CN104879881B - A kind of control method of air-conditioner with fixed frequency, controller and air-conditioner with fixed frequency - Google Patents
A kind of control method of air-conditioner with fixed frequency, controller and air-conditioner with fixed frequency Download PDFInfo
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- CN104879881B CN104879881B CN201510214564.XA CN201510214564A CN104879881B CN 104879881 B CN104879881 B CN 104879881B CN 201510214564 A CN201510214564 A CN 201510214564A CN 104879881 B CN104879881 B CN 104879881B
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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
- F24F11/62—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
- 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
- F24F11/70—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
-
- 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
- F24F11/70—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
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- 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 provides a kind of control method of air-conditioner with fixed frequency, controller and air-conditioner with fixed frequency, methods described includes：Obtain current indoor temperature value and current outdoor temperature value；The current indoor temperature value and the set temperature value of air-conditioner with fixed frequency are compared；When the current indoor temperature value is less than or equal to the set temperature value, the cold medium flux of the air-conditioner with fixed frequency is adjusted by electric expansion valve according to the current outdoor temperature value and the set temperature value；The electric expansion valve is the electric expansion valve for adjusting cold medium flux being directly compressed in the connecting tube of machine return-air at the compressor two ends for being arranged on the air-conditioner with fixed frequency.The present invention can avoid frequently shutting down the influence to the fluctuation of room temperature and to the compressor life-span up to temperature, realize automatically controlling for fixed frequency air conditioner energy-conservation comfortable function.
Description
Technical field
The present invention relates to air conditioner controlling technology field, more particularly to a kind of control method of air-conditioner with fixed frequency, controller and
Air-conditioner with fixed frequency.
Background technology
The mode of almost all of air-conditioner with fixed frequency control temperature is shut down up to temperature in the market, i.e. indoor environment temperature
Reach remote control setting temperature space-time and mediate machine.
But, frequently being shut down up to temperature can be very big to the fluctuation of indoor environment temperature and the discontinuity of air-conditioner sound
The comfortableness in room is reduced, on the other hand, frequently energy saving can not be effectively realized up to temperature shutdown, but also can be to pressure
The contracting machine life-span makes a big impact.
Therefore, how the controlling party of a kind of energy stability contorting room temperature and the fixed frequency air conditioner without frequent shutdown is provided
Method, controller and air-conditioner with fixed frequency are significant.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide one kind overcome above mentioned problem or at least in part solve or
Person slows down control method, controller and the air-conditioner with fixed frequency of the air-conditioner with fixed frequency of above mentioned problem.
According to an aspect of the invention, there is provided a kind of control method of air-conditioner with fixed frequency, methods described includes：
Obtain current indoor temperature value and current outdoor temperature value；
The current indoor temperature value and the set temperature value of air-conditioner with fixed frequency are compared；
When the current indoor temperature value is less than or equal to the set temperature value, according to the current outdoor temperature value
With the cold medium flux that the set temperature value adjusts the air-conditioner with fixed frequency by electric expansion valve；
The electric expansion valve be arranged on the air-conditioner with fixed frequency compressor two ends for being directly compressed machine return-air
Connecting tube on.
Optionally, it is described that institute is adjusted by electric expansion valve according to the current outdoor temperature value and the set temperature value
The cold medium flux of air-conditioner with fixed frequency is stated, including：
The aperture of the electric expansion valve is adjusted according to the current outdoor temperature value and the set temperature value, realizes adjusting
The cold medium flux of the whole air-conditioner with fixed frequency.
Optionally, it is described that opening for electric expansion valve is adjusted according to the current outdoor temperature value and the set temperature value
Degree, including：
According to the refrigeration relation table for pre-building, it is determined that the corresponding refrigeration energy of set temperature value of current air-conditioner with fixed frequency
Power, using the refrigerating capacity as the air-conditioner with fixed frequency the first refrigerating capacity；The refrigeration relation table is multiple design temperatures
The corresponding relation of value and refrigerating capacity；
According to first refrigerating capacity, the outdoor temp angle value pass corresponding with electronic expansion valve opening that selection pre-builds
It is table；Multiple outdoor temp angle value that are stored with the mapping table and the corresponding electronic expansion valve opening of each outdoor temp angle value；
The current outdoor temperature value Tx is matched with the mapping table；
If the mapping table includes：T1、T2、T3, and corresponding electronic expansion valve opening is Lx (T1)、Lx
(T2)、Lx(T3), wherein, T1>T2>T3；
Then, Tx >=T1, it is Lx=Lx (T to adjust the electronic expansion valve opening1)；
T1 ＞ Tx >=T2, it is Lx=(Lx (T to adjust the electronic expansion valve opening2)-Lx(T1))*(T1-Tx)/10+Lx
(T1)；
T2＞ Tx >=T3, adjustment electronic expansion valve opening is Lx=(Lx (T3)-Lx(T2))*(T2-Tx)/10+Lx(T2)；
Tx<T3, adjustment electronic expansion valve opening is Lx=Lx (T3)。
Optionally, it is described acquisition current indoor temperature value and current outdoor temperature value before, methods described also includes：
The set temperature value of air-conditioner with fixed frequency and the refrigeration relation table of the refrigerating capacity of the air-conditioner with fixed frequency are set up,
And/or,
Set up the mapping table of multiple outdoor temp angle value and electronic expansion valve opening.
