Air conditioning device for vehicle

摘要

An vehicle air conditioner (1A) includes a duct (3) in which a partition member (4) forming a first flow path (3A) and a second flow path (3B) is provided, and a heat pump circuit (2A). In the heat pump circuit (2A), a first indoor heat exchanger (12A) that contributes mainly to heating is located in the first flow path (3A) or faces an outlet of the first flow path (3A), and a second indoor heat exchanger (12B) that contributes mainly to cooling is located in the second flow path (3B). The ratio between an internal air and an external air within air flowing through each of the first flow path (3A) and the second flow path (3B) is adjustable. The duct (3) is provided with at least one of a heating exhaust port (35) for discharging air cooled in the second indoor heat exchanger (12B) to the outside of the vehicle interior in heating operation, and a cooling exhaust port (36) for discharging air heated in the first indoor heat exchanger (12A) to the outside of the vehicle interior in cooling operation. This configuration enables the air within the vehicle interior, the temperature of which has been adjusted by heating or cooling, to be efficiently utilized without wasting energy by discharging the air as it is to the outside.

主权项

1. A vehicle air conditioner that cools and heats a vehicle interior, the vehicle air conditioner comprising:
a duct having an internal air inlet port and an external air inlet port at one end portion thereof, and a blowing port at another end portion thereof; a partition member provided so that a first flow path and a second flow path are formed in the duct; a first air blower disposed in the first flow path; a second air blower disposed in the second flow path; a first intake damper that adjusts a ratio between an amount of internal air flowing into the first flow path through the internal air inlet port and an amount of external air flowing into the first flow path through the external air inlet port; a second intake damper that adjusts a ratio between an amount of internal air flowing into the second flow path through the internal air inlet port and an amount of external air flowing into the second flow path through the external air inlet port; a heat pump circuit comprising
a first indoor heat exchanger that is disposed in the duct so as to be located in the first flow path or to face an outlet of the first flow path and that contributes to heating,a second indoor heat exchanger that is disposed in the duct so as to be located in the second flow path and that contributes to cooling, andan outdoor heat exchanger disposed outside the vehicle interior; and a controller, wherein the duct is provided with a heating exhaust port for discharging air cooled in the second indoor heat exchanger to an outside of the vehicle interior in heating operation, and in the heating operation,
(i) the controller controls the first intake damper to set the first intake damper at an intermediate position for opening both of the internal air inlet port and the external air inlet port, a mixed air of the internal air having flowed through the internal air inlet port and the external air having flowed through the external air inlet port is supplied into the first flow path, and the mixed air supplied into the first flow path is heated in the first indoor heat exchanger and is blown into the vehicle interior through the blowing port, and(ii) the controller controls the second intake damper to set the second intake damper at an external air blocking position for closing the external air inlet port, and the internal air supplied into the second flow path is cooled in the second indoor heat exchanger and is discharged to the outside of the vehicle interior through the heating exhaust port, wherein a flow rate of the internal air discharged to the outside of the vehicle interior through the heating exhaust port is less than a flow rate of the external air drawn into the first flow path through the external air inlet port.