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公开(公告)号：US20200029397A1
公开(公告)日：2020-01-23
申请号：US16390665
申请日：2019-04-22
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Kyelyong KANG , Seongho SON , Seonho JEON
Abstract: An induction heating device includes an induction heating circuit, a sensor configured to measure current applied to the induction heating circuit, and a controller. The controller includes: a switch driving unit configured to control operation of an inverter unit and to allow a resonance of the current, a container sensing unit, and a control unit. The container sensing unit is configured to: convert a first current value before the resonance into a first voltage value; control the switch driving unit to charge a working coil; compare the first voltage value with a resonance reference value; convert a second current value after the resonance into a second voltage value; generate one or more output pulses; and compare the second voltage value with a count reference value. The control unit is configured to determine whether an object is present on the working coil based on the one or more output pulses.
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公开(公告)号：US20250039999A1
公开(公告)日：2025-01-30
申请号：US18715944
申请日：2022-05-25
Applicant: LG Electronics Inc.
Inventor： Chuhyoung CHO , Seongho SON , Younghwan KWACK , Seonho JEON , Jongseong JI
IPC: H05B6/12
Abstract: Provided is an induction heating type cooktop that senses overheating of a thin film to prevent the thin film from being overheated. The induction heating type cooktop includes a case, a cover plate coupled to an upper end of the case and configured to comprise an upper plate, on which an object to be heated is disposed on a top surface thereof, a thin film applied on the upper plate, a working coil configured to generate magnetic fields for heating the object to be heated, and a controller configured to determine whether the thin film is overheated and reduce an output level when the thin film is overheated.
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公开(公告)号：US20240188200A1
公开(公告)日：2024-06-06
申请号：US18526458
申请日：2023-12-01
Applicant: LG ELECTRONICS INC.
Inventor： Seungbok OK , Seongjun KIM , Seonho JEON
CPC classification number: H05B6/1263 , H05B6/062 , H05B2213/04
Abstract: A cooking appliance can include an upper plate configured to support an object to be heated; a working coil configured to generate magnetic fields for heating the object; a temperature sensor configured to sense a first temperature of the upper plate; at least one sub temperature sensor configured to sense a second temperature of the upper plate; and a sensor support member including a main mounting portion and a sub mounting portion, the temperature sensor being mounted on the main mounting portion and the at least one sub temperature sensor being mounted on the sub mounting portion. Also, the sensor support member is disposed in a direction extending away from a center of the working coil.
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14.发明公开公开(公告)号：US20240064878A1
公开(公告)日：2024-02-22
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
CPC classification number: H05B6/1272 , H05B6/065
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：US20230337336A1
公开(公告)日：2023-10-19
申请号：US18213699
申请日：2023-06-23
Applicant: LG Electronics Inc.
Inventor： Seonho JEON , Seongho SON , Younghwan KWACK , Chuhyoung CHO , Jongseong JI
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.
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Patent Agency Ranking
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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19.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：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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