FAN
    6.
    发明申请
    FAN 审中-公开
    风扇

    公开(公告)号:US20130004347A1

    公开(公告)日:2013-01-03

    申请号:US13495418

    申请日:2012-06-13

    IPC分类号: F04D25/08 F04D25/06

    摘要: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion. The stationary portion includes a stator and a bearing portion. The bearing portion includes a sleeve and a bearing housing. The rotating portion includes a rotor magnet, a shaft, and a thrust plate. A radial gap includes a radial dynamic pressure bearing portion arranged to generate a fluid dynamic pressure acting axially downward on a lubricating oil, while a thrust gap includes a thrust dynamic pressure bearing portion arranged to generate a fluid dynamic pressure acting radially inward on the lubricating oil. A circulation hole extending in an axial direction is defined between the bearing housing and the sleeve. The radial gap is arranged to have a radial width in a range of about 5 μm to about 20 μm.

    摘要翻译: 风扇包括电机和叶轮。 马达包括固定部分和旋转部分。 固定部分包括定子和轴承部分。 轴承部分包括套筒和轴承壳体。 旋转部分包括转子磁体,轴和止推板。 径向间隙包括径向动压轴承部分,其布置成产生轴向向下在润滑油上作用的流体动压力,而推力间隙包括推力动压轴承部分,该推力动压轴承部分布置成产生径向向内作用在润滑油上的流体动压力 。 在轴承壳体和套筒之间限定沿轴向延伸的循环孔。 径向间隙布置成具有在约5μm至约20μm的范围内的径向宽度。