| 摘要 |
PURPOSE:To prevent an intentional self-damage accident due to gas and a gas explosion accident derived from this accident, by connecting a gas leak detector, in which a gas flow detecting means is arranged, to a gas flow generating means by a gas flow guiding part and arranging plural gas leak detectors in unspecific positions. CONSTITUTION:Plural gas leak detectors 1 are arranged in every room and are connected to an air chamber 3 and a fan 4 by plural air suction tubes 2. When the fan 4 is rotated, air enters into gas leak detectors 1 from an aperture part 9 and is brought into contact with gas detecting parts 5 and is flowed to the outside through an air current detecting part 7, an air suction tube 2, and the air chamber 3 and the fan 4. If the fan 4 is stopped or the aperture part 9 is closed or a break or the like of air suction tubes 2 and the air chamber 3 occurs, the air current is stopped, and this stop is detected by the air current detecting part 7 to raise an alarm from an air current alarm output 8. If gas enters into gas leak detectors 1 from the aperture part 9, it is detected by a gas detecting part 5, and an alarm is raised from a gas alarm output 6. |