According to another aspect of the present invention, there is provided a kind of controller of air-conditioner with fixed frequency, the controller includes：
Acquiring unit, for obtaining current indoor temperature value and current outdoor temperature value；
Comparing unit, for the current indoor temperature value and the design temperature of air-conditioner with fixed frequency that obtain the acquiring unit
Value is compared；
Control unit, for the comparative result in the comparing unit for current indoor temperature value sets less than or equal to described
During constant temperature angle value, the fixed frequency is adjusted by electric expansion valve according to the current outdoor temperature value and the set temperature value empty
Adjust the cold medium flux of device；
The electric expansion valve be arranged on the air-conditioner with fixed frequency compressor two ends for being directly compressed machine return-air
Connecting tube on.
Optionally, described control unit, for according to the current outdoor temperature value and set temperature value adjustment institute
The aperture of electric expansion valve is stated, the cold medium flux of the adjustment air-conditioner with fixed frequency is realized.
Optionally, described control unit includes：
Refrigerating capacity regulator unit, for according to the refrigeration relation table that pre-builds, it is determined that current air-conditioner with fixed frequency
The corresponding refrigerating capacity of set temperature value, using the refrigerating capacity as the air-conditioner with fixed frequency the first refrigerating capacity；The system
Cold relation table is the corresponding relation of multiple set temperature values and refrigerating capacity；
Selection subelement, for according to first refrigerating capacity, the outdoor temp angle value that selection pre-builds to be swollen with electronics
The mapping table of swollen valve opening；Multiple outdoor temp angle value that are stored with the mapping table and each outdoor temp angle value are corresponding
Electronic expansion valve opening；
Coupling subelement, for the current outdoor temperature value Tx to be matched with the mapping table；
Control subelement, if including for the mapping table：T1、T2、T3, and corresponding electric expansion valve opens
It is Lx (T to spend1)、Lx(T2)、Lx(T3), wherein, T1>T2>T3；
Then, Tx >=T1, it is Lx=Lx (T to adjust the electronic expansion valve opening1)；
T1＞ Tx >=T2, it is Lx=(Lx (T to adjust the electronic expansion valve opening2)-Lx(T1))*(T1-Tx)/10+Lx
(T1)；
T2＞ Tx >=T3, adjustment electronic expansion valve opening is Lx=(Lx (T3)-Lx(T2))*(T2-Tx)/10+Lx(T2)；
Tx<T3, adjustment electronic expansion valve opening is Lx=Lx (T3)。
Optionally, the controller also includes：
Refrigeration relation table sets up unit, for acquiring unit obtain current indoor temperature value and current outdoor temperature value it
Before, the set temperature value of air-conditioner with fixed frequency and the refrigeration relation table of the refrigerating capacity of the air-conditioner with fixed frequency are set up,
And/or,
Mapping table sets up unit, for acquiring unit obtain current indoor temperature value and current outdoor temperature value it
Before, set up the mapping table of multiple outdoor temp angle value and electronic expansion valve opening.
According to a further aspect of the invention, there is provided a kind of air-conditioner with fixed frequency, including：
Temperature sensor, compressor, the connection for being directly compressed machine return-air set at the compressor two ends
The electric expansion valve and any of the above-described described controller manage, being arranged in the connecting tube；
The temperature sensor detects current indoor temperature value and current outdoor temperature value, the current indoor temperature that will be detected
Value and current outdoor temperature value are sent to the controller；
The controller obtains the current indoor temperature value and current outdoor temperature value, judges the current indoor temperature
When value is less than or equal to default set temperature value, according to the current outdoor temperature value and set temperature value adjustment
The aperture of electric expansion valve, realizes the cold medium flux in the control compressor.
Optionally, the temperature sensor is regular or is periodically detected Indoor Temperature angle value and outdoor temp angle value, by what is detected
Newest Indoor Temperature angle value and outdoor temp angle value is sent to the control as current indoor temperature value and current outdoor temperature value
Device.
Beneficial effects of the present invention are：
The control method of air-conditioner with fixed frequency, controller and air-conditioner with fixed frequency that the present invention is provided, in the pressure of air-conditioner with fixed frequency
What contracting machine two ends were set is directly compressed the connecting tube of machine return-air, the electric expansion valve being arranged in the connecting tube, passes through
Control the aperture of the electric expansion valve to control the cold medium flux of the compressor, so can avoid frequently being shut down up to temperature it is right
The fluctuation of room temperature and the influence to the compressor life-span, realize automatically controlling for fixed frequency air conditioner energy-conservation comfortable function.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the control method of air-conditioner with fixed frequency that the embodiment of the present invention is proposed；
Fig. 2 is a kind of structured flowchart of the controller of air-conditioner with fixed frequency that the embodiment of the present invention is proposed；
Fig. 3 is a kind of fundamental diagram of air-conditioner with fixed frequency that the embodiment of the present invention is proposed.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " " used herein, " one
It is individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that what is used in specification of the invention arranges
Diction " including " refer to the presence of the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their group.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology), with art of the present invention in those of ordinary skill general understanding identical meaning.Should also
Understand, those terms defined in such as general dictionary, it should be understood that with the context with prior art
The consistent meaning of meaning, and unless by specific definitions, will not otherwise be explained with idealization or excessively formal implication.
