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    • 71. 发明申请
    • Centrifugal fan
    • 离心风机
    • US20050095132A1
    • 2005-05-05
    • US10963621
    • 2004-10-14
    • Yu-Chien KaoTsu-Liang LinKuo-Cheng LinWen-Shi Huang
    • Yu-Chien KaoTsu-Liang LinKuo-Cheng LinWen-Shi Huang
    • F04D29/28F04D29/30F04D29/38
    • F04D29/281F04D29/30
    • A centrifugal fan includes a hub and an impeller. The impeller is composed of a plurality of blades mounted around an outer circumference of the hub. The paraxial side of the blade forms a backward leaning structure, while the non-paraxial side thereof forms a forward leaning structure. A chamfer structure also can be formed at a paraxial side of each blade to enlarge the air inlet of the fan. Each blade further includes a protrusion, which is located at a side opposite to the inlet and extends toward a center of the hub, to increase the airflow rate through the fan motor. The centrifugal fan further includes an anti-decompression cap connected to an inlet side of the impeller to prevent an axial flow of the intake air from decompression.
    • 离心风扇包括轮毂和叶轮。 叶轮由围绕轮毂的外周安装的多个叶片组成。 叶片的近轴侧形成向后倾斜结构,而其非近轴侧形成向前倾斜结构。 也可以在每个叶片的近轴侧形成倒角结构,以扩大风扇的进气口。 每个叶片还包括突出部,该突起位于与入口相对的一侧并朝着轮毂的中心延伸,以增加通过风扇马达的气流速率。 离心风扇还包括连接到叶轮的入口侧的防减压帽,以防止进气被轴向流动而不被减压。