CN105783193A - Initial opening degree control method and device for electronic expansion valve - Google Patents
Initial opening degree control method and device for electronic expansion valve Download PDFInfo
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- CN105783193A CN105783193A CN201610230771.9A CN201610230771A CN105783193A CN 105783193 A CN105783193 A CN 105783193A CN 201610230771 A CN201610230771 A CN 201610230771A CN 105783193 A CN105783193 A CN 105783193A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims description 46
- 238000001816 cooling Methods 0.000 claims description 14
- 238000005057 refrigeration Methods 0.000 claims description 14
- 229910002059 quaternary alloy Inorganic materials 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000000205 computational method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Classifications
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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
- F24F11/70—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
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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
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F24F11/70—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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- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an initial opening degree control method for an electronic expansion valve. The method includes the steps that after an air-conditioner is powered up for operation, the electronic expansion valve is controlled to be opened at first at a set opening degree, then reset and afterwards opened again; when the electronic expansion valve is opened again to a preset first opening degree, the opening degree of the electronic expansion valve is kept to be the first opening degree, and then the initial opening degree of the electronic expansion valve in the current environment is calculated according to the acquired compressor capacity, compressor operation frequency, environment temperature and air-conditioner power; and the electronic expansion valve is controlled to be opened at the initial opening degree. The invention further discloses an initial opening degree control device for the electronic expansion valve. By means of the initial opening degree control method and device for the electronic expansion valve, an appropriate initial opening degree can be obtained through self-adaptation calculation depending on the operation environment of the powered-on air-conditioner so as to approach the optimal opening degree, and therefore the air-conditioner can achieve the best heat transfer effect more quickly.
Description
Technical field
The present invention relates to air-conditioner field, particularly relate to initial opening control method and the device of a kind of electric expansion valve.
Background technology
In the air conditioner control system supporting electronic expansion valve controls, after starting electric expansion valve and initializing, the aperture of electric expansion valve can be arranged on predetermined initial opening.At present, the initial opening of electric expansion valve is often a fixed value pre-set, but, air-conditioner start every time after running environment be often different, when the running environment difference of air-conditioner, the aperture of electric expansion valve needs the change according to running environment to be adjusted, to reach the aperture of optimum, so that air-conditioner reaches best heat transfer effect, and adjust optimum aperture from the fixing initial opening pre-set and need a period of time, this can affect the heat transfer effect of air-conditioner.It is then desired to propose a kind of can start according to air-conditioner after running environment, adaptively determine a suitable initial opening with the scheme close to optimum aperture.
Summary of the invention
The present invention provides initial opening control method and the device of a kind of electric expansion valve, it is intended to realize the running environment after starting according to air-conditioner, adaptively determines a suitable initial opening with close optimum aperture.
For achieving the above object, the present invention provides the initial opening control method of a kind of electric expansion valve, and the initial opening control method of described electric expansion valve includes:
Air-conditioner powers on after operation, controls electric expansion valve and first opens with the aperture set, resets afterwards, opens；
When described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture, and according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances；
Control described electric expansion valve to open to described initial opening.
Preferably, in a heating mode, described ambient temperature includes outdoor environment temperature, compressor capacity that described basis gets, compressor operating frequency, ambient temperature, air-conditioner power, calculates described electric expansion valve initial opening under the present circumstances and includes:
Calculate described compressor capacity and the product of described compressor operating frequency, after calculated product and the first preset variable being rounded, obtain simple and easy circulating load；
The value of each coefficient and variable in the first preset formula is determined according to described air-conditioner power and described outdoor environment temperature, and in conjunction with described simple and easy circulating load, described outdoor environment temperature and the first preset aperture offset, calculate according to described first formula and stablize aperture；Wherein, described first formula is: stablize aperture=(the first coefficient × simple and easy circulating load the-the second variable) × (the second coefficient × outdoor environment temperature the+the ternary)+the first aperture offset；
Calculated described stablize aperture and the first preset value range and during more than or equal to preset first point of inflection, calculate initial opening according to the second preset formula, otherwise, calculate initial opening according to the 3rd preset formula；Wherein, described second formula is: initial opening=(stablizing aperture the+the first value range-the first point of inflection)/first flow ratio+the first point of inflection, described 3rd formula is: initial opening=stablize aperture the+the first value range, described first flow ratio is flow rate ratio preset under heating mode.
Preferably, in cooling mode, described ambient temperature includes indoor environment temperature and outdoor environment temperature, compressor capacity that described basis gets, compressor operating frequency, ambient temperature, air-conditioner power, calculates described electric expansion valve initial opening under the present circumstances and includes:
Calculate described compressor capacity and the product of described compressor operating frequency, after calculated product and the first preset variable being rounded, obtain simple and easy circulating load；
The value of each coefficient and variable in the 4th preset formula is determined according to described air-conditioner power and described simple and easy circulating load, and in conjunction with described simple and easy circulating load, described indoor environment temperature, described outdoor environment temperature and the second preset aperture offset, calculate according to described 4th formula and stablize aperture；Wherein, described 4th formula is: stablize aperture=(the 3rd coefficient × simple and easy circulating load the+the four variable) × (Quaternary system number × (indoor environment temperature-outdoor environment temperature) the+the five variable) the+the second aperture offset；
Calculated described stablize aperture and the second preset value range and during more than or equal to preset second point of inflection, calculate initial opening according to the 5th preset formula, otherwise, calculate initial opening according to the 6th preset formula；Wherein, described 5th formula is: initial opening=(stablizing aperture the+the second value range-the second point of inflection)/second flow ratio+the second point of inflection, described 6th formula is: initial opening=stablize aperture the+the second value range, described second flow ratio is flow rate ratio preset under refrigeration mode.
