Sealing apparatus for electrical generator ventilation system
US6779799B2 · kind B2 · utility
20Cited by
24References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Nov 27, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/56
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A combined brush/labyrinth tooth seal is provided between a gas shield and the fan tips in the ventilation system of an electrical generator. At least a pair of brush seals straddle a labyrinth tooth providing a close or zero radial clearance with the tips of the fan blades. The brush seals are provided in two double-row bi-directional form. In one embodiment, the brush bristles are slanted toward the fan in a generally axially opposite direction. In a further embodiment, the slanted brush seals engage either the opposite sides of the fan blades or the fan blade tips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.