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公开(公告)号：US11979963B2
公开(公告)日：2024-05-07
申请号：US16487611
申请日：2018-02-23
Applicant: LG ELECTRONICS INC.
Inventor： Seungbok Ok , Byeong Wook Park , Dooyong Oh
CPC classification number: H05B6/065 , H05B1/0266
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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2.发明授权公开(公告)号：US11690142B2
公开(公告)日：2023-06-27
申请号：US16934891
申请日：2020-07-21
Applicant: LG Electronics Inc.
Inventor： Kyung Hoon Jung , Dooyong Oh , Byeong Wook Park
CPC classification number: H05B6/06 , H05B6/36 , H05B2213/05
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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公开(公告)号：US11528783B2
公开(公告)日：2022-12-13
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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4.发明授权公开(公告)号：US11419188B2
公开(公告)日：2022-08-16
申请号：US16643474
申请日：2018-08-13
Applicant: LG Electronics Inc.
Inventor： Seungbok Ok , Dooyong Oh , Hyunwook Moon , Byeong Wook Park
Abstract: An induction heating and wireless power transmitting apparatus includes a first group of working coils including a first working coil and a second working coil connected to each other in parallel, a first inverter that supplies resonant currents to at least one of the first working coil or the second working coil by performing a switching operation, a first semiconductor switch connected to the first working coil configured to turn on and turn off the first working coil, a second semiconductor switch connected to the second working coil and configured to turn on and turn off the second working coil, an auxiliary power supply configured to supply power to the first semiconductor switch and the second semiconductor switch, and a controller that controls the first inverter, the first semiconductor switch, and the second semiconductor switches.
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公开(公告)号：US10681780B2
公开(公告)日：2020-06-09
申请号：US15189536
申请日：2016-06-22
Applicant: LG ELECTRONICS INC.
Inventor： Dooyong Oh , Hyunwook Moon , Seungbok Ok , Byeongwook Park
Abstract: An 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 plurality of heating coils for heating a cooking utensil by controlling the plurality of switching elements; a controller for controlling the plurality of switching elements according to a plurality of operation modes; and a supporting member in which at least one of the plurality of heating coils is mounted. The supporting member includes a coil insertion part, into which the heating coils are inserted, and the magnetic member is inserted into the supporting member to directly face the heating coils at the lower side of the heating coils.
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Patent Agency Ranking
公开(公告)号：US10667333B2
公开(公告)日：2020-05-26
申请号：US15189566
申请日：2016-06-22
Applicant: LG ELECTRONICS INC.
Inventor： Dooyong Oh , Hyunwook Moon , Seungbok Ok , Byeongwook Park
Abstract: An 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 plurality of heating coils for heating a cooking utensil by controlling the plurality of switching elements, a controller for controlling the plurality of switching elements, and a support member including grooves, into which the heating coils are inserted. A width of a cross section of each of the grooves decreases toward an entrance of each of the grooves.
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公开(公告)号：US10582574B2
公开(公告)日：2020-03-03
申请号：US15048371
申请日：2016-02-19
Applicant: LG ELECTRONICS INC.
Inventor： Seungbok Ok , Dooyong Oh , Oksun Yu , Hyunwook Moon
Abstract: An induction heat cooking apparatus includes a rectifier to rectify an input voltage and to output a DC voltage; a plurality of switching elements to switch the DC voltage output from the rectifier; a plurality of heating coils to heat a cooking container according to an operation of the plurality of switching elements; and a control part to control the plurality of switching elements, wherein the control part controls a time at which a switching element between a heating coil which is operated and a heating coil which is not operated among the plurality of heating coils is opened to be earlier than that of another switching element, such that power is not applied to the heating coil which is not operated.
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公开(公告)号：US09801237B2
公开(公告)日：2017-10-24
申请号：US14010570
申请日：2013-08-27
Applicant: LG ELECTRONICS INC.
Inventor： Dooyong Oh , Heesuk Roh , Byeongwook Park
CPC classification number: H05B6/065
Abstract: An electronic induction heating cooker is provided. The electronic induction heating cooker may include a rectifier that rectifies an input voltage into a direct current (DC) voltage and output the DC voltage, an inverter including first, second and third switches connected in series between a positive power source terminal and a negative power source terminal to generate an alternating current (AC) voltage by switching the DC voltage, a first heater driven by the AC voltage so as to heat a first cooking container, a second heater connected in parallel to the first heater and driven by the AC voltage so as to heat a second cooking container, and a switching controller that generates a switching signal for controlling the first and second heaters in accordance with a set of operating conditions input thereto and adjusts a duty cycle of the switching signal.
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9.发明授权Induction heat cooking apparatus and method for controlling output level thereof 有权感应加热烹调器及其输出电平的控制方法公开(公告)号：US09572201B2
公开(公告)日：2017-02-14
申请号：US14145428
申请日：2013-12-31
Applicant: LG ELECTRONICS INC.
Inventor： Dooyong Oh , Heesuk Roh , Byeongwook Park
CPC classification number: H05B6/065
Abstract: Provided is an induction heat cooking apparatus. The induction heat cooking apparatus includes a rectifying part rectifying an input voltage to output a DC voltage, an inverter switching the DC voltage outputted through the rectifying part to generate an AC voltage, a first heating part operated by the AC voltage applied from the inverter, a second heating part connected to the first heating part in parallel, the second heating part being operated by the AC voltage applied from the inverter, and a switching signal generation part controlling an operation state of each of the first and second heating parts from the inverter according to an operation mode inputted from the outside. The switching signal generation part includes an inverter driver including a bootstrap circuit.
Abstract translation: 提供一种感应加热烹调设备。 感应加热烹调设备包括整流输入电压的整流部分以输出直流电压，逆变器切换通过整流部分输出的直流电压以产生交流电压，第一加热部分由逆变器施加的交流电压操作， 第二加热部并联连接到第一加热部，第二加热部由从逆变器施加的交流电压进行动作;切换信号生成部，控制来自逆变器的第一加热部和第二加热部的运转状态 根据从外部输入的操作模式。 切换信号生成部包括具有自举电路的逆变器驱动器。
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10.发明授权Induction heat cooking apparatus and method for controlling output level thereof 有权感应加热烹调器及其输出电平的控制方法公开(公告)号：US09544946B2
公开(公告)日：2017-01-10
申请号：US14145357
申请日：2013-12-31
Applicant: LG ELECTRONICS INC.
Inventor： Dooyong Oh , Heesuk Roh , Byeongwook Park
CPC classification number: H05B6/062 , H05B2213/05
Abstract: Provided is an induction heat cooking apparatus. The induction heat cooking apparatus includes a rectifying part rectifying an input voltage to output a DC voltage; an inverter switching the DC voltage outputted through the rectifying part to generate an AC voltage; a first heating part operated by the AC voltage applied from the inverter; a second heating part connected to the first heating part in parallel, the second heating part being operated by the AC voltage applied from the inverter; and a switching signal generation part controlling an operation state of each of the first and second heating parts from the inverter according to an operation mode inputted from the outside. The switching signal generation part includes a pulse transformer.
Abstract translation: 提供一种感应加热烹调设备。 感应加热烹调设备包括整流部分，对输入电压进行整流以输出DC电压; 逆变器切换通过整流部输出的直流电压，生成交流电压; 由逆变器施加的交流电压操作的第一加热部; 第二加热部并联连接到第一加热部，第二加热部由从逆变器施加的AC电压进行动作; 以及切换信号生成部，根据从外部输入的操作模式，从逆变器控制第一加热部和第二加热部各自的动作状态。 开关信号生成部包括脉冲变压器。
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