CN212109086U

CN212109086U - Component for hot gas bypass of refrigeration system

Info

Publication number: CN212109086U
Application number: CN202020623587.2U
Authority: CN
Inventors: 周定山; 祝新生; 江再宽; 朱君
Original assignee: Suzhou Aode Machinery Co ltd
Current assignee: Suzhou Aode high end equipment Co.,Ltd.
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-12-08
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses an subassembly for refrigerating system steam bypass, including inlet line and outlet line, be connected with proportional control valve between inlet line and the outlet line, its theory of operation is through temperature sensor monitoring control object temperature, sets for the target temperature on valve controller, and proportional control valve opens the step number through PID control to realize the bypass refrigerant flow of relative accuracy, proportional control valve still is connected with microcomputer control ware, and microcomputer control ware is connected with temperature sensor. The utility model has the advantages that: compared with the traditional start-stop control, the proportional control can realize stable response and transition, the actual control effect temperature fluctuation is small, and the control curve is smooth and stable.

Description

Component for hot gas bypass of refrigeration system

Technical Field

The utility model relates to a refrigerating system technical field specifically is a subassembly for refrigerating system steam bypass.

Background

For some refrigeration units with high requirements on temperature control accuracy, such as laser water coolers, water coolers used in the testing industry, etc., in order to achieve an accurate target refrigeration temperature, a hot gas bypass scheme is generally adopted to control the output refrigeration capacity of a compressor. When the actual temperature approaches the target temperature, the compressor must be continuously operated, but the cooling capacity of the compressor is sometimes larger than the actual heating capacity, and the cooling capacity output by the compressor needs to be deloaded and adjusted. The method is characterized in that an exhaust pipe of the compressor is communicated with an inlet of an electromagnetic valve, an outlet of the electromagnetic valve is communicated with an inlet of an air suction pipe or an evaporator, and the amount of the hot air of the bypass is controlled by controlling the on-off of the electromagnetic valve, so that the target temperature is controlled within a target range.

In practical engineering application, the method can realize higher temperature control precision for some small refrigerating units, but the electromagnetic valve frequently acts in the control process, and the service life is adversely affected.

In order to promote on current scheme to realize more stable temperature accuracy control, and solve the problem that the solenoid valve frequently moves easy damage, the utility model provides an adopt the scheme of proportional control valve control bypass flow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an subassembly for refrigerating system steam bypass to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an subassembly for refrigerating system hot gas bypass, includes inlet line and outlet line, be connected with proportional control valve between inlet line and the outlet line, proportional control valve still is connected with microcomputer control ware, and microcomputer control ware is connected with temperature sensor.

Preferably, the inlet pipeline is connected with a branch pipe branched from a discharge pipe section of the compressor.

Preferably, the outlet pipeline is communicated with a suction port of the compressor or an inlet of the evaporator.

Preferably, the microcomputer controller is used for controlling the proportional control valve, and the microcomputer controller interface comprises a power supply interface, a motor controller line interface and a temperature sensor interface.

Preferably, the proportional control valve mainly comprises a valve body, a valve core and a stepping motor.

Preferably, the valve body part of the proportional control valve is respectively connected with the inlet pipeline and the outlet pipeline, and a welding interface is reserved.

Advantageous effects

The utility model provides a subassembly for refrigerating system steam bypass compares traditional start-stop control, and steady response and transition can be realized to this kind of proportional control, and actual control effect temperature is undulant little, and the control curve is level and smooth stable.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Reference numerals

1-inlet pipeline, 2-outlet pipeline, 3-proportion regulating valve, 4-microcomputer controller and 5-temperature sensor.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

Examples

As shown in fig. 1, an assembly for hot gas bypass of a refrigeration system comprises an inlet pipeline 1 and an outlet pipeline 2, wherein the inlet pipeline 1 and the outlet pipeline 2 are connected with a proportional control valve 3, the working principle of the assembly is that the temperature of a control object is monitored by a temperature sensor 5, a target temperature is set on a valve controller, the proportional control valve 3 controls the opening steps through PID, so that relatively accurate bypass refrigerant flow is realized, the proportional control valve 3 is further connected with a microcomputer controller 4, and the microcomputer controller 4 is connected with the temperature sensor 5.

Preferably, the inlet line 1 is connected to a branch line from the compressor discharge line section.

Preferably, the outlet line 2 communicates with the compressor suction or evaporator inlet.

Preferably, the microcomputer controller 4 is used for controlling the proportional control valve 3, and the interface of the microcomputer controller 4 comprises a power supply interface, a motor controller line interface and a temperature sensor interface.

Preferably, the proportional control valve 3 mainly comprises a valve body, a valve core and a stepping motor.

Preferably, the valve body part of the proportional control valve 3 is respectively connected with an inlet pipeline 1 and an outlet pipeline 2, and a welding interface is reserved.

When the component works, the inlet pipeline is connected with a branch pipe which is divided from the exhaust pipe section of the compressor, the outlet pipeline is communicated with the air suction port of the compressor or the inlet of the evaporator, and the temperature sensor is arranged at a temperature control object.

The proportional controller adopts a microcomputer controller, and the interface of the proportional controller comprises a power supply interface, a motor controller line interface and a temperature sensor interface.

The valve body part of the proportional control valve is connected with an inlet pipeline and an outlet pipeline, and a welding interface is reserved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. An assembly for hot gas bypass of a refrigeration system, comprising an inlet line (1) and an outlet line (2), characterized in that: the inlet pipeline (1) and the outlet pipeline (2) are connected with the proportion regulating valve (3), the proportion regulating valve (3) is further connected with the microcomputer controller (4), and the microcomputer controller (4) is connected with the temperature sensor (5).

2. An assembly for a hot gas bypass for a refrigeration system as set forth in claim 1 wherein: the inlet pipeline (1) is connected with a branch pipe branched from a compressor exhaust pipe section.

3. An assembly for a hot gas bypass for a refrigeration system as set forth in claim 1 wherein: the outlet pipeline (2) is communicated with a suction port of the compressor or an inlet of the evaporator.

4. An assembly for a hot gas bypass for a refrigeration system as set forth in claim 1 wherein: the microcomputer controller (4) is used for controlling the proportion regulating valve (3), and the interface of the microcomputer controller (4) comprises a power supply interface, a motor controller line interface and a temperature sensor interface.

5. An assembly for a hot gas bypass for a refrigeration system as set forth in claim 1 wherein: the proportional control valve (3) mainly comprises a valve body, a valve core and a stepping motor.

6. An assembly for a hot gas bypass for a refrigeration system as set forth in claim 1 wherein: the valve body part of the proportional control valve (3) is respectively connected with the inlet pipeline (1) and the outlet pipeline (2), and a welding interface is reserved.