REFRIGERANT CIRCULATION DEVICE

Provided are an evaporator unit for vehicle-interior air conditioning 2 for cooling an interior of a vehicle, an evaporator unit for on-vehicle battery cooling 3 including an evaporator for on-vehicle battery cooling 32 for cooling an on-vehicle battery mounted on the vehicle; an electric compressor 5 for compressing and supplying a refrigerant to the evaporator unit for vehicle-interior air conditioning 2 and the evaporator unit for on-vehicle battery cooling 3; a temperature sensor 41 for detecting an inner temperature of the electric compressor 5; a pressure sensor 42 for detecting a pressure of the refrigerant compressed by the electric compressor 5; and an air-conditioning control unit 40 for restricting operation of the evaporator for on-vehicle battery cooling 32 so as to reduce load on the electric compressor 5 based on the inner temperature of the electric compressor 5 and the pressure of the refrigerant.