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公开(公告)号:US20090142179A1
公开(公告)日:2009-06-04
申请号:US11959314
申请日:2007-12-18
申请人: CHING-BAI HWANG , ZHI-HUI ZHAO , WEN-JIE ZHANG
发明人: CHING-BAI HWANG , ZHI-HUI ZHAO , WEN-JIE ZHANG
IPC分类号: F01D3/02
CPC分类号: F04D17/105 , F04D17/162 , F04D25/0613
摘要: A centrifugal fan includes a fan frame (20), and a stator (30) and a rotor (40) received in the fan frame. The fan frame includes a bottom base (22), an opposite top cover (21) and a side wall (23) interconnecting the bottom base and the top cover. A first air inlet (24a) is defined in the top cover and a second air inlet (24b) is defined in the bottom base. The rotor includes a hub (41) and a plurality of blades (42) extending from an outer periphery of the hub. An air flow channel (48) is formed between an outer periphery of the blades and the side wall of the fan frame. A cylindrical wall (26, 26a) is formed around one of the first air inlet and the second air inlet to guide airflow from the first and second air inlets into the air flow channel and block the airflow in the air flow channel from flowing back towards the first and second air inlets.
摘要翻译: 离心风扇包括风扇框架(20)和收纳在风扇框架中的定子(30)和转子(40)。 风扇框架包括底部底座(22),相对的顶盖(21)和将底部底部与顶盖相互连接的侧壁(23)。 第一空气入口(24a)限定在顶盖中,并且第二空气入口(24b)限定在底部底部中。 转子包括轮毂(41)和从毂的外周延伸的多个叶片(42)。 在叶片的外周和风扇框架的侧壁之间形成有气流通道(48)。 围绕第一空气入口和第二空气入口中的一个形成圆柱形壁(26,26a),以将来自第一和第二空气入口的气流引导到空气流动通道中并阻挡空气流动通道中的空气流向 第一和第二个进气口。