| 摘要 |
PROBLEM TO BE SOLVED: To operate a sprinkler in an early stage of a fire when the fire breaks out, to immediately extinguish the fire, and to reduce the damage of the fire by transmitting the heat received by a thermal plate in the fire to a fuse without waste and reducing the time of melting the fuse. SOLUTION: The sprinkler head comprises a sprinkler head body 1, a valve 3 for closing a spout 1c inside the body, and a thermally disassembled part 18 for supporting the lower end of the valve and retaining the closed state of the valve. The ring-shaped fuse 9 constituting the thermally disassembled part is held by a flanged cylindrical holder member 10. The holder member is supported in contact at a spot or in a line with a flange 16 disposed at the lower end of a support pin 12 held at the center of a frame 2 so that the heat conduction becomes smaller, and a gap is formed around the support pin to prevent heat conduction. COPYRIGHT: (C)2006,JPO&NCIPI
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