CN105783350B - A kind of control method for electronic expansion valve of air conditioner and device - Google Patents
A kind of control method for electronic expansion valve of air conditioner and device Download PDFInfo
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- CN105783350B CN105783350B CN201410774328.9A CN201410774328A CN105783350B CN 105783350 B CN105783350 B CN 105783350B CN 201410774328 A CN201410774328 A CN 201410774328A CN 105783350 B CN105783350 B CN 105783350B
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- expansion valve
- electric expansion
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- air conditioner
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The present invention relates to a kind of control method for electronic expansion valve of air conditioner and devices, the present invention is in operation of air conditioner, the opening information of real-time storage electric expansion valve, thus, in air-conditioning shutdown, include the case where normal shutdown and abnormal shutdown, electric expansion valve keeps current aperture constant, thus, the current location when shutdown of electric expansion valve last time can be read when being switched on again, from current location continue that electric expansion valve is adjusted, it is resetted without carrying out step, both it avoided step and resets the damage caused by electric expansion valve, the adjustment time of electric expansion valve when can be reduced booting again, it being capable of cooling and warming more quickly.
Description
Technical field
The invention belongs to air-conditioning technical fields, specifically, being to be related to a kind of control method for electronic expansion valve of air conditioner and dress
It sets.
Background technique
Electric expansion valve is the important devices in air-conditioning refrigeration system.Existing air conditioner electronic expansion valve is in shutdown and booting
Control method are as follows:
1, the shutdown of air-conditioning last time is that normal off-mode is closing to guarantee the accuracy of electronic expansion valve opening adjusting
It is required to carry out step reset adjustment when machine and booting.When shutdown, control electric expansion valve is adjusted from current aperture to standard-sized sheet position
It sets, is adjusted after a period of time to full close position, then adjusted again to fully open position, walked from fully open position to the reset of full close position
Number is maximum step number K.When being switched on again, control electric expansion valve is adjusted from fully open position to full close position, and resetting step number is most
Big step number K, then adjust to target aperture, it is then turned on compressor.Electric expansion valve adjustment process continues when above-mentioned air-conditioning is switched on
Tens seconds, step reset adjustment was continually crossed when not only influencing the speed that air conditioner refrigerating heats, and shutting down and be switched on and is easy to cause
Electric expansion valve damage can not be operating normally.
3, air-conditioning last time shutdown is power-off or abnormal shutdown state, and electric expansion valve is parked in current location, and air-conditioning
And the current location of not stored electric expansion valve.When being switched on again, control electric expansion valve is adjusted from current location to fully closed position
It sets, at this point, resetting step number is still maximum step number K, and adjustment step number needed for electric expansion valve current location to full close position is small
In K, thus, electric expansion valve crosses step will be very serious, can damage to electric expansion valve, and electronics is swollen when air-conditioning is switched on
Swollen valve regulation process continues tens seconds, influences the speed of air conditioner refrigerating heating.
Summary of the invention
The purpose of the present invention is to provide a kind of control method for electronic expansion valve of air conditioner, solve existing air conditioner electronic expansion
The technical issues of valve crosses step and resets the speed for influencing air conditioner refrigerating heating, causes electric expansion valve damage that can not be operating normally.
In order to solve the above technical problems, the present invention is achieved by the following scheme:
A kind of control method for electronic expansion valve of air conditioner, the method are as follows:
When operation of air conditioner, real-time detection stores the opening information of electric expansion valve；
When air-conditioning shuts down, electric expansion valve keeps current aperture；
When air-conditioning is switched on again, status information is set according to air-conditioning and calculates the target opening information of electric expansion valve, and is read
The opening information L of the electric expansion valve stored when air-conditioning being taken to shut down generates electronic expansion valve controls signal, controls electric expansion valve
Reach target aperture;
Start compressor, air-conditioning is run according to setting state.
Preferably, the control method further includes the steps that the shutdown number for recording the air-conditioning.
In order to guarantee the accuracy of electronic expansion valve opening adjusting, the air-conditioning shuts down after n times, when being switched on again, first
Control electric expansion valve carries out reset operation.
Preferably, the aperture for resetting operation and including the following steps: the electric expansion valve stored when reading air-conditioning shutdown
Information L calculates the repositioning information of electric expansion valve, generates electric expansion valve reseting controling signal, and control electric expansion valve is closed
It resets.
Further, the repositioning information of the electric expansion valve is L+M.