The present invention is directly compressed the connecting tube of machine return-air by being set at the compressor two ends of the air-conditioner with fixed frequency,
And electric expansion valve is set in the connecting tube, cold medium flux is controlled by controlling the aperture of the electric expansion valve, and then
Can avoid frequently shutting down the influence to the fluctuation of room temperature and to the compressor life-span up to temperature, realize fixed frequency air conditioner energy-conservation
Comfortable function is automatically controlled so as to realize the comfortable function of fixed frequency air conditioner energy-conservation.
Fig. 1 shows a kind of flow chart of the control method of air-conditioner with fixed frequency of the embodiment of the present invention.
Reference picture 1, the control method of the air-conditioner with fixed frequency that the embodiment of the present invention is proposed includes：
S1, acquisition current indoor temperature value and current outdoor temperature value；
S2, the set temperature value of the current indoor temperature value and air-conditioner with fixed frequency is compared；
S3, the current indoor temperature value be less than or equal to the set temperature value when, according to the current outdoor temperature
Angle value and the set temperature value adjust the cold medium flux of the air-conditioner with fixed frequency by electric expansion valve；
Wherein, electric expansion valve be arranged on the air-conditioner with fixed frequency compressor two ends for being directly compressed machine return-air
Connecting tube on.
The embodiment of the present invention carries out the detection of Indoor Temperature angle value Ti and outdoor temp angle value Tx according to preset time period, and obtains
Current indoor temperature value Ti and current outdoor temperature value Tx is taken, according to the Indoor Temperature angle value Ti and air-conditioner with fixed frequency remote control
The magnitude relationship of set temperature value Ts carries out the operation control of air-conditioner with fixed frequency.When Indoor Temperature angle value Ti sets less than or equal to air-conditioning
During constant temperature angle value Ts, then adjusted by electric expansion valve according to the air-conditioning set temperature value Ts and outdoor temp angle value Tx
The cold medium flux of the air-conditioner with fixed frequency.When Indoor Temperature angle value Ti is more than air-conditioning set temperature value Ts, then the electronics is closed
Expansion valve, Lx=0 keeps the normal operation of air-conditioner with fixed frequency.
It is described that electronic expansion is passed through according to the current outdoor temperature value and the set temperature value in the embodiment of the present invention
Valve adjusts the cold medium flux of the air-conditioner with fixed frequency, including：
The aperture Lx of the electric expansion valve is adjusted according to the current outdoor temperature value and the set temperature value, is realized
Adjust the cold medium flux of the air-conditioner with fixed frequency.
Further, it is described that opening for electric expansion valve is adjusted according to the current outdoor temperature value and the set temperature value
Degree, including：
According to the refrigeration relation table for pre-building, it is determined that the corresponding refrigeration energy of set temperature value of current air-conditioner with fixed frequency
Power, using the refrigerating capacity as the air-conditioner with fixed frequency the first refrigerating capacity；Wherein, the refrigeration relation table sets for multiple
The corresponding relation of temperature value and refrigerating capacity；
According to first refrigerating capacity, the outdoor temp angle value pass corresponding with electronic expansion valve opening that selection pre-builds
It is table；Multiple outdoor temp angle value that are stored with the mapping table and the corresponding electronic expansion valve opening of each outdoor temp angle value；
The current outdoor temperature value Tx is matched with the mapping table；
If the mapping table includes：T1、T2、T3, and corresponding electronic expansion valve opening is Lx (T1)、Lx
(T2)、Lx(T3), wherein, T1>T2>T3；
Then, Tx >=T1, it is Lx=Lx (T to adjust the electronic expansion valve opening1)；
T1 ＞ Tx >=T2, it is Lx=(Lx (T to adjust the electronic expansion valve opening2)-Lx(T1))*(T1-Tx)/10+Lx
(T1)；
T2＞ Tx >=T3, adjustment electronic expansion valve opening is Lx=(Lx (T3)-Lx(T2))*(T2-Tx)/10+Lx(T2)；
Tx<T3, adjustment electronic expansion valve opening is Lx=Lx (T3)。
Under the different refrigerating capacity of air-conditioner with fixed frequency, outdoor temp angle value is different from the corresponding relation of electronic expansion valve opening,
The mapping table of the outdoor temp angle value and electronic expansion valve opening pre-build according to current refrigeration ability, selection is needed,
Under the current refrigeration ability of air-conditioner with fixed frequency, the first default outdoor temp angle value T is determined respectively1, the second default outdoor temp angle value T2With
And the 3rd default outdoor temp angle value T3Corresponding electronic expansion valve opening Lx (T1)、Lx(T2) and Lx (T3), wherein, T1>T2>
T3, and then the current outdoor temperature value Tx is matched with the mapping table, realize electronic expansion valve opening Lx's
Control.
In the embodiment of the present invention, before the acquisition current indoor temperature value and current outdoor temperature value, methods described
Also include：
The set temperature value of air-conditioner with fixed frequency and the refrigeration relation table of the refrigerating capacity of the air-conditioner with fixed frequency are set up,
And/or,
The mapping table of multiple outdoor temp angle value and electronic expansion valve opening is set up, the outdoor temp angle value sets for user
Fixed outdoor temp angle value.
