CN106016596A - Air conditioner and control method of electronic expansion valve of air conditioner - Google Patents
Air conditioner and control method of electronic expansion valve of air conditioner Download PDFInfo
- Publication number
- CN106016596A CN106016596A CN201610348407.2A CN201610348407A CN106016596A CN 106016596 A CN106016596 A CN 106016596A CN 201610348407 A CN201610348407 A CN 201610348407A CN 106016596 A CN106016596 A CN 106016596A
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- Prior art keywords
- expansion valve
- exhaust temperature
- running frequency
- aperture
- compressor
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000007613 environmental effect Effects 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 241000208340 Araliaceae Species 0.000 claims description 5
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 5
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 5
- 235000008434 ginseng Nutrition 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 25
- 230000000694 effects Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- 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
Abstract
The invention discloses a control method of an electronic expansion valve of an air conditioner. The control method comprises the steps that when the air conditioner is started, object running frequency of a compressor is determined; current first running frequency of the compressor is acquired, and when the first running frequency fails to reach the object running frequency, an opening value corresponding to the first running frequency is determined according to the correspondence between the preset running frequency and the opening value of the electronic expansion valve; and the opening value of the electronic expansion value is adjusted to the determined opening value, wherein in the correspondence, the lower the preset running frequency is, the lower the opening value corresponding to the running frequency is. The invention further discloses the air conditioner. The opening of the electronic expansion valve can not be too big at the initial starting stage of the compressor, so that a situation that refrigerant air flow sound appears at the initial starting stage of the compressor is avoided effectively, the noise at the initial starting stage of the air conditioner is reduced, and the comfortable feeling of a user using the air conditioner is improved.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly relate to the control method of a kind of air conditioner electronic expansion valve
And air-conditioner.
Background technology
In air-conditioner, electric expansion valve is generally set between indoor heat exchanger and outdoor heat exchanger, and
The aperture of electric expansion valve is controlled in air-conditioner running.In prior art, at the beginning of air-conditioner starts
In phase, i.e. period before compressor operating frequency reaches target frequency, typically can be by electric expansion valve
Aperture adjust to default opening value, until after compressor operating frequency reaches target frequency, just can root
Delivery temperature according to compressor controls the aperture of electric expansion valve.Due in air-conditioner initial start stage, compression
Machine running frequency is less, when the aperture of electric expansion valve is bigger, it is easy to produce coolant air-flow sound, shadow
Ring comfortableness when user uses air-conditioning.
Summary of the invention
Present invention is primarily targeted at control method and the air-conditioner that a kind of air conditioner electronic expansion valve is provided,
Aim to solve the problem that the technical problem easily producing coolant air-flow sound in air-conditioner initial start stage.
The control method of the air conditioner electronic expansion valve that the present invention provides includes:
When air-conditioner starts, determine the target operating frequency of compressor；
Obtain the first running frequency that described compressor is current, the most described in described first running frequency
During target operating frequency, according to the corresponding relation of default running frequency Yu the opening value of electric expansion valve,
Determine the opening value that described first running frequency is corresponding；
The aperture of electric expansion valve is adjusted to the described opening value determined；
Wherein, in described corresponding relation, described default running frequency is the least, the opening value of its correspondence
The least.
Preferably, the control method of described air conditioner electronic expansion valve also includes:
After described compressor reaches described target operating frequency stable operation, obtain described compressor and work as
Front first exhaust temperature and the second current running frequency, and determine corresponding with described second running frequency
Target exhaust temperature；
When described first exhaust temperature is more than described target exhaust temperature, obtain current environmental temperature, and
According to the corresponding relation between default ambient temperature, running frequency and noise critical angle value, determine with
The noise critical angle value that current environmental temperature is corresponding with described second running frequency；
Adjust the aperture of described electric expansion valve, make the opening value after adjustment face less than or equal to described noise
Boundary's opening value.
Preferably, the control method of described air conditioner electronic expansion valve also includes:
When described compressor reaches described target operating frequency, determine with described according to described corresponding relation
The reference opening value that target operating frequency is corresponding, and the aperture of described electric expansion valve is adjusted to described ginseng
Examine opening value；
After described compressor stable operation, obtain the current first exhaust temperature of described compressor with current
The second running frequency, and determine the target exhaust temperature corresponding with described second running frequency；
When described first exhaust temperature is more than described target exhaust temperature, obtain current environmental temperature, and
According to the corresponding relation between default ambient temperature, running frequency and aperture correction value, determine with currently
The aperture correction value that ambient temperature is corresponding with current operation frequency；
The aperture of described electric expansion valve is regulated according to the described aperture correction value determined.
Preferably, the first exhaust temperature and current second that the described compressor of described acquisition is current runs frequency
Rate, and after determining the step of the target exhaust temperature corresponding with described second running frequency, also include:
When described first exhaust temperature is less than described target exhaust temperature, by opening of described electric expansion valve
Degree is turned down, until the aperture of described electric expansion valve reaches to preset minimum aperture or described first exhaust temperature
Reach described target exhaust temperature.
Preferably, after described compressor stable operation and adjust described electric expansion valve aperture after,
Also include:
When adjusting interval preset duration after the aperture of described electric expansion valve, obtain described compressor and work as
Front second exhaust temperature；
When described second exhaust temperature is more than described target exhaust temperature, reduce the operation of described compressor
Frequency.
Additionally, the air-conditioner that the present invention provides includes compressor, electric expansion valve and controller, described control
Device processed includes determining module, acquisition module and adjusting module；
Described determine that module is for when air-conditioner starts, determining the target operating frequency of compressor；
Described acquisition module, for obtaining the first running frequency that described compressor is current, described determines module
It is additionally operable to when described first running frequency is not up to described target operating frequency, according to default operation frequency
Rate and the corresponding relation of the opening value of electric expansion valve, determine the opening value that described first running frequency is corresponding；
Described adjusting module is for adjusting the aperture of electric expansion valve to the described opening value determined；
Wherein, in described corresponding relation, described default running frequency is the least, the opening value of its correspondence
The least.
