Patent · US Expired

Fan motor with digital controller for applying substantially constant driving current

US6997684B2 · kind B2 · utility

42Cited by

29References

15Claims

0Family size

Assignee

ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

Alexander Hahn · Roetgen, DE
Hermann Rappenecker · Vöhrenbach, DE

Key dates

Filing date	Aug 13, 2001
Grant date	Feb 14, 2006
Priority date	—
Expiry date	Apr 16, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/28
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a fan arrangement comprising a radial or diagonal fan (370) with which a direct current motor (32) is associated as drive motor, further comprising a digital control element (23, 24) such as a microcontroller or microprocessor, associated with that direct current motor (32), and comprising a program, associated with that digital control element (23, 24), for controlling the current flowing through the direct current motor (32), which program is embodied to generate a substantially constant current in the motor (32) in the working rotation speed range of the fan.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.