A vehicle air conditioner includes a duct in which a partition member forming a first flow path and a second flow path is provided, and a heat pump circuit. In the heat pump circuit, a first indoor heat exchanger that contributes to heating is located in the first flow path or faces an outlet of the
A vehicle air conditioner includes a duct in which a partition member forming a first flow path and a second flow path is provided, and a heat pump circuit. In the heat pump circuit, a first indoor heat exchanger that contributes to heating is located in the first flow path or faces an outlet of the first flow path, and a second indoor heat exchanger that contributes to cooling is located in the second flow path. The duct is provided with at least one heating exhaust port for discharging air cooled in the second indoor heat exchanger to the outside of the vehicle interior in heating operation, and a cooling exhaust port for discharging air heated in the first indoor heat exchanger to the outside of the vehicle interior in cooling operation.
대표청구항▼
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, wherein an internal space of the duct i
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, wherein an internal space of the duct is separated from the vehicle interior; anda heat pump circuit comprising a first indoor heat exchanger that is disposed in the duct,a second indoor heat exchanger that is disposed in the duct, andan outdoor heat exchanger disposed outside the vehicle interior,wherein the duct is provided with at least one of a heating exhaust port for discharging air cooled in the second indoor heat exchanger to the outside of the vehicle interior in heating operation, and a cooling exhaust port for discharging air heated in the first indoor heat exchanger to the outside of the vehicle interior in cooling operation, anda flow rate of the air discharged to the outside of the vehicle interior through the heating exhaust port or the cooling exhaust port is less than a flow rate of the external air drawn into the duct through the external air inlet port. 2. The vehicle air conditioner according to claim 1, wherein the duct is provided with both the heating exhaust port and the cooling exhaust port. 3. The vehicle air conditioner according to claim 1, wherein the heating exhaust port is present, the vehicle air conditioner further comprising a heating discharge damper that opens and closes the heating exhaust port, wherein the heating discharge damper directs air having passed through the second indoor heat exchanger to the heating exhaust port when the heating discharge damper has opened the heating exhaust port. 4. The vehicle air conditioner according to claim 1, wherein the cooling exhaust port is present, the vehicle air conditioner further comprising a cooling discharge damper that opens and closes the cooling exhaust port, wherein the cooling discharge damper directs air having passed through the first indoor heat exchanger to the cooling exhaust port when the cooling discharge damper has opened the cooling exhaust port. 5. The vehicle air conditioner according to claim 1, wherein the second indoor heat exchanger is located on a windward side in the duct with respect to the first indoor heat exchanger. 6. The vehicle air conditioner according to claim 1, wherein the outdoor heat exchanger functions as an evaporator in the heating operation and functions as a condenser in the cooling operation. 7. The vehicle air conditioner according to claim 6, wherein the heat pump circuit further comprises: a compressor that compresses a refrigerant; a first expansion valve that expands the refrigerant in the heating operation; and a second expansion valve that expands the refrigerant in the cooling operation, andthe compressor, the first indoor heat exchanger, the first expansion valve, the outdoor heat exchanger, the second expansion valve, and the second indoor heat exchanger are connected in this order in a loop by flow paths. 8. The vehicle air conditioner according to claim 6, wherein the heat pump circuit further comprises a compressor that compresses a refrigerant, and an expansion mechanism that expands the refrigerant, andthe vehicle air conditioner further comprises a switching means that switches a flow direction of the refrigerant in the heat pump circuit to a first direction in the cooling operation and that switches the flow direction to a second direction in the heating operation,the first direction being a direction in which the refrigerant discharged from the compressor passes through the outdoor heat exchanger, the expansion mechanism, the first indoor heat exchanger, and the second indoor heat exchanger in this order to return to the compressor,the second direction being a direction in which the refrigerant discharged from the compressor passes through the first indoor heat exchanger, the expansion mechanism, the outdoor heat exchanger, and the second indoor heat exchanger in this order to return to the compressor. 9. The vehicle air conditioner according to claim 1, wherein a part of the external air drawn into the duct through the external air inlet port is discharged to the outside of the vehicle interior through the heating exhaust port or the cooling exhaust port without passing through the vehicle interior. 10. The vehicle air conditioner according to claim 1, wherein the internal space of the duct that is separated from the vehicle interior is in a section from the external air inlet port to the heating exhaust port or the cooling exhaust port. 11. The vehicle air conditioner according to claim 3, wherein the duct comprises a flow path extending from the external air inlet port to the blowing port, andthe heating exhaust port faces the flow path between the external air inlet port and the blowing port. 12. The vehicle air conditioner according to claim 4, wherein the duct comprises a flow path extending from the external air inlet port to the blowing port, andthe cooling exhaust port faces the flow path between the external air inlet port and the blowing port. 13. The vehicle air conditioner according to claim 1, further comprising: an intake damper that adjusts a ratio between an amount of internal air flowing into the duct through the internal air inlet port and an amount of the external air flowing into the duct through the external air inlet port; anda controller, whereinthe controller controls the intake damper to set the 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 duct, and the mixed air supplied into the duct is heated in the first indoor heat exchanger and is blown into the vehicle interior through the blowing port. 14. A method of controlling 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, wherein an internal space of the duct is separated from the vehicle interior; anda heat pump circuit comprising a first indoor heat exchanger that is disposed in the duct, a second indoor heat exchanger that is disposed in the duct, and an outdoor heat exchanger disposed outside the vehicle interior,wherein the duct is provided with at least one of a heating exhaust port for discharging air cooled in the second indoor heat exchanger to the outside of the vehicle interior in heating operation, and a cooling exhaust port for discharging air heated in the first indoor heat exchanger to the outside of the vehicle interior in cooling operation,the method comprising adjusting a flow rate of the air discharged to the outside of the vehicle interior through the heating exhaust port or the cooling exhaust port and a flow rate of the external air drawn into the duct through the external air inlet port so that the flow rate of the air discharged to the outside of the vehicle interior through the heating exhaust port or the cooling exhaust port is lower than the flow rate of the external air drawn into the duct through the external air inlet port.
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이 특허에 인용된 특허 (8)
Takechi Tetsuya,JPX ; Takahashi Koji,JPX ; Inazawa Hideaki,JPX ; Sato Yasuhiro,JPX ; Tsunooka Tatsuo,JPX ; Nomura Toshiaki,JPX, Air conditioning apparatus for vehicle.
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