CN204593993U - A kind of smart electronics expansion valve control system - Google Patents
A kind of smart electronics expansion valve control system Download PDFInfo
- Publication number
- CN204593993U CN204593993U CN201520071669.XU CN201520071669U CN204593993U CN 204593993 U CN204593993 U CN 204593993U CN 201520071669 U CN201520071669 U CN 201520071669U CN 204593993 U CN204593993 U CN 204593993U
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- Prior art keywords
- expansion valve
- temperature
- electric expansion
- pmv
- control system
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Abstract
The utility model discloses a kind of smart electronics expansion valve control system, comprise sensor, single-chip microcomputer is input to for sensing and gathering external parameter and be translated into the signal of telecommunication, it is characterized in that, single-chip microcomputer one end is connected to circuit board, the other end is connected to controller, and described controller is connected with electric expansion valve, and described external parameter includes outdoor environment temperature, outdoor coil temperature, delivery temperature, indoor temperature, indoor coil pipe, suction temperature.The beneficial effect that the utility model has is: electric expansion valve can adapt to the change of varying environment temperature automatically, and reaction fast, efficient, control accuracy is high.
Description
Technical field
The utility model relates to a kind of control system for the electric expansion valve in refrigeration plant, or rather, relates to the controller circuitry improved in the electronic control system of electric expansion valve.
Background technology
In design of air conditioning, electric expansion valve is as electronic control component, and because its precision is high, the advantages such as action fast, accurate, energy-saving effect is obvious, utilization in refrigeration systems, can realize the optimal control of system, is widely used in refrigeration air-conditioner.
Electric expansion valve by controller, actuator and sensor 3 part form, electric expansion valve is as a kind of novel control element, breach the concept of throttle mechanism already, it is the intelligentized important step of refrigeration system, also be important means and the guarantee that refrigeration system optimization is able to real realization, also be the symbol of refrigeration system electromechanical, be used in increasing field.Due to the employing of electric expansion valve, certain system existed in air-conditioner set design process before breaching submits to the idea of heating power expansion valve, and enter the frontier that expansion valve is system optimization service, the development for refrigeration industry plays an important role.
Electric expansion valve regulates evaporimeter liquid supply rate according to pre-set programs, because belonging to electronic type shaping modes, therefore is called electric expansion valve.For the intelligentized control method of the product such as air-conditioning, Teat pump boiler refrigeration system provides condition, it is a kind of rising auto-control energy-saving element.
Electric expansion valve operation principle is when pulse voltage is input on the stator coil of electric expansion valve by certain logical order, produces a rotating excitation field.The rotor that permanent magnet is made is subject to magnetic torque effect and produces rotary motion, and by transmission mechanism, needle is moved up and down, and changes valve port and opens size.Thus realize automatically regulating working medium flow, make refrigeration system keep optimum state.Electric expansion valve its used time from full cut-off to full-gear only needs a few second, and reaction and quick action, there is not static degree of superheat phenomenon, and closing characteristic and speed all artificially can set, be particularly suitable for the use of the violent source pump of fluctuation of operating conditions.Electronic expansion valve controls precision on market is good not, and can not realize automatically adjusting according to the varying environment of outside, provides best cooling or heating effect.
Utility model content
The purpose of this utility model is to provide a kind of smart electronics expansion valve control system, by the circuit board control program Curve guide impeller of controller, solves prior art Problems existing.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of smart electronics expansion valve control system, comprise sensor, be input to single-chip microcomputer for sensing and gathering external parameter and be translated into the signal of telecommunication, single-chip microcomputer one end is connected to circuit board, the other end is connected to controller, and described controller is connected with electric expansion valve.
Further, described external parameter includes outdoor environment temperature, outdoor coil temperature, delivery temperature, indoor temperature, indoor coil pipe, suction temperature.
Compared with prior art, the beneficial effect that the utility model has is the change that electric expansion valve can adapt to varying environment temperature automatically, and reaction fast, efficient, control accuracy is high.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
The name of the Reference numeral in above-mentioned accompanying drawing is called:
1-sensor, 2-single-chip microcomputer, 3-controller, 4-electric expansion valve, 5-circuit board.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited in this.
