Device and method for automatically controlling rotating speed of fan cooler
US6182902A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jul 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S236/09
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A thermal control method and device for automatically regulating the rotational speed of the fan cooler are disclosed in the present invention. The thermal control device comprises a control-voltage generator having a temperature-sensing device for sensing a temperature and generating a control voltage, a pulse modulator for modulating the pulse width of a clock signal with respect to the control voltage to generate a pulse modulation signal, and a fan driver for regulating the rotational speed of the fan cooler, modulating the refrigerant efficiency, and maintain the internal temperature of an apparatus, thereby consuming moderate power and making less noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.