F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
F04D 29/00 (2006.01) F04D 29/62 (2006.01) F04D 29/66 (2006.01)
Patent
CA 2155386
A centrifugal air blower has a housing with an inlet side wall through which a circular air inlet is formed. A cylindrical electric drive motor coaxially extends through the inlet opening and is drivingly coupled to a centrifugal impeller rotatably disposed within the housing. The motor is supported on the inlet side wall by a mounting system including a plurality of metal mounting rods each having an inner end, an outer end, and an elongated intermediate portion. The inner rod ends are welded to circumferentially spaced locations of a belly band structure coaxially clamped to the drive motor, and the outer rod ends are connected to resilient support assemblies arranged in a circumferentially spaced array on the outer side of the housing inlet side wall around the blower inlet opening. To provide the mounting system with a high degree of stiffness with respect to mounting system loads directed transversely to the motor drive axis, while at the same time providing the mounting system with a high degree of torsional flexibility, each of the intermediate rod portions is positioned to longitudinally extend adjacent and generally parallel to a line extending from the outer end portion of the rod to the center of gravity of the combined mass of the drive motor and impeller.
Jakobs Diane M.
Knight John T.
Lyons Jeffrey L.
Blake Cassels & Graydon Llp
Rheem Manufacturing Company
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