CN105783350A - Control method and device for air conditioner electronic expansion valve - Google Patents
Control method and device for air conditioner electronic expansion valve Download PDFInfo
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- CN105783350A CN105783350A CN201410774328.9A CN201410774328A CN105783350A CN 105783350 A CN105783350 A CN 105783350A CN 201410774328 A CN201410774328 A CN 201410774328A CN 105783350 A CN105783350 A CN 105783350A
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- expansion valve
- electric expansion
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- conditioning
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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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- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a control method and device for an air conditioner electronic expansion valve. When an air conditioner runs, the aperture information of the electronic expansion valve is stored in real time, and therefore when the air conditioner is shut down, the current aperture of the electronic expansion valve is kept unchanged under the normal shutdown situation and the abnormal shutdown situation; in this way, when starting is conducted again, the current position of the electronic expansion valve when the electronic expansion valve is shut down last time can be read, the electronic expansion valve continues to be adjusted from the current position, and over-step reset is not needed; and the damage to the electronic expansion valve due to over-step reset is avoided, the adjusting time on the electronic expansion valve during starting can be shortened as well, and refrigerating and heating can be more rapidly conducted.
Description
Technical field
The invention belongs to air-conditioning technical field, specifically, relate to a kind of control method for electronic expansion valve of air conditioner and device.
Background technology
Electric expansion valve is the important devices in air-conditioning refrigeration system.The existing air conditioner electronic expansion valve control method when shutdown and start is:
1, air-conditioning shutdown last time is normal shutdown state, in order to ensure the accuracy that electronic expansion valve opening regulates, all needs when shutdown and start to carry out walking resetting to adjust.During shutdown, controlling electric expansion valve and adjust to fully open position from current aperture, adjust to full close position, then adjust to fully open position again after a period of time, the reset step number from fully open position to full close position is maximum step number K.When again starting shooting, controlling electric expansion valve and adjust to full close position from fully open position, reset step number is maximum step number K, then adjusts to target aperture, is then turned on compressor.During the start of above-mentioned air-conditioning, electronic expansion valve regulation process continues tens seconds, not only affect the speed that air conditioner refrigerating heats, and shuts down and cross step reset adjustment during start continually and be easily caused electric expansion valve damage and cannot be operating normally.
3, air-conditioning shutdown last time is power-off or abnormal shutdown state, and electric expansion valve is parked in current location, and air-conditioning does not store the current location of electric expansion valve.When again starting shooting, control electric expansion valve to adjust from current location to full close position, now, reset step number is still maximum step number K, and electric expansion valve current location to the adjustment step number needed for full close position less than K, thus, it will be very serious that electric expansion valve crosses step, electric expansion valve can be caused damage, and during air-conditioning start, electronic expansion valve regulation process continues tens seconds, affects the speed that air conditioner refrigerating heats.
Summary of the invention
It is an object of the invention to provide a kind of control method for electronic expansion valve of air conditioner, solve existing air conditioner electronic expansion valve and cross step and reset and affect the speed that air conditioner refrigerating heats, cause the technical problem that electric expansion valve damage cannot be operating normally.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of control method for electronic expansion valve of air conditioner, described method is:
During operation of air conditioner, the opening information of the electric expansion valve of detection storage in real time；
During air-conditioning shutdown, electric expansion valve keeps current aperture；
When air-conditioning is started shooting again, set status information according to air-conditioning and calculate the target opening information of electric expansion valve, and read the opening information L of the electric expansion valve of storage during air-conditioning shutdown, generate electronic expansion valve controls signal, control electric expansion valve and reach target aperture;
Starting compressor, air-conditioning runs according to the state of setting.
Preferably, described control method also includes recording the step of the shutdown number of times of described air-conditioning.
In order to ensure the accuracy that electronic expansion valve opening regulates, after described air-conditioning shutdown n times, when again starting shooting, first control electric expansion valve and carry out reset operation.
Preferably, the opening information L of the electric expansion valve that described reset operation stores when comprising the steps: to read air-conditioning shutdown, calculate the repositioning information of electric expansion valve, generate electric expansion valve reseting controling signal, control electric expansion valve and close reset.
Further, the repositioning information of described electric expansion valve is L+M.
