Patent ID: 6769425
Filing Date: 2004-08-03
Classification: F23L,F23M

Abstract:
A fuel-fired, forced draft heating appliance comprising:a chamber having an exterior wall with an air intake opening therein; a heat exchanger; a fuel burner operative to create hot combustion products in said heat exchanger; a draft inducer fan disposed in said chamber, having a motor, and being operative to expel flue gas from said heat exchanger and to create with said chamber a negative pressure that draws a first quantity of combustion air into said chamber, for delivery to said fuel burner, sequentially through said air intake opening, through the interior of said chamber via a substantially unenclosed flow path therein, and against said motor in a manner cooling said motor prior to delivery of said first quantity of combustion air to said fuel burner; and a deflector structure supported within said chamber in an inwardly spaced apart, facing relationship with said air intake opening, said deflector structure being operative to be impinged by said first quantity of combustion air and redirect it generally toward said motor through said substantially unenclosed flow path within said chamber.