Based on the design of above-mentioned control method for electronic expansion valve of air conditioner, the invention also provides a kind of electronic expansion valve controls
Device, comprising:
Processing module sets the target aperture letter that status information calculates electric expansion valve according to air-conditioning when for air-conditioning booting
Breath, and the opening information L of the electric expansion valve stored when the shutdown of last time air-conditioning is read, electronic expansion valve controls signal is generated, it is defeated
Out to electric expansion valve drive module；
The opening information detection module of electric expansion valve, for detecting the opening information of electric expansion valve；
Data memory module, the opening information for real-time storage electric expansion valve；
Electric expansion valve drive module, for driving the electric expansion valve according to the electronic expansion valve controls signal,
Adjust the aperture of the electric expansion valve.
Preferably, memory module is used to record the shutdown number of the air-conditioning.
In order to guarantee that the accuracy of electronic expansion valve opening adjusting, control module are resetted for controlling electric expansion valve
Operation.
Preferably, control module is used to calculate the repositioning information of electric expansion valve, generates electric expansion valve and resets control letter
Number, control electric expansion valve, which is closed, to be resetted.
Compared with prior art, the advantages and positive effects of the present invention are: the present invention is in operation of air conditioner, real-time storage electricity
The opening information of sub- expansion valve, thus, in air-conditioning shutdown, include the case where normal shutdown and abnormal shutdown, electronic expansion
Valve keeps current aperture constant, thus, the current location when shutdown of electric expansion valve last time can be read when being switched on again, from
Current location continues that electric expansion valve is adjusted, and resets without carrying out step, both avoided step and resets to electronic expansion
The adjustment time of electric expansion valve when damaging caused by valve, and can be reduced booting, being capable of cooling and warming more quickly.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Detailed description of the invention
Fig. 1 is the flow chart of 1 control method for electronic expansion valve of the specific embodiment of the invention.
Fig. 2 is the functional block diagram of 1 control device for electronic expansion valve of the specific embodiment of the invention.
Specific embodiment
A specific embodiment of the invention is described in detail with reference to the accompanying drawing.
The present embodiment proposes a kind of control method for electronic expansion valve of air conditioner, as shown in Figure 1, the control method of the present embodiment
Include the following steps:
Step S1, when air-conditioning operates normally, real-time detection stores the opening information of electric expansion valve.
In the present embodiment, when operation of air conditioner, status information is set according to air-conditioning and air conditioning running state information calculates
The target opening information of electric expansion valve is needed when target opening information and practical opening information are inconsistent to electronic expansion
The aperture of valve is adjusted.During the aperture adjustment of electric expansion valve, the opening information of electric expansion valve is examined in real time
Survey storage.In the present embodiment, air-conditioning exports the aperture of positive negative pulse stuffing signal adjustment electric expansion valve, exports a positive pulse letter
Number, control electric expansion valve increases by a step, exports a undersuing, and control electric expansion valve reduces by a step, while to arteries and veins
It rushes signal and carries out detection counting, detect a positive pulse signal, the opening information+1 of the electric expansion valve of storage detects one
A undersuing, the opening information -1 of the electric expansion valve of storage, the electronic expansion valve opening real-time update of storage.For example,
The current aperture of air conditioner electronic expansion valve is L, and the opening information of the electric expansion valve of air-conditioning storage is L, if air-conditioning exports one
Positive pulse signal, then the aperture of electric expansion valve is adjusted to L+1, and detection of air-conditioning is to a positive pulse signal, the electricity updated storage
Sub- expansion valve opening information is L+1, if air-conditioning exports a undersuing, the aperture of electric expansion valve is adjusted to L-1, empty
Tune detects a undersuing, and the electronic expansion valve opening information updated storage is L-1.
Step S2, air-conditioning receive off signal, current aperture L when electric expansion valve remains turned offIt closes, the electricity of air-conditioning storage
The opening information of sub- expansion valve is LIt closes。
In the present embodiment, either normal shutdown state or abnormal shutdown state are not carried out electric expansion valve
Aperture L when resetting operation, and remaining turned offIt closesIt is constant, it can prevent from resetting and cross successive step to electric expansion valve when operating
Damage, simultaneously as the opening information L of electric expansion valveIt closesIt is stored in air-conditioning, thus, it can be clear in booting next time
Know the opening information of electric expansion valve.
Step S3 records the shutdown number of air-conditioning.
Step S4, judges whether the shutdown number of air-conditioning is greater than the set value N, if so, S7 is entered step, otherwise, into step
Rapid S5.
