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JT throttling refrigerating machine gas coupled with regenerative refrigerating machine

A technology of throttling refrigerators and refrigerators, applied in refrigerators, gas cycle refrigerators, refrigeration and liquefaction, etc., can solve the problems of increasing the difficulty and uncertainty of the optimization design of the whole machine, and the unclear thermal coupling mechanism, etc., to achieve Effects of eliminating heat transfer loss, reducing weight and volume, and streamlining components

Active Publication Date: 2015-07-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3. The thermal coupling mechanism is not clear, and there is an inevitable thermal coupling heat exchanger and irreversible heat transfer loss, which increases the difficulty and uncertainty of the optimal design of the whole machine

Method used

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  • JT throttling refrigerating machine gas coupled with regenerative refrigerating machine
  • JT throttling refrigerating machine gas coupled with regenerative refrigerating machine
  • JT throttling refrigerating machine gas coupled with regenerative refrigerating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 As shown, a JT throttling refrigerator air-coupled with the regenerative refrigerator includes two parts: the regenerative refrigerator and the JT throttling refrigeration assembly drawn from the regenerative refrigerator. Tube refrigerator; regenerative refrigerator includes regenerative refrigerator compression device 1, regenerator hot-end heat exchanger 2, regenerator 3, regenerative refrigerator cold-end heat exchanger 4, pulse tube 5, The pulse tube hot end heat exchanger 6 and the phase adjustment mechanism 7; the JT throttling refrigeration assembly includes a throttle valve 8, a throttling refrigeration assembly cold end heat exchanger 9 and a JT compressor 10.

[0034] like figure 2 As shown, the regenerative refrigerator is a GM pulse tube refrigerator, and the compression device 1 of the regenerative refrigerator is composed of a scroll compressor 16 , a high-pressure control valve 17 and a low-pressure control valve 18 .

[0035] The connec...

Embodiment 2

[0040] Such as image 3 As shown, a JT throttling refrigerator air-coupled with a regenerative refrigerator has the same structure as figure 1 The refrigerators shown are basically the same in structure, the difference is that the regenerative refrigerator is a Stirling type pulse tube refrigerator, and the compression device 1 of the regenerative refrigerator is composed of a linear compressor 19 .

[0041] The connections between the components are:

[0042] The compression chamber of the linear compressor 19 communicates with the heat exchanger 2 of the regenerator through a pipeline, the back pressure chamber of the linear compressor 19 communicates with the outlet of the JT compressor 10 through a pipeline, and the hot end heat exchanger 2 of the regenerator, The regenerator 3, the cold-end heat exchanger 4 of the regenerative refrigerator, the pulse tube 5, the hot-end heat exchanger 6 of the pulse tube, and the phase adjustment mechanism 7 are connected in sequence, an...

Embodiment 3

[0046] Such as Figure 4 As shown, a regenerative refrigerator air-coupled JT throttling refrigerator has the same structure as figure 1 The structures of the refrigerators shown are basically the same, the difference being that the JT throttling refrigeration assembly includes a partition wall heat exchanger 11 for accumulating the JT throttling refrigeration effect to obtain a lower refrigeration temperature.

[0047] The connection method of each part is as follows:

[0048] Compression device of recuperative refrigerator 1, regenerator hot end heat exchanger 2, regenerator 3, regenerative refrigerator cold end heat exchanger 4, pulse tube 5, pulse tube hot end heat exchanger 6 and regulator The phase mechanism 7 is connected in turn;

[0049] According to the flow direction of the working fluid, the outlet of the cold-end heat exchanger 4 of the regenerative refrigerator passes through the high-pressure side pipeline of the partition wall heat exchanger 11, the throttle ...

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PUM

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Abstract

The invention discloses a JT throttling refrigerating machine gas coupled with a regenerative refrigerating machine. The JT throttling refrigerating machine gas coupled with the regenerative refrigerating machine comprises two parts, namely, the regenerative refrigerating machine and a JT throttling refrigerating assembly which is led from the regenerative refrigerating machine. The regenerative refrigerating machine comprises a regenerative refrigerating machine cold-end heat exchanger and a regenerative refrigerating machine compression device; the JT throttling refrigerating assembly comprises a throttle valve, a throttling refrigerating assembly cold-end heat exchanger and a JT compressor which are connected with one another in sequence through a pipeline; the throttle valve is connected with the regenerative refrigerating machine cold-end heat exchanger, and the JT compressor is connected with the regenerative refrigerating machine compression device. According to the JT throttling refrigerating machine gas coupled with the regenerative refrigerating machine, the working media of the JT throttling are led out through the regenerative refrigerating machine cold-end directly, and the refrigerating capacity at a lower temperature is obtained by throttling. Compared with a previous common thermal coupling structure, by means of the JT throttling refrigerating machine gas coupled with the regenerative refrigerating machine, the number of parts is reduced, the weight and the size are reduced, partial heat transfer loss is eliminated, utilization of energy is more reasonable and sufficient, and requirements of being efficient, compact and light in weight for space applications can be well met.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a JT throttling refrigerator gas-coupled with a regenerative refrigerator. Background technique [0002] At present, the thermally coupled refrigerator composed of JT throttling refrigerator and regenerative refrigerator has become one of the mainstream refrigeration methods for space telescope detectors. In this combination, there is only heat transfer between the regenerative refrigerator and the JT throttling refrigerator, and no mass exchange of the working fluid occurs. The regenerative refrigerator (such as the pulse tube refrigerator and the Stirling refrigerator) is the JT The throttling refrigerator provides pre-cooling at a certain temperature, so that the gas working medium in the JT refrigerator is pre-cooled below this temperature to obtain a cooling capacity at a lower refrigeration temperature through an adiabatic throttling process. A typical example of spa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14
CPCF25B9/145F25B2309/1412
Inventor 刘东立甘智华陶轩孙潇郭永祥韩东阳王建军
Owner ZHEJIANG UNIV
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