車両用空調装置

Abstract

To cope with cases where an outdoor air temperature is especially low and there is a rapid rise request of an indoor temperature when heating is started and perform efficient heat exchange even when using a refrigerant circuit with refrigerant having a low critical temperature.SOLUTION: A vehicular air conditioner includes: a refrigerant circuit; a heat medium circuit in which a heat medium whose temperature is controlled by the refrigerant circuit circulates; and an air conditioning unit which blows air whose temperature is controlled to a cabin by arranging a plurality of heat exchangers in which the heat medium flows in an air flow passage. The refrigerant circuit has a first refrigerant heat medium heat exchanger and a second refrigerant heat medium heat exchanger, which are provided in order along a circulation direction of the refrigerant and discharge heat of the refrigerant to the heat medium. The heat medium circuit has a flow passage switching section which switches between a flow passage which makes the heat medium passing either one of the first refrigerant heat medium heat exchanger and the second refrigerant heat medium heat exchanger flow into at least one of the plurality of heat exchangers and a flow passage which makes the heat medium passing both of the first refrigerant heat medium heat exchanger and the second refrigerant heat medium heat exchanger flow into the plurality of heat exchangers.SELECTED DRAWING: Figure 1

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