Variable area diffuser vane geometry
US7140839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 23, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diffuser is provided having a spaced apart shroud and backing plate. A diffuser vane is provided between the backing plate and shroud. The vane includes first and second sealing surfaces opposite from one another and adjacent to the backing plate and shroud. Leading and trailing surfaces are arranged opposite from one another and adjoin the first and second sealing surfaces. The first sealing surface includes a first protrusion extending therefrom approximate to the leading surface with a gap extending from the trailing surface to the first protrusion. The second surface includes a second protrusion extending therefrom proximate to the trailing surface with a second gap extending from the leading surface to the second protrusion. The surfaces provide four corners such that the protrusions are arranged on opposite corners from one another to create a pressure differential between the first and second sealing surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.