VENTILATION CABINET FOR A SMOKE-REMOVAL INSTALLATION COMPRISING AN ADJUSTMENT

摘要

The invention relates to a ventilation duct for a smoke evacuation system of a building, comprising a collection chamber (4) exhaust air of the building and outdoor air having an air inlet (6), and compartments (8, 14) containing a turbine (10) and a motor (16) driving said turbine (10), characterized in that the air inlet (6) of the collection compartment (4) has a mobile flap (20) for adjusting the air passage section.