Fan control system
US11286942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2019 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | May 5, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fan control system includes an input unit receiving a domestic power signal, an operation controller, a first converter connected to the input unit and the operation controller, and a second converter connected to the first converter and a fan. Upon receipt of an operation signal outputted by the operation controller, the first converter switches from a normal mode where the domestic power signal is directly outputted as a converted power signal, to a converting mode where the domestic power signal having an attribute thereof varied for a preset duration is outputted as the converted power signal. The second converter outputs an output signal based on the converted power signal for controlling rotational speed of the fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.