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CN114135977A - Air conditioner heating control method and device and air conditioner - Google Patents

Air conditioner heating control method and device and air conditioner Download PDF

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Publication number
CN114135977A
CN114135977A CN202111389345.7A CN202111389345A CN114135977A CN 114135977 A CN114135977 A CN 114135977A CN 202111389345 A CN202111389345 A CN 202111389345A CN 114135977 A CN114135977 A CN 114135977A
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China
Prior art keywords
temperature
air conditioner
outdoor
coil
threshold
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Granted
Application number
CN202111389345.7A
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Chinese (zh)
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CN114135977B (en
Inventor
秦宪
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.)
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Original Assignee
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN202111389345.7A priority Critical patent/CN114135977B/en
Publication of CN114135977A publication Critical patent/CN114135977A/en
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Publication of CN114135977B publication Critical patent/CN114135977B/en
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    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention provides an air conditioner heating control method, an air conditioner heating control device and an air conditioner; wherein, the method comprises the following steps: acquiring detection parameters of the air conditioner during heating operation; wherein, detecting the parameter includes: outdoor ambient temperature TDry ballOutdoor relative humidity RH and ReplacingTemperature T of heater coilCoil pipe(ii) a Analyzing the relation between the detection parameters and preset parameter thresholds, and generating corresponding control modes according to analysis results; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively; and controlling the air conditioner to operate according to the control mode. In the above mode, the corresponding control mode is generated through the relation between the detection parameter and the preset parameter threshold value, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are accurately controlled respectively, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the chassis deicing device has a good practical value.

Description

Air conditioner heating control method and device and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heating control method and device of an air conditioner and the air conditioner.
Background
When the air conditioner operates in heating mode, when the outdoor environment temperature is low, water vapor in the air can form condensed water on the outdoor heat exchanger to be separated out. When the condensed water is lower than 0 ℃, the condensed water can be gradually frozen, and ice blocks can block a drain hole of a chassis of the air conditioner in serious cases, so that the drainage of the chassis is not smooth, and in turn, the frosting of the heat exchanger can be aggravated, and the service performance of the air conditioner is seriously influenced. Based on this, the existing air conditioner is additionally provided with an electric heating belt on the chassis for melting ice blocks on the chassis and accelerating the drainage of the chassis.
The existing control modes of the chassis electric heating belt mainly comprise the following two modes: (1) when the air conditioner is in a heating state, the electric heating belt of the chassis is forcibly started no matter whether the chassis is frozen or not, so that the power consumption of the air conditioner is serious, and the service life of the electric heating belt of the chassis is influenced; (2) by detecting the outdoor environment temperature and setting the opening or closing of the electric heating belt of the chassis, but under the same outdoor environment temperature, the relative humidity is higher, the water vapor content in the air is higher, the probability of the ice blockage of the chassis is higher, the frost formation of the heat exchanger is aggravated, and the service performance of the air conditioner is seriously influenced. Therefore, how to reduce the frosting of the heat exchanger and improve the deicing efficiency of the chassis in the heating operation of the air conditioner is a problem to be solved urgently.
Disclosure of Invention
In view of this, the present invention provides a heating control method and device for an air conditioner, and an air conditioner, which reduce the possibility of frosting of a heat exchanger, improve the chassis deicing efficiency, and have a good practical value.
In a first aspect, an embodiment of the present invention provides a heating control method for an air conditioner, which is applied to a controller of the air conditioner, and the air conditioner further includes a controller of the air conditionerThe controller is in communication connection with the compressor, the indoor fan, the outdoor fan, the electronic expansion valve and the chassis electric heating belt; the method comprises the following steps: acquiring detection parameters of the air conditioner during heating operation; wherein, detecting the parameter includes: outdoor ambient temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipe(ii) a Analyzing the relation between the detection parameters and preset parameter thresholds, and generating corresponding control modes according to analysis results; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively; and controlling the air conditioner to operate according to the control mode.
According to the air conditioner heating control method, the outdoor environment temperature and the outdoor relative humidity are fully considered, the corresponding control modes are generated through the relation between the detection parameters and the preset parameter threshold value, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are accurately controlled respectively, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the air conditioner heating control method has a good practical value.
Preferably, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the preset parameter threshold includes a preset dry bulb temperature threshold, a preset relative humidity threshold, and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold interval; the step of analyzing the relationship between the detection parameters and the preset parameter threshold and generating the corresponding control mode according to the analysis result comprises the following steps: if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold and the outdoor relative humidity RH is not less than the first relative humidity threshold, generating a first control mode; wherein the first control mode comprises performing the following actions: starting an electric heating belt of the chassis; reducing the frequency of the compressor to 75% of the current operating frequency; reducing the rotating speed of the indoor fan to 75% of the current rotating speed; increasing the rotating speed of the outdoor fan to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd adjusting the opening degree of the electronic expansion valve within the first coil temperature threshold interval.
Preferably, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the preset coil temperature threshold includes a second coil temperature threshold interval; the step of analyzing the relationship between the detection parameter and the preset parameter threshold and generating the corresponding control mode according to the analysis result further includes: if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold, the outdoor relative humidity RH is less than the first relative humidity threshold and is not less than the second relative humidity threshold, generating a second control mode; wherein the second control mode comprises performing the following actions: starting an electric heating belt of the chassis, and closing the electric heating belt for a specified time after the electric heating belt runs for the first time; reducing the frequency of the compressor to 80% of the current operating frequency; reducing the rotating speed of the indoor fan to 80% of the current rotating speed; the rotating speed of the outdoor fan is increased to 95% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd the temperature threshold interval of the second coil pipe, and the opening degree of the electronic expansion valve is adjusted.
