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41.发明申请公开(公告)号：US20200158905A1
公开(公告)日：2020-05-21
申请号：US16687940
申请日：2019-11-19
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Jaekyung YANG , Yongsoo LEE
Abstract: A method controls an induction heating device that is configured to operate based on a multi-phase power supply and that includes a working coil configured to heat an object and a controller configured to detect the object. The method includes: receiving voltage information related to a first input voltage and a second input voltage that are supplied by the multi-phase power supply and that have different phases from each other; selecting a reference voltage among the first input voltage and the second input voltage based on the voltage information; determining a detection time point, which corresponds to a time instant at which a detection operation is to be performed for detecting the object on the working coil, based on the reference voltage; and performing the detection operation at the detection time point.
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公开(公告)号：US20200146498A1
公开(公告)日：2020-05-14
申请号：US16614320
申请日：2018-05-16
Applicant: LG Electronics Inc.
Inventor： Hakjoo LIM , Jaekyung YANG , Soochan LEE , Yongsoo LEE
Abstract: A cooking appliance according to an embodiment of the present invention may comprise: a case in which a cooking chamber is formed; a door for opening or closing the front opening of the case; a steam generating device mounted to the outer surface of the case; and a steam supply tube for connecting the steam generating device to the cooking chamber, wherein the steam generating device includes: a housing fixed to the case; a drawer which can be pushed into and pulled out of the housing and is filled with water for steam generation; and an induction unit installed at the bottom of the housing so as to heat water filled in the drawer by using electromagnetic induction.
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公开(公告)号：US20190327979A1
公开(公告)日：2019-10-31
申请号：US16354734
申请日：2019-03-15
Applicant: LG ELECTRONICS INC.
Inventor： Haksoon YANG , Jaekyung YANG , Yongsoo LEE , Yonghyun LEE , Yoojin JUNG
Abstract: A cooking appliance includes a frame that defines a cooking chamber, a steam generator coupled to the frame and configured to generate steam, and a steam supply port that is connected to the steam generator, that extends through a sidewall of the frame to the cooking chamber, and that is configured to guide steam from the steam generator to the cooking chamber. The steam supply port includes a first pipe having a first diameter, a second pipe located inside of the cooking chamber, the second pipe having a second diameter that is less than the first diameter, and a connection pipe configured to connect the first pipe to the second pipe.
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公开(公告)号：US20190327794A1
公开(公告)日：2019-10-24
申请号：US16196559
申请日：2018-11-20
Applicant: LG Electronics Inc.
Inventor： Younghwan KWACK , Seongho SON , Jaekyung YANG , Yongsoo LEE
Abstract: An induction heating device includes: a working coil set including a first working coil connected to a first resonant capacitor and a second working coil connected to a second resonant capacitor; an inverter that performs a switching operation to apply a resonant current to at least one of the first or second working coil; a current transformer that adjusts a magnitude of the resonant current and that transmits the resonant current having the adjusted magnitude to the working coil set; a first relay that selectively connects a first end of the second working coil to the current transformer or the second resonant capacitor; a second relay that selectively connects a to second end of the second working coil to an end of the first working coil or the second resonant capacitor; and a control unit configured to control operations of the inverter and the first and second relays, respectively.
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公开(公告)号：US20190307281A1
公开(公告)日：2019-10-10
申请号：US16269170
申请日：2019-02-06
Applicant: LG Electronics Inc.
Inventor： Yoojin JUNG , Hoonseob SIM , Jaekyung YANG , Yongsoo LEE , Hakjoo LIM
Abstract: A cooking appliance includes a main body that defines a cooking chamber, a steam generator comprising a steam heater that is configured to heat food in the cooking chamber by generating steam, a lower heater located vertically below a bottom wall of the cooking chamber and configured to heat food in the cooking chamber, and a controller configured to control the steam heater and the lower heater. The controller is configured to: based on selection of a steam cooking mode, operate the steam heater to generate steam; and turn on the lower heater in a state in which steam cooking is performed.
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Patent Agency Ranking
公开(公告)号：US20190306929A1
公开(公告)日：2019-10-03
申请号：US16198168
申请日：2018-11-21
Applicant: LG Electronics Inc.
