Labyrinth seal having a pressure inducing fan means
US5611546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | May 17, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/927
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shaft sealing system for an oil-lubricated shaft bearing in a stationary, externally closed housing filled with liquid vapor may include a shaft projecting into the housing which is mounted in the shaft bearing. The shaft bearing is sealed by means of a sealing arrangement. Sealing of the oil-lubricated shaft bearing that is improved and, in particular, independent of external air supply, is achieved by a counterpressure fan. The counterpressure fan generates a dynamic pressure directed against the sealing arrangement by drawing in outside air, and is held nonrotatably on the shaft on the side of the sealing arrangement facing away from the housing. The sealing arrangement has a flow channel corresponding to the counterpressure fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.