CN105276883B - A kind of control method for electronic expansion valve, control device and air-conditioning system - Google Patents
A kind of control method for electronic expansion valve, control device and air-conditioning system Download PDFInfo
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- CN105276883B CN105276883B CN201510741501.XA CN201510741501A CN105276883B CN 105276883 B CN105276883 B CN 105276883B CN 201510741501 A CN201510741501 A CN 201510741501A CN 105276883 B CN105276883 B CN 105276883B
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- expansion valve
- electronic expansion
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- operating parameter
- control method
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Abstract
The present invention relates to a kind of technical field of refrigeration equipment more particularly to control method for electronic expansion valve, control device and air-conditioning systems.Control method for electronic expansion valve includes setting air-conditioner set full working scope health data storehouse, which is included by testing the operating parameter of unit and the corresponding electronic expansion valve opening of each operating parameter under each operating mode obtained；The actual operation parameters of unit in unit running process are detected；By searching for database, search and electric expansion valve is then adjusted according to the electronic expansion valve opening of selection with actual operation parameters corresponding operating parameter in the database, the electronic expansion valve opening according to corresponding to being chosen with it operating parameter checked in.The control device for electronic expansion valve using above-mentioned control method and the air-conditioning system using above-mentioned control device are additionally provided simultaneously.Control method provided by the invention improves the control accuracy of electric expansion valve, and then improves the work efficiency of unit.
Description
Technical field
The present invention relates to technical field of refrigeration equipment more particularly to a kind of control method for electronic expansion valve, control device and
Air-conditioning system.
Background technology
In the operational process of air-conditioning system, cold medium flux is passed according to payload and with larger mobility scale
The throttle part of system such as capillary, heating power expansion valve etc. cannot be guaranteed the stabilization of system since adjustable range is narrow or inaccurate
Operation, and electric expansion valve is since its flow adjustment range is big, actuation techniques are ripe, control is flexibly generally adopted as air-conditioning system
Throttle part.
Electric expansion valve plays throttling and adjusts liquid supply rate as one of compressed steam circulatory system important composition component
Effect.The unit performance of the compressed steam circulatory system is played a crucial role, although electric expansion valve has fine spirit
Activity, but controlling using discharge superheat and suction superheat as master control signal for existing electric expansion valve, use PID
Algorithm realizes the electronic expansion valve controls of unit, and this control becomes since control signal has narrow range in adjustable extent
Measure the problem of small control accuracy is not high enough.
In view of the above-mentioned problems, we need a kind of to solve the adjusting essence in the prior art to electric expansion valve
Control method for electronic expansion valve, control device and the air-conditioning system of the problem of degree difference.
The content of the invention
It is an object of the invention to propose a kind of control method for electronic expansion valve, it is in the prior art right to solve
The problem of degree of regulation of electric expansion valve is poor.
It is another object of the present invention to propose a kind of control device for electronic expansion valve, electricity as described above is used
Sub- expansion valve control method controls the course of work of electric expansion valve.
Another object of the present invention is to propose a kind of air-conditioning system, uses electric expansion valve control as described above
Device processed.
For this purpose, the present invention uses following technical scheme：
A kind of control method for electronic expansion valve, comprises the following steps：
Step A：Air-conditioner set full working scope health data storehouse is set, which includes passing through
The operating parameter of unit and the corresponding electronic expansion valve opening of each operating parameter under each operating mode that many experiments obtain；Often
A operating parameter is corresponding under different operating conditions to be had there are one value, and all values of same operating parameter are one
A continuous numerical intervals, when operating parameter for it is multiple when, the different values of each operating parameter with other operating parameters
Different values, which are combined, forms one group of data group, which corresponds to an electronic expansion valve opening；
Step B：The actual operation parameters of unit in unit running process are detected；
Step C：By searching for database, search and actual operation parameters corresponding operating parameter in the database, root
It is investigated that the operating parameter obtained chooses the electronic expansion valve opening corresponding to it, then according to the electronic expansion valve opening tune of selection
Whole electric expansion valve.
Further, in step, the operating parameter of unit include chilled water temperature, cooling water temperature, evaporating pressure,
In condensing pressure, suction temperature, delivery temperature, compressor circuit, discharge superheat and suction superheat one or two with
On combination.
