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A pulse tube refrigerator

A pulse tube refrigerator and pulse tube technology, which are applied in refrigerators, gas cycle refrigerators, refrigeration and liquefaction, etc., can solve the problems of restricting refrigeration performance and easy occurrence of bias flow in refrigerant flow, and achieve the effect of suppressing bias flow.

Active Publication Date: 2018-12-04
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the diameter of the regenerator and the pulse tube increases, the flow of the refrigerant in the regenerator and the pulse tube tends to be biased.
The bias flow of refrigerant is likely to limit the improvement of cooling performance

Method used

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  • A pulse tube refrigerator
  • A pulse tube refrigerator
  • A pulse tube refrigerator

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Embodiment Construction

[0039] A pulse tube refrigerator mainly has the following technical problems: 1. Radial inhomogeneity of flow and temperature occurs inside the regenerator; It is difficult to fix the rectifying wire mesh inside the tube; 4. The temperature and pressure inside the refrigerator cannot be directly measured. These problems may have imposed non-negligible restrictions on the performance improvement of high-power Stirling-type pulse tube refrigerators.

[0040] Regarding question one, the inhomogeneity that occurs in the regenerator has several causes. The main reason is that the small aspect ratio regenerator in the high-power pulse tube refrigerator will weaken the radial thermal and hydraulic connections. When the input power and temperature gradient increase beyond the critical value, there will be circulation in the regenerator , the resulting temperature inhomogeneity will further amplify the resulting circulation. Aiming at the phenomenon of radial temperature inhomogeneit...

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Abstract

A refrigerator includes a regenerator, a low-temperature end heat exchanger, a pulse tube, a high-temperature end heat exchanger, and a phase adjustment mechanism, connected in that order. A draft tube is provided inside the regenerator, paralleling the regenerator's axis, and the draft tube can extend into the low-temperature end heat exchanger.

Description

technical field [0001] The invention relates to the field of refrigerators, in particular to a pulse tube refrigerator. Background technique [0002] In recent years, the development of high-power Stirling-type pulse tube refrigerators has attracted attention. [0003] In order to increase the cooling capacity of the pulse tube refrigerator, it is necessary to use a large-diameter regenerator and pulse tube. However, as the diameter of the regenerator and the pulse tube increases, the flow of the refrigerant in the regenerator and the pulse tube tends to drift. The bias flow of refrigerant is likely to limit the improvement of refrigeration performance. Contents of the invention [0004] In view of the above problems, the present invention provides a refrigerator that suppresses the bias flow of the refrigerant in the pulse tube refrigerator. [0005] In order to realize the foregoing invention object, the technical scheme that the present invention takes is as follows:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/14
CPCF25B9/10F25B9/145F25B2309/1407F25B2309/1415F25B2309/1413F25B2309/1418
Inventor 姜晓邱利民
Owner ZHEJIANG UNIV
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