Cryogenic refrigerator

Details Cryogenic refrigerator Cryogenic refrigerator

1995-12-12

1997-12-16

Kilner, Christopher

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

F25B 900

Patent

active

056972199

ABSTRACT:
A cryogenic refrigerator which is capable of preventing a deterioration in refrigerating performance and which has high efficiency includes: a first compressor; a first expander having at least one accumulator using an accumulating material comprising a rare earth alloy or compound which has a large specific weight at 10K or below or an accumulating material comprising helium; a sub-expansion space which effects further expansion of a working fluid introduced thereto from an expansion space of the first expander; and a second compressor which compresses the working fluid returning from the sub-expansion space.

REFERENCES:
patent: 5092130 (1992-03-01), Nagao et al.
patent: 5144805 (1992-09-01), Nagao et al.
patent: 5144810 (1992-09-01), Nagao et al.
patent: 5154063 (1992-10-01), Nagao et al.
patent: 5251456 (1993-10-01), Nagao et al.
patent: 5293749 (1994-03-01), Nagao et al.

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