Refrigeration – Storage of solidified or liquified gas – With conservation of cryogen by reduction of vapor to liquid...
Patent
1991-01-15
1992-11-17
Capossela, Ronald C.
Refrigeration
Storage of solidified or liquified gas
With conservation of cryogen by reduction of vapor to liquid...
62 511, 62227, 250352, F17C 502
Patent
active
051632977
ABSTRACT:
A device for preventing evaporation of liquefied gas in a liquefied gas reservoir used to cool an EDS detector of an electron microscope or the like is disclosed. A cold head of a cryogenic refrigerator is disposed so as to fit an opening of the top of the liquefied gas reservoir and moreover a temperature measuring instrument or a level gauge is disposed within the liquefied gas reservoir so that the cryogenic refrigerator is automatically operated depending on the temperature within the liquefied gas reservoir or on change in the liquid level of liquefied gas. In the manner vaporized gas is condensed and reliquefied, thus suppressing wasteful dissipation of vaporized gas.
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Irie Mitsunori
Kawaguchi Etsuji
Sugata Michio
Yani Masayoshi
Capossela Ronald C.
Iwatani international Corporation
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