| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular air conditioning apparatus configured to obtain the heating capacity needed during heating operation, by preventing decreases in the discharge rate of coolant from a compressor in low outdoor temperature environments, and to dehumidify without decreasing the heating capacity during dehumidifying heating operation.SOLUTION: A vehicular air conditioning apparatus includes: a heat dissipating refrigerant expansion valve 25 that decompresses a refrigerant flow out from a radiator 15 in a heating operation and a first dehumidifying heating operation; a gas-liquid separator 29 which, by inputting the coolant decompressed in the heat dissipating refrigerant expansion valve 25, separates the coolant into a gaseous coolant and a liquid coolant; and a coolant flow path 20k as a bypass circuit allowing at least a portion of the gaseous coolant separated in the gas-liquid separator 29 to enter the portion of the compressor 21 where the coolant undergoing compression circulates. |
