IMPELLER AND CENTRIFUGAL FAN

• Main Authors: HAMANO SHINSUKE, DOGE ATSUSHI, FUKUI TOSHIFUMI, YAMAGUCHI ATSUSHI, IGAWA TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 16.02.2017
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

PROBLEM TO BE SOLVED: To provide an impeller improved in blowing efficiency.SOLUTION: An impeller has a cup portion 20 opening downward around a center axis; an annular main plate 30 extending to the outer side in a diametrical direction from a lower side of the cup portion; a plurality of blades 40 arranged on an upper side of the main plate in a circumferential direction; an annular ring portion 50 connected to outer ends of the plurality of blades; and a curved surface portion 60 which connects an upper surface of the main plate and an outer peripheral surface of the cup portion, and projects out to the inner side in the diametrical direction. Diametrical direction inner ends of the plurality of blades are connected to the curved surface portion, and the outside of the main plate has a main plate inclining portion 31 which increases an axial distance between the lower end of the ring portion and the upper surface of the main plate toward the outer side in the diametrical direction.SELECTED DRAWING: Figure 1 【課題】送風効率が向上するインペラを提供する。【解決手段】中心軸を中心とし下側に開口するカップ部２０と、カップ部の下側から径方向外側に向かって延びる環状の主板３０と、主板の上側に周方向に配列された複数の羽根４０と、複数の羽根の外端と接続される円環状のリング部５０と、主板の上面とカップ部の外周面とを接続し、径方向内側に向かって凸となる曲面部６０と、を有する。複数の羽根の径方向内端は、曲面部と接続され、主板の外側は、径方向外側に向かうに従って、リング部の下端と主板の上面との軸方向距離が長くなる主板傾斜部３１を有する。【選択図】図１