Air-conditioning device for vehicles, and method therefor

Details Air-conditioning device for vehicles, and method therefor Air-conditioning device for vehicles, and method therefor

2006-06-06

2006-06-06

Tanner, Harry B. (Department: 3744)

Refrigeration

Automatic control

Humidity sensor

C062S151000, C062S244000, C236S04400R

Reexamination Certificate

active

07055336

ABSTRACT:
The invention concerns a method using a system (10) for heating or cooling air in a motor vehicle passenger compartment provided with a windscreen, by input into the passenger compartment air which has passed through an exchanger (12) comprised in a refrigerant loop. The invention is characterized in that it comprises steps which consist in measuring the temperature of the air leaving the exchanger (12), measuring the humidity of the air leaving the exchanger (12), determining the dew point of the air leaving the exchanger (12) based on said temperature and humidity, determining the windscreen temperature, comparing the dew point with the windscreen temperature and stopping the heating of air in the passenger compartment when the dew point is higher than the windscreen temperature.

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