Patent ID: 11962218
Assignee: EBM-PAPST MULFINGEN GMBH & CO. KG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An electrical machine, comprising:
a stator comprising an electrically conductive winding support electrically connected with earth or a reference potential and a central body defining a rotation axis and a stator winding;
a bearing arrangement comprising a first bearing arranged on the central body and a second bearing arranged on the central body, wherein the winding support of the stator is arranged in an axial direction parallel to the rotation axis between the first bearing and the second bearing;
a rotor rotatably supported around the rotation axis by means of the bearing arrangement;
an electrically conductive first shielding unit electrically connected with earth or a reference potential that comprises a first ring part extending in a ring-shaped manner in a circumferential direction around the rotation axis and extending starting from a radial inner end radially outward to a radial outer end, wherein the radial inner end is arranged between the first bearing and the winding support and is connected with the central body; and
an electrically conductive second shielding unit that is electrically connected with earth or a reference potential that comprises a second ring part extending in a ring-shaped manner in circumferential direction around the rotation axis and extending starting from a radial inner end radially outward to a radial outer end, wherein the radial inner end is arranged between the second bearing and the winding support and is connected with the central body, wherein the first ring part and/or the second ring part comprise through holes arranged with distance to one another in the circumferential direction, and a first edge section of an edge of each of the through holes is arranged at an air guide part extending obliquely over a respective one of the through holes and a second edge section of the edge of each of the through holes is arranged opposite the first edge section in the circumferential direction and the second edge section is off-set in the axial direction relative to the first edge section.