Preferably, the initial opening control method of described electric expansion valve also includes:
Obtain under refrigeration mode or preset initial opening minima and initial opening maximum under heating mode；
Judge that whether calculated initial opening is more than or equal to described initial opening minima and less than or equal to described initial opening maximum；
When calculated initial opening is less than described initial opening minima, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, using described initial opening maximum as described initial opening.
Preferably, the initial opening control method of described electric expansion valve also includes:
In a heating mode, when described outdoor environment temperature is less than preset extremely low temperature, described initial opening minima being heightened the second preset aperture, wherein, described second aperture is less than described initial opening maximum.
For achieving the above object, the present invention also provides for the initial opening of a kind of electric expansion valve and controls device, and the initial opening of described electric expansion valve controls device and includes:
First controls module, powers on for air-conditioner after running, and controls electric expansion valve and first opens with the aperture set, resets afterwards, opens；When described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture；
Computing module, for when described electric expansion valve is again turned on and is opened to the first preset aperture, according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances；
Second controls module, is used for controlling described electric expansion valve and opens to described initial opening.
Preferably, in a heating mode, described ambient temperature includes outdoor environment temperature, and described computing module includes:
First computing unit, for calculating described compressor capacity and the product of described compressor operating frequency, obtains simple and easy circulating load after calculated product and the first preset variable being rounded；
Second computing unit, for determining the value of each coefficient and variable in the first preset formula according to described air-conditioner power and described outdoor environment temperature, and in conjunction with described simple and easy circulating load, described outdoor environment temperature and the first preset aperture offset, calculate according to described first formula and stablize aperture；Wherein, described first formula is: stablize aperture=(the first coefficient × simple and easy circulating load the-the second variable) × (the second coefficient × outdoor environment temperature the+the ternary)+the first aperture offset；
3rd computing unit, for calculated described stablize aperture and the first preset value range and during more than or equal to preset first point of inflection, calculate initial opening according to the second preset formula, otherwise, according to the 3rd preset formula calculating initial opening；Wherein, described second formula is: initial opening=(stablizing aperture the+the first value range-the first point of inflection)/first flow ratio+the first point of inflection, described 3rd formula is: initial opening=stablize aperture the+the first value range, described first flow ratio is flow rate ratio preset under heating mode.
Preferably, in cooling mode, described ambient temperature includes indoor environment temperature and outdoor environment temperature, and described computing module includes:
4th computing unit, for calculating described compressor capacity and the product of described compressor operating frequency, obtains simple and easy circulating load after calculated product and the first preset variable being rounded；
5th computing unit, for determining the value of each coefficient and variable in the 4th preset formula according to described air-conditioner power and described simple and easy circulating load, and in conjunction with described simple and easy circulating load, described indoor environment temperature, described outdoor environment temperature and the second preset aperture offset, calculate according to described 4th formula and stablize aperture；Wherein, described 4th formula is: stablize aperture=(the 3rd coefficient × simple and easy circulating load the+the four variable) × (Quaternary system number × (indoor environment temperature-outdoor environment temperature) the+the five variable) the+the second aperture offset；
6th computing unit, for calculated described stablize aperture and the second preset value range and during more than or equal to preset second point of inflection, calculate initial opening according to the 5th preset formula, otherwise, according to the 6th preset formula calculating initial opening；Wherein, described 5th formula is: initial opening=(stablizing aperture the+the second value range-the second point of inflection)/second flow ratio+the second point of inflection, described 6th formula is: initial opening=stablize aperture the+the second value range, described second flow ratio is flow rate ratio preset under refrigeration mode.
Preferably, the initial opening of described electric expansion valve controls device and also includes aperture restriction module, and described aperture restriction module includes:
Acquiring unit, is used for obtaining under refrigeration mode or preset initial opening minima and initial opening maximum under heating mode；
Judging unit, is used for judging that whether calculated initial opening is more than or equal to described initial opening minima and less than or equal to described initial opening maximum；
Updating block, for when calculated initial opening is less than described initial opening minima, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, using described initial opening maximum as described initial opening.
Preferably, in a heating mode, described aperture restriction module also includes:
Adjustment unit, for when described outdoor environment temperature is less than preset extremely low temperature, described initial opening minima being heightened the second preset aperture, wherein, described second aperture is less than described initial opening maximum.
nullThe initial opening control method of the electric expansion valve that the present invention proposes and device，First control electric expansion valve first to open with the aperture set、Rear reset、Open again，When described electric expansion valve is again turned on and is opened to the first preset aperture，The aperture maintaining described electric expansion valve is described first aperture，And according to the compressor capacity got、Compressor operating frequency、Ambient temperature、Air-conditioner power，Calculate described electric expansion valve initial opening under the present circumstances，Control described electric expansion valve to open to described initial opening，The initial opening making air-conditioner is no longer a fixing value，And be able to the running environment after powering on according to air-conditioner and adaptively determine a suitable initial opening，So that described electric expansion valve can reach optimum aperture at short notice，Air-conditioner is made to reach best heat transfer effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the initial opening control method first embodiment of electric expansion valve of the present invention；
Fig. 2 be electric expansion valve of the present invention initial opening control method the second embodiment in calculate the refinement schematic flow sheet of initial opening；
Fig. 3 be electric expansion valve of the present invention initial opening control method the 3rd embodiment in calculate the refinement schematic flow sheet of initial opening；
Fig. 4 is the refinement schematic flow sheet in initial opening control method the 4th embodiment of electric expansion valve of the present invention, the size of initial opening being defined；
Fig. 5 is the high-level schematic functional block diagram of the initial opening control device first embodiment of electric expansion valve of the present invention；
The initial opening that Fig. 6 is electric expansion valve of the present invention controls the refinement high-level schematic functional block diagram of computing module in device the second embodiment；
The initial opening that Fig. 7 is electric expansion valve of the present invention controls the refinement high-level schematic functional block diagram of computing module in device the 3rd embodiment；
The initial opening that Fig. 8 is electric expansion valve of the present invention controls the refinement high-level schematic functional block diagram of aperture restriction module in device the 4th embodiment；
The initial opening that Fig. 9 is electric expansion valve of the present invention controls the refinement high-level schematic functional block diagram of aperture restriction module in device the 5th embodiment.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides the initial opening control method of a kind of electric expansion valve, as shown in Figure 1, it is shown that the schematic flow sheet of the initial opening control method first embodiment of electric expansion valve of the present invention, and the initial opening control method of described electric expansion valve includes:
S10, air-conditioner power on after operation, control electric expansion valve and first open with the aperture set, reset afterwards, open；
Wherein, above-mentioned steps S10 specifically includes:
Air-conditioner powers on after operation, controls described electric expansion valve and opens to the 3rd aperture；When described electric expansion valve is opened to described three aperture, controls the closedown of described electric expansion valve and be reset to the 4th aperture；When described electric expansion valve is closed and reset to described four aperture, control described electric expansion valve and open to the first aperture.
