Integral tip seal in a fan-shroud structure
US6874990B2 · kind B2 · utility
19Cited by
16References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/326
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan-shroud structure 10 includes a fan 12 mounted for rotation about an axis B. The fan has a plurality of blades 20 with tips of the blades being coupled to an annular band 22. A shroud 26, including an annular labyrinth seal 28, is disposed generally adjacent to the annular band thereby defining a gap 30 between the annular band and the seal. The seal has a corrugated profile and is constructed and arranged to provide resistance to air flow as air swirls and flows back into the gap and to minimize air leakage across the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.