Airing and ventilation system

Abstract

The invention relates to an airing and ventilation system.According to the invention, the system comprises an air-screw disc (1), with at least one pair of separate rigid segments (2 and 2’) with fixed geometry made entirely of metal, in the shape of circular sectors, flat and intercalated with at least another pair of flaps / blades which are, in their turn, divided each into two thermal-mechanical actuators of flap / blade type (3), (3'), (3''), (3'''), of variable geometry, made of an alloy with two-way shape memory properties, having, depending on the temperature, the shape of a flat disc in the inactive state, the disc made of segments blocking the air flow, all of the above being fixed on a rotor (4) mounted on a shaft (5) in connection with a rotary electrical machine (6) and placed in a unitary manner in the center of a tube (7).