Air conditioner

An air conditioner comprising:

• a heat pump cycle including a compressor that compresses and discharges a refrigerant, a condenser that condenses a high-pressure refrigerant compressed by the compressor by heat exchange, a decompression unit that decompresses the refrigerant flowing out of the condenser, and an evaporator that exchanges heat between a low-pressure refrigerant decompressed by the decompression unit and a low-temperature side heat medium to evaporate the refrigerant;
• a heating unit including a heating heat exchanger that heats blown air to be blown into an air conditioning target space using heat of the high-pressure refrigerant as a heat source, an outside air radiator that dissipates heat from a high-temperature side heat medium to outside air, and a heat dissipation amount adjustment unit that adjusts a heat dissipation amount of the heat of the high-temperature side heat medium dissipated to the outside air by the outside air radiator;
• a low-temperature side heat medium circuit configured such that the low-temperature side heat medium from which heat is absorbed by heat exchange in the evaporator circulates, and including a heat generation device arranged to be coolable by heat exchange with the low-temperature side heat medium;
• and
• a microcomputer that controls operation of the heat dissipation amount adjustment unit, wherein
• the microcomputer adjusts a heat dissipation amount in the outside air radiator by the heat dissipation amount adjustment unit such that a blown air temperature of the blown air heated by the heating heat exchanger approaches a predetermined target temperature,
• the condenser condenses the high-pressure refrigerant by exchanging heat between the high-temperature side heat medium and the high-pressure refrigerant,
• the heating unit has a high-temperature side heat medium circuit including:
• the heating heat exchanger through which the high-temperature side heat medium heated by heat exchange in the condenser circulates and heats the blown air by dissipating the heat of the high-temperature side heat medium to the blown air;
• the outside air radiator connected in parallel with the heating heat exchanger to dissipate the heat of the high-temperature side heat medium to the outside air;
• and
• the heat dissipation amount adjustment unit that adjusts a heat dissipation amount in the heating heat exchanger and the heat dissipation amount in the outside air radiator,
• the high-temperature side heat medium circuit includes a heating device that is capable of heating the high-temperature side heat medium,
• the heat dissipation amount adjustment unit is located between the heating device and the heating heat exchanger in a flowing direction of the high-temperature side heat medium, and
• the microcomputer adjusts an amount of heat generated by the heating device such that the blown air temperature approaches the predetermined target temperature.