Patent ID: 9561703
Date: 2017-02-07
CPC Classifications: B60H,B61D

Claim:
1. A vehicle air-conditioning device comprising: a refrigerant circuit including a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger that are connected by refrigerant pipes to form a refrigeration cycle; an indoor air-sending device that supplies air to the indoor heat exchanger; an outdoor air-sending device that supplies air to the outdoor heat exchanger, wherein the refrigerant circuit is installed under the floor of a vehicle and uses carbon dioxide as the refrigerant; a first chamber having a first air inlet through which outside air is introduced, and a first air outlet through which air blown out of the indoor air-sending device flows into the vehicle; a second chamber having a second air inlet through which air outside the vehicle is introduced, and a second air outlet through which air blown out of the outdoor air-sending device flows out of the vehicle; a third chamber having a first opening communicating with an outside of the vehicle, a second opening communicating with the first air inlet for supplying outside air to the first chamber, a third opening communicating with the first air outlet and a fourth opening communicating with the outside of the vehicle for discharging air from the first chamber to the outside of the vehicle, wherein the first chamber, the second chamber and the third chamber are provided separately, and the first chamber, the second chamber and the third chamber are disposed underneath the floor of the vehicle, wherein the first chamber has at least the indoor air-sending device and the indoor heat exchanger disposed therein, and wherein the second chamber has at least the outdoor air-sending device and the outdoor heat exchanger disposed therein; and a carbon dioxide sensor provided in the first chamber and detects the carbon dioxide concentration.