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Patent Searching and Data


Title:
CRYOGENIC COOLER
Document Type and Number:
Japanese Patent JPH08145486
Kind Code:
A
Abstract:

PURPOSE: To provide a cryogenic cooler in which the deterioration of the degree of vacuum of a vacuum layer is eliminated, an ultra-high vacuum is stably maintained for a long time, and a predetermined power can be reduced.

CONSTITUTION: An outer shell 13 is provided at the outside of a vacuum exhaust valve 6, and airtightly connected to a vacuum heat insulation outer tank 4 for a superconducting magnet by a metal sealing member 11. The part of the shell 13 is formed of a breaking means 8. The means 8 is formed of a breaking member 9 and a breaking plate destroying teeth 10. When the internal pressure of the shell becomes a predetermined value or more, the member 9 is brought into contact with the teeth 10 so that the member 9 is destroyed.


Inventors:
Nakagawa, Tetsutaro
Application Number:
JP1994000286599
Publication Date:
June 07, 1996
Filing Date:
November 21, 1994
Export Citation:
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Assignee:
AISIN SEIKI CO LTD
International Classes:
F25B9/00; F17C13/06; (IPC1-7): F25B9/00