In the embodiment of the present invention by indoor temperature test point is set and indoor temperature test point carry out Indoor Temperature angle value and
All temperature detecting points are detected once by the detection of outdoor temp angle value per preset time period, according to the Indoor Temperature angle value and
The change of outdoor temp angle value adjusts the electronic expansion valve opening, and electronic expansion valve opening updates once per preset time period.
Preset time period may be configured as 30S.
It will be appreciated that preset time period may be configured as 30S, it is also possible to carry out other settings according to the actual requirements, this
Invention is not especially limited to this.
The present invention is clearly illustrated below by specific embodiment.
Setting：Ti:Indoor Temperature angle value, Ts：Air-conditioning set temperature value, Tx：Outdoor temp angle value, Lx：Electronic expansion valve opening,
W:Air-conditioner rated capacity, Q:The actual refrigerating capacity of air-conditioning；
First, the magnitude relationship to Indoor Temperature angle value Ti and the air-conditioning set temperature value Ts of air-conditioner with fixed frequency remote control is carried out
Judge；
When Indoor Temperature angle value Ti is more than air-conditioning set temperature value Ts, then the electric expansion valve is closed, Lx=0 keeps
The normal operation of air-conditioner with fixed frequency.
When Indoor Temperature angle value Ti is less than or equal to air-conditioning set temperature value Ts, then according to the air-conditioning set temperature value Ts
And the outdoor temp angle value Tx adjusts the electronic expansion valve opening Lx.
The default span [17 DEG C, 30 DEG C] of the design temperature of air-conditioner with fixed frequency, enters trip temperature in the embodiment of the present invention
Temperature range is obtained after interval division：[17℃,18℃]、[19℃,21℃]、[22℃,24℃]、[25℃,27℃]、[28℃,
30 DEG C], the corresponding control flow of each temperature range is specifically included：
A Ts=17/18 DEG C of (), adjusts electronic expansion valve opening Lx, according to the refrigeration relation table for pre-building, it is determined that currently
The corresponding refrigerating capacity of set temperature value of air-conditioner with fixed frequency, specifically includes：Adjust the actual refrigerating capacity Q=air-conditionings of air-conditioner
Device rated capacity W*a%, a are the preset control parameters of the refrigerating capacity of air-conditioner, preferably 78≤a≤82, take a definite value；
T1、T2And T3Respectively 40 DEG C, 30 DEG C, 20 DEG C, according to the outdoor temp that current refrigeration ability, selection pre-build
Angle value and the mapping table of electronic expansion valve opening, draw current Lx (40 DEG C), Lx (30 DEG C), Lx (20 DEG C)；
Tx >=40 DEG C, electronic expansion valve opening Lx=Lx (40 DEG C)；
40 DEG C of ＞ Tx >=30 DEG C, electronic expansion valve opening Lx=(Lx (30 DEG C)-Lx (40 DEG C)) * (40-Tx)/10+Lx (40
℃)；
30 DEG C of ＞ Tx >=20 DEG C, electronic expansion valve opening Lx=(Lx (20 DEG C)-Lx (30 DEG C)) * (30-Tx)/10+Lx (30
℃)；
Tx<20 DEG C, electronic expansion valve opening Lx=Lx (20 DEG C)；
Wherein, Ti≤Ts-1 DEG C, Lx (i+1)=Lx (i)+2；
B Ts=19/20/21 DEG C of (), adjusts electronic expansion valve opening Lx, according to the refrigeration relation table for pre-building, it is determined that
The corresponding refrigerating capacity of set temperature value of current air-conditioner with fixed frequency, specifically includes：Adjust the actual refrigerating capacity Q=of air-conditioner
W*a%, a are the preset control parameters of the refrigerating capacity of air-conditioner, preferably 68≤a≤72, take a definite value；
T1、T2And T3Respectively 40 DEG C, 30 DEG C, 20 DEG C, according to the outdoor temp that current refrigeration ability, selection pre-build
Angle value and the mapping table of electronic expansion valve opening, draw current Lx (40 DEG C), Lx (30 DEG C), Lx (20 DEG C)；
Tx >=40 DEG C, electronic expansion valve opening Lx=Lx (40 DEG C)；
40 DEG C of ＞ Tx >=30 DEG C, electronic expansion valve opening Lx=(Lx (30 DEG C)-Lx (40 DEG C)) * (40-Tx)/10+Lx (40
℃)；
30 DEG C of ＞ Tx >=20 DEG C, electronic expansion valve opening Lx=(Lx (20 DEG C)-Lx (30 DEG C)) * (30-Tx)/10+Lx (30
℃)；
Tx<20 DEG C, electronic expansion valve opening Lx=Lx (20 DEG C)；
Wherein, Ti≤Ts-1 DEG C, Lx (i+1)=Lx (i)+2；
C Ts=22/23/24 DEG C of (), adjusts electronic expansion valve opening Lx, according to the refrigeration relation table for pre-building, it is determined that
The corresponding refrigerating capacity of set temperature value of current air-conditioner with fixed frequency, specifically includes：Adjust the actual refrigerating capacity Q=of air-conditioner
