Refrigeration system and reciprocating compressor therefor with

Details Refrigeration system and reciprocating compressor therefor with Refrigeration system and reciprocating compressor therefor with

1978-12-11

1981-01-13

King, Lloyd L.

Refrigeration

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

277205, F25B 900, F16J 908, F16J 1532, F16J 1548

Patent

active

042441927

ABSTRACT:
A Stirling refrigeration system includes a compressor having a piston which reciprocates within a cylinder. The piston compresses and expands a working volume of gas to cause sinusoidal variations in gas pressure in a cold finger unit. The mean pressure in the working volume is stabilized, despite gas leakage past the compressor piston seals, by a U-cross-section annular-lip seal in a groove surrounding the piston. A spacer ring within the annular-lip seal and extending beyond the legs of the seal retains the seal away from one of the opposing faces of the groove to insure that the seal consistently tends to permit greater gas leakage in a predetermined direction. With gas leakage in that predetermined direction, the gas pressure reaches a steady condition in which the mean pressure in the working volume of gas is stable relative to the pressure in an hermetically sealed larger crankcase volume of gas on the opposite side of the piston.

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patent: 2979350 (1961-04-01), Lansky
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patent: 3653672 (1972-04-01), Felt
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patent: 3877239 (1975-04-01), Leo
patent: 3901517 (1975-08-01), Heathcott
patent: 3960169 (1976-06-01), Orth et al.

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