Ring fan and shroud assembly
US9903387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2013 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/164
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ring fan and shroud assembly having a fan, a shroud member, a recirculating flow member, and a plurality of curved guide vanes. The fan has a hub with a plurality of projecting fan blades and an outer ring member. The shroud member is positioned around the outer ring member. The recirculating flow member is on the shroud member and is positioned forward adjacent the outer ring member. The guide vanes are positioned within the recirculating flow member and define an inlet angle, which is nearly tangential with an outer entry diameter radial surface of the recirculating flow member, and an outlet angle that is nearly radial along an inner exit diameter of the recirculating flow member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.