Patent · US Expired

Method and device for detecting heating processes

US6888110B2 · kind B2 · utility

3Cited by

7References

16Claims

0Family size

Assignee

E.G.O. Elektro-Geraetebau GmbH · DE

Inventors

Martin Baier · Ettlingen, DE
Wolfgang Wittenhagen · Oberderdingen, DE
Ralf Dorwarth · Oberderdingen, DE

Key dates

Filing date	Jun 25, 2004
Grant date	May 3, 2005
Priority date	—
Expiry date	Jun 25, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2213/07
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and the associated device for detecting cooking or boiling processes in a glass ceramic hob are described, to which power is supplied by a power supply by means of a heating element and said power is transmitted to the cooking vessel standing thereon. During a cooking process a temperature profile of the hob is measured and evaluated. The temperature profile is evaluated after ending the power supply and for evaluation purposes a temperature profile gradient is determined. During evaluation, a normal cooking or boiling process is detected if the gradient exceeds a predetermined threshold. During evaluation, a disturbed or faulty cooking or boiling process is detected if the gradient is equal to or smaller than a predetermined threshold. Such a disturbed or faulty cooking or boiling process can arise through the cooking vessel boiling dry or empty.

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