priority patent/US9879893B2/en
Publication of CN104791946A publication Critical patent/CN104791946A/en
Application granted granted Critical
Publication of CN104791946B publication Critical patent/CN104791946B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/10—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a kind of air-conditioning system, including：Indoor unit；And outdoor unit, the outdoor unit further include：Frequency-changeable compressor；And controller, the controller carry out frequency control according to the operating parameter of the frequency-changeable compressor and independently of the indoor unit to the frequency-changeable compressor.The controller of outdoor unit in the air-conditioning system carries out frequency control independently of indoor unit and to the frequency-changeable compressor of outdoor unit so that the structure of air-conditioning system becomes simple, greatly reduces cost.The invention also discloses a kind of air conditioner system control method, a kind of outdoor unit of air-conditioning system and a kind of air-conditioning systems of the outdoor unit including the air-conditioning system.

Description

Air-conditioning system and its control method, the outdoor unit of air-conditioning system
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air-conditioning system and air conditioner system control method and air-conditioning The outdoor unit of system.
Background technology
With the continuous development of air-conditioning technical, DC frequency converting air-conditioner is increasingly welcome be subject to market, and sales volume also exists Fast lifting.At present, convertible frequency air-conditioner in the market is required to mating installation, and indoor unit, outdoor unit need special mating communication Mode realizes that the compressor to outdoor unit controls.Therefore, indoor unit, outdoor unit installation are it has to be ensured that synchronous, mating.
As shown in Figure 1A, outdoor unit must be received from room the framework of existing frequency-conversion air-conditioning system during the work time A series of signals such as switching on and shutting down, temperature setting, the indoor temperature of the indoor unit for the specific transmission rule that interior machine is sent or by room Interior machine treated signal, so as to realize that the compressor for controlling outdoor unit is run with specific frequency, and at any time according to room The interior running frequency for changing to adjust compressor.In the prior art, it is necessary to which indoor unit sends corresponding signal to outdoor unit, ability Complete the control to all parts in outdoor unit so that the structure of air-conditioning system is sufficiently complex, with high costs.Therefore, it is existing Air-conditioning system needs are improved.
The content of the invention
The purpose of the present invention is intended at least solve above-mentioned technological deficiency.
For this purpose, first purpose of the present invention is to propose a kind of air-conditioning system, the control of the outdoor unit in the air-conditioning system Device processed carries out frequency control independently of indoor unit and to the frequency-changeable compressor of outdoor unit so that the structure of air-conditioning system becomes letter It is single, greatly reduce cost.
Second object of the present invention is to propose a kind of air conditioner system control method.Third object of the present invention exists In proposing a kind of outdoor unit of air-conditioning system.Fourth object of the present invention is to have also been proposed a kind of air-conditioning system.
In order to achieve the above objectives, a kind of air-conditioning system that first aspect present invention embodiment proposes, including：Indoor unit；With And outdoor unit, the outdoor unit include：Frequency-changeable compressor；And controller, the controller is according to the fortune of the frequency-changeable compressor Row parameter and independently of the indoor unit and to the frequency-changeable compressor carry out frequency control.
Air-conditioning system according to embodiments of the present invention, the controller of the outdoor unit in air-conditioning system is according to frequency-changeable compressor Operating parameter carries out frequency control independently of indoor unit and to frequency-changeable compressor, is specifically led to without indoor unit and outdoor unit It interrogates to transmit corresponding control parameter so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
According to one embodiment of present invention, the outdoor unit further includes：Communicator, the communicator are remotely controlled for receiving The switching on and shutting down instruction and mode selection command that device, line control machine directly transmit or the indoor unit is sent, wherein, the controller root According to the frequency-changeable compressor operating parameter and the corresponding operating mode of the mode selection command to the frequency-changeable compressor into Row frequency control.
According to one embodiment of present invention, the outdoor unit further includes：It is arranged on the frequency-changeable compressor inlet First pressure sensor, the first pressure sensor generate first pressure detection letter when the operating mode is refrigeration mode Number.
According to one embodiment of present invention, the outdoor unit further includes：It is arranged on the frequency-changeable compressor exit Second pressure sensor, the second pressure sensor generate second pressure detection letter when the operating mode is heating mode Number.
According to one embodiment of present invention, the controller selects the first pressure to detect according to the operating mode One of signal and second pressure detection the signal current refrigerant saturation temperature of generation, and target refrigerant saturation temperature is obtained, and according to The current refrigerant saturation temperature, the target refrigerant saturation temperature carry out frequency control to the frequency-changeable compressor, wherein, During the frequency control of the frequency-changeable compressor, the controller is according to the operating parameter of the frequency-changeable compressor to described Target refrigerant saturation temperature is adjusted.
According to one embodiment of present invention, the outdoor unit further includes：Temperature sensor, the temperature sensor detection The current environmental temperature of the outdoor unit local environment, wherein, if the outdoor unit opens for the first time within the default work period When dynamic, the controller determines the target refrigerant saturation temperature according to the current environmental temperature of the outdoor unit.
According to one embodiment of present invention, the controller satisfies the target refrigerant after adjustment when shutting down Initial target refrigerant saturation temperature during with temperature as outdoor unit start next time.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The start-stop time of row time and the frequency-changeable compressor in the first preset time period.
According to one embodiment of present invention, it is more than or equal to first time threshold value in the run time of the frequency-changeable compressor And start-stop time of the frequency-changeable compressor in first preset time period be more than or equal to the first preset times threshold value when, institute It states controller and adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor Row time and the running frequency or running frequency of the frequency-changeable compressor.
According to one embodiment of present invention, it is more than or equal to the second time threshold in the run time of the frequency-changeable compressor When, the controller obtains the current operation frequency of the frequency-changeable compressor or current running current and the second preset time respectively Running frequency or running current before section；Operation before the current operation frequency is less than second preset time period When frequency or the current running current are less than the running current before second preset time period, the controller is kept The target refrigerant saturation temperature is constant, and before the current operation frequency is more than or equal to second preset time period When running frequency or the current running current are more than or equal to the running current before second preset time period, the control Device processed adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The start-stop time of row time and the frequency-changeable compressor in the 3rd preset time period, wherein in the fortune of the frequency-changeable compressor The row time is more than or equal to the 3rd time threshold, and start-stop time of the frequency-changeable compressor in the 3rd preset time period is more than It is described equal to the second preset times threshold value, and when the target refrigerant saturation temperature is greater than or equal to default saturation temperature threshold value Controller adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor Row time and the running frequency or running current of the frequency-changeable compressor, wherein the run time in the frequency-changeable compressor is big In equal to the 4th time threshold, and the current operation frequency of the frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described When the current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, the controller is according to described in the adjustment of default step-length Target refrigerant saturation temperature.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The row time, wherein when the run time of the frequency-changeable compressor is not stopped more than or equal to the 5th time threshold and the frequency-changeable compressor When crossing machine, the controller adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, for the controller after the switching on and shutting down instruction is received, delay is default Time starts shooting or shutdown.
In order to achieve the above objectives, second aspect of the present invention embodiment propose a kind of air conditioner system control method, including with Lower step：Obtain the operating parameter of the frequency-changeable compressor of the outdoor unit of the air-conditioning system；With the control using the outdoor unit Device according to the operating parameter of the frequency-changeable compressor independently of the air-conditioning system indoor unit to the frequency conversion pressure of the outdoor unit Contracting machine carries out frequency control.
Air conditioner system control method according to embodiments of the present invention, the controller of outdoor unit is according to the operation of frequency-changeable compressor Parameter carries out frequency control independently of indoor unit and to frequency-changeable compressor, without indoor unit and outdoor unit carry out specific communication with Corresponding control parameter is transmitted, reduces control parameter transmission process, reduces the complexity of air-conditioning system, improves air-conditioning system System operational reliability.
According to one embodiment of present invention, further include：When the operating mode is refrigeration mode, the controller leads to Cross the first pressure sensor acquisition first pressure detection signal for being arranged on the frequency-changeable compressor inlet.
According to one embodiment of present invention, further include：When the operating mode is heating mode, the controller leads to Cross the second pressure sensor acquisition second pressure detection signal for being arranged on the frequency-changeable compressor exit.
According to one embodiment of present invention, the controller according to the operating parameter of the frequency-changeable compressor to the change Frequency compressor carries out frequency control and further comprises：The controller selects the first pressure to detect according to the operating mode Signal or the second pressure detection current refrigerant saturation temperature of signal generation；The controller obtains target refrigerant saturation temperature；Institute It states controller and frequency conversion is carried out to the frequency-changeable compressor according to the current refrigerant saturation temperature, the target refrigerant saturation temperature Control, wherein, during the frequency control to the frequency-changeable compressor, the controller is according to the fortune of the frequency-changeable compressor Row parameter is adjusted the target refrigerant saturation temperature.
According to one embodiment of present invention, if the outdoor unit starts for the first time within the default work period, institute It states controller and the target refrigerant saturation temperature is determined according to the current environmental temperature of the outdoor unit.
According to one embodiment of present invention, further include：When shutting down, the controller is by the target after adjustment Initial target refrigerant saturation temperature when refrigerant saturation temperature is as outdoor unit start next time.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The start-stop time of row time and the frequency-changeable compressor in the first preset time period, the controller is according to the frequency conversion pressure The operating parameter of contracting machine, which is adjusted the target refrigerant saturation temperature, to be further comprised：The controller judges the frequency conversion Whether the run time of compressor is greater than or equal to first time threshold value；If it is determined that the run time of the frequency-changeable compressor is big In or equal to the first time threshold value, then the controller acquisition frequency-changeable compressor is in first preset time period Start-stop time；And if start-stop time of the frequency-changeable compressor in first preset time period is greater than or equal to the One preset times threshold value, then the controller is according to the default step-length adjustment target refrigerant saturation temperature.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor Row time and the running frequency or running current of the frequency-changeable compressor, the controller is according to the fortune of the frequency-changeable compressor Row parameter, which is adjusted the target refrigerant saturation temperature, to be further comprised：The controller judges the frequency-changeable compressor Whether run time is greater than or equal to the second time threshold；If it is determined that the run time of the frequency-changeable compressor is greater than or equal to Second time threshold, then the controller obtain the current operation frequency of the frequency-changeable compressor or current operation electricity respectively Running frequency or running current before stream and the second preset time period；If it is pre- that the current operation frequency is less than described second If the running frequency or the current running current before the period are less than the operation electricity before second preset time period Stream, then the controller holding target refrigerant saturation temperature is constant；If the current operation frequency is greater than or equal to institute Running frequency or the current running current before stating the second preset time period are greater than or equal to second preset time Running current before section, then the controller is according to the default step-length adjustment target refrigerant saturation temperature.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The start-stop time of row time and the frequency-changeable compressor in the 3rd preset time period, the controller is according to the frequency conversion pressure The operating parameter of contracting machine, which is adjusted the target refrigerant saturation temperature, to be further comprised：The controller judges the frequency conversion Whether the run time of compressor is greater than or equal to the 3rd time threshold；If it is determined that the run time of the frequency-changeable compressor is big In or equal to the 3rd time threshold, then the controller acquisition frequency-changeable compressor is in the 3rd preset time period Start-stop time；And if start-stop time of the frequency-changeable compressor in the 3rd preset time period is greater than or equal to the Two preset times threshold values, then the controller it is default full to determine whether the target refrigerant saturation temperature is greater than or equal to And temperature threshold；If the target refrigerant saturation temperature is greater than or equal to the default saturation temperature threshold value, the control Device adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor Row time and the running frequency or running current of the frequency-changeable compressor, the controller is according to the fortune of the frequency-changeable compressor Row parameter, which is adjusted the target refrigerant saturation temperature, to be further comprised：The controller judges the frequency-changeable compressor Whether run time is greater than or equal to the 4th time threshold；If it is determined that the run time of the frequency-changeable compressor is greater than or equal to 4th time threshold, then the controller obtain the current operation frequency of the frequency-changeable compressor or current running current； Judge whether the current operation frequency of the frequency-changeable compressor is greater than or equal to predeterminated frequency threshold value or the frequency-changeable compressor Current running current whether be greater than or equal to predetermined current threshold；If the current operation frequency of the frequency-changeable compressor is more than Or it is greater than or equal to the predetermined current equal to the current running current of the predeterminated frequency threshold value or the frequency-changeable compressor Threshold value, then the controller is according to the default step-length adjustment target refrigerant saturation temperature.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The row time, the controller according to the operating parameter of the frequency-changeable compressor target refrigerant saturation temperature is adjusted into One step includes：The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to the 5th time threshold；Such as Fruit judges that the run time of the frequency-changeable compressor is greater than or equal to the 5th time threshold and the frequency-changeable compressor does not stop Machine is crossed, then the controller adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, further include：It is described after the switching on and shutting down for receiving the outdoor unit instruct Controller controls the outdoor unit delay preset time start or shutdown.
In order to achieve the above objectives, the outdoor unit for a kind of air-conditioning system that third aspect present invention embodiment proposes, including：Become Frequency compressor；Controller, for controlling the frequency-changeable compressor, the controller includes the controller：Start mould Block, for obtaining the operating mode of air-conditioning system, and according to the outdoor of the operating mode of the air-conditioning system startup air-conditioning system The frequency-changeable compressor of machine；Target refrigerant saturation temperature control module, for obtaining initial target refrigerant saturation temperature, and to institute During the frequency control for stating frequency-changeable compressor, according to the operating parameter of the frequency-changeable compressor to the target refrigerant saturation temperature Degree is adjusted；Frequency control module, for carrying out frequency conversion to the frequency-changeable compressor according to the target refrigerant saturation temperature Control.