The aperture of described setting can include one or more opening value, in the present embodiment, the aperture of described setting includes described 3rd aperture, described 4th aperture, described first aperture, described 3rd aperture, described 4th aperture, described first aperture is the opening value of three different values, it is set according to demand in the Default Value of air-conditioner by producer, such as, in the present embodiment, described 3rd aperture value is 248, described 4th aperture value is 520, described first aperture value is 480, wherein, the maximum opening that the structure of described electric expansion valve can be supported is 520, set air-conditioner and can control maximum opening that described electric expansion valve opens as 480.
That is, above-mentioned steps S10 specifically includes:
Air-conditioner powers on after operation, controls described electric expansion valve and opens to 248 apertures；When described electric expansion valve is opened to 248 aperture, controls the closedown of described electric expansion valve and be reset to 520 apertures；When described electric expansion valve is closed and reset to 520 aperture, control described electric expansion valve and open to 480 apertures.
S20, when described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture, and according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances；
When described electric expansion valve is again turned on and is opened to 480 aperture, air-conditioner maintains the aperture of described electric expansion valve on the one hand and opens in 480 apertures, on the other hand, air-conditioner starts to obtain described compressor capacity, described compressor operating frequency, described ambient temperature, described air-conditioner power, and the value according to these parameters got calculates described electric expansion valve initial opening under the present circumstances.
Wherein, described current environment refers to when described electric expansion valve is again turned on and is opened to 480 aperture, air-conditioner running environment at this moment；Described ambient temperature includes indoor environment temperature and/or outdoor environment temperature；Described compressor capacity is the Default Value parameter according to compressor and a value pre-setting；Described compressor operating frequency is the air-conditioner value according to the calculated compressor operating frequency of corresponding feedback current under the present circumstances；Described indoor environment temperature is the temperature value obtained according to the temperature sensor detection arranged on indoor set；Described outdoor environment temperature is the temperature value obtained according to the temperature sensor detection arranged on off-premises station；Described air-conditioner power is the operation performance number that air-conditioner detects under the present circumstances.
S30, control described electric expansion valve and open to described initial opening.
After the preset time period that can rise when described electric expansion valve is again turned on and is opened to the first preset aperture, or when obtaining described initial opening, air-conditioner controls described electric expansion valve and opens to described initial opening.Wherein, described preset time period is the duration value pre-set, for instance 1 second, its value was determined according to the actual requirements.Usually, calculate the duration spent by described initial duration less than described preset time period, if there is the duration calculated spent by described initial duration more than described preset time period, the aperture that then can continue to described electric expansion valve after described preset time period is described first aperture, until when calculating obtains described initial opening, controlling described electric expansion valve and open to described initial opening.
The initial opening control method of the electric expansion valve that the present invention proposes, first control electric expansion valve first to open with the aperture set, rear reset, open again, when described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture, and according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances, control described electric expansion valve to open to described initial opening, the initial opening making air-conditioner is no longer a fixing value, and be able to the running environment after powering on according to air-conditioner and adaptively determine a suitable initial opening, so that described electric expansion valve can reach optimum aperture at short notice, air-conditioner is made to reach best heat transfer effect.
Further, initial opening control method second embodiment of electric expansion valve of the present invention is proposed based on first embodiment, in the present embodiment, with reference to Fig. 2, in a heating mode, described ambient temperature includes outdoor environment temperature, compressor capacity that described basis gets, compressor operating frequency, ambient temperature, air-conditioner power, calculates described electric expansion valve initial opening under the present circumstances and includes:
S21, calculate described compressor capacity and the product of described compressor operating frequency, after calculated product and the first preset variable being rounded, obtain simple and easy circulating load；
The value of described first variable is the desired value determined according to great many of experiments, in the present embodiment, described first variable-value 100, the computing formula of described simple and easy circulating load is represented by:
Simple and easy circulating load=(compressor operating frequency × compressor capacity)/100
S22, determine the value of each coefficient and variable in the first preset formula according to described air-conditioner power and described outdoor environment temperature, and in conjunction with described simple and easy circulating load, described outdoor environment temperature and the first preset aperture offset, calculate according to described first formula and stablize aperture；
Wherein, described first formula is: stablize aperture=(the first coefficient × simple and easy circulating load the-the second variable) × (the second coefficient × outdoor environment temperature the+the ternary)+the first aperture offset；Described first aperture offset is the aperture offset that air-conditioner pre-sets in a heating mode, can set value according to the actual requirements, and in the present embodiment, described first aperture offset value is-12.
The value of each coefficient and variable in described first formula, it is that the different situations according to described air-conditioner power and described outdoor environment temperature are obtained by great many of experiments, in the present embodiment, it is referred to table 1 and determines the value of each coefficient and variable in described first formula.
