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A miniature throttling refrigerator

A refrigerator and miniature technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of low yield, difficult and complicated processing, etc., achieve smooth welding surface, beautiful welding surface, and eliminate contact thermal resistance Effect

Active Publication Date: 2016-03-30
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

These processes are relatively complicated, require high processing precision, and are easy to block microchannels during processing, which makes processing difficult and the yield rate is relatively low.
At present, China has not fully mastered the processing technology of MMR refrigerators

Method used

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  • A miniature throttling refrigerator
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 , 2 , 3, 4, 5 and 6, the micro-throttle refrigerator of the present invention is a three-channel micro-throttle refrigerator, wherein the middle flow channel is a high-pressure flow channel A, and the flow channels on both sides are the first low-pressure flow channel B 1 and the second low-pressure runner B 2 ; The miniature throttling refrigerator is composed of an upper cover plate 1 and a lower cover plate 5, two heat exchange cores 2, a high-pressure flow channel side wall 3, a cold end head 6 and a hot end head 7; The core body 2 is an upper heat exchange core body and a lower heat exchange core body respectively, both of which are composed of a long flat plate base and upper fins and lower fins on the lower surface vertically fixed on the upper surface of the long flat plate base respectively. Composition; the upper ribs and the lower ribs are flaky fins or needle-like fins with the same height and uniform distribution; the flaky ribs are paral...

Embodiment 2

[0054] Such as Figure 7 , 8 , 9 and 10, the miniature throttling refrigerator of this embodiment 2 is a miniature throttling refrigerator of two flow channels, wherein one channel is a high-pressure flow channel, and the other flow channel is a low-pressure flow channel; The upper cover plate 1 and the lower cover plate 5, the heat exchange core and the cold end head 6; the heat exchange core has a length of 150mm, a width of 14.7mm, an upper The height of the piece is 2.5mm, the width is 0.3mm, the base thickness of the upper and lower ribs is 0.5mm, and a depth of 30mm is processed on the upper and lower ribs, which is the value of the height of the rib or 10% lower than the height of the rib~ 20%, a groove 8 with a width of 0.2mm, in which a groove with a depth of fin height and a width of 0.2mm is processed every 3mm within the distance of 30mm in front of the air inlet of the high and low pressure flow passage; the upper cover plate 1 The length is 150mm, the thickness...

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Abstract

A miniature throttling refrigerator, which is composed of upper and lower cover plates, a heat exchange core and a cold end head: the upper and lower fins are fixed on both sides of the plate base of the heat exchange core; There are grooves distributed at intervals perpendicular to the long side of the flat base; the upper ribs are located in the lower groove of the upper cover; the lower ribs are located in the upper groove of the lower cover; one end of the upper cover has a through hole on the top And the air inlet, the other end is not closed to set a throttling hole; the top of one end of the lower cover plate has a through hole and an air outlet, and the other end has a throttling hole; the upper and lower cover plates and the heat exchange core constitute the throttling refrigeration body; The end seal head is set on the end of the throttling refrigeration main body with a throttling hole; the low-pressure flow channel is formed between the upper cover plate and the upper fin; the high-pressure flow channel is formed between the lower cover plate and the lower fin; the high-temperature and high-pressure fluid flows from the air inlet It enters the high-pressure flow channel, passes through the orifice, and becomes a low-temperature and low-pressure fluid, enters the low-pressure flow channel, and finally flows out from the air outlet; it has a large specific surface area, high heat exchange efficiency, can withstand high-pressure operation, and is easy to scale.

Description

technical field [0001] The invention relates to a miniature throttling refrigerator in the cryogenic field. Background technique [0002] The micro throttling refrigerator in the cryogenic field is a refrigeration device with many characteristics such as simple structure, convenient use, small volume and mass, easy integration of electronic devices, no vibration of the cold head, low noise, and easy miniaturization. As a convenient and reliable cold source, it can be widely used in industrial and experimental research, such as: temperature test of infrared detector, cooling CCD array, cooling of infrared spectrometer specimen, scanning electron microscope specimen cooling, integrated circuit cooling and Temperature stability control, micro-cold pump, cryopreservation of biological tissue, freeze-drying and portable low-temperature treatment equipment, etc. At present, the miniature throttling refrigerator widely used in small and medium-sized and miniature low-temperature r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B23/00F25B41/06F25B41/30
Inventor 公茂琼闫彪吴剑峰王昂
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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