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US 11,441,783 B2Granted
Induction heating type cooktop having improved use convenience
AssigneeLG Electronics Inc.
InventorsWontae Kim, Seongho Son, Jaekyung Yang, Yongsoo Lee, Hyunwoo Jun
Life of this patent
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Abstract
An induction heating type cooktop includes a case, a cover plate that is coupled to an upper end of the case and that includes an upper plate configured to seat an object on an upper surface of the upper plate, a working coil disposed in the case and configured to heat the object, a thin film attached on the upper plate, and a thermal insulating member disposed vertically between a lower surface of the upper plate and the working coil.
Claims19
An induction heating type cooktop, comprising:
- a case;
- a cover plate coupled to an upper end of the case, the cover plate comprising an upper plate configured to seat an object on an upper surface of the upper plate;
- a working coil disposed in the case and configured to heat the object;
- a thin film attached on the upper plate, the thin film having an electrical resistance value to be heated by induction by the working coil;
- and
- a thermal insulating member disposed vertically between a lower surface of the upper plate and the working coil,
- wherein a skin depth of the thin film is greater than a thickness of the thin film, and
- wherein the working coil is configured to:
- based on a magnetic object being placed on the upper surface of the upper plate, heat the magnetic object by an eddy current induced in the magnetic object by a magnetic field of the working coil passing through a surface of the thin film, and
- based on a non-magnetic object being placed on the upper surface of the upper plate, heat the thin film by an eddy current induced in the thin film by the magnetic field to thereby heat the non-magnetic object by the heated thin film.
7 more elements
Dependencies are inferred from the claim text.