| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular air conditioner in which improvement of heating capacity can be achieved by controlling adequately the refrigerant overcooling degree of a radiator so that both of a high pressure and a refrigerant flow rate are satisfied during heating.SOLUTION: A vehicular air conditioner comprises a compressor 2 which compresses refrigerant, a radiator 4 which makes the refrigerant radiate heat, an outside heat exchanger 7 which is installed outside and makes the refrigerant radiate heat or absorb heat, and a controller. By the controller, the refrigerant discharged from the compressor 2 is made to radiate heat at the radiator 4, the refrigerant after heat radiation is decompressed, and, thereafter, a heating mode in which the refrigerant is made to absorb heat at the outside heat exchanger 7 is implemented. The controller 32 includes a high-pressure-preferred mode in which the target radiator overcooling degree TGSC of the radiator 4 is raised in the direction of making the high pressure to a specified high value and a rotation-number-preferred mode in which the target radiator overcooling degree of the radiator is lowered in the direction of making the rotation number of the compressor 2 to a specified high value. |
