Wind machine with aerodynamic elements to concentrate and accelerate an Aeolian flow entering from outside

A wind machine comprising aerodynamic elements that concentrate and accelerate a wind flow entering from outside, wherein said wind machine is provided with a housing, with a main air intake, a first section converging up to an element having a substantially spherical or cylindrical section, a second and a third section, downwind said first converging section, each of said first section, said second section and said third section causing said wind flow to contact said element having a substantially spherical or cylindrical section substantially up to its median line, a first and a second auxiliary air intake having first ends arranged substantially perpendicularly with regard to air flow in said main air intake, and a second ends coincident with said median line of said element having a substantially spherical or cylindrical section, said element having a substantially spherical or cylindrical section also having a substantially linear portion, downwind said first and second air intakes, a fourth and a fifth section, each one substantially reproducing the profile of said second and third sections and a diverging channel that expands in cross-section after said fourth and fifth sections, at the outlet of which a device exploiting said wind flow is provided.