Shaft-hub connection

1. A shaft-hub connection ( 1 ) comprising a shaft ( 10 ), a hub ( 20 ) and a filler material ( 30 ), wherein the shaft ( 10 ) comprises an end portion ( 11 ) at one end, wherein a receiving region ( 21 ) is arranged in the hub ( 20 ), characterized in that the end portion ( 11 ) is arranged in the receiving region ( 21 ) with the interposition of the filler material ( 30 ), wherein the filler material ( 30 ) fills geometries in the receiving region ( 21 ) and on the end portion ( 11 ) to create a form-fit between the shaft ( 10 ) and the hub ( 20 ) and to prevent axial and rotational movement of the shaft ( 10 ) relative to the hub ( 20 ), wherein the end portion ( 11 ) has a positioning portion ( 11 a ), wherein the filler material ( 30 ) fills geometries on the positioning portion ( 11 a ), wherein the receiving region ( 21 ) has a positioning region ( 21 a ), wherein the filler material ( 30 ) fills geometries formed on the positioning region ( 21 a ), wherein an outer diameter D 11a of the positioning portion ( 11 a ) is the same size as an inner diameter D 21a of the positioning region ( 21 a ).

2. The shaft-hub connection ( 1 ) as claimed in claim 1 , characterized in that the positioning region ( 21 a ) is arranged to surround the positioning portion ( 11 a ) externally.

3. The shaft-hub connection ( 1 ) as claimed in claim 1 , characterized in that at least one undercut surface ( 21 a 3 ) is formed on the positioning region ( 21 a ), wherein the filler material ( 30 ) engages the at least one undercut surface ( 21 a 3 ) to prevent axial movement of the shaft ( 10 ) relative to the hub ( 20 ).

4. The shaft-hub connection ( 1 ) as claimed in claim 3 , characterized in that the end portion ( 11 ) has a connecting portion ( 11 b ) adjacent to the positioning portion ( 11 a ) and a displacement portion ( 11 c ) adjoining said connecting portion, wherein at least one undercut surface ( 11 c 3 ) is formed on the displacement portion ( 11 c ), wherein the filler material ( 30 ) engages the at least one axial surface ( 11 c 3 ) to prevent axial movement of the shaft ( 10 ) relative to the hub ( 20 ).

5. The shaft-hub connection ( 1 ) as claimed in claim 1 , characterized in that an end face ( 22 ) formed on the hub ( 20 ) cooperates with a shoulder ( 12 ) formed on the shaft ( 10 ) in the axial direction of the shaft ( 10 ).

6. The shaft-hub connection ( 1 ) as claimed in claim 1 , characterized in that the filler material ( 30 ) consists of a casting compound.

7. A turbine ( 62 , 75 , 89 , 91 ) having a rotor wheel ( 20 ) arranged on a shaft ( 10 ) by a shaft-hub connection ( 1 ) as claimed in claim 1 .

8. A waste heat recovery system ( 100 ) having a circuit ( 100 a ) guiding a working medium, wherein the circuit ( 100 a ) comprises a pump ( 102 ), an evaporator ( 103 ), a bypass valve ( 1 ), an expansion machine ( 104 ) and a condenser ( 105 ) in the flow direction of the working medium, wherein the expansion machine ( 104 ) is formed as the turbine as claimed in claim 7 .

9. A heat pump ( 70 ) having a condenser ( 71 ), an evaporator ( 72 ) and the turbine ( 75 ) as claimed in claim 7 , wherein the rotor wheel ( 20 ) acts as a compressor between the evaporator and the condenser.

10. A micro gas turbine ( 80 ) having a turbine ( 89 ) as claimed in claim 7 , wherein the rotor wheel ( 20 ) acts as compressor for a turbine impeller of the micro gas turbine.

11. A micro gas turbine ( 90 ) having a turbine ( 91 ) as claimed in claim 7 , wherein the rotor wheel acts as a turbine impeller of the micro gas turbine ( 90 ).

