| 摘要 |
PROBLEM TO BE SOLVED: To provide sprinkler fire-fighting equipment constituted so that a valve is opened accurately at a prescribed fire temperature to perform discharge and rapidly closed at the time of falling to the prescribed fire temperature or below to stop the discharge. SOLUTION: The sprinkler fire-fighting equipment comprises the on-off valve 10 which receives the supply of pressurized fire-fighting water on its primary side, the closing type sprinkler head 12 connected to the secondary side of the on-off valve 10 and subjected to open operation when the circumferential temperature reaches a first set temperature and a heat-sensitive valve 14 operated when the circumferential temperature reaches a second set temperature lower than the first set temperature to hold the on-off valve 10 to an opening operable state and subjected to restoring operation when the circumferential temperature falls to the second set temperature during the open operation of the on-off valve 10 accompanied by the open operation of the closing type sprinkler head 12 to close the on-off valve 10. COPYRIGHT: (C)2007,JPO&INPIT
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