STATOR FOR AN ELECTRICAL MACHINE

Abstract

A stator for an electrical machine includes a flux return ring, a stator winding, and stator teeth located equidistantly along the flux return ring for accommodating the stator winding, wherein the flux return ring includes cooling elements.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a universal motor according to the related art, in a longitudinal sectional view

FIG. 2 shows a universal motor with an inventive stator in a first embodiment, in a cross section

FIG. 3 shows a second embodiment of the inventive stator, in a perspective view

FIG. 4 shows a third embodiment of the inventive stator, in a perspective view.

Claims

1. A stator for an electrical machine, comprising a flux return ring; a stator winding; stator teeth located equidistantly along said flux return ring for accommodating said stator winding, wherein said flux return ring includes cooling elements.

2. A stator as defined in claim 1, wherein said flux return ring has an inner surface, said cooling elements being provided on said inner surface of said flux return ring.

3. A stator as defined in claim 2, wherein said cooling elements are located on said inner surface of said flux return ring between two adjacent ones of said stator teeth.

4. A stator as defined in claim 1, wherein said flux return ring has an outer surface, said cooling elements being provided on said outer surface of said flux return ring.

5. A stator as defined in claim 1, wherein said flux return ring has at least one end face, said cooling elements being provided on said at least one end face of the flux return ring.

6. A stator as defined in claim 1, wherein said cooling elements of said flux return ring are configured as cooling fins.

7. A stator as defined in claim 6, wherein said cooling fins of said flux return ring are positioned axially.

8. A universal motor, comprising a stator, said stator including a flux return ring, a stator winding, stator teeth located equidistantly along said flux return ring for accommodating said stator winding, wherein said flux return ring includes cooling elements.