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Heat switch

A thermal switch and heat source technology, applied in the field of refrigeration and low temperature, can solve the problems of small switching ratio, low reliability, and high processing accuracy requirements, and achieve the effects of large switching ratio, small heat transfer thermal resistance, and high heat transfer stability.

Pending Publication Date: 2019-03-26
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a thermal switch to at least solve one of the technical problems of the thermal switch in the prior art, such as small on-off ratio, low reliability, high processing precision requirements and uncompact structure

Method used

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0029] It should be not...

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PUM

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Abstract

The invention relates to the field of the refrigerating and cryogenic technology and discloses a heat switch. The heat switch comprises a moving part, a fixed part and an expansion part. The moving part is arranged towards a heat source. A cold source is mounted on the fixed part. The expansion part is arranged between the moving part and the fixed part. The two ends of the expansion part are connected with the moving part and the fixed part. The expansion part, the moving part and the fixed part jointly form an enclosed first cavity. The first cavity is filled with a working medium changing along with the temperature. The working medium expands or shrinks in the first cavity to drive the expansion part to stretch or retract. The expansion part stretches and retracts to drive the moving part to move relative to the fixed part, so that the moving part communicates with or is disconnected from the heat source. The heat switch has the advantage that the switch ratio is large.

Description

technical field [0001] The invention relates to the technical field of refrigeration and low temperature, in particular to a thermal switch. Background technique [0002] Currently, a thermal switch refers to a device capable of controlling thermal contact or thermal separation between two objects. In the field of refrigeration and cryogenic technology, many applications require that two components can be thermally connected and separated under different working conditions. For example, with the development of space infrared detection technology, higher life and reliability requirements are put forward for mechanical refrigeration technology. Due to the non-repairability of space refrigerators, it is necessary to carry out a backup design for space refrigerators in the same system, in order to reduce or To eliminate the parasitic heat leakage of the backup refrigerator in the non-working state, it is necessary to connect the space refrigerator to the cooled device through a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F27/00
CPCF28F27/00
Inventor 赵雅楠梁惊涛
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI