Centrifugal fan
    1.
    发明授权
    Centrifugal fan 有权
    离心风机

    公开(公告)号:US08342799B2

    公开(公告)日:2013-01-01

    申请号:US11959314

    申请日:2007-12-18

    IPC分类号: F04D29/40

    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。

    Cooling fan
    2.
    发明申请
    Cooling fan 审中-公开
    冷风扇

    公开(公告)号:US20090104031A1

    公开(公告)日:2009-04-23

    申请号:US11953732

    申请日:2007-12-10

    IPC分类号: F01D1/02

    CPC分类号: F04D29/4213 F04D25/0613

    摘要: A cooling fan includes a frame (100) and an impeller (200) having a plurality of blades (240) disposed in the frame (100). The frame (100) has a cap (120) with an air inlet (122), a base (140) and a sidewall (160) extending from a periphery of the base (140) with an air outlet (180) defined therein. The cap (120) is mounted on the sidewall (160) with a chamber formed between the cap (120), the base (140) and the sidewall (160). A curved tongue portion (190) is formed on the sidewall (160) in vicinity of the air outlet (180). A protrusion (124) is formed on the cap (120) in vicinity of the curved tongue portion (190) and protrudes into the air inlet (122).

    摘要翻译: 冷却风扇包括框架(100)和具有设置在框架(100)中的多个叶片(240)的叶轮(200)。 框架(100)具有带空气入口(122),底座(140)和从基座(140)的周边延伸的侧壁(160)的盖子(120),其中限定有空气出口(180)。 帽(120)安装在侧壁(160)上,其中腔(120),基座(140)和侧壁​​(160)之间形成有腔室。 弯曲的舌部(190)形成在空气出口(180)附近的侧壁(160)上。 在所述盖(120)上在所述弯曲舌部(190)附近形成突起(124)并突出到所述空气入口(122)中。