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1.发明公开公开(公告)号：US20230253834A1
公开(公告)日：2023-08-10
申请号：US18127193
申请日：2023-03-28
Applicant: LG ELECTRONICS INC.
Inventor： Seungbok OK , Dooyong OH , Hyunwook MOON , Byeong Wook PARK
CPC classification number: H02J50/40 , H02J50/80 , H02J50/90 , H02J50/12 , H02J7/02 , H05B1/0266 , H05B6/065 , H05B6/44
Abstract: An induction heating and wireless power transmitting apparatus includes: a first working coil portion including first and second working coils that are connected in parallel; a first inverter configured to apply a resonant current to the first working coil and the second working coil by performing a switching operation; a first semiconductor switch connected to the first working coil and configured to turn the first working coil on or off; a second semiconduction switch connected to the second working coil and configured to turn the second working coil on or off; and a controller configured to detect whether an object is positioned above the first working coil or the second working coil based on controlling the first and second semiconductor switched and the first inverter.
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公开(公告)号：US20210136880A1
公开(公告)日：2021-05-06
申请号：US16488731
申请日：2018-02-23
Applicant: LG ELECTRONICS INC.
Inventor： Dooyong OH , Byeong Wook PARK , Seungbok OK
Abstract: The present invention relates to an induction heating cooker and, more specifically, to an induction heating cooker comprising triple heating coils which have the same center and operate by different power sources. The induction heating cooker of the present invention comprises a control unit for controlling first to third coil driving circuits so as to operate the first to third heating coils at the same frequency.
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公开(公告)号：US20190182908A1
公开(公告)日：2019-06-13
申请号：US16308170
申请日：2017-05-31
Applicant: LG Electronics Inc.
Inventor： Dooyong OH , Byeong Wook PARK
Abstract: An induction heating device includes a first coil that is wound about an axis by a first number of rotations, a second coil that is spaced apart from the first coil in a radial direction and that is disposed radially outward of the first coil, the second coil being wound about the axis by a second number of rotations, and a power supply unit configured to convert alternating current (AC) power and to supply a high-frequency AC to the first coil and to the second coil based on conversion of the AC power. The induction heating device is configured to output a maximum output level in a range from 6500 W to 7500 W based on a ratio between the first number of rotations and the second number of rotations.
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4.发明公开公开(公告)号：US20230284346A1
公开(公告)日：2023-09-07
申请号：US18196840
申请日：2023-05-12
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.
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5.发明申请公开(公告)号：US20210084721A1
公开(公告)日：2021-03-18
申请号：US16934891
申请日：2020-07-21
Applicant: LG Electronics Inc.
Inventor： Kyung Hoon JUNG , Dooyong OH , Byeong Wook PARK
Abstract: An induction heating device includes: a working coil, an inverter, a current transformer, a current detecting circuit, a voltage detecting circuit, an AND circuit, and a controller. The induction heating device may detect presence or absence of an object and a material of the object based on a magnitude of resonance current applied to the working coil and a phase difference between the resonance current and a voltage applied to a switching element of the inverter.
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Patent Agency Ranking
公开(公告)号：US20210127459A1
公开(公告)日：2021-04-29
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：US20210084722A1
公开(公告)日：2021-03-18
申请号：US17018842
申请日：2020-09-11
Applicant: LG Electronics Inc.
Inventor： Kyung Hoon JUNG , Dooyong OH , Byeong Wook PARK
Abstract: An induction heating device includes a working coil, an inverter including a first switching element and a second switching element that are configured to perform a switching operation and to apply a resonance current to the working coil, a snubber capacitor including a first snubber capacitor connected to the first switching element, and a second snubber capacitor connected to the second switching element, a phase detector configured to detect a phase difference between the resonance current applied to the working coil and a switching voltage applied to the second switching element, and a controller configured to receive, from the phase detector, phase information including the phase difference, provide the inverter with a switching signal to thereby control the switching operation, and adjust an operating frequency of the switching signal based on the phase information to thereby control an output of the working coil.
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公开(公告)号：US20210204367A1
公开(公告)日：2021-07-01
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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9.发明申请公开(公告)号：US20200337120A1
公开(公告)日：2020-10-22
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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公开(公告)号：US20200059996A1
公开(公告)日：2020-02-20
申请号：US16487611
申请日：2018-02-23
Applicant: LG ELECTRONICS INC.
Inventor： Seungbok OK , Byeong Wook PARK , Dooyong OH
Abstract: Disclosed herein is an induction-heating cooking apparatus that includes a sensing circuit for controlling an output of a heating coil, and more specifically, to an induction-heating cooking apparatus capable of enhancing accuracy in measuring electric currents of a heating coil by simply modifying a circuit. The induction-heating cooking apparatus includes a control unit calculating an output of a heating coil on the basis of electric currents measured by a sensor supplying alternating current power.
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