The first formula corresponding under the different air-conditioner power of table 1 and different outdoor environment temperature
S23, calculated described stablize aperture and the first preset value range and during more than or equal to preset first point of inflection, calculate initial opening according to the second preset formula, otherwise, calculate initial opening according to the 3rd preset formula.
Wherein, described second formula is: initial opening=(stablizing aperture the+the first value range-the first point of inflection)/first flow ratio+the first point of inflection
Described 3rd formula is: initial opening=stablize aperture the+the first value range, described first flow ratio is flow rate ratio preset under heating mode.
Described first value range, described first point of inflection, described first flow ratio are all air-conditioner parameters in a heating mode, all can arrange a fixing value according to the characteristic of described electric expansion valve.In the present embodiment, described first value range is 150, and described first point of inflection is 180, and described first flow ratio is 5.0.
Thus just can calculating the initial opening of described electric expansion valve, described initial opening is also described electric expansion valve optimum aperture under the present circumstances, it is possible to make air-conditioner reach best heat transfer effect.
The initial opening control method of the electric expansion valve that the present invention proposes, when air-conditioner is under heating mode, according to the compressor capacity got, compressor operating frequency, outdoor environment temperature, air-conditioner power, and preset computing formula, can calculating the optimum aperture obtaining described electric expansion valve under the present circumstances, computational methods are simple and consuming time less.
Further, initial opening control method the 3rd embodiment of electric expansion valve of the present invention is proposed based on first embodiment, in the present embodiment, with reference to Fig. 3, in cooling mode, described ambient temperature includes indoor environment temperature and outdoor environment temperature, compressor capacity that described basis gets, compressor operating frequency, ambient temperature, air-conditioner power, calculates described electric expansion valve initial opening under the present circumstances and includes:
S24, calculate described compressor capacity and the product of described compressor operating frequency, after calculated product and the first preset variable being rounded, obtain simple and easy circulating load；
The value of described first variable is the desired value determined according to great many of experiments, in the present embodiment, described first variable-value 100, the computing formula of described simple and easy circulating load is represented by:
Simple and easy circulating load=(compressor operating frequency × compressor capacity)/100
S25, determine the value of each coefficient and variable in the 4th preset formula according to described air-conditioner power and described simple and easy circulating load, and in conjunction with described simple and easy circulating load, described indoor environment temperature, described outdoor environment temperature and the second preset aperture offset, calculate according to described 4th formula and stablize aperture；
Wherein, described 4th formula is: stablize aperture=(the 3rd coefficient × simple and easy circulating load the+the four variable) × (Quaternary system number × (indoor environment temperature-outdoor environment temperature) the+the five variable) the+the second aperture offset；Described second aperture offset is the aperture offset that air-conditioner pre-sets in cooling mode, can set value according to the actual requirements, and in the present embodiment, described second aperture offset value is-50.
The value of each coefficient and variable in described 4th formula, it is that the different situations according to described air-conditioner power and described simple and easy circulating load are obtained by great many of experiments, in the present embodiment, it is referred to table 2 and determines the value of each coefficient and variable in described 4th formula.
The 4th formula that the different air-conditioner power of table 2 is corresponding with under difference simple and easy circulating load
S26, calculated described stablize aperture and the second preset value range and during more than or equal to preset second point of inflection, calculate initial opening according to the 5th preset formula, otherwise, calculate initial opening according to the 6th preset formula；
Wherein, described 5th formula is: initial opening=(stablizing aperture the+the second value range-the second point of inflection)/second flow ratio+the second point of inflection
Described 6th formula is: initial opening=stablize aperture the+the second value range, described second flow ratio is flow rate ratio preset under refrigeration mode.
Described second value range, described second point of inflection, described second flow ratio are all air-conditioner parameters in cooling mode, all can arrange a fixing value according to the characteristic of described electric expansion valve.In the present embodiment, described second value range is 150, and described second point of inflection is 180, and described second flow ratio is 5.0.
Thus just can calculating the initial opening of described electric expansion valve, described initial opening is also described electric expansion valve optimum aperture under the present circumstances, it is possible to make air-conditioner reach best heat transfer effect.
The initial opening control method of the electric expansion valve that the present invention proposes, when air-conditioner is under refrigeration mode, according to the compressor capacity got, compressor operating frequency, indoor environment temperature, outdoor environment temperature, air-conditioner power, and preset computing formula, can calculating the optimum aperture obtaining described electric expansion valve under the present circumstances, computational methods are simple and consuming time less.
Further, proposing initial opening control method the 4th embodiment of electric expansion valve of the present invention based on the second embodiment or the 3rd embodiment, in the present embodiment, with reference to Fig. 4, the initial opening control method of described electric expansion valve also includes:
S41, obtain under refrigeration mode or preset initial opening minima and initial opening maximum under heating mode；
Described initial opening minima and described initial opening maximum are the values determined according to air-conditioner great many of experiments in cooling or heating mode, it is adjusted with the situation that calculated initial opening is excessive or too small, so that to initial opening do not deviate by the optimum aperture being actually needed, it is to avoid air-conditioner needs to adjust and described electric expansion valve just can be made after the long period to reach optimum aperture.
In the present embodiment, air-conditioner in cooling mode time, described initial opening minima can value be 240, and described initial opening maximum can value be 330；Air-conditioner in a heating mode time, described initial opening minima can value be 120, and described initial opening maximum can value be 290.
S42, judge that whether calculated initial opening is more than or equal to described initial opening minima and less than or equal to described initial opening maximum；
S43, when calculated initial opening is less than described initial opening minima, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, using described initial opening maximum as described initial opening.
When calculated initial opening is less than described initial opening minima, represent that calculated initial opening is too small, now, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, represent that calculated initial opening is excessive, now, using described initial opening maximum as described initial opening.
