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公开(公告)号：US20250098039A1
公开(公告)日：2025-03-20
申请号：US18726554
申请日：2022-05-25
Applicant: LG Electronics Inc.
Inventor： Chuhyoung CHO , Seongho SON , Younghwan KWACK , Seonho JEON , Jongseong JI
Abstract: Provided is an induction heating type cooktop provided with an intermediate heating body to improve heating efficiency with respect to a magnetic body and a nonmagnetic body. The induction heating type cooktop includes an upper plate, on which an object to be heated is disposed, an intermediate heating body installed on the upper plate, a working coil configured to generate magnetic fields for heating the object to be heated, an inverter driven to supply current to the working coil, and a shielding coil in which the current is selectively induced according to kinds of object to be heated.
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公开(公告)号：US20230363061A1
公开(公告)日：2023-11-09
申请号：US18142826
申请日：2023-05-03
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON
CPC classification number: H05B6/1272 , H05B6/062 , H05B2206/022
Abstract: A cooking appliance includes a coil height adjustor configured to adjust a height of a working coil or a plurality of working coils located at different height and an inverter configured to control the current flow through the working coil or at least one working coil of the plurality of working coils.
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公开(公告)号：US20230354484A1
公开(公告)日：2023-11-02
申请号：US18142346
申请日：2023-05-02
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON
CPC classification number: H05B6/065 , H05B6/1272
Abstract: A cooking appliance includes an upper plate configured to support an object to be heated, a first intermediate heating body located at the upper plate, a plurality of working coils configured to generate magnetic fields coupled to at least one of the object to be heated and the first intermediate heating body, an inverter configured to apply current to the plurality of working coils, and a controller configured to control the inverter so that at least one of the plurality of working coils does not operate in a portion of a cycle in a first heating mode.
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14.发明公开公开(公告)号：US20230292411A1
公开(公告)日：2023-09-14
申请号：US18020387
申请日：2020-12-15
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Chuhyoung CHO , Jongseong JI
IPC: H05B6/12
CPC classification number: H05B6/1218 , H05B6/1236 , H02M5/4585
Abstract: The present disclosure includes an induction heating cooktop and a wireless indicator for indicating an operation state of the cooktop, the wireless indicator comprising: a closed loop coil; and a light-emitting device driven by a voltage which is induced in the closed loop coil through an induced magnetic field generated by a working coil of the cooktop.
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公开(公告)号：US20190357320A1
公开(公告)日：2019-11-21
申请号：US16180593
申请日：2018-11-05
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Jaekyung YANG , Yongsoo LEE
Abstract: An induction heating device includes: a first board including a first working coil, a first inverter configured to apply a resonant current to the first working coil, a first current transformer configured to adjusting a magnitude of the first resonant current, a first control unit configured to control the first inverter; and a second board including a second working coil, a second inverter configured to apply a resonant current to the second working coil, a second current transformer configured to adjust a magnitude of the second resonant current, a first relay configured to selectively connect the second working coil to the second current transformer or to the first working coil, a second relay configured to selectively connect the second working coil to the first working coil or to the second resonant capacitor, and a second control unit configure to control the second inverter, the first relay, and the second relay.
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Patent Agency Ranking
公开(公告)号：US20190297685A1
公开(公告)日：2019-09-26
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
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.
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公开(公告)号：US20190045586A1
公开(公告)日：2019-02-07
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
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.
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公开(公告)号：US20240057226A1
公开(公告)日：2024-02-15
申请号：US18231828
申请日：2023-08-09
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Chuhyoung CHO , Jongseong JI
CPC classification number: H05B6/065 , H05B6/1272 , H05B2213/05
Abstract: A cooking appliance includes a top plate portion configured to support an object to be heated; an intermediate heating body configured to transfer heat to the object; and a plurality of working coils configured to generate a magnetic field to heat at least a portion of the object to be heated and the intermediate heating body. Also, the intermediate heating body includes one or more heating areas corresponding to one or more working coils among the plurality of working coils.
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公开(公告)号：US20230371139A1
公开(公告)日：2023-11-16
申请号：US18198156
申请日：2023-05-16
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON
CPC classification number: H05B6/1272 , H05B6/065
Abstract: A cooking appliance includes a magnetic field control module that selectively cancels a portion of a magnetic field reaching an intermediate heating element generated from a working coil. The magnetic field control module may include a canceling coil and a switch capable of closing or opening the canceling coil.
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公开(公告)号：US20230354483A1
公开(公告)日：2023-11-02
申请号：US18142356
申请日：2023-05-02
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON
CPC classification number: H05B6/062 , H05B6/1254 , H02M7/537 , H05B6/1263 , H02H3/08 , H05B2213/05
Abstract: A cooking appliance includes an upper plate configured to support an object to be heated, a working coil configured to generate a magnetic field to heat the object to be heated, an inverter configured apply current to the working coil, an intermediate heating body located at the upper plate, the intermediate heating body configured to generate an eddy current when the magnetic field passes therethrough, and a switch configured to connect a first point and a second point on the intermediate heating body.
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