| 摘要 |
Provided is a fire door to prevent flooding of indoor equipment. A fire door (10) blocks a room (R) in which a tank (T) accommodating water (L) and an equipment set (F1, F2) that should avoid flooding are installed. The fire door (10) comprises a master door (1), a slave door (2), and a power hinge (3). The master door (1) is installed so as to be difficult to open from the room interior toward the room exterior and stops the water (L) flowing from the tank (T). The single-swing slave door (2) is disposed in the master door (1), is connected, so as to freely open and close, to the master door (1) so as to open from the room interior toward the room exterior, and can discharge the water (L) flowing into the room. With the power hinge (3), the force to open and close the slave door (2) is regulated so that the slave door (2) is opened when the water (L) in the room interior is at or greater than a prescribed water level and the slave door (2) is closed when the water (L) in the room interior is less than the prescribed water level. |
