Regeneration-type variable-porosity heat regenerator for low temperature refrigerator

A low-temperature refrigerator and porosity technology, applied in refrigerators, superheaters, refrigeration components, etc., can solve the problems of increasing the loss of the regenerator and the unfavorable efficiency of the regenerator, so as to improve the heat recovery efficiency, reduce the internal loss, increase the The effect of cooling capacity
CN103486777AInactive Publication Date: 2014-01-01ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a regeneration-type variable-porosity heat regenerator for a low temperature refrigerator. The heat regenerator comprises a low temperature section and a high temperature section. A plurality of layers of regeneration fillers with different porosities are filled in the heat regenerator, and the porosity range of the regeneration fillers filled in the heat regenerator is 59%-92%. According to different proportions of various losses in the heat regenerator at different temperatures, regeneration fillers with different porosities are adopted in different temperature sections of the heat regenerator. Compared with the traditional heat regenerator filled with fillers with fixed porosity, the heat regenerator effectively reduces inside loss, improves heat regeneration efficiency and improves refrigerator efficiency.
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Description

technical field

[0001] The invention relates to a regenerator, in particular to a variable porosity regenerator for a regenerative low-temperature refrigerator. Background technique

[0002] The regenerative cryogenic refrigerator is a mechanical device that obtains cooling capacity based on the principle of adiabatic expansion of gas. It mainly includes Stirling refrigerators, GM refrigerators and pulse tube refrigerators. It is widely used in aerospace, national defense and military, low temperature superconductivity, medical equipment and other fields. As the core component of the regenerative cryogenic refrigerator, the function of the regenerator is to add and remove heat from the working fluid at different stages of a thermal cycle, and pump the heat from the cold end to the hot end to remove it to achieve refrigeration. the goal of. Usually, the cooling loss caused by the regenerator of a Stirling refrigerator accounts for 57% of the total loss, so the efficiency of...

Claims

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