CN106403140B - A kind of control method for electronic expansion valve of air-cooled unit - Google Patents
A kind of control method for electronic expansion valve of air-cooled unit Download PDFInfo
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- CN106403140B CN106403140B CN201510447302.8A CN201510447302A CN106403140B CN 106403140 B CN106403140 B CN 106403140B CN 201510447302 A CN201510447302 A CN 201510447302A CN 106403140 B CN106403140 B CN 106403140B
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- expansion valve
- electric expansion
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Abstract
A kind of control method for electronic expansion valve of air-cooled unit, comprising: in the process of running, the aperture of the electric expansion valve is adjusted according to operating parameter and operation trend.Using method described herein, can reach following effect: unit can be run under different operating conditions, determine that electric expansion valve is located at reasonable tune valve initial opening；In operational process, electric expansion valve toning is avoided, reduces oscillation, electric expansion valve is made faster with system matches, to realize that mass of system flow is optimal, guarantee the optimal performance of machine set compressor, being can be best.
Description
Technical field
The present invention relates to air-conditioning expansion valve more particularly to a kind of control method for electronic expansion valve of air-cooled unit.
Background technique
In air-conditioning equipment, it is swollen that the method for generalling use the control compressor air suction degree of superheat adjusts air-conditioning equipment internal electron
Swollen valve opens or closes, so that equipment be allow to operate normally.Generally it is greater than degree of superheat target value in practical suction superheat
When, the aperture of electric expansion valve increases；When practical suction superheat is less than degree of superheat target value, the aperture of electric expansion valve subtracts
It is small；When practical suction superheat is equal to degree of superheat target value, the aperture of electric expansion valve is constant.Currently, electric expansion valve air-breathing
Degree of superheat control needs to detect two variables of suction temperature and pressure of inspiration(Pi), it may appear that suction superheat is excessively high to cause delivery temperature
It is excessively high to lead to carbon deposition phenomenon, unit overall performance is influenced, the effect that electric expansion valve finely throttles cannot be given full play to.
Summary of the invention
In view of this, in order to solve to exist in the prior art suction superheat it is excessively high, it is too low oscillation cause electric expansion valve
Poor with system followability, the problem of influencing unit overall performance, the purpose of the present invention is to propose to a kind of electronics of air-cooled unit is swollen
Swollen valve control method.In order to which some aspects of the embodiment to disclosure have a basic understanding, it is shown below simple general
It includes.The summarized section is not extensive overview, nor to determine key/critical component or describe the protection of these embodiments
Range.Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
In some alternative embodiments, the method, comprising: in the process of running, become according to operating parameter and operation
The aperture of the electric expansion valve is adjusted in gesture.
In some alternative embodiments, before operation, further includes: determine degree of superheat target value T and electric expansion valve fortune
Capable initial opening.
In some alternative embodiments, the initial opening of the determining degree of superheat target value T and electric expansion valve operation,
Include:
According to unit operational mode and ambient temperature signal, the T is determined；
Initially opening for the electric expansion valve is determined according to unit operational mode, ambient temperature signal and return water temperature signal
Degree.
In some alternative embodiments, the operating parameter includes: suction pressure of compressor and compressor air suction temperature.
In some alternative embodiments, the initial opening of the determining degree of superheat target value T and electric expansion valve operation,
Include:
Acquire the ambient temperature signal and return water temperature signal；
It is looked into degree of superheat corresponding relationship corresponding with the unit operational mode according to the ambient temperature signal
Ask the T；
According to the unit operational mode, ambient temperature signal and return water temperature signal, in initial opening corresponding relationship
Inquire the initial opening of the electric expansion valve；
Wherein, the degree of superheat corresponding relationship includes suction superheat corresponding to varying environment temperature range；It is described first
Beginning aperture corresponding relationship includes the electric expansion valve corresponding to different operational modes, environment temperature and return water temperature range
Initial opening.
In some alternative embodiments, the aperture of the electric expansion valve is adjusted according to operating parameter, comprising:
Continuous detection n group suction pressure of compressor and compressor air suction temperature；
According to the n group suction pressure of compressor, compressor air suction temperature and degree of superheat target value T, n are successively calculated
Suction superheat deviation delta T', i.e. Δ T'1, Δ T'2..., Δ T'n；
According to n-th of suction superheat deviation delta T'1, Δ T'2..., Δ T'nVariation tendency, determine the electronic expansion
The aperture of valve.
In some alternative embodiments, according to Δ T'1, Δ T'2..., Δ T'nVariation tendency, determine that the electronics is swollen
The aperture of swollen valve, comprising:
If Δ T'n=0, then the aperture of electric expansion valve remains unchanged；
If Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then the aperture of electric expansion valve maintains not
Become；
If Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or increasing trend, then electric expansion valve closes
Valve, and according to Δ T'nDetermine its aperture；
If Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in increasing trend, then the aperture of electric expansion valve maintains
It is constant；
If Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or decline trend, then electric expansion valve is opened
Valve, and according to Δ T'nDetermine its aperture.
In some alternative embodiments, in the process of running, it executes according to the tune valve period to the electric expansion valve
The step of aperture is adjusted；Wherein, the tune valve period be it is preset, be manually arranged, or according to current machine set system
What feature determined.
In some alternative embodiments, the tune valve period is determined according to the characteristics of current machine set system, comprising:
According to the operational mode of current machine set system, the tune valve period is determined.
Using above-described embodiment, following effect can reach:
Unit can be run under different operating conditions, determine that electric expansion valve is located at reasonable tune valve initial opening；
In operational process, electric expansion valve toning is avoided, reduces oscillation, makes electric expansion valve faster with system matches, it is real
Existing mass of system flow is optimal, guarantees the optimal performance of machine set compressor, and being can be best.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows a kind of flow diagram of air-cooled unit control method for electronic expansion valve of the embodiment of the present invention；
Fig. 2 shows a kind of signals of the detailed process of air-cooled unit control method for electronic expansion valve of the embodiment of the present invention
Figure.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, these embodiments of the invention can individually or generally be indicated that this is only with term " invention "
For convenience, and if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is to appoint
What single invention or inventive concept.
In some alternative embodiments, a kind of control method for electronic expansion valve of air-cooled unit, comprising: in operational process
In, the aperture of the electric expansion valve is adjusted according to operating parameter and operation trend；
In the prior art, the electric expansion valve of general air-conditioning air-cooled unit is only to control electronics by suction superheat difference
Expansion valve opens or closes, and use parameter index single in this way controls the folding meeting of electric expansion valve so that air-conditioner set
Be easy to appear in actual use suction superheat it is excessively high, it is too low oscillation cause electric expansion valve and system followability poor,
It can not effectively realize degree of superheat control, influence unit overall performance.In the method, by operating parameter it will be seen that air conditioner
The current operating status of group, and operation trend has reacted compressor dynamic operating condition within nearly a period of time, according to air-conditioning
Operating parameter and operation trend in unit running process more effective, more accurately can carry out the aperture of electric expansion valve
It adjusts；
In some alternative embodiments, before operation, further includes: determine degree of superheat target value T and electric expansion valve fortune
Capable initial opening；
Fig. 1 is a kind of flow diagram of the control method for electronic expansion valve of air-cooled unit in the embodiment of the present invention；Such as Fig. 1
It is shown, which comprises
S101 determines the T according to unit operational mode and ambient temperature signal；
S102 determines the electric expansion valve according to unit operational mode, ambient temperature signal and return water temperature signal
Initial opening；
S103 in the process of running adjusts the aperture of the electric expansion valve according to operating parameter and operation trend
Section；
Further, the initial opening of the determining degree of superheat target value T and electric expansion valve operation, comprising:
Acquire the ambient temperature signal and return water temperature signal；
It is looked into degree of superheat corresponding relationship corresponding with the unit operational mode according to the ambient temperature signal
Ask the T；
According to the unit operational mode, ambient temperature signal and return water temperature signal, in initial opening corresponding relationship
Inquire the initial opening of the electric expansion valve；
Wherein, the degree of superheat corresponding relationship includes suction superheat corresponding to varying environment temperature range；It is described first
Beginning aperture corresponding relationship includes the electric expansion valve corresponding to different operational modes, environment temperature and return water temperature range
Initial opening；
In some alternative embodiments, the operating parameter includes: suction pressure of compressor and compressor air suction temperature；
Further, the aperture of the electric expansion valve is adjusted according to operating parameter, comprising:
Continuous detection n group suction pressure of compressor and compressor air suction temperature；
According to the n group suction pressure of compressor, compressor air suction temperature and degree of superheat target value T, n are successively calculated
