CN203385151U - Electronic expansion valve control system of module machine - Google Patents
Electronic expansion valve control system of module machine Download PDFInfo
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- CN203385151U CN203385151U CN201320345187.XU CN201320345187U CN203385151U CN 203385151 U CN203385151 U CN 203385151U CN 201320345187 U CN201320345187 U CN 201320345187U CN 203385151 U CN203385151 U CN 203385151U
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- temperature sensor
- expansion valve
- electronic expansion
- heat exchanger
- water
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Abstract
An electronic expansion valve control system of a module machine is characterized by being mainly formed by an environment temperature sensor (14), a cooling exhaust temperature sensor (13), a fin type heat exchanger temperature sensor (10), a water heat exchanger temperature sensor (12), an electronic expansion valve driver (11) and an electronic expansion valve controller (15); the environment temperature sensor (14) is arranged in the environment of a unit; the cooling exhaust temperature sensor (13) is arranged on an exhaust pipe; the fin type heat exchanger temperature sensor (10) is arranged on a liquid separation branch pipeline which is arranged between a fin type heat exchanger (3) and a filter (4); the water heat exchanger temperature sensor (12) is arranged on a pipeline which is arranged between a balance tank (7) and a water heat exchanger (8); the electronic expansion valve controller (15) is arranged in an electric control box; the electronic expansion valve driver (11) is arranged on an electronic expansion valve (5). According to the electronic expansion valve control system of the module machine, the system structure is simple, the cost of an input device of the controller is low, the system control logic is simple, the operation is stable and reliable, the popularization and utilization value is wide, and the like.
Description
Technical field
A kind of Refrigeration Technique of the utility model, especially a kind of electronic expansion valve controls technology, specifically a kind of electronic expansion valve controls system of module machine.
background technology
As everyone knows, existing module unit is used capillary or heating power expansion valve throttling, can't adapt to the refrigerant flow of large condition range and the demand that throttle degree is regulated, thereby making unit be with under some operating mode that liquid is serious, row pressure is crossed high reason and damaged compressor, the reliability of system and security can't be guaranteed, simultaneously can't accuracy-control system, cause the degree of superheat too high, ability can't be brought into play, and the performance of system also can't guarantee, waste resource.
At present, the conventional module unit scarcely possesses electric expansion valve accurately to be controlled, and the general adopts pressure sensor of existing module unit and temperature sensor control electric expansion valve, the shortcoming that set structure is complicated, control is complicated, cost is high.
Summary of the invention
The purpose of this utility model is for existing electronic expansion valve controls complex structure, problem that cost is high; design and a kind ofly can guarantee that the refrigerant flow of unit and throttle degree can adapt to each operating mode and auto-control; can make valve be controlled at optimum aperture and systems stabilisation, protection system operates in the electronic expansion valve controls system of the module machine of the state adapted to most.
The technical solution of the utility model is:
A kind of electronic expansion valve controls system of module machine, it is characterized in that it is mainly by environment temperature sensor 14, during refrigeration, exhaust gas temperature sensor 13, finned heat exchanger temperature sensor 10, water-to-water heat exchanger temperature sensor 12, electronic expansion valve actuator 11 and electronic expansion valve controller 15 form, environment temperature sensor 14 is arranged in the residing environment of unit, exhaust gas temperature sensor 13 is arranged on blast pipe, finned heat exchanger temperature sensor 10 is arranged on the separatory bye-pass between finned heat exchanger 3 and filter 4, water-to-water heat exchanger temperature sensor 12 is arranged on the pipeline between compensator 7 and water-to-water heat exchanger 8, electronic expansion valve controller 15 is arranged in electric-controlled box, electronic expansion valve actuator 11 is arranged on electric expansion valve 5, environment temperature sensor 14, during refrigeration, exhaust gas temperature sensor 13, finned heat exchanger temperature sensor 10, water-to-water heat exchanger temperature sensor 12, electronic expansion valve actuator 11 all is electrically connected with electronic expansion valve controller 15.
Described module machine is the single cooler group that comprises the cold and hot unit of four-way change-over valve 2 or do not comprise four-way change-over valve 2.
