Blade wheel for a rotary electric machine and rotary electric machine comprising a blade wheel

A rotating electric machine that comprises the following features:

• a rotor shaft, and
• an impeller wheel comprising:
• a hollow cylindrical base body having an outer peripheral surface, extending around an axis of rotation of the impeller wheel in a circumferential direction,
• a first end region that encircles the base body in the circumferential direction, and a second end region that encircles the base body in the circumferential direction, wherein the first end region and the second end region lie opposite one another in the direction of the axis of rotation and are circular,
• a groove extending along the peripheral surface in the circumferential direction, the groove extending between the first end region and the second end region of the base body, and
• at least one impeller element that extends across the groove from the first end region to the second end region, such that at least one impeller element forms a trough-shaped recess in the peripheral surface of the base body of the impeller wheel and is configured to generate an air movement away from the peripheral surface during rotation of the impeller wheel about the axis of rotation,
• wherein the impeller wheel is arranged on the rotor shaft and is connected to the rotor shaft in a non-rotatable manner.

A motor vehicle, comprising:

• a rotating electric machine comprising:
• a rotor shaft, and
• an impeller wheel comprising:
• a hollow cylindrical base body having an outer peripheral surface, extending around an axis of rotation of the impeller wheel in a circumferential direction,
• a first end region that encircles the base body in the circumferential direction, and a second end region that encircles the base body in the circumferential direction, wherein the first end region and the second end region lie opposite one another in the direction of the axis of rotation and are circular,
• a groove extending along the peripheral surface in the circumferential direction, the groove extending between the first end region and the second end region of the base body, and
• at least one impeller element that extends across the groove from the first end region to the second end region, such that at least one impeller element forms a trough-shaped recess in the peripheral surface of the base body of the impeller wheel and is configured to generated an air movement away from the peripheral surface during rotation of the impeller wheel about the axis of rotation,
• wherein the impeller wheel is arranged on the rotor shaft and is connected to the rotor shaft in a non-rotatable manner.