Air-gap-type thermal switch applied to extremely low temperature refrigerator and heat conducting method thereof

A technology of thermal switch and refrigerator, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of inability to work reliably for a long time, and achieve the effect of simple structure and high reliability

Inactive Publication Date: 2015-05-27
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Due to the large number of alternate conduction and disconnection of heat transfer between the ultra-low temperature refrigerator and the pre-cooling refrigerator, the reliability and life of the thermal ...

Method used

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  • Air-gap-type thermal switch applied to extremely low temperature refrigerator and heat conducting method thereof

Examples

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no. 1 example

[0035] Such as figure 1 As shown, the adsorption pump 1 is flexibly connected to the cold end of the pre-stage pre-cooling refrigerator before starting operation, the first cylinder 4 is flexibly connected to the ultra-low temperature refrigerator, and the second cylinder 6 is flexibly connected to the cold end of the pre-stage pre-cooling refrigerator. connect. When the heating meter 2 is heated (the heating meter 2 is preferably installed on the outer wall of the adsorption pump 1), the temperature of the adsorption pump 1 rises, and the working gas adsorbed on the activated carbon in the adsorption pump 1 is released, and is charged into the first cylinder through the connecting pipe 3 The gap 7 between the body 4 and the second cylinder body 6 makes the gas between the first cylinder body 4 and the second cylinder body 6 be in a continuous flow motion to realize the conduction of the thermal switch; when the heater 2 stops heating, the adsorption pump 1 When the temperatu...

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Abstract

The invention discloses an air-gap-type thermal switch applied to an extremely low temperature refrigerator. The air-gap-type thermal switch applied to the extremely low temperature refrigerator comprises an adsorption pump; a first cylinder; a second cylinder; a heating meter installed on the adsorption pump; a support cylinder located between the first cylinder and the second cylinder and for connecting the both, wherein a gap is installed in the support cylinder; the adsorption pump communicates with the gap through a connecting pipe and forms a closed cavity, and the closed cavity is filled with the working medium gas. The air-gap-type thermal switch is capable of achieving the long-playing, high frequency and reliable alternate breakover and disconnection of the thermal transmission between the extremely low temperature refrigerator and a previous pre-cooler, and is extensively applied to the technical field of the space extremely low temperature refrigeration. In addition, the invention further provides a method for achieving the heat-conducting by using the air-gap-type thermal switch, and the method develops a new route for the long-playing and reliable alternate breakover and disconnection of the thermal transmission under the extremely low temperature conditions.

Description

technical field [0001] The invention relates to the technical field of ultra-low temperature refrigeration, in particular to an air-gap thermal switch applied to an ultra-low temperature refrigerator and a heat conduction method thereof. Background technique [0002] Extremely low temperature refrigeration technology is an important branch of cryogenic engineering, which mainly provides cold sources with a temperature below 1K for relevant application places (note: extremely low temperature in this article refers to mK-level temperature, 1mK=0.001K). [0003] With the continuous development of space technology, the extremely low temperature of space refrigeration is increasingly becoming a necessity for many researches in the fields of microgravity basic physics, space astronomy, space environment and space physics, earth science, new technologies for space applications, and deep space exploration. One of the conditions, for example: using the space infrared detection system...

Claims

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Application Information

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IPC IPC(8): F25B49/04
CPCF25B49/046F25B2500/01F25B2500/06F25B2500/17F25B2600/00
Inventor 罗宝军梁惊涛王兆利闫涛洪国同蔡京辉
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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