Patent · US Active

Fan motor with digital controller for applying substantially constant driving current

US7444070B2 · kind B2 · utility

5Cited by

31References

3Claims

0Family size

Assignee

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

Inventors

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

Key dates

Filing date	Oct 19, 2005
Grant date	Oct 28, 2008
Priority date	—
Expiry date	Jul 31, 2026

Classification

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

Abstract

An improved fan arrangement features a radial or diagonal fan (370) with which a direct current motor (32) is associated as its drive motor, further comprising a digital control element (23, 24) which executes a program, for controlling the current flowing through the direct current motor (32), which program is so configured that it applies 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.