发明名称 |
Fire extinguishing condition monitoring apparatus for automatic fire extinguishing equipment |
摘要 |
Apparatus for monitoring the fire extinguishing condition of automatic fire extinguishing equipment which is adapted to detect flames and spray a fire extinguisher liquid from a nozzle to extinguish a fire. The apparatus comprises a detector for generating a signal corresponding to the light energy radiated by the flames and a fire determination circuit for determining that the fire extinguisher liquid is hitting the flames when the detector signal has a DC component but has no AC component, since the AC component corresponds to flicker of the flame and ceases when the fire is sprayed with the fire extinguisher liquid.
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申请公布号 |
US4706760(A) |
申请公布日期 |
1987.11.17 |
申请号 |
US19850810979 |
申请日期 |
1985.12.19 |
申请人 |
HOCHIKI KABUSHIKI KAISHA |
发明人 |
ARAI, YOSHIO;KITAJIMA, AKIRA;AKIBA, KOUJI |
分类号 |
A62C31/00;A62C37/00;A62C37/36;G08B17/00;G08B17/12;(IPC1-7):A62C37/00 |
主分类号 |
A62C31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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