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    • 5. 发明申请
    • High Efficiency Ducted Fan
    • 高效风扇
    • US20100247316A1
    • 2010-09-30
    • US12730521
    • 2010-03-24
    • Richard M. AynsleyRichard A. Oleson
    • Richard M. AynsleyRichard A. Oleson
    • B63H1/16F04D29/34
    • F04D29/34F04D29/20F04D29/263F04D29/329
    • A fan assembly comprises a hub and fan blades. The hub includes a plurality of sockets configured to receive complementary mounting blocks of the fan blades. The mounting blocks each include at least one tapered shoulder portion. The mounting blocks are each tapered along three dimensions. Each mounting block comprises a rear face seated against a complementary rear face of the corresponding socket and a front face that is exposed relative to the hub. A cap secures the fan blades to the hub. The fan assembly may also include one or more shrouds positioned about the fan blades. The one or more shrouds may be substantially straight cylinders, may be flared or bell-shaped, may comprise a cage, may have any other suitable configuration, or may be omitted altogether.
    • 风扇组件包括毂和风扇叶片。 轮毂包括多个插座,其构造成接收风扇叶片的互补安装块。 安装块各自包括至少一个锥形肩部。 安装块各自沿三维锥形。 每个安装块包括抵靠相应插座的互补后表面的后表面和相对于毂露出的前表面。 盖子将风扇叶片固定到轮毂上。 风扇组件还可以包括围绕风扇叶片定位的一个或多个护罩。 一个或多个护罩可以是基本上直的圆柱体,可以是喇叭形的或钟形的,可以包括保持架,可以具有任何其它合适的构造,或者可以完全省略。