Further, the value is point value.
Further, in step C, corresponding operating parameter refers to the operating parameter identical with actual operation parameters.
A kind of control device for electronic expansion valve controls electric expansion valve using control method for electronic expansion valve as described above
Aperture.
Further, including control unit, storage unit and detection unit；
Air-conditioner set full working scope health data storehouse, the full working scope health data are provided in the storage unit
Storehouse includes the operating parameter of unit and the corresponding electronic expansion of each operating parameter under each operating mode obtained by many experiments
Valve opening；
The detection unit is used to detect the actual operation parameters of unit in unit running process；
The unit actual operation parameters detected are passed to control unit by the detection unit, described control unit according to
The actual operation parameters of reception searched in database with actual operation parameters corresponding operating parameter in the database, according to
The operating parameter checked in chooses the electronic expansion valve opening corresponding to it, is then adjusted according to the electronic expansion valve opening of selection
Electric expansion valve.
Further, the detection unit includes detecting the temperature sensor of unit operation conditions and/or pressure passes
Sensor.
A kind of air-conditioning system, including control device for electronic expansion valve as described above.
Beneficial effects of the present invention are：The application is by the way that unit actual operation parameters and the parameter in database are compared
It relatively determines the aperture of electric expansion valve, improves the control accuracy of electric expansion valve as a result, and then can be with unit optimal
It is run under operating mode, improves the work efficiency of unit.
Description of the drawings
Fig. 1 is the control flow chart for the electric expansion valve that the specific embodiment of the invention provides.
Specific embodiment
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, present embodiments provide for a kind of control method for electronic expansion valve, comprise the following steps：
Step A：Air-conditioner set full working scope health data storehouse is set, which includes passing through
The operating parameter of unit and the corresponding electronic expansion valve opening of each operating parameter under each operating mode that many experiments obtain；
Step B：The actual operation parameters of unit in unit running process are detected；
Step C：By searching for database, search and actual operation parameters corresponding operating parameter in the database, root
It is investigated that the operating parameter obtained chooses the electronic expansion valve opening corresponding to it, then according to the electronic expansion valve opening tune of selection
Whole electric expansion valve.
In step A：The operating parameter of unit and the corresponding electronic expansion valve opening of each operating parameter under each operating mode
It is the optimal aperture obtained by test of many times.
In step, the operating parameter of unit include chilled water temperature, cooling water temperature, evaporating pressure, condensing pressure,
One or more combination in suction temperature, delivery temperature, compressor circuit, discharge superheat and suction superheat.
The quantity that operating parameter includes is more, and the electronic expansion valve opening obtained by its judgement is more accurate.As preferred
, when unit is Water cooled air conditioners unit, the operating parameter of unit includes chilled water temperature, cooling water temperature, evaporating pressure, cold
Solidifying pressure, suction temperature, delivery temperature, compressor circuit, discharge superheat and suction superheat.
The specific value mode of above-mentioned database is：
Corresponding tool is there are one value under different operating conditions for each operating parameter, and the institute of same operating parameter
There is value for a continuous numerical intervals, and above-mentioned value is point value.It should be noted that above-mentioned value is this Shen for point value
Preferred embodiment please, certain above-mentioned value can also be a section.
Continuous numerical intervals described herein refer to：What each numerical value was arranged in the form of Geometric Sequence, such as freeze
Temperature of the temperature of water under each operating mode be：7℃、8℃、9℃、10℃、11℃、12℃.This specific embodiment is chosen
Be integer situation, the value of certain each parameter can also be decimal.
When operating parameter for it is multiple when, the different values values different from other operating parameters of each operating parameter into
Row combination forms one group of data group, and every group of data group corresponds to an electronic expansion valve opening.
By the combined situation between above-mentioned data, can comprehensively be covered to operating parameter to actually detected,
That is every group detects actual operation parameters, operating parameter corresponding thereto can be found in the database.
