Abstract: A cyclonic or anti-cyclonic conversion tower which consists of a central vortical duct (1), and at least one convector made up of two vertical membranes or screens (2) and (3), generated by a curve and which are limited at one of their sides by the central vortical duct (1), and at least tow stiffeners (4) and (5) per convector, there being a blocking device (6) per convector, a diffuser (23), a deflector (24), and means for converting kinetic energy into electrical or mechanical energy, the blocking devices (6) having the shape of a guiding crown and can turn on the outer circumference of the central vortical duct (1), the general context adopting the shape of a cylinder or a cylinder ending in an inverted cone trunk.