Preferably, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the preset coil temperature threshold includes a third coil temperature threshold interval; the step of analyzing the relation between the detection parameters and the preset parameter threshold value and generating the corresponding control mode according to the analysis result further comprises the following steps: if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold and the outdoor relative humidity RH is less than the second relative humidity threshold, generating a third control mode; wherein the third control mode includes performing the following actions: starting the chassis electric heating belt, and closing the specified time after running for the second time; reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the rotating speed of the outdoor fan is increased to 90% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd a third coil temperature threshold interval, and adjusting the opening degree of the electronic expansion valve.
Preferably, embodiments of the present invention provide a fourth possible implementation manner of the first aspect, wherein the first coil temperature threshold region is set as described aboveThe temperature control system comprises a first coil temperature threshold and a second coil temperature threshold, wherein the first coil temperature threshold is greater than the second coil temperature threshold; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd a first coil temperature threshold interval, and adjusting the opening degree of the electronic expansion valve, wherein the step comprises the following steps: if the temperature T of the coil of the heat exchangerCoil pipeIf the temperature is larger than the first coil temperature threshold value, adjusting the opening degree of the electronic expansion valve according to a preset interval and a first opening degree increment; if the temperature T of the coil of the heat exchangerCoil pipeThe opening degree of the electronic expansion valve is adjusted and controlled according to a preset interval and a second opening degree increment when the temperature is not more than the temperature threshold of the first coil pipe and is more than the temperature threshold of the second coil pipe; if the temperature T of the coil of the heat exchangerCoil pipeThe temperature of the electronic expansion valve is not greater than the temperature threshold of the second coil pipe, and the electronic expansion valve is controlled to keep the current opening; wherein the first opening degree increment is greater than the second opening degree increment.
Preferably, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the first opening degree increment is 10 degrees, and the second opening degree increment is 5 degrees.
Preferably, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the method further includes: acquiring detection parameters of the air conditioner during defrosting operation; analyzing the relation between the detection parameters and preset parameter thresholds during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result; and controlling the operation of the chassis electric heating belt according to the electric heating control mode until defrosting is finished.
Preferably, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the step of obtaining a detection parameter during a heating operation of an air conditioner includes: obtaining outdoor ambient temperature TDry ballTemperature T of coil pipe of heat exchangerCoil pipeAnd outdoor environment wet bulb temperature TWet ball(ii) a According to the outdoor ambient temperature TDry ballAnd outdoor environment wet bulb temperature TWet ballAnd searching in a preset humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH.
In a second aspect, an embodiment of the present invention further provides a heating control device for an air conditioner, which is applied to control of the air conditionerThe air conditioner also comprises a compressor, an indoor fan, an outdoor fan, an electronic expansion valve and a chassis electric heating belt which are in communication connection with the controller; the device includes: the parameter acquisition module is used for acquiring detection parameters of the air conditioner during heating operation; wherein, detecting the parameter includes: outdoor ambient temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipe(ii) a The analysis generation module is used for analyzing the relation between the detection parameters and the preset parameter threshold value and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively; and the control operation module is used for controlling the air conditioner to operate according to the control mode.
In a third aspect, an embodiment of the present invention further provides an air conditioner, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method in the first aspect when executing the computer program.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides an air conditioner heating control method, an air conditioner heating control device and an air conditionerDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipeThe detection parameters of (1); then, analyzing the relation between the detection parameters and the preset parameter threshold value, and generating a corresponding control mode according to the analysis result; and controlling the air conditioner to operate according to the control mode. In the mode, the outdoor environment temperature and the outdoor relative humidity are fully considered, the corresponding control mode is generated through the relation between the detection parameters and the preset parameter threshold value, and the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are accurately controlled respectively, so that the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the chassis deicing device has a good practical value.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a heating control method for an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a heating control device of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another air conditioner according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
To facilitate understanding of the present embodiment, a detailed description will be given below of a heating control method for an air conditioner according to an embodiment of the present invention. As shown in fig. 1, the air conditioner 1 includes an indoor unit 10 and an outdoor unit 20, wherein the indoor unit 10 includes a controller 11 and an indoor fan 12, and the outdoor unit 20 includes a compressor 21, an outdoor fan 22, an outdoor heat exchanger 23, an electronic expansion valve 24, and a chassis electric heating tape 25; the inner fan 12, the compressor 21, the outdoor fan 22, the outdoor heat exchanger 23, the electronic expansion valve 24 and the chassis electric heating belt 25 are all in communication connection with the controller 11, so that the controller 11 respectively and accurately controls the inner fan 12, the compressor 21, the outdoor fan 22, the outdoor heat exchanger 23, the electronic expansion valve 24 and the chassis electric heating belt 25 according to detection parameters and preset parameter thresholds during heating operation of the air conditioner, thereby reducing the possibility of frosting of the heat exchangers and improving the chassis deicing efficiency.
It should be noted that the indoor unit 10 and the outdoor unit 20 further include other structures, such as an indoor heat exchanger, an auxiliary electric heater, a gas-liquid separator, a four-way valve, and the like, and the connection relationship between the structures may refer to the existing air conditioner, and the embodiments of the present invention are not described in detail herein.
In practical application, the remote controller or the remote control device is in communication connection with the controller, and a user can control the air conditioner to be turned on or turned off through the remote controller or the remote control device, and can also set a temperature, an operation mode and the like, wherein the operation mode comprises a heating mode, a cooling mode, a dehumidification mode, a defrosting mode and the like, and the operation mode can be specifically set according to practical situations.