The initial opening control method of the electric expansion valve that the present invention proposes, for calculated initial opening, one suitable span is set, namely when calculated initial opening is less than preset initial opening minima, using described initial opening minima as described initial opening, when calculated initial opening is more than preset initial opening maximum, using described initial opening maximum as described initial opening, to ensure that the initial opening obtained does not deviate by the optimum aperture being actually needed, avoid air-conditioner that described electric expansion valve after needing the adjustment long period, just can be made to reach optimum aperture.
Further, proposing initial opening control method the 5th embodiment of electric expansion valve of the present invention based on the 4th embodiment, in the present embodiment, the initial opening control method of described electric expansion valve also includes:
In a heating mode, when described outdoor environment temperature is less than preset extremely low temperature, described initial opening minima being heightened the second preset aperture, wherein, described second aperture is less than described initial opening maximum.
For air-conditioner in a heating mode time currently detected outdoor environment temperature too low in the case of, as lower than-15 DEG C, now, air-conditioner, in order to reach the heating effect specified quickly, can limit described initial opening minima and be not less than described second aperture.Wherein, described second aperture is the desired value obtained according to great many of experiments, for instance 180 apertures；Described extremely low temperature is the temperature value set according to practical situation, for instance-15 DEG C.
When air-conditioner outdoor environment temperature in a heating mode is lower than described extremely low temperature, described initial opening minima under heating mode is heightened described second aperture by air-conditioner, when calculated initial opening is less than described second aperture, using the value of the described second aperture value as described initial opening.
The initial opening control method of the electric expansion valve that the present invention proposes, for air-conditioner in a heating mode time the outdoor environment temperature that detects lower than preset extremely low temperature in the case of, preset initial opening minima is heightened appointment aperture, so that the initial opening of described electric expansion valve is unlikely to very low and affects the quick heating effect of air-conditioner.
The present invention also provides for the initial opening of a kind of electric expansion valve and controls device, as shown in Figure 5, illustrating that the initial opening of electric expansion valve of the present invention controls the high-level schematic functional block diagram of device first embodiment, the initial opening of described electric expansion valve controls device and includes:
First controls module 100, powers on for air-conditioner after running, and controls electric expansion valve and first opens with the aperture set, resets afterwards, opens；When described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture；
Wherein, described first control module 100 specifically for:
Air-conditioner powers on after operation, controls described electric expansion valve and opens to the 3rd aperture；When described electric expansion valve is opened to described three aperture, controls the closedown of described electric expansion valve and be reset to the 4th aperture；When described electric expansion valve is closed and reset to described four aperture, control described electric expansion valve and open to the first aperture.
The aperture of described setting can include one or more opening value, in the present embodiment, the aperture of described setting includes described 3rd aperture, described 4th aperture, described first aperture, described 3rd aperture, described 4th aperture, described first aperture is the opening value of three different values, it is set according to demand in the Default Value of air-conditioner by producer, such as, in the present embodiment, described 3rd aperture value is 248, described 4th aperture value is 520, described first aperture value is 480, wherein, the maximum opening that the structure of described electric expansion valve can be supported is 520, set air-conditioner and can control maximum opening that described electric expansion valve opens as 480.
That is, described first control module 100 specifically for:
Air-conditioner powers on after operation, controls described electric expansion valve and opens to 248 apertures；When described electric expansion valve is opened to 248 aperture, controls the closedown of described electric expansion valve and be reset to 520 apertures；When described electric expansion valve is closed and reset to 520 aperture, control described electric expansion valve and open to 480 apertures.
Computing module 200, for when described electric expansion valve is again turned on and is opened to the first preset aperture, according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances；
When described electric expansion valve is again turned on and is opened to 480 aperture, first control module 100 of air-conditioner maintains the aperture of described electric expansion valve and opens in 480 apertures, meanwhile, the computing module 200 of air-conditioner starts to obtain described compressor capacity, described compressor operating frequency, described ambient temperature, described air-conditioner power, and the value according to these parameters got calculates described electric expansion valve initial opening under the present circumstances.
Wherein, described current environment refers to when described electric expansion valve is again turned on and is opened to 480 aperture, air-conditioner running environment at this moment；Described ambient temperature includes indoor environment temperature and/or outdoor environment temperature；Described compressor capacity is the Default Value parameter according to compressor and a value pre-setting；Described compressor operating frequency is the air-conditioner value according to the calculated compressor operating frequency of corresponding feedback current under the present circumstances；Described indoor environment temperature is the temperature value obtained according to the temperature sensor detection arranged on indoor set；Described outdoor environment temperature is the temperature value obtained according to the temperature sensor detection arranged on off-premises station；Described air-conditioner power is the operation performance number that air-conditioner detects under the present circumstances.
Second controls module 300, is used for controlling described electric expansion valve and opens to described initial opening.
After the preset time period that can rise when described electric expansion valve is again turned on and is opened to the first preset aperture, or when obtaining described initial opening, the second control module 300 of air-conditioner controls described electric expansion valve and opens to described initial opening.Wherein, described preset time period is the duration value pre-set, for instance 1 second, its value was determined according to the actual requirements.Usually, calculate the duration spent by described initial duration less than described preset time period, if there is the duration calculated spent by described initial duration more than described preset time period, the aperture that then described second control module 300 can continue to described electric expansion valve after described preset time period is described first aperture, until when calculating obtains described initial opening, controlling described electric expansion valve and open to described initial opening.
The initial opening of the electric expansion valve that the present invention proposes controls device, first control electric expansion valve first to open with the aperture set, rear reset, open again, when described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture, and according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances, control described electric expansion valve to open to described initial opening, the initial opening making air-conditioner is no longer a fixing value, and be able to the running environment after powering on according to air-conditioner and adaptively determine a suitable initial opening, so that described electric expansion valve can reach optimum aperture at short notice, air-conditioner is made to reach best heat transfer effect.
