| 摘要 |
PROBLEM TO BE SOLVED: To completely prevent water immersion to the indoor side, to alleviate impact between a closing plate and an air conditioning duct at the closing time, and to enhance water tightness after closing.SOLUTION: A water stop damper 1 of an air conditioning duct includes: a detection tank 10 in which water immersed in an air conditioning duct flows; a closing plate 12 which closes a flow passage by gravity fall by hooking of a fastener 11 being released, interlocked with self-weight of the water flowed in the detection tank 10, and which partitions the water immersion side and the water stop side; and an arm member 13 in which one end is connected to the closing plate 12, and which operates, interlocked with a closing operation of the closing plate 12. In the arm member 13, a shock absorber 21 is connected for alleviating gravity fall of the closing plate 12 at the closing operation time of the closing plate 12, and an energization device 22 is connected for energizing the closing plate 12 to the water stop side after the closing of the flow passage by the closing plate 12. |
