Axial fan and noise abatement apparatus combination
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United States of America Patent
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Oct 9, 1984
Issued Date -
N/A
app pub date -
Jan 10, 1983
filing date -
Sep 22, 1980
priority date (Note) -
Expired
status (Latency Note)
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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.
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