CN203605563U - Control system of electronic expansion valve - Google Patents
Control system of electronic expansion valve Download PDFInfo
- Publication number
- CN203605563U CN203605563U CN201320665866.5U CN201320665866U CN203605563U CN 203605563 U CN203605563 U CN 203605563U CN 201320665866 U CN201320665866 U CN 201320665866U CN 203605563 U CN203605563 U CN 203605563U
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- CN
- China
- Prior art keywords
- expansion valve
- temperature sensor
- electronic expansion
- compressor
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a control system of an electronic expansion valve. The control system of the electronic expansion valve comprises a compressor, a condenser, the electronic expansion valve and an evaporator, wherein a circulation circuit is formed by the compressor, the condenser, the electronic expansion valve and the evaporator, an inlet of the evaporator and an outlet of the evaporator are provided with an inlet end temperature sensor and an outlet end temperature sensor respectively, and an outlet of the compressor is provided with an exhaust gas temperature sensor. A controller which is connected with the compressor, the inlet end temperature sensor, the outlet end temperature sensor, the exhaust gas temperature sensor and the electronic expansion valve is further arranged. According to the control system of the electronic expansion valve, temperature signals at the two ends of the evaporator are detected through the inlet end temperature sensor and the outlet end temperature sensor, temperature signals of the outlet of the compressor is detected through the exhaust gas temperature sensor, the overall operation condition of the system can be judged by comparing all the signals with set signal values through the controller, the real-time opening degree of the electronic expansion valve is controlled, and real-time and accurate control of the electronic expansion valve is achieved. The control system of the electronic expansion valve is applied to the electrical control field.
Description
Technical field
The utility model relates to a kind of control system of electric expansion valve.
Background technology
In heat pump in the past; in the time that system overheat degree does not reach target setting value; for the good evaporation effect of assurance system; controller can be controlled electric expansion valve and turn down; the refrigerant flow that enters evaporimeter to reduce carrys out Hoisting System evaporation effect; if but not constantly turn down electric expansion valve because of system overheat degree; will cause compressor return air amount constantly to reduce; delivery temperature constantly uprises; in the time of excessive discharge temperature; system can be jumped exhaust protection, thereby affects the normal stable operation of system.
On the contrary, in the time that system overheat degree exceedes target setting value, controller can be controlled electric expansion valve and hold greatly, the refrigerant flow that enters evaporimeter by increase reduces system overheat degree, if but because system overheat Du Taigao does not disconnect large electric expansion valve, delivery temperature is step-down constantly, in the time that delivery temperature is too low, can cause the liquid that returns of compressor to be had a strong impact on, be easy to damage compressor, reduce the service life of compressor.
Utility model content
For addressing the above problem, the utility model provides in real time a kind of and controls accurately the electronic expansion valve controls system of electronic expansion valve opening.
The utility model solves the technical scheme that its technical problem adopts:
A kind of electronic expansion valve controls system, comprise the compressor, condenser, electric expansion valve and the evaporimeter that form closed circuit, the import and export of evaporimeter are respectively equipped with inlet side temperature sensor and go out to hold temperature sensor, the outlet of compressor is provided with exhaust gas temperature sensor, is also provided with and compressor, inlet side temperature sensor, the controller that goes out to hold temperature sensor, exhaust gas temperature sensor and electric expansion valve to be all connected.
Be further used as the improvement of technical solutions of the utility model, electric expansion valve is arranged between condenser and inlet side temperature sensor.
The beneficial effects of the utility model: this electronic expansion valve controls system is by inlet side temperature sensor and go out to hold temperature sensor to detect the temperature signal at evaporimeter two ends, detect the temperature signal of compressor outlet by exhaust gas temperature sensor simultaneously, by controller, each signal and setting signal value are contrasted to judge the ruuning situation of entire system, to control the real-time aperture of electric expansion valve, reach electric expansion valve accurate control in real time.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model embodiment overall structure schematic diagram.
