Cryostat with cryo-cooler

Details Cryostat with cryo-cooler Cryostat with cryo-cooler

1990-06-20

1991-01-22

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Including cryostat

250352, F25B 1900

Patent

active

049860771

ABSTRACT:
A cryostat comprises a vacuum vessel, a partition wall for air-tightly separating the vacuum vessel into a first vacuum chamber and a second vacuum chamber, thermal shield tubes encapsulated within the first vacuum chamber, a cooler encapsulated within the thermal shield for containing therein a body to be cooled and cryogen for cooling the body to be cooled, a cryo-cooler disposed outside of the vacuum vessel, which has a cooling portion disposed within the second vacuum chamber, a heat transfer passage along which heat is transferred from the thermal shield tubes to the cooling portion of the cryo-cooler through a part of the partition wall, at least two openings provided in the second vacuum chamber, through which the second vacuum chamber is capable of being opened to atmosphere, and covers each detachably mounted to the respective openings for maintaining the second vacuum chamber at a vacuum condition, on which covers the cryo-cooler is mounted.

REFERENCES:
patent: 4432216 (1984-02-01), Matsuda et al.
patent: 4502296 (1985-03-01), Ogata et al.
patent: 4510771 (1985-04-01), Matsuda et al.
patent: 4796433 (1989-01-01), Bartlett
patent: 4840043 (1989-06-01), Sakitani et al.
patent: 4841268 (1989-06-01), Burnett et al.
patent: 4878352 (1989-11-01), Weber et al.

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