Wind turbine, a generator, a rotor housing, and a method for making the rotor housing

1. A rotor housing for a generator with an external rotor, the rotor housing comprising:

a support structure, wherein the support structure is cylindrical shaped,

a cone, and

a ring, wherein

the ring and the cone are attached together at an inner side of the cone in a horizontal plane, forming a front part of the rotor housing,

the support structure is attached to the cone at a front end of the support structure, forming a side part of the rotor housing, and

the support structure is formed out of segmented support structure parts.

2. The rotor housing as set forth in claim 1 , wherein

the cone is formed out of segmented cone parts.

3. The rotor housing as set forth in claim 2 , wherein

the number of segmented support structure parts equals the number of segmented cone parts.

4. The rotor housing as set forth in claim 2 , wherein

each segmented support structure part comprises at least a part of a segmented cone part.

5. The rotor housing as set forth in claim 2 , wherein

the support structure is formed out of six segmented support structure parts.

6. A rotor housing for a generator with an external rotor, the rotor housing comprising:

a support structure, wherein the support structure is cylindrical shaped,

a cone, wherein the cone is formed out of segmented cone parts, and

a ring, wherein the ring and the cone are attached together at an inner side of the cone in a horizontal plane, forming a front part of the rotor housing, the support structure is attached to the cone at a front end of the support structure, forming a side part of the rotor housing, and

the support structure is formed out of segmented support structure parts,

wherein each segmented cone part comprises a straight shaped side, and wherein the straight shaped side of the corresponding segmented cone part is opposed to a further side of this segmented cone part attached to the ring, thus the segmented cone parts together provide a hexagonal shape around the ring.

7. The rotor housing as set forth in claim 2 , wherein

each segmented cone part is attached to one support structure part and to the ring, each by bolting.

8. The rotor housing as set forth in claim 1 , wherein

each segmented support structure part is attached to another support structure part by bolting.

9. The rotor housing as set forth in claim 1 , wherein

a gap is formed between two segmented support structure parts being attached to each other.

10. The rotor housing as set forth in claim 9 , wherein

the gap between two segmented support structure parts being attached to each other, is between 0mm and 2mm.

11. The rotor housing as set forth in claim 1 , wherein

the ring is adapted to provide a housing for the bearing of the generator.

12. A generator with an external rotor, the generator comprising:

a rotor housing having

a support structure, wherein the support structure is cylindrical shaped,

a cone, and

a ring, wherein

the ring and the cone are attached together at an inner side of the cone in a horizontal plane, forming a front part of the rotor housing,

the support structure is attached to the cone at a front end of the support structure, forming a side part of the rotor housing, and

the support structure is formed out of segmented support structure parts.

13. A wind turbine, comprising

a generator device with an external rotor, and

the generator comprising a rotor housing according to claim 1 .

14. The rotor housing as set forth in claim 9 , wherein

the gap between two segmented support structure parts being attached to each other, is between 0mm and 1mm.

15. The rotor housing as set fourth in claim 9 , wherein

the gap between two segmented support structure parts being attached to each other, is between 0mm and 0.5mm.