公开(公告)号：US20240295067A1

公开(公告)日：2024-09-05

申请号：US18573150

申请日：2022-06-21

Applicant: LG Electronics Inc.

Inventor： Woonje CHOE ,  Chungill LEE ,  Nagyoung LEE

IPC: D06F58/38 ,  D06F103/04 ,  D06F103/08

CPC classification number: D06F58/38 ,  D06F2103/04 ,  D06F2103/08

Abstract: The present application relates to a control method for a clothes treatment apparatus, comprising: a laundry amount sensing step of determining the amount of clothes stored in a drum; a setting step of setting, as a reference rotation number, the number of rotations that causes a centrifugal force of less than 1 G to the clothes according to the amount of clothes; an air supply step of supplying, by a drying unit, heated air to the drum; and a first motion execution step of rotating the drum at the reference rotation number, a first rotation number set to be higher than the reference rotation number, and a second rotation number set to be lower than the reference rotation number.

公开(公告)号：US20210277563A1

公开(公告)日：2021-09-09

申请号：US17258289

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Junsung KIM ,  Sungwan KIM ,  Chungill LEE

IPC: D06F33/42 ,  D06F34/14 ,  D06F39/08 ,  D06F34/10

Abstract: The present disclosure relates to a laundry treatment machine. A laundry treatment machine according to an embodiment of the present disclosure including an inverter to convert the DC voltage from the converter into an alternating current (AC) voltage based on a switching operation and to output the converted AC voltage to the drain motor; and a controller to control the drain motor to operate at any one of a first speed, a second speed less than the first speed, and a stop when the washing tub motor is accelerated. Accordingly, according to the operation of the washing tub motor, it is possible to efficiently drive the drain motor.

公开(公告)号：US20210317834A1

公开(公告)日：2021-10-14

申请号：US17259603

申请日：2019-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Chungill LEE ,  Jinseong HWANG ,  Kiwook LEE ,  Jeongkeun CHOI

IPC: F04D25/06 ,  D06F39/08 ,  F04D29/22

Abstract: The present disclosure relates to a drain pump driving apparatus and a laundry treatment machine including the same. A drain pump driving apparatus according to an embodiment of the present disclosure and a laundry treatment machine including the same include: an inverter to convert an input direct current (DC) voltage into an alternating current (AC) voltage by a switching operation and to output the converted AC voltage to a drain motor; an output current detector to detect an output current flowing in the drain motor; and a controller to control the drain motor to rotate in a first direction during a first period, rotate in a second direction opposite to the first direction during a second period, and continuously rotate in the first direction when a level of the output current at rotation in the first direction is greater than a level of the output current at rotation in the second direction. Accordingly, it is possible to secure a pumping performance of the drain pump.

公开(公告)号：US20170047876A1

公开(公告)日：2017-02-16

申请号：US15232862

申请日：2016-08-10

Applicant: LG ELECTRONICS INC. ,  Research Cooperation Foundation of Yeungnam University

Inventor： Soongkeun LEE ,  Chungill LEE ,  Seonwook PARK ,  Sungwoo BAE ,  Jaejung YUN ,  Jeongtae KIM ,  Younggeun LEE

IPC: H02P21/18 ,  H02P27/06 ,  H02P6/20

CPC classification number: H02P21/18 ,  H02J50/10 ,  H02J50/80 ,  H02P6/20 ,  H02P27/06

Abstract: A motor driving apparatus included in a home appliance may include an inverter to convert a direct current (DC) power into an alternating current (AC) power through a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, a controller to control the inverter, wherein, during a first interval after the motor stops, the controller controls a phase current of a predetermined frequency to flow through the motor to estimate a position of a rotor of the motor, and estimates the position of the rotor of the motor based on the detected output current while the phase current of the predetermined frequency flows through the motor. Thereby, the sensorless motor driving apparatus can easily estimate the position of the motor rotor.

公开(公告)号：US20160289882A1

公开(公告)日：2016-10-06

申请号：US15082846

申请日：2016-03-28

Applicant: LG ELECTRONICS, INC.

Inventor： Hamin SONG ,  Chungill LEE

IPC: D06F37/20 ,  G06F3/14 ,  G01M1/28 ,  G06F3/16 ,  D06F35/00 ,  D06F37/04

CPC classification number: D06F37/203 ,  D06F33/02 ,  D06F35/007 ,  D06F37/04 ,  D06F37/267 ,  D06F2222/00 ,  G01M1/28 ,  G06F3/14 ,  G06F3/16

Abstract: Provided are a drum type washer and a control method thereof. Spin-drying performance and efficiency can be enhanced by determining a position and a degree of unbalance using a phase and size of a signal input through a vibration measuring device located at each of a first half portion and a second half portion of an outer side surface of a tub.

