Self-contained cooling apparatus for achieving cyrogenic tempera

Details Self-contained cooling apparatus for achieving cyrogenic tempera Self-contained cooling apparatus for achieving cyrogenic tempera

1997-04-09

1998-12-01

Capossela, Ronald

Refrigeration

Storage of solidified or liquified gas

Including cryostat

62383, 335216, F25B 1900

Patent

active

058423486

ABSTRACT:
A cryogenic cooling apparatus including a vacuum container for containing an object to be cooled, at least one refrigerator for cooling the object, and a thermal switch unit. The refrigerator has a high-temperature cooling stage and a low-temperature cooling stage connected to the high-temperature cooling stage via a low-temperature cylinder. The thermal switch unit has at least one high-temperature heat transfer member attached to the high-temperature cooling stage, at least one low-temperature heat transfer member attached to the low-temperature cooling stage and separated from the high-temperature heat transfer member, and a sealed container provided between the high-temperature cooling stage and the low-temperature cooling stage. The sealed container contains the low-temperature and high-temperature heat transfer members, and a substance capable of existing as a gas or as a solid, heat conduction between the high-temperature heat transfer member and the low-temperature heat transfer member occurring via the substance when the substance is a gas. The sealed container has no communication with outside the sealed container during an operation of the thermal switch unit.

REFERENCES:
patent: 3430455 (1969-03-01), Stuart et al.
patent: 3525229 (1970-08-01), Denhoy
patent: 4689970 (1987-09-01), Ohguma et al.
patent: 5113165 (1992-05-01), Ackermann
patent: 5379601 (1995-01-01), Gillett

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