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公开(公告)号：US12120800B2
公开(公告)日：2024-10-15
申请号：US17271112
申请日：2019-08-30
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu Park , Gwang Rok Kim , Bada Yoon , John Kang
CPC classification number: H05B6/065 , H02M3/158 , H05B6/04 , H05B6/1272
Abstract: A method for controlling an induction heating device according to an embodiment of the present disclosure includes driving a first working coil at a first target frequency, receiving a driving command for a second working coil, stopping the driving of the first working coil and driving the second working coil at a preset first adjustment frequency, and determining a second target frequency of the second working coil corresponding to the driving command for the second working coil.
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公开(公告)号：US12144086B2
公开(公告)日：2024-11-12
申请号：US17271823
申请日：2019-08-30
Applicant: LG ELECTRONICS INC.
Inventor： Bada Yoon , Gwang Rok Kim , Wongyu Park
IPC: H05B6/06
Abstract: According to an embodiment, a method of controlling an induction heating device comprises determining a first target frequency of a first working coil corresponding to a driving command for the first working coil, determining a second target frequency of a second working coil corresponding to a driving command for the second working coil, determining a final driving frequency of the first working coil and a final driving frequency of the second working coil based on the first target frequency and the second target frequency, determining output control methods of the first working coil and the second working coil based on the first target frequency, the second target frequency, the final driving frequency of the first working coil, and the final driving frequency of the second working coil, and driving the first working coil and the second working coil at the final driving frequencies according to the output control methods.
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3.发明授权公开(公告)号：US10904953B2
公开(公告)日：2021-01-26
申请号：US16030984
申请日：2018-07-10
Applicant: LG Electronics Inc.
Inventor： Bada Yoon , John Kang , Wongyu Park
Abstract: An induction heating device includes a working coil, an inverter, an inverter driving unit configured to apply a switching signal to the inverter to enable the inverter to perform a switching operation, a control unit configured to generate and apply a control signal to the inverter driving unit to cause the inverter driving unit to generate the switching signal based on the control signal, and a determination unit configured to determine a type of an object disposed on the induction heating device based on (i) a first resonant current value measured from the working coil in response to operation of the inverter by the switching signal having a first operation frequency and (ii) a second resonant current value measured from the working coil in response to operation of the inverter by the switching signal having a second operation frequency.
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公开(公告)号：US11540360B2
公开(公告)日：2022-12-27
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.
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Patent Agency Ranking
公开(公告)号：US20220232673A1
公开(公告)日：2022-07-21
申请号：US17579761
申请日：2022-01-20
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu PARK , Bada Yoon , Sihoon JEONG
Abstract: The present disclosure relates to an induction heating apparatus and a method for controlling the same. In one embodiment, when a power level of a heating zone is input, a noise suppressing operation may be performed to suppress initial driving noise that might occur before a frequency for heating a container. A controller of the induction heating apparatus may adjust duty cycles of switching signals input to switching elements included in an inverter circuit and a driving frequency of the inverter circuit respectively and perform the noise suppressing operation. In the embodiment, when a power level of a heating zone is set and a container starts to be heated, initial driving noise may be reduced.
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公开(公告)号：US12177953B2
公开(公告)日：2024-12-24
申请号：US17271159
申请日：2019-08-30
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu Park , Gwang Rok Kim , Bada Yoon
Abstract: The method for controlling an induction heating device according to the present disclosure may include receiving a driving command for a second working coil when a first working coil is being driven at a first target frequency, stopping driving of the first working coil and driving the second working coil at a preset first adjustment frequency, determining a second target frequency of the second working coil corresponding to the driving command for the second working coil, determining a final driving frequency of the first working coil and a final driving frequency of the second working coil based on the first target frequency and the second target frequency, respectively, driving the first working coil and the second working coil simultaneously at a second adjustment frequency, and adjusting a driving frequency of the first working coil and a driving frequency of the second working coil to the final driving frequency, respectively.
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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
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
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8.发明授权公开(公告)号：US11464084B2
公开(公告)日：2022-10-04
申请号：US16344777
申请日：2017-11-01
Applicant: LG ELECTRONICS INC.
Inventor： Bada Yoon
IPC: H05B6/06 , G01R19/165 , G01R19/10
Abstract: An induction heating cooker comprises a rectifying unit for rectifying an AC voltage from a power supply to a DC voltage and first and second switching units for switching to alternately apply the DC voltage from the rectifying unit to the working coil for driving the working coil.
A device of sensing a cooking container in the induction heating cooker comprises a first current sensing unit configured to sense a first current flowing between the power supply and the rectifying unit, a second current sensing unit configured to sense a second current flowing to the working coil, and a controller configured to determine if the cooking container placed on the working coil is present based on the first and second currents.-
公开(公告)号：US20220217819A1
公开(公告)日：2022-07-07
申请号：US17569892
申请日：2022-01-06
Applicant: LG ELECTRONICS INC.
Inventor： Sihoon JEONG , Bada Yoon , Wongyu Park
Abstract: A controller of the induction heating apparatus in one embodiment may determine an overlapped period of a resonance current value of a working coil and a driving voltage value of a switching element included in an inverter circuit. The overlapped period may denote a period for which the resonance current value and the driving voltage value are all positive numbers. The controller may determine whether a driving state of the induction heating apparatus is normal or abnormal based on a time point at which the overlapped period appears. When determining that the driving state of the induction heating apparatus is abnormal, the controller may stop driving of the working coil.
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