VENTILATION SYSTEM WITH A ROTATABLE AIR FLOW GENERATOR AND ONE OR MORE MOVEABLE REGISTERS AND METHOD FOR OBTAING VENTILATION THROUGH THE VENTILATION SYSTEM

摘要

A ventilation system (1) for air ventilation is disclosed, comprising a continuous duct (5) having openings at both ends, an air flow generator (2) arranged inside the duct to be rotatable around an axis of rotation so that, positioned in different rotational positions, the air flow generator is capable of producing a substantially axial air flow in each of the two directions through the duct, respectively, one or more registers arranged to be moveable between different positions, in at least one of which positions the one or more registers (6) leave the duct (5) open for air passage, whereas in another of the positions the one or more registers (6) substantially block the air passage through the duct (5), means for rotating the air flow generator (2), and means for moving the one or more registers. Furthermore, methods for controlled active and passive ventilation, respectively, through the duct of such a ventilation system (1) are disclosed.