Fan flow directing features, systems and methods
US11339793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2019 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Mar 28, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/403
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems and methods are provided for mitigating recirculation of backflow fluid through a fan. The fan includes a housing having a channel that extends from an inlet to an outlet of the housing. A rotor assembly is positioned within the channel and is configured to direct a fluid flow from the inlet to the outlet. The rotor assembly includes a hub, a plurality of fan blades, and a shroud disposed about a circumference of the fan blades, where a radial gap extends between the shroud and the housing. The radial gap is configured to receive a portion of the fluid flow from the outlet as backflow fluid. The rotor assembly also includes an inlet flange that is configured receive the backflow fluid from the radial gap and to direct the backflow fluid in a direction away from the inlet prior to discharge of the backflow fluid from the radial gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.