| 摘要 |
<p>The present invention makes a powder fire extinguishing agent and a liquid fire extinguishing agent sequentially sprayed to extinguish oil or electric fire and ordinary wooden fire when fire occurs in a building and reduces secondary damage due to the powder fire extinguishing agent. A fire extinguishing device comprises; a first tank (10) where the powder fire extinguishing agent is pressured and stored; a second tank (20) where the liquid fire extinguishing agent is pressured and stored; a first main valve (11) which opens the first tank (10) according to a fire detection signal; a second main valve (21) which opens the second tank (20) after all the powder fire extinguishing agent is discharged from the first tank (10); and a solenoid valve (30) which selectively connects the powder fire extinguishing agent and the liquid fire extinguishing agent to an injection nozzle (40).</p> |
