Patent ID: 6468034
Filing Date: 2002-10-22
Classification: F04D

Abstract:
A blower assembly for use in expelling exhaust gases from a furnace through a circular exhaust pipe comprising:a blower motor having a motor shaft; a blower housing formed from stamped metal and having an internal impeller cavity defined by an outer wall, an inlet opening, a circular exhaust outlet and a transition section, wherein the internal impeller cavity is in fluid communication with the circular exhaust outlet through the transition section, the transition section being formed as an integral part of the blower housing, the blower housing further comprising: a first housing member formed from stamped metal defining a bottom half of both the transition section and the exhaust outlet of the blower housing; and a second housing member formed from stamped metal and attachable to the first housing member to define the transition section and the circular exhaust outlet, wherein the second housing member includes a top half of both the transition section and the exhaust outlet, wherein the motor shaft of the blower motor extends through a shaft opening formed in the second housing member; a mounting flange for attaching the blower housing to the furnace, the mounting flange extending from the outer wall and being generally coplanar with the inlet opening; and an impeller mounted to the motor shaft and contained within the impeller cavity, wherein rotation of the impeller within the impeller cavity creates a flow of exhaust gases out of the circular exhaust outlet.