Method for designing a blower wheel scroll cage
US7206724B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2003 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Aug 21, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for determining the shape of a scroll cage for a forward-curved centrifugal blower wheel in a blower housing having a blower cut-off end including determining the blower wheel dimensions, determining the blower wheel clearance, determining the distance from the center of the blower wheel to the discharge point of the scroll cage at the tangential point of the scroll cage and the blower housing, selecting a diffusing angle, calculating a development angle and plotting the scroll cage profile in polar coordinates. The method can include iteratively adjusting the diffusing angle and re-plotting the scroll cage profile and running simulations to determine the optimum profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.