Inert gas fire extinguisher for reducing the risk and for extinguishing fires in a protected space

摘要

The invention relates to an inert gas fire extinguisher (100) for reducing the risk and for extinguishing fires in a protected space (10, 10-1, 10-2). In order to ensure that the protected space (10, 10-1, 10-2) can be inerted according to different adjustable event sequences, the inert gas fire extinguisher (100) comprises a pressure reducing device (6) with at least two parallel branches (21, 31, 41), wherein each parallel branch (21, 31, 41) comprises a pressure reducing device (22, 32, 42). Each parallel branch (21, 31, 41) can be connected to a high pressure collecting line (3) and to a low-pressure extinguishing line (4, 4-1, 4-2) by way of a controllable valve (23, 33, 43), wherein each pressure reducing device (22, 32, 42) is adapted to reduce a high input pressure to a low output pressure according to a known pressure reducing characteristic.