公开(公告)号：US20210352772A1

公开(公告)日：2021-11-11

申请号：US17313354

申请日：2021-05-06

Applicant: LG ELECTRONICS INC. ,  UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

Inventor： Sihoon JEONG ,  Kyelyong KANG ,  Jinwook HAN ,  Hwa Pyeong PARK ,  Jee Hoon JUNG

IPC: H05B6/06 ,  H02M7/5387 ,  H05B6/12

Abstract: An induction heating apparatus according to one embodiment may confirm a feature of a container and determine an operation mode based on the feature of the container before performing an operation of heating the container. In one embodiment, the operation mode of the induction heating apparatus may be determined as any one of a frequency doubler mode, a half bridge mode, and a full bridge mode. In one embodiment, a power control mode of the induction heating apparatus may be determined based on an operation mode of the induction heating apparatus. In one embodiment, the power control mode of the induction heating apparatus may be determined as any one of an asymmetric pulse width modulation (APWM) mode and a phase shift mode.

公开(公告)号：US20190387585A1

公开(公告)日：2019-12-19

申请号：US16477753

申请日：2018-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Bong Jin CHO ,  Jinwook HAN ,  Seongho SON

IPC: H05B6/06 ,  H05B6/04 ,  H05B6/12

Abstract: The present invention relates to an induction heating cooker including a synchronization circuit for a plurality of inverters, comprising: a first inverter including a first switching circuit unit for applying a first power source to a first heating coil, and a first control unit for controlling the first switching circuit unit; and a second inverter including a second switching circuit unit for applying a second power source to a second heating coil, and a second control unit for controlling the second switching circuit unit, wherein the first inverter further includes a first insulated signal transfer unit for controlling an operation of the second switching circuit unit, and the first control unit may match an operating frequency of the second switching circuit unit with an operating frequency of the first switching circuit unit by using the first insulated signal transfer unit.

公开(公告)号：US20170223780A1

公开(公告)日：2017-08-03

申请号：US15418824

申请日：2017-01-30

Applicant: LG ELECTRONICS INC.

Inventor： Jeashik HEO ,  Kyelyong KANG ,  Jinwook HAN ,  Changwoo SON

IPC: H05B6/06 ,  H05B6/12

CPC classification number: H05B6/062 ,  H05B6/1209 ,  H05B6/1272 ,  H05B2213/07 ,  Y02B40/126

Abstract: An induction cooking apparatus that includes a plate that is configured to accommodate a cooking vessel; a first coil that is located under the plate; a second coil that is located under the plate and adjacent to the first coil; and a temperature detector that is located on the plate and that includes: a resistor element having a resistance value that is changed based on a temperature of the cooking vessel that is inductively heated by the second coil is disclosed.

公开(公告)号：US20240138032A1

公开(公告)日：2024-04-25

申请号：US18276839

申请日：2022-01-21

Applicant: LG ELECTRONICS INC.

Inventor： Juyoung SIM ,  Jinwook HAN

IPC: H05B6/06 ,  H02M5/458 ,  H05B6/12

CPC classification number: H05B6/065 ,  H02M5/458 ,  H05B6/1272

Abstract: An induction heating device according to an embodiment comprises: a working coil which is disposed at a position corresponding to a heating area where an object to be heated is placed, and forms a load together with the object to be heated; a resonant capacitor which forms a resonant circuit together with the working coil; an inverter circuit which includes a plurality of switching elements and supplies a current to the working coil; a first voltage sensor which measures a voltage value applied to the resonant capacitor; a second voltage sensor which measures a supply voltage value supplied to the resonant circuit through the inverter circuit; and a controller which, when the working coil is in operation, calculates at least one of the resistance value of the load and the inductance of the load on the basis of the voltage value of the resonant capacitor and the supply voltage value.