Air cooling device, generator, air guiding device, wind power installation and method for producing a generator and a wind power installation

An air cooling device configured to air cool a generator of a wind power installation using wind, the air cooling device comprising:

• a cooling unit of the generator having a cooling unit outer surface, the wind flowing onto the cooling unit outer surface for air cooling of the generator in an operating state of the wind power installation,
• an air deflector arranged on the cooling unit, the air deflector extending outwardly in a radial direction starting from the cooling unit outer surface, and wherein the air deflector, in the operating state of the wind power installation, is configured to deflect the wind in the radial direction inwardly toward the cooling unit,
• wherein the air deflector has a first air deflection unit which extends outwardly at an acute angle in the radial direction starting from the cooling unit outer surface and/or forms with the cooling unit a converging first air deflection channel, wherein the converging first air deflection channel is configured in an operating state of the wind power installation to deflect the wind for the air cooling in the radial direction inwardly in the direction of the cooling unit,
• wherein the cooling unit extends in the axial direction between a first end, which in the operating state of the wind power installation is arranged upstream relative to the wind direction of the wind, and a second end, which in the operating state of the wind power installation is arranged upstream of the first end relative to the wind direction of the wind,
• wherein the first air deflection unit is arranged in a first third and/or a first half of the cooling unit relative to the extension of the cooling unit starting from the first end in the axial direction,
• a second air deflection unit arranged offset in the axial direction relative to the first air deflection unit and extending outwardly at an acute angle in the radial direction starting from the cooling unit outer surface and forming with the cooling unit a converging second air deflection channel which in the operating state of the wind power installation is configured to deflect the wind for the air cooling in the radial direction inwardly in the direction of the cooling unit, and
• a third air deflection unit is arranged offset in the axial direction relative to the first and/or second air deflection unit and extending outwardly at an acute angle in the radial direction starting from the cooling unit outer surface and forming with the cooling unit a converging third air deflection channel which in the operating state of the wind power installation is configured to deflect the wind for the air cooling in the radial direction inwardly in the direction of the cooling unit, and
• wherein starting from the cooling unit outer surface, the first air deflection unit extends at a first acute angle, the second air deflection unit extends at a second acute angle, and the third air deflection unit extends at a third acute angle.