VEHICLE AIR CONDITIONER

摘要

In vehicle air-conditioning devices (100) to (105) including a refrigerant circuit having a compressor (1), an outdoor heat exchanger (2), an expansion device (3), and an indoor heat exchanger (4) that are connected by refrigerant pipes to form a refrigeration cycle; an indoor air-sending device (5) that supplies air to the indoor heat exchanger (4); and an outdoor air-sending device (8) that supplies air to the outdoor heat exchanger (2), the refrigerant circuit is installed under the floor of a vehicle (200) and uses carbon dioxide as the refrigerant.