The outdoor unit of air-conditioning system according to embodiments of the present invention is controlled without carrying out particular communication with indoor unit Parameter so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
According to one embodiment of present invention, the target refrigerant saturation temperature control module, being additionally operable to will when shutting down Target refrigerant saturation temperature when the target refrigerant saturation temperature after adjustment is started shooting next time as the outdoor unit.
According to one embodiment of present invention, further include：The first pressure for being arranged on the frequency-changeable compressor inlet passes Sensor, the first pressure sensor generate first pressure when the operating mode is refrigeration mode and detect signal.
According to one embodiment of present invention, further include：The second pressure for being arranged on the frequency-changeable compressor exit passes Sensor, the second pressure sensor generate second pressure when the operating mode is heating mode and detect signal.
According to one embodiment of present invention, the target refrigerant saturation temperature control module is selected according to the operating mode One of the first pressure detection signal and second pressure detection the signal current refrigerant saturation temperature of generation are selected, and it is cold to obtain target Matchmaker's saturation temperature, the frequency control module is according to the current refrigerant saturation temperature, the target refrigerant saturation temperature to institute It states frequency-changeable compressor and carries out frequency control.
According to one embodiment of present invention, further include：Temperature sensor, the temperature sensor detect the outdoor unit The current environmental temperature of local environment, wherein, if the outdoor unit starts for the first time within the default work period, the mesh Mark refrigerant saturation temperature control module determines the target refrigerant saturation temperature according to the current environmental temperature of the outdoor unit.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The start-stop time of row time and the frequency-changeable compressor in the first preset time period.
According to one embodiment of present invention, it is more than or equal to first time threshold value in the run time of the frequency-changeable compressor And start-stop time of the frequency-changeable compressor in first preset time period be more than or equal to the first preset times threshold value when, institute It states target refrigerant saturation temperature control module and adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor Row time and the running frequency or running current of the frequency-changeable compressor.
According to one embodiment of present invention, it is more than or equal to the second time threshold in the run time of the frequency-changeable compressor When, the target refrigerant saturation temperature control module obtains the current operation frequency of the frequency-changeable compressor or current operation respectively Running frequency or running current before electric current and the second preset time period；It is pre- to be less than described second in the current operation frequency If the running frequency or the current running current before the period are less than the operation electricity before second preset time period During stream, the target refrigerant saturation temperature control module keeps the target refrigerant saturation temperature constant, and in the current fortune Line frequency is more than or equal to institute more than or equal to the running frequency before second preset time period or the current running current When stating the running current before the second preset time period, the target refrigerant saturation temperature control module is adjusted according to default step-length The target refrigerant saturation temperature.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The start-stop time of row time and the frequency-changeable compressor in the 3rd preset time period, wherein in the fortune of the frequency-changeable compressor The row time is more than or equal to the 3rd time threshold, and start-stop time of the frequency-changeable compressor in the 3rd preset time period is more than It is described equal to the second preset times threshold value, and when the target refrigerant saturation temperature is greater than or equal to default saturation temperature threshold value Target refrigerant saturation temperature control module adjusts the target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor Row time and the running frequency or running current of the frequency-changeable compressor, wherein the run time in the frequency-changeable compressor is big In equal to the 4th time threshold, and the current operation frequency of the frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described When the current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, the target refrigerant saturation temperature control module is pressed The target refrigerant saturation temperature is adjusted according to default step-length.
According to one embodiment of present invention, the operating parameter of the frequency-changeable compressor includes the fortune of the frequency-changeable compressor The row time, wherein the run time in the frequency-changeable compressor is more than or equal to the 5th time threshold, and the frequency-changeable compressor is not When stopping machine, the target refrigerant saturation temperature control module adjusts the target refrigerant saturation temperature according to default step-length.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of air-conditioning system, including the present invention the The outdoor unit for the air-conditioning system that three aspect embodiments propose.
Air-conditioning system according to embodiments of the present invention, the controller of outdoor unit is according to the operating parameter of frequency-changeable compressor to becoming Frequency compressor carries out frequency control, without indoor unit or carries out particular communication without outdoor unit and indoor unit and obtains control ginseng Number so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments Substantially and it is readily appreciated that, wherein：
Figure 1A is the Organization Chart of existing frequency-conversion air-conditioning system；
Figure 1B is the Organization Chart according to the air-conditioning system of one embodiment of the invention；
Fig. 2 is the Organization Chart according to the air-conditioning system of another embodiment of the present invention；
Fig. 3 is the control logic schematic diagram according to the air-conditioning system of embodiment 1；
Fig. 4 is the control logic schematic diagram according to the air-conditioning system of embodiment 2；
Fig. 5 is the control logic schematic diagram according to the air-conditioning system of embodiment 3；
Fig. 6 is the control logic schematic diagram according to the air-conditioning system of embodiment 4；
Fig. 7 is the control logic schematic diagram according to the air-conditioning system of embodiment 5；
Fig. 8 is the control logic schematic diagram according to the air-conditioning system of embodiment 6；
Fig. 9 is the control logic schematic diagram according to the air-conditioning system of embodiment 7；
Figure 10 is the control logic schematic diagram according to the air-conditioning system of embodiment 8；
Figure 11 is the control logic schematic diagram according to the air-conditioning system of embodiment 9；
Figure 12 is the control logic schematic diagram according to the air-conditioning system of embodiment 10；
Figure 13 is the flow chart according to the air conditioner system control method of the embodiment of the present invention；And
Figure 14 is the block diagram according to the outdoor unit of the air-conditioning system of the embodiment of the present invention.
Reference numeral：
Indoor unit 1：Interior machine control signal receiving module 11, interior machine control processor 12, signal transmission module 13, indoor wind Machine 14 and indoor throttle valve 15；
Outdoor unit 2：Frequency-changeable compressor Mc and controller 21, communicator 22, first pressure sensor 23, second pressure sensing Device 24, temperature sensor 25, outer wind turbine Mf, outer expansion valve Ev, outer four-way valve SV and outer machine system protection sensor 26, system ginseng Number acquisition module 27；
Remote controler 3；
Line control machine 4；
Controller 21：Compressor output frequency control module 211 (frequency control module 203), wind turbine output control module 212nd, outer expansion valve output control module 213 and outer four-way valve output control module 214, starting module 201, target refrigerant saturation Temperature control modules 202.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter Change disclosure of the invention, hereinafter the component and setting of specific examples are described.Certainly, they are merely examples, and It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity again.This Outside, the present invention provides various specific techniques and material example, but those of ordinary skill in the art may realize that The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can be formed as the embodiment contacted directly including the first and second features, other feature shape can also be included Into the embodiment between the first and second features, such first and second feature may not be to contact directly.
In the description of the present invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be the connection inside mechanical connection or electrical connection or two elements, it can To be to be connected directly, can also be indirectly connected by intermediary, it for the ordinary skill in the art, can basis Concrete condition understands the concrete meaning of above-mentioned term.
With reference to the accompanying drawings come describe the air-conditioning system proposed according to embodiments of the present invention, air conditioner system control method and The outdoor unit of air-conditioning system.
First, the air-conditioning system that first aspect embodiment proposes with reference to the accompanying drawings to describe the present invention.
Figure 1B is the Organization Chart according to the air-conditioning system of one embodiment of the invention.As shown in Figure 1B, the air-conditioning system Including indoor unit 1 and outdoor unit 2.
Wherein, outdoor unit 2 includes frequency-changeable compressor Mc and controller 21, and controller 21 is according to the fortune of frequency-changeable compressor Mc Row parameter and independently of indoor unit 1 and to frequency-changeable compressor Mc carry out frequency control.
Also, outdoor unit 2 further includes communicator 22, communicator 22 is for receiving remote controler 3, line control machine 4 directly transmits or The switching on and shutting down instruction and mode selection command that indoor unit 1 is sent, wherein, controller 21 is joined according to the operation of frequency-changeable compressor Mc Number operating mode corresponding with mode selection command carries out frequency control to frequency-changeable compressor Mc.Specifically, as shown in Figure 1B, Communicator 22 is signal receiving module, and is only received by control signal receiving module from remote controler 3, line control machine 4 directly The switching on and shutting down command control signal and mode selection command control signal of transmission or by control signal receiving module receive come The switching on and shutting down command control signal and mode selection command control signal sent from indoor unit 1.
As shown in Figure 1B, indoor unit 1 includes interior machine control signal receiving module 11, interior machine control processor 12, signal and passes The major electrical equipments components such as defeated module 13, indoor fan 14 and indoor throttle valve 15.Indoor fan 14 and indoor throttle valve 15 are by interior Machine control processor 12 controls, and indoor unit 1 is referred to switching on and shutting down command control signal and model selection by signal transmission module 13 Control signal is made to be transferred to the control signal receiving module of communicator 22 with general transmission rule.Wherein, switching on and shutting down instruction control Signal and mode selection command control signal processed can be transmitted directly to the communicator 22 in outdoor unit 2 by indoor unit 1.Alternatively, Indoor unit 1 receives the switching on and shutting down sent from remote controler 3, line control machine 4 by interior machine control signal receiving module 11 and instructs control Signal and mode selection command control signal, then indoor unit 1 by signal transmission module 13 by switching on and shutting down command control signal The control signal receiving module of communicator 22 is transmitted to general transmission rule with mode selection command control signal.
In an embodiment of the present invention, which controls according to switching on and shutting down command control signal and mode selection command The start and stop and model selection of the outer machine of signal control room.
As shown in Figure 1B, outdoor unit 2 further includes the first pressure sensor 23 for being arranged on frequency-changeable compressor Mc inlet, First pressure sensor 23 generates first pressure when operating mode is refrigeration mode and detects signal.Wherein, when air-conditioning system is During single cooler, when only first pressure sensor 23 need to be set at the muffler of frequency-changeable compressor Mc to detect air-conditioning system refrigeration Frequency-changeable compressor Mc return-air low-pressure lateral pressures.
In another embodiment of the present invention, as shown in Fig. 2, outdoor unit 2 further includes and is arranged on frequency-changeable compressor Mc and goes out Second pressure sensor 24 at mouthful, second pressure sensor 24 generate second pressure detection when operating mode is heating mode Signal.That is, when air-conditioning system is air conditioner, second pressure need to also be set to pass at the exhaust pipe of frequency-changeable compressor Mc Frequency-changeable compressor Mc exhaust high side pressures when sensor 24 is to detect air-conditioning system heating.It is of course also possible to behind four-way valve A pressure sensor is assembled, when refrigeration is low-pressure lateral pressure, substantially suitable with back pressure.It is high pressure side pressure during heating Power is substantially suitable with pressure at expulsion.
Wherein, controller 21 selects first pressure detection signal and second pressure detection signal all one's life according to operating mode Into current refrigerant saturation temperature, and target refrigerant saturation temperature is obtained, and according to current refrigerant saturation temperature, target refrigerant saturation Temperature carries out frequency control to frequency-changeable compressor Mc, wherein, during the frequency control to frequency-changeable compressor Mc, controller 21 Target refrigerant saturation temperature is adjusted according to the operating parameter of frequency-changeable compressor Mc.In an embodiment of the present invention, control Device 21 is when shutting down, using the target refrigerant saturation temperature after adjustment as initial target refrigerant during outdoor unit 2 next time of start Saturation temperature.
Also, as shown in Figure 1B or Fig. 2, outdoor unit 2 further includes temperature sensor 25, outside 25 sensing chamber of temperature sensor The current environmental temperature of 2 local environment of machine, wherein, if outdoor unit 2 starts for the first time within the default work period, controller 21 determine target refrigerant saturation temperature according to the current environmental temperature of outdoor unit 2.It should be noted that the default work period should be made It broadly understood, can be several years, or some months.For example, when outdoor unit 2 is close after summer, just opened again until winter It opens, when at this moment starting for the first time if in the winter after some months, controller 21 is according to the current environmental temperature of outdoor unit 2 Determine that the target after the adjustment recorded when target refrigerant saturation temperature rather than last shutdown (summer a few months ago) is cold Matchmaker's saturation temperature.
In addition, as shown in Figure 1B or Fig. 2, outdoor unit 2 further include outer wind turbine Mf, outer expansion valve Ev, outer four-way valve SV and Outer machine system protection sensor 26, systematic parameter acquisition module 27, systematic parameter acquisition module 27 be connected to each sensor with Between controller 21, by first pressure sensor 23, second pressure sensor 24 and temperature sensor 25, outer machine system protection The parameter that sensor 26 gathers is sent to controller 21 after being handled.Wherein, controller 21 includes compressor output frequency control Molding block 211, wind turbine output control module 212, outer expansion valve output control module 213 and outer four-way valve output control module 214, compressor output frequency control module 211, wind turbine output control module 212, outer expansion valve output control module 213 and outer The acquisition signal that four-way valve output control module 214 exports respectively according to systematic parameter acquisition module 27 is realized to frequency-changeable compressor Mc, outer wind turbine Mf, outer expansion valve Ev and outer four-way valve SV are accordingly controlled.
In one embodiment of the invention, the operating parameter of frequency-changeable compressor Mc includes the run time of frequency-changeable compressor And start-stop times of the frequency-changeable compressor Mc in the first preset time period.It is also, big in the run time of frequency-changeable compressor Mc It is default to be more than or equal to first in the start-stop time in the first preset time period equal to first time threshold value and frequency-changeable compressor Mc During frequency threshold value, controller 21 adjusts target refrigerant saturation temperature according to default step-length.
Specifically, implementation of the present invention is described in detail with two embodiments of heating mode and refrigeration mode separately below The control process of the air-conditioning system of example.
【Embodiment 1】
As shown in figure 3, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured on outdoor unit 2 Force snesor 23, outdoor unit 2 is according to the mode selection command control signal and switching on and shutting down command control signal system received The startup-shutdown operation of cooling system.Wherein, controller 21 was when receiving machine open/close signal, into line delay certain time such as S seconds Processing to prevent client because maloperation selection causes outdoor unit 2 to start operating, avoids the controller of outdoor unit from carrying out mistake and sentences It is disconnected.That is, controller, after switching on and shutting down instruction is received, delay preset time is started shooting for such as S seconds or shutdown.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature, between 30-35 DEG C, definite initial target is cold Matchmaker's saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, and definite initial target refrigerant saturation temperature is 3 DEG C, room For external environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C.If indoor unit is not default work Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation Temperature Te constantly carries out PID adjustings then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, it is right It is described as follows in PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, when outdoor unit shuts down, controller 21 judges the run time of frequency-changeable compressor, if frequency conversion The run time of compressor is less than first time threshold value such as Y minutes, then it is cold to target according to machine stop times to be not counted in controller The judgement that matchmaker's saturation temperature is modified, to prevent client from, because maloperation selection causes outdoor unit start and stop to operate, avoiding controller Carry out wrong judgement.
