防火卷帘门在使用过程中的要点有哪些?

防火卷帘门经常在一些高层建筑中使用，能够在遇到险情时起到良好的防火的作用，能够及时阻拦火灾的蔓延，优势明显。它的使用具有一定的消防作用，在使用时也有一些要点也需要格外注意，接下来就为大家具体介绍一下防火卷帘门在使用过程中的要点。

Fire shutter door is often used in some high-rise buildings, which can play a good role in fire prevention in case of danger, and can stop the spread of fire in time. It has a certain role in the use of fire protection, there are also some points need to pay special attention to when using, next for you to specifically introduce the key points of the fire shutter door in the use process.

(1)门扇对疏散宽度的影响

(1) Influence of door leaf on evacuation width

防火卷帘门一般位于疏散路线上(如楼梯间、前室、走道等)。建筑平面细部设计稍有不慎，可能导致门扇遮挡疏散路线，开启后有效宽度减小，违反疏散基本要求。这种现象在疏散路线和高层居住建筑的转折处尤为突出，应引起重视和避免。

The fire shutter door is generally located on the evacuation route (such as staircase, antechamber, aisle, etc.). A slight carelessness in the detailed design of the building plane may cause the door leaf to block the evacuation route, reduce the effective width after opening, and violate the basic requirements of evacuation. This phenomenon is particularly prominent at the turning point of evacuation routes and high-rise residential buildings, which should be paid attention to and avoided.
                              

(2)通向相邻分区的疏散口

(2) Evacuation exits leading to adjacent zones

在一定条件下，当有防火卷帘门通向相邻防火分区时，高层建筑的每个分区只允许有一个安全出口。需要注意的是，由于防火卷帘门只能向一个方向开启，如果相邻两个分区只有一个安全出口，则应在防火墙上设置两个防火卷帘门，分别向两侧开启，以满足两个分区之间相互疏散的需要。

Under certain conditions, when there is a fire shutter door leading to the adjacent fire compartment, each compartment of a high-rise building is only allowed to have one exit. It should be noted that since the fire shutter door can only be opened in one direction, if there is only one emergency exit in two adjacent zones, two fire shutter doors should be set on the firewall to open to both sides to meet the needs of mutual evacuation between the two zones.

(3)启闭模式的选择

(3) Selection of opening and closing mode

比较常用的是常闭式防火卷帘门，其门扇始终处于关闭状态，人经过时手动开启，通过门扇后自动关闭;如果安装了推栓硬件，会更有利于加快疏散速度。但位于公共通道的常闭式防火卷帘门存在影响通风采光、遮挡视线、不方便通行等缺点。例如，由于管理不善，闭门器和启闭的硬件经常被破坏和失效，造成安全隐患。近年来，常开防火卷帘门恰好解决了上述问题。平时其门扇由门固定器固定在开启位置，遇火自动释放，恢复正常关闭防火卷帘门的功能。

Normally closed fire shutter door is commonly used. Its door leaf is always closed, which can be opened manually when people pass by and closed automatically after passing through the door leaf. If the bolt pushing hardware is installed, it will be more conducive to accelerating the evacuation speed. But the normally closed fire shutter door in the public passage has some disadvantages, such as affecting the ventilation and lighting, blocking the line of sight, inconvenient traffic and so on. For example, due to poor management, the hardware of the door closer and the door opener is often damaged and failed, resulting in security risks. In recent years, often open fire shutter door just solved the above problems. At ordinary times, the door leaf is fixed in the open position by the door holder, which will automatically release in case of fire and restore the function of normally closing the fireproof rolling shutter door.