Based on the design of above-mentioned control method for electronic expansion valve of air conditioner, the invention allows for a kind of control device for electronic expansion valve, including:
Processing module, set status information according to air-conditioning when starting shooting for air-conditioning and calculate the target opening information of electric expansion valve, and read the opening information L of the electric expansion valve of storage during air-conditioning shutdown last time, generate electronic expansion valve controls signal, export to electric expansion valve driving module；
The opening information detection module of electric expansion valve, for detecting the opening information of electric expansion valve；
Data memory module, for the opening information of real-time storage electric expansion valve；
Electric expansion valve drives module, for driving described electric expansion valve according to described electronic expansion valve controls signal, adjusts the aperture of described electric expansion valve.
Preferably, memory module is for recording the shutdown number of times of described air-conditioning.
In order to ensure the accuracy that electronic expansion valve opening regulates, control module is used for controlling electric expansion valve and carries out reset operation.
Preferably, control module for calculating the repositioning information of electric expansion valve, generate electric expansion valve reseting controling signal, control electric expansion valve closedown and reset.
Compared with prior art, advantages of the present invention and have the benefit effect that the present invention is when operation of air conditioner, the opening information of real-time storage electric expansion valve, thus, when air-conditioning shuts down, situation including normal shutdown and abnormal shutdown, electric expansion valve all keeps current aperture constant, thus, again can read current location when electric expansion valve shut down last time during start, continue from current location electric expansion valve is adjusted, resetted without carrying out step, both the damage that electric expansion valve is caused by step reset had been avoided, the adjustment time of electric expansion valve during start can be reduced again, can cooling and warming more quickly.
After reading in conjunction with the accompanying the detailed description of embodiment of the present invention, the other features and advantages of the invention will become clearer from.
Accompanying drawing explanation
Fig. 1 is the flow chart of the specific embodiment of the invention 1 control method for electronic expansion valve.
Fig. 2 is the theory diagram of the specific embodiment of the invention 1 control device for electronic expansion valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The present embodiment proposes a kind of control method for electronic expansion valve of air conditioner, as it is shown in figure 1, the control method of the present embodiment comprises the steps:
Step S1, when air-conditioning is properly functioning, the opening information of the electric expansion valve of detection storage in real time.
In the present embodiment, when operation of air conditioner, the target opening information of status information and running state of air conditioner information calculating electric expansion valve is set, when target opening information and actual opening information are inconsistent, it is necessary to the aperture of electric expansion valve is adjusted according to air-conditioning.In the aperture adjustment process of electric expansion valve, the opening information of electric expansion valve is detected storage in real time.In the present embodiment, air-conditioning output positive negative pulse stuffing signal adjusts the aperture of electric expansion valve, exports a positive pulse signal, controls electric expansion valve and increases by a step, export a undersuing, controlling electric expansion valve and reduce by a step, pulse signals carries out detection counting simultaneously, a positive pulse signal detected, the opening information+1 of the electric expansion valve of storage, a undersuing, opening information-1 of the electric expansion valve of storage, the electronic expansion valve opening real-time update of storage detected.Such as, the current aperture of air conditioner electronic expansion valve is L, the opening information of the electric expansion valve of air-conditioning storage is L, if air-conditioning one positive pulse signal of output, then the aperture of electric expansion valve is adjusted to L+1, detection of air-conditioning to one positive pulse signal, the electronic expansion valve opening information updating storage is L+1, if air-conditioning one undersuing of output, then the aperture of electric expansion valve is adjusted to L-1, detection of air-conditioning to one undersuing, the electronic expansion valve opening information updating storage is L-1.
Step S2, air-conditioning receives off signal, current aperture L when electric expansion valve remains turned offClose, the opening information of the electric expansion valve of air-conditioning storage is LClose。
In the present embodiment, no matter it is normal shutdown state or abnormal shutdown state, all electric expansion valve is not carried out reset operation, and aperture L when remaining turned offCloseConstant, it is possible to prevent the successive step damage to electric expansion valve excessively during reset operation, simultaneously as the opening information L of electric expansion valveCloseIt is stored in air-conditioning, thus, the opening information of electric expansion valve can be clearly known when next time starts shooting.
Step S3, the shutdown number of times of record air-conditioning.
Step S4, it is judged that the shutdown number of times of air-conditioning, whether more than setting value N, if so, enters step S7, otherwise, enters step S5.
Step S5, when air-conditioning is started shooting again, sets status information according to air-conditioning and calculates the target opening information of electric expansion valve as LOrder, read the opening information L of the electric expansion valve of storage during air-conditioning shutdownClose, generate electronic expansion valve controls signal, control electric expansion valve and reach target aperture.
