Blower housing construction

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet

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417360, F04D 2942

Patent

active

048849464

ABSTRACT:
A blower compries a unit blower housing of molded plastic material having a circular outer wall and laterally spaced front and rear walls, defining an impeller chamber and a trangential outlet upon a first axis adapted to receive a flexible hose. The outlet defines with an end portion of the outer wall a reverse curved cut off edge extending between the side walls. An opening in the front wall is arranged upon a second axis at right angles to the first axis and receives an air inlet cone secured to the housing by a plurality of threaded inserts molded into the housing. An electric motor upon a support has a drive shaft extending through the rear wall. The rear wall is mounted upon and secured to the motor and an impeller is positioned within the housing and axially mounted upon the motor shaft and has an air intake receiving the air inlet cone. The second axis is so arranged relative to the first axis that the impeller defines with the cut off edge an optimum gap of reduced dimension for a smooth non-turbulent, substantially noiseless airflow through the outlet.

REFERENCES:
patent: 2928961 (1960-03-01), Morrill
patent: 3335654 (1967-08-01), Killam
patent: 3365122 (1968-01-01), Hajec et al.
patent: 3407993 (1968-10-01), Bostrom
patent: 3698833 (1972-10-01), Cann et al.

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