Patent ID: 10814698

Abstract:
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 17, open a solenoid valve 21, let a refrigerant from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant through an outdoor expansion valve 6, let the refrigerant absorb heat in an outdoor heat exchanger 7, and send the refrigerant to an accumulator 12, and a dehumidifying and cooling mode to open the solenoid valve 17, close the solenoid valve 21, decompress the refrigerant through an indoor expansion valve 8, 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 valve 21 is opened for a predetermined period of time.