Embodiment
As shown in Figure 1, a kind of smart electronics expansion valve control system, comprise sensor 1, single-chip microcomputer 2 is input to for sensing and gathering external parameter and be translated into the signal of telecommunication, single-chip microcomputer 2 one end is connected to circuit board 5, the other end is connected to controller 3, and described controller 3 is connected with electric expansion valve 4.The control program that single-chip microcomputer 2 designs according to circuit board 5 is detected the signal of telecommunication transformed by sensor 1 and calculates, and output signal is to the controller 3 be connected with electric expansion valve 4, realize the action control of electric expansion valve 4, described external parameter includes outdoor environment temperature, outdoor coil temperature, delivery temperature, indoor temperature, indoor coil pipe, suction temperature.By the logical program that following content transformation becomes circuit board chip to identify, circuit board is by being connected can controlling electric expansion valve with single-chip microcomputer after burning this program good.
Definition:
T2: indoor evaporate coil temperature
T3: outdoor condenser coil temperature
T4: outdoor environment temperature
T5: suction temperature
Aperture: the size (aperture of usual electric expansion valve is about 0 to 500) representing electric expansion valve open degree.
PMV_COOL1: electric expansion valve first aperture when representing refrigeration or dehumidify, by that analogy.PMV_HEAT1: electric expansion valve first aperture when expression heats, by that analogy.
Degree of superheat SH:SH1=T5-T2 during refrigeration
Degree of superheat SH:SH2=T5-T3 when heating
PMV_COOL_MIN1: the aperture representing minimum permission electric expansion valve during refrigeration
PMV_COOL_MAX: the aperture representing maximum permission electric expansion valve during refrigeration
PMV_HEAT_MIN: the aperture representing minimum permission electric expansion valve when heating
PMV_HEAT_MAX: the aperture representing maximum permission electric expansion valve when heating
When air-conditioning is at running refrigerating, dehumidifying, heating mode, after compressor start, first electric expansion valve is opened to the initial opening of each pattern, keep three minutes, do not regulate in three minutes, within three minutes, to afterwards, adjust an initial opening again according to T4, after initial opening is revised, electronic expansion valve opening keep five minutes constant.Initial opening under each pattern is confirmed by following form:
1.1 refrigeration or dehumidification mode under initial opening determined by T4, specific as follows:
| Parameter | Refrigeration or dehumidifier pattern initial opening |
| T4≤10℃ | PMV_COOL1 |
| 10＜T4≤20℃ | PMV_COOL2 |
| 20＜T4≤30℃ | PMV_COOL3 |
| 30＜T4≤40℃ | PMV_COOL4 |
| 40＜T4≤47℃ | PMV_COOL5 |
| T4＞47℃ | PMV_COOL6 |
Above PMV_COOL1 to PMV_COOL6 totally 6 initial openings is different with T4 (outdoor environment temperature) change.The concrete numerical value of 6 apertures because of different type sizes, the configuration of different air-conditioning refrigeration systems four large parts different and different, best initial value need be recorded by experiment in performance test room to concrete type.The speed of the selected decision electronic expansion valve regulation of best initial value, initial value is selected best, and when machine is started shooting, electronic expansion valve regulation is the fastest, the most easily reaches optimal aperture and has realized higher household air-conditioner.
Initial opening under 1.2 heating modes is determined by T4, as follows:
| Parameter | Heating mode initial opening |
| T4≤-3℃ | PMV_HEAT1 |
| -3℃＜T4≤0℃ | PMV_HEAT2 |
| 0＜T4≤5℃ | PMV_HEAT3 |
| 5＜T4≤10℃ | PMV_HEAT4 |
| 10＜T4≤20℃ | PMV_HEAT5 |
| T4＞20℃ | PMV_HEAT6 |
Above PMV_HEAT1 to PMV_HEAT6 totally 6 initial openings with T4 (outdoor environment temperature) change different with during above refrigeration mode in like manner.
2, after compressor stops, electric expansion valve is opened to maximum impulse (maximum opening).
When 3, heating defrost, the aperture of electric expansion valve is PMV_DEFROST (determine concrete data according to the debugging of performance test room, different type is all different).