W*a%, a are the preset control parameters of the refrigerating capacity of air-conditioner, preferably 58≤a≤62, take a definite value；
T1、T2And T3Respectively 40 DEG C, 30 DEG C, 20 DEG C, according to the outdoor temp that current refrigeration ability, selection pre-build
Angle value and the mapping table of electronic expansion valve opening, draw current Lx (40 DEG C), Lx (30 DEG C), Lx (20 DEG C)；
Tx >=40 DEG C, electronic expansion valve opening Lx=Lx (40 DEG C)；
40 DEG C of ＞ Tx >=30 DEG C, electronic expansion valve opening Lx=(Lx (30 DEG C)-Lx (40 DEG C)) * (40-Tx)/10+Lx (40
℃)；
30 DEG C of ＞ Tx >=20 DEG C, electronic expansion valve opening Lx=(Lx (20 DEG C)-Lx (30 DEG C)) * (30-Tx)/10+Lx (30
℃)；
Tx<20 DEG C, electronic expansion valve opening Lx=Lx (20 DEG C)；
Wherein, Ti≤Ts-1 DEG C, Lx (i+1)=Lx (i)+2；
D Ts=25/26/27 DEG C of (), adjusts electronic expansion valve opening Lx, according to the refrigeration relation table for pre-building, it is determined that
The corresponding refrigerating capacity of set temperature value of current air-conditioner with fixed frequency, specifically includes：Adjust the actual refrigerating capacity Q=of air-conditioner
W*a%, a are the preset control parameters of the refrigerating capacity of air-conditioner, preferably 48≤a≤52, take a definite value；
T1、T2And T3Respectively 40 DEG C, 30 DEG C, 20 DEG C, according to the outdoor temp that current refrigeration ability, selection pre-build
Angle value and the mapping table of electronic expansion valve opening, draw current Lx (40 DEG C), Lx (30 DEG C), Lx (20 DEG C)；
Tx >=40 DEG C, electronic expansion valve opening Lx=Lx (40 DEG C)；
40 DEG C of ＞ Tx >=30 DEG C, electronic expansion valve opening Lx=(Lx (30 DEG C)-Lx (40 DEG C)) * (40-Tx)/10+Lx (40
℃)；
30 DEG C of ＞ Tx >=20 DEG C, electronic expansion valve opening Lx=(Lx (20 DEG C)-Lx (30 DEG C)) * (30-Tx)/10+Lx (30
℃)；
Tx<20 DEG C, electronic expansion valve opening Lx=Lx (20 DEG C)；
Wherein, Ti≤Ts-1 DEG C, Lx (i+1)=Lx (i)+2；
E Ti≤Ts=28/29/30 DEG C of (), adjusts electronic expansion valve opening Lx, according to the refrigeration relation table for pre-building,
It is determined that the corresponding refrigerating capacity of set temperature value of current air-conditioner with fixed frequency, specifically includes：Adjust the actual refrigeration energy of air-conditioner
Power Q=W*a%, a are the preset control parameters of the refrigerating capacity of air-conditioner, preferably 38≤a≤42, take a definite value；
T1、T2And T3Respectively 40 DEG C, 30 DEG C, 20 DEG C, according to the outdoor temp that current refrigeration ability, selection pre-build
Angle value and the mapping table of electronic expansion valve opening, draw current Lx (40 DEG C), Lx (30 DEG C), Lx (20 DEG C)；
Tx >=40 DEG C, electronic expansion valve opening Lx=Lx (40 DEG C)；
40 DEG C of ＞ Tx >=30 DEG C, electronic expansion valve opening Lx=(Lx (30 DEG C)-Lx (40 DEG C)) * (40-Tx)/10+Lx (40
℃)；
30 DEG C of ＞ Tx >=20 DEG C, electronic expansion valve opening Lx=(Lx (20 DEG C)-Lx (30 DEG C)) * (30-Tx)/10+Lx (30
℃)；
Tx<20 DEG C, electronic expansion valve opening Lx=Lx (20 DEG C)；
Wherein, Ti≤Ts-1 DEG C, Lx (i+1)=Lx (i)+2.
The embodiment of the present invention sets the connection for being directly compressed machine return-air at the compressor two ends of the air-conditioner with fixed frequency
Pipe, and electric expansion valve is set in the connecting tube, when being less than or equal to air-conditioning set temperature value by temperature value indoors,
The electronic expansion valve opening is adjusted according to the air-conditioning set temperature value and the outdoor temp angle value, and then to compressor
The control of cold medium flux, can avoid frequently shutting down the influence to the fluctuation of room temperature and to the compressor life-span up to temperature,
Realize automatically controlling for fixed frequency air conditioner energy-conservation comfortable function.
Fig. 2 shows a kind of structured flowchart of the controller of air-conditioner with fixed frequency that another embodiment of the present invention is proposed；
In the embodiment of the present invention, the company for being directly compressed machine return-air is set at the compressor two ends of the air-conditioner with fixed frequency
Adapter, and electric expansion valve is set in the connecting tube, by a kind of controller pair of air-conditioner with fixed frequency proposed by the present invention
The aperture of the electric expansion valve is controlled, and realizes the control of the cold medium flux of the compressor, and then can avoid frequently
Shut down influence to the fluctuation of room temperature and to the compressor life-span up to temperature, realize fixed frequency air conditioner energy-conservation comfortable function from
Dynamic control.
