Axial-flow fan

An axial-flow fan according to the present disclosure can increase the amount of the airflow and simultaneously reduce the noise level. A plurality of stationary blades are curved, in a convex manner, toward a rotating direction of an impeller. The plurality of stationary blades are generally inclin...

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Bibliographic Details
Main Author ISHIHARA KATSUMICHI,OOSAWA HONAMI,MIYAZAWA MASASHI,IKEDA TOMOAKI
Format Patent
LanguageEnglish
Published 06.06.2007
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:An axial-flow fan according to the present disclosure can increase the amount of the airflow and simultaneously reduce the noise level. A plurality of stationary blades are curved, in a convex manner, toward a rotating direction of an impeller. The plurality of stationary blades are generally inclined so that discharge-side edge portions thereof are located more forward than suction-side edge portions thereof in the rotating direction. An inclination angle theta of each of the plurality of stationary blades in the vicinity of the external end portion is larger than the inclination angle theta in the vicinity of the internal end portion. The inclination angle is gradually changed from the vicinity of the external end portion toward the vicinity of the internal end portion.
Bibliography:Application Number: CN200610163711