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    Blower Impeller with Partial Tip Blockage
    1.
    发明申请
    Blower Impeller with Partial Tip Blockage 有权
    鼓风机具有部分尖端堵塞

    公开(公告)号：US20090257876A1

    公开(公告)日：2009-10-15

    申请号：US12103575

    申请日：2008-04-15

    申请人： Yousef Jarrah ,  Hanson Situ ,  Thang Nguyen

    发明人： Yousef Jarrah ,  Hanson Situ ,  Thang Nguyen

    IPC分类号： F01D5/22

    CPC分类号： F04D29/188

    摘要： According to embodiments of the invention, an impeller includes a hub, and a plurality of radial blades for drawing the air inflow axially through the hub and delivering the drawn air radially towards the outside. A ring is attached to one or more tips of the plurality of radial blades to block a portion of the tip toward the inlet side of the impeller. The preferred blockage factor, which is the ratio of a height of the ring to a height of the tip, is approximately in a range between 30% and 40%. By blocking a portion of the tip toward the inlet side of the impeller, the low-momentum flow zone toward the inlet side of impeller is blocked, while the high-momentum flow zone toward the back side of impeller is enhanced. As such, the performance of the impeller is enhanced.

    摘要翻译： 根据本发明的实施例，叶轮包括轮毂和多个径向叶片，用于沿空气流动轴向地引导空气流入并将抽吸的空气径向地向外部输送。 环附接到多个径向叶片中的一个或多个尖端，以阻挡尖端的一部分朝向叶轮的入口侧。 优选的阻塞因子是环的高度与尖端的高度的比率，大约在30％至40％的范围内。 通过将叶片的一部分阻挡到叶轮的入口侧，阻止了向叶轮入口侧的低动量流动区域，同时朝向叶轮后侧的高动量流动区域增强。 因此，提高了叶轮的性能。

    Blower impeller with partial tip blockage
    3.
    发明授权
    Blower impeller with partial tip blockage 有权
    鼓风机叶轮部分堵塞

    公开(公告)号：US08128369B2

    公开(公告)日：2012-03-06

    申请号：US12103575

    申请日：2008-04-15

    申请人： Yousef Jarrah ,  Hanson Situ ,  Thang Nguyen

    发明人： Yousef Jarrah ,  Hanson Situ ,  Thang Nguyen

    IPC分类号： F01D5/22

    CPC分类号： F04D29/188

    摘要： According to embodiments of the invention, an impeller includes a hub, and a plurality of radial blades for drawing the air inflow axially through the hub and delivering the drawn air radially towards the outside. A ring is attached to one or more tips of the plurality of radial blades to block a portion of the tip toward the inlet side of the impeller. The preferred blockage factor, which is the ratio of a height of the ring to a height of the tip, is approximately in a range between 30% and 40%. By blocking a portion of the tip toward the inlet side of the impeller, the low-momentum flow zone toward the inlet side of impeller is blocked, while the high-momentum flow zone toward the back side of impeller is enhanced. As such, the performance of the impeller is enhanced.

    摘要翻译： 根据本发明的实施例，叶轮包括轮毂和多个径向叶片，用于沿空气流动轴向地引导空气流入并将抽吸的空气径向地向外部输送。 环附接到多个径向叶片中的一个或多个尖端，以阻挡尖端的一部分朝向叶轮的入口侧。 优选的阻塞因子是环的高度与尖端的高度的比率，大约在30％至40％的范围内。 通过将叶片的一部分阻挡到叶轮的入口侧，阻止了向叶轮的入口侧的低动量流动区域，同时朝向叶轮后侧的高动量流动区域增强。 因此，提高了叶轮的性能。