Based on the air conditioner, an embodiment of the present invention provides a heating control method for an air conditioner, where an execution main body is a controller, and as shown in fig. 2, the method includes the following steps:
step S202, acquiring detection parameters of the air conditioner during heating operation;
wherein, detecting the parameter includes: outdoor ambient temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipe(ii) a Specifically, the outdoor ambient temperature T is first acquiredDry ballTemperature T of coil pipe of heat exchangerCoil pipeAnd outdoor environment wet bulb temperature TWet ball(ii) a Then, according to the outdoor ambient temperature TDry ballAnd outdoor environment wet bulb temperature TWet ballLooking up in a preset humidity look-up table and using the looked-up humidity as the outdoor relative humidity RH, e.g. TDry ballAt 7 ℃ and TWet ballAt 6 deg.c, the outdoor relative humidity is 86.6% as found in the preset humidity table.
In order to obtain the above detection parameters, the air conditioner is further provided with a temperature sensing device, comprising: the outdoor environment dry bulb temperature sensing device, the outdoor environment wet bulb temperature sensing device and the heat exchanger coil temperature sensing device; wherein, the outdoor environment dry-bulb temperature sensing device is used for detecting the outdoor environment dry-bulb TDry ballNamely the outdoor environment temperature, the outdoor environment wet bulb temperature sensing device is used for detecting the outdoor environment wet bulb temperature TWet ballThe temperature sensing device of the heat exchanger coil is used for detecting the temperature T of the heat exchanger coilCoil pipe. In practical application, the temperature sensing device can be a resistance thermometer (such as a thermistor and a humidity sensor), and the resistance of the thermometer changes immediately according to the change of the outdoor environment temperature and the outdoor environment humidity so as to measure the outdoor environment temperature TDry ballOutdoor environment wet bulb temperature TWet ballAnd heat exchanger coil temperature TCoil pipe。
In addition, the rotation of the fan blade of the outdoor fan can generate negative pressure, outdoor air is sucked into an outdoor air cavity of the air conditioner immediately, the outdoor environment dry bulb temperature sensing device and the outdoor environment wet bulb temperature sensing device can be arranged at an air inlet of the outdoor unit, and when the outdoor air flows into the outdoor air cavity, the outdoor air flows through the two temperature sensing devices, so that the outdoor environment temperature T is detectedDry ballAnd outdoor environment wet bulb temperature TWet ball. And the temperature sensing device of the heat exchanger coil pipe temperature should be selected at the lowest position of the whole heat exchanger temperature, otherwise, the detected temperature T of the heat exchanger coil pipe is detected when the air conditioner is in heating operationCoil pipeNot the lowest temperature may cause the heat exchanger to be full of frost layer, but the air conditioner still does not enter the defrosting logic, thereby seriously affecting the service performance of the air conditioner and reducing the user experience.
Step S204, analyzing the relation between the detection parameters and preset parameter thresholds, and generating corresponding control modes according to the analysis results; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
specifically, in the normal heating mode, in order to reduce frosting of the outdoor heat exchanger and accelerate ice melting of the chassis, a common method includes: firstly, when the chassis is frozen, starting an electric heating belt of the chassis to melt ice; the running frequency of the compressor is reduced, the evaporation pressure of an air conditioning system is improved, and the surface temperature of the heat exchanger of the outdoor unit is improved, so that the frosting is reduced; the rotating speed of the indoor fan is reduced, the air supply quantity of the indoor unit is reduced, and the heat exchange quantity of the indoor unit is reduced, so that the evaporation temperature of the air conditioner is increased, and the frosting is reduced; fourthly, the rotating speed of the fan of the outdoor unit is increased, the air supply quantity of the outdoor unit is increased, the heat exchange quantity of the outdoor unit is increased, and the evaporation temperature of the air conditioner is increased so as to reduce frosting; properly increasing the opening of an outdoor machine throttling device (namely an electronic expansion valve) to improve the mass flow of a refrigerant, improve the evaporation pressure of an air conditioning system and improve the surface temperature of an outdoor machine heat exchanger to reduce frosting, so that in order to reduce frosting of the heat exchanger and rapid deicing of a chassis, a controller analyzes the relation between a detection parameter and a preset parameter threshold value and generates a corresponding control mode according to an analysis result; wherein, the control mode includes the chassis electrical heating area, the compressor, indoor fan, outdoor fan and the electronic expansion valve control action that corresponds respectively, promptly through carrying out accurate control action respectively to chassis electrical heating area, compressor, indoor fan, outdoor fan and electronic expansion valve, compare with only controlling single structure, through the joint accurate control of a plurality of structures, still further reduced the possibility that the heat exchanger frosted to the efficiency of chassis deicing has been improved.
Wherein the preset parameter threshold comprises a preset dry bulb temperature threshold, a preset relative humidity threshold and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, and the first relative humidity threshold is larger than the second relative humidity threshold, so that the detection parameters and the preset parameter threshold are analyzed to obtain various different analysis results, thereby generating different control modes.
