Cooled primary or secondary part of an electric motor
US6975051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2002 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Mar 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a primary part (1) or secondary part (31) of an electric motor (2), having a core (3) of a magnetically conductive material, which forms slots (4) for the windings (5), and at least one cooling tube (6), through which a coolant fluid (7) can flow, is inserted into the slots (4) under the windings (5). To assure that a primary part (1) or secondary part (31) of this kind is comparatively simple to produce and assemble and has increased cooling performance or increased cooling efficiency compared to the prior art, it is proposed that the effective slot cross section has an at least local retaining constriction (10, 11) relative to the cooling tube (6), so that the cooling tube is fixed by the retaining constriction (10, 11) in its seat in a receptacle region (12) of the slot (4), and the slot cross section in the receptacle region (12) has a contour (13) corresponding to the outer contour (14) of the cooling tube (6) in such a way that the cooling tube (6) has a surface contact (18) extending substantially over its length with the inner wall (19) of the receptacle region (12), the surface contact being at least local with respect to its outer circumference (1…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.