| 摘要 |
PURPOSE: A fire door structure installed at a front door of building is provided to prevent the heating of a fire door by supplying water into the door. CONSTITUTION: A fire door structure installed at a front door of building comprises a door frame(10), a fire door(20), an injection pipe(30), a control box, and a water tank(50). The door frame has a plurality of nozzle holes(12). The nozzle hole is formed in the indoor of a frame body(11) at a regular interval. The injection pipe has a pipe body(31) and a plurality of nozzle. The pipe is installed along the internal space of the door frame. The control box opens and closes a valve of the water pipe according to the signal of a fire warning detecting device. The water tank has an exhaust hole and nozzle. |
