| 摘要 |
PROBLEM TO BE SOLVED: To sense surely heat after fire breakout, even when a heat sensitive member of a sprinkler head has a cover.SOLUTION: Flame and burning product materials such as high temperature smoke passes ventilation parts 91, 92 and reach a heat sensitive member 4 in fire breakout, then the heat sensitive member 4 is deformed or broken. Then a pressed seal part 30 is opened, thereby a fire fighting liquid is discharged from an injection hole 22 and passes the ventilation parts 91, 92, and fire fighting is started. In addition, pressure is applied to a cover 90 by discharge of the fire fighting liquid, and an upper edge part 93 of the cover 90 is released from a fitting groove 86 of the holder 80, so that the cover 90 is detached from the holder 80, and the fire fighting liquid can be sprayed into a wider range.SELECTED DRAWING: Figure 9 |
