Fan with impeller based on an audio spread-spectrum
US10648486B2 · kind B2 · utility
3Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Feb 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B15/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan for cooling an electronic device is described, wherein the fan can include an enclosure and a motor secured within the enclosure. The fan can also include an impeller to be turned by the motor, the impeller having a plurality of blades, wherein an angular spacing of the blades results in an audio spread-spectrum within a range of audio frequencies. In some examples, an arrangement of the blades has a center of mass below a threshold, and the angular spacing of the blades and a blade pass frequency (BPF) results in sound that is distributed in the range of audio frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.