Patent ID: 6077158
Filing Date: 2000-06-20
Classification: B60H,B60L,Y02T

Abstract:
An air-flow management system for controlling a flow of air into a passenger compartment of a motor vehicle, the air-flow management system comprising:an air-flow structure defining therein an air passageway to the passenger compartment;a blower for forcing air through the air passageway towards the passenger compartment;a reversible heat pump system in communication with the air-flow structure for transferring heat energy between an outside environment and the passenger compartment, said heat pump system having multiple operating modes including a cooling mode and a heating mode;a recirculation door movable to control a mixture of recirculated air and fresh air that flows through the air-flow structure, said recirculation door having a plurality of positions ranging from a full fresh position to a full recirculation position; anda controller for selecting the operating mode of the heat pump wherein selecting the heating mode after operating in the cooling mode results in moisture evaporating into the air flow directed into the passenger compartment, said controller additionally operable to select the position of the recirculation door such that the mixture of recirculated air to fresh air is selected so that the air pressure within the passenger is increased causing air within the passenger compartment to be purged to the outside environment, thereby reducing the possibility of fogging of the motor vehicle.