This is illustrated here for ease of understanding. The preset dry bulb temperature threshold is 0 ℃, the first relative humidity threshold is 80%, the second relative humidity threshold is 50%, the first opening increment is 10 degrees, and the second opening increment is 5 degrees. Specifically, but not limited to, the following control modes are included:
(1) the preset coil temperature threshold comprises a first coil temperature threshold interval of [ -1 deg.C, 0 deg.C](ii) a In particular, if the outdoor ambient temperature TDry ballNot more than the preset dry bulb temperature threshold, and the outdoor relative humidity RH is not less than the first relative humidity threshold, namely when TDry ballWhen the temperature is less than or equal to 0 ℃ and the RH is more than or equal to 80 percent, generating a first control mode; wherein the first control mode comprises performing the following actions: firstly, turning on an electric heating belt of a chassis without turning off the electric heating belt to prevent the chassis from being frozen and prevent a heat exchanger from frosting; reducing the frequency of the compressor to 75% of the current running frequency; if the current running frequency of the 1.5P air conditioner is 90Hz, reducing the current running frequency to 67.5 Hz; reducing the rotating speed of the indoor fan to 75% of the current rotating speed; if the current running speed of the 1.5P air conditioner is 1300r/min, the speed is reduced to 975 r/min; fourthly, the rotating speed of the outdoor fan is increased to the highest rotating speed; for example, the air conditioner is about 1100r/min under 1.5P; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAdjusting the opening degree of the electronic expansion valve within a first coil temperature threshold interval; wherein, the first coil temperature threshold interval comprises a first coil temperature threshold of 0 ℃ and a second coil temperature threshold of-1 ℃: if the temperature T of the coil of the heat exchangerCoil pipeGreater than the first coil temperature threshold, i.e. TCoil pipeWhen the temperature is higher than 0 ℃, adjusting the opening degree of the electronic expansion valve according to a preset interval and a first opening degree increment, and increasing 10 degrees every 1min if the temperature is higher than 0 ℃; if the temperature T of the coil of the heat exchangerCoil pipeIs not more than the temperature threshold of the first coil and is more than the temperature threshold of the second coil, namely, T is less than-1 DEG CCoil pipeThe opening degree of the electronic expansion valve is adjusted and controlled according to a preset interval and a second opening degree increment, and if the opening degree is increased by 5 degrees every 1min, the opening degree is controlled; if the temperature T of the coil of the heat exchangerCoil pipeNot greater than a second coil temperature threshold, TCoil pipeAnd controlling the electronic expansion valve to keep the current opening degree at the temperature of less than or equal to-1 ℃.
(2) The preset coil temperature threshold comprises a second coil temperature threshold interval of [1 ℃, 2℃ ]](ii) a Specifically, the method comprises the following steps: if the outdoor ambient temperature TDry ballNot more than the preset dry bulb temperature threshold value, and the outdoor relative humidity RH is less than the first relative humidityA threshold value, and is not less than a second relative humidity threshold value, i.e. when TDry ballWhen the temperature is less than or equal to 0 ℃ and the RH is less than or equal to 50% and less than 80%, generating a second control mode; wherein the second control mode comprises performing the following actions: firstly, starting an electric heating belt of a chassis, and closing the electric heating belt for a specified time after the electric heating belt runs for a first time; for example, the operation is closed for 5min after 60min, so that the chassis is prevented from being frozen, and the heat exchanger is aggravated to frost; meanwhile, the long-time running of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; reducing the frequency of the compressor to 80% of the current operating frequency; if the current running frequency of the 1.5P air conditioner is 90Hz, reducing the current running frequency to 72 Hz; reducing the rotating speed of the indoor fan to 80% of the current rotating speed; if the current running rotating speed of the 1.5P air conditioner is 1300r/min, the rotating speed is reduced to 1040 r/min; fourthly, the rotating speed of the outdoor fan is improved to 95 percent of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the air conditioner is adjusted to 1045 r/min; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAdjusting the opening degree of the electronic expansion valve within a second coil temperature threshold interval; reference may be made in particular to the procedure for adjusting the temperature threshold interval of the first coil, for example if TCoil pipeIf the temperature is higher than 2 ℃, the temperature is increased by 10 degrees every 1 min; if 1 ℃ is < TCoil pipeIncreasing the temperature by 5 degrees every 1min at the temperature of less than or equal to 2 ℃; if T isCoil pipeAnd controlling the electronic expansion valve to keep the current opening degree when the temperature is less than or equal to 1 ℃.
(3) The preset coil temperature threshold comprises a third coil temperature threshold interval of 3 ℃, 4 DEG C](ii) a Specifically, the method comprises the following steps: if the outdoor ambient temperature TDry ballNot greater than the preset dry bulb temperature threshold, and the outdoor relative humidity RH is less than the second relative humidity threshold, namely when TDry ballWhen the temperature is less than or equal to 0 ℃ and the RH is less than 50 percent, a third control mode is generated; wherein the third control mode includes performing the following actions: firstly, starting an electric heating belt of a chassis, and closing the electric heating belt for a specified time after running for a second time; if the operation is stopped for 5min after 50min, the chassis is prevented from being frozen, and the heat exchanger is aggravated to frost; meanwhile, the long-time running of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; reducing the frequency of the compressor to 85% of the current running frequency; if the current running frequency of the 1.5P air conditioner is 90Hz, reducing the current running frequency to 76.5 Hz; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the current running speed of the air conditioner is 13 as 1.5PWhen the speed is 00r/min, the speed is reduced to 1105 r/min; fourthly, the rotating speed of the outdoor fan is improved to 90 percent of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the air conditioner is adjusted to 990 r/min; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd a third coil temperature threshold interval, and adjusting the opening degree of the electronic expansion valve; i.e. if TCoil pipeIf the temperature is higher than 4 ℃, the temperature is increased by 10 degrees every 1 min; if 3 ℃ is < TCoil pipeIncreasing the temperature by 5 degrees every 1min at the temperature of less than or equal to 4 ℃; if T isCoil pipeAnd controlling the electronic expansion valve to keep the current opening degree at the temperature of less than or equal to 3 ℃.
