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公开(公告)号：US11470694B2
公开(公告)日：2022-10-11
申请号：US16390665
申请日：2019-04-22
Applicant: LG Electronics Inc.
Inventor： Younghwan Kwack , Kyelyong Kang , Seongho Son , Seonho Jeon
Abstract: An induction heating device includes an induction heating circuit, a sensor configured to measure current applied to the induction heating circuit, and a controller. The controller includes: a switch driving unit configured to control operation of an inverter unit and to allow a resonance of the current, a container sensing unit, and a control unit. The container sensing unit is configured to: convert a first current value before the resonance into a first voltage value; control the switch driving unit to charge a working coil; compare the first voltage value with a resonance reference value; convert a second current value after the resonance into a second voltage value; generate one or more output pulses; and compare the second voltage value with a count reference value. The control unit is configured to determine whether an object is present on the working coil based on the one or more output pulses.
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公开(公告)号：US09252668B2
公开(公告)日：2016-02-02
申请号：US13691409
申请日：2012-11-30
Applicant: LG Electronics Inc.
Inventor： Jinseok Hu , Kyelyong Kang , Shinhyun Park , Gunil Park , Buhwan Ahn , Jaemin Kim
CPC classification number: H02M3/24 , H02M3/33523 , H02M2001/0032 , Y02B70/1433 , Y02B70/16
Abstract: A switching mode power supply apparatus is provided. The switching mode power supply apparatus may include a switch unit configured to switch an input voltage to a transformer and a controller configured to select an operation mode having a switching frequency according to a size of a load applied to a secondary side of the transformer and control a switching operation of the switch unit. The switching mode power supply apparatus may include a transformer. A refrigerator having the switching mode power supply apparatus is also provided.
Abstract translation: 提供了开关模式电源装置。 开关模式电源装置可以包括：开关单元，被配置为将输入电压切换到变压器;以及控制器，被配置为根据施加到变压器的次级侧的负载的大小来选择具有开关频率的操作模式，并且控制 开关单元的切换操作。 开关模式电源装置可以包括变压器。 还提供了具有开关模式电源装置的冰箱。
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公开(公告)号：US12028954B2
公开(公告)日：2024-07-02
申请号：US17313354
申请日：2021-05-06
Inventor： Sihoon Jeong , Kyelyong Kang , Jinwook Han , Hwa Pyeong Park , Jee Hoon Jung
IPC: H05B6/06 , H02M7/5387 , H05B6/12 , H02M5/458
CPC classification number: H05B6/062 , H02M7/53871 , H05B6/12 , H02M5/4585 , H05B2213/05
Abstract: An induction heating apparatus according to one embodiment may confirm a feature of a container and determine an operation mode based on the feature of the container before performing an operation of heating the container. In one embodiment, the operation mode of the induction heating apparatus may be determined as any one of a frequency doubler mode, a half bridge mode, and a full bridge mode. In one embodiment, a power control mode of the induction heating apparatus may be determined based on an operation mode of the induction heating apparatus. In one embodiment, the power control mode of the induction heating apparatus may be determined as any one of an asymmetric pulse width modulation (APWM) mode and a phase shift mode.
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公开(公告)号：US11072539B2
公开(公告)日：2021-07-27
申请号：US16230867
申请日：2018-12-21
Applicant: LG Electronics Inc.
Inventor： Heejun Lee , Kyelyong Kang
IPC: C02F1/00 , B01D35/147 , B01D35/157 , B01D35/18 , C02F9/00
Abstract: A water purifier includes a water supply tube into which water is introduced, a filter member purifying water passing through the water supply tube, a water discharge tube supplying water to the outside of the water purifier, a hot water tube branched from the water discharge tube, a hot water module including a hot water tank provided on the hot water tube to accommodate purified water and a heat generation unit heating the water accommodated in the hot water tank, a controller spaced apart from the hot water tank or the heat generation unit to control the heat generation unit, and a water discharge nozzle supplying the water passing through the water discharge tube and the hot water tube to the outside of the water purifier. At least a portion of the hot water tube or the water discharge tube passes through the controller and is heat-exchanged with the controller.
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公开(公告)号：US20210105871A1
公开(公告)日：2021-04-08
申请号：US17063399
申请日：2020-10-05
Applicant: LG ELECTRONICS INC.
