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    • 7. 发明授权
    • High efficiency one-piece centrifugal blower
    • 高效一体式离心风机
    • US06755615B2
    • 2004-06-29
    • US10005031
    • 2001-12-04
    • Thomas Chapman
    • Thomas Chapman
    • F04D2930
    • F04D29/4233F04D29/023F04D29/281F04D29/282F05D2230/53
    • The arrangement features a centrifugal impeller that exhibits relatively high operating efficiency and high pressure capability, and can be easily constructed as a single piece. The arrangement is useful where relatively high operating efficiency and low cost construction are required, and it is particularly suited for manufacture by injection molding plastic. The impeller is characterized by: a) a hub that extends to a radius less than that of the impeller inlet, allowing one piece construction by an injection molding tool with no slides or action; b) blades that extend from a radius less than the hub radius at the base of the blades, allowing the base of the blades to connect to the hub; c) an impeller top shroud that has curvature in a plane that contains the impeller axis; and d) a cylindrical area ratio between 1.0 and 2.0. The blower assembly is characterized by a separate base plate positioned in close proximity to the base of the impeller blades. The base plate can be incorporated into a motor flange or a blower or motor housing.
    • 该装置具有离心式叶轮,其具有相对较高的操作效率和高压力能力,并且可以容易地构造为单件。 该装置在需要相对高的操作效率和低成本结构的情况下是有用的,并且特别适用于通过注塑成型制造。 叶轮的特征在于:a)轮毂延伸到比叶轮入口的半径小的半径,允许通过注射成型工具进行一次构造而没有滑动或动作; b)叶片从叶片底部的半径小于轮毂半径延伸,允许叶片的基部连接到轮毂; c)在包含叶轮轴线的平面中具有曲率的叶轮顶部护罩; 和d)1.0和2.0之间的圆柱形面积比。 鼓风机组件的特征在于分离的底板位于叶片叶片的底部附近。 基板可以结合到马达法兰或鼓风机或马达外壳中。