Preferably, described acquisition module is additionally operable to reach described target operating frequency the most surely at described compressor
After fixed operation, obtain the current first exhaust temperature of described compressor and the second current running frequency, institute
State and determine that module is additionally operable to determine the target exhaust temperature corresponding with described second running frequency；
Described acquisition module is additionally operable to, when described first exhaust temperature is more than described target exhaust temperature, obtain
Take current environmental temperature, described determine that module is additionally operable to according to the ambient temperature preset, running frequency and makes an uproar
Corresponding relation between sound critical angle value, determines and current environmental temperature and described second running frequency pair
The noise critical angle value answered；
Described adjusting module is additionally operable to adjust the aperture of described electric expansion valve, makes the opening value after adjustment little
In or equal to described noise critical angle value.
Preferably, described determine that module is additionally operable to when described compressor reaches described target operating frequency,
The reference opening value corresponding with described target operating frequency, described adjustment mould is determined according to described corresponding relation
Block is additionally operable to the aperture of described electric expansion valve be adjusted to described with reference to opening value；
Described acquisition module is additionally operable to, after described compressor stable operation, obtain described compressor current
First exhaust temperature and the second current running frequency, described determine that module is additionally operable to determine and described second
The target exhaust temperature that running frequency is corresponding；
Described acquisition module is additionally operable to, when described first exhaust temperature is more than described target exhaust temperature, obtain
Take current environmental temperature, described determine that module is additionally operable to according to the ambient temperature preset, running frequency and opens
Corresponding relation between degree correction value, determines the aperture corresponding with current environmental temperature and current operation frequency
Correction value；
Described adjusting module is additionally operable to regulate described electric expansion valve according to the described aperture correction value determined
Aperture.
Preferably, described adjusting module is additionally operable in described first exhaust temperature less than described target exhaust temperature
When spending, the aperture of described electric expansion valve is turned down, until the aperture of described electric expansion valve reaches default
Minimum aperture or described first exhaust temperature reach described target exhaust temperature.
Preferably, described acquisition module is additionally operable to after adjusting the aperture of described electric expansion valve be spaced in advance
If during duration, obtain the second exhaust temperature that described compressor is current；
Described adjusting module is additionally operable to when described second exhaust temperature is more than described target exhaust temperature, fall
The running frequency of low described compressor.
The control method of the air conditioner electronic expansion valve that the present invention provides and air-conditioner, by starting at air-conditioner
Time, determine the target operating frequency of compressor, and obtain the first running frequency that described compressor is current,
When described first running frequency is not up to described target operating frequency, according to default running frequency and electricity
The corresponding relation of the opening value of sub-expansion valve, determines the opening value that described first running frequency is corresponding, and will
The aperture of electric expansion valve adjusts to the described opening value determined, owing to described running frequency is the least, it is right
The opening value answered is the least, and therefore the aperture of electric expansion valve will not occur excessive at the compressor start initial stage
Situation, efficiently avoid and coolant air-flow sound occur at the compressor start initial stage, reduces air-conditioner and starts
The noise at initial stage, improves comfortableness when user uses air-conditioner.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the control method first embodiment of air conditioner electronic expansion valve of the present invention；
Fig. 2 is the high-level schematic functional block diagram of air-conditioner first embodiment middle controller of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides the control method of a kind of air conditioner electronic expansion valve, is that the present invention is empty with reference to Fig. 1, Fig. 1
Adjust the schematic flow sheet of the control method first embodiment of electric expansion valve, the air conditioner electronic that the present invention proposes
The control method of expansion valve comprises the following steps:
Step S10, when air-conditioner starts, determines the target operating frequency of compressor；
In the present embodiment, operational factor when target operating frequency can start according to air-conditioner determines,
For example, it is possible to determine according to the target temperature of user's setting.Or can also be simultaneously according to current indoor
The parameter determinations such as initial temperature.Determining that target operating frequency is prior art, concrete mode does not limits at this
Fixed.
Air-conditioning is when not actuated, and the running frequency of its compressor is zero.After starting of air conditioner, its compressor
Running frequency will be gradually risen to target operating frequency by zero.This process is properly termed as compressor start
Initial stage.
Step S20, obtains the first running frequency that described compressor is current, in described first running frequency not
When reaching described target operating frequency, right according to default running frequency and the opening value of electric expansion valve
Should be related to, determine the opening value that described first running frequency is corresponding；
Step S30, adjusts the aperture of electric expansion valve to the described opening value determined；Wherein, described
In corresponding relation, described default running frequency is the least, and the opening value of its correspondence is the least.
In the present embodiment, when described first running frequency miss the mark running frequency, it is compressor
It is in the initial start stage stage.
Optionally, in compressor start initial stage, can in real time or determination first running frequency of timing,
And determine the opening value that the first running frequency is corresponding, and the aperture adjusting electric expansion valve in real time or regularly.
The running frequency preset can be configured according to actual needs with the corresponding relation of opening value, permissible
Rule of thumb set above-mentioned corresponding relation, and ensure that at compressor with a certain operation in corresponding relation
When frequency is run, if the aperture of electric expansion valve adjusts to corresponding with this running frequency opening value, empty
Adjust device will not produce coolant air-flow sound.Such as, for the air-conditioner of frequency conversion 1.5, in above-mentioned corresponding relation
Preset opening value may range from 120 steps to 160 steps.