If the run time of frequency-changeable compressor is more than or equal to first time threshold value for example more than Y minutes, normally it is included in The judgement that controller is modified target refrigerant saturation temperature according to machine stop times.And in the first preset time period such as one It fixes time in X minutes, controller is more than or equal to the first preset times threshold value for example more than Z according to the stopping signal number received Secondary situation judges that the indoor cooling load of air-conditioning system is smaller, and controller is satisfied according to default step-length adjustment target refrigerant With temperature Tes, i.e., target refrigerant saturation temperature Tes is constantly corrected upwards, such as adjust Tes=Tes+1, more fresh target refrigerant Saturation temperature Tes, while the run time of the frequency-changeable compressor is returned 0, restart timing, satisfied with newer target refrigerant PID adjustings are constantly carried out to current refrigerant saturation temperature Te with temperature Tes, frequency-changeable compressor is allowed to reduce rotating speed in the running, is subtracted Few refrigerating capacity output, so as to slowly reduce indoor temperature, reduces the state of outdoor unit frequent shutdown.Meanwhile record current mesh Refrigerant saturation temperature is marked, it can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air-conditioning system of the embodiment of the present invention can influence refrigeration system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
【Embodiment 2】
As shown in figure 4, it in a heating mode, is also configured with detecting the second of refrigerant high side pressure value on outdoor unit 2 Pressure sensor 24, outdoor unit 2 are carried out according to the mode selection command control signal and switching on and shutting down command control signal received The startup-shutdown operation of heating system.Wherein, controller 21 is when receiving machine open/close signal, into line delay certain time such as S Second processing, to prevent client from, because maloperation selection causes outdoor unit 2 to start operating, the controller progress mistake of outdoor unit being avoided to sentence It is disconnected.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature, between 7-10 DEG C, definite initial target is cold Matchmaker's saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, controller if, stops according to the last time Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during machine is started shooting as this.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation Temperature Tc constantly carries out PID adjustings then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, when outdoor unit shuts down, controller 21 judges the run time of frequency-changeable compressor, if frequency conversion The run time of compressor is less than first time threshold value such as Y minutes, then it is cold to target according to machine stop times to be not counted in controller The judgement that matchmaker's saturation temperature is modified, to prevent client from, because maloperation selection causes outdoor unit start and stop to operate, avoiding controller Carry out wrong judgement.
If the run time of frequency-changeable compressor is more than or equal to first time threshold value for example more than Y minutes, normally it is included in The judgement that controller is modified target refrigerant saturation temperature according to machine stop times.And in the first preset time period such as one It fixes time in X minutes, controller is more than or equal to the first preset times threshold value for example more than Z according to the stopping signal number received Secondary situation judges that the indoor heating load of air-conditioning system is smaller, and controller is satisfied according to default step-length adjustment target refrigerant With temperature Tcs, i.e., continuous downward revision target refrigerant saturation temperature Tcs, such as Tcs=Tcs-1 is adjusted, more fresh target refrigerant Saturation temperature Tcs, while the run time of the frequency-changeable compressor is returned 0, restart timing, satisfied with newer target refrigerant PID adjustings are constantly carried out to current refrigerant saturation temperature Tc with temperature Tcs, frequency-changeable compressor is allowed to reduce rotating speed in the running, is subtracted Few heating capacity output, so as to slowly improve indoor temperature, reduces the state of outdoor unit frequent shutdown.Meanwhile record current mesh Refrigerant saturation temperature is marked, it can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
According to another embodiment of the invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And the running frequency or running current of frequency-changeable compressor.Also, when the run time of frequency-changeable compressor is more than or equal to second Between threshold value when, controller obtains the current operation frequency of frequency-changeable compressor or current running current and the second preset time period respectively Running frequency before or running current；Less than the running frequency before the second preset time period or work as in current operation frequency Preceding running current be less than the second preset time period before running current when, controller keep target refrigerant saturation temperature it is constant, And it is more than or equal in current operation frequency more than or equal to the running frequency before the second preset time period or current running current During running current before the second preset time period, controller adjusts target refrigerant saturation temperature according to default step-length.
Specifically, implementation of the present invention is described in detail with two embodiments of heating mode and refrigeration mode separately below The control process of the air-conditioning system of example.
【Embodiment 3】
As shown in figure 5, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured on outdoor unit 2 Force snesor 23, outdoor unit 2 freezes according to the mode selection command control signal and switching on and shutting down command control signal received to be transported Row.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature, between 30-35 DEG C, definite initial target is cold Matchmaker's saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, and definite initial target refrigerant saturation temperature is 3 DEG C, room For external environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C.If indoor unit is not default work Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation Temperature Te constantly carries out PID adjustings, so as to give then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te Go out the rate-adaptive pacemaker of frequency-changeable compressor.Wherein, it is described as follows for PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, it is more than or equal to the second time threshold such as certain time U in the run time of frequency-changeable compressor After minute, controller to the operation before the current operation frequency of frequency-changeable compressor and the second preset time period such as W minute frequently Rate is compared to judge whether to need to be modified target refrigerant saturation temperature Tes or controller is to frequency-changeable compressor Running current before such as W minutes of current running current and the second preset time period be compared to judge whether to need pair Target refrigerant saturation temperature Tes is modified.
After frequency-changeable compressor is run U minute, and the current operation frequency of frequency-changeable compressor is less than the fortune before W minutes The current running current of line frequency or frequency-changeable compressor be less than W minutes before running current and do not occurred shutdown action, then Controller judges target refrigerant saturation temperature Tes is maintained current PID control to require operating, make Indoor Temperature without correcting Degree progressively reaches setting target.Meanwhile current goal refrigerant saturation temperature Tes is recorded, it can be initial as what is started shooting next time Target refrigerant saturation temperature.
After frequency-changeable compressor is run U minute, and the current operation frequency of frequency-changeable compressor is more than or equal to before W minutes The current running current of running frequency or frequency-changeable compressor be more than or equal to W minute before running current and do not occurred shut down move Make, it is believed that inadequate compared with cooling load frequency-changeable compressor ability need, controller adjusts target refrigerant according to default step-length Saturation temperature Tes, i.e., continuous downward revision target refrigerant saturation temperature Tes, such as Tes=Tes-1 is adjusted, more fresh target refrigerant Saturation temperature Tes, while the run time of the frequency-changeable compressor is returned 0, restart timing, satisfied with newer target refrigerant PID adjustings are constantly carried out to current refrigerant saturation temperature Te with temperature Tes so that frequency-changeable compressor, which improves rotating speed, reduces sucking pressure Power makes indoor temperature reach setting target.Meanwhile current goal refrigerant saturation temperature is recorded, it can be as starting shooting next time Initial target refrigerant saturation temperature.
Therefore, the air-conditioning system of the embodiment of the present invention can influence refrigeration system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
【Embodiment 4】
As shown in fig. 6, in a heating mode, the second pressure for detecting refrigerant high side pressure value is configured on outdoor unit 2 Force snesor 24, outdoor unit 2 heat fortune according to the mode selection command control signal and switching on and shutting down command control signal received Row.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature, between 7-10 DEG C, definite initial target is cold Matchmaker's saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, controller if, stops according to the last time Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during machine is started shooting as this.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation Temperature Tc constantly carries out PID adjustings, so as to give then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc Go out the rate-adaptive pacemaker of frequency-changeable compressor.
In the present embodiment, it is more than or equal to the second time threshold such as certain time U in the run time of frequency-changeable compressor After minute, controller to the operation before the current operation frequency of frequency-changeable compressor and the second preset time period such as W minute frequently Rate is compared to judge whether to need to be modified target refrigerant saturation temperature Tcs or controller is to frequency-changeable compressor Running current before such as W minutes of current running current and the second preset time period be compared to judge whether to need pair Target refrigerant saturation temperature Tcs is modified.
After frequency-changeable compressor is run U minute, and the current operation frequency of frequency-changeable compressor is less than the fortune before W minutes The current running current of line frequency or frequency-changeable compressor be less than W minutes before running current and do not occurred shutdown action, then Controller judges target refrigerant saturation temperature Tcs is maintained current PID control to require operating, make Indoor Temperature without correcting Degree progressively reaches setting target.Meanwhile current goal refrigerant saturation temperature Tcs is recorded, it can be initial as what is started shooting next time Target refrigerant saturation temperature.
After frequency-changeable compressor is run U minute, and the current operation frequency of frequency-changeable compressor is more than or equal to before W minutes The current running current of running frequency or frequency-changeable compressor be more than or equal to W minute before running current and do not occurred shut down move Make, it is believed that inadequate compared with heating load frequency-changeable compressor ability need, controller adjusts target refrigerant according to default step-length Saturation temperature Tcs constantly corrects target refrigerant saturation temperature Tcs, such as adjusts Tcs=Tcs+1 upwards, more fresh target refrigerant Saturation temperature Tcs, while the run time of the frequency-changeable compressor is returned 0, restart timing, satisfied with newer target refrigerant PID adjustings are constantly carried out to current refrigerant saturation temperature Tc with temperature Tcs so that frequency-changeable compressor improves rotating speed and improves high-pressure side Discharge pressure makes indoor temperature reach setting target.Meanwhile current goal refrigerant saturation temperature is recorded, it can be used as next time The initial target refrigerant saturation temperature of start.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
In yet another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And start-stop time of the frequency-changeable compressor in the 3rd preset time period, wherein the run time in frequency-changeable compressor is more than or equal to 3rd time threshold, start-stop time of the frequency-changeable compressor in the 3rd preset time period are more than or equal to the second preset times threshold value, And target refrigerant saturation temperature, when being greater than or equal to default saturation temperature threshold value, controller adjusts target refrigerant according to default step-length Saturation temperature.
Specifically, implementation of the present invention is described in detail with two embodiments of heating mode and refrigeration mode separately below The control process of the air-conditioning system of example.
【Embodiment 5】
As shown in fig. 7, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured on outdoor unit 2 Force snesor 23, outdoor unit 2 freezes according to the mode selection command control signal and switching on and shutting down command control signal received to be transported Row.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature, between 30-35 DEG C, definite initial target is cold Matchmaker's saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, and definite initial target refrigerant saturation temperature is 3 DEG C, room For external environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C.If indoor unit is not default work Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation Temperature Te constantly carries out PID adjustings then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, it is right It is described as follows in PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, it is more than or equal to the 3rd time threshold such as certain time A in the run time of frequency-changeable compressor After minute, controller judges whether to need to target refrigerant saturation temperature according to the machine stop times received and indoor ability need Tes is modified, that is, is sayed, controller judges opening for the frequency-changeable compressor received in the 3rd preset time period in such as B minutes Stop whether number is more than or equal to the second preset times such as D times and whether target refrigerant saturation temperature Tes is greater than or equal to Default saturation temperature threshold value C, to determine whether needing to be modified target refrigerant saturation temperature Tes.
If the run time of frequency-changeable compressor is more than or equal to the 3rd time threshold for example more than A minutes, normally it is included in Machine stop times were more than or equal to D times in B minutes, and target refrigerant saturation temperature Tes is more than or equal to C, judged the room of air-conditioning system Inside cooling load is smaller, and controller adjusts target refrigerant saturation temperature Tes according to default step-length, i.e., constantly corrects mesh upwards Refrigerant saturation temperature Tes is marked, such as adjusts Tes=Tes+1, more fresh target refrigerant saturation temperature Tes, while by the frequency conversion pressure The run time of contracting machine returns 0, restarts timing, with newer target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te constantly carries out PID adjustings, and frequency-changeable compressor is allowed to reduce rotating speed in the running, refrigerating capacity output is reduced, so as to slowly reduce Indoor temperature reduces the state of outdoor unit frequent shutdown.Meanwhile current goal refrigerant saturation temperature is recorded, it can be used as next The initial target refrigerant saturation temperature of secondary start.
Therefore, the air-conditioning system of the embodiment of the present invention can influence refrigeration system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
【Embodiment 6】
As shown in figure 8, in a heating mode, the second pressure for detecting refrigerant high side pressure value is configured on outdoor unit 2 Force snesor 24, outdoor unit 2 heat fortune according to the mode selection command control signal and switching on and shutting down command control signal received Row.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature, between 7-10 DEG C, definite initial target is cold Matchmaker's saturation temperature is 46 DEG C.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation Temperature Tc constantly carries out PID adjustings then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, it is more than or equal to the 3rd time threshold such as certain time A in the run time of frequency-changeable compressor After minute, controller judges whether to need to target refrigerant saturation temperature according to the machine stop times received and indoor ability need Tcs is modified, that is, is sayed, controller judges opening for the frequency-changeable compressor received in the 3rd preset time period in such as B minutes Stop whether number is more than or equal to the second preset times such as D times and whether target refrigerant saturation temperature Tcs is greater than or equal to Default saturation temperature threshold value C, to determine whether needing to be modified target refrigerant saturation temperature Tcs.
If the run time of frequency-changeable compressor is more than or equal to the 3rd time threshold for example more than A minutes, normally it is included in Machine stop times were more than or equal to D times in B minutes, and target refrigerant saturation temperature Tcs is more than or equal to C, judged the room of air-conditioning system Inside heating load is smaller, and controller adjusts target refrigerant saturation temperature Tcs, i.e., continuous downward revision mesh according to default step-length Refrigerant saturation temperature Tcs is marked, such as adjusts Tcs=Tcs-1, more fresh target refrigerant saturation temperature Tcs, while by the frequency conversion pressure The run time of contracting machine returns 0, restarts timing, with newer target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc constantly carries out PID adjustings, and frequency-changeable compressor is allowed to reduce rotating speed in the running, heating capacity output is reduced, so as to slowly improve Indoor temperature reduces the state of outdoor unit frequent shutdown.Meanwhile current goal refrigerant saturation temperature is recorded, it can be used as next The initial target refrigerant saturation temperature of secondary start.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