The specific embodiment
With reference to Fig. 1, the utility model is a kind of electronic expansion valve controls system, comprise the compressor 1, condenser 2, electric expansion valve 3 and the evaporimeter 4 that form closed circuit, the import and export of evaporimeter 4 are respectively equipped with inlet side temperature sensor 7 and go out to hold temperature sensor 6, the outlet of compressor 1 is provided with exhaust gas temperature sensor 8, is also provided with and compressor 1, inlet side temperature sensor 7, the controller 5 that goes out to hold temperature sensor 6, exhaust gas temperature sensor 8 and electric expansion valve 3 to be all connected.
As the utility model preferred embodiment, electric expansion valve 3 is arranged between condenser 2 and inlet side temperature sensor 7.
This electronic expansion valve controls system is by inlet side temperature sensor 7 and go out to hold temperature sensor 6 to detect the temperature signal at evaporimeter 4 two ends, detect by exhaust gas temperature sensor 8 temperature signal that compressor 1 exports simultaneously, by controller 5, each signal and setting signal value are contrasted to judge the ruuning situation of entire system, to control the real-time aperture of electric expansion valve 3, reach electric expansion valve accurate control in real time.
Inlet side temperature sensor 7 and the temperature that goes out to hold temperature sensor 6 to import and export evaporimeter 4 detect respectively, then the temperature signal of the evaporimeter collecting 4 being imported and exported sends to controller 5, meanwhile, exhaust gas temperature sensor 8 also constantly detects delivery temperature, then also the exhaust temperature signal collecting is sent to controller 5, in the time that controller 5 judges that system overheat degree is inadequate, can control that electric expansion valve 3 turns down until delivery temperature is greater than 90 and automatically stop action while spending.
On the contrary, spend when high when controller 5 judges system overheat, can control electric expansion valve 3 and hold and when large until delivery temperature is spent lower than 50, automatically stop action.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (2)
1. an electronic expansion valve controls system, it is characterized in that: comprise the compressor (1) that forms closed circuit, condenser (2), electric expansion valve (3) and evaporimeter (4), the import and export of described evaporimeter (4) are respectively equipped with inlet side temperature sensor (7) and go out to hold temperature sensor (6), the outlet of described compressor (1) is provided with exhaust gas temperature sensor (8), also be provided with and described compressor (1), inlet side temperature sensor (7), go out to hold temperature sensor (6), the controller (5) that exhaust gas temperature sensor (8) is all connected with electric expansion valve (3).
2. electronic expansion valve controls system according to claim 1, is characterized in that: described electric expansion valve (3) is arranged between condenser (2) and inlet side temperature sensor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320665866.5U CN203605563U (en) | 2013-10-24 | 2013-10-24 | Control system of electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320665866.5U CN203605563U (en) | 2013-10-24 | 2013-10-24 | Control system of electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203605563U true CN203605563U (en) | 2014-05-21 |
Family
ID=50718233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320665866.5U Expired - Fee Related CN203605563U (en) | 2013-10-24 | 2013-10-24 | Control system of electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203605563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222441A (en) * | 2015-09-01 | 2016-01-06 | 珠海格力电器股份有限公司 | The control method of refrigeration system and device |
| CN106196666A (en) * | 2016-08-23 | 2016-12-07 | 合肥天鹅制冷科技有限公司 | There is the refrigeration system that the highest evaporating pressure controls |
-
2013
- 2013-10-24 CN CN201320665866.5U patent/CN203605563U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222441A (en) * | 2015-09-01 | 2016-01-06 | 珠海格力电器股份有限公司 | The control method of refrigeration system and device |
| CN105222441B (en) * | 2015-09-01 | 2018-11-23 | 珠海格力电器股份有限公司 | The control method and device of refrigeration system |
| CN106196666A (en) * | 2016-08-23 | 2016-12-07 | 合肥天鹅制冷科技有限公司 | There is the refrigeration system that the highest evaporating pressure controls |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20211024 |