A micro-channel throttling refrigerator

Abstract

The invention belongs to the technical field of cryogenic refrigerators, and relates to a microchannel throttling refrigerator, comprising: an upper cover plate, a core body and a lower cover plate, the upper cover plate and the lower cover plate respectively cover the front and back surfaces of the core body; An evaporation chamber is provided; the front of the core is provided with a first microchannel and a throttle channel; the back of the core is provided with a second microchannel; the lower cover is provided with a first air inlet, and the core is provided with a second The air inlet hole is provided with an air outlet hole on the lower cover; the aperture of the first air inlet hole is smaller than the aperture of the air outlet hole; the outlet of the first microchannel is connected with the throttle channel; the outlet of the throttle channel is connected with the inlet of the evaporation chamber The evaporating chamber contains the throttling low-temperature working fluid, the outlet of the evaporating chamber communicates with the inlet of the second microchannel, and the outlet of the second microchannel communicates with the air outlet of the lower cover plate. The micro-channel throttling refrigerator of the present invention is not easy to be damaged, has high reliability, and can achieve the purpose of low temperature.

Description

A microchannel throttling refrigerator technical field [0001] The invention belongs to the technical field of cryogenic refrigerators, and relates to a microchannel throttling refrigerator. Background technique Low-temperature throttling refrigerator utilizes high-pressure gas throttling and cooling effect to realize the refrigeration of the unit to be cooled, and is widely used. It is used in civil and national defense fields such as cryogenic medical equipment, aerospace, and military infrared guidance. Micro-throttle refrigerator is a kind of low-temperature throttle refrigerator, and its structural features include: the initial end provides the system with The high-pressure gas container of the gas source, the counter-flow recuperator behind the high-pressure gas container, and the throttling device behind the regenerator. [0004] The micro-throttle refrigerator carries out cold accumulation by nitrogen or argon in an open regenerative cycle, and performs cool d...

AI Technical Summary

Problems solved by technology

The middle mandrel of the currently used miniature throttling refrigerator only plays a supporting role, but occupies a large space in the refrigerator, so it is severely restricted in miniaturization due to the limitation of the structure of the regenerator

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