In yet another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And the running frequency or running current of frequency-changeable compressor, wherein the run time in frequency-changeable compressor was more than or equal to for the 4th time Threshold value, and the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or the current fortune of the frequency-changeable compressor When row electric current is more than or equal to predetermined current threshold, controller adjusts target refrigerant saturation temperature according to default step-length.
Specifically, implementation of the present invention is described in detail with two embodiments of heating mode and refrigeration mode separately below The control process of the air-conditioning system of example.
【Embodiment 7】
As shown in figure 9, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured on outdoor unit 2 Force snesor 23, outdoor unit 2 freezes according to the mode selection command control signal and switching on and shutting down command control signal received to be transported Row.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature, between 30-35 DEG C, definite initial target is cold Matchmaker's saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, and definite initial target refrigerant saturation temperature is 3 DEG C, room For external environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C.If indoor unit is not default work Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation Temperature Te constantly carries out PID adjustings then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, it is right It is described as follows in PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor After minute (30 minutes), controller compares the current operation frequency of frequency-changeable compressor for such as F hertz with predeterminated frequency threshold value Compared with to judge whether to need to be modified target refrigerant saturation temperature Tes or controller is to the current fortune of frequency-changeable compressor Row electric current is compared with predetermined current threshold to judge whether to need to be modified target refrigerant saturation temperature Tes.
After frequency-changeable compressor is run E minute, and the current operation frequency of frequency-changeable compressor more than or equal to F hertz or The current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor cooling load of air-conditioning system Bigger, controller adjusts target refrigerant saturation temperature Tes, i.e., continuous downward revision target refrigerant saturation temperature according to default step-length Tes is spent, such as adjusts Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, while during by the operation of the frequency-changeable compressor Between return 0, restart timing, PID constantly carried out to current refrigerant saturation temperature Te with newer target refrigerant saturation temperature Tes It adjusts so that frequency-changeable compressor, which improves rotating speed, reduces suction pressure, and indoor temperature is made to reach setting target.Meanwhile record is current Target refrigerant saturation temperature, can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air-conditioning system of the embodiment of the present invention can influence refrigeration system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
【Embodiment 8】
As shown in Figure 10, in a heating mode, the second pressure for detecting refrigerant high side pressure value is configured on outdoor unit 2 Force snesor 24, outdoor unit 2 heat fortune according to the mode selection command control signal and switching on and shutting down command control signal received Row.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature, between 7-10 DEG C, definite initial target is cold Matchmaker's saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, controller if, stops according to the last time Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during machine is started shooting as this.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation Temperature Tc constantly carries out PID adjustings then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor After minute (30 minutes), controller compares the current operation frequency of frequency-changeable compressor for such as F hertz with predeterminated frequency threshold value Compared with to judge whether to need to be modified target refrigerant saturation temperature Tcs or controller is to the current fortune of frequency-changeable compressor Row electric current is compared with predetermined current threshold to judge whether to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor is run E minute, and the current operation frequency of frequency-changeable compressor more than or equal to F hertz or The current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor heating load of air-conditioning system Bigger, controller adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly corrects target refrigerant saturation temperature upwards Tcs is spent, such as adjusts Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while during by the operation of the frequency-changeable compressor Between return 0, restart timing, PID constantly carried out to current refrigerant saturation temperature Tc with newer target refrigerant saturation temperature Tcs It adjusts so that frequency-changeable compressor improves rotating speed, improves high pressure discharge pressure as early as possible, indoor temperature is made to reach setting target.Meanwhile Current goal refrigerant saturation temperature is recorded, it can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
In another embodiment of the present invention, when the operating parameter of frequency-changeable compressor includes the operation of frequency-changeable compressor Between, wherein when the run time of frequency-changeable compressor is more than or equal to the 5th time threshold and frequency-changeable compressor did not stopped machine, control Device adjusts target refrigerant saturation temperature according to default step-length.
Specifically, implementation of the present invention is described in detail with two embodiments of heating mode and refrigeration mode separately below The control process of the air-conditioning system of example.
【Embodiment 9】
As shown in figure 11, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured on outdoor unit 2 Force snesor 23, outdoor unit 2 is according to the mode selection command control signal and switching on and shutting down command control signal system received The startup-shutdown operation of cooling system.Wherein, controller 21 was when receiving machine open/close signal, into line delay certain time such as S seconds Processing to prevent client because maloperation selection causes outdoor unit 2 to start operating, avoids the controller of outdoor unit from carrying out mistake and sentences It is disconnected.That is, controller, after switching on and shutting down instruction is received, delay preset time is started shooting for such as S seconds or shutdown.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature, between 30-35 DEG C, definite initial target is cold Matchmaker's saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, and definite initial target refrigerant saturation temperature is 3 DEG C, room For external environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C.If indoor unit is not default work Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation Temperature Te constantly carries out PID adjustings then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, it is right It is described as follows in PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, controller judges Whether frequency-changeable compressor stopped machine to determine whether needing to be modified target refrigerant saturation temperature Tes.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor cooling load of system is bigger, and controller adjusts target refrigerant saturation temperature Tes according to default step-length, i.e., constantly downwards Target refrigerant saturation temperature Tes is corrected, such as adjusts Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, while by described in The run time of frequency-changeable compressor returns 0, restarts timing, is satisfied with newer target refrigerant saturation temperature Tes to current refrigerant PID adjustings are constantly carried out with temperature Te so that frequency-changeable compressor, which improves rotating speed, reduces suction pressure, and indoor temperature is made to reach setting Target.Meanwhile current goal refrigerant saturation temperature is recorded, it can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air-conditioning system of the embodiment of the present invention can influence refrigeration system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
【Embodiment 10】
As shown in figure 12, in a heating mode, it is also configured with detecting the second of refrigerant high side pressure value on outdoor unit 2 Pressure sensor 24, outdoor unit 2 are carried out according to the mode selection command control signal and switching on and shutting down command control signal received The startup-shutdown operation of heating system.Wherein, controller 21 is when receiving machine open/close signal, into line delay certain time such as S Second processing, to prevent client from, because maloperation selection causes outdoor unit 2 to start operating, the controller progress mistake of outdoor unit being avoided to sentence It is disconnected.
Also, if indoor unit was started for the first time in the default work period, front ring is worked as according to outdoor unit if controller Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature, between 7-10 DEG C, definite initial target is cold Matchmaker's saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, controller if, stops according to the last time Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during machine is started shooting as this.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation Temperature Tc constantly carries out PID adjustings then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, controller judges Whether frequency-changeable compressor stopped machine to judge whether to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor heating load of system is bigger, and controller adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly upwards Target refrigerant saturation temperature Tcs is corrected, such as adjusts Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while by described in The run time of frequency-changeable compressor returns 0, restarts timing, is satisfied with newer target refrigerant saturation temperature Tcs to current refrigerant PID adjustings are constantly carried out with temperature Tc so that frequency-changeable compressor improves rotating speed, improves high pressure discharge pressure as early as possible, makes Indoor Temperature Degree reaches setting target.Meanwhile current goal refrigerant saturation temperature is recorded, it can be as the initial target refrigerant started shooting next time Saturation temperature.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating system operation ginseng according to system indoor load situation Several situations is identified and judges, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui reaches design temperature requirement.
In an embodiment of the present invention, air-conditioning system can be one-to-one system or one drags multisystem, and should Air-conditioning system can be single cooler or air conditioner.Wherein indoor unit does not communicate the parameters such as indoor environment temperature to room Outer machine, and be only the start-stop for the startup-shutdown instruction control outdoor unit sent according to line control machine, remote controler or indoor unit.This hair The air-conditioning system of bright embodiment can be under machine and outdoor unit are communicated without control parameter indoors refrigeration and/or heating mode Frequency-changeable compressor is controlled, the controller of outdoor unit being capable of the rapid electric appliance for controlling the outdoor units such as frequency-changeable compressor of autonomous learning completion Component, so that indoor temperature reaches and maintains design temperature.
According to an embodiment of the invention, controller 21 is when receiving machine open/close signal, into line delay certain time for example It handles within S seconds, to prevent client from, because maloperation selection causes outdoor unit 2 to start operating, the controller of outdoor unit being avoided to carry out mistake Judge.That is, controller, after switching on and shutting down instruction is received, delay preset time is started shooting for such as S seconds or shutdown.
Air-conditioning system according to embodiments of the present invention, the controller of the outdoor unit in air-conditioning system is according to frequency-changeable compressor Operating parameter carries out frequency control independently of indoor unit and to frequency-changeable compressor, is specifically led to without indoor unit and outdoor unit It interrogates to transmit corresponding control parameter so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
The air conditioner system control method that embodiment according to a second aspect of the present invention proposes described with reference to the accompanying drawings.
Figure 13 is the flow chart according to the air conditioner system control method of the embodiment of the present invention.As shown in figure 13, the air-conditioning system System control method comprises the following steps：
S1 obtains the operating parameter of the frequency-changeable compressor of the outdoor unit of air-conditioning system.
S2, using the controller of outdoor unit according to the operating parameter of frequency-changeable compressor independently of the indoor unit pair of air-conditioning system The frequency-changeable compressor of outdoor unit carries out frequency control.
That is, after air-conditioning system is started, the first pressure sensor of outdoor unit and/or second pressure sensor point Not Jian Ce frequency-changeable compressor air inlet pressure force value and/or exhaust pressure value and temperature sensor detection outdoor unit around environment Temperature, and the frequency-changeable compressor air inlet pressure force value and/or exhaust pressure value that detect and outdoor unit environment temperature are sent to Systematic parameter acquisition module, frequency-changeable compressor air inlet pressure force value that controller is collected according to systematic parameter acquisition module and/or Exhaust pressure value and outdoor unit environment temperature carry out internal arithmetic processing to generate control signal, and frequency-changeable compressor is carried out Frequency control and external wind turbine, outer expansion valve, outer four-way valve are accordingly controlled.
In one embodiment of the invention, above-mentioned air conditioner system control method further includes：It is refrigeration in operating mode During pattern, controller obtains first pressure detection signal by being arranged on the first pressure sensor of frequency-changeable compressor inlet.
Wherein, when air-conditioning system is single cooler, first pressure need to only be set to sense at the muffler of frequency-changeable compressor Frequency conversion compressor return air low-pressure lateral pressure when device is to detect air-conditioning system refrigeration.
In another embodiment of the present invention, above-mentioned air conditioner system control method further includes：It is system in operating mode During heat pattern, controller obtains second pressure detection letter by being arranged on the second pressure sensor in frequency-changeable compressor exit Number.That is, when air-conditioning system is air conditioner, second pressure sensor need to be also set at the exhaust pipe of frequency-changeable compressor Frequency conversion compressor air-discharging high side pressure during detecting air-conditioning system heating.It is of course also possible to one is assembled behind four-way valve Pressure sensor, when refrigeration are low-pressure lateral pressure, substantially suitable with back pressure.It is high side pressure during heating, substantially It is suitable with pressure at expulsion.
In one embodiment of the invention, controller carries out frequency-changeable compressor according to the operating parameter of frequency-changeable compressor Frequency control further comprises：
S11, controller select first pressure detection signal or second pressure detection signal generation current according to operating mode Refrigerant saturation temperature.
S12, controller obtain target refrigerant saturation temperature.
S13, controller carry out frequency conversion control according to current refrigerant saturation temperature, target refrigerant saturation temperature to frequency-changeable compressor System, wherein, during the frequency control to frequency-changeable compressor, controller is cold to target according to the operating parameter of frequency-changeable compressor Matchmaker's saturation temperature is adjusted.
Also, in one embodiment of the invention, when shutting down, controller is by the target refrigerant saturation temperature after adjustment Initial target refrigerant saturation temperature when spending as outdoor unit start next time.
Wherein, if outdoor unit starts for the first time within the default work period, controller works as front ring according to outdoor unit Border temperature determines target refrigerant saturation temperature.It should be noted that the default work period should broadly understood, can be several years, Or some months.For example, when outdoor unit is close after summer, just it is then turned on until winter, at this moment if in some months When winter afterwards starts for the first time, controller determines target refrigerant saturation temperature according to the current environmental temperature of outdoor unit, without Target refrigerant saturation temperature after the adjustment recorded when being last shutdown (summer a few months ago).
Further, in one embodiment of the invention, the operating parameter of frequency-changeable compressor includes frequency-changeable compressor The start-stop time of run time and frequency-changeable compressor in the first preset time period, controller is according to the operation of frequency-changeable compressor Parameters on target refrigerant saturation temperature, which is adjusted, to be further comprised：Controller judges whether the run time of frequency-changeable compressor is big In or equal to first time threshold value；If it is determined that the run time of frequency-changeable compressor is greater than or equal to the first time threshold value, Then controller obtains start-stop time of the frequency-changeable compressor in the first preset time period；And if frequency-changeable compressor is pre- first If the start-stop time in the period is greater than or equal to the first preset times threshold value, then controller adjusts the mesh according to default step-length Mark refrigerant saturation temperature.
Wherein, specifically control process as described in above-described embodiment 1 and embodiment 2, just repeats no more here.
