Impeller with improved heat dissipation performance and reduced noise and heat dissipation fan having the same
US11566638B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2022 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Mar 3, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/304
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A three-bladed impeller providing a cooling airflow in air, with increased heat-dissipating efficiency and reduced noise includes a hub and three blades, the blades are arranged around the hub. Each blade is arched along its axial length from the front of fan to the back and also arched radially from the hub end of each blade to the outside tip. The back edge of each blade includes first and second slots, arranged alternately, the width of each first slot is λ1, the width of each of each second slot is λ2, the comparative sizes between λ2 and λ1 are in a ratio range of 1.6:1 to 1.8:1 (λ2:λ1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.