F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
F23L 17/16 (2006.01) F23L 1/00 (2006.01) F23L 5/02 (2006.01) F23M 9/00 (2006.01) F23N 3/00 (2006.01)
Patent
CA 2478554
A fuel-fired, forced draft air heating furnace has a draft inducer fan disposed in a vestibule chamber having an exterior wall with an air intake opening therein. During operation of the draft inducer fan its motor is cooled by combustion air drawn inwardly through the air intake opening. To enhance the combustion air cooling of the draft inducer fan motor, a deflection plate Is supported within the vestibule chamber in an inwardly spaced apart, facing relationship with the air intake opening. A portion of the combustion air flowing inwardly through the air intake opening impinges on and is redirected by the plate toward the motor via a substantially unenclosed flow path within the vestibule chamber.
Blake Cassels & Graydon Llp
Rheem Manufacturing Company
LandOfFree
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