In another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And the running frequency or running current of frequency-changeable compressor, controller satisfy to target refrigerant according to the operating parameter of frequency-changeable compressor It is adjusted and further comprises with temperature：Controller judges whether the run time of frequency-changeable compressor was greater than or equal to for the second time Threshold value；If it is determined that the run time of frequency-changeable compressor is greater than or equal to the second time threshold, then controller obtains frequency conversion respectively Running frequency or running current before the current operation frequency of compressor or current running current and the second preset time period；Such as Fruit current operation frequency be less than the second preset time period before running frequency or the current running current be less than described the Running current before two preset time periods, then controller holding target refrigerant saturation temperature is constant；If current operation frequency It is greater than or equal to described second more than or equal to the running frequency before the second preset time period or the current running current Running current before preset time period, then controller is according to default step-length adjustment target refrigerant saturation temperature.
Wherein, specifically control process as described in above-described embodiment 3 and embodiment 4, just repeats no more here.
In yet another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And start-stop time of the frequency-changeable compressor in the 3rd preset time period, controller is according to the operating parameter of frequency-changeable compressor to mesh Mark refrigerant saturation temperature, which is adjusted, to be further comprised：Controller judges whether the run time of frequency-changeable compressor is greater than or equal to 3rd time threshold；If it is determined that the run time of frequency-changeable compressor is greater than or equal to the 3rd time threshold, then controller obtains Start-stop time of the frequency-changeable compressor in the 3rd preset time period；And if frequency-changeable compressor in the 3rd preset time period Start-stop time is greater than or equal to the second preset times threshold value, then controller determines whether target refrigerant saturation temperature is more than Or equal to default saturation temperature threshold value；If target refrigerant saturation temperature is greater than or equal to default saturation temperature threshold value, control Device adjusts target refrigerant saturation temperature according to default step-length.
Wherein, specifically control process as described in above-described embodiment 5 and embodiment 6, just repeats no more here.
In yet another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And the running frequency or running current of frequency-changeable compressor, controller satisfy to target refrigerant according to the operating parameter of frequency-changeable compressor It is adjusted and further comprises with temperature：Controller judges whether the run time of frequency-changeable compressor was greater than or equal to for the 4th time Threshold value；If it is determined that the run time of frequency-changeable compressor is greater than or equal to the 4th time threshold, then controller obtains frequency conversion compression The current operation frequency of machine or current running current；Judge whether the current operation frequency of frequency-changeable compressor is greater than or equal to preset Whether the current running current of frequency threshold or the frequency-changeable compressor is greater than or equal to predetermined current threshold；If frequency conversion The current operation frequency of compressor is greater than or equal to predeterminated frequency threshold value or the current running current of the frequency-changeable compressor is big In or equal to the predetermined current threshold, then controller is according to default step-length adjustment target refrigerant saturation temperature.
Wherein, specifically control process as described in above-described embodiment 7 and embodiment 8, just repeats no more here.
In another embodiment of the present invention, the operating parameter of the frequency-changeable compressor includes the frequency-changeable compressor Run time, the controller are adjusted the target refrigerant saturation temperature according to the operating parameter of the frequency-changeable compressor Further comprise：The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to the 5th time threshold； If it is determined that the run time of the frequency-changeable compressor is greater than or equal to the 5th time threshold and the frequency-changeable compressor not Stopped machine, then the controller adjusts the target refrigerant saturation temperature according to default step-length.
Wherein, specifically control process as described in above-described embodiment 9 and embodiment 10, just repeats no more here.
According to one embodiment of present invention, controller is when receiving machine open/close signal, into line delay certain time example If S seconds are handled, to prevent client because maloperation selection causes outdoor unit to start operating, the controller progress mistake of outdoor unit is avoided Judge.That is, after the switching on and shutting down for receiving outdoor unit instruct, controller control outdoor unit delay preset time is for example Start in S seconds or shutdown.
Air conditioner system control method according to embodiments of the present invention, the controller of outdoor unit is according to the operation of frequency-changeable compressor Parameter carries out frequency control independently of indoor unit and to frequency-changeable compressor, without indoor unit and outdoor unit carry out specific communication with Corresponding control parameter is transmitted, reduces control parameter transmission process, reduces the complexity of air-conditioning system, improves air-conditioning system System operational reliability.
The outdoor unit for the air-conditioning system that embodiment according to a third aspect of the present invention proposes described with reference to the accompanying drawings.
Figure 14 is the block diagram according to the outdoor unit of the air-conditioning system of the embodiment of the present invention.As shown in figure 14, the sky The outdoor unit 2 of adjusting system includes frequency-changeable compressor Mc and controller 21.
Wherein, controller 21 is for controlling frequency-changeable compressor, and controller 21 includes：Starting module 201, mesh Mark refrigerant saturation temperature control module 202 and frequency control module 203 (compressor output frequency control module 211).
Starting module 201 is used to obtain the operating mode of air-conditioning system, and starts sky according to the operating mode of air-conditioning system The frequency-changeable compressor Mc of the outdoor unit of adjusting system, target refrigerant saturation temperature control module 202 are used to obtain initial target refrigerant Saturation temperature, and during the frequency control to frequency-changeable compressor Mc, according to the operating parameter of frequency-changeable compressor Mc to target Refrigerant saturation temperature is adjusted, and frequency control module 203 (compressor output frequency control module 211) is used for according to target Refrigerant saturation temperature carries out frequency control to frequency-changeable compressor Mc.
In one embodiment of the invention, target refrigerant saturation temperature control module 202 is additionally operable to adjust when shutting down Target refrigerant saturation temperature when target refrigerant saturation temperature after whole is as outdoor unit 2 next time of start.
As shown in Figure 1B, outdoor unit 2 further includes：The first pressure sensor 23 of frequency-changeable compressor inlet is arranged on, the One pressure sensor 23 generates first pressure when operating mode is refrigeration mode and detects signal.Wherein, when air-conditioning system is single During cold, only first pressure sensor 23 need to be set at the muffler of frequency-changeable compressor Mc to detect air-conditioning system refrigeration time-varying Frequency compressor Mc return-air low-pressure lateral pressures.
According to one embodiment of present invention, as shown in Fig. 2, outdoor unit 2 further includes：It is arranged on frequency-changeable compressor exit Second pressure sensor 24, second pressure sensor 24 operating mode be heating mode when generate second pressure detection letter Number.That is, when air-conditioning system is air conditioner, second pressure need to also be set to sense at the exhaust pipe of frequency-changeable compressor Mc Frequency-changeable compressor Mc exhaust high side pressures when device 24 is to detect air-conditioning system heating.It is of course also possible to it is filled behind four-way valve With a pressure sensor, when refrigeration is low-pressure lateral pressure, substantially suitable with back pressure.It is high pressure side pressure during heating Power is substantially suitable with pressure at expulsion.
Wherein, target refrigerant saturation temperature control module 202 selects first pressure detection signal and the according to operating mode One of two pressure detecting signals generate current refrigerant saturation temperature, and obtain target refrigerant saturation temperature, frequency control module 203 Frequency control is carried out to frequency-changeable compressor Mc according to current refrigerant saturation temperature, target refrigerant saturation temperature.
As shown in Figure 1B or Fig. 2, outdoor unit 2 further includes：Temperature sensor 25, temperature sensor 25 detect 2 institute of outdoor unit Locate the current environmental temperature of environment, wherein, if outdoor unit 2 starts for the first time within the default work period, target refrigerant is satisfied Target refrigerant saturation temperature is determined according to the current environmental temperature of outdoor unit 2 with temperature control modules 202.It should be noted that The default work period should broadly understood, and can be several years, or some months.For example, when outdoor unit 2 is closed in summer Afterwards, just it is then turned on until winter, when at this moment starting for the first time if in the winter after some months, target refrigerant saturation temperature control Molding block 202 determines that target refrigerant saturation temperature rather than last shutdown are (several according to the current environmental temperature of outdoor unit 2 Summer before month) when the adjustment that records after target refrigerant saturation temperature.
In one embodiment of the invention, the run time of the operating parameter of frequency-changeable compressor including frequency-changeable compressor with And start-stop time of the frequency-changeable compressor in the first preset time period.Also, it is more than or equal in the run time of frequency-changeable compressor The start-stop time of first time threshold value and frequency-changeable compressor in the first preset time period is more than or equal to the first preset times threshold value When, target refrigerant saturation temperature control module 202 adjusts target refrigerant saturation temperature according to default step-length.
Specifically, as shown in figure 3, in cooling mode, being configured on outdoor unit 2 and detecting refrigerant low-pressure lateral pressure value First pressure sensor 23, starting module 201 according to the mode selection command control signal received and switching on and shutting down instruction control Signal processed carries out the startup-shutdown operation of refrigeration system.Wherein, starting module 201 is when receiving machine open/close signal, into line delay Certain time is handled for such as S seconds, to prevent client from, because maloperation selection causes outdoor unit 2 to start operating, avoiding the control of outdoor unit Device processed carries out false judgment.
Also, if indoor unit was started for the first time in the default work period, target refrigerant saturation temperature control module 202 Target refrigerant saturation temperature Tes is then determined according to the current environmental temperature of outdoor unit, for example, outdoor environment temperature is at 30-35 DEG C Between, definite initial target refrigerant saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, definite initial target Refrigerant saturation temperature is 3 DEG C, and for outdoor environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C. If indoor unit was started for the first time in the default work period, according to upper one if target refrigerant saturation temperature control module 202 Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during secondary shutdown is started shooting as this.
Then the first pressure that target refrigerant saturation temperature control module 202 is generated according to first pressure sensor 23 detects The current refrigerant saturation temperature Te of signal generation, then frequency control module 203 according to target refrigerant saturation temperature Tes to current cold Matchmaker's saturation temperature Te constantly carries out PID adjustings.Wherein, it is described as follows for PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, when outdoor unit shuts down, target refrigerant saturation temperature control module 202 judges frequency-changeable compressor Run time, if the run time of frequency-changeable compressor is less than first time threshold value such as Y minutes, be not counted in target refrigerant The judgement that saturation temperature control module 202 is modified target refrigerant saturation temperature according to machine stop times, with prevent client because Maloperation selection causes outdoor unit start and stop to operate, and controller is avoided to carry out wrong judgement.
If the run time of frequency-changeable compressor is more than or equal to first time threshold value for example more than Y minutes, normally it is included in The judgement that target refrigerant saturation temperature control module 202 is modified target refrigerant saturation temperature according to machine stop times.And In the first preset time period such as certain time X minutes, target refrigerant saturation temperature control module 202 is stopped according to what is received Machine signal number is more than or equal to situation of the first preset times threshold value for example more than Z times, judges the indoor refrigeration of air-conditioning system Load is smaller, and target refrigerant saturation temperature control module 202 adjusts target refrigerant saturation temperature Tes according to default step-length, i.e., Target refrigerant saturation temperature Tes is constantly corrected upwards, such as adjusts Tes=Tes+1, more fresh target refrigerant saturation temperature Tes, together When the run time of the frequency-changeable compressor returned 0, restart timing, with newer target refrigerant saturation temperature Tes to working as Preceding refrigerant saturation temperature Te constantly carries out PID adjustings, and frequency control module 203 allows frequency-changeable compressor to reduce rotating speed in the running, Refrigerating capacity output is reduced, so as to slowly reduce indoor temperature, reduces the state of outdoor unit frequent shutdown.Meanwhile target refrigerant Saturation temperature control module 202 records current goal refrigerant saturation temperature, can be as the initial target refrigerant started shooting next time Saturation temperature.
Therefore, the outdoor unit of the air-conditioning system of the embodiment of the present invention can influence refrigeration system according to system indoor load situation The situation of system operating parameter is identified and judges, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system Ability play in time, reach design temperature requirement.
In example 2, as shown in figure 4, in a heating mode, target refrigerant saturation temperature control module 202 is to target In cooling mode to the adjustment process class of target refrigerant saturation temperature in the adjustment process of refrigerant saturation temperature and embodiment 1 Seemingly, just no longer repeat one by one here.
In another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And the running frequency or running current of frequency-changeable compressor.Also, when the run time of frequency-changeable compressor is more than or equal to second Between threshold value when, target refrigerant saturation temperature control module 202 obtains the current operation frequency of frequency-changeable compressor or current fortune respectively Running frequency or running current before row electric current and the second preset time period are less than the second preset time in current operation frequency Section before running frequency or the current running current be less than second preset time period before running current when, mesh Marking refrigerant saturation temperature control module 202 keeps target refrigerant saturation temperature constant, and is more than or equal to the in current operation frequency Running frequency or the current running current before two preset time periods are more than or equal to before second preset time period Running current when, target refrigerant saturation temperature control module 202 according to default step-length adjust target refrigerant saturation temperature.
Specifically, as shown in fig. 6, in a heating mode, being configured on outdoor unit 2 and detecting refrigerant high side pressure value Second pressure sensor 24, starting module 201 according to the mode selection command control signal received and switching on and shutting down instruction control The frequency-changeable compressor heating operation of the outer machine of signal control room processed.
Also, if indoor unit was started for the first time in the default work period, target refrigerant saturation temperature control module 202 Target refrigerant saturation temperature Tcs is then determined according to the current environmental temperature of outdoor unit, for example, outdoor environment temperature is at 7-10 DEG C Between, definite initial target refrigerant saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, The target refrigerant saturation temperature that target refrigerant saturation temperature control module 202 records when then being shut down according to the last time is opened as this Initial target refrigerant saturation temperature during machine.
Then the second pressure that target refrigerant saturation temperature control module 202 is generated according to second pressure sensor 24 detects The current refrigerant saturation temperature Tc of signal generation, then frequency control module 203 according to target refrigerant saturation temperature Tcs to current cold Matchmaker's saturation temperature Tc constantly carries out PID adjustings, so as to provide the rate-adaptive pacemaker of frequency-changeable compressor.
In the present embodiment, it is more than or equal to the second time threshold such as certain time U in the run time of frequency-changeable compressor After minute, target refrigerant saturation temperature control module 202 is to the current operation frequency and the second preset time period of frequency-changeable compressor Such as the running frequency before W minutes be compared to judge whether to need to be modified target refrigerant saturation temperature Tcs or Person's target refrigerant saturation temperature control module 202 is to the current running current of frequency-changeable compressor and the second preset time period such as W Running current before minute is compared to judge whether to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor is run U minute, and the current operation frequency of frequency-changeable compressor is less than the fortune before W minutes The current running current of line frequency or frequency-changeable compressor be less than W minutes before running current and do not occurred shutdown action, then Target refrigerant saturation temperature control module 202 is judged to target refrigerant saturation temperature Tcs without amendment, frequency control module 203 maintain current PID control requirement operating, and indoor temperature is made to progressively reach setting target.Meanwhile target refrigerant saturation temperature Control module 202 records current goal refrigerant saturation temperature Tcs, can be as the initial target refrigerant saturation temperature started shooting next time Degree.
