FAN AND AIR-CONDITIONING APPARATUS USING THE SAME

A fan according to the present invention includes: a main plate fixed to a rotation axis of a driving device; a shroud including an air inlet; and an impeller including n blades between the main plate and the shroud, tip ends of leading edges of the respective blades arranged along a circle around t...

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Bibliographic Details
Main Authors ISOMURA Kazuki, KURIHARA Makoto, TAKAGI Masahiko
Format Patent
LanguageEnglish
Published 17.08.2017
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:A fan according to the present invention includes: a main plate fixed to a rotation axis of a driving device; a shroud including an air inlet; and an impeller including n blades between the main plate and the shroud, tip ends of leading edges of the respective blades arranged along a circle around the rotation axis, wherein all of the attachment pitch angles a are different angles, and the blades are arranged so that, in the attachment pitch angles α, attachment pitch angles on both sides of an attachment pitch angle αm are a combination of other than an attachment pitch angle αm−1, which is the next smallest angle in order of magnitude of angle to the attachment pitch angle αm, and an attachment pitch angle αm+1, which is the next largest angle in order of magnitude of angle, to the attachment pitch angle αm.
Bibliography:Application Number: US201515519188