Highly sensitive smoke detector
    7.
    发明授权
    Highly sensitive smoke detector 失效
    高灵敏度烟雾探测器

    公开(公告)号:US4914425A

    公开(公告)日:1990-04-03

    申请号:US285802

    申请日:1988-12-16

    CPC分类号: G08B17/113

    摘要: An ionization smoke detector of the present invention comprises an outer electrode having a plurality of smoke inlets formed on a side wall thereof, an outer cover and a partition wall having a plurality of smoke inlets disposed between the outer electrode and the outer cover to form a triple wall structure. The smoke inlets formed on the outer cover, the partition wall and the outer electrode are staggered from each other. Air stream hitting against the detector is attenuated by the triple wall structure and generally half of the air flow is allowed to pass between the outer cover and the outer electrode and between the partition wall and the outer electrode, flowing out of the detector and the remaining half of the air flow is led into the detector through the smoke inlets.

    摘要翻译: 本发明的电离烟雾检测器包括:外电极,其侧壁上形成有多个烟雾入口,外盖和分隔壁,其具有设置在外电极和外罩之间的多个烟气入口,以形成 三重墙结构。 形成在外盖,隔壁和外电极上的烟雾入口彼此交错。 撞击检测器的空气流被三壁结构衰减,通常一半的气流在外盖和外电极之间以及间隔壁和外电极之间流过检测器,剩余的 一半的气流通过烟雾进入检测器。

    Moisture-proof ionization smoke detector
    9.
    发明授权
    Moisture-proof ionization smoke detector 失效
    防潮电离烟雾探测器

    公开(公告)号:US4937562A

    公开(公告)日:1990-06-26

    申请号:US283241

    申请日:1988-12-09

    CPC分类号: H01J47/02 G08B17/113

    摘要: An ionization smoke detector of the present invention has an annular engaging flange portion formed integrally on the periphery of an insulating board and an engaging groove formed on a cover, so that a circuitry-accommodating portion may be moisture- and gas-tightly sealed merely by inserting the flange portion into the groove, without using special sealing members such as ruber packing members.In an intermediate electrode mounting structure of the present invention, support legs are formed integrally on the periphery of the intermediate electrode which may be simply inserted into an opening of the insulating board to fix and support the intermediate electrode, without using screws etc. Thus, a space needed to mount the intermediate electrode can be minimized. An electrode lead is connected to a lead of an FET insulatedly potted at an appropriate place on the backside of the insulating board with a hot melt synthetic resin. This can prevent possible penetration of moisture or corrosive gases into the circuitry-accommodating portion by the insulation sealing of the FET, even though the electrode lead passes through an opening of the insulating board. Thus, corrosion of the circuit parts can surely be avoided.

    摘要翻译: 本发明的电离烟雾检测器具有一个环形接合凸缘部,该环形接合凸缘部一体地形成在绝缘板的周边和形成在盖上的接合槽中,使得电路容纳部分可以仅被湿气密封 将凸缘部分插入凹槽中,而不使用特殊的密封构件,例如凹版包装构件。 在本发明的中间电极安装结构中,支撑腿一体地形成在中间电极的周边上,其可以简单地插入到绝缘板的开口中,以固定和支撑中间电极,而不使用螺钉等。因此, 可以最小化安装中间电极所需的空间。 电极引线通过热熔合成树脂连接到绝缘板背面的合适位置绝缘地封闭的FET的引线。 即使电极引线穿过绝缘板的开口,也可以通过FET的绝缘密封来防止湿气或腐蚀性气体渗透到电路容纳部分中。 因此,可以可靠地避免电路部件的腐蚀。