After frequency-changeable compressor is run U minute, and the current operation frequency of frequency-changeable compressor is more than or equal to before W minutes The current running current of running frequency or frequency-changeable compressor be more than or equal to W minute before running current and do not occurred shut down move Make, it is believed that it is inadequate compared with heating load frequency-changeable compressor ability need, target refrigerant saturation temperature control module 202 according to Default step-length adjustment target refrigerant saturation temperature Tcs, i.e., constantly correct target refrigerant saturation temperature Tcs, such as adjust upwards Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while the run time of the frequency-changeable compressor is returned 0, restarts Timing constantly carries out PID adjustings, frequency control with newer target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc For module 203 so that frequency-changeable compressor improves rotating speed, raising high-pressure side discharge pressure makes indoor temperature reach setting target.Meanwhile Target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature, can be initial as what is started shooting next time Target refrigerant saturation temperature.
Therefore, the outdoor unit of the air-conditioning system of the embodiment of the present invention can influence heating system according to system indoor load situation The situation of system operating parameter is identified and judges, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system Ability play in time, reach design temperature requirement.
In embodiment 3, as shown in figure 5, in cooling mode, target refrigerant saturation temperature control module 202 is to target In a heating mode to the adjustment process class of target refrigerant saturation temperature in the adjustment process of refrigerant saturation temperature and embodiment 4 Seemingly, just no longer repeat one by one here.
In yet another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And start-stop time of the frequency-changeable compressor in the 3rd preset time period, wherein the run time in frequency-changeable compressor is more than or equal to 3rd time threshold, start-stop time of the frequency-changeable compressor in the 3rd preset time period are more than or equal to the second preset times threshold value, And target refrigerant saturation temperature, when being greater than or equal to default saturation temperature threshold value, target refrigerant saturation temperature control module 202 is pressed Target refrigerant saturation temperature is adjusted according to default step-length.
Specifically, as shown in fig. 7, in cooling mode, being configured on outdoor unit 2 and detecting refrigerant low-pressure lateral pressure value First pressure sensor 23, starting module 201 according to the mode selection command control signal received and switching on and shutting down instruction control Signal processed controls frequency-changeable compressor refrigerating operaton.
Also, if indoor unit was started for the first time in the default work period, target refrigerant saturation temperature control module 202 Target refrigerant saturation temperature Tes is then determined according to the current environmental temperature of outdoor unit, for example, outdoor environment temperature is at 30-35 DEG C Between, definite initial target refrigerant saturation temperature is 6 DEG C, and outdoor environment temperature is between 35-40 DEG C, definite initial target Refrigerant saturation temperature is 3 DEG C, and for outdoor environment temperature between 25-30 DEG C, definite initial target refrigerant saturation temperature is 8 DEG C. If indoor unit was started for the first time in the default work period, according to upper one if target refrigerant saturation temperature control module 202 Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during secondary shutdown is started shooting as this.
Then the first pressure that target refrigerant saturation temperature control module 202 is generated according to first pressure sensor 23 detects The current refrigerant saturation temperature Te of signal generation, then frequency control module 203 according to target refrigerant saturation temperature Tes to current cold Matchmaker's saturation temperature Te constantly carries out PID adjustings.Wherein, it is described as follows for PID control：
The deviation △ e=Te-Tes of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes are (such as current Te=10, Tes=6, then current △ e0=10-6=4), since chip gathered data is discrete, before certain time (such as before 40s) △ e1 and the difference of current △ e0 or the weighted value of △ e1 and △ e0 determine that feedback quantity carries out PID calculating, To draw the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, And compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd are pre-set Constant, △ e1, △ e0 are the feedback variable of real time monitoring.
In the present embodiment, it is more than or equal to the 3rd time threshold such as certain time A in the run time of frequency-changeable compressor After minute, target refrigerant saturation temperature control module 202 judges whether according to the machine stop times received and indoor ability need It needs to be modified target refrigerant saturation temperature Tes, that is, says, target refrigerant saturation temperature control module 202 is judged the 3rd Whether the start-stop time for the frequency-changeable compressor that preset time period receives in such as B minutes is more than or equal to the second preset times for example Whether default saturation temperature threshold value C is greater than or equal to D times and target refrigerant saturation temperature Tes, to determine whether needing pair Target refrigerant saturation temperature Tes is modified.
If the run time of frequency-changeable compressor is more than or equal to the 3rd time threshold for example more than A minutes, normally it is included in Machine stop times were more than or equal to D times in B minutes, and target refrigerant saturation temperature Tes is more than or equal to C, judged the room of air-conditioning system Inside cooling load is smaller, and target refrigerant saturation temperature control module 202 adjusts target refrigerant saturation temperature according to default step-length Tes is spent, i.e., constantly corrects target refrigerant saturation temperature Tes upwards, such as adjusts Tes=Tes+1, more fresh target refrigerant saturation temperature Tes is spent, while the run time of the frequency-changeable compressor is returned 0, restarts timing, with newer target refrigerant saturation temperature Tes constantly carries out PID adjustings to current refrigerant saturation temperature Te, and frequency control module 203 allows frequency-changeable compressor to drop in the running The slow-speed of revolution reduces refrigerating capacity output, so as to slowly reduce indoor temperature, reduces the state of outdoor unit frequent shutdown.Meanwhile mesh It marks refrigerant saturation temperature control module 202 and records current goal refrigerant saturation temperature, it can be as the initial mesh started shooting next time Mark refrigerant saturation temperature.
Therefore, the outdoor unit of the air-conditioning system of the embodiment of the present invention can influence refrigeration system according to system indoor load situation The situation of system operating parameter is identified and judges, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system Ability play in time, reach design temperature requirement.
In embodiment 6, as shown in figure 8, in a heating mode, target refrigerant saturation temperature control module 202 is to target In cooling mode to the adjustment process class of target refrigerant saturation temperature in the adjustment process of refrigerant saturation temperature and embodiment 5 Seemingly, just no longer repeat one by one here.
In yet another embodiment of the present invention, the operating parameter of frequency-changeable compressor includes the run time of frequency-changeable compressor And the running frequency or running current of frequency-changeable compressor, wherein the run time in frequency-changeable compressor was more than or equal to for the 4th time Threshold value, and the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or the current fortune of the frequency-changeable compressor When row electric current is more than or equal to predetermined current threshold, target refrigerant saturation temperature control module 202 adjusts target according to default step-length Refrigerant saturation temperature.
Specifically, as shown in Figure 10, in a heating mode, it is configured on outdoor unit 2 and detects refrigerant high side pressure The second pressure sensor 24 of value, starting module 201 are instructed according to the mode selection command control signal received and switching on and shutting down Control signal controls frequency-changeable compressor heating operation.
Also, if indoor unit was started for the first time in the default work period, target refrigerant saturation temperature control module 202 Target refrigerant saturation temperature Tcs is then determined according to the current environmental temperature of outdoor unit, for example, outdoor environment temperature is at 7-10 DEG C Between, definite initial target refrigerant saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, The target refrigerant saturation temperature that target refrigerant saturation temperature control module 202 records when then being shut down according to the last time is opened as this Initial target refrigerant saturation temperature during machine.
Then the second pressure that target refrigerant saturation temperature control module 202 is generated according to second pressure sensor 24 detects The current refrigerant saturation temperature Tc of signal generation, then frequency control module 203 according to target refrigerant saturation temperature Tcs to current cold Matchmaker's saturation temperature Tc constantly carries out PID adjustings.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor After minute (30 minutes), current operation frequency and default frequency of the target refrigerant saturation temperature control module 202 to frequency-changeable compressor Such as F hertz of rate threshold value is compared to judge whether to need to be modified target refrigerant saturation temperature Tcs or target is cold Matchmaker's saturation temperature control module 202 to the current running current of frequency-changeable compressor compared with predetermined current threshold with judge be It is no to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor is run E minute, and the current operation frequency of frequency-changeable compressor more than or equal to F hertz or The current flow of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor heating load of air-conditioning system compares Greatly, target refrigerant saturation temperature control module 202 adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly upwards Target refrigerant saturation temperature Tcs is corrected, such as adjusts Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while by institute The run time for stating frequency-changeable compressor returns 0, restarts timing, with newer target refrigerant saturation temperature Tcs to current refrigerant Saturation temperature Tc constantly carries out PID adjustings, and frequency control module 203 improves high pressure as early as possible so that frequency-changeable compressor raising rotating speed Discharge pressure makes indoor temperature reach setting target.Meanwhile target refrigerant saturation temperature control module 202 records current goal Refrigerant saturation temperature, can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the outdoor unit of the air-conditioning system of the embodiment of the present invention can influence heating system according to system indoor load situation The situation of system operating parameter is identified and judges, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system Ability play in time, reach design temperature requirement.
In embodiment 7, as shown in figure 9, in cooling mode, target refrigerant saturation temperature control module 202 is to target In a heating mode to the adjustment process class of target refrigerant saturation temperature in the adjustment process of refrigerant saturation temperature and embodiment 8 Seemingly, just no longer repeat one by one here.
In another embodiment of the present invention, the operating parameter of the frequency-changeable compressor includes the frequency-changeable compressor Run time, wherein the run time in the frequency-changeable compressor is more than or equal to the 5th time threshold, and the frequency-changeable compressor When not stopping machine, the target refrigerant saturation temperature control module adjusts the target refrigerant saturation temperature according to default step-length.
Specifically, as shown in figure 12, in a heating mode, it is configured on outdoor unit 2 and detects refrigerant high side pressure The second pressure sensor 24 of value, starting module 201 are instructed according to the mode selection command control signal received and switching on and shutting down Control signal controls frequency-changeable compressor heating operation.
Also, if indoor unit was started for the first time in the default work period, target refrigerant saturation temperature control module 202 Target refrigerant saturation temperature Tcs is then determined according to the current environmental temperature of outdoor unit, for example, outdoor environment temperature is at 7-10 DEG C Between, definite initial target refrigerant saturation temperature is 46 DEG C.If indoor unit was started for the first time in the default work period, The target refrigerant saturation temperature that target refrigerant saturation temperature control module 202 records when then being shut down according to the last time is opened as this Initial target refrigerant saturation temperature during machine.
Then the second pressure that target refrigerant saturation temperature control module 202 is generated according to second pressure sensor 24 detects The current refrigerant saturation temperature Tc of signal generation, then frequency control module 203 according to target refrigerant saturation temperature Tcs to current cold Matchmaker's saturation temperature Tc constantly carries out PID adjustings.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, target refrigerant is satisfied With temperature control modules 202 by judging whether frequency-changeable compressor stopped machine to judge whether to need to target refrigerant saturation temperature Tcs is modified.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor heating load of system is bigger, and target refrigerant saturation temperature control module 202 adjusts target refrigerant according to default step-length Saturation temperature Tcs constantly corrects target refrigerant saturation temperature Tcs, such as adjusts Tcs=Tcs+1 upwards, more fresh target refrigerant Saturation temperature Tcs, while the run time of the frequency-changeable compressor is returned 0, restart timing, satisfied with newer target refrigerant PID adjustings are constantly carried out to current refrigerant saturation temperature Tc with temperature Tcs, frequency control module 203 is so that frequency-changeable compressor carries High rotating speed improves high pressure discharge pressure, indoor temperature is made to reach setting target as early as possible.Meanwhile target refrigerant saturation temperature controls Module 202 records current goal refrigerant saturation temperature, can be as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the outdoor unit of the air-conditioning system of the embodiment of the present invention can influence heating system according to system indoor load situation The situation of system operating parameter is identified and judges, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system Ability play in time, reach design temperature requirement.
In embodiment 9, as shown in figure 11, in cooling mode, target refrigerant saturation temperature control module 202 is to target In a heating mode to the adjustment process class of target refrigerant saturation temperature in the adjustment process of refrigerant saturation temperature and embodiment 10 Seemingly, just no longer repeat one by one here.
The outdoor unit of air-conditioning system according to embodiments of the present invention is controlled without carrying out particular communication with indoor unit Parameter so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
In addition, fourth aspect present invention embodiment also proposed a kind of air-conditioning system, it is real including fourth aspect present invention Apply the outdoor unit of the air-conditioning system of example proposition.
Air-conditioning system according to embodiments of the present invention, the controller of outdoor unit is according to the operating parameter of frequency-changeable compressor to becoming Frequency compressor carries out frequency control, without indoor unit or carries out particular communication without outdoor unit and indoor unit and obtains control ginseng Number so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
Any process described otherwise above or method description are construed as in flow chart or herein, represent to include Module, segment or the portion of the code of the executable instruction of one or more the step of being used to implement specific logical function or process Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction Row system, device or equipment instruction fetch and the system executed instruction) it uses or combines these instruction execution systems, device or set It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment It puts.The more specific example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring Connecting portion (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk are read-only Memory (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable Medium because can for example by carrying out optical scanner to paper or other media, then into edlin, interpretation or if necessary with Other suitable methods are handled electronically to obtain described program, are then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combination thereof.Above-mentioned In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage Or firmware is realized.If for example, with hardware come realize in another embodiment, can be under well known in the art Any one of row technology or their combination are realized：With for the logic gates to data-signal realization logic function Discrete logic, have suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realize all or part of step that above-described embodiment method carries Suddenly it is that relevant hardware can be instructed to complete by program, the program can be stored in a kind of computer-readable storage medium In matter, the program upon execution, one or a combination set of the step of including embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, it can also That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould The form that hardware had both may be employed in block is realized, can also be realized in the form of software function module.The integrated module is such as Fruit is realized in the form of software function module and is independent production marketing or in use, can also be stored in a computer In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiments or example in combine in an appropriate manner.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace And modification, the scope of the present invention is by appended claims and its equivalent limits.

