| CPC F24F 11/89 (2018.01) [B60H 1/00921 (2013.01); F24F 11/46 (2018.01); F24F 11/67 (2018.01); F25B 5/02 (2013.01); F25B 29/00 (2013.01); F25B 41/20 (2021.01); F24F 2140/20 (2018.01); F25B 2400/0409 (2013.01); F25B 2400/0411 (2013.01)] | 11 Claims |
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1. 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.
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