CRYOSTAT - JAPAN SUPERCONDUCTOR TECH

Title:

CRYOSTAT

Document Type and Number:

WIPO Patent Application WO/2014/156561

Kind Code:

A1

Abstract:

The purpose of the present invention is to reduce vibration derived from a refrigeration machine. A cryostat comprises: a helium tank (2) which stores liquid helium; a refrigeration machine (5) which is provided above the helium tank (2) and re-liquefies the vaporized liquid helium in the helium tank (2); a cylindrical member (15) which houses the lower part of the refrigeration machine (5) and forms a liquefaction chamber (8) communicating with the helium tank (2); and a buffer tank (10) which stores helium gas and communicates with at least either the space above the surface of the liquid helium in the helium tank (2) or the liquefaction chamber (8). The gas-phase volumes of the helium tank (2) and the liquefaction chamber (8) increase by having the buffer tank (10) communicate with the helium tank (2) and the liquefaction chamber (8).

Inventors:

TAGO KAZUHITO (JP)
OTSUKA AKIHIRO (JP)

Application Number:

PCT/JP2014/055966

Publication Date:

October 02, 2014

Filing Date:

March 07, 2014

Export Citation:

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Assignee:

JAPAN SUPERCONDUCTOR TECH (JP)

International Classes:

H01L39/04; F25B9/00; F25D3/10; H01F6/00

Foreign References:

JPS6465185A	1989-03-10
JPH09129938A	1997-05-16
JP2006184280A	2006-07-13
JP2008151387A	2008-07-03
JPH04180203A	1992-06-26
JP2006184280A	2006-07-13

Other References: