Refrigerating machine oil is reliably returned to a compressor, regardless of whether the oil is miscible or immiscible with a refrigerant. A first refrigerant channel includes a compressor, a condenser, a first flow control valve, a refrigerant storing container, a second flow control valve, and a first evaporator are connected in that order. A refrigerant outlet of the first evaporator is connected to a suction refrigerant inlet of an ejector. A second refrigerant channel includes a compressor and a second evaporator connected in that order. A refrigerant inlet of the second evaporator is connected to a mixed refrigerant outlet of the ejector. A third refrigerant channel branching off from a halfway point of a pipe connecting a refrigerant outlet of the radiator and the first flow control valve includes a third flow control valve and a motive refrigerant inlet of the ejector are connected in that order.