Further, the initial opening proposing electric expansion valve of the present invention based on above-mentioned first embodiment controls device the second embodiment, in the present embodiment, with reference to Fig. 6, in a heating mode, described ambient temperature includes outdoor environment temperature, and described computing module 200 includes:
First computing unit 201, for calculating described compressor capacity and the product of described compressor operating frequency, obtains simple and easy circulating load after calculated product and the first preset variable being rounded；
The value of described first variable is the desired value determined according to great many of experiments, in the present embodiment, described first variable-value 100, the computing formula of described simple and easy circulating load is represented by:
Simple and easy circulating load=(compressor operating frequency × compressor capacity)/100
Second computing unit 202, for determining the value of each coefficient and variable in the first preset formula according to described air-conditioner power and described outdoor environment temperature, and in conjunction with described simple and easy circulating load, described outdoor environment temperature and the first preset aperture offset, calculate according to described first formula and stablize aperture；
Wherein, described first formula is: stablize aperture=(the first coefficient × simple and easy circulating load the-the second variable) × (the second coefficient × outdoor environment temperature the+the ternary)+the first aperture offset；Described first aperture offset is the aperture offset that air-conditioner pre-sets in a heating mode, can set value according to the actual requirements, and in the present embodiment, described first aperture offset value is-12.
The value of each coefficient and variable in described first formula, it is that the different situations according to described air-conditioner power and described outdoor environment temperature are obtained by great many of experiments, in the present embodiment, it is referred to table 1 and determines the value of each coefficient and variable in described first formula.
The first formula corresponding under the different air-conditioner power of table 1 and different outdoor environment temperature
3rd computing unit 203, for calculated described stablize aperture and the first preset value range and during more than or equal to preset first point of inflection, calculate initial opening according to the second preset formula, otherwise, calculate initial opening according to the 3rd preset formula；
Wherein, described second formula is: initial opening=(stablizing aperture the+the first value range-the first point of inflection)/first flow ratio+the first point of inflection
Described 3rd formula is: initial opening=stablize aperture the+the first value range, described first flow ratio is flow rate ratio preset under heating mode.
Described first value range, described first point of inflection, described first flow ratio are all air-conditioner parameters in a heating mode, all can arrange a fixing value according to the characteristic of described electric expansion valve.In the present embodiment, described first value range is 150, and described first point of inflection is 180, and described first flow ratio is 5.0.
Thus just can calculating the initial opening of described electric expansion valve, described initial opening is also described electric expansion valve optimum aperture under the present circumstances, it is possible to make air-conditioner reach best heat transfer effect.
The initial opening of the electric expansion valve that the present invention proposes controls device, when air-conditioner is under heating mode, according to the compressor capacity got, compressor operating frequency, outdoor environment temperature, air-conditioner power, and preset computing formula, the optimum aperture obtaining described electric expansion valve under the present circumstances can be calculated, calculate simple and consuming time less.
Further, the initial opening proposing electric expansion valve of the present invention based on above-mentioned first embodiment controls device the 3rd embodiment, in the present embodiment, with reference to Fig. 7, in cooling mode, described ambient temperature includes indoor environment temperature and outdoor environment temperature, and described computing module 200 includes:
4th computing unit 204, for calculating described compressor capacity and the product of described compressor operating frequency, obtains simple and easy circulating load after calculated product and the first preset variable being rounded；
The value of described first variable is the desired value determined according to great many of experiments, in the present embodiment, described first variable-value 100, the computing formula of described simple and easy circulating load is represented by:
Simple and easy circulating load=(compressor operating frequency × compressor capacity)/100
5th computing unit 205, for determining the value of each coefficient and variable in the 4th preset formula according to described air-conditioner power and described simple and easy circulating load, and in conjunction with described simple and easy circulating load, described indoor environment temperature, described outdoor environment temperature and the second preset aperture offset, calculate according to described 4th formula and stablize aperture；
Wherein, described 4th formula is: stablize aperture=(the 3rd coefficient × simple and easy circulating load the+the four variable) × (Quaternary system number × (indoor environment temperature-outdoor environment temperature) the+the five variable) the+the second aperture offset；Described second aperture offset is the aperture offset that air-conditioner pre-sets in cooling mode, can set value according to the actual requirements, and in the present embodiment, described second aperture offset value is-50.
The value of each coefficient and variable in described 4th formula, it is that the different situations according to described air-conditioner power and described simple and easy circulating load are obtained by great many of experiments, in the present embodiment, it is referred to table 2 and determines the value of each coefficient and variable in described 4th formula.
The 4th formula that the different air-conditioner power of table 2 is corresponding with under difference simple and easy circulating load
6th computing unit 206, for calculated described stablize aperture and the second preset value range and during more than or equal to preset second point of inflection, calculate initial opening according to the 5th preset formula, otherwise, calculate initial opening according to the 6th preset formula；
Wherein, described 5th formula is: initial opening=(stablizing aperture the+the second value range-the second point of inflection)/second flow ratio+the second point of inflection
Described 6th formula is: initial opening=stablize aperture the+the second value range, described second flow ratio is flow rate ratio preset under refrigeration mode.
Described second value range, described second point of inflection, described second flow ratio are all air-conditioner parameters in cooling mode, all can arrange a fixing value according to the characteristic of described electric expansion valve.In the present embodiment, described second value range is 150, and described second point of inflection is 180, and described second flow ratio is 5.0.
Thus just can calculating the initial opening of described electric expansion valve, described initial opening is also described electric expansion valve optimum aperture under the present circumstances, it is possible to make air-conditioner reach best heat transfer effect.
