| 摘要 |
PROBLEM TO BE SOLVED: To increase the fire extinguishing capability, reduce damages of flood by reducing the spray amount, and reduce the cost by making the capacity of a pump or the like smaller in a sprinkler nozzle for fire fighting. SOLUTION: When a fire extinguishing liquid or fire extinguishing water is sprinkled from this sprinkler nozzle 1 for fire fighting at the time of a fire, a sprinkling pattern wherein a sprinkling is intensively performed to a specified section in a specified protective range from a slit 10 of the nozzle section 8 is formed. Then, a driving section 6 is driven by the water current at the time of the sprinkling, and the speed is reduced by a speed reducing section 7. Then, the nozzle section 8 is rotated, and the sprinkling pattern is scanned, and the sprinkling is performed to the total area of the protective range. For the nozzle section 8, a sheet 32 is fitted to the upper flange, and water is prevented from leaking out to the lower side from the peripheral space of the nozzle section 8 when a heat-sensitive operating mechanism 4 operates by a thermal cracking, and comes into contact with a sheet crimp interrupted section 33.
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