Optionally, corresponding relation can also be relationship below:
P=((F-Fmin)*(S-Pmin)/(Fmax-Fmin)+Px。
Wherein, P is the opening value of electric expansion valve；F is the running frequency that compressor is current, is above-mentioned
First running frequency；FminMinimum running frequency for compressor fast-refrigerating/heat；FmaxFast for compressor
The maximum frequency of operation of speed refrigerating/heating；PminOpen for the minimum of electric expansion valve during air-conditioner refrigerating/heating
Degree；The correction factor of electronic expansion valve opening when S is refrigerating/heating；PxOther correction factors for aperture.
Such as, Px=P1+T1+T2, wherein, P1 can be opening of air-conditioner initial start stage electric expansion valve
Degree；T1 is the aperture correction factor under ambient temperature；T2 is the aperture correction factor under aerofluxus.
Wherein, Fmax, Fmin, P1, Pmin are test value, and T1, T2, S can be by examinations
Test calculating to obtain.
Optionally, when air-conditioner starts, such as, when air-conditioner controller receives start-up command, first
The aperture of electric expansion valve is adjusted the maximum opening value to electric expansion valve, performs above-mentioned steps the most again
S20.Owing to the electric expansion valve of different manufacturers is when dispatching from the factory, its initial opening may be inconsistent, therefore may be used
Can cause, during the follow-up regulation to electronic expansion valve opening, error occurs, therefore, the present embodiment
In, first when start, the aperture of electric expansion valve is initialized to maximum opening, thus easily facilitate follow-up
Adjustment to the aperture of electric expansion valve, improves the accuracy to electronic expansion valve opening regulation.
The control method of the air conditioner electronic expansion valve that the present invention provides, by when air-conditioner starts, determining
The target operating frequency of compressor, and obtain the first running frequency that described compressor is current, described
When one running frequency is not up to described target operating frequency, according to default running frequency and electric expansion valve
The corresponding relation of opening value, determine the opening value that described first running frequency is corresponding, and by electronic expansion
The aperture of valve adjusts to the described opening value determined, owing to described running frequency is the least, the aperture of its correspondence
Being worth the least, therefore will not there is excessive situation at the compressor start initial stage in the aperture of electric expansion valve, has
Avoid to effect, at the compressor start initial stage, coolant air-flow sound occurs, reduce making an uproar of air-conditioner initial start stage
Sound, improves comfortableness when user uses air-conditioner.
Further, the first embodiment of control method based on air conditioner electronic expansion valve of the present invention, this
Second embodiment of the bright control method that also proposed air conditioner electronic expansion valve, described air conditioner electronic expansion valve
Control method also include:
After described compressor reaches described target operating frequency stable operation, obtain described compressor and work as
Front first exhaust temperature and the second current running frequency, and determine corresponding with described second running frequency
Target exhaust temperature；
When described first exhaust temperature is more than described target exhaust temperature, obtain current environmental temperature, and
According to the corresponding relation between default ambient temperature, running frequency and noise critical angle value, determine with
The noise critical angle value that current environmental temperature is corresponding with described second running frequency；
Adjust the aperture of described electric expansion valve, make the opening value after adjustment face less than or equal to described noise
Boundary's opening value.
In the present embodiment, start timing when compressor reaches target operating frequency, be up to when timing
During to preset duration, then it is believed that compressor stable operation.According to experimental result, with 1.5 skies of frequency conversion
As a example by adjusting device, when ambient temperature is higher than 28 DEG C or is less than 10 DEG C, air-conditioner just can run high frequency, other feelings
Condition is typically all in intermediate frequency or low frequency, therefore to described object run from compressor start to compressor operating
Behind after frequency 5 to 10 minutes, air-conditioner system is internal basicly stable.Therefore, for 1.5 skies of frequency conversion
Adjust for device, preset duration be set to 5 to 10 minutes proper.In preset duration, electronic expansion
The aperture of valve keeps constant.After reaching preset duration, then start to obtain first that described compressor is current
Delivery temperature and the second current running frequency, and determine the target row corresponding with described second running frequency
Temperature.
In the present embodiment, after compressor stable operation, its second current running frequency is not likely to be
Described target operating frequency, it is therefore desirable to reacquire current running frequency.The running frequency of compressor
Can rule of thumb be configured with the corresponding relation of target exhaust temperature, this target exhaust temperature is at this
Optimum delivery temperature under running frequency.
Target exhaust temperature can be a numerical value.
Preferably, target exhaust temperature can also be a temperature range.In first exhaust temperature more than this temperature
When spending the interval upper limit, then it is assumed that first exhaust temperature is more than described target exhaust temperature.Otherwise,
When one delivery temperature is less than the lower limit of this temperature range, then it is assumed that first exhaust temperature is arranged less than described target
Temperature.
In corresponding relation between default ambient temperature, running frequency and noise critical angle value, make an uproar
Sound critical angle value is under the ambient temperature, running frequency of its correspondence, and air-conditioner produces coolant air-flow sound
Maximum opening before.Under this ambient temperature, running frequency, if the aperture of electric expansion valve is more than right
During the noise critical angle answered, then air-conditioner will produce coolant air-flow sound.
In the present embodiment, after compressor stable operation, if the delivery temperature of compressor is more than target exhaust
Temperature, then show that the aperture of the electric expansion valve under current environmental temperature and running frequency can not meet
Target exhaust temperature under current operation frequency, it is therefore desirable to the aperture of electric expansion valve is increased.Adjusting
When saving the aperture of electric expansion valve, determine that the noise of correspondence is critical according to ambient temperature, running frequency and open
Angle value, and control the opening value after electric expansion valve adjusts less than or equal to described noise critical angle value,
Thus efficiently avoid generation coolant air-flow sound after air-conditioner stable operation.Additionally, avoiding generation
While coolant air-flow sound, it is also possible to according to compressor exhaust temperature, the aperture of electric expansion valve is fitted
Work as regulation, thus take into account the heat transfer effect of air-conditioner simultaneously.
