Axial fan and noise abatement apparatus combination

Details Axial fan and noise abatement apparatus combination Axial fan and noise abatement apparatus combination

1983-01-10

1984-10-09

Marcus, Stephen

Rotary kinetic fluid motors or pumps

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

415181, F04D 2966

Patent

active

044758677

ABSTRACT:
An axial fan having a central fan structure from which a plurality of blades extend radially and a center body extending axially from said central fan structure. The center body occupies a volume in which turbulence would otherwise occur. At least one side branch resonator is disposed within the center body to attenuate resonance produced by said fan in a particular frequency band.

REFERENCES:
patent: 2040452 (1936-05-01), Troller
patent: 2988302 (1961-06-01), Smith
patent: 3203180 (1965-08-01), Price
patent: 3481427 (1969-12-01), Dobbs et al.
patent: 3542152 (1970-11-01), Adamson et al.
patent: 3949830 (1976-04-01), Muehlbauer

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