-
公开(公告)号：US20200077471A1
公开(公告)日：2020-03-05
申请号：US16556504
申请日：2019-08-30
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu PARK , Gwangrok KIM , Bada YOON
Abstract: An induction heater device and a method for controlling an induction heating device are provided. The method may include determining a first target frequency of a first working coil corresponding to the drive command for the first working coil, determining a second target frequency of a second working coil corresponding to the drive command for the second working coil, and determining a final drive frequency of the first working coil and a final drive frequency of the second working coil based on the first target frequency and the second target frequency, respectively.
-
公开(公告)号：US20220256657A1
公开(公告)日：2022-08-11
申请号：US17667963
申请日：2022-02-09
Applicant: LG ELECTRONICS INC.
Inventor： Gwangrok KIM , Jung Youn Lee
IPC: H05B6/06 , H05B6/12 , H02M1/08 , H02M7/5387
Abstract: An induction heating apparatus may determine a required power value of a heating zone, based on a power level set for the heating zone, detect a container by using an inner working coil and an outer working coil, determine a working coil to be driven, based on results of the detection of the container, determine a driving mode of the working coil to be driven, based on the required power value, and provide a control signal, based on the driving mode.
-
公开(公告)号：US20220346196A1
公开(公告)日：2022-10-27
申请号：US17640310
申请日：2020-08-11
Inventor： Kyelyong KANG , Gwangrok KIM , JeeHoon JUNG , See Hoon JUNG , Hwa Pyeong PARK
IPC: H05B6/06 , H02M1/42 , H02M7/5387
Abstract: An induction heating apparatus according to an embodiment of the present specification comprises a main control circuit for adjusting the capacitance of the variable capacitor circuit according to a driving mode of the inverter circuit determined on the basis of a load resistance value of a container placed on the working coil and adjusting the magnitude of the direct current link voltage according to a final voltage value calculated on the basis of an equivalent resistance value of the container and the working coil and a required power value for the working coil.
-
公开(公告)号：US20220256660A1
公开(公告)日：2022-08-11
申请号：US17668032
申请日：2022-02-09
Applicant: LG ELECTRONICS INC.
Inventor： Jung Youn LEE , Gwangrok KIM
Abstract: An induction heating apparatus may include a first working coil provided in a position corresponding to a first heating region, a second working coil provided in a position corresponding to a second heating region, an inverter circuit configured to supply current for driving at least one of the first working coil or the second working coil and comprising a plurality of switching elements, and a drive circuit configured to supply a switching signal to each of the switching elements. A controller configured to determine a driving mode of the working coil when a heating start command for at least one of the first working coil or the second working coil is input, and to supply a control signal for outputting of the switching signal to the drive circuit based on the determined driving mode.
-
Patent Agency Ranking
公开(公告)号：US20220256658A1
公开(公告)日：2022-08-11
申请号：US17668001
申请日：2022-02-09
Applicant: LG ELECTRONICS INC.
Inventor： Jung Youn LEE , Gwangrok KIM
IPC: H05B6/06 , H02M1/08 , H02M7/5387 , H05B6/12
Abstract: An induction heating apparatus may include a first working coil provided in a position corresponding to a first heating region, a second working coil provided in a position corresponding to a second heating region, an inverter circuit configured to supply current for driving at least one of the first working coil or the second working coil, and a drive circuit configured to supply a switching signal to each of the switching elements. A controller may be configured to determine a driving mode of the working coil when a heating start command for at least one of the first working coil or the second working coil is input, and the controller may provide a control signal for outputting the switching signals based on the determined driving mode.
-
公开(公告)号：US20210315062A1
公开(公告)日：2021-10-07
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
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：US20230141390A1
公开(公告)日：2023-05-11
申请号：US17915065
申请日：2021-03-26
Applicant: LG ELECTRONICS INC.
Inventor： Gwangrok KIM , Ho Yong JANG , Jung Youn LEE , Seongkyu SONG
Abstract: The present disclosure relates to an induction heating device and a control method thereof. In one embodiment, at a time of a simultaneous operation of a first working coil operating at a first driving frequency and a second working coil operating at a second driving frequency, control for removing interference noise is performed based on a difference between the first driving frequency and the second driving frequency. An induction heating device of one embodiment may adjust the duty ratio of a switching signal provided to a first inverter circuit after adjusting the first driving frequency to adjust the actual output value of the first working coil to a value the same as the required output value of the first working coil.
-
公开(公告)号：US20220240354A1
公开(公告)日：2022-07-28
申请号：US17586075
申请日：2022-01-27
Applicant: LG ELECTRONICS INC.
Inventor： Gwangrok KIM , Jung Youn Lee
Abstract: A method for controlling an induction heating apparatus comprises receiving a power level for a heating region, supplying a switching signal to an inverter circuit based on a predetermined reference frequency, measuring an output current value of the inverter circuit, measuring a DC link voltage value, calculating an output power value of the working coil based on the output current value of the inverter circuit and the DC link voltage value, determining a heating frequency of the inverter circuit based the result of comparison by comparing the output power value of the working coil with a required power value, and supplying a switching signal to the inverter circuit based on the heating frequency.
-
公开(公告)号：US20180376542A1
公开(公告)日：2018-12-27
申请号：US16018158
申请日：2018-06-26
Applicant: LG ELECTRONICS INC.
Inventor： Jea Shik HEO , Gwangrok KIM , Heejun LEE
Abstract: The present disclosure relates to an induction heating device. A loaded-object sensor according to the present disclosure is arranged concentrically and centrally in the working coil. Thus, the sensing coil and the working coil are adjacent to each other. When a current for the heating operation is applied to the working coil, an induction voltage is generated in the sensing coil by magnetic force generated by the current applied to the working coil. According to the present disclosure, a limiting circuit is used to reduce the induction voltage generated in the sensing coil when the heating operation of the working coil is performed.
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.016 seconds)