Further, the first embodiment of control method based on air conditioner electronic expansion valve of the present invention, this
3rd embodiment of the bright control method that also proposed air conditioner electronic expansion valve, described air conditioner electronic expansion valve
Control method also include:
When described compressor reaches described target operating frequency, determine with described according to described corresponding relation
The reference opening value that target operating frequency is corresponding, and the aperture of described electric expansion valve is adjusted to described ginseng
Examine opening value；
After described compressor stable operation, obtain the current first exhaust temperature of described compressor with current
The second running frequency, and determine the target exhaust temperature corresponding with described second running frequency；
When described first exhaust temperature is more than described target exhaust temperature, obtain current environmental temperature, and
According to the corresponding relation between default ambient temperature, running frequency and aperture correction value, determine with currently
The aperture correction value that ambient temperature is corresponding with current operation frequency；
The aperture of described electric expansion valve is regulated according to the described aperture correction value determined.
The detailed description of the invention of the present embodiment is referred to above-mentioned second embodiment, and the present embodiment and second is in fact
Execute unlike example, when compressor reaches target operating frequency, first according to the running frequency preset and electricity
The corresponding relation of the opening value of sub-expansion valve, determines the reference opening value corresponding with described target operating frequency,
And the aperture of described electric expansion valve is adjusted to described with reference to opening value.Start timing the most again, at meter
Long when reaching preset duration constantly, then it is believed that compressor stable operation.During timing, electronics is swollen
It is constant that the aperture of swollen valve remains at the described reference opening value determined.
The present embodiment and the second embodiment different also have, according to default ambient temperature, running frequency with
Corresponding relation between aperture correction value, determines open corresponding with current environmental temperature and current operation frequency
Degree correction value, and the aperture of described electric expansion valve is regulated according to the described aperture correction value determined.
In corresponding relation between default ambient temperature, running frequency and aperture correction value, with reference to opening
Angle value is under its corresponding ambient temperature, running frequency with aperture correction value sum, and air-conditioner produces cold
Maximum opening before gas fluid sound.Under this ambient temperature, running frequency, if the opening of electric expansion valve
When degree is more than corresponding reference opening value and aperture correction value sum, then air-conditioner will produce coolant air-flow
Sound.
Aperture correction value can be obtained by test.Such as, by experimental test effect, at a certain environment
Under temperature, running frequency, aperture correction value is 48, then the aperture after electric expansion valve adjusts is at this ring
Reference opening value under border temperature, running frequency and aperture correction value 48 sum.
The aperture of electric expansion valve, when compressor reaches target operating frequency, is adjusted to ginseng by the present embodiment
Examine opening value, and be always maintained at until after compressor temperature runs, then determine and current environmental temperature, fortune
The aperture correction value that line frequency is corresponding, and the aperture of electric expansion valve is adjusted on the basis of with reference to opening value
Whole aperture correction value, thus easily facilitate the adjustment of the aperture to electric expansion valve, improve electronics swollen
The accuracy of swollen valve opening regulation.Additionally, while avoiding producing coolant air-flow sound, it is also possible to according to
The aperture of electric expansion valve is suitably regulated by compressor exhaust temperature, thus has taken into account air-conditioner simultaneously
Heat transfer effect.
Further, the second or third embodiments of control method based on air conditioner electronic expansion valve of the present invention,
The invention allows for the 4th embodiment of the control method of air conditioner electronic expansion valve, the described pressure of described acquisition
First exhaust temperature that contracting machine is current and the second current running frequency, and determine and described second run frequency
After the step of the target exhaust temperature that rate is corresponding, also include:
When described first exhaust temperature is less than described target exhaust temperature, by opening of described electric expansion valve
Degree is turned down, until the aperture of described electric expansion valve reaches to preset minimum aperture or described first exhaust temperature
Reach described target exhaust temperature.
In the present embodiment, when described first exhaust temperature is less than described target exhaust temperature, show to work as
The aperture of front electric expansion valve is excessive, the exchange capability of heat that air-conditioner is current can be produced impact.Therefore,
According to certain speed, the aperture of electric expansion valve can be turned down, during regulation, constantly examine
Survey whether first exhaust temperature arrives target exhaust temperature, when reaching, then stop electric expansion valve
The regulation of aperture, and keep current aperture to run.It is understood that during regulation, if electric
When the aperture of sub-expansion valve reaches to preset minimum aperture, first exhaust temperature is still not reaching to target exhaust
Temperature, the most also stops the regulation to electronic expansion valve opening.
Above-mentioned default minimum aperture is the minimum aperture of electric expansion valve, can define by producer when dispatching from the factory.
Optionally, target exhaust temperature is a temperature range, is in this temperature range in first exhaust temperature
Within time, then it is assumed that first exhaust temperature has reached target exhaust temperature.
The present embodiment passes through when first exhaust temperature is less than target exhaust temperature, opening electric expansion valve
Degree is turned down, thus while avoiding producing coolant air-flow sound, has also taken into account the heat transfer effect of air-conditioner.
Further, the second or third embodiments of control method based on air conditioner electronic expansion valve of the present invention,
The invention allows for the 5th embodiment of the control method of air conditioner electronic expansion valve, steady at described compressor
Fixed run after and adjust described electric expansion valve aperture after, also include:
When adjusting interval preset duration after the aperture of described electric expansion valve, obtain described compressor and work as
Front second exhaust temperature；
When described second exhaust temperature is more than described target exhaust temperature, reduce the operation of described compressor
Frequency.
In the present embodiment, the size of preset duration can be configured according to actual needs, does not makees at this
Limit.
