Regenerative refrigerator with built-in liquefier

A regenerative, liquefier technology, used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of heat transfer loss, complex structure, low efficiency, etc., to achieve high energy utilization, sufficient heat exchange, Small heat loss effect

Active Publication Date: 2017-05-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the traditional small-scale cryogenic refrigerator liquefaction system, this part of the working fluid is not used for throttling or expansion to produce refrigeration or converted into liquid products, and the working fluid is not well utilized in the regenerative refrigerator and liquefaction system
[0006] Therefore, the traditional small cryogenic refrigerator liquefaction method still has the following disadvantages: 1. It is necessary to connect a multi-stage heat exchanger outside the regenerative refrigerator, which has a complicated structure; 2. Multi-stage heat exchange will cause heat transfer loss and low efficiency. ; 3. The working medium in the refrigerator has not been fully utilized

Method used

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  • Regenerative refrigerator with built-in liquefier
  • Regenerative refrigerator with built-in liquefier
  • Regenerative refrigerator with built-in liquefier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 2 As shown, the regenerative refrigerator with a built-in liquefier in this embodiment includes a regenerative refrigeration module and a liquefaction assembly, the regenerative refrigeration module is a pulse tube refrigerator; the regenerative refrigeration module includes a compression device 1, Transfer pipe 2, regenerator hot end heat exchanger 4, regenerator 5, regenerator cold end heat exchanger 6, pulse tube 10, pulse tube hot end heat exchanger 11 and phase adjustment mechanism 13; the liquefaction assembly includes Air supply assembly and liquid collection assembly; the liquid collection assembly includes a one-way valve or one-way capillary 7 , a liquid storage tank 8 , a liquid discharge valve 9 and a steam return line or a steam return valve 12 .

[0037] Such as image 3 As shown, the air supply assembly includes a high pressure air source 3 , a pressure reducing valve 14 , an air intake valve 15 , a buffer tank 16 , an air intake trim val...

Embodiment 2

[0045] Such as Figure 5 As shown, the structure of the regenerative refrigerator with a built-in liquefier in this embodiment is basically the same as that of the regenerative refrigerator in Embodiment 1. The ends are connected, and the supplementary gas enters the regenerative refrigerator from the gas storage at the end of the phase adjustment mechanism 13 .

Embodiment 3

[0047] Such as Image 6 As shown, the structure of the regenerative refrigerator with a built-in liquefier in this embodiment is basically the same as that of the regenerative refrigerator in Embodiment 2, the difference is that the regenerative refrigeration module is a two-stage thermally coupled pulse Tube refrigerating machine, on the basis of the original pulse tube refrigerating machine, a pre-cooling stage pulse tube refrigerating machine is added, which is used for precooling the middle part of the regenerator 5; Heater 6 and precooling heat exchanger 28 are thermally coupled, and finally connected to the room temperature end. This device is used for the liquefaction of helium.

[0048] The connection relationship of each component is:

[0049] The gas supply assembly is connected with the phase adjustment mechanism 13 through pipelines. Compression device 1, transfer pipe 2 regenerator hot end heat exchanger 4, regenerator 5, regenerator cold end heat exchanger 6, ...

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PUM

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Abstract

The invention discloses a regenerative refrigerator with a built-in liquefier. The regenerative refrigerator comprises a regenerative refrigeration module. The regenerative refrigeration module comprises an indoor temperature end unit and a cold end heat exchange unit, and further comprises a gas supplement assembly and a liquid collection assembly, wherein the gas supplement assembly is used for delivering a working medium to go into the regenerative refrigeration module or discharging the working medium out of the regenerative refrigeration module. The gas supplement assembly communicates with the indoor temperature end unit through a pipeline. The liquid collection assembly communicates with the cold end heat exchange unit through a pipeline. According to the regenerative refrigerator with the built-in liquefier, an external liquefied working medium flow channel and a heat exchange for precooling and liquefying the working medium are omitted, so that the regenerative refrigerator is light in weight, compact, more sufficient in heat exchange, little in heat exchange loss and high in energy utilization rate; self-liquefying of the working medium is realized, so that the working medium is sufficiently utilized; the liquid-state working medium can be used as a cold source to provide stable low temperature and realize multi-temperature-level synchronous refrigeration with the regenerative refrigerator.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a regenerative refrigerator with a built-in liquefier. Background technique [0002] Regenerative cryogenic refrigerators are widely used in cryogenic technologies such as gas liquefaction and superconducting cooling due to their small size, light weight, and flexibility. [0003] Traditional small cryogenic refrigerator liquefaction systems, such as figure 1 As shown, it includes regenerative refrigerator, liquefied chemical gas inlet pipeline, heat exchanger, throttle valve or throttle capillary, liquid storage tank, exhaust pipe, and exhaust valve. The gas working medium flows from the room temperature end to the cold end of the regenerative refrigerator through the outside of the regenerative refrigerator, and exchanges heat with the regenerative refrigerator step by step, and the gas working medium is pre-cooled to the conversion temperature at the cold end of the reg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B40/06F25B9/14
Inventor 邱利民黄宸夏曦植晓琴
Owner ZHEJIANG UNIV
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