Cryogenic refrigeration system for cooling a specimen

Details Cryogenic refrigeration system for cooling a specimen Cryogenic refrigeration system for cooling a specimen

1988-07-06

1989-05-09

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Including cryostat

62 6, 62 78, 62 555, F25B 1900

Patent

active

048277363

ABSTRACT:
A cryogenic refrigeration system for cooling specimen, wherein an expander having one or more heat stations and a cooler at a main refrigeration circuit, which has a specimen mounting unit and is cooled at a temperature lower than the heat station, are housed in first and second vacuum chambers separate from each other, and at the second vacuum chamber is provided an open-close lid which is open to enable a specimen to be taken in or out, whereby the second vacuum chamber only is broken of its vacuum so as to enable the specimen to be exchanged.

REFERENCES:
patent: 4363217 (1982-12-01), Venuti
patent: 4563883 (1986-01-01), Sitte
patent: 4565925 (1986-01-01), Anderson et al.
patent: 4578963 (1986-04-01), Sitte
patent: 4745761 (1988-05-01), Bazaj et al.
patent: 4751828 (1988-06-01), Coulter et al.

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