天气预报 > 其他 > 排烟口是常开还是常闭
排烟口是常开还是常闭
更新时间: 2020-09-12 00:00:00  

消防正压风机和排烟机平时为常闭状态,发生火灾时候打开。加压送风机平时打开送风,发生火灾是切换为高速状态给疏散楼梯送风保持正压。

排烟口是采用自动或手动开启方式,在建筑物墙面或顶棚上,平时关闭,需要使用时能自动或用手开启,排除火灾产生的热气和烟的开口。其主要作用有:降低火灾现场的热气温度,阻止火势蔓延;避免火灾现场中受害人因烟多缺氧而导致死亡。

板式排烟口一般应用在走道或防烟前室,无窗房间的排烟系统的排烟口处,可以吊装在天花板上或安装在侧墙;多叶排烟口一般安装于楼梯前室、排烟竖井的墙上,亦可安装在排烟系统管道侧面或风道末端。

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