If after compressor stable operation, owing to the first exhaust temperature obtained is more than target exhaust temperature,
Therefore the aperture of electric expansion valve is adjusted, after the preset duration of interval, the second row temperature of acquisition
Degree is still above target exhaust temperature, then showing cannot be by regulation on the premise of producing coolant air-flow sound
The aperture of electric expansion valve makes first exhaust temperature reach the temperature range that target exhaust temperature is corresponding
In, therefore can reduce the delivery temperature of compressor by the way of reducing the running frequency of compressor.
Optionally, after the running frequency reducing compressor, during the preset duration of interval, can again obtain
The 3rd delivery temperature that compressor is current is if the 3rd delivery temperature is less than target exhaust temperature, the most permissible
Rise the running frequency of high compressor so that the normal heat exchange of air-conditioner, avoid the same of generation coolant air-flow sound
Time, take into account the heat transfer effect of air-conditioner further.
The present invention further provides a kind of air-conditioner.It is that air-conditioner of the present invention first is implemented with reference to Fig. 2, Fig. 2
The high-level schematic functional block diagram of example middle controller, the air-conditioner that the present invention provides includes compressor, electronic expansion
Valve and controller 100, described controller 100 includes determining module 110, acquisition module 120 and adjusting mould
Block 130；
Described determine that module 110 is for when air-conditioner starts, determining the target operating frequency of compressor；
In the present embodiment, operational factor when target operating frequency can start according to air-conditioner determines,
For example, it is possible to determine according to the target temperature of user's setting.Or can also be simultaneously according to current indoor
The parameter determinations such as initial temperature.Determining that target operating frequency is prior art, concrete mode does not limits at this
Fixed.
Air-conditioning is when not actuated, and the running frequency of its compressor is zero.After starting of air conditioner, its compressor
Running frequency will be gradually risen to target operating frequency by zero.This process is properly termed as compressor start
Initial stage.
Described acquisition module 120, for obtaining the first running frequency that described compressor is current, described determines
Module 110 is additionally operable to when described first running frequency is not up to described target operating frequency, according to presetting
The corresponding relation of opening value of running frequency and electric expansion valve, determine that described first running frequency is corresponding
Opening value；
Described adjusting module 130 is for adjusting the aperture of electric expansion valve to the described opening value determined；
Wherein, in described corresponding relation, described default running frequency is the least, the opening value of its correspondence
The least.
In the present embodiment, when described first running frequency miss the mark running frequency, it is compressor
It is in the initial start stage stage.
Optionally, in compressor start initial stage, can in real time or determination first running frequency of timing,
And determine the opening value that the first running frequency is corresponding, and the aperture adjusting electric expansion valve in real time or regularly.
The running frequency preset can be configured according to actual needs with the corresponding relation of opening value, permissible
Rule of thumb set above-mentioned corresponding relation, and ensure that at compressor with a certain operation in corresponding relation
When frequency is run, if the aperture of electric expansion valve adjusts to corresponding with this running frequency opening value, empty
Adjust device will not produce coolant air-flow sound.Such as, for the air-conditioner of frequency conversion 1.5, in above-mentioned corresponding relation
Preset opening value may range from 120 steps to 160 steps.
Optionally, corresponding relation can also be relationship below:
P=((F-Fmin)*(S-Pmin)/(Fmax-Fmin)+Px。
Wherein, P is the opening value of electric expansion valve；F is the running frequency that compressor is current, is above-mentioned
First running frequency；FminMinimum running frequency for compressor fast-refrigerating/heat；FmaxFast for compressor
The maximum frequency of operation of speed refrigerating/heating；PminOpen for the minimum of electric expansion valve during air-conditioner refrigerating/heating
Degree；The correction factor of electronic expansion valve opening when S is refrigerating/heating；PxOther correction factors for aperture.
Such as, Px=P1+T1+T2, wherein, P1 can be opening of air-conditioner initial start stage electric expansion valve
Degree；T1 is the aperture correction factor under ambient temperature；T2 is the aperture correction factor under aerofluxus.
Wherein, Fmax, Fmin, P1, Pmin are test value, and T1, T2, S can be by examinations
Test calculating to obtain.
Optionally, when air-conditioner starts, such as, when air-conditioner controller receives start-up command, first
The aperture of electric expansion valve is adjusted the maximum opening value to electric expansion valve, performs above-mentioned steps the most again
S20.Owing to the electric expansion valve of different manufacturers is when dispatching from the factory, its initial opening may be inconsistent, therefore may be used
Can cause, during the follow-up regulation to electronic expansion valve opening, error occurs, therefore, the present embodiment
In, first when start, the aperture of electric expansion valve is initialized to maximum opening, thus easily facilitate follow-up
Adjustment to the aperture of electric expansion valve, improves the accuracy to electronic expansion valve opening regulation.
The air-conditioner that the present invention provides, by when air-conditioner starts, determines the object run frequency of compressor
Rate, and obtain the first running frequency that described compressor is current, it is not up to institute in described first running frequency
When stating target operating frequency, according to the corresponding relation of default running frequency Yu the opening value of electric expansion valve,
Determine the opening value that described first running frequency is corresponding, and the aperture of electric expansion valve is adjusted to determining
Described opening value, owing to described running frequency is the least, the opening value of its correspondence is the least, therefore electronic expansion
Will not there is excessive situation at the compressor start initial stage in the aperture of valve, efficiently avoid and opens at compressor
There is coolant air-flow sound in the dynamic initial stage, reduces the noise of air-conditioner initial start stage, improves user and uses sky
Adjust comfortableness during device.
Further, first embodiment based on air-conditioner of the present invention, the invention allows for air-conditioner
Second embodiment, described acquisition module 120 is additionally operable to reach described target operating frequency at described compressor
And after stable operation, obtain the current first exhaust temperature of described compressor and the second current running frequency,
Described determine that module 110 is additionally operable to determine the target exhaust temperature corresponding with described second running frequency；
Described acquisition module 120 is additionally operable to when described first exhaust temperature is more than described target exhaust temperature,
Obtain current environmental temperature, described determine module 110 be additionally operable to according to preset ambient temperature, run frequency
Corresponding relation between rate and noise critical angle value, determines and runs with current environmental temperature and described second
The noise critical angle value that frequency is corresponding；
Described adjusting module 130 is additionally operable to adjust the aperture of described electric expansion valve, makes the aperture after adjustment
Value is less than or equal to described noise critical angle value.
