Title:
【発明の名称】液化冷凍機付きクライオスタツト
Document Type and Number:
Japanese Patent JP2821241
Kind Code:
B2
Abstract:
In a cryostat with a liquefaction refrigerator, an object to be cooled, as well as a low-temperature end of the liquefaction refrigerator for cooling the object to be cooled, is contained in a thermally-insulated vessel. The liquefaction refrigerator comprises a cooler and a refrigerator, and the cooler comprises, as main components, a heat exchanger and an expansion valve. The refrigerator includes a mechanically-operated cold-generating device. Within a vacuum vessel in the cryostat, the cooler and the refrigerator are thermally connected together by a releasable thermally-conductive member. Since the refrigerator and the cooler are separate from each other, they can be overhauled independently of each other, and the cooler can be of a compact and lightweight design. Therefore, there can be provided the cryostat which is low in running cost, and has an excellent cooling performance.
Inventors:
Norihide Saho
Takeo Nemoto
Saeki Mitsuru
Takeo Nemoto
Saeki Mitsuru
Application Number:
JP14871990A
Publication Date:
November 05, 1998
Filing Date:
June 08, 1990
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F25D3/10; A61B5/055; F17C3/08; F25B9/00; F25B9/10; F25D13/00; F25J1/00; H01F6/04; H01F7/20; F25D19/00; G01R33/3815; (IPC1-7): H01F6/04; A61B5/055; F25D3/10; F25D13/00
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)