Device for closing a ventilation opening in a wall or ceiling in the event of a fire comprises a motor which transfers a closure from a first position into a second position

摘要

Device for closing a ventilation opening in a wall or ceiling in the event of a fire comprises a motor (11) which transfers a closure (7) from a first position into a second position. Preferred Features: An opening (6) is provided for the passage of air and has a free cross-sectional surface area which is preferably at least 100% of the cross-sectional surface area of the ventilation opening in the wall or ceiling. The opening is arranged in a housing.