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    Flame monitoring methods and apparatus
    1.
    发明授权
    Flame monitoring methods and apparatus 有权
    火焰监测方法和装置

    公开(公告)号：US06247918B1

    公开(公告)日：2001-06-19

    申请号：US09438781

    申请日：1999-11-12

    申请人： Stewart Forbes ,  Brian Powell

    发明人： Stewart Forbes ,  Brian Powell

    IPC分类号： F23N500

    CPC分类号： F23N5/082 ,  F23N2029/16

    摘要： In an apparatus for monitoring a hydrocarbon flame, a plurality of radiation sensors detect electromagnetic radiation emitted by the flame. Each of the sensors is provided with a narrow band filter so that the corresponding sensor is responsive only to a narrow range of wavelengths. In this manner, one of the sensors is made responsive to emissions due to transient species in the flame and one of the sensors is made responsive to emissions from a non-transient species in the combustion region. The signals from the radiation sensors are converted to digital and applied to a central processing unit where they are compared to produce an output indicative of the combustion conditions in the flame. An output unit responds to the output signal from the central processing unit to adjust the air fuel ratio in the flame to a desired level, such as just above stoichiometric.

    摘要翻译： 在用于监测碳氢化合物火焰的装置中，多个辐射传感器检测由火焰发射的电磁辐射。 每个传感器设置有窄带滤波器，使得相应的传感器仅响应于窄的波长范围。 以这种方式，对传感器中的一个进行响应于由于火焰中的瞬态物质引起的排放，并且响应于来自燃烧区域中的非瞬态物质的排放使传感器中的一个响应。 来自辐射传感器的信号被转换为数字并被应用于中央处理单元，在那里它们被比较以产生指示火焰中燃烧条件的输出。 输出单元响应于来自中央处理单元的输出信号，以将火焰中的空燃比调节到所需的水平，例如高于化学计量。