Environment temperature sensor 14 is determined initial opening and the target degree of superheat, during refrigeration, discharge superheat calculates by exhaust gas temperature sensor 13 and the difference of finned heat exchanger temperature sensor 10, while heating, discharge superheat calculates by exhaust gas temperature sensor 13 and water-to-water heat exchanger temperature sensor 12, electronic expansion valve controller 15 utilizes the difference of discharge superheat and the target degree of superheat and its changing value to be exported, and electronic expansion valve actuator 11 is controlled to adjust.
The beneficial effects of the utility model are:
The utility model is determined initial opening and the target degree of superheat according to environment temperature sensor 14, during refrigeration, exhaust gas temperature sensor 13 calculates discharge superheat with finned heat exchanger temperature sensor 10 by electronic expansion valve controller 15, while heating, exhaust gas temperature sensor 13 calculates discharge superheat with water-to-water heat exchanger temperature sensor 12 by electronic expansion valve controller 15, utilize the difference of discharge superheat and the target degree of superheat to carry out the ratio adjusting, carry out the differential adjusting with the changing value of discharge superheat, be adjusted to main regulation than row, can effectively control discharge superheat near desired value, but due to the overshoot effect, the effect of with differential, regulating the feedback ratio row to regulate, prevent that overshoot from doing compensation simultaneously, electronic expansion valve controller 15 output signals are used the aperture of electronic expansion valve actuator 11 control valves like this, make the discharge superheat of unit effectively be controlled in a zone of reasonableness.
The utility model is owing to being the automatic control of carrying out electric expansion valve according to environment temperature, delivery temperature and condensation temperature, can not only effectively regulate refrigerant flow and the throttle degree of system under various environment temperatures, and system architecture and control logic have been simplified, protected simultaneously unit under each operating mode steadily, operation efficiently, be a kind of reasonable in design, stability is high, demand is wide control device for electronic expansion valve.
The accompanying drawing explanation
Fig. 1 be the utility model heat with cooling condition under structure catenation principle figure and control system structure chart.
The specific embodiment
Following structure drawings and Examples are further described the utility model.
As shown in Figure 1.
A kind of electronic expansion valve controls system of module machine, it is mainly by environment temperature sensor 14, during refrigeration, exhaust gas temperature sensor 13, finned heat exchanger temperature sensor 10, water-to-water heat exchanger temperature sensor 12, electronic expansion valve actuator 11 and electronic expansion valve controller 15 form, environment temperature sensor 14 is arranged in the residing environment of unit, exhaust gas temperature sensor 13 is arranged on blast pipe, finned heat exchanger temperature sensor 10 is arranged on the separatory bye-pass between finned heat exchanger 3 and filter 4, water-to-water heat exchanger temperature sensor 12 is arranged on the pipeline between compensator 7 and water-to-water heat exchanger 8, electronic expansion valve controller 15 is arranged in electric-controlled box, electronic expansion valve actuator 11 is arranged on electric expansion valve 5, environment temperature sensor 14, during refrigeration, exhaust gas temperature sensor 13, finned heat exchanger temperature sensor 10, water-to-water heat exchanger temperature sensor 12, electronic expansion valve actuator 11 all is electrically connected with electronic expansion valve controller 15.The applied module machine of the utility model is turned round not as Fig. 1, the refrigerant circulation loop that it is comprised of compressor, condenser, evaporimeter and some system units.Wherein, compressor 1 gas outlet is connected with four-way change-over valve 2, finned heat exchanger 3 interfaces are connected with four-way change-over valve 2, finned heat exchanger 3 is connected with filter 4 interfaces, electric expansion valve 5 is connected with filter 4 interfaces and filter 6 interfaces, filter 6 is connected with compensator 7 interfaces, compensator 7 is connected with water-to-water heat exchanger 8 interfaces, and water-to-water heat exchanger 8 interfaces are connected with four-way change-over valve 2; Compressor 1 gas returning port is connected with gas-liquid separator 9 outlets, and gas-liquid separator 9 imports are connected with four-way change-over valve 2, form refrigerant circulation loop.Environment temperature sensor 14, exhaust gas temperature sensor 13, finned heat exchanger temperature sensor 10, electronic expansion valve controller 15, water-to-water heat exchanger temperature sensor 12 and electronic expansion valve actuator 11 form the electronic expansion valve controls system.Environment temperature sensor 14 is arranged in the residing environment of unit, exhaust gas temperature sensor 13 is arranged on blast pipe, finned heat exchanger temperature sensor 10 is arranged on the separatory bye-pass between finned heat exchanger 3 and filter 4, water-to-water heat exchanger temperature sensor 12 is arranged on the pipeline between compensator 7 and water-to-water heat exchanger 8, electronic expansion valve controller 15 is arranged in electric-controlled box, and electronic expansion valve actuator 11 is arranged on electric expansion valve 5.
