REFRIGERATION CYCLE DEVICE

摘要

A compressor (12), a four-way valve (13), an outdoor heat exchanger (14), an expansion valve (15), and an indoor heat exchanger (16) are connected in a refrigerant circuit (11a) in which a refrigerant containing an ethylene-based fluorohydrocarbon circulates. For example, 1,1,2-trifluoroethylene (HFO-1123) is used as the ethylene-based fluorohydrocarbon. The refrigerant solubility of the refrigerant oil in the compressor (12) is 20% or less. The circulation rate of the refrigerant oil in the refrigerant circuit (11a) is less than 1%.