Reference picture 2, the controller of the air-conditioner with fixed frequency that the embodiment of the present invention is proposed includes acquiring unit 10, comparing unit 20
And control unit 30, wherein：
Described acquiring unit 10, for obtaining current indoor temperature value and current outdoor temperature value；
Described comparing unit 20, for the current indoor temperature value and the air-conditioner with fixed frequency that obtain the acquiring unit
Set temperature value is compared；
Described control unit 30, for the comparative result in the comparing unit for current indoor temperature value is less than or waits
When the set temperature value, institute is adjusted by electric expansion valve according to the current outdoor temperature value and the set temperature value
State the cold medium flux of air-conditioner with fixed frequency；
Wherein, electric expansion valve be arranged on the air-conditioner with fixed frequency compressor two ends for being directly compressed machine return-air
Connecting tube on.
Further, described control unit 30, for being adjusted according to the current outdoor temperature value and the set temperature value
The aperture of the whole electric expansion valve, realizes the cold medium flux of the adjustment air-conditioner with fixed frequency.
Further, described control unit 30 includes：
Refrigerating capacity regulator unit, for according to the refrigeration relation table that pre-builds, it is determined that current air-conditioner with fixed frequency
The corresponding refrigerating capacity of set temperature value, using the refrigerating capacity as the air-conditioner with fixed frequency the first refrigerating capacity；The system
Cold relation table is the corresponding relation of multiple set temperature values and refrigerating capacity；
Selection subelement, for according to first refrigerating capacity, the outdoor temp angle value that selection pre-builds to be swollen with electronics
The mapping table of swollen valve opening；Multiple outdoor temp angle value that are stored with the mapping table and each outdoor temp angle value are corresponding
Electronic expansion valve opening；
Coupling subelement, for the current outdoor temperature value Tx to be matched with the mapping table；
Control subelement, if including for the mapping table：T1、T2、T3, and corresponding electric expansion valve opens
It is Lx (T to spend1)、Lx(T2)、Lx(T3), wherein, T1>T2>T3；
Then, Tx >=T1, it is Lx=Lx (T to adjust the electronic expansion valve opening1)；
T1＞ Tx >=T2, it is Lx=(Lx (T to adjust the electronic expansion valve opening2)-Lx(T1))*(T1-Tx)/10+Lx
(T1)；
T2＞ Tx >=T3, adjustment electronic expansion valve opening is Lx=(Lx (T3)-Lx(T2))*(T2-Tx)/10+Lx(T2)；
Tx<T3, adjustment electronic expansion valve opening is Lx=Lx (T3)。
The controller of the air-conditioner with fixed frequency that the embodiment of the present invention is proposed also includes：
Refrigeration relation table sets up unit, for acquiring unit obtain current indoor temperature value and current outdoor temperature value it
Before, the set temperature value of air-conditioner with fixed frequency and the refrigeration relation table of the refrigerating capacity of the air-conditioner with fixed frequency are set up,
And/or,
Mapping table sets up unit, for acquiring unit obtain current indoor temperature value and current outdoor temperature value it
Before, the mapping table of multiple outdoor temp angle value and electronic expansion valve opening is set up, the outdoor temp angle value is user's setting
Outdoor temp angle value.
Further embodiment of this invention additionally provides a kind of air-conditioner with fixed frequency, including temperature sensor, compressor, in the pressure
Contracting machine two ends set for the electric expansion valve that is directly compressed the connecting tube of machine return-air, is arranged in the connecting tube with
And the controller described in any of the above-described embodiment；
The temperature sensor detects current indoor temperature value and current outdoor temperature value, the current indoor temperature that will be detected
Value and current outdoor temperature value are sent to the controller；
The controller obtains the current indoor temperature value and current outdoor temperature value, judges the current indoor temperature
When value is less than or equal to default set temperature value, according to the current outdoor temperature value and set temperature value adjustment
The aperture of electric expansion valve, realizes the cold medium flux in the control compressor.
The operation principle of the air-conditioner with fixed frequency, as shown in figure 3, being set less than or equal to air-conditioning by temperature value indoors
During temperature value, the electronic expansion valve opening is adjusted according to the air-conditioning set temperature value and the outdoor temp angle value, and then
Control to the cold medium flux of compressor, can avoid frequently being shut down to the fluctuation of room temperature and to the compressor longevity up to temperature
The influence of life, realizes automatically controlling for fixed frequency air conditioner energy-conservation comfortable function.
Further, the temperature sensor is regular or is periodically detected Indoor Temperature angle value and outdoor temp angle value, will detect
Newest Indoor Temperature angle value and outdoor temp angle value be sent to the control as current indoor temperature value and current outdoor temperature value
Device processed.
Interior is carried out to indoor temperature test point and indoor temperature test point by temperature sensor in the embodiment of the present invention
All temperature detecting points are detected once that corresponding electronics is swollen per preset time period by the detection of temperature value and outdoor temp angle value
Swollen valve opening is adjusted once per preset time period.Preset time period can be configured, such as 30S.
