公开(公告)号：US20210359506A1

公开(公告)日：2021-11-18

申请号：US17286150

申请日：2019-10-11

Applicant: LG ELECTRONICS INC.

Inventor： Bong Jin CHO

IPC: H02H5/04 ,  H02H1/00

Abstract: The present disclosure is directed to an apparatus for controlling temperature of component of power source separation circuit in which a temperature detection circuit may be implemented in a circuit that uses a power source different from a power source used by the control microcomputer, may directly measure a temperature of a circuit component, and may deliver a protective signal to the control microcomputer using a comparator and an insulating phototransistor, thereby implementing a protective operation.

公开(公告)号：US20220039217A1

公开(公告)日：2022-02-03

申请号：US17500342

申请日：2021-10-13

Applicant: LG ELECTRONICS INC.

Inventor： Kyungsoo HWANGBO ,  Bong Jin CHO

IPC: H05B6/12 ,  H05B6/06

Abstract: An induction heating device and a method for sensing a cooking vessel on an induction heating device are provided. The induction heating device may include a controller that converts a resonance waveform generated as current is applied to a sensing coil into a square waveform. The controller may determine whether a cooking vessel placed on the induction heating device has an inductive heating property based on a number of pulses of the converted square waveform.

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.