Serial fan assembly and air-guiding structure thereof
    31.
    发明申请
    Serial fan assembly and air-guiding structure thereof 审中-公开
    串联风扇组件及其导风结构

    公开(公告)号:US20070224039A1

    公开(公告)日:2007-09-27

    申请号:US11716556

    申请日:2007-03-12

    IPC分类号: F04D29/44

    CPC分类号: F04D19/007 F04D29/544

    摘要: A serial fan assembly includes a first fan, a second fan and at least one air-guiding structure. The first and second fans are arranged in serial, and the air-guiding structure is disposed therebetween, for guiding an airflow to follow a direction parallel to an axial direction of the serial fan assembly when the airflow exits from the first fan and enters the second fan, thereby increasing air volume and air pressure of the serial fan assembly and reducing noise during operation. Also, power loss is compensated, and flexibility of assembly and fabrication are improved.

    摘要翻译: 串联风扇组件包括第一风扇,第二风扇和至少一个空气引导结构。 第一和第二风扇被串联布置,并且空气引导结构设置在它们之间,用于当气流从第一风扇排出并且进入第二风扇时引导气流沿着与串联风扇组件的轴向平行的方向 风扇,从而增加串联风扇组件的风量和空气压力,降低运行中的噪音。 此外,功率损耗得到补偿,并且组装和制造的灵活性得到改善。

    Circuit for controlling operation of an emergency exit lamp
    32.
    发明授权
    Circuit for controlling operation of an emergency exit lamp 失效
    用于控制紧急出口灯操作的电路

    公开(公告)号:US6049178A

    公开(公告)日:2000-04-11

    申请号:US234176

    申请日:1999-01-19

    CPC分类号: H02J9/065 H05B41/2853

    摘要: In a circuit for controlling operation of an emergency exit lamp, a delay circuit enables a trigger circuit a preset time period after a power outage has occurred. Once enabled, the trigger circuit activates a relay so as to connect a storage battery to an oscillator. The oscillator is thus enabled to generate a high voltage alternating current signal to activate the lamp to generate a light output in the event of a power outage.

    摘要翻译: 在用于控制紧急出口灯的操作的电路中,延迟电路在发生停电之后使得触发电路能够预设一段时间。 启用后,触发电路激活继电器,将蓄电池连接到振荡器。 因此,振荡器能够产生高电压交流信号,以在停电的情况下激活灯以产生光输出。