REFRIGERATION-CYCLE DEVICE, AIR CONDITIONER, AND METHOD FOR CONTROLLING REFRIGERATION CYCLE DEVICE

摘要

A refrigeration-cycle device in which reliability and versatility are improved is obtained in the present invention. The refrigeration-cycle device is provided with: a refrigerant circulation circuit (10) in which a compressor (11), a condenser (12), a first aperture device (13), an evaporator (14), and an accumulator (15) are connected in an annular configuration; a bypass flow path (20) having a second aperture device (21) connected partway therealong, refrigerant that flows through the portion between the condenser (12) of the refrigeration circulation circuit (10) and the first aperture device (13) being bypassed to the compressor (11); an internal heat exchanger (30) for exchanging heat between the refrigerant flowing through the portion between the condenser (12) of the refrigerant circulation circuit (10) and the first aperture device (13), and the refrigerant that has passed through the second aperture device (21) of the bypass flow path (20); and a control means for varying the amount of liquid refrigerant flowing into the compressor (11) via the bypass flow path (20) in accordance with the amount of refrigerant in the accumulator (15).