The initial opening of the electric expansion valve that the present invention proposes controls device, when air-conditioner is under refrigeration mode, according to the compressor capacity got, compressor operating frequency, indoor environment temperature, outdoor environment temperature, air-conditioner power, and preset computing formula, the optimum aperture obtaining described electric expansion valve under the present circumstances can be calculated, calculate simple and consuming time less.
Further, the initial opening proposing electric expansion valve of the present invention based on above-mentioned second embodiment or the 3rd embodiment controls device the 4th embodiment, in the present embodiment, with reference to Fig. 8, the initial opening of described electric expansion valve controls device and also includes aperture restriction module 400, and described aperture restriction module 400 includes:
Acquiring unit 401, is used for obtaining under refrigeration mode or preset initial opening minima and initial opening maximum under heating mode；
Described initial opening minima and described initial opening maximum are the values determined according to air-conditioner great many of experiments in cooling or heating mode, it is adjusted with the situation that calculated initial opening is excessive or too small, so that to initial opening do not deviate by the optimum aperture being actually needed, it is to avoid air-conditioner needs to adjust and described electric expansion valve just can be made after the long period to reach optimum aperture.
In the present embodiment, air-conditioner in cooling mode time, described initial opening minima can value be 240, and described initial opening maximum can value be 330；Air-conditioner in a heating mode time, described initial opening minima can value be 120, and described initial opening maximum can value be 290.
Judging unit 402, is used for judging that whether calculated initial opening is more than or equal to described initial opening minima and less than or equal to described initial opening maximum；
Updating block 403, for when calculated initial opening is less than described initial opening minima, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, using described initial opening maximum as described initial opening.
When calculated initial opening is less than described initial opening minima, represent that calculated initial opening is too small, now, described updating block 403 using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, represent that calculated initial opening is excessive, now, described updating block 403 using described initial opening maximum as described initial opening.
The initial opening of the electric expansion valve that the present invention proposes controls device, for calculated initial opening, one suitable span is set, namely when calculated initial opening is less than preset initial opening minima, using described initial opening minima as described initial opening, when calculated initial opening is more than preset initial opening maximum, using described initial opening maximum as described initial opening, to ensure that the initial opening obtained does not deviate by the optimum aperture being actually needed, avoid air-conditioner that described electric expansion valve after needing the adjustment long period, just can be made to reach optimum aperture.
Further, the initial opening proposing electric expansion valve of the present invention based on above-mentioned 4th embodiment controls device the 5th embodiment, and in the present embodiment, with reference to Fig. 9, in a heating mode, described aperture restriction module 400 also includes:
Adjustment unit 404, for when described outdoor environment temperature is less than preset extremely low temperature, described initial opening minima being heightened the second preset aperture, wherein, described second aperture is less than described initial opening maximum.
For air-conditioner in a heating mode time currently detected outdoor environment temperature too low in the case of, as lower than-15 DEG C, now, air-conditioner, in order to reach the heating effect specified quickly, can limit described initial opening minima and be not less than described second aperture.Wherein, described second aperture is the desired value obtained according to great many of experiments, for instance 180 apertures；Described extremely low temperature is the temperature value set according to practical situation, for instance-15 DEG C.
When air-conditioner outdoor environment temperature in a heating mode is lower than described extremely low temperature, described initial opening minima under heating mode is heightened described second aperture by the adjustment unit 404 of air-conditioner, when calculated initial opening is less than described second aperture, described updating block 403 is using the value of the described second aperture value as described initial opening.
The initial opening of the electric expansion valve that the present invention proposes controls device, for air-conditioner in a heating mode time the outdoor environment temperature that detects lower than preset extremely low temperature in the case of, preset initial opening minima is heightened appointment aperture, so that the initial opening of described electric expansion valve is unlikely to very low and affects the quick heating effect of air-conditioner.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (10)
1. the initial opening control method of an electric expansion valve, it is characterised in that the initial opening control method of described electric expansion valve includes:
Air-conditioner powers on after operation, controls electric expansion valve and first opens with the aperture set, resets afterwards, opens；
When described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture, and according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances；
Control described electric expansion valve to open to described initial opening.
2. the initial opening control method of electric expansion valve as claimed in claim 1, it is characterized in that, in a heating mode, described ambient temperature includes outdoor environment temperature, compressor capacity that described basis gets, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances and include:
Calculate described compressor capacity and the product of described compressor operating frequency, after calculated product and the first preset variable being rounded, obtain simple and easy circulating load；
The value of each coefficient and variable in the first preset formula is determined according to described air-conditioner power and described outdoor environment temperature, and in conjunction with described simple and easy circulating load, described outdoor environment temperature and the first preset aperture offset, calculate according to described first formula and stablize aperture；Wherein, described first formula is: stablize aperture=(the first coefficient × simple and easy circulating load the-the second variable) × (the second coefficient × outdoor environment temperature the+the ternary)+the first aperture offset；
Calculated described stablize aperture and the first preset value range and during more than or equal to preset first point of inflection, calculate initial opening according to the second preset formula, otherwise, calculate initial opening according to the 3rd preset formula；Wherein, described second formula is: initial opening=(stablizing aperture the+the first value range-the first point of inflection)/first flow ratio+the first point of inflection, described 3rd formula is: initial opening=stablize aperture the+the first value range, described first flow ratio is flow rate ratio preset under heating mode.
