Valves for cryogenic refrigerators

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

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13762537, F25B 900

Patent

active

042946000

ABSTRACT:
An improved valve is provided for controlling the flow of working fluid in a cryogenic refrigerator of the type comprising a reciprocating displacer. The valve has a slidable valve member which is arranged to alternately introduce working fluid to or remove working fluid from a cooling chamber in response to reciprocating movement of the displacer. The valve is constructed so as to make certain that sliding movement of the valve member is not restricted by the working fluid.

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