Why is the setting up of shopping malls in the fire shutter doors

Fire shutter doors are a modern high-rise building in an essential fire safety facilities, fire doors with the exception of the role of an ordinary door, with fire, smoke, inhibit the spread of fire to protect the evacuation of the special features, are widely used in high-rise buildings, shopping malls, etc. occasions intensive.
Fire doors located in the following positions in general.
(1) closed evacuation staircase leading to hallway; closed elevator, pass forward room and hallway before the room leading to the door.
(2) cable wells, pipelines wells, Exhaust System, garbage Road vertical pipe to check the door wells.
(3) division of fire control district for the construction area by firewalls and fire doors on the wall. When building a firewall or fire door set in times of difficulty, to use in lieu of fire doors, while the protection of the water screen.
(4) norms (such as GB50045-95 "Code for Fire Protection Design of Tall Buildings") or the design of special requirements of fire prevention, smoke splitting the partition door. For example: in the tall buildings with a fixed fire extinguishing installations inside the equipment room (Room cylinder, foam stations, etc.), ventilation, air-conditioning room partition doors, etc. Class A fire doors should be used; often remain more or combustible the basement wall on the room doors, fire doors should be Class A; due to the conditions must be arranged in the fuel within high-rise buildings, gas boilers, the fuel can be oil-immersed power transformers, there is sufficient fuel and other high-voltage capacitors and switches, a dedicated partition on the door of the room, Class A fire doors should be adopted. There are special requirements for the design of the required household fire safety doors, such as monitoring the fire command center, file library, and other valuables of the household warehouse door, usually Class A or B choice of fire doors. High-level senior residential household floor door, security door used by the fire.

Mainly used in large supermarkets (hypermarkets), large shopping malls, large-scale professional materials market, large-scale exhibition hall, plant, storage requirements, such as fire in public places. When the fire broke out, fire shutter doors in the central control system fire control, in accordance with the procedures pre-set auto-down (down), so as to achieve to prevent the spread of flames to other areas of the role of fire fighting for the implementation of valuable time.
Under normal circumstances, large-scale building fire in accordance with national law to configure a central fire control system. When the fire broke out when installed in the roof of the Smoke sensor (referred to as Smoke) received the first smoke signals to the central control system at the same time report to the police, fire central control system connected to the fire by identifying the region after the fire shutter doors power to fire region according to a certain fire shutter speed downlink. When the shutter down to about 1.5 meters from the ground position, and stop down in order to facilitate the evacuation and the evacuation of personnel. Fire shutter doors stay in the middle after a certain period of time, and then continue down until the closure. Fire shutter doors down the middle of the speed and duration can be adjusted during installation.
In some cases, the building is not equipped with a central fire control system, fire shutter door only means of fire shutter fire doors electrical control box to achieve fire shutter fire doors provided for running the program. In this case, when the fire broke out, the smoke of the fire sensor to receive signals directly transmitted to fire shutter fire doors electrical control box.
In the case of power failure, only through the pull chains to fire shutter doors down. Fire shutter door manual with only a one-way down and can not upgrade.
Fire shutter doors higher production, which would require the entire system can withstand a certain period of time of about 1100 ° high temperature tests, fire shutter door is fire-resistant doors fire shutter key indicators. GB14102-93 steel fire shutter door general technical conditions for the fire resistance time of the fire rating of four.