Suction superheat deviation delta T', i.e. Δ T'1, Δ T'2..., Δ T'n；
According to n-th of suction superheat deviation delta T'1, Δ T'2..., Δ T'nVariation tendency, determine the electronic expansion
The aperture of valve；
Further, according to Δ T'1, Δ T'2..., Δ T'nVariation tendency, determine the aperture of the electric expansion valve,
Include:
If Δ T'n=0, then the aperture of electric expansion valve remains unchanged；
If Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then the aperture of electric expansion valve maintains not
Become；
If Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or increasing trend, then electric expansion valve closes
Valve, and according to Δ T'nDetermine its aperture；
If Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in increasing trend, then the aperture of electric expansion valve maintains
It is constant；
If Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or decline trend, then electric expansion valve is opened
Valve, and according to Δ T'nDetermine its aperture；
In some alternative embodiments, in the process of running, it executes according to the tune valve period to the electric expansion valve
The step of aperture is adjusted；Wherein, the tune valve period be it is preset, be manually arranged, or according to current machine set system
What feature determined；Such as: 20min is set by the expansion valve tune valve period of unit when leaving the factory, then the unit is opened from unit
Begin after operation, then every 20min execute one time it is above-mentioned according to operating parameter and operation trend to the aperture of the electric expansion valve into
The operation that row is adjusted；Alternatively, system can obtain according to the setting of user and adjust the valve period before system commencement of commercial operation；Alternatively, system root
The characteristics of according to current machine set system (such as the operational mode (heating, refrigeration, quiet dormancy) or air-conditioning that machine set system is current are current
Wind speed etc.) determine the tune valve period.
Fig. 2 is a kind of flow diagram of the control method for electronic expansion valve of air-cooled unit in the embodiment of the present invention；Such as Fig. 2
It is shown, which comprises
S201 acquires ambient temperature signal, return water temperature signal；
S202 determines degree of superheat target value T and electric expansion valve initial opening；
S203 acquires n group pressure of inspiration(Pi), suction temperature signal；
S204 calculates Δ T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency；
S205, according to Δ T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency determine how adjusting electric expansion valve；
Wherein, this step specifically includes:
S2051, if Δ T'n=0, then the aperture of electric expansion valve remains unchanged；
S2052, if Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then the aperture of electric expansion valve
It remains unchanged；
S2053, if Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or increasing trend, then electronic expansion
Valve closes valve, and according to Δ T'nDetermine its aperture；
S2054, if Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in increasing trend, then electric expansion valve is opened
Degree remains unchanged；
S2055, if Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or decline trend, then electronic expansion
Valve valve opening, and according to Δ T'nDetermine its aperture.
In the following, method described in Fig. 2 is described in detail in conjunction with specific embodiments:
Example:
Tables 1 and 2 is the degree of superheat mapping table under refrigeration and heating mode respectively, which can be pre- when factory
It sets in systems, or be manually arranged by operation interface；Corresponding degree of superheat target can be determined according to Tables 1 and 2
Value T；
Degree of superheat mapping table under 1 refrigeration mode of table
| It is segmented principle | Degree of superheat target value T (K) |
| 18~53 DEG C | 5 |
Degree of superheat mapping table under 2 refrigeration mode of table
| It is segmented principle | Degree of superheat target value T (K) |
| Ta≥5℃ | 5 |
| 5 DEG C of Ta < | 2 |
Table 3 is the electric expansion valve initial opening table of comparisons, for machine set system according to current operational mode, environment temperature
Ta and return water temperature Tewi determine electric expansion valve initial opening；
Table 3 is the electric expansion valve initial opening table of comparisons
Assuming that air-cooled unit is at 38 DEG C of circumstance temperature, 18 DEG C of starting refrigerating operatons of return water temperature, according to operational mode (system when starting
It is cold), environment temperature, determine degree of superheat target value T be 5K, starting operation after detect 5 groups of parameters within a tune valve period:
Pressure of inspiration(Pi) is respectively 0.510MPa, 0.509MPa, 0.508MPa, 0.507MPa, 0.507Mpa；
Suction temperature is respectively 12.68 DEG C, 12.52 DEG C, 12.37 DEG C, 12.22 DEG C, 12.12 DEG C；
According to the current suction superheat of the pressure of inspiration(Pi) of detection, temperature computation and suction superheat deviation delta T', specifically
Process are as follows:
Saturation temperature (6.32 DEG C) are inquired according to pressure of inspiration(Pi) (such as 0.507MPa) first；
Secondly, calculating T=12.12-6.32=5.8 DEG C of Δ；
0 DEG C of -5=0.8 DEG C of > of calculating Δ T'=(12.12-6.32)；
It is same as mentioned above, Δ T' variation tendency is calculated according to the 5 groups of parameters detected in a tune valve period are as follows: 1.2,
1.1,1.0,0.9 and 0.8；
It is judged as decline trend by above-mentioned Δ T' variation tendency；
According to 0 DEG C of Δ T'>, and decline trend, then electric expansion valve maintains aperture.
