CN203464568U - Electronic expansion valve control device - Google Patents
Electronic expansion valve control device Download PDFInfo
- Publication number
- CN203464568U CN203464568U CN201320401960.XU CN201320401960U CN203464568U CN 203464568 U CN203464568 U CN 203464568U CN 201320401960 U CN201320401960 U CN 201320401960U CN 203464568 U CN203464568 U CN 203464568U
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- China
- Prior art keywords
- temperature sensor
- expansion valve
- electronic expansion
- outdoor
- control device
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- Expired - Lifetime
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model relates to an electronic expansion valve control device including a controller connected to an electronic expansion valve, and an exhaust temperature sensor, an outer disc temperature sensor, an outdoor temperature sensor and an inner disc temperature sensor that are all connected with the controller. The exhaust temperature sensor is placed at an exhaust pipeline between a compressor exhaust opening and a four-way valve. The outer disc temperature sensor is disposed in an outdoor heat exchanger disc. The outdoor environment temperature sensor is disposed in an environment where an outdoor unit is located. The inner disc temperature sensor is placed in an indoor heat exchanger disc. The electronic expansion valve control device, simple in structure and easy to mount, enables the electronic expansion valve to move more accurately and run more stably and reliably, therefore, the control cost is lowered and economic benefits are increased.
Description
Technical field
The utility model relates to a kind of air-cooled fan coil group control device, especially a kind of control device for electronic expansion valve.
Background technology
At present, adopt electric expansion valve as the air-cooled fan coil group of restricting element, it mainly adopts suction superheat to control electric expansion valve.The defect of this kind of method is that air-cooled fan coil group is under low-temperature heating operating mode, suction superheat is almost nil, now adopts suction superheat to control electric expansion valve, and control ratio is more difficult, easily cause system oscillation fluctuation fluctuation of service, affect the reliability of unit operation.
Summary of the invention
The purpose of this utility model is to provide a kind of the unstable of system operation that overcome, and improves the technical scheme of unit operation reliability.
The technical solution of the utility model is: a kind of control device for electronic expansion valve, comprises the controller being connected on electric expansion valve.This controller is also connected with exhaust gas temperature sensor, outer disk temperature sensor, outdoor temperature sensor and inner disc temperature sensor simultaneously.Wherein, exhaust gas temperature sensor is placed on the gas exhaust piping between exhaust outlet of compressor and cross valve; Outer disk temperature sensor is placed in outdoor heat exchanger dish position; Outdoor environment temperature sensor is placed in the residing environment of off-premises station; Inner disc temperature sensor is placed in indoor heat exchanger dish position.
The beneficial effects of the utility model: the utility model is simple in structure, install easily, can make the action of electric expansion valve more accurate, move more reliable and more stable, thereby reduction control cost, increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, the utility model comprises a controller 1 that is arranged in outer machine and connects and control the electric expansion valve in outer machine.On this controller 1, be also connected with four temperature sensors: exhaust gas temperature sensor 4, outer disk temperature sensor 2, outdoor temperature sensor 3 and inner disc temperature sensor 5 simultaneously.Wherein, exhaust gas temperature sensor 4 is placed on the gas exhaust piping between compressor 8 exhaust outlets and cross valve 9; Outer disk temperature sensor 2 is placed in the position of outdoor heat exchanger 6 dishes; Outdoor environment temperature sensor 3 is placed in the residing environment of off-premises station; Inner disc temperature sensor 5 is placed in the position of indoor heat exchanger 10 dishes.
