Patent · US Active

Method and arrangement for supplying power to several induction coils in an induction apparatus

US7910865B2 · kind B2 · utility

16Cited by

5References

15Claims

0Family size

Assignee

E.G.O. Elektro-Geraetebau GmbH · DE

Inventors

Thomas Haag · Rodgau, DE
Jorg Bogel · Oberderdingen, DE
Hartmut Friedrich · Bretten, DE

Key dates

Filing date	Nov 2, 2007
Grant date	Mar 22, 2011
Priority date	—
Expiry date	Dec 29, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH05B6/065
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An arrangement for controlling induction coils of an induction cooking hob so as to minimize noise production resulting from intermodulation of certain frequencies of operation. The induction coils are operated in two modes, with a first mode at the same frequency fg so to produce a low intermodulation or differential frequency, or at a second mode having a high differential frequency of about 18 kHz. Alternating back and forth between said modes of operation makes it possible to reach predefined average values for the power of the induction coils for a given time period, while at the same time minimizing development of disturbing noise.

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