Overpressure-based System to protect vertical evacuation routes against smoke infiltration

An overpressure-based system to control and protect evacuation routes against smoke infiltration, where the space being secured and protected is equipped with at least, two pressure-regulating governors, at least two reversible fans, at least two air admitting ducts, at least two pressure sensors, at least two temperature sensors, at least two controllers of pressure-controlling governors, at least two controllers of frequency converters, at least one input card with at least two temperature sensors connected thereto and, also, two pressure sensors, and, at least two frequency converters, wherein the system's controlling & working unit 14 is connected with the upper fan's frequency converter 19 through the upper fan's controller 15, and, next, through the reversible upper fan 4, and this system's unit is also connected with the upper fan's frequency converter 20 through the lower fan's controller 16, and, next, with the reversible lower fan 5. The input card of the upper fan;s controller 17 is connected with the system's controlling & working unit 14 through the upper fan's controller, and the input card of the lower fan's controller 18 is connected with the system's controlling & working unit 14 through the lower fan's controller 16. Moreover, the system's controlling & working unit 14 is connected with the upper and lower pressure regulating governors 2 and 3 through the upper controller 10 and lower controller 11;

• next, the upper and lower pressure sensors 8 and 9, placed in the upper and lower air admitting ducts 6 and 7, are connected with the system's controlling & working unit 11 through the input card of the upper fan's controller 17, and, next, through the upper fan's controller 15, and the internal and external temperature sensors 12 and 13 are connected with the system's controlling and working unit 14 through the input card of the lower fan's controller 18, and, next through the lower fan's controller 16.