常闭防火门与常开防火门有何区别？

来源：http://www.jnyuqilin.com/  发布时间：2024-04-11 14:10:20

常闭防火门在平时呈关闭状态，有人员走动时需要推开。常闭防火门这种开启状态存在一定的缺点，由于防火门安装的地方通常是人员经常走动的通道，造成了一定的矛盾。特别是大型内人员流量大，如果在其内部的疏散楼梯间设置常闭式防火门，由于开闭频繁，防火门很快就会损坏脱落，从而起不到防火作用，形成火灾隐患。

Normally closed fire doors are in a closed state and need to be pushed open when personnel are moving. The open state of normally closed fire doors has certain drawbacks, as the installation location of fire doors is usually a passage where people frequently walk, causing certain contradictions. Especially in large shopping malls with high personnel flow, if normally closed fire doors are installed in the evacuation stairwells, due to frequent opening and closing, the fire doors will quickly be damaged and fall off, thus failing to play a fire prevention role and forming a fire hazard.

常开式防火门平时呈开启状态，火灾时自动关闭。由于平时保持开启状态，使人员通行便利，通风采光方便，在火灾情况下能自行关闭，起到隔烟阻火作用，从而彻底了防火门平时关闭而给人员通行带来的不便以及防火门因经常开关而造成的人为损坏，同时又保证了消防。因此在一些大型的疏散楼梯间，应设置常开防火门，平时呈开启状态，发生火灾时通过各种传感器控制闭门器关门。

The normally open fire door is usually in an open state and automatically closes in case of a fire. Due to being kept in an open state, it facilitates personnel access, ventilation and lighting, and can be closed on its own in the event of a fire, playing a smoke and fire blocking role. This completely solves the inconvenience caused by the closure of fire doors for personnel access and the human damage caused by frequent opening and closing of fire doors, while ensuring fire safety. Therefore, in the evacuation stairwells of some large shopping malls, normally open fire doors should be installed, and in the event of a fire, various sensors should be used to control the door closer to close the door.