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US 2009/0021102 A1Published application
Electrical Machine and Method of Retrofitting an Electrical Machine
AssigneeSiemens Aktiengesellschaft
InventorsMark Hofel, Udo Winkelmann
Life of this patent
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Abstract
There is described an electrical machine with a rotor shaft, a slip ring, arranged on the rotor shaft, and at least two sliding contacts arranged along the circumference of the slip ring for producing an electrical connection with the slip ring. The electrical machine has one or more extraction devices arranged between the at least two sliding contacts directly via the slip ring and intended for extracting abraded material produced at the slip ring.
Claims15
-10. (canceled)
An electrical machine, comprising:
- a rotor shaft;
- a slip ring arranged on the rotor shaft;
- at least two sliding contacts arranged along a circumference of the slip ring, to provide an electrical connection with the slip ring;
- a suction device arranged between the at least two sliding contacts directly over the slip ring, for sucking away abraded material produced on the slip ring;
- at least one further slip ring arranged on the rotor shaft;
- and
- a suction connection piece extending transversely with respect to the circumferential direction of the slip rings and covering at least one or two of the slip rings.
4 more elements
A method of retrofitting an electrical machine, comprising:
- providing the electrical machine having:
- a rotor shaft;
- a slip ring arranged on the rotor shaft;
- at least two sliding contacts arranged along a circumference of the slip ring, for producing an electrical connection with the slip ring;
- an arrangement of a suction device for sucking away abraded material produced on the slip ring being provided at a position between the at least two sliding contacts directly over the slip ring;
- and
- at least one further slip ring arranged on the rotor shaft and designed for an electrical potential which is different from an electrical potential provided for the first slip ring;
- providing the suction device with a suction connection piece, which extends transversely with respect to the circumferential direction of the slip rings;
- and
- arranging the suction connection piece such that the piece extends transversely with respect to the circumferential direction of the slip rings and covers at least one or two slip rings.
7 more elements
Dependencies are inferred from the claim text.