Claims (34)

1. a kind of air-conditioning system, which is characterized in that including：
Indoor unit；And
Outdoor unit, the outdoor unit include：
Frequency-changeable compressor；With
Controller, the controller is according to the operating parameter of the frequency-changeable compressor and independently of the indoor unit and to the change Frequency compressor carries out frequency control；
Wherein, the outdoor unit further includes：
Communicator, the communicator is for receiving remote controler, the switching on and shutting down instruction that line control machine directly transmits and mode selection command, Wherein, the controller is according to the operating parameter of the frequency-changeable compressor and the corresponding operating mode pair of the mode selection command The frequency-changeable compressor carries out frequency control；
The first pressure sensor of the frequency-changeable compressor inlet is arranged on, the first pressure sensor is in the Working mould First pressure is generated when formula is refrigeration mode and detects signal；
The second pressure sensor in the frequency-changeable compressor exit is arranged on, the second pressure sensor is in the Working mould Second pressure is generated when formula is heating mode and detects signal；
Also, the controller selects the first pressure detection signal and second pressure to detect signal according to the operating mode One of the current refrigerant saturation temperature of generation, and obtain target refrigerant saturation temperature, and according to the current refrigerant saturation temperature, institute It states target refrigerant saturation temperature and frequency control is carried out to the frequency-changeable compressor,
Wherein, during the frequency control to the frequency-changeable compressor, the controller is according to the fortune of the frequency-changeable compressor Row parameter is adjusted the target refrigerant saturation temperature.
2. air-conditioning system as described in claim 1, which is characterized in that the outdoor unit further includes：
Temperature sensor, the temperature sensor detect the current environmental temperature of the outdoor unit local environment, wherein, if institute When stating outdoor unit and starting for the first time within the default work period, the controller is true according to the current environmental temperature of the outdoor unit The fixed target refrigerant saturation temperature.
3. air-conditioning system as described in claim 1, which is characterized in that the controller is when shutting down, by the institute after adjustment Initial target refrigerant saturation temperature when stating target refrigerant saturation temperature as outdoor unit start next time.
4. air-conditioning system as described in claim 1, which is characterized in that the operating parameter of the frequency-changeable compressor includes the change The start-stop time of the run time of frequency compressor and the frequency-changeable compressor in the first preset time period.
5. air-conditioning system as claimed in claim 4, which is characterized in that be more than or equal in the run time of the frequency-changeable compressor It is default that the start-stop time of first time threshold value and the frequency-changeable compressor in first preset time period is more than or equal to first During frequency threshold value, the controller adjusts the target refrigerant saturation temperature according to default step-length.
6. air-conditioning system as described in claim 1, which is characterized in that the operating parameter of the frequency-changeable compressor includes the change The running frequency or running current of the run time of frequency compressor and the frequency-changeable compressor.
7. air-conditioning system as claimed in claim 6, which is characterized in that be more than or equal in the run time of the frequency-changeable compressor During the second time threshold, the controller obtain respectively the frequency-changeable compressor current operation frequency or current running current and Running frequency or running current before second preset time period；
Running frequency or the current operation electricity before the current operation frequency is less than second preset time period When flowing the running current before being less than second preset time period, the controller keeps the target refrigerant saturation temperature not Become, and the running frequency before the current operation frequency is more than or equal to second preset time period or the current fortune Row electric current be more than or equal to second preset time period before running current when, the controller according to default step-length adjust institute State target refrigerant saturation temperature.
8. air-conditioning system as described in claim 1, which is characterized in that the operating parameter of the frequency-changeable compressor includes the change The start-stop time of the run time of frequency compressor and the frequency-changeable compressor in the 3rd preset time period,
Wherein it is more than or equal to the 3rd time threshold in the run time of the frequency-changeable compressor, the frequency-changeable compressor is described the Start-stop time in three preset time periods is more than or equal to the second preset times threshold value, and the target refrigerant saturation temperature be more than or During equal to default saturation temperature threshold value, the controller adjusts the target refrigerant saturation temperature according to default step-length.
9. air-conditioning system as described in claim 1, which is characterized in that the operating parameter of the frequency-changeable compressor includes the change The running frequency or running current of the run time of frequency compressor and the frequency-changeable compressor,
Wherein it is more than or equal to the 4th time threshold in the run time of the frequency-changeable compressor, and the frequency-changeable compressor is current Running frequency is more than or equal to predeterminated frequency threshold value or the current running current of the frequency-changeable compressor is more than or equal to predetermined current During threshold value, the controller adjusts the target refrigerant saturation temperature according to default step-length.
10. air-conditioning system as described in claim 1, which is characterized in that the operating parameter of the frequency-changeable compressor includes described The run time of frequency-changeable compressor, wherein when the run time of the frequency-changeable compressor is more than or equal to the 5th time threshold and described When frequency-changeable compressor did not stopped machine, the controller adjusts the target refrigerant saturation temperature according to default step-length.
11. air-conditioning system as described in claim 1, which is characterized in that the controller is receiving the switching on and shutting down instruction Afterwards, preset time start or shutdown are postponed.
12. a kind of air conditioner system control method, which is characterized in that comprise the following steps：
Obtain the operating parameter of the frequency-changeable compressor of the outdoor unit of the air-conditioning system；With
Using the controller of the outdoor unit according to the operating parameter of the frequency-changeable compressor independently of the room of the air-conditioning system Interior machine carries out frequency control to the frequency-changeable compressor of the outdoor unit, wherein,
When operating mode is refrigeration mode, the controller is by being arranged on the first pressure of the frequency-changeable compressor inlet Sensor obtains first pressure detection signal；
When the operating mode is heating mode, the controller is by being arranged on the second of the frequency-changeable compressor exit Pressure sensor obtains second pressure detection signal；
Also, the controller frequency-changeable compressor is carried out according to the operating parameter of the frequency-changeable compressor frequency control into One step includes：
The controller selects the first pressure detection signal or second pressure to detect signal generation according to the operating mode Current refrigerant saturation temperature；
The controller obtains target refrigerant saturation temperature；
The controller according to the current refrigerant saturation temperature, the target refrigerant saturation temperature to the frequency-changeable compressor into Row frequency control, wherein, during the frequency control to the frequency-changeable compressor, the controller is compressed according to the frequency conversion The operating parameter of machine is adjusted the target refrigerant saturation temperature.
13. air conditioner system control method as claimed in claim 12, which is characterized in that if the outdoor unit is in default work When starting for the first time in the cycle, the controller determines the target refrigerant saturation according to the current environmental temperature of the outdoor unit Temperature.
14. air conditioner system control method as claimed in claim 12, which is characterized in that further include：
When shutting down, the controller is started shooting the target refrigerant saturation temperature after adjustment as the outdoor unit next time When initial target refrigerant saturation temperature.
15. air conditioner system control method as claimed in claim 12, which is characterized in that the operating parameter of the frequency-changeable compressor The start-stop time of run time and the frequency-changeable compressor in the first preset time period including the frequency-changeable compressor, institute It states controller and the target refrigerant saturation temperature is adjusted according to the operating parameter of the frequency-changeable compressor and further comprise：
The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to first time threshold value；
If it is determined that the run time of the frequency-changeable compressor is greater than or equal to the first time threshold value, then the controller obtains Take start-stop time of the frequency-changeable compressor in first preset time period；And
If start-stop time of the frequency-changeable compressor in first preset time period is greater than or equal to the first preset times Threshold value, then the controller is according to the default step-length adjustment target refrigerant saturation temperature.
16. air conditioner system control method as claimed in claim 12, which is characterized in that the operating parameter of the frequency-changeable compressor The running frequency or running current of run time and the frequency-changeable compressor including the frequency-changeable compressor, the controller The target refrigerant saturation temperature is adjusted according to the operating parameter of the frequency-changeable compressor and is further comprised：
The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to the second time threshold；
If it is determined that the run time of the frequency-changeable compressor is greater than or equal to second time threshold, then the controller divides The operation frequency before the current operation frequency of the frequency-changeable compressor or current running current and the second preset time period is not obtained Rate or running current；
If the current operation frequency is less than the running frequency before second preset time period or the current operation Electric current is less than the running current before second preset time period, then the controller keeps the target refrigerant saturation temperature It is constant；
If the current operation frequency be greater than or equal to second preset time period before running frequency or it is described work as Preceding running current is greater than or equal to the running current before second preset time period, then the controller is according to default step-length Adjust the target refrigerant saturation temperature.
17. air conditioner system control method as claimed in claim 12, which is characterized in that the operating parameter of the frequency-changeable compressor The start-stop time of run time and the frequency-changeable compressor in the 3rd preset time period including the frequency-changeable compressor, institute It states controller and the target refrigerant saturation temperature is adjusted according to the operating parameter of the frequency-changeable compressor and further comprise：
The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to the 3rd time threshold；
If it is determined that the run time of the frequency-changeable compressor is greater than or equal to the 3rd time threshold, then the controller obtains Take start-stop time of the frequency-changeable compressor in the 3rd preset time period；And
If start-stop time of the frequency-changeable compressor in the 3rd preset time period is greater than or equal to the second preset times Threshold value, then the controller determine whether the target refrigerant saturation temperature is greater than or equal to default saturation temperature threshold Value；
If the target refrigerant saturation temperature is greater than or equal to the default saturation temperature threshold value, the controller is according to pre- If step-length adjusts the target refrigerant saturation temperature.
18. air conditioner system control method as claimed in claim 12, which is characterized in that the operating parameter of the frequency-changeable compressor The running frequency or running current of run time and the frequency-changeable compressor including the frequency-changeable compressor, the controller The target refrigerant saturation temperature is adjusted according to the operating parameter of the frequency-changeable compressor and is further comprised：
The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to the 4th time threshold；
If it is determined that the run time of the frequency-changeable compressor is greater than or equal to the 4th time threshold, then the controller obtains Take the current operation frequency of the frequency-changeable compressor or current running current；
Judge whether the current operation frequency of the frequency-changeable compressor is greater than or equal to predeterminated frequency threshold value or the frequency conversion pressure Whether the current running current of contracting machine is greater than or equal to predetermined current threshold；
If the current operation frequency of the frequency-changeable compressor is greater than or equal to the predeterminated frequency threshold value or the frequency conversion pressure The current running current of contracting machine is greater than or equal to the predetermined current threshold, then the controller is according to described in the adjustment of default step-length Target refrigerant saturation temperature.
19. air conditioner system control method as claimed in claim 12, which is characterized in that the operating parameter of the frequency-changeable compressor Include the run time of the frequency-changeable compressor, the controller is according to the operating parameter of the frequency-changeable compressor to the target Refrigerant saturation temperature, which is adjusted, to be further comprised：
The controller judges whether the run time of the frequency-changeable compressor is greater than or equal to the 5th time threshold；
If it is determined that the run time of the frequency-changeable compressor is greater than or equal to the 5th time threshold and the frequency conversion is compressed Machine did not stopped machine, then the controller adjusts the target refrigerant saturation temperature according to default step-length.
20. air conditioner system control method as claimed in claim 12, which is characterized in that further include：
After the switching on and shutting down for receiving the outdoor unit instruct, the controller controls the outdoor unit delay preset time to open Machine or shutdown.
21. a kind of outdoor unit of air-conditioning system, which is characterized in that including：
Frequency-changeable compressor；
Controller, for controlling the frequency-changeable compressor, the controller includes the controller：
Starting module for obtaining the operating mode of air-conditioning system, and starts the air-conditioning according to the operating mode of air-conditioning system The frequency-changeable compressor of the outdoor unit of system；
Target refrigerant saturation temperature control module for obtaining initial target refrigerant saturation temperature, and is compressed to the frequency conversion During the frequency control of machine, the target refrigerant saturation temperature is adjusted according to the operating parameter of the frequency-changeable compressor It is whole；
Frequency control module, for carrying out frequency control to the frequency-changeable compressor according to the target refrigerant saturation temperature.
22. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that the target refrigerant saturation temperature control Module, be additionally operable to shut down when using the target refrigerant saturation temperature after adjustment as the outdoor unit next time start shooting when Target refrigerant saturation temperature.
23. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that further include：
The first pressure sensor of the frequency-changeable compressor inlet is arranged on, the first pressure sensor is in the Working mould First pressure is generated when formula is refrigeration mode and detects signal.
24. the outdoor unit of air-conditioning system as claimed in claim 23, which is characterized in that further include：
The second pressure sensor in the frequency-changeable compressor exit is arranged on, the second pressure sensor is in the Working mould Second pressure is generated when formula is heating mode and detects signal.
25. the outdoor unit of air-conditioning system as claimed in claim 24, which is characterized in that the target refrigerant saturation temperature control Module selects the generation of one of the first pressure detection signal and second pressure detection signal current cold according to the operating mode Matchmaker's saturation temperature, and target refrigerant saturation temperature is obtained, the frequency control module is according to the current refrigerant saturation temperature, institute It states target refrigerant saturation temperature and frequency control is carried out to the frequency-changeable compressor.
26. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that further include：
Temperature sensor, the temperature sensor detect the current environmental temperature of the outdoor unit local environment, wherein, if institute When stating outdoor unit and starting for the first time within the default work period, the target refrigerant saturation temperature control module is according to the outdoor The current environmental temperature of machine determines the target refrigerant saturation temperature.
27. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that the operating parameter of the frequency-changeable compressor The start-stop time of run time and the frequency-changeable compressor in the first preset time period including the frequency-changeable compressor.
28. the outdoor unit of air-conditioning system as claimed in claim 27, which is characterized in that in the operation of the frequency-changeable compressor Between be more than or equal to the start-stop time of first time threshold value and the frequency-changeable compressor in first preset time period be more than etc. When the first preset times threshold value, the target refrigerant saturation temperature control module adjusts the target refrigerant according to default step-length Saturation temperature.
29. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that the operating parameter of the frequency-changeable compressor The running frequency or running current of run time and the frequency-changeable compressor including the frequency-changeable compressor.
30. the outdoor unit of air-conditioning system as claimed in claim 29, which is characterized in that in the operation of the frequency-changeable compressor Between be more than or equal to the second time threshold when, the target refrigerant saturation temperature control module obtains the frequency-changeable compressor respectively Running frequency or running current before current operation frequency or current running current and the second preset time period；
Running frequency or the current operation electricity before the current operation frequency is less than second preset time period When flowing the running current before being less than second preset time period, described in the target refrigerant saturation temperature control module holding Target refrigerant saturation temperature is constant, and the operation before the current operation frequency is more than or equal to second preset time period When frequency or the current running current are more than or equal to the running current before second preset time period, the target is cold Matchmaker's saturation temperature control module adjusts the target refrigerant saturation temperature according to default step-length.
31. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that the operating parameter of the frequency-changeable compressor The start-stop time of run time and the frequency-changeable compressor in the 3rd preset time period including the frequency-changeable compressor,
Wherein it is more than or equal to the 3rd time threshold in the run time of the frequency-changeable compressor, the frequency-changeable compressor is described the Start-stop time in three preset time periods is more than or equal to the second preset times threshold value, and the target refrigerant saturation temperature be more than or During equal to default saturation temperature threshold value, the target refrigerant saturation temperature control module is cold according to the default step-length adjustment target Matchmaker's saturation temperature.
32. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that the operating parameter of the frequency-changeable compressor The running frequency or running current of run time and the frequency-changeable compressor including the frequency-changeable compressor,
Wherein it is more than or equal to the 4th time threshold in the run time of the frequency-changeable compressor, and the frequency-changeable compressor is current Running frequency is more than or equal to predeterminated frequency threshold value or the current running current of the frequency-changeable compressor is more than or equal to predetermined current During threshold value, the target refrigerant saturation temperature control module adjusts the target refrigerant saturation temperature according to default step-length.
33. the outdoor unit of air-conditioning system as claimed in claim 21, which is characterized in that the operating parameter of the frequency-changeable compressor Include the run time of the frequency-changeable compressor,
Wherein it is more than or equal to the 5th time threshold in the run time of the frequency-changeable compressor, and the frequency-changeable compressor did not stopped During machine, the target refrigerant saturation temperature control module adjusts the target refrigerant saturation temperature according to default step-length.
34. a kind of air-conditioning system, which is characterized in that include the outdoor of such as claim 21-33 any one of them air-conditioning system Machine.
CN201410028602.8A 2014-01-21 2014-01-21 Air-conditioning system and its control method, the outdoor unit of air-conditioning system Active CN104791946B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201410028602.8A CN104791946B (en) 2014-01-21 2014-01-21 Air-conditioning system and its control method, the outdoor unit of air-conditioning system
US14/472,049 US9879893B2 (en) 2014-01-21 2014-08-28 Air conditioning system, method for controlling air conditioning system, and outdoor apparatus of air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410028602.8A CN104791946B (en) 2014-01-21 2014-01-21 Air-conditioning system and its control method, the outdoor unit of air-conditioning system

