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    Airfoil blade and method for its manufacture
    1.
    发明授权
    Airfoil blade and method for its manufacture 有权
    翼型叶片及其制造方法

    公开(公告)号：US06508627B2

    公开(公告)日：2003-01-21

    申请号：US09870367

    申请日：2001-05-30

    申请人： Mark Allen Gerken ,  Michael Joseph Neely ,  Michael Brendel ,  James L. E. Meats

    发明人： Mark Allen Gerken ,  Michael Joseph Neely ,  Michael Brendel ,  James L. E. Meats

    IPC分类号： F04D2930

    CPC分类号： F04D29/282 ,  F04D29/30 ,  Y10T29/49329 ,  Y10T29/49339

    摘要： This centrifugal blower fan wheel has extruded-aluminum airfoil blades. The preferred blades have two hollow regions, separated by an angled mid-load support beam, inside the blade. The nose section of the blade (at the leading edge) and the tail section of the blade (at the trailing edge) have open semi-circular grooves which face the adjacent hollow sections and are designed to accept thread cutting or thread forming screws for attachment of the blade to a ring-shroud and back-plate.

    摘要翻译： 该离心式鼓风机风扇叶片具有挤压铝型翼型叶片。 优选的叶片具有在叶片内部的两个中空区域，其由成角度的中间负载支撑梁分开。 叶片的前部（前缘）和叶片的尾部（在后缘处）具有开口的半圆形槽，其面向相邻的中空部分并被设计成接受用于附接的螺纹切割或螺纹成形螺钉 的叶片到环形护罩和背板。