VEHICLE AIR CONDITIONING DEVICE, ELECTRIC COMPRESSOR, AND VEHICLE AIR CONDITIONING METHOD

摘要

A refrigerant heating performance is increased while suppressing an increase in weight or cost. A vehicle air-conditioning device (10) is provided with a heat pump cycle (16) for heating operation in which an electric compressor (50) for compressing refrigerant, a vehicle-cabin-interior condenser (26), a throttle (52), and a vehicle-cabin-exterior heat exchanger (54) are connected in that order via refrigerant piping. An inverter for the electric compressor (50) in which a power element comprising a highly heat-resistant semiconductor device is used is disposed on the electric compressor (50) so that the refrigerant compressed by the electric compressor (50) can be heated by the power element. During heating operation of the heat pump cycle (16), the refrigerant is heated by the power element.

主权项

1. A vehicle air conditioning device comprising:
a heat pump cycle for heating in which an electric compressor that compresses a refrigerant, a vehicle-cabin-interior condenser, a throttle, and a vehicle-cabin-exterior heat exchanger are connected in the stated order via refrigerant piping; and an inverter for the electric compressor using a power element constituted by a semiconductor device having high thermal resistance; the inverter being disposed on the electric compressor so that the refrigerant compressed by the electric compressor is able to be heated by the power element, and the power element heating the refrigerant upon heating operation of the heat pump cycle.