Wavy laminated microchannel refrigerator

A technology of micro-channel and refrigerator, which is applied in the direction of refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problems of limited temperature drop of refrigerators and cannot meet the needs of deep and low temperatures, and achieve enhanced bypass flow and simplified testing. The effect of the file structure

Active Publication Date: 2019-11-22
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Wavy laminated microchannel refrigerator
  • Wavy laminated microchannel refrigerator
  • Wavy laminated microchannel refrigerator

Examples

Experimental program
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Effect test

Embodiment

[0029] The two-stage wave-shaped laminated micro-channel refrigerator provided by the present invention is composed of a plurality of high-pressure and low-pressure channel plates arranged in a staggered arrangement, and connected by an atomic diffusion fusion welding process. On the outermost layer of the plate, two upper and lower cover plates with a certain thickness are arranged to support and stabilize the entire test piece. Among them, the high and low pressure plates both contain two-stage channel structures and pre-cooling parts separated from each other.

[0030] Such as figure 1 , 2 As shown, the two-stage wave-shaped laminated microchannel refrigerator includes an upper cover plate 30 stacked in sequence, a plurality of high-pressure channel plates 50 and a plurality of low-pressure channel plates 60 stacked up and down staggeredly, a lower cover plate 40 and an air intake pipe 10 , outlet pipe 20.

[0031] The upper cover plate 30 is respectively provided with t...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/02
CPCF25B9/02
Inventor 佘海龙崔晓钰
Owner UNIV OF SHANGHAI FOR SCI & TECH
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