Patent ID: 6386966
Filing Date: 2002-05-14
Classification: B60H,Y10S

Abstract:
A blower unit for a vehicle air conditioner, comprising:an inside/outside air switching box having an inside air introduction port through which air inside a passenger compartment is introduced, and an outside air introduction port through which air outside the passenger compartment is introduced; a switching door disposed in said inside/outside air switching box, for selectively opening and closing said inside air introduction port and said outside air introduction port; a fan disposed at a downstream air side of said inside/outside air switching box for blowing air introduced from said inside air introduction port and said outside air introduction port into the passenger compartment; and a rib member provided on an inner surface of said switching door, which irregularly reflects noise generated by said fan during an inside air introduction mode where said switching door opens said inside air introduction port and closes said outside air introduction port; wherein: said rib member includes plural ribs protruding from said inner surface of said switching door toward an inner side of said inside/outside air switching box during said inside air introduction mode; top ends of said ribs are disposed along the main flow of air from said inside air introduction port during said inside air introduction mode; and a connection line connecting said top ends of said ribs is approximately parallel to the main flow of air flowing from said inside air introduction port during said inside air introduction mode.