Blower fan
US12297840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2023 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Nov 20, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/182
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower fan includes a hub, a plurality of blades and a ring. The blades are arranged along and extend outwardly from an outer periphery of the hub. The ring is shaped in a circular ring form and couples a distal end portion of each blade. The distal end portion of each blade has a separation limiting structure that limits separation of a flow of air from the blade. Each blade has a shape that directs a flow direction of the air passing through the blade to the separation limiting structure of an adjacent blade which is an adjacent one of the plurality of blades located on a rear side of the blade in a fan rotational direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.