VEHICLE AIR CONDITIONER

摘要

There is disclosed a vehicle air conditioner which can realize a desirable outlet temperature even when a refrigerant subcool degree of a radiator varies. A controller executes a heating mode to let a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant by which heat has been radiated, and then let the refrigerant absorb heat in an outdoor heat exchanger 7, thereby heating in a vehicle interior. The controller controls the compressor 2 on the basis of a radiator target pressure (a target high pressure), and corrects the radiator target pressure (the target high pressure) in such a direction as to heighten when a target subcool degree enlarges, on the basis of the target subcool degree (the refrigerant subcool degree) of the radiator 4.

主权项

1. A vehicle air conditioner comprising:
a compressor which compresses a refrigerant; an air flow passage through which air to be supplied into a vehicle interior flows; a radiator disposed in the air flow passage to let the refrigerant radiate heat; an outdoor heat exchanger disposed outside the vehicle interior to let the refrigerant absorb heat; and control means, the control means being configured to let the refrigerant discharged from the compressor radiate heat in the radiator, decompress the refrigerant by which heat has been radiated and then let the refrigerant absorb heat in the outdoor heat exchanger, thereby heating in the vehicle interior, wherein the control means controls the compressor on the basis of a target high pressure, and corrects the target high pressure on the basis of a refrigerant subcool degree of the radiator.