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Cryogenic refrigerator

A technology of ultra-low temperature refrigerators and guiding mechanisms, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of shortening the total length and increasing the refrigerator, and achieve the effect of shortening the total length

Active Publication Date: 2015-03-18
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, due to the constraints of the device for assembling the refrigerator, it is impossible to increase the refrigerator without limit, and in particular, the overall length needs to be shortened.

Method used

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  • Cryogenic refrigerator
  • Cryogenic refrigerator
  • Cryogenic refrigerator

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Embodiment Construction

[0017] Embodiments of the present invention will be described with reference to the accompanying drawings.

[0018] First, the overall structure of the cryogenic refrigerator according to the embodiment will be described. Figure 1 to Figure 3 It is a figure for demonstrating the cryogenic refrigerator which is one embodiment of this invention. In this embodiment, a Gifford-McMahon refrigerator (hereinafter referred to as a GM refrigerator) will be described as an example of a cryogenic refrigerator. The GM refrigerator according to this embodiment includes a compressor 1, a cylinder 2, a housing 3, and the like.

[0019] The compressor 1 recovers low-pressure refrigerant gas from the suction side connected to the low-pressure pipe 1b, compresses the low-pressure refrigerant gas, and supplies high-pressure refrigerant gas to the high-pressure pipe 1a connected to the discharge side. As the refrigerant gas, helium gas can be used, but is not limited thereto.

[0020] In this...

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PUM

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Abstract

In a cryogenic refrigerator, a scotch yoke mechanism includes an eccentric rotating body and a yoke plate that reciprocates by rotation of the eccentric rotating body. A displacer is connected to a yoke plate so as to reciprocate together with the yoke plate. A cylinder houses a displacer, and an expansion space for refrigerant gas is formed in a space with the displacer. An airtight container is provided on a high-temperature side of the cylinder and includes a housing space housing a scotch yoke mechanism and receive the refrigerant gas discharged from the expansion space. The airtight container includes a supporting unit that supports a side portion of the yoke plate so as to restrict tilting of the yoke plate around a rotary shaft of the eccentric rotating body.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2013-187407 filed on September 10, 2013. The entire contents of this Japanese application are incorporated herein by reference. technical field [0002] The invention relates to an ultra-low temperature refrigerator with a scotch yoke mechanism. Background technique [0003] A Gifford-McMahon (GM) refrigerator is known as a refrigerator that generates ultralow temperatures. The GM refrigerator changes the volume of the expansion space by reciprocating the displacer in the cylinder. The refrigerant gas expands in the expansion space by selectively connecting the expansion space to the discharge side and the suction side of the compressor in accordance with the volume change. To reciprocate the displacer, a known Scotch-yoke mechanism is sometimes used, which converts the rotational motion of a crank rotated by a motor into reciprocating movement. [0004] Patent Document 1: Japanese Patent App...

Claims

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Application Information

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IPC IPC(8): F25B9/10
CPCF25B9/14F25B9/10F25B2500/01F25B2500/17
Inventor 森江孝明
Owner SUMITOMO HEAVY IND LTD
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