Patent ID: 9457214
Filing Date: 2016-10-04
CPC Classification: A62C

Claim Text:
1. A gas fire-extinguishing apparatus, comprising: an ejection head having a nozzle section which ejects high-pressure fire-extinguishing gas to a space; a conduit pipe which is connected to the ejection head and guides high-pressure fire-extinguishing gas to the ejection head; a fire-extinguishing gas supply source which supplies the high-pressure fire-extinguishing gas to the conduit pipe; and a silencer which is detachably mounted on an exterior peripheral surface of the ejection head and attenuates sound caused by ejection of the fire-extinguishing gas from the nozzle section, wherein the silencer comprises a cylindrical peripheral wall, an end wall formed at one end in an axial direction of the peripheral wall to be perpendicular to an axis of the peripheral wall, and a mounting section integrally formed on the cylindrical peripheral wall of the silencer, and a sound absorption material fills substantially an entire inner space defined by the peripheral wall, the end wall and the mounting section, the silencer and the ejection head being threadably engaged with each other through threading on the mounting section of the silencer and threading on the exterior peripheral surface of the ejection head, and wherein the silencer comprises a plurality of vent holes which penetrate the end wall in a thickness direction thereof and the mounting section is detachably formed on the ejection head, and the mounting section has threads formed on an inner and an outer peripheral surface thereof.