Cross flow fan impeller

To reduce its rotational noise in a particular frequency band, the cross flow fan impeller (4) comprises a plurality of division plates (3) perpendicular to the rotational axis and a plurality of blades (1) provided between each pair of division plates (3). The angular location ( k) of the blades is...

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Bibliographic Details
Main Authors MAKOTO YOSHIHASHI, KATSUHISA OOTSUTA
Format Patent
LanguageEnglish
Published 17.07.1997
Edition6
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:To reduce its rotational noise in a particular frequency band, the cross flow fan impeller (4) comprises a plurality of division plates (3) perpendicular to the rotational axis and a plurality of blades (1) provided between each pair of division plates (3). The angular location ( k) of the blades is varied cyclically based on a specific equation.
Bibliography:Application Number: AU19960070557