(4) The preset coil temperature threshold comprises a fourth coil temperature threshold interval of 5 ℃, 6 DEG C](ii) a Specifically, the method comprises the following steps: if the outdoor ambient temperature TDry ballGreater than the preset dry bulb temperature threshold, and the outdoor relative humidity RH is not less than the first relative humidity threshold, namely when TDry ballWhen the temperature is higher than 0 ℃ and the RH is more than or equal to 80 percent, a fourth control mode is generated; wherein the fourth control mode comprises performing the following actions: firstly, starting an electric heating belt of a chassis, and closing the electric heating belt for a specified time after running for a third time; if the operation is stopped for 5min after 40min, the chassis is prevented from being frozen, and the heat exchanger is aggravated to frost; meanwhile, the long-time running of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; reducing the frequency of the compressor to 90% of the current operating frequency, and reducing the frequency to 81Hz if the current operating frequency of the 1.5P air conditioner is 90 Hz; thirdly, reducing the rotating speed of the indoor fan to 90% of the current rotating speed, and reducing the rotating speed to 1170r/min if the current operating rotating speed of the 1.5P air conditioner is 1300 r/min; fourthly, the rotating speed of the outdoor fan is improved to 85 percent of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the air conditioner is adjusted to 935 r/min; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd a fourth coil temperature threshold interval, and adjusting the opening degree of the electronic expansion valve; i.e. if TCoil pipeIf the temperature is higher than 6 ℃, the temperature is increased by 10 degrees every 1 min; if 5 ℃ is < TCoil pipeThe temperature is less than or equal to 6 ℃, and the temperature is increased by 5 degrees every 1 min; if T isCoil pipeAnd controlling the electronic expansion valve to keep the current opening degree when the temperature is less than or equal to 5 ℃.
(5) The preset coil temperature threshold comprises a fifth coil temperature threshold interval (7 ℃, 8℃)](ii) a Specifically, the method comprises the following steps: if the outdoor ambient temperature TDry ballGreater than the preset dry bulb temperature threshold, and the outdoor relative humidity RH is less than the first relative humidity threshold, and is not smallAt a second relative humidity threshold, i.e. when TDry ballWhen the temperature is higher than 0 ℃ and RH is more than or equal to 50% and less than 80%, a fifth control mode is generated; wherein the fifth control mode comprises performing the following actions: firstly, starting an electric heating belt of the chassis, and closing the electric heating belt for a specified time after running for the fourth time; if the operation is stopped for 5min after 30min, the chassis is prevented from being frozen, and the heat exchanger is aggravated to frost; meanwhile, the long-time running of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; reducing the frequency of the compressor to 95% of the current operating frequency, and reducing the current operating frequency of the 1.5P air conditioner to 85.5Hz if the current operating frequency is 90 Hz; thirdly, reducing the rotating speed of the indoor fan to 95% of the current rotating speed, and reducing the rotating speed to 1235r/min if the current operating rotating speed of the 1.5P air conditioner is 1300 r/min; fourthly, the rotating speed of the outdoor fan is improved to 80 percent of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the air conditioner is adjusted to 880 r/min; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAdjusting the opening degree of the electronic expansion valve within a temperature threshold interval of a fifth coil; i.e. if TCoil pipeIf the temperature is higher than 8 ℃, 10 degrees are increased every 1 min; if 7 ℃ is less than TCoil pipeIncreasing the temperature by 5 degrees every 1min when the temperature is less than or equal to 8 ℃; if T isCoil pipeAnd controlling the electronic expansion valve to keep the current opening degree when the temperature is less than or equal to 7 ℃.
(6) The preset coil temperature threshold comprises a sixth coil temperature threshold interval of 9 ℃, 10 DEG C](ii) a Specifically, the method comprises the following steps: if the outdoor ambient temperature TDry ballGreater than a predetermined dry bulb temperature threshold, and an outdoor relative humidity RH less than a second relative humidity threshold, i.e. when TDry ballWhen the temperature is higher than 0 ℃ and the RH is less than 50 percent, a sixth control mode is generated; wherein the sixth control mode comprises performing the following actions: firstly, in a normal heating mode, the chassis electric heating belt is not started, so that the long-time running of the chassis electric heating belt is avoided, and the service life of the chassis electric heating belt is shortened; secondly, controlling the frequency of the compressor to be kept at the current operating frequency, and if the current operating frequency of the 1.5P air conditioner is 90Hz, continuously keeping the 90Hz operation; thirdly, controlling the rotating speed of the indoor fan to be kept at the current rotating speed, and if the current operating rotating speed of the 1.5P air conditioner is 1300r/min, keeping 1300r/min to operate; fourthly, controlling the rotating speed of the outdoor fan to be kept at the current rotating speed; controlling the opening of the electronic expansion valve to be kept at the current opening.
In conclusion, in the normal heating mode of the air conditioner, according to the analysis result of the detection parameter and the preset parameter threshold, the corresponding control mode is determined, so that the accurate control of the opening/closing of the chassis electric heating belt, the running frequency of the compressor, the rotating speed of the indoor fan, the rotating speed of the outdoor fan, the opening degree of the electronic expansion valve and the like is realized according to the control mode; and in each control mode, the controller simultaneously controls the compressor, the indoor fan, the outdoor fan and the electronic expansion valve of the chassis electric heating belt according to the corresponding execution action, thereby achieving the purposes of reducing the frosting of the heat exchanger and quickly deicing the chassis.
And step S206, controlling the air conditioner to operate according to the control mode.