4, electronic expansion valve opening regulates automatically according to the degree of superheat
4.1, during refrigeration after T4 temperature adjustment electronic expansion valve opening five minutes, according to the umber of pulse that the degree of superheat SH1 of reality and the current aperture of electric expansion valve control electronic expansion valve events, detected once every 2 minutes.-2<SH1≤4 DEG C, do not regulate; SH1 > 4 DEG C, electronic expansion valve opening is opened greatly; SH1≤-2 DEG C, aperture reduces; The limit aperture that refrigeration detects automatically can be set:
| Condition | Refrigerating limit aperture |
| T4＜20℃ | PMV_COOL_MIN1 |
| T4＞22℃ | PMV_COOL_MIN2 |
| Maximum opening | PMV_COOL_MAX |
After 4.2 temperature of T4 when heating adjustment electronic expansion valve openings five minutes, control according to the degree of superheat SH2 of reality and the current aperture of electric expansion valve the step number that electric expansion valve wants action, every detection in 2 minutes once.-4<SH2≤4 DEG C, do not regulate; SH2 > 4 DEG C, aperture is opened greatly; SH2≤-4 DEG C, aperture reduces; Heat the limit aperture automatically detected:
| Condition | Heat limit aperture |
| T4＜-1℃ | PMV_HEAT_MIN1 |
| T4＞0℃ | PMV_HEAT_MIN2 |
| Maximum opening | PMV_HEAT_MAX |
Be more than the utility model preferred forms, simple change and the replacement of those ordinary skill in the art are all within protection domain of the present utility model.
Claims (2)
1. a smart electronics expansion valve control system, comprises sensor, is input to single-chip microcomputer for sensing and gathering external parameter and be translated into the signal of telecommunication, it is characterized in that, single-chip microcomputer one end is connected to circuit board, and the other end is connected to controller, and described controller is connected with electric expansion valve.
2. a kind of smart electronics expansion valve control system according to claim 1, it is characterized in that, described external parameter includes outdoor environment temperature, outdoor coil temperature, delivery temperature, indoor temperature, indoor coil pipe, suction temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071669.XU CN204593993U (en) | 2015-02-02 | 2015-02-02 | A kind of smart electronics expansion valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071669.XU CN204593993U (en) | 2015-02-02 | 2015-02-02 | A kind of smart electronics expansion valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204593993U true CN204593993U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520071669.XU Expired - Fee Related CN204593993U (en) | 2015-02-02 | 2015-02-02 | A kind of smart electronics expansion valve control system |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783359A (en) * | 2016-05-31 | 2016-07-20 | 昆山台佳机电有限公司 | Control system for electronic expansion valve in central air conditioner |
| CN105864898A (en) * | 2016-06-01 | 2016-08-17 | 珠海格力电器股份有限公司 | Multi-connected air conditioning unit |
| CN106322809A (en) * | 2016-08-31 | 2017-01-11 | 珠海格力电器股份有限公司 | Heating and ventilation equipment and throttle control method thereof |
| CN110481270A (en) * | 2019-08-27 | 2019-11-22 | 江苏阿尔特空调实业有限责任公司 | Air conditioner for electric motor coach throttling control method, device and air-conditioning system |
-
2015
- 2015-02-02 CN CN201520071669.XU patent/CN204593993U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783359A (en) * | 2016-05-31 | 2016-07-20 | 昆山台佳机电有限公司 | Control system for electronic expansion valve in central air conditioner |
| CN105864898A (en) * | 2016-06-01 | 2016-08-17 | 珠海格力电器股份有限公司 | Multi-connected air conditioning unit |
| CN106322809A (en) * | 2016-08-31 | 2017-01-11 | 珠海格力电器股份有限公司 | Heating and ventilation equipment and throttle control method thereof |
| CN110481270A (en) * | 2019-08-27 | 2019-11-22 | 江苏阿尔特空调实业有限责任公司 | Air conditioner for electric motor coach throttling control method, device and air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Nansha District Lanhe town Guangzhou city Guangdong province 511480 smooth three Guang Zhu Lu No. 7 Lane 100 meters north Patentee after: GUANGDONG VKIN INTELLIGENT ENVIRONMENT TECHNOLOGY CO.,LTD. Address before: Nansha District Lanhe town Guangzhou city Guangdong province 511455 smooth three Guang Zhu Lu No. 7 Lane 100 meters north Patentee before: GUANGZHOU WEIJIN AIR CONDITIONER SCIENCE AND TECHNOLOGY CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20220202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |