Cryogenic apparatus

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


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13762537, F25B 900




A cryogenic refrigerator is disclosed which essentially comprises a cylinder, a displacer slidably mounted within the cylinder so as to form a chamber whose volume varies with movement of the displacer, drive means mechanically connected to the displacer for causing the displacer to reciprocate, and valve means for continuous flow of a refrigerant fluid into and out of the chamber, the valve means being operable by said displacer so as to (a) cause high pressure refrigerant fluid to enter the chamber during a first selected portion of the displacer's operating stroke and (b) exhaust low pressure fluid from the same chamber during a second selected portion of the displacer's operating stroke.

patent: 2906101 (1959-09-01), McMahon et al.
patent: 2966035 (1960-12-01), Gifford
patent: 3119237 (1964-01-01), Gifford
patent: 3188821 (1965-06-01), Chellis
patent: 3218815 (1965-11-01), Chellis
patent: 3421331 (1969-01-01), Webb
patent: 3600903 (1971-08-01), Chellis
patent: 3609982 (1971-10-01), O'Neil et al.
patent: 3620029 (1971-11-01), Longsworth
patent: 3738837 (1973-05-01), Lobb
patent: 3780088 (1974-01-01), Dehle
patent: 3853147 (1974-12-01), Blair
patent: 4108210 (1978-08-01), Luthe et al.
patent: 4259844 (1981-04-01), Sarcia et al.


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