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Pulse-tube refrigerator

A pulse tube refrigerator and pulse tube technology are applied in refrigerators, gas cycle refrigerators, refrigeration and liquefaction, etc., and can solve the problems of unfavorable performance of pulse tube refrigerators, and the distribution of pressure and temperature cannot be well matched. To achieve the effect of simplifying the structure and improving the cooling performance

Inactive Publication Date: 2004-03-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the distribution of pressure and temperature in the commonly used equal-section tube obviously cannot be well matched, so it is obviously unfavorable to improve the performance of the pulse tube refrigerator.

Method used

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Embodiment Construction

[0020] The structural principle and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] refer to figure 1 , 2 , 3. The present invention includes a compressor 1, a regenerator 2, a pulse tube 5, and a gas storage 7. The pulse tube 5 is arranged in the regenerator 2, and the pulse tube 5 and the regenerator 2 are coaxially fixedly installed. The pulse tube 5 It is a nylon vessel that first tapers and then has an equal cross-section. Nylon material has low thermal conductivity and is more conducive to forming a temperature gradient. A cold-end heat exchanger 4 is arranged at the upper end of the upper end, and a metal plate 6 is arranged between the regenerator 2 and the gas storage 7. The surface of the metal plate 6 is provided with a sealing groove 14 matching the regenerator 2, and the metal plate 6 The lower part of the inner and sealed groove 14 is provided with a two-way air inlet 9, the co...

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Abstract

A pulse-tube refrigerator is composed of a compressor, a heat regenerator, a pulse tube and a gas storage. The gas outlet is compressing cavity is connected to the top surface of a metal plate, to which the pulse tube and the heat regenerator are fixed. The filler is filled between the heat regenerator and the pulse tube. The bottom surface of the metal plate is connected to the gas storage. Its advantages include simall size, simple structure, and high refrigerating performance.

Description

1. Technical field [0001] The invention relates to a regenerative low-temperature refrigerator, in particular to a miniature pulse tube refrigerator. 2. Background technology [0002] Pulse tube refrigeration was first invented and patented by Professor Gifford in the United States in the 1960s. The pulse tube refrigerator has no components that work at low temperatures and has high reliability. It can be used in a series of fields such as space, military and high-tech mid-infrared detectors, cooling of electronic detection components, nuclear magnetic resonance and superconductivity in biomedicine. Since the development of pulse tube refrigerators, they are gradually entering the practical stage, and the two aspects of miniaturization and lower refrigeration temperature are particularly important in the above application background. The structure of the existing micro-pulse tube refrigerator is very complicated, which brings great difficulties to the practical application....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/00
CPCF25B2309/1411F25B2309/1406F25B2309/1414F25B2309/1424F25B9/145F25B2309/1417
Inventor 何雅玲吴明陶文铨陈钟颀
Owner XI AN JIAOTONG UNIV