According to the air conditioner heating control method provided by the embodiment of the invention, the outdoor environment temperature and the outdoor relative humidity are fully considered, and the corresponding control modes are generated through the relation between the detection parameters and the preset parameter threshold value so as to accurately control the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively, so that the probability of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the practical value is better.
Further, when the outdoor unit of the air conditioner is full of frost layers, the heat exchange capacity of the outdoor unit of the air conditioner is greatly reduced, and the comfort of users is affected. In this case, defrosting mode, which is defrosting control of outdoor unit frost layer, is required. After the air conditioner enters a defrosting mode, the frost layer can be melted into water and discharged through a chassis drain hole, but if the chassis drain hole is blocked by an ice layer at the moment, the water cannot be discharged and is stored on the chassis all the time, so that the heat exchanger is aggravated to frost more quickly, and the heating capacity of the air conditioner is directly influenced.
Thus, when the heat exchanger coil temperature T is detectedCoil pipeWhen the temperature is too low, the air conditioner enters a defrosting mode when the requirement of the air conditioner for entering defrosting is met. In the defrosting process, the electric heating belt of the chassis is also accurately controlled. Specifically, the method further comprises: acquiring detection parameters of the air conditioner during defrosting operation; analyzing the relation between the detection parameters and preset parameter thresholds during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result; according to electricity plusThe heat control mode controls the running of the chassis electric heating belt until defrosting is finished.
This is illustrated here for ease of understanding. The preset dry bulb temperature threshold is 0 ℃, the first relative humidity threshold is 80%, the second relative humidity threshold is 50%, and the electric heating control mode specifically includes, but is not limited to, the following modes:
(1) when T isDry ballWhen the temperature is less than or equal to 0 ℃ and the RH is more than or equal to 80 percent, the electric heating control mode specifically comprises the following steps: the chassis electric heating belt is started during defrosting, and after defrosting is finished, the chassis electric heating belt continues to run for 6min to ensure that an ice layer of the chassis is completely melted;
(2) when T isDry ballWhen the temperature is less than or equal to 0 ℃ and the RH is less than or equal to 50% and less than 80%, the electric heating control mode specifically comprises the following steps: the chassis electric heating belt is started during defrosting, and after defrosting is finished, the chassis electric heating belt continues to run for 5min to ensure that an ice layer of the chassis is completely melted;
(3) when T isDry ballWhen the temperature is less than or equal to 0 ℃ and the RH is less than 50 percent, the electric heating control mode specifically comprises the following steps: the chassis electric heating belt is started during defrosting, and after defrosting is finished, the chassis electric heating belt continues to run for 4min to ensure that an ice layer of the chassis is completely melted;
(4) when T isDry ballWhen the temperature is more than 0 ℃ and the RH is more than or equal to 80 percent, the electric heating control mode specifically comprises the following steps: the chassis electric heating belt is started during defrosting, and after defrosting is finished, the chassis electric heating belt continues to run for 3min to ensure that an ice layer of the chassis is completely melted;
(5) when T isDry ballWhen the temperature is more than 0 ℃ and RH is more than or equal to 50% and less than 80%, the electric heating control mode specifically comprises the following steps: the chassis electric heating belt is started during defrosting, and after defrosting is finished, the chassis electric heating belt continues to run for 2min to ensure that an ice layer of the chassis is completely melted;
(6) when T isDry ballWhen the temperature is more than 0 ℃ and the RH is less than 50%, the electric heating control mode specifically comprises the following steps: and during defrosting, the chassis electric heating belt is started, and after defrosting is finished, the chassis electric heating belt continues to run for 1min to ensure that the ice layer of the chassis is completely melted.
Therefore, in the defrosting mode, the relation between the detection parameters and the preset parameter threshold value during defrosting operation is analyzed, and the corresponding electric heating control mode is generated according to the analysis result, so that the operation of the chassis electric heating belt is accurately controlled according to the electric heating control mode, the chassis deicing efficiency is improved, and the possibility of frosting of the heat exchanger is reduced.
It should be noted that, after the above electrical heating control modes are ended, the controller executes a control mode generation process, that is, after the ice layer on the chassis is completely melted, the controller analyzes the relationship between the detection parameter and the preset parameter threshold, generates a corresponding control mode according to the analysis result, and accurately controls the electrical heating belt of the chassis, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve according to the control mode.
In summary, the heating control method of the air conditioner provided by the embodiment of the invention is based on the outdoor environment temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipeThe air conditioner has the advantages that the accurate control over the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve is realized, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, the use comfort of the air conditioner and the operation reliability of the chassis electric heating belt are improved, and therefore the experience degree of a user is improved.
Corresponding to the above method embodiment, an embodiment of the present invention further provides an air conditioner heating control apparatus, which is applied to a controller of an air conditioner, and as shown in fig. 3, the apparatus includes: a parameter acquisition module 31, an analysis generation module 32 and a control operation module 33; the functions of each module are as follows:
a parameter obtaining module 31, configured to obtain a detection parameter when the air conditioner is in heating operation; wherein, detecting the parameter includes: outdoor ambient temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipe；
The analysis generation module 32 is used for analyzing the relation between the detection parameters and the preset parameter threshold value and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
and the control operation module 33 is used for controlling the air conditioner to operate according to the control mode.
The air conditioner heating control device provided by the embodiment of the invention fully considers the outdoor environment temperature and the outdoor relative humidity, generates the corresponding control mode through the relation between the detection parameter and the preset parameter threshold value, and respectively and accurately controls the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve, thereby reducing the possibility of frosting of the heat exchanger, improving the chassis deicing efficiency and having better practical value.
