REFRIGERATION CYCLE APPARATUS

摘要

This refrigeration cycle apparatus has: a refrigerant circuit in which a compressor, a condenser, a primary expansion valve, and an evaporator are connected through main piping; an internal heat-exchanger for carrying out heat-exchanging on a refrigerant flowing between the condenser and the primary expansion valve and a refrigerant flowing between the evaporator and the compressor, and introducing the refrigerant flowing out of the evaporator to the intake side of the compressor; an HIC heat-exchanger disposed between the condenser and the internal heat-exchanger and connected in series to the internal heat-exchanger; bypass piping branched between the condenser and the HIC heat-exchanger and guiding the refrigerant to the compressor via the HIC heat-exchanger; and a secondary expansion valve depressurizing the refrigerant introduced into the bypass piping from the condenser to discharge the refrigerant to the HIC heat-exchanger, wherein the HIC heat-exchanger carries out heat-exchange on the refrigerant introduced therein from the condenser through the main piping and the refrigerant introduced therein from the condenser through the secondary expansion valve.