A power outage is the cut-off power supply, which is usually used. But the fire-fighting equipment is connected with fire-fighting electricity. In case of fire, it is impossible to cut off the power supply of fire fighting equipment. If it is broken, it will be blamed. Fans include smoke exhaust fans and positive pressure fans. Smoke exhaust fan exhausts indoor smoke. Smoke exhaust fire damper is installed at the entrance of smoke exhaust flue, which will automatically close when the temperature in the pipeline reaches 280. The positive pressure fan sends the external breeze to the elevator front room (elevator front room fan), and the fire passage (fire passage fan) plays the role of forming positive pressure between the front room and the fire passage, preventing smoke from entering the front room and the fire passage, and ensuring that people in the fire passage and the front room can breathe normally. When designing the fan, the pressure in the fire escape is greater than that in the front room.
Fire fighting fan:
It refers to an industrial fan that can run continuously at 300℃ for more than 60 minutes and is not damaged at 100℃ for 20 hours/time.