Present embodiment includes chilled water temperature with the operating parameter of unit, and condensate temperature, evaporating pressure are row to upper
It states the specific permutation and combination form of data to be described in detail, specifically as described below：
The value of chilled water is：A1、A2；The value of the temperature of condensed water is B1, B2；Evaporating pressure is：C1、C2；
Data below group is may be constructed by above-mentioned data：A1、B1、C1；A1、B1、C2；A1、B2、C1；A1、B2、C2；A2、B1、C1；
A2、B1、C2；A2、B2、C1；A2、B2、C2；The aperture of the corresponding electric expansion valve of above-mentioned each group of data is respectively：Q1、Q2、Q3、
Q4、Q5、Q6、Q7、Q8。
During making data by way of experiment, continuous point value and difference are chosen by way of experiment
Arrangement between data can comprehensively be covered, that is to say, that every group detects reality to actually detected to operating parameter
Operating parameter can find operating parameter corresponding thereto in the database.Which thereby enhance the essence of electric expansion valve adjustment
Exactness.
In step C, corresponding operating parameter refers to operating parameter that is identical with actual operation parameters or closing on.Herein
The operating parameter closed on referred to if not finding operating parameter completely corresponding with actual operation parameters in the database,
So choose the operating parameter with actual operation parameters difference minimum.
In the present embodiment, a kind of control device for electronic expansion valve is additionally provided, uses electronics as described above
Expansion valve control method controls the aperture of electric expansion valve.
Above-mentioned control device for electronic expansion valve includes control unit, storage unit and detection unit.
Air-conditioner set full working scope health data storehouse is provided in storage unit, full working scope health data storehouse bag
The operating parameter of unit and the corresponding electric expansion valve of each operating parameter under each operating mode obtained by many experiments is included to open
Degree.
Detection unit is used to detect the actual operation parameters of unit in unit running process.
The unit actual operation parameters detected are passed to control unit by detection unit, and control unit is according to the reality of reception
Border operating parameter searched in database with actual operation parameters corresponding operating parameter in the database, according to the fortune checked in
Row parameter chooses the electronic expansion valve opening corresponding to it, then adjusts electronic expansion according to the electronic expansion valve opening of selection
Valve.
Specifically, detection unit includes detecting the temperature sensor and/or pressure sensor of unit operation conditions.
In the present embodiment, a kind of air-conditioning system is additionally provided, including electronic expansion valve controls as described above
Device.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention cannot be construed in any way.Based on explanation herein, the technology of this field
Personnel would not require any inventive effort the other specific embodiments that can associate the present invention, these modes are fallen within
Within protection scope of the present invention.
Claims (8)
1. a kind of control method for electronic expansion valve, which is characterized in that comprise the following steps：
Step A：Air-conditioner set full working scope health data storehouse is set, which is included by multiple
Test the operating parameter of unit and the corresponding electronic expansion valve opening of each operating parameter under each operating mode obtained；Each fortune
Row parameter is corresponding under different operating conditions to be had there are one value, and all values of same operating parameter are a company
Continuous numerical intervals, when operating parameter for it is multiple when, the difference of the different values of each operating parameter with other operating parameters
Value, which is combined, forms one group of data group, which corresponds to an electronic expansion valve opening；
Step B：The actual operation parameters of unit in unit running process are detected；
Step C：By searching for database, search with actual operation parameters corresponding operating parameter in the database, according to looking into
The operating parameter obtained chooses the electronic expansion valve opening corresponding to it, then adjusts electricity according to the electronic expansion valve opening of selection
Sub- expansion valve.
2. control method for electronic expansion valve according to claim 1, which is characterized in that in step, the operation ginseng of unit
Number includes chilled water temperature, cooling water temperature, evaporating pressure, condensing pressure, suction temperature, delivery temperature, compressor circuit, row
One or more combination in the gas degree of superheat and suction superheat.
3. control method for electronic expansion valve according to claim 1, which is characterized in that the value is point value.
4. control method for electronic expansion valve according to claim 1, which is characterized in that in step C, corresponding operation ginseng
Number refers to the operating parameter identical with actual operation parameters.
5. a kind of control device for electronic expansion valve, which is characterized in that swollen using the electronics as described in claim 1-4 any one
The aperture of swollen valve control method control electric expansion valve.
