Wavy laminated microchannel refrigerator

Abstract

The invention relates to a wavy laminated microchannel refrigerator which comprises an upper cover plate, multiple regenerative heat throttling parts laminated up and down, and a lower cover plate laminated sequentially. The regenerative heat throttling parts comprise high-pressure channel plates and low-pressure channel plates laminated up and down; the high-pressure channel plates comprise high-pressure inlet and outlet sections, high-pressure heat exchange sections and high-pressure evaporation chambers arranged sequentially; the high-pressure heat exchange sections comprise first channel sections, high-pressure pre-cooling sections and second-stage channel sections arranged sequentially; first runners and second runners are inwards concave sawtoothed polygonal-line grooves communicating with each other; the inwards concave depth of each sawtoothed polygonal-line groove is smaller than the thickness of each high-pressure channel plate; two end points of each polygonal-line groove are arranged along the length direction of each first channel section; the multiple first runners and the second runners are staggeredly arranged in parallel according to the width directions of the first channel sections; one ends of third runners communicate with the high-pressure pre-cooling sections; and the other ends of the third runners communicate with the high-pressure evaporation chambers.

Description

technical field [0001] The invention belongs to the field of throttling refrigeration, in particular to a wave-type micro-channel throttling refrigerator with a precooling device. Background technique [0002] With the miniaturization of electronic products, rapid cooling technology in a small space has attracted extensive attention from scholars at home and abroad. As a kind of cryogenic refrigerator, the miniature J-T effect throttling refrigerator is characterized by small size, short cooling time, and especially no moving parts. At present, the main J-T effect refrigerators are mostly Hampson type (spiral finned tube type). The stainless steel tube with an outer diameter of 0.5mm-1mm is wound around the mandrel, and the high-pressure gas flows through the entire stainless steel tube and enters the capillary throttling of the tube head. . The throttled low-pressure gas flows back and skims the outer fins of the stainless steel tube to pre-cool the incoming high-pressure...

AI Technical Summary

Problems solved by technology

However, the temperature drop of multi-layer multi-channel micro-channel throttling refrigerators at this stage is limited, which cannot meet the needs of deep low temperature

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