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公开(公告)号：US20210259061A1
公开(公告)日：2021-08-19
申请号：US17006549
申请日：2020-08-28
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Jongseong JI , Chuhyoung CHO
Abstract: An induction heating type cooktop includes: an upper plate coupled to a top of a case, the upper plate being configured to support a target object, a working coil provided in the case and configured to heat the 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 first temperature sensor configured to measure a temperature of the thin film, a second temperature sensor configured to measure a temperature of the upper plate, and a controller. The controller is configured to control the working coil to heat the target object based on a target output, and control an output of the working coil based on the measured temperature of the thin film and the measured temperature of the upper plate.
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2.发明申请公开(公告)号：US20180323736A1
公开(公告)日：2018-11-08
申请号：US15967670
申请日：2018-05-01
Applicant: LG Electronics Inc.
Inventor： Jongseong JI , Wontae KIM
CPC classification number: H02P7/2913 , F04D25/06 , F04D27/004 , F24C15/20 , H02P6/18 , H02P21/00 , H02P21/24 , H02P2205/01
Abstract: A method for controlling a brushless direct current (BLDC) motor is disclosed. The method includes: receiving a constant current; comparing the constant current to a reference current; based on the comparison revealing that the constant current is smaller than the reference current, providing a first speed command to the rotational speed control unit to increase a speed of the BLDC motor; based on the comparison revealing that the constant current is larger than the reference current, providing a second speed command to the rotational speed control unit to decrease a speed of the BLDC motor; based on the comparison revealing that the constant current is the same as the reference current, providing a third speed command to the rotational speed control unit to maintain a speed of the BLDC motor; and controlling, by the rotational speed control unit, a speed of the BLDC motor.
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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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4.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：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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Patent Agency Ranking
公开(公告)号：US20230170789A1
公开(公告)日：2023-06-01
申请号：US17919413
申请日：2021-04-08
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Chuhyoung CHO , Jongseong JI
CPC classification number: H02M1/32 , H02M3/155 , H02M1/0058
Abstract: A protection circuit of a resonant converter including first and second switches, where the protection circuit comprises: a comparator configured to (i) compare a direct current (DC) link voltage of the resonant converter with a voltage across both ends of one of the first or second switches and (ii) output one or more signals based on the comparison, and a microcomputer configured to detect whether zero voltage switching is performed, based on the one or more output signals from the comparator.
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公开(公告)号：US20210315067A1
公开(公告)日：2021-10-07
申请号：US17025559
申请日：2020-09-18
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Chuhyoung CHO , Jongseong JI
Abstract: An induction heating type cooktop includes a case, an upper plate coupled to a top of the case and configured to support a target heating object, a working coil disposed inside the case and configured to heat the target heating object, a thin film disposed at a top surface of the upper plate or a bottom surface of the upper plate, and an insulator disposed between the bottom surface of the upper plate and the working coil. The thin film includes a plurality of sub-thin films that are arranged about a central portion of the working coil. Each of the plurality of sub-thin films defines a closed loop surrounding the central portion of the working coil. The thin firm further includes a heat conduction member that is arranged in a predetermined pattern and contacts at least one of the plurality of sub-thin films.
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公开(公告)号：US20210281160A1
公开(公告)日：2021-09-09
申请号：US16987818
申请日：2020-08-07
Applicant: LG ELECTRONICS INC.
Inventor： Seonho JEON , Seongho SON , Younghwan KWACK , Chuhyoung CHO , Jongseong JI
Abstract: Provided is a resonant power conversion apparatus including a gate control circuit that controls a first switch to enter an On state and a second switch to enter an Off state at a first stage and controls the first switch to enter the Off state and the second switch to enter the On state at a second stage, a first current transformer that applies current to the first switch at the first stage and applies current to the second switch at the second stage, a load connected to the first current transformer in series, a second current transformer connected to the second switch, and a microcontroller unit (MCU) that determines whether to be zero voltage switching or non-zero voltage switching based on a current flowing in the first current transformer and the second current transformer in a process of transitioning from the first stage to the second stage.
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公开(公告)号：US20250048506A1
公开(公告)日：2025-02-06
申请号：US18923047
申请日：2024-10-22
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Jongseong JI , Seongho SON , Seonho JEON , Chuhyoung CHO
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.
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公开(公告)号：US20240381497A1
公开(公告)日：2024-11-14
申请号：US18660674
申请日：2024-05-10
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON , Jongseong JI
Abstract: A cooking appliance can include a top plate configured to support an object to be heated, a plurality of working coils configured to heat the object, a plurality of inverters configured to apply current to at least one of the plurality of working coils, and a controller configured to heat the object via at least one heating area among a first heating area, a second heating area and a third heating area, in which the first heating area corresponds to at least a first working coil among the plurality of working coils, the second heating area corresponds to at least a second working coil among the plurality of working coils, and the third heating area corresponds to a third working coil among the plurality of working coils.
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