The control method of air-conditioner with fixed frequency, controller and air-conditioner with fixed frequency that the present invention is provided, in the pressure of air-conditioner with fixed frequency
What contracting machine two ends were set is directly compressed the connecting tube of machine return-air, the electric expansion valve being arranged in the connecting tube, passes through
Control the aperture of the electric expansion valve to control the cold medium flux of the compressor, so can avoid frequently being shut down up to temperature it is right
The fluctuation of room temperature and the influence to the compressor life-span, realize automatically controlling for fixed frequency air conditioner energy-conservation comfortable function.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can lead to
Cross hardware realization, it is also possible to realize by the mode of software plus necessary general hardware platform.Based on such understanding, this hair
Bright technical scheme can be embodied in the form of software product, and the software product can be stored in a non-volatile memories
Medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in, including some instructions are used to so that a computer equipment (can be
Personal computer, server, or network equipment etc.) perform method described in each embodiment of the invention.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for preferred embodiment, module or stream in accompanying drawing
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in system in embodiment can be divided according to embodiment description
It is distributed in the system of embodiment, it is also possible to carry out respective change and be disposed other than in one or more systems of the present embodiment.On
Stating the module of embodiment can merge into a module, it is also possible to be further split into multiple submodule.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of control method of air-conditioner with fixed frequency, it is characterised in that methods described includes：
Obtain current indoor temperature value and current outdoor temperature value；
The current indoor temperature value and the set temperature value of air-conditioner with fixed frequency are compared；
When the current indoor temperature value is less than or equal to the set temperature value, according to the current outdoor temperature value and institute
State the cold medium flux that set temperature value adjusts the air-conditioner with fixed frequency by electric expansion valve；
The electric expansion valve is arranged on the company for being directly compressed machine return-air at the air-conditioner with fixed frequency compressor two ends
In adapter.
2. method according to claim 1, it is characterised in that described according to the current outdoor temperature value and the setting
Temperature value adjusts the cold medium flux of the air-conditioner with fixed frequency by electric expansion valve, including：
The aperture of the electric expansion valve is adjusted according to the current outdoor temperature value and the set temperature value, adjustment institute is realized
State the cold medium flux of air-conditioner with fixed frequency.
3. method according to claim 2, it is characterised in that described according to the current outdoor temperature value and the setting
Temperature value adjusts the aperture of electric expansion valve, including：
According to the refrigeration relation table for pre-building, it is determined that the corresponding refrigerating capacity of set temperature value of current air-conditioner with fixed frequency, will
The refrigerating capacity as the air-conditioner with fixed frequency the first refrigerating capacity；The refrigeration relation table is multiple set temperature values and system
The corresponding relation of cold energy power；
The outdoor temp angle value and the corresponding relation of electronic expansion valve opening pre-build according to first refrigerating capacity, selection
Table；Multiple outdoor temp angle value that are stored with the mapping table and the corresponding electronic expansion valve opening of each outdoor temp angle value；
The current outdoor temperature value Tx is matched with the mapping table；
If the mapping table includes：T1、T2、T3, and corresponding electronic expansion valve opening is Lx (T1)、Lx(T2)、Lx
(T3), wherein, T1>T2>T3；
Then, Tx >=T1, it is Lx=Lx (T to adjust the electronic expansion valve opening1)；
T1 ＞ Tx >=T2, it is Lx=(Lx (T to adjust the electronic expansion valve opening2)-Lx(T1))*(T1-Tx)/10+Lx(T1)；
T2＞ Tx >=T3, adjustment electronic expansion valve opening is Lx=(Lx (T3)-Lx(T2))*(T2-Tx)/10+Lx(T2)；
Tx<T3, adjustment electronic expansion valve opening is Lx=Lx (T3)。
4. the method according to claim any one of 1-3, it is characterised in that the acquisition current indoor temperature value and current
Before outdoor temp angle value, methods described also includes：
The set temperature value of air-conditioner with fixed frequency and the refrigeration relation table of the refrigerating capacity of the air-conditioner with fixed frequency are set up,
And/or,
Set up the mapping table of multiple outdoor temp angle value and electronic expansion valve opening.
5. a kind of controller of air-conditioner with fixed frequency, it is characterised in that the controller includes：
Acquiring unit, for obtaining current indoor temperature value and current outdoor temperature value；
Comparing unit, current indoor temperature value and the set temperature value of air-conditioner with fixed frequency for the acquiring unit to be obtained are entered
Row compares；
Control unit, for the comparative result in the comparing unit for current indoor temperature value is warm less than or equal to the setting
During angle value, the air-conditioner with fixed frequency is adjusted by electric expansion valve according to the current outdoor temperature value and the set temperature value
Cold medium flux；
The electric expansion valve is arranged on the company for being directly compressed machine return-air at the air-conditioner with fixed frequency compressor two ends
In adapter.
6. controller according to claim 5, it is characterised in that described control unit, for according to the current outdoor
Temperature value and the set temperature value adjust the aperture of the electric expansion valve, realize the refrigerant stream of the adjustment air-conditioner with fixed frequency
Amount.
