Electric rotating machine with bearing seals
US7291947B2 · kind B2 · utility
9Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2005 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | May 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact of a lubricating oil and the sealing oil in the bearing, and leakage of the hydrogen gas outside the machine are prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.