公开(公告)号：US11729867B2

公开(公告)日：2023-08-15

申请号：US16849584

申请日：2020-04-15

Applicant: LG Electronics Inc.

Inventor： Seonho Jeon ,  Seongho Son ,  Younghwan Kwack ,  Chuhyoung Cho ,  Jongseong Ji

IPC: F24C15/10 ,  H05B1/02 ,  H05B6/10 ,  H05B6/12 ,  H05B6/06

CPC classification number: H05B6/062 ,  F24C15/104 ,  F24C15/105 ,  H05B1/0266 ,  H05B6/1245 ,  H05B2213/07

Abstract: An induction heating type cooktop includes an upper plate coupled to a top side of a case and configured to place an object to be heated on a top of the upper plate, a working coil disposed inside the case to heat the object, a thin film disposed on at least one of a top surface or a bottom surface of the upper plate, an insulator disposed between the bottom surface of the upper plate and the working coil, and a temperature sensor configured to measure a temperature of at least one of the thin film or the upper plate by a plurality of thermocouples.

公开(公告)号：US11175429B2

公开(公告)日：2021-11-16

申请号：US16687940

申请日：2019-11-19

Applicant: LG Electronics Inc.

Inventor： Younghwan Kwack ,  Seongho Son ,  Jaekyung Yang ,  Yongsoo Lee

IPC: G01V3/10 ,  H05B6/06

Abstract: A method controls an induction heating device that is configured to operate based on a multi-phase power supply and that includes a working coil configured to heat an object and a controller configured to detect the object. The method includes: receiving voltage information related to a first input voltage and a second input voltage that are supplied by the multi-phase power supply and that have different phases from each other; selecting a reference voltage among the first input voltage and the second input voltage based on the voltage information; determining a detection time point, which corresponds to a time instant at which a detection operation is to be performed for detecting the object on the working coil, based on the reference voltage; and performing the detection operation at the detection time point.

公开(公告)号：US11153942B2

公开(公告)日：2021-10-19

申请号：US16198194

申请日：2018-11-21

Applicant: LG Electronics Inc.

Inventor： Hyo Jin An ,  Younghwan Kwack ,  Seongho Son ,  Jaekyung Yang ,  Yongsoo Lee

IPC: H05B6/12 ,  H05B6/10 ,  H05B6/06

Abstract: An induction heating device includes a casing, a cover plate coupled to a top of the casing, and a first induction heating module located within the casing and configured to heat an object on the cover plate. The first induction heating module includes: a working coil; an inverter configured to apply a resonant current to the working coil; a light guide located outside of the working coil, where the light guide includes a light-emission surface that is located at a top of the light guide, that is configured to indicate whether the working coil is driven, and that is configured to indicate an intensity of the working coil; a light emitting element vertically located below the light guide and configured to emit light to the light guide; and a control module configured to control the inverter and the light emitting element.

公开(公告)号：US12156318B2

公开(公告)日：2024-11-26

申请号：US17006464

申请日：2020-08-28

Applicant: LG Electronics Inc.

Inventor： Younghwan Kwack ,  Jongseong Ji ,  Seongho Son ,  Seonho Jeon ,  Chuhyoung Cho

IPC: H05B6/06 ,  H05B6/04 ,  H05B6/12

Abstract: An induction heating type cooktop includes: a case, a cover plate coupled to a top of the case and having an upper plate that is configured to support a target object, a thin film disposed on at least one of a top of the upper plate or a bottom of the upper plate, a working coil provided in the case and configured to inductively heat the thin film, a memory storing information on one or more correlations between a temperature of the thin film and a plurality of components of an equivalent circuit associated with the thin film, the plurality of components including an inductor component and a resistor component, and a controller configured to operate the working coil and determine estimated temperature information corresponding to the inductor component and the resistor component of the equivalent circuit.

公开(公告)号：US12013130B2

公开(公告)日：2024-06-18

申请号：US17881246

申请日：2022-08-04

Applicant: LG Electronics Inc.

Inventor： Wontae Kim ,  Seongho Son ,  Jaekyung Yang ,  Yongsoo Lee ,  Hyunwoo Jun

IPC: F24C7/08 ,  H05B3/74 ,  H05B6/10 ,  H05B6/12

CPC classification number: F24C7/087 ,  H05B3/748 ,  H05B6/105 ,  H05B6/1209 ,  H05B6/1263

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.

