Refrigeration – Cryogenic treatment of gas or gas mixture – Liquefaction
Patent
1988-09-29
1990-08-28
Capossela, Ronald C.
Refrigeration
Cryogenic treatment of gas or gas mixture
Liquefaction
250352, F23B 1902
Patent
active
049514717
ABSTRACT:
In a cryogenic refrigerator having a precooling refrigerating circuit including a cryostat for cooling and maintaining a cryogenic working apparatus which is operated at a very low temperature level, expander for expanding refrigerant gas, such as helium gas, and a J-T circuit for generating cold by Joule-Thomson expanding refrigerant gas precooled by the precooling refrigerating circuit, the present invention prevents the working vibration of the expander from unduly effecting the cryogenic working apparatus and to maintain the cryogenic working apparatus at a very low temperature level for many hours, even while the precooling refrigerating circuit is stopped, thereby enabling a stabilized operation of the cryogenic working apparatus to be performed.
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Kang Yoon M.
Miura Kazuo
Noguchi Satoshi
Ogura Tadashi
Sakitani Katsumi
Capossela Ronald C.
Daikin Industries Ltd.
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