Patent DE-102010013805-A1 (DE)
Title: Device for controlling and regulating an inert gas fire extinguishing system for rooms in buildings such as computer rooms or largely closed containers such as industrial storage systems with lifting or rotating conveyor systems
Inventor: FUCHS PETER
IPC: A62C37/44
Filed: 2010-04-03
Abstract: The device for controlling and regulating an inert gas fire extinguishing system for rooms in buildings or largely closed containers such as industrial storage systems with lifting or rotating conveyor systems, is claimed, where oxygen sensors or probes of the sensors are used at specific suitable position and the sensors or probes of the sensors in active connection with a pneumatically or electrically controlled shutoff valve in the inert gas cylinder/cylinder to determine the required (adjustable) quality (set point) of the inert gas in a target area (1) (depending on quantity). The device for controlling and regulating an inert gas fire extinguishing system for rooms in buildings or largely closed containers such as industrial storage systems with lifting or rotating conveyor systems, is claimed, where oxygen sensors or probes of the sensors are used at specific suitable position and the sensors or probes of the sensors in active connection with a pneumatically or electrically controlled shutoff valve in the inert gas cylinder/cylinder to determine the required (adjustable) quality (set point) of the inert gas in a target area (1) (depending on quantity) and produce inert gas inflow and/or inert gas outflow for a period. The oxygen sensor is combined with a flue gas inlet system (11, 12) for fire detection and activation of the fire extinguishing system to the extent that the flue gas inlet system is arranged in second function to the inert gas mixture inlet and the inert gas mixture produced in the target area is supplied over the flue gas inlet line and its suction nozzles through the inert gas flow and oxygen sensor. The flue gas inlet system is assigned in the second intake function-inert gas mixture. The oxygen sensor is downstream to the flue gas inlet system and partially activates the release of the overflowing inert gas mixture. The oxygen sensor is continuous with the slidably adjustable target area that is rinsed with in soluble gas mixture during inert gas flow phase of the fire extinguishing system and produced over a ventilator (14) and suction lines with suction nozzles of the flue gas inlet system. The oxygen sensor controls or regulates the inert gas in the target area via a switching logic, a pneumatically or electrically actuated valve in the ON-OFF or modulating function. The pneumatic or electric controlled shut-off valve is used in the primary inert gas for flooding and post-flooding or alternatively in the inert gas for the post-flood. The oxygen sensor operates over the switching logic instead of pneumatically or electrically controlled shut-off valve to directly release the inert gas solution from inert gas flask in at predetermined intervals. The oxygen sensors are used for power measurements of a sample flooding, where the spatial positions of the oxygen sensors or the suction nozzle are matched to the positions of the oxygen-measuring points. Timed program for controlling inert gas flow at specific interval is used instead of oxygen sensors for controlling.