CENTRIFUGAL FAN
    22.
    发明申请
    CENTRIFUGAL FAN 审中-公开

    公开(公告)号:US20180187699A1

    公开(公告)日:2018-07-05

    申请号:US15851287

    申请日:2017-12-21

    Abstract: A centrifugal fan is disclosed. The centrifugal fan includes a housing; and a fan wheel, disposed in the housing, the fan wheel including: a fan hub; a plurality of inner fan blades, each of the inner fan blades includes a first contact surface and a second contact surface, the first contact surfaces are connected to the fan hub respectively; a plurality of connection structures, each of the connections structure includes a first side and a second side; and a plurality of outer fan blades, each of the outer fan blades includes a first end and a second end; wherein the second contact surfaces are connected to the first sides respectively, the first ends are connected to the second sides respectively.

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