Concrete, it is L that air-conditioning calculates the electric expansion valve step number needing to adjustOrder-LClose.If LOrder-LCloseFor positive number, then air-conditioning output LOrder-LCloseIndividual positive pulse signal, controls electric expansion valve and adjusts to target aperture LOrderIf, LOrder-LCloseFor negative, then air-conditioning output LOrder-LCloseIndividual undersuing, controls electric expansion valve and adjusts to target aperture LOrder.Air-conditioning exports in the process of positive and negative pulse signal, detects positive negative pulse stuffing signal in real time and updates the electronic expansion valve opening information of storage.
Step S6, starts compressor, and air-conditioning runs according to the state of setting.Enter step S1.
Step S7, when air-conditioning is started shooting again, reads the opening information L of the electric expansion valve of storage during air-conditioning shutdownClose, the repositioning information calculating electric expansion valve is LClose+ M, wherein, M is the constant of >=1.Generate electric expansion valve reseting controling signal, export LClose+ M negative pulse, controls electric expansion valve and is reset to full close position, and now, the electronic expansion valve opening information of storage is LClose-(LClose+ M)=-M, when the electronic expansion valve opening information of storage is negative, taking electronic expansion valve opening information is 0 store, and completes once to reset.Entering step S5, air-conditioning runs the running status after start again.
After air-conditioning resets, shutdown number of times resets, and restarts counting.
In the present embodiment, when air-conditioning powers on first, it is also desirable to carry out a reset operation, control electric expansion valve to fully open position, then adjust to full close position from fully open position.
As in figure 2 it is shown, the present embodiment also proposed a kind of air conditioner electronic expansion valve controls device, including:
Processing module 10, for reading the shutdown number of times of data memory module 13 storage, when the number of times that shuts down is less than or equal to setting value N, if air-conditioning is started shooting, set status information according to air-conditioning and calculate the target opening information of electric expansion valve, and the opening information L of electric expansion valve when reading air-conditioning shutdown last time of data memory module 13 storageClose, generate electronic expansion valve controls signal, export and drive module 14 to electric expansion valve, control electric expansion valve adjustment and reach target aperture.
Or, for reading the shutdown number of times of data memory module 13 storage, when the number of times that shuts down is more than setting value N, if air-conditioning is started shooting, control electric expansion valve and carry out reset operation, during reset operation, processing module 10 calculates the repositioning information of electric expansion valve, generate electric expansion valve reseting controling signal, export and drive module 14 to electric expansion valve, control electric expansion valve closedown and reset.After reset operation, set status information further according to air-conditioning and calculate the target opening information of electric expansion valve, and the opening information L of electric expansion valve when reading air-conditioning shutdown last time of data memory module 13 storageClose, generate electronic expansion valve controls signal, export and drive module 14 to electric expansion valve, control electric expansion valve adjustment and reach target aperture.
The opening information detection module 12 of electric expansion valve, for detecting the opening information of electric expansion valve, and transmits to data memory module 13.
Data memory module 13, for the opening information of real-time storage electric expansion valve, and stores shutdown number of times.
Electric expansion valve drives module 14, for driving described electric expansion valve according to described electronic expansion valve controls signal, adjusts the aperture of described electric expansion valve.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a control method for electronic expansion valve of air conditioner, it is characterised in that described method is:
During operation of air conditioner, the opening information of the electric expansion valve of detection storage in real time；
During air-conditioning shutdown, electric expansion valve keeps current aperture；
When air-conditioning is started shooting again, set status information according to air-conditioning and calculate the target opening information of electric expansion valve, and read the opening information L of the electric expansion valve of storage during air-conditioning shutdown, generate electronic expansion valve controls signal, control electric expansion valve and reach target aperture;
Starting compressor, air-conditioning runs according to the state of setting.
2. control method for electronic expansion valve of air conditioner according to claim 1, it is characterised in that described control method also includes the step recording the shutdown number of times of described air-conditioning.
3. control method for electronic expansion valve of air conditioner according to claim 2, it is characterised in that after described air-conditioning shutdown n times, when again starting shooting, first controls electric expansion valve and carries out reset operation.
4. control method for electronic expansion valve of air conditioner according to claim 3, it is characterized in that, described reset operation comprises the steps: to read the opening information L of the electric expansion valve of storage during air-conditioning shutdown, calculate the repositioning information of electric expansion valve, generate electric expansion valve reseting controling signal, control electric expansion valve and close reset.
5. control method for electronic expansion valve of air conditioner according to claim 4, it is characterised in that the repositioning information of described electric expansion valve is L+M.
