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公开(公告)号：US20240306269A1
公开(公告)日：2024-09-12
申请号：US18288898
申请日：2021-07-13
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON , Yongsoo LEE , Jaekyung YANG
CPC classification number: H05B6/065 , H05B6/1272 , H05B2213/05
Abstract: An induction heating type cooktop can include an upper plate configured to support an object to be heated, an intermediate heating element overlapping with the upper plate, a first working coil and a second working coil configured to generate magnetic fields that pass through at least one of the object or the intermediate heating element, and an inverter configured to control a first direction of first current flowing through the first working coil and a second direction of second current flowing through the second working coil. Also, an area of a loop generated by current induced in the intermediate heating element varies according to a type of the object.
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公开(公告)号：US20240188195A1
公开(公告)日：2024-06-06
申请号：US18441580
申请日：2024-02-14
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 , Y02B40/00
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：US20230254951A1
公开(公告)日：2023-08-10
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
CPC classification number: H05B6/647 , H05B3/0014 , H05B6/105 , H05B6/129 , H05B6/707 , H05B6/6402 , H05B6/6482 , H05B6/6488
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.
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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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公开(公告)号：US20200288542A1
公开(公告)日：2020-09-10
申请号：US16810491
申请日：2020-03-05
Applicant: LG Electronics Inc.
Inventor： Hyunwoo JUN , Wontae KIM , Seongho SON
Abstract: An induction heating-type cooktop include a case, a cover plate comprising an upper plate that is coupled to an upper end of the case and that is configured to seat an object to be heated on an upper surface of the upper plate, a working coil disposed in the case and configured to heat the object, a module base that is disposed at a lower surface of the upper plate and that includes a thin layer attached to a surface of the module base, and a thermal insulation material disposed between the module base and the working coil.
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Patent Agency Ranking
公开(公告)号：US20200154529A1
公开(公告)日：2020-05-14
申请号：US16678781
申请日：2019-11-08
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Jaekyung YANG , Yongsoo LEE
IPC: H05B6/06
Abstract: Described is a method for controlling an induction heating device having one or more working coils and a controller configured to perform pre-testing based on a single pulse. The method includes: selecting a working coil to be tested, performing a detection operation to detect a vessel disposed on the working coil and generate a first output pulse; comparing at least one of: a count of the first output pulse to a predetermined reference count range, or an on-duty time of the first output pulse to a predetermined reference time range; and adjusting, by the controller, a duration of an on-state of the single pulse based on (i) a result of the comparison of the count of the first output pulse to the predetermined reference count range or (ii) a result of the comparison of the on-duty time of the first output pulse to the predetermined reference time range.
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公开(公告)号：US20200029398A1
公开(公告)日：2020-01-23
申请号：US16390686
申请日：2019-04-22
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON , Jaekyung YANG , Yongsoo LEE
Abstract: A method for sensing a container includes: charging an induction heating circuit; sensing a current applied to the induction heating circuit, converting a current value of the current into a first voltage value; comparing the first voltage value with a resonance reference value; generating a resonance of the current; sensing a resonant current generated in the induction heating circuit; converting the resonant current into a second voltage value; comparing the second voltage value with a count reference value; generating one or more output pulses; comparing a count of the one or more output pulses with a reference count, or comparing an on-duty time of the one or more output pulses with a reference time; and based on (i) the comparison of the count with the reference count or (ii) the comparison of the on-duty time with the reference time, determining whether an object is present on a working coil.
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公开(公告)号：US20180177000A1
公开(公告)日：2018-06-21
申请号：US15843862
申请日：2017-12-15
Applicant: LG Electronics Inc.
Inventor： Seongho SON , Jaekyung YANG , Hyojin CHOI , Yongsoo LEE
Abstract: An induction heat cooking apparatus includes a rectifier configured to convert an AC voltage supplied from a power source into a DC voltage, a battery configured to store power, a switch configured to connect to at least one of the rectifier or the battery, an inverter connected to the switch and configured to receive a first voltage from at least one of the rectifier or the battery and convert the first voltage to a second voltage, and a heating coil configured to receive the second voltage from the inverter and generate magnetic fields in which the heating coil is configured to heat a cooking device based on the generated magnetic fields.
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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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