-
1.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.
-
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.
-
3.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.
-
公开(公告)号：US11445578B2
公开(公告)日：2022-09-13
申请号：US16598642
申请日：2019-10-10
Applicant: LG Electronics Inc.
Inventor： Seungbok Ok , Wongyu Park , Byeong Wook Park
Abstract: An induction heating device includes a case, a working coil, a cover plate, a luminous element, a light guide disposed around the working coil, an input interface that is flush with an upper surface of the cover plate, a first controller configured to control driving of the working coil and the luminous element and to detect a position of one or more objects disposed on the upper surface and an arrangement sequence of the one or more objects placed on the upper surface, and a second controller configured to receive, from the first controller, information on the position and the arrangement sequence of the one or more objects, and control the input interface to display an image corresponding to a heating zone for the one or more objects based on the information on the position and the arrangement sequence of the one or more objects.
-
Patent Agency Ranking
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.
-
公开(公告)号：US11166347B2
公开(公告)日：2021-11-02
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.
-
7.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.
-
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.
-
公开(公告)号：US11533787B2
公开(公告)日：2022-12-20
申请号：US16145298
申请日：2018-09-28
Applicant: LG Electronics Inc.
Inventor： Hyunwook Moon , Eui Sung Kim , Byeong Wook Park
Abstract: An induction heating and wireless power transferring device that includes: a first working coil and a second working coil that are coupled in parallel; a rectification unit configured to rectify alternating current (AC) power to direct current (DC) power; a first inverter unit configured to convert the DC power into resonant current, and apply the converted resonant current to the first working coil or the second working coil; a first switch coupled to the first working coil and configured to turn on or off the first working coil; a second switch coupled to the second working coil and configured to turn on or off the second working coil; and a control unit configured to control the first inverter unit, the first switch, or the second switch to detect whether a target object is located on the first working coil or the second working coil.
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.015 seconds)
