Patent ID: 6662576
Filing Date: 2003-12-16
Classification: F25B

Abstract:
A method of increasing the efficiency of a refrigeration system comprised of a primary refrigerant path including a compressor, a condenser, a primary expansion device, and an evaporator connected together to form a closed loop system with a refrigerant circulating therein, the method comprising the steps of:diverting a portion of the refrigerant exiting the condenser into a bypass refrigerant line; passing the diverted refrigerant through a secondary expansion device in the bypass line; passing the refrigerant exiting the secondary expansion device through a heat exchanger thermally coupled to the primary refrigerant path between the compressor outlet and the condenser inlet to remove heat from the discharge vapor from the compressor; passing the refrigerant exiting the heat exchanger and the refrigerant exiting the evaporator through a pressure differential accommodating device means that mixes two vapors at different pressures; and feeding the refrigerant exiting the pressure differential accommodating device to an inlet of the compressor.