6. the air conditioner electronic expansion valve according to claim 1-5 any one controls device, it is characterised in that described control device includes:
Processing module, set status information according to air-conditioning when starting shooting for air-conditioning and calculate the target opening information of electric expansion valve, and read the opening information L of the electric expansion valve of storage during air-conditioning shutdown last time, generate electronic expansion valve controls signal, export to electric expansion valve driving module；
The opening information detection module of electric expansion valve, for detecting the opening information of electric expansion valve；
Data memory module, for the opening information of real-time storage electric expansion valve；
Electric expansion valve drives module, for driving described electric expansion valve according to described electronic expansion valve controls signal, adjusts the aperture of described electric expansion valve.
7. control method for electronic expansion valve of air conditioner according to claim 6, it is characterised in that: described memory module is for recording the shutdown number of times of described air-conditioning.
8. control method for electronic expansion valve of air conditioner according to claim 7, it is characterised in that: described control module is used for controlling electric expansion valve and carries out reset operation.
9. control method for electronic expansion valve of air conditioner according to claim 8, it is characterised in that described control module, for calculating the repositioning information of electric expansion valve, generates electric expansion valve reseting controling signal, controls electric expansion valve and closes reset.
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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 true CN105783350A (en) | 2016-07-20 |
| CN105783350B CN105783350B (en) | 2018-12-18 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019550A (en) * | 2016-10-31 | 2018-05-11 | 株式会社不二工机 | Electric valve control device and the motor operated valve for possessing it |
| CN110094841A (en) * | 2019-04-15 | 2019-08-06 | 青岛海尔空调电子有限公司 | Control method for electronic expansion valve and air-conditioning for air-conditioning |
| 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 |
| CN111417811A (en) * | 2017-11-20 | 2020-07-14 | 株式会社不二工机 | Electric valve control device and electric valve device provided with same |
| WO2020166273A1 (en) * | 2019-02-13 | 2020-08-20 | 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 | Vehicle air conditioner |
| CN111854237A (en) * | 2019-04-28 | 2020-10-30 | 杭州先途电子有限公司 | Control method, control device and controller |
| CN112524773A (en) * | 2020-12-09 | 2021-03-19 | 珠海格力电器股份有限公司 | Method and device for determining opening of electronic expansion valve |
| CN112556129A (en) * | 2020-12-11 | 2021-03-26 | 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 |
| CN112902402A (en) * | 2021-02-26 | 2021-06-04 | 珠海格力电器股份有限公司 | Control method of air conditioner |
| CN113654213A (en) * | 2021-08-18 | 2021-11-16 | 珠海格力电器股份有限公司 | Air conditioner control method and air conditioner |
| CN113959079A (en) * | 2021-09-30 | 2022-01-21 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| 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 |
| WO2023098590A1 (en) * | 2021-12-01 | 2023-06-08 | Qingdao Haier Air Conditioner General Corp., Ltd. | Method of operating an electronic expansion valve in an air conditioner unit |
| WO2023236517A1 (en) * | 2022-06-09 | 2023-12-14 | 青岛海尔空调器有限总公司 | Method and system for resetting electronic expansion valve of air conditioner, and air conditioner |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019550A (en) * | 2016-10-31 | 2018-05-11 | 株式会社不二工机 | Electric valve control device and the motor operated valve for possessing it |
| CN111417811A (en) * | 2017-11-20 | 2020-07-14 | 株式会社不二工机 | Electric valve control device and electric valve device provided with same |
| WO2020166273A1 (en) * | 2019-02-13 | 2020-08-20 | 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 | Vehicle air conditioner |
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| 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 |
| CN111854237A (en) * | 2019-04-28 | 2020-10-30 | 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 |
| CN112524773A (en) * | 2020-12-09 | 2021-03-19 | 珠海格力电器股份有限公司 | Method and device for determining opening of electronic expansion valve |
| CN112556129A (en) * | 2020-12-11 | 2021-03-26 | 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 |
| CN112902402A (en) * | 2021-02-26 | 2021-06-04 | 珠海格力电器股份有限公司 | Control method of 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 |
| CN113654213A (en) * | 2021-08-18 | 2021-11-16 | 珠海格力电器股份有限公司 | Air conditioner control method and 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 |
| CN113959079A (en) * | 2021-09-30 | 2022-01-21 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| WO2023098590A1 (en) * | 2021-12-01 | 2023-06-08 | Qingdao Haier Air Conditioner General Corp., Ltd. | 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 |
| WO2023236517A1 (en) * | 2022-06-09 | 2023-12-14 | 青岛海尔空调器有限总公司 | Method and system for resetting electronic expansion valve of air conditioner, and air conditioner |
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