3. the initial opening control method of electric expansion valve as claimed in claim 1, it is characterized in that, in cooling mode, described ambient temperature includes indoor environment temperature and outdoor environment temperature, compressor capacity that described basis gets, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances and include:
Calculate described compressor capacity and the product of described compressor operating frequency, after calculated product and the first preset variable being rounded, obtain simple and easy circulating load；
The value of each coefficient and variable in the 4th preset formula is determined according to described air-conditioner power and described simple and easy circulating load, and in conjunction with described simple and easy circulating load, described indoor environment temperature, described outdoor environment temperature and the second preset aperture offset, calculate according to described 4th formula and stablize aperture；Wherein, described 4th formula is: stablize aperture=(the 3rd coefficient × simple and easy circulating load the+the four variable) × (Quaternary system number × (indoor environment temperature-outdoor environment temperature) the+the five variable) the+the second aperture offset；
Calculated described stablize aperture and the second preset value range and during more than or equal to preset second point of inflection, calculate initial opening according to the 5th preset formula, otherwise, calculate initial opening according to the 6th preset formula；Wherein, described 5th formula is: initial opening=(stablizing aperture the+the second value range-the second point of inflection)/second flow ratio+the second point of inflection, described 6th formula is: initial opening=stablize aperture the+the second value range, described second flow ratio is flow rate ratio preset under refrigeration mode.
4. the initial opening control method of electric expansion valve as claimed in claim 2 or claim 3, it is characterised in that the initial opening control method of described electric expansion valve also includes:
Obtain under refrigeration mode or preset initial opening minima and initial opening maximum under heating mode；
Judge that whether calculated initial opening is more than or equal to described initial opening minima and less than or equal to described initial opening maximum；
When calculated initial opening is less than described initial opening minima, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, using described initial opening maximum as described initial opening.
5. the initial opening control method of electric expansion valve as claimed in claim 4, it is characterised in that the initial opening control method of described electric expansion valve also includes:
In a heating mode, when described outdoor environment temperature is less than preset extremely low temperature, described initial opening minima being heightened the second preset aperture, wherein, described second aperture is less than described initial opening maximum.
6. the initial opening of an electric expansion valve controls device, it is characterised in that the initial opening of described electric expansion valve controls device and includes:
First controls module, powers on for air-conditioner after running, and controls electric expansion valve and first opens with the aperture set, resets afterwards, opens；When described electric expansion valve is again turned on and is opened to the first preset aperture, the aperture maintaining described electric expansion valve is described first aperture；
Computing module, for when described electric expansion valve is again turned on and is opened to the first preset aperture, according to the compressor capacity got, compressor operating frequency, ambient temperature, air-conditioner power, calculate described electric expansion valve initial opening under the present circumstances；
Second controls module, is used for controlling described electric expansion valve and opens to described initial opening.
7. the initial opening of electric expansion valve as claimed in claim 6 controls device, it is characterised in that in a heating mode, described ambient temperature includes outdoor environment temperature, and described computing module includes:
First computing unit, for calculating described compressor capacity and the product of described compressor operating frequency, obtains simple and easy circulating load after calculated product and the first preset variable being rounded；
Second computing unit, for determining the value of each coefficient and variable in the first preset formula according to described air-conditioner power and described outdoor environment temperature, and in conjunction with described simple and easy circulating load, described outdoor environment temperature and the first preset aperture offset, calculate according to described first formula and stablize aperture；Wherein, described first formula is: stablize aperture=(the first coefficient × simple and easy circulating load the-the second variable) × (the second coefficient × outdoor environment temperature the+the ternary)+the first aperture offset；
3rd computing unit, for calculated described stablize aperture and the first preset value range and during more than or equal to preset first point of inflection, calculate initial opening according to the second preset formula, otherwise, according to the 3rd preset formula calculating initial opening；Wherein, described second formula is: initial opening=(stablizing aperture the+the first value range-the first point of inflection)/first flow ratio+the first point of inflection, described 3rd formula is: initial opening=stablize aperture the+the first value range, described first flow ratio is flow rate ratio preset under heating mode.
8. the initial opening of electric expansion valve as claimed in claim 6 controls device, it is characterised in that in cooling mode, described ambient temperature includes indoor environment temperature and outdoor environment temperature, and described computing module includes:
4th computing unit, for calculating described compressor capacity and the product of described compressor operating frequency, obtains simple and easy circulating load after calculated product and the first preset variable being rounded；
5th computing unit, for determining the value of each coefficient and variable in the 4th preset formula according to described air-conditioner power and described simple and easy circulating load, and in conjunction with described simple and easy circulating load, described indoor environment temperature, described outdoor environment temperature and the second preset aperture offset, calculate according to described 4th formula and stablize aperture；Wherein, described 4th formula is: stablize aperture=(the 3rd coefficient × simple and easy circulating load the+the four variable) × (Quaternary system number × (indoor environment temperature-outdoor environment temperature) the+the five variable) the+the second aperture offset；
6th computing unit, for calculated described stablize aperture and the second preset value range and during more than or equal to preset second point of inflection, calculate initial opening according to the 5th preset formula, otherwise, according to the 6th preset formula calculating initial opening；Wherein, described 5th formula is: initial opening=(stablizing aperture the+the second value range-the second point of inflection)/second flow ratio+the second point of inflection, described 6th formula is: initial opening=stablize aperture the+the second value range, described second flow ratio is flow rate ratio preset under refrigeration mode.
9. the initial opening of electric expansion valve controls device as claimed in claim 7 or 8, it is characterised in that the initial opening of described electric expansion valve controls device and also includes aperture restriction module, and described aperture restriction module includes:
Acquiring unit, is used for obtaining under refrigeration mode or preset initial opening minima and initial opening maximum under heating mode；
Judging unit, is used for judging that whether calculated initial opening is more than or equal to described initial opening minima and less than or equal to described initial opening maximum；
Updating block, for when calculated initial opening is less than described initial opening minima, using described initial opening minima as described initial opening；When calculated initial opening is more than described initial opening maximum, using described initial opening maximum as described initial opening.
10. the initial opening of electric expansion valve as claimed in claim 9 controls device, it is characterised in that in a heating mode, and described aperture restriction module also includes:
Adjustment unit, for when described outdoor environment temperature is less than preset extremely low temperature, described initial opening minima being heightened the second preset aperture, wherein, described second aperture is less than described initial opening maximum.
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