公开(公告)号：EP4132222A1

公开(公告)日：2023-02-08

申请号：EP21776779.7

申请日：2021-03-19

申请人： LG Electronics, Inc. ,  Korea Advanced Institute of Science and Technology

发明人： KWACK, Younghwan ,  SON, Seongho ,  JEON, Seonho ,  CHO, Chuhyoung ,  JI, Jongseong ,  SON, Keeyoung ,  SIM, Boogyo

IPC分类号： H05B6/12 ,  H05B6/06 ,  H05B6/36

摘要： 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.

公开(公告)号：EP4333562A1

公开(公告)日：2024-03-06

申请号：EP21939444.2

申请日：2021-07-13

申请人： LG Electronics Inc.

发明人： KWACK, Younghwan ,  SON, Seongho ,  LEE, Yongsoo ,  YANG, Jaekyung

IPC分类号： H05B6/12 ,  H05B6/06

摘要： An induction heating type cooktop according to an embodiment of the present disclosure comprises: an upper part on which an object to be heated is placed; an intermediate heating element installed on the upper plate; a first working coil and a second working coil for generating a magnetic field passing through at least the object to be heated or the intermediate heating element; and an inverter unit for controlling a first direction of a first current flowing through the first working coil and a second direction of a second current flowing through the second working coil, wherein according to the type of the object to be heated, the area of a loop formed by the current induced by the intermediate heating element may be changed.

公开(公告)号：EP4164334A1

公开(公告)日：2023-04-12

申请号：EP22193896.2

申请日：2021-01-27

申请人： LG Electronics, Inc.

发明人： KWACK, Younghwan ,  SON, Seongho ,  JEON, Seonho ,  CHO, Chuhyoung ,  JI, Jongseong

IPC分类号： H05B6/12

摘要： 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.

公开(公告)号：EP4138296A1

公开(公告)日：2023-02-22

申请号：EP21789003.7

申请日：2021-04-08

申请人： LG Electronics, Inc.

发明人： KWACK, Younghwan ,  SON, Seongho ,  JEON, Seonho ,  CHO, Chuhyoung ,  JI, Jongseong

IPC分类号： H02M7/12 ,  H02H7/12 ,  H02M7/219

摘要： A protection circuit of a resonant converter according to an embodiment of the present disclosure may include a comparator configured to compare a DC link voltage of the resonant converter with a voltage across both ends of one of first and second switches, and a microcomputer configured to detect whether zero voltage switching is performed, based on output signals of the comparator.

公开(公告)号：EP3890436A1

公开(公告)日：2021-10-06

申请号：EP21151620.8

申请日：2021-01-14

申请人： LG Electronics, Inc.

发明人： KWACK, Younghwan ,  SON, Seongho ,  JEON, Seonho ,  CHO, Chuhyoung ,  JI, Jongseong

IPC分类号： H05B6/06

摘要： 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.

公开(公告)号：EP3557944B1

公开(公告)日：2020-07-15

申请号：EP18203030.4

申请日：2018-10-29

申请人： LG Electronics Inc.

发明人： KWACK, Younghwan ,  SON, Seongho ,  YANG, Jaekyung ,  LEE, Yongsoo

IPC分类号： H05B6/06

公开(公告)号：EP4322708A1

公开(公告)日：2024-02-14

申请号：EP23190152.1

申请日：2023-08-08

申请人： LG Electronics Inc.

发明人： KWACK, Younghwan ,  SON, Seongho ,  JEON, Seonho ,  CHO, Chuhyoung ,  JI, Jongseong

IPC分类号： H05B6/12

摘要： A cooking appliance is disclosed. The cooking appliance according to an embodiment of the present disclosure may include a top plate portion on which an object to be heated is placed; an intermediate heating body heated to transfer heat to the object to be heated; and a plurality of working coils generating a magnetic field to heat at least a portion of the object to be heated and the intermediate heating body, wherein the intermediate heating body is formed of heating areas corresponding to one or more working coils.

公开(公告)号：EP4274383A1

公开(公告)日：2023-11-08

申请号：EP23170981.7

申请日：2023-05-02

申请人： LG Electronics Inc.

发明人： KWACK, Younghwan ,  SON, Seongho

IPC分类号： H05B6/12

摘要： A cooking appliance according to an embodiment of the present disclosure may include an upper plate, on which an object to be heated is disposed; a working coil configured to generate magnetic fields for heating the object to be heated; an inverter configured to drive so that current is supplied to the working coil; an intermediate heating body disposed on the upper plate and flowing with eddy current when the magnetic fields pass therethrough; and a switch configured to connect or disconnect one contact point and another contact point formed at different regions on the intermediate heating body.

公开(公告)号：EP4274377A1

公开(公告)日：2023-11-08

申请号：EP23170791.0

申请日：2023-04-28

申请人： LG Electronics Inc.

发明人： KWACK, Younghwan ,  SON, Seongho

IPC分类号： H05B6/06 ,  H05B6/12

摘要： A cooking appliance according to an embodiment of the present disclosure may include an upper plate, on which an object to be heated is disposed; an intermediate heating body installed on 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 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.

公开(公告)号：EP3890437A1

公开(公告)日：2021-10-06

申请号：EP21153658.6

申请日：2021-01-27

申请人： LG Electronics Inc.

发明人： CHO, Chuhyoung ,  SON, Seongho ,  KWACK, Younghwan ,  JEON, Seonho ,  JI, Jongseong

IPC分类号： H05B6/06 ,  H05B6/12

摘要： 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.