Axial flow fan with hub isolation slots
US8651814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2012 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Mar 7, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/329
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An axial flow fan includes a hub rotatable about a central axis. The hub includes a front face and a cylindrical portion. A plurality of apertures is provided in the front face of the hub, each aperture at least partially defined by a first surface oriented non-parallel with the front face. A plurality of ribs is provided, each rib aligned with one of the plurality of apertures such that a free edge of the rib at least partially overlaps the respective one of the plurality of apertures. The fan further includes a plurality of lips, each lip coupled to the front face of the hub and aligned with one of the plurality of apertures that is not aligned with one of the plurality of ribs, each lip having a second surface, adjacent the first surface of a respective aperture, that at least partially overlaps the respective aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.