Cryogenic refrigerator

Details Cryogenic refrigerator Cryogenic refrigerator

1982-07-15

1984-03-27

Capossela, Ronald C.

Refrigeration

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

60520, F25B 900

Patent

active

044386311

ABSTRACT:
The cryogenic refrigerator includes a movable displacer within an enclosure having first and second chambers of variable volume. A refrigerant fluid is circulated in a fluid path between said chambers and correlated with movement of the displacer. A spool valve controls introduction of high pressure fluid and low pressure fluid to said chambers. The displacer movement is controlled by an electric motor which has a cam for reciprocating the spool valve member.

REFERENCES:
patent: 3625015 (1971-12-01), Chellis
patent: 3812682 (1974-05-01), Johnson
patent: 4092829 (1978-06-01), Durenec
patent: 4180984 (1980-01-01), Chellis
patent: 4333755 (1982-06-01), Sarcia

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