Fan for air handling unit (AHU) assembled from several parts with radial and axial retainers
US11994145B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2020 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Aug 20, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/56
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an Air Handling Unit, AHU, including a fan inducing a flow in an air ventilation ducting system. The fan includes a front disc, a back plate and fan blades manufactured as separate units. The fan provides a radial or mixed flow. The fan blades have an upper edge including upper attachment protrusions attached to the front disc and a lower edge including lower attachment protrusions attached to the back plate. The fan blade includes at least two upper and lower attachment protrusions protruding through the front disc and back plate indentations, respectively, forming axial retainers. An axial locker on the protruding portion provides a retaining axial force between the front disc and the back plate. The fan further includes another other upper and lower attachment protrusion cooperating with front disc and back plate indentations, respectively, forming radial retainers preventing the blades from dislocating in the radial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.