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    • 1. 发明申请
    • Flame Detector
    • 火焰探测器
    • US20100073926A1
    • 2010-03-25
    • US12561185
    • 2009-09-16
    • Akihisa KudohKazuyoshi SakuraiHiroshi KanekoNobuyuki AkiyamaMasahiro Katagiri
    • Akihisa KudohKazuyoshi SakuraiHiroshi KanekoNobuyuki AkiyamaMasahiro Katagiri
    • F21V1/00G01J5/02
    • G08B17/12G08B29/08
    • A flame detector is provided. A circuit board is disposed in a housing. A first light source emits first light. A light guide member comprised of translucent material guides the first light from the first light source to a light emission portion of the light guide member. A first light receiving element detects second light having a predetermined wavelength unique to the flames. A second light source emits third light to a translucent cover which is disposed between an opening of the housing and the first light receiving element. A second light receiving element detects the third light passed through the translucent cover to test the translucency. The first light source, the second light source and the second light receiving element are mounted on the circuit board. The light emission portion is formed into a substantially annular shape which encloses the first light receiving element at a front side of the housing to limit a field of view of the first light receiving element to a predetermined range. And the light guide member has a light entrance portion and a light exit portion for the third light to form a light path from the second light source to the second light receiving element through the translucent cover and the light guide member.
    • 提供火焰探测器。 电路板设置在壳体中。 第一光源发射第一光。 由半透明材料构成的导光构件将来自第一光源的第一光引导到导光构件的发光部分。 第一光接收元件检测具有特定于火焰的预定波长的第二光。 第二光源将第三光发射到设置在壳体的开口和第一光接收元件之间的半透明盖。 第二光接收元件检测通过半透明盖的第三光以测试半透明度。 第一光源,第二光源和第二光接收元件安装在电路板上。 光发射部分形成为大致环形的形状,其将第一光接收元件封装在壳体的前侧,以将第一光接收元件的视野限制在预定范围内。 并且导光部件具有用于第三光的光入射部分和光出射部分,以通过半透明盖和导光部件形成从第二光源到第二光接收元件的光路。
    • 2. 发明授权
    • Flame detector
    • 火焰探测器
    • US08201973B2
    • 2012-06-19
    • US12561185
    • 2009-09-16
    • Akihisa KudohKazuyoshi SakuraiHiroshi KanekoNobuyuki AkiyamaMasahiro Katagiri
    • Akihisa KudohKazuyoshi SakuraiHiroshi KanekoNobuyuki AkiyamaMasahiro Katagiri
    • F21V33/00
    • G08B17/12G08B29/08
    • A flame detector is provided. A circuit board is disposed in a housing. A first light source emits first light. A light guide member comprised of translucent material guides the first light from the first light source to a light emission portion of the light guide member. A first light receiving element detects second light having a predetermined wavelength unique to the flames. A second light source emits third light to a translucent cover which is disposed between an opening of the housing and the first light receiving element. A second light receiving element detects the third light passed through the translucent cover to test the translucency. The first light source, the second light source and the second light receiving element are mounted on the circuit board. The light emission portion is formed into a substantially annular shape which encloses the first light receiving element at a front side of the housing to limit a field of view of the first light receiving element to a predetermined range. And the light guide member has a light entrance portion and a light exit portion for the third light to form a light path from the second light source to the second light receiving element through the translucent cover and the light guide member.
    • 提供火焰探测器。 电路板设置在壳体中。 第一光源发射第一光。 由半透明材料构成的导光构件将来自第一光源的第一光引导到导光构件的发光部分。 第一光接收元件检测具有特定于火焰的预定波长的第二光。 第二光源将第三光发射到设置在壳体的开口和第一光接收元件之间的半透明盖。 第二光接收元件检测通过半透明盖的第三光以测试半透明度。 第一光源,第二光源和第二光接收元件安装在电路板上。 光发射部分形成为大致环形的形状,其将第一光接收元件封装在壳体的前侧,以将第一光接收元件的视野限制在预定范围内。 并且导光部件具有用于第三光的光入射部分和光出射部分,以通过半透明盖和导光部件形成从第二光源到第二光接收元件的光路。
    • 7. 发明授权
    • Flame detector
    • 火焰探测器
    • US07714290B2
    • 2010-05-11
    • US12125814
    • 2008-05-22
    • Akihisa Kudoh
    • Akihisa Kudoh
    • G01J5/02
    • G08B17/12F23N5/082F23N2029/04F23N2029/14G01J5/602
    • A first band pass filter selects and transmits light having an infrared wavelength specific to flame. A first infrared-ray receiving element receives the light from the first band pass filter. A second band pass filter selects and transmits light having an infrared wavelength which is not the infrared wavelength specific to flame. A second infrared-ray receiving element receives the light from the second band pass filter. A first output of the first infrared-ray receiving element is compared with a second output of the second infrared-ray receiving element to detect the flame. When light having homogeneous energy in a transmissive wavelength band of the first band pass filter and a transmissive wavelength band of the second band pass filter is incident on the first band pass filter and the second band pass filter, an amount of the light transmitted through the second band pass filter is less than an amount of the light transmitted through the first band pass filter, and the first output and the second output are adjusted so that a level of the first output is equal to a level of the second output.
    • 第一带通滤波器选择并透射具有特定于火焰的红外波长的光。 第一红外线接收元件接收来自第一带通滤光器的光。 第二带通滤波器选择并透射具有不是火焰特有的红外波长的红外波长的光。 第二红外线接收元件接收来自第二带通滤光器的光。 将第一红外线接收元件的第一输出与第二红外线接收元件的第二输出进行比较以检测火焰。 当在第一带通滤波器的透射波长带中具有均匀能量的光和第二带通滤波器的透射波长带入射到第一带通滤波器和第二带通滤波器上时,透过 第二带通滤波器小于通过第一带通滤波器传输的光量,并且调节第一输出和第二输出,使得第一输出的电平等于第二输出的电平。