JET HEAD HAVING SILENCING FUNCTION FOR LIQUEFIED GAS-BASED FIRE EXTINGUISHING SYSTEM

摘要

To suppress noise when liquefied fire extinguishing gas is vaporized and expanded without reducing a flow speed too much when liquefied fire extinguishing gas is discharged from a jet head in a gas-based fire extinguishing system using liquefied gas.SOLUTION: A jet head 1 of a gas-based fire extinguishing system in which a fire extinguisher is compressed and liquefied, and stored constantly includes an orifice part 112 for controlling a flow rate of fire extinguishing gas, a muffling member 13 made of a porous material or a fibrous material, which is provided on the downstream side of the orifice part for suppressing noise accompanying discharge of liquefied gas, and an outer shell 15 for protecting the muffling member 13. A liquefied fire extinguishing gas dispersion layer 12 for dispersing the fire extinguishing gas in a liquefied state is provided on the downstream side of the orifice part 112 and on the upstream side of the muffling member 13.SELECTED DRAWING: Figure 1