Refrigerator of pulse tube

A pulse tube and refrigerator technology, applied in refrigerators, gas cycle refrigerators, compressors, etc., can solve the problem of insufficient heat exchange, and achieve the effect of improving heat exchange efficiency and cooling characteristics.

Active Publication Date: 2012-06-13
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the same reason as above, there is a problem that the heat exchange cannot be performed sufficiently.

Method used

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  • Refrigerator of pulse tube
  • Refrigerator of pulse tube
  • Refrigerator of pulse tube

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0049] Next, preferred embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

[0050] figure 1 and figure 2 The pulse tube refrigerators 20A and 20B which can implement the present invention are shown. figure 1 The pulse tube refrigerator 20A shown is a two-stage, dual input type pulse tube refrigerator, figure 2 The illustrated pulse tube refrigerator 20B is a two-stage, four-valve type pulse tube refrigerator. First, refer to figure 1 A two-stage double-input type pulse tube refrigerator 20A will be described.

[0051]Since the pulse tube refrigerator 20A is a two-stage type, it has a first-stage regenerator 22A and a second-stage regenerator 22B as regenerators, and also has a first-stage pulse tube 26A and a second-stage pulse tube as pulse tubes. 26B. The high-temperature portion 30 a of the first-stage regenerator 22A, the upper end portion of the first-stage pulse tube 26A, and the upper end portion ...

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PUM

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Abstract

The invention relates to a pulse tube refrigerating machine which is provided with a heat exchanger at the end part of the pulse tube, aiming to improve a heat exchange characteristic of the heat exchanger. The pulse tube refrigerating machine comprises pressure vibration generators (21,23A,23B) which generate pressure vibration to action air, a first grade regenerator and a second grade regenerator (22A,22B), a first grade pulse tube and a second grade pulse tube (26A,26B), phase control mechanisms (28A,28B,27a-27d) and a heat exchanger (40) in the pulse tube, wherein, the heat exchanger (40) consists of a first layer folding part (45) and a second layer folding part (46). The first layer folding part is formed by an alternate lamination of a porous plate (41) with a plurality of pores (42) and a first net part (43) which plays a function of gasket. Moreover, the second layer folding part (46) is formed by a plurality of laminated second net parts (44) which have thinner mesh than that of the first net part (43).

Description

technical field [0001] The present invention relates to a pulse tube refrigerator, in particular to a pulse tube refrigerator provided with a heat exchanger at the end of the pulse tube. Background technique [0002] Generally, a pulse tube refrigerator is composed of a pressure vibration generator, a regenerator, a pulse tube, a phase control mechanism, and the like. This pulse tube refrigerator is quieter than GM refrigerators and Stirling refrigerators, so it is expected to be used as a cooling device for various inspection analyzers such as nuclear magnetic resonance (NMR) and electron microscopes. [0003] Figure 5 , represents a known double-input type pulse tube refrigerator. In this figure, a helium compressor 1, a high-pressure valve 3a, and a low-pressure valve 3b constitute a pressure vibration generator. The high-pressure valve 3 a is arranged on the high-pressure gas output side of the helium compressor 1 , and the low-pressure valve 3 b is arranged on the ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/14
CPCF25B2309/1412F25B9/145
Inventor 齐藤元和山野内寿江
Owner SUMITOMO HEAVY IND LTD
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