Refrigeration cycle device

The refrigeration cycle device has a refrigerant circuit, a liquid receiver (28), a reaction casing (35), a cool radiation evaporator and a cool storage/radiation controller (41). The liquid receiver is disposed in the refrigerant circuit for accumulating liquid refrigerant. The reaction casing is connected to the liquid receiver. The reaction casing selectively serves as a release device for releasing refrigerant gas and as a recovery device for recovering the refrigerant gas. The cool radiation evaporator is disposed in a refrigerant passage between the liquid receiver and the reaction casing when the reaction casing serves as the recovery device. The cool radiation evaporator heats the liquid refrigerant sent from the liquid receiver. The cool storage/radiation controller controls the reaction casing to serve as one of the release device for performing cool storage and the recovery device for performing cool radiation.