Operation principle of the present utility model comprises the following steps:
1) according to different pattern (freeze or heat), different environment temperatures, set different discharge superheat desired value Tsh-t;
2) according to the difference △ Tsh of actual exhaust air degree of superheat Tsh and discharge superheat desired value Tsh-t, calculate the adjusted value △ P1 of electronic expansion valve opening.Be specially: under refrigeration mode, Tsh=Td-Thex-o, under heating mode, Tsh=Td-Thex-i, and meet following relation:
Tsh >=0 o'clock, △ P1=︱ a*Tshb ︱
During Tsh < 0, △ P1=-︱ a*Tshb ︱
(wherein a, b is respectively adjustment factor);
3) according to the exhaust gas temperature change amount △ Td in the tune valve cycle, calculate the adjusted value △ P2 of electronic expansion valve opening.Wherein, △ Td=Tdn-Tdn-1, Tdn is a tune valve cycle final vacuum temperature, Tdn-1 is a tune valve cycle front exhaust temperature; △ P2=c* △ Td, (wherein c is adjustment factor);
4) according to delivery temperature Td, calculate the correction △ P3 of electronic expansion valve opening;
Wherein, △ P3=0,90 ℃ of Td <; △ P3=Td-90,90 ℃≤Td≤110 ℃; △ P3=valve standard-sized sheet, 110 ℃ of Td >;
5) adjusted value of electronic expansion valve opening is △ P=△ P1+ △ P2+ △ P3;
6) controller regulates electronic expansion valve opening according to △ P output pulse signal.
The utility model does not relate to partly all prior aries that maybe can adopt same as the prior art to be realized.
Claims (1)
1. a control device for electronic expansion valve, is characterized in that this device comprises the controller (1) being connected with electric expansion valve (7); This controller (1) is also connected with exhaust gas temperature sensor (4), outer disk temperature sensor (2), outdoor temperature sensor (3) and inner disc temperature sensor (5) simultaneously; Wherein, exhaust gas temperature sensor (4) is placed on the gas exhaust piping between compressor (8) exhaust outlet and cross valve (9); Outer disk temperature sensor (2) is placed in outdoor heat exchanger (6) dish position; Outdoor environment temperature sensor (3) is placed in the residing environment of off-premises station; Inner disc temperature sensor (5) is placed in indoor heat exchanger (10) dish position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401960.XU CN203464568U (en) | 2013-07-08 | 2013-07-08 | Electronic expansion valve control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401960.XU CN203464568U (en) | 2013-07-08 | 2013-07-08 | Electronic expansion valve control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203464568U true CN203464568U (en) | 2014-03-05 |
Family
ID=50176929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320401960.XU Expired - Lifetime CN203464568U (en) | 2013-07-08 | 2013-07-08 | Electronic expansion valve control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203464568U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964498A (en) * | 2015-07-30 | 2015-10-07 | 珠海格力电器股份有限公司 | Control method for electronic expansion valve of refrigerating system and refrigerating system |
| CN105091440A (en) * | 2014-05-20 | 2015-11-25 | Tcl空调器(中山)有限公司 | Control method and device of electronic expansion valve |
| CN109489200A (en) * | 2018-11-09 | 2019-03-19 | 珠海格力电器股份有限公司 | A kind of anti-high-pressure control device, air-conditioning and its progress control method |
| CN114963632A (en) * | 2021-09-27 | 2022-08-30 | 青岛海尔新能源电器有限公司 | Control method, device and equipment of electronic expansion valve and storage medium |
-
2013
- 2013-07-08 CN CN201320401960.XU patent/CN203464568U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091440A (en) * | 2014-05-20 | 2015-11-25 | Tcl空调器(中山)有限公司 | Control method and device of electronic expansion valve |
| CN104964498A (en) * | 2015-07-30 | 2015-10-07 | 珠海格力电器股份有限公司 | Control method for electronic expansion valve of refrigerating system and refrigerating system |
| CN109489200A (en) * | 2018-11-09 | 2019-03-19 | 珠海格力电器股份有限公司 | A kind of anti-high-pressure control device, air-conditioning and its progress control method |
| CN114963632A (en) * | 2021-09-27 | 2022-08-30 | 青岛海尔新能源电器有限公司 | Control method, device and equipment of electronic expansion valve and storage medium |
| CN114963632B (en) * | 2021-09-27 | 2023-07-14 | 青岛海尔新能源电器有限公司 | Control method, device and equipment of electronic expansion valve and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |