Cross-flow wind turbine with twin blades and inclined rotation axes

A Darrieus wind turbine comprising twin cross-flow turbines connected to a generator, the generator comprising a shaft designed to be driven in rotation under the effect of a rotation of the turbines, the wind turbine comprising:

• a first turbine movable in rotation about a first rotation axis, the first turbine comprising several blades distributed about the first rotation axis,
• a second turbine movable in rotation about a second rotation axis, the second turbine comprising several blades distributed about the second rotation axis,
• the first rotation axis and the second rotation axis being symmetrical to each other with respect to a vertical axis,
• wherein:
• each turbine extends about a rotation axis between a lower end and an upper end, the lower end being closer to the generator than the upper end,
• the lower end and the upper end of each turbine are aligned with the rotation axis of said turbine,
• each turbine blade comprises:
• a lower portion, extending from the lower end,
• an upper portion, extending from the upper end,
• each blade extending from the lower end towards the upper end so that:
• the radius of the blade, corresponding to the distance between the blade and the rotation axis along the lower portion, gradually increases as the distance from the lower end increases,
• the radius of the blade gradually decreases along the upper portion as the distance from the upper end decreases,
• and wherein:
• the first rotation axis and the second rotation axis are inclined with respect to the vertical axis at the same angle of inclination of between 25° and 50°,
• so that each rotation axis converges on a single generator, so that the horizontal shaft of the generator is driven in rotation by the first turbine and by the second turbine,
• the wind turbine defines a median plane, the median plane:
• being perpendicular to a downstream plane, the downstream plane containing the first rotation axis and the second rotation axis,
• passing through a point of intersection of the first rotation axis and the second rotation axis,
• the median plane forms a plane of symmetry of the wind turbine.