Electronic expansion valve actuator 11 is controlled by electronic expansion valve controller 15, and the interior control and regulation of electronic expansion valve controller 15 are controlled automatically according to the real-time detected value of environment temperature sensor 14, exhaust gas temperature sensor 13, finned heat exchanger temperature sensor 10 and water-to-water heat exchanger temperature sensor 12.
Operation principle of the present utility model is:
Determine initial opening and the target degree of superheat according to environment temperature sensor 14, during refrigeration, exhaust gas temperature sensor 13 calculates discharge superheat with finned heat exchanger temperature sensor 10 by electronic expansion valve controller 15, while heating, exhaust gas temperature sensor 13 calculates discharge superheat with water-to-water heat exchanger temperature sensor 12 by electronic expansion valve controller 15, utilize difference and its changing value of discharge superheat and the target degree of superheat to be regulated, use the aperture of electronic expansion valve actuator 11 control valves.
The utility model does not relate to partly all prior aries that maybe can adopt same as the prior art to be realized.
Claims (2)
1. the electronic expansion valve controls system of a module machine, it is characterized in that it is mainly by environment temperature sensor (14), exhaust gas temperature sensor during refrigeration (13), finned heat exchanger temperature sensor (10), water-to-water heat exchanger temperature sensor (12), electronic expansion valve actuator (11) and electronic expansion valve controller (15) form, environment temperature sensor (14) is arranged in the residing environment of unit, exhaust gas temperature sensor (13) is arranged on blast pipe, finned heat exchanger temperature sensor (10) is arranged on the separatory bye-pass between finned heat exchanger (3) and filter (4), water-to-water heat exchanger temperature sensor (12) is arranged on the pipeline between compensator (7) and water-to-water heat exchanger (8), electronic expansion valve controller (15) is arranged in electric-controlled box, electronic expansion valve actuator (11) is arranged on electric expansion valve (5), environment temperature sensor (14), exhaust gas temperature sensor during refrigeration (13), finned heat exchanger temperature sensor (10), water-to-water heat exchanger temperature sensor (12), electronic expansion valve actuator (11) all is electrically connected with electronic expansion valve controller (15).
2. the electronic expansion valve controls system of module machine according to claim 1, is characterized in that described module machine is the single cooler group that comprises the cold and hot unit of four-way change-over valve (2) or do not comprise four-way change-over valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320345187.XU CN203385151U (en) | 2013-06-17 | 2013-06-17 | Electronic expansion valve control system of module machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320345187.XU CN203385151U (en) | 2013-06-17 | 2013-06-17 | Electronic expansion valve control system of module machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203385151U true CN203385151U (en) | 2014-01-08 |
Family
ID=49873630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320345187.XU Expired - Lifetime CN203385151U (en) | 2013-06-17 | 2013-06-17 | Electronic expansion valve control system of module machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203385151U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792078A (en) * | 2015-04-29 | 2015-07-22 | 四川长虹空调有限公司 | Device and method for driving electronic expansion valve with multiple communication modes |
| CN104930772A (en) * | 2015-05-14 | 2015-09-23 | 珠海格力电器股份有限公司 | Control method and device for initial openness of electronic expansion valve and air conditioning system |
| CN112594972A (en) * | 2020-12-16 | 2021-04-02 | 南京平欧空调设备有限公司 | Air-cooled heat pump unit and control method of electronic expansion valve in same |
-
2013
- 2013-06-17 CN CN201320345187.XU patent/CN203385151U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792078A (en) * | 2015-04-29 | 2015-07-22 | 四川长虹空调有限公司 | Device and method for driving electronic expansion valve with multiple communication modes |
| CN104930772A (en) * | 2015-05-14 | 2015-09-23 | 珠海格力电器股份有限公司 | Control method and device for initial openness of electronic expansion valve and air conditioning system |
| CN112594972A (en) * | 2020-12-16 | 2021-04-02 | 南京平欧空调设备有限公司 | Air-cooled heat pump unit and control method of electronic expansion valve in same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
|
| CX01 | Expiry of patent term |