REFRIGERATING/AIR-CONDITIONING DEVICE

摘要

An object of the present invention is to obtain a refrigerating and air-conditioning apparatus that can suppress liquid backflow to a compressor with a simple configuration, and can reduce annual power consumption. An outdoor unit 61 and an indoor unit 62 are connected to each other by a gas-side connecting pipe 7 and a liquid-side connecting pipe 8 to form a refrigerant circuit 20 in which a compressor 1, a four-way valve 8, an indoor heat exchanger 6, a refrigerant heat exchanger 4, an expansion valve 3, an outdoor heat exchanger 2, and an accumulator 9 are sequentially connected. The refrigerant heat exchanger 4 transfers heat between a high-pressure-side refrigerant flowing between the expansion valve 3 and an outdoor-unit liquid pipe connecting portion 11 and a low-pressure-side refrigerant on an outlet side of the accumulator 9.