7. controller according to claim 6, it is characterised in that described control unit includes：
Refrigerating capacity regulator unit, for according to the refrigeration relation table for pre-building, it is determined that the setting of current air-conditioner with fixed frequency
The corresponding refrigerating capacity of temperature value, using the refrigerating capacity as the air-conditioner with fixed frequency the first refrigerating capacity；The refrigeration is closed
It is corresponding relation that table is multiple set temperature values and refrigerating capacity；
Selection subelement, for the outdoor temp angle value and electric expansion valve that are pre-build according to first refrigerating capacity, selection
The mapping table of aperture；Multiple outdoor temp angle value that are stored with the mapping table and the corresponding electronics of each outdoor temp angle value
Expansion valve opening；
Coupling subelement, for the current outdoor temperature value Tx to be matched with the mapping table；
Control subelement, if including for the mapping table：T1、T2、T3, and corresponding electronic expansion valve opening is
Lx(T1)、Lx(T2)、Lx(T3), wherein, T1>T2>T3；
Then, Tx >=T1, it is Lx=Lx (T to adjust the electronic expansion valve opening1)；
T1＞ Tx >=T2, it is Lx=(Lx (T to adjust the electronic expansion valve opening2)-Lx(T1))*(T1-Tx)/10+Lx(T1)；
T2＞ Tx >=T3, adjustment electronic expansion valve opening is Lx=(Lx (T3)-Lx(T2))*(T2-Tx)/10+Lx(T2)；
Tx<T3, adjustment electronic expansion valve opening is Lx=Lx (T3)。
8. the controller according to claim any one of 5-7, it is characterised in that the controller also includes：
Refrigeration relation table sets up unit, for before acquiring unit obtains current indoor temperature value and current outdoor temperature value,
The set temperature value of air-conditioner with fixed frequency and the refrigeration relation table of the refrigerating capacity of the air-conditioner with fixed frequency are set up,
And/or,
Mapping table sets up unit, for before acquiring unit obtains current indoor temperature value and current outdoor temperature value,
Set up the mapping table of multiple outdoor temp angle value and electronic expansion valve opening.
9. a kind of air-conditioner with fixed frequency, it is characterised in that including：
Temperature sensor, compressor, the compressor two ends set the connecting tube for being directly compressed machine return-air, set
Put the electric expansion valve in the connecting tube and the controller as described in claim any one of 5-8；
The temperature sensor detects current indoor temperature value and current outdoor temperature value, the current indoor temperature value that will detect and
Current outdoor temperature value is sent to the controller；
The controller obtains the current indoor temperature value and current outdoor temperature value, judges that the current indoor temperature value is small
When default set temperature value, the electronics is adjusted according to the current outdoor temperature value and the set temperature value
The aperture of expansion valve, realizes the cold medium flux in the control compressor.
10. air-conditioner with fixed frequency according to claim 9, it is characterised in that the temperature sensor periodically or is periodically examined
Indoor Temperature angle value and outdoor temp angle value are surveyed, the newest Indoor Temperature angle value and outdoor temp angle value that will be detected are used as current indoor temperature
Value and current outdoor temperature value are sent to the controller.
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222445B (en) * | 2015-10-30 | 2017-11-17 | Tcl空调器(中山)有限公司 | Control method, device and the air-conditioner set and its control method of electric expansion valve |
| CN105546742B (en) * | 2015-12-25 | 2018-10-26 | 美的集团武汉制冷设备有限公司 | The control method and device of air conditioner and air conditioner |
| CN105650829A (en) * | 2016-03-14 | 2016-06-08 | 珠海格力电器股份有限公司 | Control method and device of fixed-frequency air conditioner |
| CN106196430A (en) * | 2016-06-30 | 2016-12-07 | 珠海格力电器股份有限公司 | System and method for automatically adjusting refrigerating capacity of fixed-frequency air conditioner |
| CN106594987B (en) * | 2016-12-02 | 2019-10-01 | 青岛海尔空调器有限总公司 | Fixed frequency air conditioner halt control method |
| CN107676939B (en) * | 2017-10-27 | 2021-02-26 | 广东志高暖通设备股份有限公司 | Control method, control system and control device of fixed-frequency air conditioner |
| CN108800466B (en) * | 2018-06-19 | 2021-08-20 | 广东美的制冷设备有限公司 | Control method and device of air conditioner |
| CN108518821B (en) * | 2018-06-19 | 2021-08-20 | 广东美的制冷设备有限公司 | Control method and device of air conditioner |
| CN108758976B (en) * | 2018-06-19 | 2021-03-19 | 广东美的制冷设备有限公司 | Control method and device of air conditioner and air conditioner with control device |
| CN109724203A (en) * | 2018-12-29 | 2019-05-07 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN109855257B (en) * | 2019-02-28 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method and device for improving comfort of air conditioner, air conditioner and storage medium |
| CN110081556B (en) * | 2019-05-07 | 2020-11-10 | 珠海格力电器股份有限公司 | Air conditioner regulation and control method and device |
| CN110529969A (en) * | 2019-09-12 | 2019-12-03 | 宁波奥克斯电气股份有限公司 | A kind of fixed frequency air conditioner control method, device and air conditioner |
| CN112665248B (en) * | 2020-12-28 | 2021-12-14 | 江苏拓米洛环境试验设备有限公司 | Multi-chamber flow control method and device of refrigeration system and refrigeration system |
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