Pole-changing asynchronous fan motor with continuously adjustable speed
US6066935A · kind A · utility
6Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1993 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Dec 2, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a fan installation with at least one pole-changing asynchronous motor (6, 7) for the driving of a fan (8, 9), a regulating device (14, 15) being provided by which the speed of rotation of the asynchronous motor (6, 7) is continuously regulatable within a predeterminable speed range by reducing the voltage. The speed of rotation of the fan (8, 9) can thus be matched to the required amount of air or quantity of heat to be dissipated by only a few switchovers or switchings-on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.