Patent ID: 9163865
Filing Date: 2015-10-20
Classification: F24F,F25B

Abstract:
1. A refrigeration cycle device comprising: a compressor that compresses a combustible refrigerant; a condenser that condenses the combustible refrigerant compressed by the compressor; a heat exchanger that subcools the combustible refrigerant discharged from the condenser; an expansion valve that expands the combustible refrigerant subcooled by the heat exchanger; an evaporator that evaporates the combustible refrigerant expanded by the expansion valve; an evaporator upstream pressure sensor that detects a pressure of the combustible refrigerant in a pipe between an upstream side of the evaporator and a downstream side of the expansion valve; an evaporator downstream pressure sensor that detects a pressure of the combustible refrigerant in a pipe between a downstream side of the evaporator and an upstream side of the compressor; a bypass pipe that connects an upstream pipe of the compressor and a downstream pipe of the heat exchanger; a bypass expansion valve provided on the bypass pipe to expand a secondary stream that diverges from a primary stream of the combustible refrigerant flowing through the downstream pipe; and a controller configured to: