Reversible automatic fan control system
US6750623B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Dec 17, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P7/044
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of operating a fan control system associated with a radiator may include rotating a fan in a first direction at an operating speed to direct cool air toward the radiator for a first predetermined period of time. After expiration of the first predetermined period of time, rotation of the fan in the first direction may be decelerated. The method may also include accelerating the fan in a second direction opposite to the first direction and rotating the fan in the second direction at a predetermined speed for a second predetermined period of time. After expiration of the second predetermined period of time, rotation of the fan in the second direction may be decelerated, and the fan may then be accelerated in the first direction to the operating speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.