| 摘要 |
<p>In order to provide a vehicle heat system that can reliably cool or heat a vehicle interior and constantly maintain the temperature of a heat-releasing body mounted in the vehicle in a broad range of environments from a low external air temperature to a high external air temperature, the present invention is characterized by: being provided with a heat pump system within which a refrigerant flows, that connects, in the given order, a compressor, a first refrigerant switching means that switches the flow direction of the refrigerant, an exterior heat exchanger, a first flow rate control means, a second flow rate control means, and a heat pump intermediate heat exchanger, and that is provided between the first flow rate control means and the second flow rate control means with a bypass circuit equipped with a third flow rate control means, a heat pump interior heat exchanger, and a second refrigerant switching means that switches the exit side of the compressor and the entrance side of the compressor; being provided with a thermal medium circuit within which a thermal medium flows and that connects, in the given order, a liquid pump, a cooling heat exchanger that cools the heat-releasing body mounted in the vehicle, a thermal medium interior heat exchanger and a thermal medium intermediate heat exchanger; and the heat pump intermediate heat exchanger and the thermal medium intermediate heat exchanger being provided in a manner so as to be able to exchange heat.</p> |