Inventor： Hanna KIM , Kyelyong Kang
Abstract: A method for controlling an induction heating device includes acquiring a temperature value of a high-power working coil, when an absolute value of a difference between a first final driving frequency of a first working coil and a second final driving frequency of a second working coil is equal to or greater than a predetermined noise avoidance value and when a final driving frequency of a low-power working coil differs from a target frequency of the low-power working coil, determining whether the temperature value satisfies a predetermined output change condition, setting a required power value of the high-power working coil to a predetermined minimum power value when the temperature value satisfies the output change condition, and determining the first final driving frequency of the first working coil and the second final driving frequency of the second working coil again.
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Patent Agency Ranking
公开(公告)号：US12016102B2
公开(公告)日：2024-06-18
申请号：US16533460
申请日：2019-08-06
Applicant: LG ELECTRONICS INC.
Inventor： Hanna Kim , Kyelyong Kang
CPC classification number: H05B6/065 , H05B6/1209 , H05B6/44
Abstract: Disclosed herein is an induction heating device capable of reducing interference noise. The induction heating device includes a first power module supplying power for driving to at least one of a first working coil and an inner coil, a second power module supplying power for driving to at least one of a second working coil and an outer coil, and a control unit controlling supply of power by the first power module and the second power module. In an embodiment, the control unit may cut off supply of power to the outer coil when an instruction for heating to at least one of a first heating area and a second heating area, and an instruction for heating to a third heating area are input.
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公开(公告)号：US11882640B2
公开(公告)日：2024-01-23
申请号：US17313427
申请日：2021-05-06
Applicant: LG ELECTRONICS INC.
Inventor： Sihoon Jeong , Kyelyong Kang , Hanna Kim
Abstract: An induction heating apparatus is configured to determine a third driving frequency corresponding to a third required power value when the required power value of the first working coil or the second working coil is changed to the third required power value, to calculate a difference value between the driving frequency of the working coil (the required power value of which is not changed) and the third driving frequency, to change an operation mode or a power control mode of the first inverter circuit or the second inverter circuit when the difference value is included in a predetermined first reference range, and to change an output power value of the working coil (the required power value of which is changed) to the third required power value.
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公开(公告)号：US20210352775A1
公开(公告)日：2021-11-11
申请号：US17313500
申请日：2021-05-06
Applicant: LG ELECTRONICS INC.
Inventor： Sihoon SEONG , Kyelyong Kang , Hanna Kim
IPC: H05B6/06 , H05B6/08 , H05B6/12 , H02M7/5387
Abstract: An induction heating apparatus may include first/second working coils, first/second inverter circuits and a controller. When a user changes a required power value of a first working coil or a second working coil to a third required power value, a controller determines a third driving frequency corresponding to the third required power value. The controller according to one embodiment calculates a difference value between a driving frequency of the working coil, the required power value of which is not changed, and the third driving frequency, and compares the calculated difference value with a predetermined first reference range. When the calculated difference value is included in the first reference range, the controller changes an operation mode of a first inverter circuit from a full bridge mode to a frequency doubler mode, and changes an output power value of the working coil the required power value of which is changed to the third required power value.
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公开(公告)号：US20230217554A1
公开(公告)日：2023-07-06
申请号：US18092618
申请日：2023-01-03
Applicant: LG Electronics Inc.
Inventor： Sihoon JEONG , John Kang , Hoseop Ahn , Kyelyong Kang
CPC classification number: H05B6/062 , H05B6/1209
Abstract: An induction heating device according to an embodiment includes a rectifying circuit configured to rectify an AC voltage supplied from a power supply, a smoothing circuit configured to smooth a voltage output from the rectifying circuit, an inverter comprising a plurality of switches and configured to supply current to a working coil, a shunt resistor coupled between the smoothing circuit and the inverter, a drive circuit configured to supply switching signals to the plurality of switches provided in the inverter, respectively, and a controller configured to determine a driving frequency of the inverter and drive the working coil by supplying a control signal based on the driving frequency to the driving circuit.
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公开(公告)号：US20220264707A1
公开(公告)日：2022-08-18
申请号：US17674062
申请日：2022-02-17
Inventor： Mina KIM , Kyelyong Kang , Jinwook Han , Sihoon Jeong , Jee Hoon Jung
Abstract: An induction heating apparatus may receive a power level input for a heating area, determine a required power value corresponding to the power level, determine a heating frequency corresponding to the required power value, and set a driving frequency of the working coil to an initial frequency determined based on the heating frequency and then drive the working coil. The driving frequency may be changed from a current driving frequency to a target frequency based on a predetermined frequency change cycle.
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