Patent ID: 6978629
Filing Date: 2005-12-27
Classification: B60H

Abstract:
1. An air conditioner for a vehicle having a compartment, the air conditioner comprising: an air conditioning duct through which air flows into the compartment; a cooling heat exchanger, disposed in the air conditioning duct, for cooling and dehumidifying air in the air conditioning duct in accordance with operation of a compressor; a temperature detection unit which detects a temperature of air cooled in the cooling heat exchanger; a humidity detection unit which detects a humidity of air passing a ventilation passage through which air inside the compartment is ventilated in accordance with an air flow amount in the air conditioning duct; and a controller which controls the compressor so that the temperature detected by the temperature detection unit approaches a target cooling temperature, wherein: when the air flow amount in the air conditioning duct is equal to or larger than a predetermined amount, the controller calculates the target cooling temperature of air to be cooled by the cooling heat exchanger, for defogging a windshield of the vehicle, based on the humidity detected by the humidity detection unit; and when the air flow amount in the air conditioning duct is lower than the predetermined amount, the controller calculates the target cooling temperature for defogging the windshield based on a set humidity higher than the humidity detected by the humidity detection unit.