Fire flat door has a kind of often open fire door, as the name implies often open fire door is usually long-term to maintain the state of open, when there is fire automatically shut down the fireproof door.
There is an electronic control device on this fireproof door controlled by the fire Control Chamber. Its working principle is as:
1, fire door on either side of the Smoke Fire Detector initiative alarm, after the bus report to the fire alarm controller, fire alarm Controller Recovery action instructions to the fire door common linkage module, connected to the release of the dc24v coil circuit, the coil instantly electrified release door, the door with the help of closed-door elastic automatic blockade, The dc24v coil circuit is automatically cut off due to the door detached from the release device, at the same time, the fire door release device to the gate shape signal input linkage module, and then through the alarm bus to the fire control room, for the stairwell, evacuation walkway and front room fire door, should be able to automatically block.Frequent open fire doors, in the event of fire, should have a self-blocking and signal response role.
2, the fire door to be opened to the direction of evacuation of the flat door, and after the blockade should be able to manually open from any side. The seam and hole in the upper part of the fire door are filled with non-extinguished data, and the corresponding refractory limit requirements should be reached, and the door should have a solid refractory function, and the setting is reasonable.About the often open fire doors, civilian construction is usually flat door, single-fan antique a door release device and a single linkage module, double-fan antique Two door release device and two single linkage module.
3, fire control room can also go through the bus direct control of the scene of the linkage module block the fire door, and lost the door block does recognize the response signal, the door reset needs to be on-site manual pull door Reset, reset after the fire door shape information will also be reflected to the fire control room. The above is also Beijing Great Wall Fire Door factory technical staff on the reasons for the work of this fireproof door made a rough introduction, hoping to help more people understand this kind of often open fire door
The above is also Beijing Great Wall Fire Door factory technical staff on the reasons for the work of this fireproof door made a rough introduction, hoping to help more people understand this kind of often open fire door