In one possible implementation, the preset parameter threshold includes a preset dry bulb temperature threshold, a preset relative humidity threshold, and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold interval; the analysis generating module 32 is further configured to: if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold and the outdoor relative humidity RH is not less than the first relative humidity threshold, generating a first control mode; wherein the first control mode comprises performing the following actions: starting an electric heating belt of the chassis; reducing the frequency of the compressor to 75% of the current operating frequency; reducing the rotating speed of the indoor fan to 75% of the current rotating speed; increasing the rotating speed of the outdoor fan to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd adjusting the opening degree of the electronic expansion valve within the first coil temperature threshold interval.
In another possible embodiment, the preset coil temperature threshold comprises a second coil temperature threshold interval; the analysis generating module 32 is further configured to: if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold, the outdoor relative humidity RH is less than the first relative humidity threshold and is not less than the second relative humidity threshold, generating a second control mode; wherein the second control mode comprises performing the following actions: starting an electric heating belt of the chassis, and closing the electric heating belt for a specified time after the electric heating belt runs for the first time; reducing the frequency of the compressor to 80% of the current operating frequency; reducing the rotating speed of the indoor fan to 80% of the current rotating speed; the rotating speed of the outdoor fan is increased to 9 of the highest rotating speed5 percent; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd the temperature threshold interval of the second coil pipe, and the opening degree of the electronic expansion valve is adjusted.
In another possible embodiment, the preset coil temperature threshold comprises a third coil temperature threshold interval; the analysis generating module 32 is further configured to: if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold and the outdoor relative humidity RH is less than the second relative humidity threshold, generating a third control mode; wherein the third control mode includes performing the following actions: starting the chassis electric heating belt, and closing the specified time after running for the second time; reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the rotating speed of the outdoor fan is increased to 90% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd a third coil temperature threshold interval, and adjusting the opening degree of the electronic expansion valve.
In another possible embodiment, the first coil temperature threshold interval includes a first coil temperature threshold and a second coil temperature threshold, and the first coil temperature threshold is greater than the second coil temperature threshold; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd a first coil temperature threshold interval, adjusting the opening degree of the electronic expansion valve, comprising: if the temperature T of the coil of the heat exchangerCoil pipeIf the temperature is larger than the first coil temperature threshold value, adjusting the opening degree of the electronic expansion valve according to a preset interval and a first opening degree increment; if the temperature T of the coil of the heat exchangerCoil pipeThe opening degree of the electronic expansion valve is adjusted and controlled according to a preset interval and a second opening degree increment when the temperature is not more than the temperature threshold of the first coil pipe and is more than the temperature threshold of the second coil pipe; if the temperature T of the coil of the heat exchangerCoil pipeThe temperature of the electronic expansion valve is not greater than the temperature threshold of the second coil pipe, and the electronic expansion valve is controlled to keep the current opening; wherein the first opening degree increment is greater than the second opening degree increment.
In another possible embodiment, the first opening degree increment is 10 degrees and the second opening degree increment is 5 degrees.
In another possible embodiment, the apparatus further comprises: acquiring detection parameters of the air conditioner during defrosting operation; analyzing the relation between the detection parameters and preset parameter thresholds during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result; and controlling the operation of the chassis electric heating belt according to the electric heating control mode until defrosting is finished.
In another possible implementation, the parameter obtaining module 31 is further configured to: obtaining outdoor ambient temperature TDry ballTemperature T of coil pipe of heat exchangerCoil pipeAnd outdoor environment wet bulb temperature TWet ball(ii) a According to the outdoor ambient temperature TDry ballAnd outdoor environment wet bulb temperature TWet ballAnd searching in a preset humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH.
The air conditioner heating control device provided by the embodiment of the invention has the same technical characteristics as the air conditioner heating control method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the invention also provides an air conditioner, which comprises a processor and a memory, wherein the memory stores machine executable instructions capable of being executed by the processor, and the processor executes the machine executable instructions to realize the heating control method of the air conditioner.
Referring to fig. 4, the air conditioner includes a processor 40 and a memory 41, the memory 41 stores machine executable instructions capable of being executed by the processor 40, and the processor 40 executes the machine executable instructions to implement the air conditioner heating control method.
Further, the air conditioner shown in fig. 4 further includes a bus 42 and a communication interface 43, and the processor 40, the communication interface 43 and the memory 41 are connected through the bus 42.
The Memory 41 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 43 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, etc. may be used. The bus 42 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, an EISA (Enhanced Industry Standard Architecture) bus, or the like. The above-mentioned bus may be classified into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one double-headed arrow is shown in FIG. 4, but that does not indicate only one bus or one type of bus.
The processor 40 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 40. The Processor 40 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 41, and the processor 40 reads the information in the memory 41 and completes the steps of the method of the foregoing embodiment in combination with the hardware thereof.
The present embodiments also provide a machine-readable storage medium storing machine-executable instructions that, when invoked and executed by a processor, cause the processor to implement the air conditioner heating control method described above.
The air conditioner heating control method and device and the computer program product of the air conditioner provided by the embodiment of the invention comprise a computer readable storage medium storing program codes, wherein instructions included in the program codes can be used for executing the method described in the previous method embodiment, and specific implementation can refer to the method embodiment, and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The heating control method of the air conditioner is characterized in that the heating control method is applied to a controller of the air conditioner, and the air conditioner further comprises a compressor, an indoor fan, an outdoor fan, an electronic expansion valve and a chassis electric heating belt which are in communication connection with the controller; the method comprises the following steps:
acquiring detection parameters of the air conditioner during heating operation; wherein the detection parameters include: outdoor ambient temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipe；
Analyzing the relation between the detection parameters and preset parameter thresholds, and generating corresponding control modes according to analysis results; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
and controlling the air conditioner to operate according to the control mode.
