Title:
NMR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/203826
Kind Code:
A1
Abstract:
This NMR device (10) has: a dewar (12) that houses liquid helium; a superconducting magnet disposed in the dewar (12); and a heat shield tank (16) disposed in a manner so as to encircle the dewar (12). A cold chamber (40) includes: a freezer first stage (42) that generates low-temperature helium gas from high-temperature helium gas; and a freezer second stage (44) that generates liquid helium from the ultra-low-temperature helium gas. A transfer tube transfers helium gas and liquid helium. The present invention has: a low-temperature helium gas transfer tube that transfers low-temperature helium gas obtained from the freezer first stage (42) to the heat shield tank (16); and a high-temperature helium gas transfer tube that transfers high-temperature helium gas obtained from the heat shield tank to the freezer first stage (42).
Inventors:
TAKEDA TSUNEHIRO (JP)
Application Number:
PCT/JP2014/065762
Publication Date:
December 24, 2014
Filing Date:
June 13, 2014
Export Citation:
Assignee:
FRONTIER TECHNOLOGY INST INC (JP)
International Classes:
G01R33/3815; G01R33/38; H01F6/00; H01F6/04
Foreign References:
| JP2011203107A | 2011-10-13 | |||
| JP2000193364A | 2000-07-14 | |||
| JP2006201018A | 2006-08-03 | |||
| JP2010197055A | 2010-09-09 |
Other References:
TSUNEHIRO TAKEDA ET AL.: "An Efficient Helium Circulation System with Small GM Cryocoolers", CRYOGENIC ENGINEERING, vol. 43, no. 4, 25 May 2008 (2008-05-25), pages 174 - 179
Attorney, Agent or Firm:
YKI Patent Attorneys (JP)
Patent business corporation YKI international patent firm (JP)
Patent business corporation YKI international patent firm (JP)
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