公开(公告)号：US12250759B2

公开(公告)日：2025-03-11

申请号：US17116537

申请日：2020-12-09

Applicant: LG Electronics Inc.

Inventor： Dooyong Oh ,  Seungbok Ok ,  Kyunghoon Jung ,  Byeongwook Park

IPC: H05B6/12 ,  G01K7/00 ,  G01R25/00 ,  H05B3/74 ,  H05B6/04

Abstract: A cooking apparatus includes: a working coil, an inverter including a plurality of switching elements and configured to apply, by operating the plurality of switching elements, a resonant current of a predetermined frequency to the working coil, a phase detector configured to detect a phase difference between the resonant current and a voltage applied to an output terminal of the inverter, and a controller configured to calculate, based on the detected phase difference, a temperature of a target object that is placed above the working coil.

公开(公告)号：US09970426B2

公开(公告)日：2018-05-15

申请号：US14867337

申请日：2015-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Gyunam Kim ,  Kyunghoon Jung ,  Jaeyoo Yoo

IPC: F04B49/06 ,  F04B51/00 ,  F04B35/04 ,  H02P25/06

CPC classification number: F04B35/04 ,  F04B35/045 ,  F04B49/06 ,  F04B49/065 ,  F04B51/00 ,  F04B2203/0401 ,  F04B2203/0402 ,  H02P25/06

Abstract: An apparatus and method for controlling a linear compressor are provided. The apparatus and method may identify a kind of motor of a linear compressor, based on an output which may be measured by applying a test signal to the linear compressor, and may control the linear compressor depending on the identified kind of motor. The apparatus and method may diagnose whether the linear compressor has broken down, and thus, the kind of motor may be autonomously identified without a separate device or a measurement operation, control suitable for a characteristic or characteristics of the motor may be accurately and efficiently controlled, and maintenance, repair, and inspection of the linear compressor may be simply and easily performed.

公开(公告)号：US10935020B2

公开(公告)日：2021-03-02

申请号：US15874116

申请日：2018-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghoon Jung ,  Gyunam Kim

IPC: F04B49/06 ,  F04B35/04 ,  H02K33/02 ,  H02K33/00

Abstract: An apparatus for linear compressor includes a drive unit configured to apply a test signal to the linear compressor, a current detection unit configured to detect a motor current of the linear compressor, a voltage detection unit configured to detect a motor voltage of the linear compressor, and a controller configured to acquire plural inductances varied according to a size of the motor current, based on a change of the motor current and the motor voltage which are acquired according as the test signal is applied.

公开(公告)号：US10927830B2

公开(公告)日：2021-02-23

申请号：US16292859

申请日：2019-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghoon Jung ,  Sungho Park

IPC: F04B49/06 ,  F04B39/12 ,  H02P27/08 ,  H02P6/20 ,  H02P23/00 ,  H02P23/06

Abstract: The present disclosure relates to a compressor control apparatus and a compressor control method thereof, and more particularly, to a compressor control apparatus for controlling a switching operation of a switching device to control the start-up of a compressor motor and a compressor control method thereof.