Using above-described embodiment, following effect can reach:
Unit can be run under different operating conditions, determine that electric expansion valve is located at reasonable tune valve initial opening；
In operational process, electric expansion valve toning is avoided, reduces oscillation, makes electric expansion valve faster with system matches, it is real
Existing mass of system flow is optimal, guarantees the optimal performance of machine set compressor, and being can be best.
It should also be appreciated by one skilled in the art that various illustrative logical boxs, mould in conjunction with the embodiments herein description
Electronic hardware, computer software or combinations thereof may be implemented into block, circuit and algorithm steps.In order to clearly demonstrate hardware and
Interchangeability between software surrounds its function to various illustrative components, frame, module, circuit and step above and carries out
It is generally described.Hardware is implemented as this function and is also implemented as software, depends on specific application and to entire
The design constraint that system is applied.Those skilled in the art can be directed to each specific application, be realized in a manner of flexible
Described function, still, this realization decision should not be construed as a departure from the scope of protection of this disclosure.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of control method for electronic expansion valve of air-cooled unit characterized by comprising
In the process of running, the aperture of the electric expansion valve is adjusted according to operating parameter and operation trend；
Wherein, the operating parameter includes: suction pressure of compressor and compressor air suction temperature；
It is described that the aperture of the electric expansion valve is adjusted according to operating parameter, comprising:
Continuous detection n group suction pressure of compressor and compressor air suction temperature；
According to the n group suction pressure of compressor, compressor air suction temperature and degree of superheat target value T, n air-breathing is successively calculated
Degree of superheat deviation delta T', i.e. Δ T'1, Δ T'2..., Δ T'n；
According to n-th of suction superheat deviation delta T'1, Δ T'2..., Δ T'nVariation tendency, determine the electric expansion valve
Aperture.
2. the method as described in claim 1, which is characterized in that before operation, further includes: determine degree of superheat target value T and electricity
The initial opening of sub- expansion valve operation.
3. method according to claim 2, which is characterized in that the determining degree of superheat target value T and electric expansion valve operation
Initial opening, comprising:
According to unit operational mode and ambient temperature signal, the T is determined；
The initial opening of the electric expansion valve is determined according to unit operational mode, ambient temperature signal and return water temperature signal.
4. method as claimed in claim 3, which is characterized in that the determining degree of superheat target value T and electric expansion valve operation
Initial opening, comprising:
Acquire the ambient temperature signal and return water temperature signal；
According to the ambient temperature signal, in degree of superheat corresponding relationship corresponding with the unit operational mode, institute is inquired
State T；
According to the unit operational mode, ambient temperature signal and return water temperature signal, inquired in initial opening corresponding relationship
The initial opening of the electric expansion valve；
Wherein, the degree of superheat corresponding relationship includes suction superheat corresponding to varying environment temperature range；It is described initially to open
Spending corresponding relationship includes the initial of the electric expansion valve corresponding to different operational modes, environment temperature and return water temperature range
Aperture.
5. the method as described in claim 1, which is characterized in that according to Δ T'1, Δ T'2..., Δ T'nVariation tendency, determine
The aperture of the electric expansion valve, comprising:
If Δ T'n=0, then the aperture of electric expansion valve remains unchanged；
If Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then the aperture of electric expansion valve remains unchanged；
If Δ T'n> 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or increasing trend, then electric expansion valve closes valve, and root
According to Δ T'nDetermine its aperture；
If Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in increasing trend, then the aperture of electric expansion valve remains unchanged；
If Δ T'n< 0, and Δ T'1, Δ T'2..., Δ T'nWhen in fluctuation or decline trend, then electric expansion valve valve opening, and root
According to Δ T'nDetermine its aperture.