公开(公告)号：US11441783B2

公开(公告)日：2022-09-13

申请号：US16558039

申请日：2019-08-31

Applicant: LG Electronics Inc.

Inventor： Wontae Kim ,  Seongho Son ,  Jaekyung Yang ,  Yongsoo Lee ,  Hyunwoo Jun

IPC: F24C7/08 ,  H05B3/74 ,  H05B6/10 ,  H05B6/12

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.

公开(公告)号：US10980156B2

公开(公告)日：2021-04-13

申请号：US16678767

申请日：2019-11-08

Applicant: LG Electronics Inc.

Inventor： Seongjun Kim ,  Seongho Son ,  Yongsoo Lee

IPC: H05K7/20 ,  H05B6/06 ,  H05K5/02 ,  H05B6/42

Abstract: An induction heating device includes a case having a lower plate that defines an inlet and an exhaust slit; a cover plate coupled to the case; a working coil disposed inside the case; an indicator substrate support coupled to the lower plate and disposed below the working coil; an inverter substrate disposed on a lower surface of the indicator substrate support and including an inverter and a first heat sink configured to dissipate heat generated from the inverter; and a first blowing fan disposed at the lower plate and configured to draw air from an outside of the case through the inlet and discharge the air to the inverter substrate. The exhaust slit is configured to discharge, to an area below the lower plate, at least a portion of air discharged from the first blowing fan to the inverter substrate.

公开(公告)号：US10973091B2

公开(公告)日：2021-04-06

申请号：US16054372

申请日：2018-08-03

Applicant: LG Electronics Inc.

Inventor： Seongho Son ,  Taewoong Kong ,  Younghwan Kwack ,  Jaekyung Yang ,  Yongsoo Lee ,  Hyojin Choi

IPC: H05B6/06 ,  H05B6/08 ,  H05B6/04 ,  F24C7/06 ,  F24C7/08 ,  H05B6/12

Abstract: Disclosed herein is an induction heat cooking apparatus including a power supply configured to supply an alternating current (AC) voltage, a rectifier configured to rectify the supplied AC voltage into a direct current (DC) voltage, first and second switching units configured to control switching such that the DC voltage from the rectifier is alternately applied to a working coil, a comparison unit configured to sense current flowing in the working coil and to compare the sensed current with a predetermined reference value to output pulses, and a controller configured to determine whether a cooking vessel is present on the working coil based on the output pulses.

公开(公告)号：US12200848B2

公开(公告)日：2025-01-14

申请号：US18501911

申请日：2023-11-03

Applicant: LG Electronics Inc.

Inventor： Chuhyoung Cho ,  Seongho Son ,  Younghwan Kwack ,  Seonho Jeon ,  Jongseong Ji

IPC: H05B6/12 ,  H05B6/06

Abstract: An induction heating type cooktop includes a case, an upper plate coupled to a top of the case and configured to support an object, a working coil disposed inside the case and configured to heat the object, a thin film arranged at a top surface of the upper plate or a bottom surface of the upper plate, at least one temperature sensor configured to measure a temperature of at least one of components of the induction heating type cooktop, the components including the thin film, and a microcontroller unit (MCU) configured to drive the working coil and to control an output of the working coil based on whether the temperature satisfies at least one condition that is preset for the at least one of the components.

公开(公告)号：US12120802B2

公开(公告)日：2024-10-15

申请号：US18136593

申请日：2023-04-19

Applicant: LG Electronics Inc.

Inventor： Wontae Kim ,  Hyunwoo Jun ,  Jaekyung Yang ,  Sunghun Sim ,  Seongho Son

IPC: H05B6/64 ,  H05B3/00 ,  H05B6/10 ,  H05B6/12 ,  H05B6/70

CPC classification number: H05B6/647 ,  H05B3/0014 ,  H05B6/105 ,  H05B6/129 ,  H05B6/6402 ,  H05B6/6482 ,  H05B6/6488 ,  H05B6/707

Abstract: A cooking appliance includes a housing that defines a cavity therein, a door connected to the housing and configured to open and close the cavity, a microwave (MW) heating module configured to emit microwaves into the cavity, and an induction heating (IH) module configured to emit a magnetic field towards the cavity. The IH module includes a working coil that is configured to generate the magnetic field and a thin film that is disposed between the cavity and the working coil.