Vehicle air conditioning device

Abstract

The present invention provides a vehicle air-conditioning device which gives consideration to both defrosting of an outdoor heat exchanger and heating of the interior of a vehicle cabin, and which sufficiently performs defrosting and heating at the same time without reducing the air-conditioning efficiency. Provided is an air conditioner for a vehicle, comprising: a refrigerant circuit; a heat medium circuit having a plurality of flow paths through which the heat medium heated or cooled by the refrigerant circuit circulates; and a flow path switching unit that switches the connection state of the plurality of flow paths. And a control unit that controls the refrigerant circuit and the heat medium circuit, and controls the flow path switching unit to control the flow of the heat medium to the flow path, in which the heat medium circulating in the high-temperature heat medium flow path is mixed with the heat medium passing through at least one of the plurality of heat storage units at a predetermined ratio, and the heat medium circulating in the high-temperature heat medium flow path is mixed with the heat medium passing through at least one of the plurality of heat storage units at a predetermined ratio. The mixed heat medium flows to an external heat exchanger.

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