Fan
US10920790B2 · kind B2 · utility
2Cited by
1References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Mar 1, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/281
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan includes a frame, an impeller, and a motor. The impeller is disposed in the frame and includes a hub, a plurality of annular blades, and a plurality of spacers. The annular blades are stacked along an axial direction of the hub and disposed around the outer periphery of the hub. The extension directions of the annular blades are perpendicular to the axial direction of the hub. Each of the spacers is disposed between the two adjacent annular blades. The motor is disposed in the frame and drives the impeller to rotate to induce an airflow. The thickness of each annular blade is smaller than or equals to 0.2 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.