Device for impregnating an insulation of a winding bar of an electrical machine
US7189070B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Dec 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/127
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for impregnating an insulation of a winding bar of an electric machine includes a container accommodating the winding rod and connected to a tank containing an impregnation agent. The container, which remains open during the impregnation process, is surrounded by an evacuation container to create a negative pressure within the container. To achieve a more rapid penetration of the impregnation agent and to simplify the overall process, a vacuum-tight sleeve acts as the container, the sleeve being encompassed by a pressure-resistant sleeve, and a conduit of an assembly that generates a vacuum leads into the interior of the sleeve. The impregnation agent is supplied with a pressure that is lower than the prevailing pressure in the pressure-resistant sleeve. The container can be a multi-part tool defining an interior for surrounding and accommodating the winding bar in a positive fit at least during an evacuation and impregnation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.