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

IPC: H05B6/06 ,  H05B6/12

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.

公开(公告)号：US20200053838A1

公开(公告)日：2020-02-13

申请号：US16533460

申请日：2019-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Hanna KIM ,  Kyelyong KANG

IPC: H05B6/06 ,  H05B6/44 ,  H05B6/12

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.

公开(公告)号：US20190268979A1

公开(公告)日：2019-08-29

申请号：US16263109

申请日：2019-01-31

Applicant: LG ELECTRONICS INC.

Inventor： Hanna KIM ,  Shinjae Jeong

IPC: H05B6/12 ,  H05B6/06

Abstract: An induction heating device capable of preventing a fuse breaking phenomenon that occurs when a user preheats an empty vessel by determining whether or not a load is present in the vessel, and a method for controlling an induction heating device. In order to prevent a rapid rise in temperature of a vessel occurring in process during which a user preheats an empty vessel using an induction heating device and a fuse breaking phenomenon resulting therefrom, a controller of the induction heating device may determine whether or not a vessel placed on a working coil is an empty vessel in a vessel heating process, that is, whether or not a load is present in the vessel.