Induction cooker
US11805577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2017 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Jul 5, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction cooker includes a first coil, a second coil, a third coil, and a controller. Responsive to determining that a heating target placed above a first coil is formed of a magnetic material, a heating target placed above a second coil is formed of a magnetic material or a composite containing a magnetic material and a non-magnetic material, and a heating target placed above a third coil is formed of a non-magnetic material, the controller stops an operation of a first inverter circuit, causes a second inverter circuit and a third inverter circuit to operate, and sets a frequency of a third high-frequency current to be higher than a frequency of a second high-frequency current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.