2. The method of claim 1, wherein the preset parameter thresholds comprise a preset dry bulb temperature threshold, a preset relative humidity threshold, and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold interval;
the step of analyzing the relationship between the detection parameters and the preset parameter threshold and generating the corresponding control mode according to the analysis result comprises the following steps:
if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold and the outdoor relative humidity RH is not less than the first relative humidity threshold, generating a first control mode; wherein the first control mode comprises performing the following actions: starting the chassis electric heating belt; reducing the frequency of the compressor to 75% of the current operating frequency; reducing the rotating speed of the indoor fan to 75% of the current rotating speed; increasing the rotating speed of the outdoor fan to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd adjusting the opening degree of the electronic expansion valve within the first coil temperature threshold interval.
3. The method of claim 2, wherein the preset coil temperature threshold comprises a second coil temperature threshold interval; the step of analyzing the relationship between the detection parameters and the preset parameter threshold and generating the corresponding control mode according to the analysis result further comprises:
if the outdoor environment temperature is highDegree TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold, the outdoor relative humidity RH is less than the first relative humidity threshold, and the outdoor relative humidity RH is not less than the second relative humidity threshold, generating a second control mode; wherein the second control mode comprises performing the following actions: starting the chassis electric heating belt, and closing the chassis electric heating belt for a specified time after the chassis electric heating belt runs for the first time; reducing the frequency of the compressor to 80% of the current operating frequency; reducing the rotating speed of the indoor fan to 80% of the current rotating speed; increasing the rotating speed of the outdoor fan to 95% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd the temperature threshold interval of the second coil pipe is used for adjusting the opening degree of the electronic expansion valve.
4. The method of claim 2, wherein the preset coil temperature threshold comprises a third coil temperature threshold interval; the step of analyzing the relationship between the detection parameters and the preset parameter threshold and generating the corresponding control mode according to the analysis result further comprises:
if the outdoor ambient temperature TDry ballIf the temperature is not greater than the preset dry bulb temperature threshold and the outdoor relative humidity RH is less than the second relative humidity threshold, generating a third control mode; wherein the third control mode comprises performing the following actions: starting the chassis electric heating belt, and closing the specified time after running for the second time; reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; increasing the rotating speed of the outdoor fan to 90% of the maximum rotating speed; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd the temperature threshold interval of the third coil pipe is used for adjusting the opening degree of the electronic expansion valve.
5. The method of claim 2, wherein the first coil temperature threshold interval comprises a first coil temperature threshold and a second coil temperature threshold, and wherein the first coil temperature threshold is greater than the second coil temperature threshold; according to the temperature T of the coil pipe of the heat exchangerCoil pipeAnd the first coil temperature threshold interval, and adjusting the opening degree of the electronic expansion valve, wherein the step comprises the following steps:
if the temperature T of the heat exchanger coilCoil pipeThe opening degree of the electronic expansion valve is adjusted according to a preset interval and a first opening degree increment when the temperature of the first coil is larger than the temperature threshold value of the first coil; if the temperature T of the heat exchanger coilCoil pipeThe opening degree of the electronic expansion valve is adjusted and controlled according to the preset interval and a second opening degree increment when the temperature of the first coil pipe is not greater than the temperature threshold of the first coil pipe and is greater than the temperature threshold of the second coil pipe; if the temperature T of the heat exchanger coilCoil pipeThe temperature of the electronic expansion valve is not greater than the temperature threshold of the second coil pipe, and the electronic expansion valve is controlled to keep the current opening; wherein the first opening degree increment is greater than the second opening degree increment.
6. The method of claim 5, wherein the first opening degree increment is 10 degrees and the second opening degree increment is 5 degrees.
7. The method of claim 1, further comprising:
acquiring detection parameters of the air conditioner during defrosting operation;
analyzing the relation between the detection parameters and preset parameter thresholds during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result;
and controlling the chassis electric heating belt to operate according to the electric heating control mode until defrosting is finished.
8. The method as claimed in claim 1, wherein the step of obtaining the detection parameter during the heating operation of the air conditioner comprises:
obtaining the outdoor ambient temperature TDry ballTemperature T of coil pipe of heat exchangerCoil pipeAnd outdoor environment wet bulb temperature TWet ball；
According to the outdoor ambient temperature TDry ballAnd the outdoor environment wet bulb temperature TWet ballIn the preset stateAnd searching in a humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH.
9. The heating control device of the air conditioner is characterized by being applied to a controller of the air conditioner, and the air conditioner also comprises a compressor, an indoor fan, an outdoor fan, an electronic expansion valve and a chassis electric heating belt which are in communication connection with the controller; the device comprises:
the parameter acquisition module is used for acquiring detection parameters of the air conditioner during heating operation; wherein the detection parameters include: outdoor ambient temperature TDry ballOutdoor relative humidity RH and heat exchanger coil temperature TCoil pipe；
The analysis generation module is used for analyzing the relation between the detection parameters and preset parameter thresholds and generating corresponding control modes according to analysis results; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
and the control operation module is used for controlling the air conditioner to operate according to the control mode.
10. An air conditioner comprising a memory, a processor and a computer program stored on said memory and executable on said processor, wherein said processor when executing said computer program performs the steps of the method of any of claims 1 to 8.
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CN115807995A (en) * 2022-12-08 2023-03-17 珠海格力电器股份有限公司 Air conditioner heating control method, device, equipment and storage medium

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