Device for reducing the generation of noise in fans

Details Device for reducing the generation of noise in fans Device for reducing the generation of noise in fans

1995-11-01

1996-12-17

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

415 554, F04D 2966

Patent

active

055846530

ABSTRACT:
A device for reducing the generation of noise in a fan (11) having a gas intake channel (13), a gas discharge channel (14) and a gas propulsion device (15), in particular a side channel fan for supplying combustion air in a heater. At least in the regions of the opening cross-section (18, 19) of the gas intake channel (13) and/or the gas discharge channel (14) there is disposed structure for inducing a flow resistance (interference structure 20, 21).

REFERENCES:
patent: 2245094 (1941-06-01), Neibert
patent: 3442077 (1969-05-01), Youhouse
patent: 3989411 (1976-11-01), Middleton
patent: 4306833 (1981-12-01), Sixsmith et al.
patent: 4412781 (1983-11-01), Abe et al.
patent: 5120193 (1992-06-01), Kadle et al.
patent: 5205707 (1993-04-01), Smith et al.

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