Dynamo-electrical machine
US12021423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2019 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Apr 5, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel dynamo-electrical machine is provided that can inhibit an increase in the height of a coil end positioned toward a turn portion and improve the cooling performance around the turn portion of a segment coil. A segment coil 31 includes a first linear portion 34r, a second linear portion 34a, and a turn portion 33 including a top portion 33c. The first linear portion 34r is inserted into a specified slot 22. The second linear portion 34a is inserted into another particular slot 22 different from the specified slot 22. The turn portion 33 extends from one end face portion of a stator core 21 toward the outside of the axial direction of the stator core 21 and connects the first linear portion 34r and the second linear portion 34a. The linear portions 34r and 34a of the multiple segment coils 31 are inserted and placed in the slots 22 in a layering manner from the inner periphery to the outer periphery in the radial direction. A bent portion 37 is formed between each of the linear portions 34r and 34a and the turn portion of the segment coils 31 layered in the radial direction. The bent portion 37 tilts the top portion 33c of the turn portion 33 toward the end face of the stator …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.