Quiet by-pass vacuum motor

Details Quiet by-pass vacuum motor Quiet by-pass vacuum motor

1985-05-17

1987-06-02

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

415210, F04D 2966

Patent

active

046699520

ABSTRACT:
A quiet by-pass vacuum motor wherein a ring-like cavity is defined between inner and outer walls of the housing for a working air fan. Separating members divide the cavity into passageways which communicate with openings in the housing. A plate having a plurality of vanes thereon is received upon the separating members, the plate extending from the outer wall to a position short of the inner wall. A baffle plate is then received upon the vanes. Working air is exhausted over the baffle plate, between the vanes, over the plate and between the separating members and through the openings. The exhaust path greatly reduces the noise level of the vacuum motor.

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