Step S5 when air-conditioning is switched on again, sets the target aperture letter that status information calculates electric expansion valve according to air-conditioning
Breath is LMesh, read the opening information L of the electric expansion valve stored when air-conditioning shutdownIt closes, generate electronic expansion valve controls signal, control
Electric expansion valve reaches target aperture.
Specifically, it is L that air-conditioning, which calculates the electric expansion valve step number for needing to adjust,Mesh-LIt closes.If LMesh-LIt closesFor positive number, then air-conditioning
Export LMesh-LIt closesA positive pulse signal, control electric expansion valve are adjusted to target aperture LMeshIf LMesh-LIt closesFor negative, then air-conditioning exports
LMesh-LIt closesA undersuing, control electric expansion valve are adjusted to target aperture LMesh.Air-conditioning exports the process of positive and negative pulse signal
In, real-time detection positive negative pulse stuffing signal and the electronic expansion valve opening information updated storage.
Step S6, starts compressor, and air-conditioning is run according to setting state.Enter step S1.
Step S7 when air-conditioning is switched on again, reads the opening information L of the electric expansion valve stored when air-conditioning shutdownIt closes, calculate
The repositioning information of electric expansion valve is LIt closes+ M, wherein the constant that M is >=1.Generate electric expansion valve reseting controling signal, output
LIt closes+ M negative pulses, control electric expansion valve is reset to full close position, at this point, the electronic expansion valve opening information of storage is LIt closes-
(LIt closes+ M)=- M, when the electronic expansion valve opening information of storage is negative, taking electronic expansion valve opening information is 0 to be stored,
Complete primary reset.S5 is entered step, air-conditioning runs the operating status after booting again.
After air-conditioning is resetted, shutdown number is reset, and restarts to count.
In the present embodiment, when air-conditioning powers on for the first time, it is also desirable to it carries out primary reset and operates, control electric expansion valve to standard-sized sheet
Position, then adjust from fully open position to full close position.
As shown in Fig. 2, the present embodiment also proposed a kind of air conditioner electronic expansion valve control device, comprising:
Processing module 10 is less than or equal to set for reading the shutdown number of the storage of data memory module 13 in shutdown number
When definite value N, if air-conditioning is switched on, status information is set according to air-conditioning and calculates the target opening information of electric expansion valve, and reads number
The opening information L of electric expansion valve when shutting down according to the last time air-conditioning that memory module 13 storesIt closes, generate electronic expansion valve controls letter
Number, output to electric expansion valve drive module 14 controls electric expansion valve and adjusts and reach target aperture.
Alternatively, the shutdown number for reading the storage of data memory module 13, when the number that shuts down is greater than the set value N, if
Air-conditioning booting, control electric expansion valve carries out reset operation, and when resetting operation, processing module 10 calculates the reset of electric expansion valve
Information, generates electric expansion valve reseting controling signal, and output to electric expansion valve drive module 14 controls electric expansion valve and closes
It resets.It resets operation and then status information is set according to air-conditioning and calculate the target opening information of electric expansion valve, and read number
The opening information L of electric expansion valve when shutting down according to the last time air-conditioning that memory module 13 storesIt closes, generate electronic expansion valve controls letter
Number, output to electric expansion valve drive module 14 controls electric expansion valve and adjusts and reach target aperture.
The opening information detection module 12 of electric expansion valve, for detecting the opening information of electric expansion valve, and is transmitted to
Data memory module 13.
Data memory module 13 for the opening information of real-time storage electric expansion valve, and stores shutdown number.
Electric expansion valve drive module 14, for driving the electronic expansion according to the electronic expansion valve controls signal
Valve adjusts the aperture of the electric expansion valve.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of control method for electronic expansion valve of air conditioner, which is characterized in that the method are as follows:
When operation of air conditioner, real-time detection stores the opening information of electric expansion valve；
When air-conditioning shuts down, electric expansion valve keeps current aperture；
When air-conditioning is switched on again, status information is set according to air-conditioning and calculates the target opening information of electric expansion valve, and reads sky
The opening information L of electric expansion valve stored when shutdown is adjusted, generates electronic expansion valve controls signal, control electric expansion valve is from working as
Preceding aperture is adjusted, and reaches target aperture;
Start compressor, air-conditioning is run according to setting state.
2. control method for electronic expansion valve of air conditioner according to claim 1, which is characterized in that the control method further includes
The step of recording the shutdown number of the air-conditioning.
