| 摘要 |
PROBLEM TO BE SOLVED: To completely prevent the generation of dead water inside a sprinkler head by completely interrupting the inflow of water into a head main body in a normal state in a closed type sprinkler head for a residence connected to the branching port of a T joint in the middle of a water supply pipe branched from city water. SOLUTION: In normal time, the water introducing port 2 of the head main body 4 is closed by a second valve 35 and the generation of the dead water inside the head main body 4 is prevented. When a fire occurs, the second valve 35 is lowered from the water introducing port 2 and opens the water introducing port 2 accompanying the lowering of a first valve 12 to be lowered to open a water discharge port 3 by the decomposition of a thermosensitive decomposition part 13. COPYRIGHT: (C)2007,JPO&INPIT
|
