| 摘要 |
PROBLEM TO BE SOLVED: To provide water fire extinguishing system piping and foam fire extinguishing system piping in one piping system and partially construct foam fire extinguishing equipment in existing sprinkler fire extinguishing equipment. SOLUTION: In the fire extinguishing equipment provided with secondary side piping 2 connected with a sprinkler head 1 for spraying water, extension piping 7 is provided via a check valve 6 in a tip of the secondary side piping, a foam fire extinguishing unit 8 is provided in a base end side of the extension piping, and a closed type spraying head 9 or a closed type foam head for ejecting a foam solution is provided on the extension piping. The foam fire extinguishing unit 8 is composed of a small liquid tank 10 storing foam liquid and a venturi type mixer 11 producing the foam solution by mixing the foam liquid and water. COPYRIGHT: (C)2004,JPO
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