Patent ID: 6260367
Filing Date: 2001-07-17
Classification: F25B

Abstract:
A freezing cycle utilizing a supercritical fluid as a coolant thereof, comprising: a compressor that raises the pressure of the coolant; a gas cooler that cools down the coolant whose pressure has been raised by said compressor; an internal heat exchanger that performs heat exchange for the coolant on an outlet side of said gas cooler and the coolant on an intake side of said compressor; a means for pressure reduction that reduces the pressure of the coolant supplied from said gas cooler via said internal heat exchanger; and an evaporator that evaporates the coolant, whose pressure has been reduced by said means for pressure reduction; wherein the coolant flowing out of said evaporator is made to be returned to said compressor via said internal heat exchanger, characterized in that a means for adjustment is provided that adjusts the quantity of heat exchange performed by said internal heat exchanger.