Radial compressor rotor

1. A radial compressor rotor, comprising:

a wheel disk arranged on the rotor; and

a plurality of blades arranged uniformly in a circumferential direction on the wheel disk where each blade has

a leading edge,

a trailing edge,

a hub edge that adjoins the wheel disk, and

an outer edge opposite to the hub edge,

wherein a surface of the blade includes a double-curved section and a ruled-surface section, such that a generatix along a transverse direction between the hub edge and the outer edge is subdivided into a curved line and a straight line, the curved line and the straight line corresponding respectively to the double-curved section and the ruled-surface section, wherein the transition from the double-curved section to the ruled-surface section is continuous.

2. The radial compressor rotor as claimed in claim 1 , wherein the double-curved section adjoins the outer edge and the ruled-surface section adjoins the hub edge.

3. The radial compressor rotor as claimed in claim 2 , wherein the double-curved section and/or the ruled-surface section extends from the leading edge up to the trailing edge.

4. The radial compressor rotor as claimed claim 3 , wherein the double-curved section and the ruled-surface section are approximately the same size.

5. The radial compressor rotor as claimed in claim 4 , wherein the surface of the blades has a plurality of double-curved sections separated from one another by a ruled-surface section.

6. The radial compressor rotor as claimed in claim 5 , wherein two double-curved sections are provided adjacent to the hub edge and the outer edge, where a ruled-surface section is arranged between the double-curved sections.

7. The radial compressor rotor as claimed in claim 6 , wherein the entire surface of the blades is curved and has a curved line as generatix.

8. The radial compressor rotor as claimed in claim 7 , wherein the leading edge is curved.

9. The radial compressor rotor as claimed in claim 8 , wherein the curvature trend of the generatix varies from the leading edge in the direction toward the trailing edge.

10. The radial compressor rotor as claimed in claim 9 , wherein the wheel disk, the blades and/or a cover disk forms separate units.

11. A method of producing a radial compressor rotor, comprising:

providing wheel disk on the rotor; and

providing blades on the wheel disk arranged uniformly in the circumferential direction, wherein at least regions of a surface of the blades are produced by end mills in such a way that the surface of the blade includes a double-curved section and a ruled-surface section, such that a generatix along a transverse direction, between a hub edge of the blade adjoining the wheel disk and an outer edge opposite to the hub edge, is subdivided into a curved line and a straight line the curved line and the straight line corresponding respectively to the double-curved section and the ruled-surface section, wherein the transition from the double-curved section to the ruled-surface section is continuous.

12. The method as claimed in claim 11 , wherein the double-curved section adjoins the outer edge and the ruled-surface section adjoins the hub edge.

13. The method as claimed in claim 12 , wherein the double-curved section and/or the ruled-surface section extends from the leading edge up to the trailing edge.

14. The method as claimed claim 13 , wherein the double-curved section and the ruled-surface section are approximately the same size.

15. The method as claimed in claim 14 , wherein the surface of the blades has a plurality of double-curved sections separated from one another by a ruled-surface section.

16. The method as claimed in claim 15 , wherein two double-curved sections are provided adjacent to the hub edge and the outer edge, where a ruled-surface section is arranged between the double-curved sections.