Induction heating cooking apparatus, operation of which is interrupted by container eccentricity
US7075044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Sep 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2213/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction-heating cooking apparatus, operation of which is interrupted by container eccentricity is disclosed. Upon receiving an input signal varying with the degree of eccentricity of a container, the apparatus changes a reference signal for determining the presence or absence of a small load in proportion to a pulse-width control signal controlling the width of an inverter driving pulse. Although the eccentricity of the container occurs in a normal heating operation and completely escapes from a cook zone, the apparatus determines the occurrence of a no-load state, and interrupts an operation of an inverter circuit, resulting in increased stability of a circuit and a product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.