Refrigeration cycle device

A refrigeration cycle device for an air conditioner, comprising:

• a compressor that compresses and discharges a refrigerant mixed with a refrigerator oil;
• a heating unit that heats a ventilation air by using a heat of the refrigerant discharged from the compressor as a heat source;
• a branch passage that branches a flow of a high-pressure refrigerant flowing out from the heating unit;
• a cooling valve that reduces a pressure of the refrigerant flowing out from one refrigerant outflow port of the branch passage;
• a cooling evaporator that evaporates the refrigerant by heat exchange between the refrigerant reduced in pressure by the cooling valve and the ventilation air;
• a heat absorption valve that reduces a pressure of the refrigerant flowing out from another refrigerant outflow port of the branch passage;
• a heat absorption evaporator that evaporates the refrigerant by heat exchange between the refrigerant reduced in pressure by the heat absorption valve and a heat source fluid;
• and
• circuit switching valves that switch between a refrigerant circuit allowing the refrigerant to flow into the cooling evaporator and a refrigerant circuit preventing the refrigerant from flowing into the cooling evaporator, wherein
• the heat absorption valve adjusts a throttle opening degree to cause a heat-absorption refrigerant on an outlet side of the heat absorption evaporator to be in a gas-liquid two-phase state when the circuit switching valves are switched to the refrigerant circuit that prevents the refrigerant from flowing into the cooling evaporator and a predetermined condition is satisfied.