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公开(公告)号:US20070243064A1
公开(公告)日:2007-10-18
申请号:US11403045
申请日:2006-04-12
申请人: Tsuguji Nakano , Daniel Hinch , Tsukasa Yoshinaka
发明人: Tsuguji Nakano , Daniel Hinch , Tsukasa Yoshinaka
IPC分类号: F04D25/08
CPC分类号: F04D29/384
摘要: Fan blade assemblies are provided for quiet and efficient operation in portable electric axial flow fans intended for home or office use. The blades of the fan blade assemblies include a forward sweep to provide relatively quiet operation. The camber lines of the blades are curved to provide generally concave pressure surfaces and generally convex suction surfaces.
摘要翻译: 风扇叶片组件用于在家用或办公室使用的便携式电动轴流风机中进行安静和高效的操作。 风扇叶片组件的叶片包括向前扫掠以提供相对安静的操作。 叶片的弧形线是弯曲的,以提供通常凹陷的压力表面和大体凸起的吸力表面。