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    • 5. 发明授权
    • Smoke detector housing for improved smoke collection
    • 烟雾探测器外壳,用于改善烟雾收集
    • US5751218A
    • 1998-05-12
    • US684947
    • 1996-07-19
    • Charles WinterbleWayne NelsonLawrence G. Stanley
    • Charles WinterbleWayne NelsonLawrence G. Stanley
    • G08B17/107G08B23/00
    • G08B17/107G08B17/113
    • A smoke detection unit has a detection chamber for sampling smoke from a surrounding environment. The detection chamber allows air circulation but is optically opaque. This configuration is typical of photoelectric smoke detectors, for example. A housing defines a window though which air from the environment circulates into and out of the detection chamber. The window's height is approximately the same as the chamber. A cage vane is positioned in the window and is configured as an inverted frustoconical member. An inner edge of the cage vane is spaced away from the chamber. The angled vane, along the other aspects of the unit's configuration, improves sensitivity by increasing smoke circulation through the chamber. This configuration guides the air currents typically created by fires at the ceiling so that the smoke flows easily into the detection chamber.
    • 烟雾检测单元具有用于从周围环境抽取烟雾的检测室。 检测室允许空气循环,但光学不透明。 这种配置是典型的光电式烟雾探测器。 壳体限定窗口,尽管来自环境的空气循环进入和离开检测室。 窗户的高度与房间大致相同。 笼形叶片定位在窗户中并且被配置为倒立的截头圆锥体构件。 笼式叶片的内边缘与腔室间隔开。 沿着设备结构的其他方面,成角度的叶片通过增加通过室的烟气循环来提高灵敏度。 该配置引导通常由天花板上的火灾产生的气流,使得烟雾容易流入检测室。