Stirling cycle gas cooler has cold finger terminal through which gas is pumped through gas cooler in alternate directions

摘要

The sinusoidal helium pressure gas flow (11) from the Stirling cycle compressor passes through a gas cooler (16) into the lower warm section of the finger (12) in a housing (13) having inlet valve (25,27), outlet valve (26,28) and regenerator (21) in a piston (20) so that the cooler only passes the warm gases.