Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of pneumatic gm refrigerator and its control process

A technology for controlling processes and refrigerators, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of high-pressure gas consumption, low efficiency, low theoretical efficiency, etc., and achieve improved efficiency, easy operation, and improved refrigeration efficiency Effect

Active Publication Date: 2017-07-28
TONGJI UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a conventional pneumatic GM refrigerator, the movement of the pushing piston is driven by the high-pressure gas from the compressor through the driving piston. Although the structure is simple, it consumes part of the high-pressure gas from the compressor, so the efficiency is low
If there is only one gas store, although the gas used to control the moving piston is not needed, there is a large irreversible loss in the refrigeration process of the gas from the compressor, and the theoretical efficiency is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of pneumatic gm refrigerator and its control process
  • A kind of pneumatic gm refrigerator and its control process
  • A kind of pneumatic gm refrigerator and its control process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A pneumatic GM refrigerator is a single-stage pneumatic GM refrigerator with two gas storages, and the structure is as follows figure 1 As shown, it includes a drive cylinder 212, a refrigeration cylinder 222, a drive piston 211, a push piston 221 and a cooling heat exchanger 225, the drive cylinder 212 is connected up and down with the refrigeration cylinder 222, the drive piston 211 is connected up and down with the push piston 221, and the drive piston 211 is slidingly connected with the drive cylinder 212, the drive piston 211 can slide in the drive cylinder 212, the drive chamber 214 is formed between the drive cylinder 212 and the drive piston 211, the push piston 221 can slide in the refrigeration cylinder 222, and the push piston 221 and the refrigeration The cylinder 222 is slidingly connected, and the interior of the refrigeration cylinder 222 is divided into a room temperature cavity 223 and a low temperature cavity 224 by the push piston 221. The cooling heat...

Embodiment 2

[0051] A pneumatic GM refrigerator is a single-stage pneumatic GM refrigerator with three gas storages, the structure of which is as follows figure 2 As shown, the difference with the structure of the single-stage pneumatic GM refrigerator with two gas storages in Embodiment 1 is that the driving cavity 214 is connected with the low-pressure gas storage 111, the medium-pressure gas storage 121 and the high-pressure gas storage 131 at the same time, and the driving cavity 214 is connected with the high-pressure gas storage 131. The connecting pipelines of the low-pressure gas storage 111 , the medium-pressure gas storage 121 and the high-pressure gas storage 131 are respectively provided with a low-pressure gas storage valve 112 , a medium-pressure gas storage valve 122 and a high-pressure gas storage valve 132 .

[0052] In this embodiment, the driving piston 211 is integrally connected with the pushing piston 221 .

[0053] The working process of the pneumatic GM refrigerato...

Embodiment 3

[0063] A pneumatic GM refrigerator is a two-stage pneumatic GM refrigerator with three gas storages, the structure of which is as follows image 3 As shown, the difference with the structure of the three-gas storage single-stage pneumatic GM refrigerator in Embodiment 2 is that: the refrigeration cylinder 222 is connected with the second-stage cylinder 232, the push piston 221 is connected with the second-stage push piston 231, and the second The first-stage push piston 231 is slidingly connected with the second-stage cylinder 232, and the second-stage low-temperature cavity 233 is formed between the second-stage push piston 231 and the second-stage cylinder 232, and the bottom end of the second-stage cylinder 232 is connected to the second-stage cooling exchange. Heater 234.

[0064]According to actual needs, also can continue to be provided with the third-stage moving piston and the third-stage cylinder on the second-stage moving piston 231 and the second-stage cylinder 232,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a pneumatic GM refrigerator and its control process. The pneumatic GM refrigerator includes a driving cylinder, a refrigeration cylinder, a driving piston, a pushing piston and a cooling heat exchanger. The driving cylinder and the cooling cylinder are connected up and down, and the driving piston and the pushing piston It is connected up and down, and the driving piston can slide in the driving cylinder. The driving chamber is formed between the driving cylinder and the driving piston. The pushing piston can slide in the cooling cylinder. The inside of the cooling cylinder is divided into a room temperature chamber and a low temperature chamber by the pushing piston. The heater is connected to the low-temperature chamber, the room temperature chamber is connected to the low-pressure gas pipeline and the high-pressure gas pipeline, and the driving chamber is at least connected to a low-pressure gas storage and a high-pressure gas storage. Compared with the prior art, on the basis of the original GM refrigerator, the present invention sets up a low-pressure gas reservoir and a high-pressure gas reservoir on the drive chamber, and uses the gas in the gas reservoir to drive the piston to move, thereby improving the refrigeration efficiency of the refrigerator. And the present invention is simple in structure, easy to operate.

Description

technical field [0001] The invention relates to a low-temperature refrigerator, in particular to a pneumatic GM refrigerator and its control process. Background technique [0002] The GM refrigerator is a low-temperature refrigerator that utilizes high-pressure gas for refrigeration. Usually the high pressure gas is helium. The high-pressure air source and the low-pressure air source are respectively communicated through the switching valve, so that the high-pressure gas flows into the refrigerator for expansion and cooling, and then flows into the low-pressure air source. The gas source is usually a GM compressor with a high pressure gas outlet and a low pressure gas inlet. In a conventional pneumatic GM refrigerator, the movement of the pushing piston is driven by the high-pressure gas from the compressor through the driving piston. Although the structure is simple, it consumes part of the high-pressure gas from the compressor, so the efficiency is low. If there is only...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/14F25B49/00
Inventor 朱绍伟
Owner TONGJI UNIV