FIRE-EXTINGUISHING GAS INJECTOR, GAS FIRE EXTINGUISHER USING THE SAME, CONSTRUCTION METHOD THEREOF, AND CUSTODY/ASSEMBLY METHOD OF FIRE-EXTINGUISHING GAS INJECTOR

摘要

To provide a gas fire extinguisher capable of attenuating a sound caused by a jet flow of fire-extinguishing gas from a jet head, and adjusting accurately characteristics of jetting and sound attenuation.SOLUTION: A jet head body 101 is constituted by providing a nozzle member 339 on the jet head body 101 connected to a conduit tube 14 for guiding fire-extinguishing gas. Sound-damping means 102 includes a second sound-damping material 108 formed by laminating a plurality of discoid plates comprising a porous material. The second sound-damping material 108 is sandwiched and fixed between a fitting part 138 and a pressing part 128 of the jet head body 101 by a fitting member 127. The peripheral surface 124 of the second sound-damping material 108 is opened to the atmosphere.SELECTED DRAWING: Figure 3