In the present embodiment, start timing when compressor reaches target operating frequency, be up to when timing
During to preset duration, then it is believed that compressor stable operation.According to experimental result, with 1.5 skies of frequency conversion
As a example by adjusting device, when ambient temperature is higher than 28 DEG C or is less than 10 DEG C, air-conditioner just can run high frequency, other feelings
Condition is typically all in intermediate frequency or low frequency, therefore to described object run from compressor start to compressor operating
Behind after frequency 5 to 10 minutes, air-conditioner system is internal basicly stable.Therefore, for 1.5 skies of frequency conversion
Adjust for device, preset duration be set to 5 to 10 minutes proper.In preset duration, electronic expansion
The aperture of valve keeps constant.After reaching preset duration, then start to obtain first that described compressor is current
Delivery temperature and the second current running frequency, and determine the target row corresponding with described second running frequency
Temperature.
In the present embodiment, after compressor stable operation, its second current running frequency is not likely to be
Described target operating frequency, it is therefore desirable to reacquire current running frequency.The running frequency of compressor
Can rule of thumb be configured with the corresponding relation of target exhaust temperature, this target exhaust temperature is at this
Optimum delivery temperature under running frequency.
Target exhaust temperature can be a numerical value.
Preferably, target exhaust temperature can also be a temperature range.In first exhaust temperature more than this temperature
When spending the interval upper limit, then it is assumed that first exhaust temperature is more than described target exhaust temperature.Otherwise,
When one delivery temperature is less than the lower limit of this temperature range, then it is assumed that first exhaust temperature is arranged less than described target
Temperature.
In corresponding relation between default ambient temperature, running frequency and noise critical angle value, make an uproar
Sound critical angle value is under the ambient temperature, running frequency of its correspondence, and air-conditioner produces coolant air-flow sound
Maximum opening before.Under this ambient temperature, running frequency, if the aperture of electric expansion valve is more than right
During the noise critical angle answered, then air-conditioner will produce coolant air-flow sound.
In the present embodiment, after compressor stable operation, if the delivery temperature of compressor is more than target exhaust
Temperature, then show that the aperture of the electric expansion valve under current environmental temperature and running frequency can not meet
Target exhaust temperature under current operation frequency, it is therefore desirable to the aperture of electric expansion valve is increased.Adjusting
When saving the aperture of electric expansion valve, determine that the noise of correspondence is critical according to ambient temperature, running frequency and open
Angle value, and control the opening value after electric expansion valve adjusts less than or equal to described noise critical angle value,
Thus efficiently avoid generation coolant air-flow sound after air-conditioner stable operation.Additionally, avoiding generation
While coolant air-flow sound, it is also possible to according to compressor exhaust temperature, the aperture of electric expansion valve is fitted
Work as regulation, thus take into account the heat transfer effect of air-conditioner simultaneously.
Further, first embodiment based on air-conditioner of the present invention, the invention allows for air-conditioner
3rd embodiment, described determines module 110 to be additionally operable at described compressor to reach described target operating frequency
Time, determine the reference opening value corresponding with described target operating frequency, described tune according to described corresponding relation
Mould preparation block 130 is additionally operable to the aperture of described electric expansion valve be adjusted to described with reference to opening value；
Described acquisition module 120 is additionally operable to after described compressor stable operation, obtains described compressor and works as
Before first exhaust temperature and the second current running frequency, described determine module 110 be additionally operable to determine with
The target exhaust temperature that described second running frequency is corresponding；
Described acquisition module 120 is additionally operable to when described first exhaust temperature is more than described target exhaust temperature,
Obtain current environmental temperature, described determine module 110 be additionally operable to according to preset ambient temperature, run frequency
Corresponding relation between rate and aperture correction value, determines corresponding with current environmental temperature and current operation frequency
Aperture correction value；
Described adjusting module 130 is additionally operable to regulate described electronic expansion according to the described aperture correction value determined
The aperture of valve.
The detailed description of the invention of the present embodiment is referred to above-mentioned second embodiment, and the present embodiment and second is in fact
Execute unlike example, when compressor reaches target operating frequency, first according to the running frequency preset and electricity
The corresponding relation of the opening value of sub-expansion valve, determines the reference opening value corresponding with described target operating frequency,
And the aperture of described electric expansion valve is adjusted to described with reference to opening value.Start timing the most again, at meter
Long when reaching preset duration constantly, then it is believed that compressor stable operation.During timing, electronics is swollen
It is constant that the aperture of swollen valve remains at the described reference opening value determined.
The present embodiment and the second embodiment different also have, according to default ambient temperature, running frequency with
Corresponding relation between aperture correction value, determines open corresponding with current environmental temperature and current operation frequency
Degree correction value, and the aperture of described electric expansion valve is regulated according to the described aperture correction value determined.
In corresponding relation between default ambient temperature, running frequency and aperture correction value, with reference to opening
Angle value is under its corresponding ambient temperature, running frequency with aperture correction value sum, and air-conditioner produces cold
Maximum opening before gas fluid sound.Under this ambient temperature, running frequency, if the opening of electric expansion valve
When degree is more than corresponding reference opening value and aperture correction value sum, then air-conditioner will produce coolant air-flow
Sound.
Aperture correction value can be obtained by test.Such as, by experimental test effect, at a certain environment
Under temperature, running frequency, aperture correction value is 48, then the aperture after electric expansion valve adjusts is at this ring
Reference opening value under border temperature, running frequency and aperture correction value 48 sum.
