公开(公告)号：US20180376540A1

公开(公告)日：2018-12-27

申请号：US16018203

申请日：2018-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Jea Shik Heo ,  Byeong Geuk Kang ,  Ho Yong Jang

IPC: H05B6/06 ,  H05B6/12 ,  H05B1/02

Abstract: The present disclosure relates to a loaded-object sensor and an induction heating device including the loaded-object sensor. The loaded-object sensor has a cylindrical hollow body with a sensing coil wound on its outer surface. Further, a receiving space formed inside the body of the loaded-object sensor accommodates a temperature sensor. The loaded-object sensor is concentrically provided in a central region of the working coil. The sensor may measure the temperature of the loaded object while discriminating a type of the loaded object placed on a corresponding position to the working coil.

公开(公告)号：US11555867B2

公开(公告)日：2023-01-17

申请号：US16699369

申请日：2019-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Ho Yong Jang ,  Donghyun Kim ,  Sehwa Yoon

IPC: A47J27/21 ,  G01R33/07 ,  G01R33/028

Abstract: Disclosed herein is an electric pot having an improved relay installation position. The electric pot includes a pot main body that is provided with a magnetic field generator generating a magnetic field at a lower portion of the pot main body, and a supporter that includes a magnetism detection sensor detecting magnitude of a magnetic field generated by the magnetic field generator and, based on the detected magnitude of a magnetic field, generating a voltage and that includes a comparator comparing the voltage generated by the magnetism detection sensor with a predetermined reference voltage and, based on the comparison, controlling a switchover operation of a relay part, thereby controlling the relay part through a simple circuit configuration and through magnetic field generation and detection means without an additional communication means.

公开(公告)号：US20220295604A1

公开(公告)日：2022-09-15

申请号：US17693687

申请日：2022-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Kyelyong KANG ,  Ho Yong Jang

IPC: H05B6/06 ,  H05B6/36 ,  H05B6/44

Abstract: A controller may measure resonance current of a working coil, measure driving voltage of a switching element included in an inverter circuit that supplies current to the working coil, and generates a phase margin pulse based on the resonance current and the driving voltage. The controller may compare the phase margin pulse with a switching signal and determine a driving state of the induction heating apparatus, and control driving of the working coil based on the driving state of the induction heating apparatus. Additionally, when it is determined that a driving frequency of the working coil is included in a capacitive area, the induction heating apparatus stops from operating, or a driving frequency of the working coil is set again.

公开(公告)号：US11265975B2

公开(公告)日：2022-03-01

申请号：US16018225

申请日：2018-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Ho Yong Jang ,  Byeong Geuk Kang ,  Jea Shik Heo

IPC: H05B6/12 ,  H05B6/06 ,  F24C9/00

Abstract: The present disclosure relates to an induction heating device and a method for controlling the same. In accordance with the present disclosure, first, inductive sensing is periodically performed to detect a specific object with inductive heating property. Next, current sensing of the specific object having the inductive heating property is performed to again check whether the specific object has the inductive heating property. Thus, when the user simply places the loaded object on the device, the device may allow the user to quickly and intuitively confirm whether the corresponding loaded object has the inductive heating property.

公开(公告)号：US11943858B2

公开(公告)日：2024-03-26

申请号：US17218576

申请日：2021-03-31

Applicant: LG ELECTRONICS INC.

Inventor： Gwangrok Kim ,  Ho Yong Jang ,  Jung Youn Lee ,  Seongkyu Song

IPC: H05B6/06 ,  H05B6/04 ,  H05B6/36

CPC classification number: H05B6/06 ,  H05B6/04 ,  H05B6/36

Abstract: The present disclosure relates to an induction heating apparatus and a method of controlling the same. A controller of the induction heating apparatus according to the present disclosure may set an operation mode of an inverter circuit to a half bridge mode when a required power value of a working coil is set to a value less than a reference power value such that a driving frequency of the working coil decreases while an actual power value of the working coil is kept the same as the required power value. Additionally, the controller of the induction heating apparatus may adjust a duty ratio of a switching signal input to a switching element included in the inverter circuit, thereby adjusting the actual power value of the working coil.

公开(公告)号：US11478104B2

公开(公告)日：2022-10-25

申请号：US16709642

申请日：2019-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Namhun Kim ,  Ho Yong Jang

IPC: A47J27/21 ,  H05B1/02

Abstract: An electric pot may include a controller that controls a heater to perform a temperature-maintenance operation based on an input relating to a temperature-maintenance operation and based on information on temperatures. A memory may receive information in relation to a temperature-maintenance operation from the controller and may store the information and retain the stored information in relation to a temperature-maintenance operation regardless of whether a pot main body is attached to or detached from a supporter.

公开(公告)号：US20220386423A1

公开(公告)日：2022-12-01

申请号：US17752009

申请日：2022-05-24

Applicant: LG Electronics Inc.

Inventor： Sihoon Jeong ,  Ho Yong Jang ,  Bada Yoon ,  Gwangrok Kim

IPC: H05B6/06 ,  H05B6/04 ,  H05B6/44 ,  G01R19/25

Abstract: An induction heating device according to and embodiment may include a working coil; an inverter circuit comprising a plurality of switching elements and configured to supply currents to the working coil; a rectifier circuit configured to rectify the voltage supplied from an external power source; a smoothing circuit configured smooth the voltage output from the rectifier circuit; a drive circuit configured to supply a switching signal to each of the switching circuits; a controller configured to supply a control signal for outputting the switching signal to the drive circuit; a shunt resistor connected between the smoothing circuit and the inverter circuit; an input current sensing circuit configured to sense an input current value of the inverter circuit based on a current flowing through the shunt resistor; and a resonance current sensing circuit a resonance current value of the working coil based on the current flowing through the shunt resistor

公开(公告)号：US11311136B2

公开(公告)日：2022-04-26

申请号：US16704178

申请日：2019-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Ho Yong Jang ,  Donghyun Kim ,  Sehwa Yoon

IPC: A47J27/21

Abstract: An electric pot may have an improved relay installation position. The electric pot may include a supporter and a pot main body provided with a heater driven to provide heat through an electric connection with connection terminals. The supporter may include a relay part that optionally switches between a connection of the power supply to a third connection terminal and a disconnection of the power supply to the third connection terminal.

公开(公告)号：US11202345B2

公开(公告)日：2021-12-14

申请号：US16018203

申请日：2018-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Jea Shik Heo ,  Byeong Geuk Kang ,  Ho Yong Jang

IPC: H05B6/06 ,  H05B1/02 ,  H05B6/12

Abstract: The present disclosure relates to a loaded-object sensor and an induction heating device including the loaded-object sensor. The loaded-object sensor has a cylindrical hollow body with a sensing coil wound on its outer surface. Further, a receiving space formed inside the body of the loaded-object sensor accommodates a temperature sensor. The loaded-object sensor is concentrically provided in a central region of the working coil. The sensor may measure the temperature of the loaded object while discriminating a type of the loaded object placed on a corresponding position to the working coil.