CENTRIFUGAL FAN

PROBLEM TO BE SOLVED: To provide a centrifugal fan capable of suppressing increase of noise even in being thinned.SOLUTION: In a centrifugal fan including a rotor 15 having a rotor yoke 18, an impeller 8 having blades 10 and connected to an outer periphery of the rotor yoke 18, a motor 21 for rotati...

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Bibliographic Details
Main Authors FUJIMOTO SEIYA, NARA KIYOHISA
Format Patent
LanguageEnglish
Japanese
Published 12.10.2017
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:PROBLEM TO BE SOLVED: To provide a centrifugal fan capable of suppressing increase of noise even in being thinned.SOLUTION: In a centrifugal fan including a rotor 15 having a rotor yoke 18, an impeller 8 having blades 10 and connected to an outer periphery of the rotor yoke 18, a motor 21 for rotating and driving the rotor 15, and a casing 2 having a suction port 35 and a blowout port 36, and accommodating the rotor 15, the impeller 8 and the motor 21, and discharging the air sucked from the suction port 35 toward an outer part of the casing 2 from the blowout port 36 by the impeller 8 rotated with the rotor 15, an inner peripheral portion 10a at a rotor yoke 18 side of the blade 10 is extended toward an inner peripheral side in a state of being overlapped to an outer peripheral face of the rotor yoke 18 in an axial direction of the motor 21, thus a chord length of the blade 10 is increased.SELECTED DRAWING: Figure 5 【課題】薄型化しても騒音の増大を抑えることができる遠心ファンを提供する。【解決手段】ロータヨーク１８を有するロータ１５と、羽根１０を有しロータヨーク１８の外周に結合されたインペラ８と、ロータ１５を回転駆動するモータ２１と、吸い込み口３５および吹き出し口３６を有し、ロータ１５、インペラ８およびモータ２１を収納するケーシング２とを具備し、ロータ１５とともに回転するインペラ８により、吸い込み口３５から吸入した空気を吹き出し口３６からケーシング２の外方に向けて排出する遠心ファンにおいて、羽根１０におけるロータヨーク１８側の内周部１０ａを、ロータヨーク１８の外周面に対しモータ２１の軸方向に重なる状態に内周側に向けて延在させ、羽根１０の翼弦長を大きくする。【選択図】図５
Bibliography:Application Number: JP20160075737