Cryogenic refrigerator

Details Cryogenic refrigerator Cryogenic refrigerator

1984-04-09

1985-06-25

Capossela, Ronald C.

Refrigeration

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

60520, F25B 900

Patent

active

045245860

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 in a manner so that such flow is correlated with the pressure difference across said valve.

REFERENCES:
patent: 2966035 (1960-12-01), Gifford
patent: 3188818 (1965-06-01), Hogan
patent: 3218815 (1965-11-01), Chellis et al.
patent: 4305741 (1981-12-01), Sarcia
patent: 4438631 (1984-03-01), Sarcia

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