Patent ID: 6758260
Filing Date: 2004-07-06
Classification: B60H

Abstract:
A heating, ventilating, and air conditioning assembly for heating, venting, and cooling a passenger compartment of a vehicle, said assembly comprising;a housing having an inlet and at least one outlet for directing a flow of air into the passenger compartment, said housing defining first and second quadrants disposed between said inlet and outlet; at least one heat exchanger-disposed within said housing downstream of said inlet and upstream of said outlet; an air mixing door, having first and second sides, mounted to said housing downstream of said inlet and upstream of said outlet with said air mixing door having a first position for directing substantially all of the air through said first quadrant, a second position for directing substantially all of the air through said second quadrant, and a third position for directing a flow of air through both of said first and second quadrants; a first seal mounted to said first side of said air mixing door with said first seal seating against said housing when said air mixing door is in said first position; a second seal mounted to said second side of said air mixing door with said second seal seating against said housing when said air mixing door is in said second position; and a diffuser mounted to at least one of said sides of said air mixing door with said diffuser having a plurality of passageways to interrupt a flow of air passing around said air mixing door when said air mixing door initially moves from one of said first and second positions to said third position, thereby controlling an initial flow of air into at least one of said quadrants.