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公开(公告)号：US20230171856A1
公开(公告)日：2023-06-01
申请号：US17917760
申请日：2021-03-22
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Chuhyoung CHO , Seongho SON , Seonho JEON , Jongseong JI
CPC classification number: H05B6/1272 , H05B6/06
Abstract: An induction heating type cooktop according to an embodiment of the present disclosure may include a case; a cover plate configured to be coupled to the upper end of the case and provided with an upper plate portion on which an object to be heated is disposed; a thin film configured to be coated on the upper plate portion; a first working coil and a second working coil provided inside the case; an inverter configured to be connected to the first working coil; and a first switch configured to be connected between the first working coil and the second working coil. The first switch may determine whether the first working coil and the second working coil are connected in series.
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公开(公告)号：US20230156872A1
公开(公告)日：2023-05-18
申请号：US17916479
申请日：2021-03-19
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Chuhyoung CHO , Jongseong JI
CPC classification number: H05B6/065 , H05B6/1272
Abstract: An induction heating type cooktop according to an embodiment of the present disclosure includes: a case; a cover plate configured to be coupled to an upper end of the case and provided with an upper plate portion on which an object to be heated is disposed; a thin film configured to be coated on the upper plate portion and having an opening in a center thereof; a working coil provided inside the case and including a first working coil and a second working coil; and at least one inverter configured to be driven to allow electric currents to flow through the first working coil and the second working coil, wherein a direction of the electric current flowing through the first working coil is the same as or different from a direction of the electric current flowing through the second working coil according to the object to be heated.
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公开(公告)号：US20230134447A1
公开(公告)日：2023-05-04
申请号：US17914912
申请日：2021-03-19
Inventor： Younghwan KWACK , Seongho SON , Seonho JEON , Chuhyoung CHO , Jongseong JI , Keeyoung SON , Boogyo SIM
Abstract: The present disclosure relates to an induction heating type cooktop and includes a case; a cover plate configured to be coupled to the upper end of the case and provided with an upper plate portion on which an object to be heated is disposed; a working coil provided inside the case; a thin film configured to be coated on the upper plate portion and to be inductively heated by the working coil; and an adiabatic material provided between the upper plate portion and the working coil, in which the thin film may be formed to have at least one closed loop that does not include a central region of the working coil.
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34.发明申请公开(公告)号：US20210315068A1
公开(公告)日：2021-10-07
申请号：US17027071
申请日：2020-09-21
Applicant: LG Electronics Inc.
Inventor： Chuhyoung CHO , Seongho SON , Younghwan KWACK , Seonho JEON , 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 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.
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公开(公告)号：US20210313871A1
公开(公告)日：2021-10-07
申请号：US17082450
申请日：2020-10-28
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho Son , Seonho Jeon , Chuhyoung Cho , Jongseong JI
IPC: H02M1/08
Abstract: A method is provided for operating a resonant power conversion apparatus The method may include charging a capacitor connected to a power source in parallel, and determining a discharge time point and a discharge period of a discharge circuit, where the discharge circuit includes a resistor and a switch connected in series and is connected to the capacitor in parallel. The method may also include outputting, by a switch control circuit, a switch control signal by determining the switch control signal based on the discharge time point and the discharge period, and discharging the charged capacitor through the resistor based on the switch control signal applied to the switch. A resonant power conversion apparatus for performing the above-described method is provided.
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Patent Agency Ranking
公开(公告)号：US20210259060A1
公开(公告)日：2021-08-19
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
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：US20210195699A1
公开(公告)日：2021-06-24
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
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.
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公开(公告)号：US20210127461A1
公开(公告)日：2021-04-29
申请号：US17142819
申请日：2021-01-06
Inventor： Younghwan KWACK , Jaekyung YANG , Seongho SON , Yongsoo LEE , Jeehoon JUNG , Hwapyeong PARK , Mina KIM
Abstract: An induction heat cooking apparatus that includes: a rectifier that is configured to convert alternating current (AC) voltage supplied from an external power source into direct current (DC) voltage; an inverter that is configured to generate current based on DC voltage received from the rectifier and provide the current to output nodes; heating coils that are configured to, based on the current generated by the inverter, generate magnetic fields for providing heat; a first capacitive unit that includes one or more resonance capacitors and that is coupled between the output nodes; a second capacitive unit that includes one or more wireless power transfer (WPT) capacitors and that is configured to be coupled between the output nodes; and a mode conversion switch that is configured to couple the second capacitive unit to the first capacitive unit in parallel is disclosed.
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公开(公告)号：US20190357317A1
公开(公告)日：2019-11-21
申请号：US16216166
申请日：2018-12-11
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Jaekyung YANG , Yongsoo LEE
Abstract: The present disclosure relates to an induction heating device having an improved control algorithm and an improved circuit structure. In one embodiment of the present disclosure, an induction heating device includes: a first board having, thereon: a first working coil; a first inverter for performing a switching operation to apply a resonant current to the first working coil; and a first control unit configured for controlling an operation of the first inverter; and a second board having, thereon: a second working coil; a second inverter for performing a switching operation to apply a resonant current to the second working coil; and a second control unit configured for controlling an operation of the second inverter, wherein the first control unit is configured for enabling the first and second working coils to operate concurrently at an in-phase or 180-degrees out-of-phase.
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公开(公告)号：US20180192479A1
公开(公告)日：2018-07-05
申请号：US15862537
申请日：2018-01-04
Inventor： Younghwan KWACK , Jaekyung YANG , Seongho SON , Yongsoo LEE , Jeehoon JUNG , Hwapyeong PARK , Mina KIM
CPC classification number: H05B6/065 , F24C15/106 , H02M3/06 , H02M7/103 , H05B1/0202 , H05B6/062 , H05B6/1236 , Y02B40/123
Abstract: An induction heat cooking apparatus that includes: a rectifier that is configured to convert alternating current (AC) voltage supplied from an external power source into direct current (DC) voltage; an inverter that is configured to generate current based on DC voltage received from the rectifier and provide the current to output nodes; heating coils that are configured to, based on the current generated by the inverter, generate magnetic fields for providing heat; a first capacitive unit that includes one or more resonance capacitors and that is coupled between the output nodes; a second capacitive unit that includes one or more wireless power transfer (WPT) capacitors and that is configured to be coupled between the output nodes; and a mode conversion switch that is configured to couple the second capacitive unit to the first capacitive unit in parallel is disclosed.
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