Inventor： Seongjun KIM , Seongho SON , Jaekyung YANG , Yongsoo LEE
Abstract: An induction heating device includes: a working coil that includes an annularly-coiled conductive wire and that defines an annular coil hole at a central region of the working coil; a ferrite core that is located vertically below the working coil and that defines a core hole at a central region of the ferrite core corresponding to the annular coil hole; and an indicator board support that is located vertically below the ferrite core. The indicator board support includes a hook that extends to the core hole in a vertical direction and that is configured to insert into the core hole.
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公开(公告)号：US20240430994A1
公开(公告)日：2024-12-26
申请号：US18828088
申请日：2024-09-09
Applicant: LG Electronics Inc.
Inventor： Seongjun KIM , Yongsoo LEE
Abstract: An induction heating device includes a case, a working coil, a base plate that is disposed vertically below the working coil, an indicator substrate support that is coupled to the case and that is disposed vertically below the base plate, an indicator substrate that is disposed on an upper surface of the indicator substrate support, that is disposed vertically below the base plate, and that is spaced apart from the base plate, an inverter substrate that is disposed at a lower surface of the indicator substrate support and that includes an inverter configured to apply a resonance current to the working coil through a switching operation, and a resonance substrate that is disposed at the lower surface of the indicator substrate support, that is connected to the working coil, and that includes a resonance capacitor configured to generate the resonance current based on the switching operation of the inverter.
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公开(公告)号：US20240306269A1
公开(公告)日：2024-09-12
申请号：US18288898
申请日：2021-07-13
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho SON , Yongsoo LEE , Jaekyung YANG
CPC classification number: H05B6/065 , H05B6/1272 , H05B2213/05
Abstract: An induction heating type cooktop can include an upper plate configured to support an object to be heated, an intermediate heating element overlapping with the upper plate, a first working coil and a second working coil configured to generate magnetic fields that pass through at least one of the object or the intermediate heating element, and an inverter configured to control a first direction of first current flowing through the first working coil and a second direction of second current flowing through the second working coil. Also, an area of a loop generated by current induced in the intermediate heating element varies according to a type of the object.
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公开(公告)号：US20240188195A1
公开(公告)日：2024-06-06
申请号：US18441580
申请日：2024-02-14
Inventor： Younghwan KWACK , Jaekyung YANG , Seongho SON , Yongsoo LEE , Jeehoon JUNG , Hwapyeong PARK , Mina KIM
CPC classification number: H05B6/065 , F24C15/106 , H02M3/06 , H02M7/103 , H05B1/0202 , H05B6/062 , H05B6/1236 , Y02B40/00
Abstract: An induction heat cooking apparatus that includes: a rectifier that is configured to convert alternating current (AC) voltage supplied from an external power source into direct current (DC) voltage; an inverter that is configured to generate current based on DC voltage received from the rectifier and provide the current to output nodes; heating coils that are configured to, based on the current generated by the inverter, generate magnetic fields for providing heat; a first capacitive unit that includes one or more resonance capacitors and that is coupled between the output nodes; a second capacitive unit that includes one or more wireless power transfer (WPT) capacitors and that is configured to be coupled between the output nodes; and a mode conversion switch that is configured to couple the second capacitive unit to the first capacitive unit in parallel is disclosed.
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公开(公告)号：US20240080947A1
公开(公告)日：2024-03-07
申请号：US18507744
申请日：2023-11-13
Applicant: LG Electronics Inc.
Inventor： Juwon KIM , Eunjin JANG , Jongwon HWANG , Yongsoo LEE , Hyunwoo JUN , Jaekyung YANG
CPC classification number: H05B6/062 , H05B6/04 , H05B6/1263 , H05B2206/022
Abstract: An induction heating type cooktop includes: a case, a cover plate that is coupled to an upper end of the case and that includes an upper plate arranged to receive a target object, a working coil that is disposed in the case and that is configured to heat the target object, a thermal insulation material disposed on the working coil, and a heating thin film coating that is disposed on a surface of the upper plate of the cover plate or a surface of the thermal insulation material and that has a stacked structure in which an adhesive layer and a heating layer are consecutively stacked.
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