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    • 13. 发明申请
    • SMOKE DETECTORS PARTICULARLY DUCTED SMOKE DETECTORS
    • 烟雾探测器特别吸引烟雾探测器
    • US20070285264A1
    • 2007-12-13
    • US11843859
    • 2007-08-23
    • Martin Cole
    • Martin Cole
    • G08B17/107
    • G08B17/107G01N21/53G01N2021/4711G01N2021/4733G01N2021/4792G08B17/113
    • The present invention relates to the detection of particles suspended in fluid particularly smoke detectors suitable for mounting on ducting for the early detection of smoke created by unwanted pyrolysis or combustion of materials in a protected area or fire zone to which the duct is connected. The present invention provides alternately illuminating a detection zone with one of either a first or a second illumination. The improvement embodied in the current invention is the ability to retain sensitivity to a wide range of particle sizes and also to discriminate between different kinds of smoke or dust according to particle size, whilst also achieving relatively long service life, small size, light weight and low cost.
    • 本发明涉及悬浮在流体中的颗粒特别是烟雾探测器的检测器,特别是烟雾探测器,其适于安装在管道上,以便早期检测由管道连接到的保护区域或防火区中的材料的不希望的热解或燃烧产生的烟雾。 本发明提供交替地照射具有第一或第二照明中​​的一个的检测区域。 本发明所体现的改进是保持对各种粒度的灵敏度的能力,并且还能够根据粒度来区别不同种类的烟雾或粉尘,同时还实现相对较长的使用寿命,小尺寸,轻质量和 低成本。