12. An internal combustion engine ( 61 ) having a turbine as claimed in claim 7 , wherein the rotor wheel ( 20 ) acts as an auxiliary compressor for compressing the combustion air ( 65 ) supplied to the internal combustion engine ( 61 ).

13. The shaft-hub connection ( 1 ) as claimed in claim 1 , characterized in that the end portion ( 11 ) has a positioning portion ( 11 a ), wherein the geometries on the end portion ( 11 ) are formed on the positioning portion ( 11 a ), and wherein the geometries on the end portion are formed as grooves ( 11 a 1 ) in the axial direction.

14. The shaft-hub connection ( 1 ) as claimed in claim 13 , characterized in that the receiving region ( 21 ) has a positioning region ( 21 a ), wherein the geometries in the receiving region ( 21 ) are formed on the positioning region ( 21 a ), and wherein the geometries in the receiving region are formed as through grooves ( 21 a 1 ) in the axial direction.

15. The shaft-hub connection ( 1 ) as claimed in claim 1 , characterized in that the filler material ( 30 ) consists of a casting compound, wherein the casting compound can harden independently.

16. The shaft-hub connection ( 1 ) as claimed in claim 4 , wherein the displacement portion ( 11 c ) has therein grooves ( 11 c 1 ) extending in the axial direction.

17. A shaft-hub connection ( 1 ) comprising a shaft ( 10 ), a hub ( 20 ) and a filler material ( 30 ), wherein the shaft ( 10 ) comprises an end portion ( 11 ) at one end, wherein a receiving region ( 21 ) is arranged in the hub ( 20 ), characterized in that the end portion ( 11 ) is arranged in the receiving region ( 21 ) with the interposition of the filler material ( 30 ), wherein the end portion ( 11 ) has a positioning portion ( 11 a ), a displacement portion ( 11 c ), and a connecting portion ( 11 b ) between the positioning portion ( 11 a ) and the displacement portion ( 11 c ), wherein the positioning portion ( 11 a ) includes a plurality of grooves ( 11 a 1 ) extending in an axial direction of the shaft ( 10 ), wherein the displacement portion ( 11 c ) has therein a plurality of grooves ( 11 c 1 ) extending in the axial direction, wherein the hub includes an undercut region ( 21 b ) and a positioning region ( 21 a ) having through grooves ( 21 a 1 ) in the axial direction and forming at least one undercut surface ( 21 a 3 ), wherein the filler material ( 30 ) fills the grooves ( 11 a 1 , 11 c 1 ) of the positioning portion ( 11 a ) and the displacement portion ( 11 c ) and the through grooves of the positioning region ( 21 a ) to create a form-fit between the shaft ( 10 ) and the hub ( 20 ) and to prevent axial and rotational movement of the shaft ( 10 ) relative to the hub ( 20 ), wherein an outer diameter D 11a of the positioning portion ( 11 a ) is the same size as an inner diameter D 21a of the positioning region ( 21 a ) and the positioning region ( 21 a ) surrounds the positioning portion ( 11 a ).

18. A shaft-hub connection ( 1 ) comprising a shaft ( 10 ), a hub ( 20 ) and a filler material ( 30 ), wherein the shaft ( 10 ) comprises an end portion ( 11 ) at one end, wherein a receiving region ( 21 ) is arranged in the hub ( 20 ), wherein the end portion ( 11 ) has a positioning portion ( 11 a ), wherein the receiving region ( 21 ) has a positioning region ( 21 a ), characterized in that the end portion ( 11 ) is arranged in the receiving region ( 21 ) with the interposition of the filler material ( 30 ), wherein the filler material ( 30 ) fills geometries in the positioning region ( 21 a ) and on the positioning portion ( 11 a ) to create a form-fit between the shaft ( 10 ) and the hub ( 20 ) and to prevent axial and rotational movement of the shaft ( 10 ) relative to the hub ( 20 ), and wherein an outer diameter D 11a of the positioning portion ( 11 a ) is the same size as an inner diameter D 21a of the positioning region ( 21 a ).