3. control method for electronic expansion valve of air conditioner according to claim 2, which is characterized in that the air-conditioning shutdown number is big
In setting shutdown times N time, when being switched on again, control electric expansion valve first carries out reset operation.
4. control method for electronic expansion valve of air conditioner according to claim 3, which is characterized in that the reset operation includes such as
Lower step: reading the opening information L of the electric expansion valve stored when air-conditioning shutdown, calculate the repositioning information of electric expansion valve, raw
At electric expansion valve reseting controling signal, controls electric expansion valve and close reset.
5. control method for electronic expansion valve of air conditioner according to claim 4, which is characterized in that the electric expansion valve is answered
Position information is L+M, the constant that M is >=1.
6. the air conditioner electronic expansion valve control device of method described in application claim 1-5 any one, which is characterized in that institute
Stating control device includes:
Processing module sets the target opening information that status information calculates electric expansion valve according to air-conditioning when for air-conditioning booting,
And the opening information L of the electric expansion valve stored when the shutdown of last time air-conditioning is read, electronic expansion valve controls signal is generated, output is extremely
Electric expansion valve drive module；
The opening information detection module of electric expansion valve, for detecting the opening information of electric expansion valve；
Data memory module, the opening information for real-time storage electric expansion valve；
Electric expansion valve drive module, for driving the electric expansion valve, adjustment according to the electronic expansion valve controls signal
The aperture of the electric expansion valve.
7. air conditioner electronic expansion valve control device according to claim 6, it is characterised in that: the memory module is for remembering
Record the shutdown number of the air-conditioning.
8. air conditioner electronic expansion valve control device according to claim 7, it is characterised in that: the control module is for controlling
Electric expansion valve processed carries out reset operation.
9. air conditioner electronic expansion valve control device according to claim 8, which is characterized in that the control module is based on
The repositioning information of electric expansion valve is calculated, electric expansion valve reseting controling signal is generated, control electric expansion valve, which is closed, to be resetted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410774328.9A CN105783350B (en) | 2014-12-16 | 2014-12-16 | A kind of control method for electronic expansion valve of air conditioner and device |
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| CN201410774328.9A CN105783350B (en) | 2014-12-16 | 2014-12-16 | A kind of control method for electronic expansion valve of air conditioner and device |
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| CN105783350A CN105783350A (en) | 2016-07-20 |
| CN105783350B true CN105783350B (en) | 2018-12-18 |
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| JP2020133927A (en) * | 2019-02-13 | 2020-08-31 | サンデン・オートモーティブクライメイトシステム株式会社 | Air conditioner for vehicle |
| CN110094841B (en) * | 2019-04-15 | 2021-11-02 | 青岛海尔空调电子有限公司 | Electronic expansion valve control method for air conditioner and air conditioner |
| CN111854237B (en) * | 2019-04-28 | 2022-04-29 | 杭州先途电子有限公司 | Control method, control device and controller |
| CN110701840A (en) * | 2019-09-12 | 2020-01-17 | 浙江中广电器股份有限公司 | Compressor starting low-pressure control method, compressor and low-temperature heat pump system |
| CN112524773B (en) * | 2020-12-09 | 2022-03-18 | 珠海格力电器股份有限公司 | Method and device for determining opening of electronic expansion valve |
| CN112556129B (en) * | 2020-12-11 | 2022-09-06 | 青岛海尔空调器有限总公司 | Method and device for controlling electronic expansion valve of air conditioner and air conditioner |
| CN112902402B (en) * | 2021-02-26 | 2022-04-08 | 珠海格力电器股份有限公司 | Control method of air conditioner |
| CN113654213B (en) * | 2021-08-18 | 2022-10-28 | 珠海格力电器股份有限公司 | Air conditioner control method and air conditioner |
| CN113959079B (en) * | 2021-09-30 | 2022-12-09 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| US11841151B2 (en) * | 2021-12-01 | 2023-12-12 | Haier Us Appliance Solutions, Inc. | Method of operating an electronic expansion valve in an air conditioner unit |
| CN114427734A (en) * | 2022-01-28 | 2022-05-03 | 北京小米移动软件有限公司 | Control method and device for air conditioner outdoor unit and storage medium |
| CN117249610A (en) * | 2022-06-09 | 2023-12-19 | 青岛海尔空调器有限总公司 | Air conditioner electronic expansion valve resetting method and system and air conditioner |
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