The aperture of electric expansion valve, when compressor reaches target operating frequency, is adjusted to ginseng by the present embodiment
Examine opening value, and be always maintained at until after compressor temperature runs, then determine and current environmental temperature, fortune
The aperture correction value that line frequency is corresponding, and the aperture of electric expansion valve is adjusted on the basis of with reference to opening value
Whole aperture correction value, thus easily facilitate the adjustment of the aperture to electric expansion valve, improve electronics swollen
The accuracy of swollen valve opening regulation.Additionally, while avoiding producing coolant air-flow sound, it is also possible to according to
The aperture of electric expansion valve is suitably regulated by compressor exhaust temperature, thus has taken into account air-conditioner simultaneously
Heat transfer effect.
Further, second or third embodiments based on air-conditioner of the present invention, the invention allows for sky
Adjusting the 4th embodiment of device, described adjusting module 130 is additionally operable in described first exhaust temperature less than described
During target exhaust temperature, the aperture of described electric expansion valve is turned down, until the opening of described electric expansion valve
Degree reaches to preset minimum aperture or described first exhaust temperature reaches described target exhaust temperature.
In the present embodiment, when described first exhaust temperature is less than described target exhaust temperature, show to work as
The aperture of front electric expansion valve is excessive, the exchange capability of heat that air-conditioner is current can be produced impact.Therefore,
According to certain speed, the aperture of electric expansion valve can be turned down, during regulation, constantly examine
Survey whether first exhaust temperature arrives target exhaust temperature, when reaching, then stop electric expansion valve
The regulation of aperture, and keep current aperture to run.It is understood that during regulation, if electric
When the aperture of sub-expansion valve reaches to preset minimum aperture, first exhaust temperature is still not reaching to target exhaust
Temperature, the most also stops the regulation to electronic expansion valve opening.
Above-mentioned default minimum aperture is the minimum aperture of electric expansion valve, can define by producer when dispatching from the factory.
Optionally, target exhaust temperature is a temperature range, is in this temperature range in first exhaust temperature
Within time, then it is assumed that first exhaust temperature has reached target exhaust temperature.
The present embodiment passes through when first exhaust temperature is less than target exhaust temperature, opening electric expansion valve
Degree is turned down, thus while avoiding producing coolant air-flow sound, has also taken into account the heat transfer effect of air-conditioner.
Further, second or third embodiments based on air-conditioner of the present invention, the invention allows for sky
Adjusting the 5th embodiment of device, described acquisition module 120 is additionally operable in the aperture adjusting described electric expansion valve
Afterwards during the preset duration of interval, obtain the second exhaust temperature that described compressor is current；
Described adjusting module 130 is additionally operable to when described second exhaust temperature is more than described target exhaust temperature,
Reduce the running frequency of described compressor.
In the present embodiment, the size of preset duration can be configured according to actual needs, does not makees at this
Limit.
If after compressor stable operation, owing to the first exhaust temperature obtained is more than target exhaust temperature,
Therefore the aperture of electric expansion valve is adjusted, after the preset duration of interval, the second row temperature of acquisition
Degree is still above target exhaust temperature, then showing cannot be by regulation on the premise of producing coolant air-flow sound
The aperture of electric expansion valve makes first exhaust temperature reach the temperature range that target exhaust temperature is corresponding
In, therefore can reduce the delivery temperature of compressor by the way of reducing the running frequency of compressor.
Optionally, after the running frequency reducing compressor, during the preset duration of interval, can again obtain
The 3rd delivery temperature that compressor is current is if the 3rd delivery temperature is less than target exhaust temperature, the most permissible
Rise the running frequency of high compressor so that the normal heat exchange of air-conditioner, avoid the same of generation coolant air-flow sound
Time, take into account the heat transfer effect of air-conditioner further.
It should be noted that in this article, term " include ", " comprising " or its any other variant
Be intended to comprising of nonexcludability so that include the process of a series of key element, method, article or
Person's device not only includes those key elements, but also includes other key elements being not expressly set out, or also
Including the key element intrinsic for this process, method, article or device.In the feelings not having more restriction
Under condition, statement " including ... " key element limited, it is not excluded that include this key element process,
Method, article or device there is also other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive above-mentioned
Embodiment method can add the mode of required general hardware platform by software and realize, naturally it is also possible to logical
Cross hardware, but a lot of in the case of the former is more preferably embodiment.Based on such understanding, the present invention's
The part that prior art is contributed by technical scheme the most in other words can be with the form body of software product
Revealing to come, this computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, light
Dish) in, including some instructions with so that a station terminal equipment (can be mobile phone, computer, service
Device, air-conditioner, or the network equipment etc.) perform the method described in each embodiment of the present invention.
It addition, the description relating to " first ", " second " etc. in invention is not only used for describing purpose, and not
It is understood that as instruction or implies its relative importance or the implicit quantity indicating indicated technical characteristic.
Thus, define " first ", the feature of " second " can express or implicitly include at least one should
Feature.It addition, the technical scheme between each embodiment can be combined with each other, but must be with ability
Based on territory those of ordinary skill is capable of, when the combination of technical scheme occurs conflicting or cannot be real
People should think that the combination of this technical scheme does not exists, the most not at the protection domain of application claims now
Within.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. the control method of an air conditioner electronic expansion valve, it is characterised in that described air conditioner electronic expansion valve
Control method include:
When air-conditioner starts, determine the target operating frequency of compressor；
Obtain the first running frequency that described compressor is current, the most described in described first running frequency
During target operating frequency, according to the corresponding relation of default running frequency Yu the opening value of electric expansion valve,
Determine the opening value that described first running frequency is corresponding；
The aperture of electric expansion valve is adjusted to the described opening value determined；
Wherein, in described corresponding relation, described default running frequency is the least, the opening value of its correspondence
The least.
