Low-frequency heating apparatus and method using magnetic field
US10524316B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2016 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Mar 24, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/129
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low-frequency heating apparatus is provided. The low-frequency heating apparatus includes a signal generator configured to generate an operation frequency for inducing a current through a coil unit surrounding an internal area of a housing of the heating apparatus, a power amplifier configured to amplify power of the operation frequency to a predetermined level and transmit the amplified operation frequency to the coil unit, the coil unit configured to be energized to heat an object provided inside the housing through a magnetic field generated by the current, and at least one processor configured to monitor an impedance value of the coil unit resonating at the operation frequency and control a resonant operation of the coil unit based on the impedance value of the coil unit and an impedance value of the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.