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Inside/outside air switching device having first and second inside air introduction ports

  • US 20020025772A1
  • Filed: 08/20/2001
  • Published: 02/28/2002
  • Est. Priority Date: 08/25/2000
  • Status: Active Grant
First Claim
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1. An inside/outside air switching device for a vehicle having a passenger compartment, comprising:

  • an inside/outside air switching box having first and second inside air introduction ports from which inside air inside the passenger compartment is introduced, and an outside air introduction port from which outside air outside the passenger compartment is introduced;

    an inside/outside air switching door, for selectively opening and closing the first inside air introduction port and the outside air introduction port, the inside/outside air switching door being disposed in the inside/outside air switching box to open the outside air introduction port and close the first inside air introduction port in an outside air introduction mode;

    an inside air auxiliary door, for opening and closing the second inside air introduction port, disposed in the inside/outside air switching box; and

    a blower unit, disposed at a downstream air side of the inside/outside air switching door, for sucking and blowing air introduced from the outside air introduction port and the first and second inside air introduction ports, wherein, the inside air auxiliary door has an upper edge supported in the inside/outside air switching box, and is disposed to be rotatable around the upper edge and to open the second inside air introduction port in the outside air introduction mode by a pressure difference between an inner side of the inside/outside air switching box around the inside air auxiliary door and an inner side of the passenger compartment.

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