常閉防火門與常開防火門有何區別？

來源：//domachine.com.cn/  發布時間：2023-04-11 14:10:20

常閉防火門在平時呈關閉狀態，有人員走動時需要推開。常閉防火門這種開啟狀態存在一定的缺點，由于防火門安裝的地方通常是人員經常走動的通道，造成了一定的矛盾。特別是大型內人員流量大，如果在其內部的疏散樓梯間設置常閉式防火門，由于開閉頻繁，防火門很快就會損壞脫落，從而起不到防火作用，形成火災隱患。

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.

常開式防火門平時呈開啟狀態，火災時自動關閉。由于平時保持開啟狀態，使人員通行便利，通風采光方便，在火災情況下能自行關閉，起到隔煙阻火作用，從而徹底了防火門平時關閉而給人員通行帶來的不便以及防火門因經常開關而造成的人為損壞，同時又保證了消防。因此在一些大型的疏散樓梯間，應設置常開防火門，平時呈開啟狀態，發生火災時通過各種傳感器控制閉門器關門。

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.