6. method according to any one of claims 1 to 5, which is characterized in that in the process of running, held according to the tune valve period
The step of aperture of the electric expansion valve is adjusted in row；Wherein, the tune valve period be it is preset, be manually arranged,
Or according to determination the characteristics of current machine set system.
7. method as claimed in claim 6, which is characterized in that determine the tune valve week according to the characteristics of current machine set system
Phase, comprising:
According to the operational mode of current machine set system, the tune valve period is determined.
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| CN201510447302.8A CN106403140B (en) | 2015-07-27 | 2015-07-27 | A kind of control method for electronic expansion valve of air-cooled unit |
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| CN201510447302.8A CN106403140B (en) | 2015-07-27 | 2015-07-27 | A kind of control method for electronic expansion valve of air-cooled unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023945A (en) * | 2017-04-01 | 2017-08-08 | 青岛海尔空调电子有限公司 | Air-conditioning system and the control method for air-conditioning system |
| CN107062556A (en) * | 2017-05-11 | 2017-08-18 | 广东志高暖通设备股份有限公司 | A kind of control method of refrigerant flow of module water dispenser |
| CN107289594B (en) * | 2017-07-24 | 2020-03-10 | 珠海格力电器股份有限公司 | Air conditioning unit, air conditioning control network and air conditioning control method |
| CN107606830B (en) * | 2017-09-05 | 2020-05-12 | 浙江正理生能科技有限公司 | Electronic expansion valve adjusting method |
| CN109579348A (en) * | 2018-12-04 | 2019-04-05 | 宁波工程学院 | The multi-functional multi-joint dry type capillary radiation heat pump unit of one kind and its control method |
| CN112050498B (en) * | 2020-09-16 | 2022-02-18 | 浙江正理生能科技有限公司 | Defrosting method for heat pump unit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100036788A (en) * | 2008-09-30 | 2010-04-08 | 엘지전자 주식회사 | Multi-type air conditioner and control method of the same |
| CN102384618A (en) * | 2011-11-11 | 2012-03-21 | 天津商业大学 | Method for controlling opening of electronic expansion valve in heat pump water heater system |
| CN102954555A (en) * | 2011-08-22 | 2013-03-06 | 浙江三花股份有限公司 | Method for controlling opening of expansion valve |
| CN103033004A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103206820A (en) * | 2013-04-27 | 2013-07-17 | 海尔集团公司 | Expansion valve opening controlling method for preventing oscillating of expansion valve |
| CN103344069A (en) * | 2013-06-26 | 2013-10-09 | 广东美的制冷设备有限公司 | Method and device for controlling electronic expansion valve |
| CN103438547A (en) * | 2013-09-23 | 2013-12-11 | 深圳麦克维尔空调有限公司 | Control method of electronic expansion valve |
| CN103868299A (en) * | 2012-12-13 | 2014-06-18 | 美的集团股份有限公司 | Fine adjustment control method and system of electronic expansion valve |
| CN104110768A (en) * | 2013-05-30 | 2014-10-22 | 广东美的制冷设备有限公司 | Control method and circuit for electronic expansion valve of air conditioner |
-
2015
- 2015-07-27 CN CN201510447302.8A patent/CN106403140B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100036788A (en) * | 2008-09-30 | 2010-04-08 | 엘지전자 주식회사 | Multi-type air conditioner and control method of the same |
| CN102954555A (en) * | 2011-08-22 | 2013-03-06 | 浙江三花股份有限公司 | Method for controlling opening of expansion valve |
| CN103033004A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN102384618A (en) * | 2011-11-11 | 2012-03-21 | 天津商业大学 | Method for controlling opening of electronic expansion valve in heat pump water heater system |
| CN103868299A (en) * | 2012-12-13 | 2014-06-18 | 美的集团股份有限公司 | Fine adjustment control method and system of electronic expansion valve |
| CN103206820A (en) * | 2013-04-27 | 2013-07-17 | 海尔集团公司 | Expansion valve opening controlling method for preventing oscillating of expansion valve |
| CN104110768A (en) * | 2013-05-30 | 2014-10-22 | 广东美的制冷设备有限公司 | Control method and circuit for electronic expansion valve of air conditioner |
| CN103344069A (en) * | 2013-06-26 | 2013-10-09 | 广东美的制冷设备有限公司 | Method and device for controlling electronic expansion valve |
| CN103438547A (en) * | 2013-09-23 | 2013-12-11 | 深圳麦克维尔空调有限公司 | Control method of electronic expansion valve |
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