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公开(公告)号：US20210337636A1
公开(公告)日：2021-10-28
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：US20220322499A1
公开(公告)日：2022-10-06
申请号：US17667904
申请日：2022-02-09
Applicant: LG ELECTRONICS INC.
Inventor： Bada YOON , John KANG , Wongyu PARK
Abstract: An induction heating apparatus according to one embodiment comprises a working coil disposed in a position corresponding to a heating zone, an inverter circuit that comprises a plurality of switching elements and supplies current to the working coil, a driving circuit that supplies a switching signal to each of the switching elements included in the inverter circuit, a current sensor that measures a resonance current value, magnitude of resonance current flowing in the working coil, and a controller that supplies a control signal for adjusting a duty ratio and a frequency of the switching signal to the driving circuit, to drive the working coil.
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公开(公告)号：US20210204368A1
公开(公告)日：2021-07-01
申请号：US17271863
申请日：2019-08-30
Applicant: LG ELECTRONICS INC.
Inventor： Gwang Rok KIM , Wongyu PARK , Bada YOON
Abstract: The disclosure relates to an induction heating device and a method of controlling the induction heating device. The induction heating device includes a first working coil and a second working coil. According to an embodiment of the disclosure, a driving start time of the first working coil and a driving start time of the second working coil are determined based on a driving scheme of the first working coil, a driving scheme of the second working coil, and a predetermined driving period. According to an embodiment of the disclosure, an eccentricity determination period of the first working coil and an eccentricity determination period of the second working coil are determined based on the driving scheme of the first working coil, the driving scheme of the second working coil, the driving period, a duty cycle of the first working coil, and a duty cycle of the second working coil.
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公开(公告)号：US20230103228A1
公开(公告)日：2023-03-30
申请号：US17908962
申请日：2021-02-23
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu PARK , Bada YOON , John KANG
Abstract: The present disclosure relates to an induction heating device and a control method thereof. An induction heating device of one embodiment may comprise: an inverter circuit supplying electric currents to a working coil; a driving circuit supplying a switching signal to the inverter circuit, based on a control signal; an output detector detecting an output of the working coil; and a controller setting on-time of the working coil based on a current output of the working coil and controlling the output of the working coil, in a low-level operation in which a target output is equal to or less than a predetermined value.
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公开(公告)号：US20210329747A1
公开(公告)日：2021-10-21
申请号：US17271112
申请日：2019-08-30
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu PARK , Gwang Rok KIM , Bada YOON , John KANG
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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Patent Agency Ranking
公开(公告)号：US20210321494A1
公开(公告)日：2021-10-14
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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公开(公告)号：US20220235993A1
公开(公告)日：2022-07-28
申请号：US17586007
申请日：2022-01-27
Applicant: LG ELECTRONICS INC.
Inventor： Wongyu PARK , Bada YOON , Kyelyong KANG
Abstract: A refrigerator is proposed. Due to a first heater provided in a damper assembly, a damper assembly or the connection portion of the damper assembly with a supply duct is prevented from freezing, and due to a second heater provided in the supply duct, the connection portion of the supply duct with the damper assembly or the inside of the supply duct is prevented from freezing.
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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：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.
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10.发明申请公开(公告)号：US20190141793A1
公开(公告)日：2019-05-09
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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