| 摘要 |
PROBLEM TO BE SOLVED: To provide fire-fighting system installed at a low cost without obstructing traffic, capable of preventing the spread of fire to a staircase when a fire breaks out in a building in the fire-fighting system to be installed in the staircase in a small-scale building. SOLUTION: This fire-fighting system comprises a water supply pipe 7 provided on a wall face 6 inside the helical staircase 1, and extending in the vertical direction, and a side wall type head 5 branched from the water supply pipe 7 and sprinkling extinguishing water inside the staircase. A mist spray means spraying the extinguishing water mist inside the staircase when the fire breaks out other than the staircase 1. COPYRIGHT: (C)2007,JPO&INPIT
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