6. control device for electronic expansion valve according to claim 5, which is characterized in that including control unit, storage unit
And detection unit；
Air-conditioner set full working scope health data storehouse is provided in the storage unit, full working scope health data storehouse bag
The operating parameter of unit and the corresponding electric expansion valve of each operating parameter under each operating mode obtained by many experiments is included to open
Degree；
The detection unit is used to detect the actual operation parameters of unit in unit running process；
The unit actual operation parameters detected are passed to control unit by the detection unit, and described control unit is according to reception
Actual operation parameters searched in database with actual operation parameters corresponding operating parameter in the database, according to checking in
Operating parameter choose with its corresponding to electronic expansion valve opening, then according to the electronic expansion valve opening of selection adjust electronics
Expansion valve.
7. control device for electronic expansion valve according to claim 6, which is characterized in that the detection unit includes examining
Survey the temperature sensor and/or pressure sensor of unit operation situation.
8. a kind of air-conditioning system, which is characterized in that including the electronic expansion valve controls dress as described in claim 5-7 any one
It puts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510741501.XA CN105276883B (en) | 2015-11-02 | 2015-11-02 | A kind of control method for electronic expansion valve, control device and air-conditioning system |
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| CN201510741501.XA CN105276883B (en) | 2015-11-02 | 2015-11-02 | A kind of control method for electronic expansion valve, control device and air-conditioning system |
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| CN105276883B true CN105276883B (en) | 2018-06-01 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106322870B (en) * | 2016-11-14 | 2019-04-05 | 广东美的暖通设备有限公司 | The control method and control device of electric expansion valve, air conditioner heat pump system |
| CN106895623B (en) * | 2017-02-28 | 2020-05-29 | 青岛海尔空调器有限总公司 | Exhaust temperature control method of air conditioner |
| 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 |
| CN107655174B (en) * | 2017-10-26 | 2020-05-08 | 重庆美的通用制冷设备有限公司 | Air conditioning system and anti-desynchronization control method and device for electronic expansion valve of air conditioning system |
| CN107933872B (en) * | 2017-11-07 | 2020-04-24 | 珠海格力电器股份有限公司 | Electronic expansion valve control method and device for ship water chilling unit |
| CN108317782A (en) * | 2018-02-08 | 2018-07-24 | 广东高而美制冷设备有限公司 | A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture |
| CN109086447B (en) * | 2018-08-20 | 2020-11-20 | 珠海格力电器股份有限公司 | Energy consumption detection method and device for heat pump equipment, computer equipment and storage medium |
| CN109386996A (en) * | 2018-10-08 | 2019-02-26 | 珠海格力电器股份有限公司 | A kind of control method and air-conditioning system of electric expansion valve |
| CN109974239A (en) * | 2019-04-08 | 2019-07-05 | 珠海格力电器股份有限公司 | Multi-joint unit operating condition setting method, device, computer equipment and storage medium |
| CN110360728B (en) * | 2019-08-05 | 2020-11-03 | 珠海格力电器股份有限公司 | Flow adjusting method, medium, device, equipment and air conditioner |
| CN111322801B (en) * | 2020-02-27 | 2021-05-11 | 广东志高暖通设备股份有限公司 | Control method and device of electronic expansion valve |
| CN111623569A (en) * | 2020-06-02 | 2020-09-04 | 江苏拓米洛环境试验设备有限公司 | Temperature control device and method of temperature control equipment |
| CN112082293A (en) * | 2020-09-09 | 2020-12-15 | 珠海格力电器股份有限公司 | Throttle valve control method and device, compressed steam circulation system and air conditioner |
| CN112413937B (en) * | 2020-11-23 | 2022-05-31 | 珠海格力电器股份有限公司 | Water chilling unit and electronic expansion valve control method, device and system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009236347A (en) * | 2008-03-26 | 2009-10-15 | Sanyo Electric Co Ltd | Cooling storage cabinet |
| EP2372272A4 (en) * | 2008-12-19 | 2014-10-15 | Daikin Ind Ltd | Refrigeration equipment |
| CN103423835B (en) * | 2012-04-24 | 2017-04-12 | 杭州三花研究院有限公司 | Control method of vehicle air-conditioning system and vehicle air-conditioning system |
| CN103673209B (en) * | 2012-08-31 | 2018-07-31 | 杭州三花研究院有限公司 | The control method and its air-conditioner control system of air-conditioning system |
| CN103868299B (en) * | 2012-12-13 | 2016-06-15 | 美的集团股份有限公司 | The fine adjustment control method of electric expansion valve and system |
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