Fume-resisting system

Abstract

The invention relates to a fume-resisting system comprising a blower, a wind pressure control valve II, a wind pressure control device and a wind pressure control valve I. The wind pressure control valve II is arranged on the blower; the wind pressure control device comprises a wind pressure control box, a pressure adjustor, a motor and a fan device; the pressure adjustor and the motor are arranged in the wind pressure control box; and the output end of the pressure adjustor is connected with the input end of the motor which is connected with the fan device. The fume-resisting system can reach the technical requirements on smoke resistance in fire control, keep the front chamber pressure, prevent fume from spreading into a front chamber and well protect the life security of human beings.

Description

Technical field: [0001] The invention relates to a smoke prevention system for keeping the front room smoke-free and preventing the smoke from invading the front room when a fire breaks out in a building. Background technique: [0002] At present, the smoke prevention in buildings can adopt the mechanical pressurized air supply method. This mechanical pressurized air supply method requires that the residual pressure value of the mechanical pressurized air supply and smoke prevention system in the smoke prevention stairwell should be 40-50Pa. The shared front chamber should be 25-30Pa. When the door is opened, the wind speed passing through the door should not be less than 0.7m / s. Stable, unable to realize the function of automatically adjusting the wind pressure; when a fire occurs, the smoke will often be discharged into the front room, causing great harm to human life; the pressure in the front room is sometimes very high, and the people in the room , especially the elder...

AI Technical Summary

Problems solved by technology

[0002] At present, the smoke prevention in buildings can adopt the mechanical pressurized air supply method. This mechanical pressurized air supply method requires that the residual pressure value of the mechanical pressurized air supply and smoke prevention system in the smoke prevention stairwell should be 40-50Pa. The shared front chamber should be 25-30Pa. When the door is opened, the wind speed passing through the door should not be less than 0.7m / s. Stable, unable to realize the function of automatically adjusting the wind pressure; when a fire occurs, the smoke will often be discharged into the front room, causing great harm to human life; the pressure in the front room is sometimes very high, and the people in the room , especially the elderly, the weak, the sick and the disabled cannot push open the door in time to escape

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