Publications (2)

Publication Number Publication Date
CN104791946A CN104791946A (en) 2015-07-22
CN104791946B true CN104791946B (en) 2018-06-05

Family

ID=53556962

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410028602.8A Active CN104791946B (en) 2014-01-21 2014-01-21 Air-conditioning system and its control method, the outdoor unit of air-conditioning system

Country Status (1)

Country Link
CN (1) CN104791946B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108844188A (en) * 2018-06-26 2018-11-20 珠海格力电器股份有限公司 Variable frequency air conditioner and control method and control device thereof
CN109751738B (en) * 2018-12-12 2021-10-15 广东美的暖通设备有限公司 Control method and device for multi-split air conditioner, outdoor unit and multi-split air conditioner
CN110617610B (en) * 2019-09-20 2021-05-28 海信（山东）空调有限公司 Compressor frequency control method, outdoor unit and variable frequency air conditioner
CN110686356A (en) * 2019-09-23 2020-01-14 珠海格力电器股份有限公司 Control method for preventing frequent shutdown of air conditioner, computer readable storage medium and air conditioner
US11841176B2 (en) * 2021-12-01 2023-12-12 Haier Us Appliance Solutions, Inc. Method of operating an electronic expansion valve in an air conditioner unit
CN117469163B (en) * 2023-10-25 2024-06-11 江森自控日立万宝空调(广州)有限公司 Control method and control unit of variable-frequency screw compressor with adjustable pressure ratio

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002364964A (en) * 2001-06-05 2002-12-18 Mitsubishi Electric Corp Freezing device and freezing system
JP2003254589A (en) * 2002-02-28 2003-09-10 Matsushita Electric Ind Co Ltd Air conditioner
JP2008249267A (en) * 2007-03-30 2008-10-16 Mitsubishi Electric Corp Air conditioner
CN202328540U (en) * 2011-12-13 2012-07-11 Tcl空调器(中山)有限公司 Frequency-conversion air conditioner
CN103471215A (en) * 2013-09-24 2013-12-25 江苏春兰空调设备有限公司 Variable-frequency multi-connected air conditioning unit self-adaptive control device and variable-frequency multiple machine unit self-adaptive control method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002364964A (en) * 2001-06-05 2002-12-18 Mitsubishi Electric Corp Freezing device and freezing system
JP2003254589A (en) * 2002-02-28 2003-09-10 Matsushita Electric Ind Co Ltd Air conditioner
JP2008249267A (en) * 2007-03-30 2008-10-16 Mitsubishi Electric Corp Air conditioner
CN202328540U (en) * 2011-12-13 2012-07-11 Tcl空调器(中山)有限公司 Frequency-conversion air conditioner
CN103471215A (en) * 2013-09-24 2013-12-25 江苏春兰空调设备有限公司 Variable-frequency multi-connected air conditioning unit self-adaptive control device and variable-frequency multiple machine unit self-adaptive control method

Also Published As

Publication number Publication date
CN104791946A (en) 2015-07-22

Similar Documents

Publication Publication Date Title
CN104791944B (en) Air-conditioning system and its control method, the outdoor unit of air-conditioning system
CN104791943B (en) Air-conditioning system and its control method, the outdoor unit of air-conditioning system
CN104791946B (en) Air-conditioning system and its control method, the outdoor unit of air-conditioning system
CN104791941B (en) Air-conditioning system and its control method, the outdoor unit of air-conditioning system
CN106524415B (en) Air conditioner control method and device and air conditioner
CN106403192B (en) Anti-condensation operation control method and device and multi-connected air conditioning system
CN103512153B (en) Air-conditioning system with enthalpy increased through vapor injection and control method thereof
CN105605741B (en) The dehumidification control method and device of air-conditioning
CN110736248B (en) Control method and device for air conditioner air outlet temperature
CN105222445A (en) The control method of electric expansion valve, device and air-conditioner set and control method thereof
CN102538144A (en) Control method of multi-connected air conditioning unit
CN103604276A (en) Refrigerator as well as temperature control device and temperature control method thereof
CN109269020A (en) Air conditioner control method and device and air conditioner
CN105518396B (en) Air-conditioning system
CN111780372A (en) Control method of one-driving-multiple air conditioner
CN107131616A (en) Variable frequency air conditioner and anti-freezing method, device and system thereof
CN109945563B (en) Multi-split air conditioning system and method and device for initializing electronic expansion valve thereof
CN110173825A (en) Progress control method, control device, air conditioner and computer readable storage medium
CN106546420B (en) Valve body detection method and device, the air-conditioning system of air-conditioning model machine
CN104791945B (en) Air-conditioning system and its control method, the outdoor unit of air-conditioning system
CN104791942B (en) Air-conditioning system and its control method, the outdoor unit of air-conditioning system
CN112902404B (en) Air conditioner sterilization control method and device and air conditioner
CN105091193B (en) Adjusting method, device and the frequency-conversion air-conditioning system of frequency-changeable compressor running frequency
CN109210692A (en) Automatic air conditioner control method and air conditioner
CN105091195B (en) Adjusting method, device and the frequency-conversion air-conditioning system of frequency-changeable compressor running frequency

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant