Air conditioning device for vehicles

摘要

The object of the present invention is to supply air to passengers in an automobile so that they will feel more comfortable in the presence of solar radiation by suppressing a rise in temperature in a vehicle passenger compartment caused by solar radiation. There is provided a cold air damper which feeds cold air immediately after an evaporator to a face blow port and mixes it with the conditioned air that has passed through an air mixing damper, with the amount of blown air is changed by a blower fan. A control means detects the amount of solar radiation present by using a solar radiation sensor. This invention calculates the temperature of air blown out in the absence of solar radiation, calculates the temperature of air blown out in the presence of solar radiation, calculates a corrected blowing rate according to a thermal equilibrium equation in the presence of solar radiation, and calculates a blowing rate in the presence of solar radiation.