Device for converting kinetic energy of a flowing medium to electrical energy

A wind turbine for converting kinetic energy of wind to electrical energy, comprising:

• a u-shaped frame;
• a rotor for placing in the wind;
• and
• an electrical generator having a stator and a generator rotor part that is connected to the rotor,
• wherein the rotor comprises an outer tube, a central shaft and at least one vane mounted on an inner side of the outer tube and extending to the central shaft and mounted on said central shaft,
• wherein the outer tube is mounted on the u-shape frame for rotation about a horizontal axis,
• the u-shaped frame comprising a front spacer bracket arranged in front of the rotor, a rear spacer bracket arranged behind the rotor, and a central construction, wherein the front spacer bracket is provided with a bearing supporting a front end of the central shaft of the rotor, and wherein the rear spacer bracket supports the generator, and wherein the generator rotor part is mounted on a rear end of the central shaft so that the rotary motion of the rotor is directly converted into motion of the generator rotor part, and wherein the generator carries a bearing supporting the rear end of the central shaft of the rotor, and wherein the central construction is configured to be mounted on an upright allowing the frame and rotor to swivel about a vertical axis so that the rotor is orientable in flow direction of the wind,
• wherein a length of the outer tube in a horizontal direction amounts to at least 25% of a minimum diameter of the outer tube in a vertical direction,
• and wherein the generator is operatively connected to the central shaft and is configured for converting a rotating motion of the central shaft to electricity.