| 摘要 |
PROBLEM TO BE SOLVED: To provide a smoke extraction system which can easily adjust duct resistance by stories in a multistory building and suitably adjust a smoke extraction volume by stories, and the multistory building having the smoke extraction system. SOLUTION: The smoke extraction system B includes: a smoke extractor 1; an vertical duct 2 provided while being connected to the smoke extractor 1 and extended in a vertical direction H; a horizontally-laid duct 3 which is provided such that one end of the duct is connected to the vertical duct 2 and is arranged while being laid in each story; a smoke extraction vent 4 arranged at the horizontally-laid duct 3 and disposed on the predetermined position of each story; and a duct resistance adjusting damper 5 provided to a duct path including the vertical duct 2 and the horizontally-laid duct 3 to adjust duct resistance and to equalize smoke extraction volume on each story. COPYRIGHT: (C)2011,JPO&INPIT |
