Sanden Automotive Climate Systems Corporation

Kazuki Sekiguchi

Ryo Miyakoshi

Tetsuya Ishizeki

Kohei Yamashita

A vehicle air conditioner which is capable of inhibiting liquid return to a compressor and generation of noise due to bumping in an accumulator. There are executed a heating mode to close a solenoid valve, open a solenoid valve, let a refrigerant radiate heat in a radiator, decompress the refrigerant through an outdoor expansion valve, let the refrigerant absorb heat in an outdoor heat exchanger, and send the refrigerant to an accumulator, and a dehumidifying and heating mode to open the solenoid valve, close the solenoid valve, decompress the refrigerant through an indoor expansion valve, let the refrigerant absorb heat in a heat absorber, and generate heat in an auxiliary heater. A valve position of the outdoor expansion valveis reduced for a predetermined period of time before shifting from the heating mode to the dehumidifying and heating mode.

Vehicle air conditioner

A vehicle air conditioning device which is capable of inhibiting liquid return to a compressor and generation of noise due to bumping in an accumulator. There are executed a heating mode to close a solenoid valve, open a solenoid valve, let a refrigerant from a compressorradiate heat in a radiator, decompress the refrigerant through an outdoor expansion valve, let the refrigerant absorb heat in an outdoor heat exchanger, and send the refrigerant to an accumulator, and a dehumidifying and cooling mode to open the solenoid valve, close the solenoid valve, decompress the refrigerant through an indoor expansion valve, let the refrigerant absorb heat in a heat absorber, and send the refrigerant to the accumulator. When shifting from the heating mode to the dehumidifying and cooling mode, the solenoid valveis opened for a predetermined period of time.

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Isesaki, Japan

Kazuki Sekiguchi