2. the control method of air conditioner electronic expansion valve as claimed in claim 1, it is characterised in that described
The control method of air conditioner electronic expansion valve also includes:
After described compressor reaches described target operating frequency stable operation, obtain described compressor and work as
Front first exhaust temperature and the second current running frequency, and determine corresponding with described second running frequency
Target exhaust temperature；
When described first exhaust temperature is more than described target exhaust temperature, obtain current environmental temperature, and
According to the corresponding relation between default ambient temperature, running frequency and noise critical angle value, determine with
The noise critical angle value that current environmental temperature is corresponding with described second running frequency；
Adjust the aperture of described electric expansion valve, make the opening value after adjustment face less than or equal to described noise
Boundary's opening value.
3. the control method of air conditioner electronic expansion valve as claimed in claim 1, it is characterised in that described
The control method of air conditioner electronic expansion valve also includes:
When described compressor reaches described target operating frequency, determine with described according to described corresponding relation
The reference opening value that target operating frequency is corresponding, and the aperture of described electric expansion valve is adjusted to described ginseng
Examine opening value；
After described compressor stable operation, obtain the current first exhaust temperature of described compressor with current
The second running frequency, and determine the target exhaust temperature corresponding with described second running frequency；
When described first exhaust temperature is more than described target exhaust temperature, obtain current environmental temperature, and
According to the corresponding relation between default ambient temperature, running frequency and aperture correction value, determine with currently
The aperture correction value that ambient temperature is corresponding with current operation frequency；
The aperture of described electric expansion valve is regulated according to the described aperture correction value determined.
4. the control method of air conditioner electronic expansion valve as claimed in claim 2 or claim 3, it is characterised in that
First exhaust temperature that the described compressor of described acquisition is current and the second current running frequency, and determine with
After the step of the target exhaust temperature that described second running frequency is corresponding, also include:
When described first exhaust temperature is less than described target exhaust temperature, by opening of described electric expansion valve
Degree is turned down, until the aperture of described electric expansion valve reaches to preset minimum aperture or described first exhaust temperature
Reach described target exhaust temperature.
5. the control method of air conditioner electronic expansion valve as claimed in claim 2 or claim 3, it is characterised in that
After described compressor stable operation and adjust described electric expansion valve aperture after, also include:
When adjusting interval preset duration after the aperture of described electric expansion valve, obtain described compressor and work as
Front second exhaust temperature；
When described second exhaust temperature is more than described target exhaust temperature, reduce the operation of described compressor
Frequency.
6. an air-conditioner, it is characterised in that described air-conditioner includes compressor, electric expansion valve and control
Device processed, described controller includes determining module, acquisition module and adjusting module；
Described determine that module is for when air-conditioner starts, determining the target operating frequency of compressor；
Described acquisition module, for obtaining the first running frequency that described compressor is current, described determines module
It is additionally operable to when described first running frequency is not up to described target operating frequency, according to default operation frequency
Rate and the corresponding relation of the opening value of electric expansion valve, determine the opening value that described first running frequency is corresponding；
Described adjusting module is for adjusting the aperture of electric expansion valve to the described opening value determined；
Wherein, in described corresponding relation, described default running frequency is the least, the opening value of its correspondence
The least.
7. air-conditioner as claimed in claim 6, it is characterised in that described acquisition module is additionally operable in institute
State after compressor reaches described target operating frequency stable operation, obtain that described compressor is current first
Delivery temperature and the second current running frequency, described determine that module is additionally operable to determine and described second runs
The target exhaust temperature that frequency is corresponding；
Described acquisition module is additionally operable to, when described first exhaust temperature is more than described target exhaust temperature, obtain
Take current environmental temperature, described determine that module is additionally operable to according to the ambient temperature preset, running frequency and makes an uproar
Corresponding relation between sound critical angle value, determines and current environmental temperature and described second running frequency pair
The noise critical angle value answered；
Described adjusting module is additionally operable to adjust the aperture of described electric expansion valve, makes the opening value after adjustment little
In or equal to described noise critical angle value.
8. air-conditioner as claimed in claim 6, it is characterised in that described determine that module is additionally operable in institute
State compressor when reaching described target operating frequency, determine and described object run according to described corresponding relation
The reference opening value that frequency is corresponding, described adjusting module is additionally operable to adjust the aperture of described electric expansion valve
To described with reference to opening value；
Described acquisition module is additionally operable to, after described compressor stable operation, obtain described compressor current
First exhaust temperature and the second current running frequency, described determine that module is additionally operable to determine and described second
The target exhaust temperature that running frequency is corresponding；
Described acquisition module is additionally operable to, when described first exhaust temperature is more than described target exhaust temperature, obtain
Take current environmental temperature, described determine that module is additionally operable to according to the ambient temperature preset, running frequency and opens
Corresponding relation between degree correction value, determines the aperture corresponding with current environmental temperature and current operation frequency
Correction value；
Described adjusting module is additionally operable to regulate described electric expansion valve according to the described aperture correction value determined
Aperture.
9. air-conditioner as claimed in claim 7 or 8, it is characterised in that described adjusting module is additionally operable to
When described first exhaust temperature is less than described target exhaust temperature, the aperture of described electric expansion valve is adjusted
It is little, until the aperture of described electric expansion valve reaches to preset minimum aperture or described first exhaust temperature reaches
Described target exhaust temperature.
10. air-conditioner as claimed in claim 7 or 8, it is characterised in that described acquisition module is also used
In when adjusting interval preset duration after the aperture of described electric expansion valve, obtain described compressor current
Second exhaust temperature；
Described adjusting module is additionally operable to when described second exhaust temperature is more than described target exhaust temperature, fall
The running frequency of low described compressor.
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