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公开(公告)号：US10517148B2
公开(公告)日：2019-12-24
申请号：US15189375
申请日：2016-06-22
Applicant: LG ELECTRONICS INC.
Inventor： Hyunwook Moon , Byungkyu Park , Seungbok Ok
Abstract: An electronic induction heat cooking apparatus is provided. The electronic induction heat cooking apparatus includes a rectifier for rectifying an input voltage and outputting a direct current (DC) voltage, a plurality of switching elements for switching the DC voltage output through the rectifier, a cooling fan for cooling the plurality of switching elements, a plurality of heating coils for heating a cooking utensil by controlling the plurality of switching elements, and a controller for controlling the plurality of switching elements according to a plurality of operation modes. In an operation mode for generating maximum heat among the plurality of operation modes, a switching element for generating maximum heat among the plurality of switching elements is arranged closer to the cooling fan than at least one of the other switching elements.
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公开(公告)号：US10477629B2
公开(公告)日：2019-11-12
申请号：US15189342
申请日：2016-06-22
Applicant: LG ELECTRONICS INC.
Inventor： Byungkyu Park , Hyunwook Moon , Seungbok Ok , Byeongwook Park
Abstract: An electronic induction heat cooking apparatus includes a rectifier including a bridge diode, for rectifying an input voltage and outputting a direct current (DC) voltage; a plurality of switching elements for switching the DC voltage output through the rectifier; a controller for controlling the plurality of switching elements; a plurality of heating coils for heating a cooking utensil by controlling the plurality of switching elements; a heat sink having the plurality of switching elements mounted thereon, for cooling the plurality of switching elements; a cover covering the plurality of switching elements; and coupling members for coupling the heat sink to the cover. A radiation fin for cooling the plurality of switching elements is formed on the cover.
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Patent Agency Ranking
公开(公告)号：US12295085B2
公开(公告)日：2025-05-06
申请号：US16766595
申请日：2018-11-28
Applicant: LG Electronics Inc.
Inventor： Seungbok Ok , Byeong Wook Park , Jae-Woo Lee
Abstract: An induction heating device includes a working coil group including a first working coil and a second working coil that are electrically connected in parallel to each other, an inverter configured to perform a switching operation to supply resonance current to at least one of the first or second working coil; a first semiconductor switch electrically connected to the first working coil to turn on and turn off the first working coil; a second semiconductor switch electrically connected to the second working coil to turn on and turn off the second working coil; and a controller configured to control operation of the inverter and the first and second semiconductor switches, respectively. The controller turns off the inverter before turning off at least one of the first semiconductor switch or the second semiconductor switch.
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公开(公告)号：US12250759B2
公开(公告)日：2025-03-11
申请号：US17116537
申请日：2020-12-09
Applicant: LG Electronics Inc.
Inventor： Dooyong Oh , Seungbok Ok , Kyunghoon Jung , Byeongwook Park
Abstract: A cooking apparatus includes: a working coil, an inverter including a plurality of switching elements and configured to apply, by operating the plurality of switching elements, a resonant current of a predetermined frequency to the working coil, a phase detector configured to detect a phase difference between the resonant current and a voltage applied to an output terminal of the inverter, and a controller configured to calculate, based on the detected phase difference, a temperature of a target object that is placed above the working coil.
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15.发明授权公开(公告)号：US11690141B2
公开(公告)日：2023-06-27
申请号：US16956311
申请日：2018-11-28
Applicant: LG Electronics Inc.
Inventor： Dooyong Oh , Byeong Wook Park , Seungbok Ok , Jae-Woo Lee
Abstract: An induction heating device includes a working coil and a resonance capacitor, an inverter that performs a switching operation to supply a resonance current to the working coil, a plurality of snubber capacitors electrically connected to the inverter, a direct current (DC) link capacitor electrically connected to the inverter, and a relay configured to electrically connect one of the plurality of snubber capacitors to the DC link capacitor or the resonance capacitor.
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16.发明授权公开(公告)号：US11533789B2
公开(公告)日：2022-12-20
申请号：US16757718
申请日：2018-11-28
Applicant: LG Electronics Inc.
Inventor： Jae-Woo Lee , Byeong Wook Park , Dooyong Oh , Seungbok Ok
Abstract: An induction heating apparatus includes a working coil; an inverter configured to perform switching operation to thereby apply a resonance current to the working coil; and a controller configured to provide a control signal with a fixed frequency to the inverter to thereby control the switching operation. The controller changes a pulse width of the control signal based on a predetermined cycle that is set based on a temperature of the inverter.
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公开(公告)号：US10187930B2
公开(公告)日：2019-01-22
申请号：US14873735
申请日：2015-10-02
Applicant: LG ELECTRONICS INC.
Inventor： Byeongwook Park , Dooyong Oh , Hyunwook Moon , Seungbok Ok
Abstract: An induction heat cooking apparatus includes a rectifier to rectify an input voltage and to output a DC voltage; a plurality of switching devices to switch the DC voltage output from the rectifier; a plurality of heating coils to heat a cooking container according to control of the plurality of switching devices; and a controller to control the plurality switching devices to simultaneously drive two heating coils connected in parallel with each other among the plurality of heating coils.
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