Abstract translation: 提供滚筒式洗衣机及其控制方法。 通过使用位于外侧表面的第一半部和第二半部中的每一个的振动测量装置输入的信号的相位和尺寸来确定不平衡的位置和程度，可以提高旋转干燥性能和效率 的浴缸。

公开(公告)号：US20160226426A1

公开(公告)日：2016-08-04

申请号：US15013817

申请日：2016-02-02

Applicant: LG ELECTRONICS INC.

Inventor： Junho LEE ,  Chungill LEE ,  Jungmoon JE

IPC: H02P27/06 ,  D06F37/30 ,  H02P6/28 ,  H02P21/18 ,  H02P6/14

CPC classification number: H02P27/06 ,  D06F37/304 ,  H02P6/14 ,  H02P6/28 ,  H02P21/18 ,  H02P27/085

Abstract: The present disclosure relates to a motor driving device and a laundry treatment apparatus. The motor driving device may include an inverter to convert DC power into AC power according to a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, and a controller to control the inverter based on the detected output current. The controller changes a carrier frequency, changes a voltage command based on the changed carrier frequency and outputs an inverter switching control signal to the inverter based on the changed carrier frequency and the changed voltage command. Accordingly, noise may be reduced during operation of the motor.

Abstract translation: 本发明涉及电动机驱动装置和衣物处理装置。 电动机驱动装置可以包括逆变器，其根据开关操作将DC电力转换成AC电力，并将转换的AC电力输出到电动机;输出电流检测器，用于检测流过电动机的输出电流;以及控制器，用于控制 逆变器基于检测到的输出电流。 控制器改变载波频率，根据变化的载波频率改变电压指令，并根据变化的载波频率和改变的电压指令将逆变器切换控制信号输出到逆变器。 因此，在马达运行期间噪声可能会降低。

公开(公告)号：US20210156066A1

公开(公告)日：2021-05-27

申请号：US17048927

申请日：2019-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Jungmoon JE ,  Chungill LEE ,  Kiwook LEE

IPC: D06F33/42 ,  D06F39/08 ,  D06F34/14 ,  D06F34/08 ,  F04D25/06 ,  F04D27/00 ,  H02P6/17 ,  H02P6/28

Abstract: The present disclosure relates to a drain pump driving apparatus and a laundry treatment machine including the same. A drain pump driving apparatus according to an embodiment of the present disclosure includes a controller configured to drive a motor, during drainage, based on an output current and a direct current (DC) terminal voltage with a first power when a lift is at a first level and to drive the motor with the first power when the lift is at a second level that is greater than the first level, wherein the lift is a difference between a water level of a water introduction part through which water flows into a drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump. Accordingly, water pumping can be performed smoothly even if the lift is changed during the drainage.

公开(公告)号：US20200308754A1

公开(公告)日：2020-10-01

申请号：US16900030

申请日：2020-06-12

Applicant: LG ELECTRONICS INC.

Inventor： Jungmoon JE ,  Chungill LEE ,  Kiwook LEE

IPC: D06F39/08 ,  H02P21/05 ,  D06F33/00 ,  D06F34/28 ,  D06F37/24 ,  D06F37/30 ,  D06F37/40 ,  D06F39/02 ,  H02P23/04

Abstract: Disclosed herein is a drain pump driving apparatus and a laundry treatment machine including the same. The drain pump driving apparatus and the laundry treatment machine including the same according to an embodiment of the present invention include a motor to operate the drain pump, an inverter to convert a direct current (DC) power to an alternating current (AC) power by a switching operation and output the converted AC power to the motor, an output current detector to detect an output current flowing to the motor, and a controller to control the inverter, wherein the controller may calculate a speed ripple of the motor based on the output current and performs a control operation based on the calculated speed ripple of the motor to change a speed of the motor.

公开(公告)号：US20180271344A1

公开(公告)日：2018-09-27

申请号：US15762230

申请日：2016-09-21

Applicant: LG Electronics Inc.

Inventor： Seonghoon HAN ,  Kuyoung SON ,  Chungill LEE

IPC: A47L9/28

CPC classification number: A47L9/2842 ,  A47L5/12 ,  A47L9/28 ,  A47L9/2857 ,  A47L9/2884

Abstract: The present invention relates to a vacuum cleaner. The vacuum cleaner of the present invention comprises: a cleaner body having a suction motor for generating suctioning force, and running in operating mode and charging mode; a suctioning part communicating with the cleaner body, for suctioning air and dust; a battery assembly capable of supplying power to the suction motor and having a plurality of battery packs; a controller for controlling the operation of the suction motor; a current regulating unit for regulating the current applied to the suction motor in a state in which the plurality of battery packs are serially connected; a first switching mechanism for serially connecting the plurality of battery packs; and a second switching mechanism for parallelly connecting the plurality of battery packs.

公开(公告)号：US20180235422A1

公开(公告)日：2018-08-23

申请号：US15753137

申请日：2016-08-12

Applicant: LG Electronics Inc.

Inventor： Soongkeun LEE ,  Seongwoo KIM ,  Chungill LEE

IPC: A47L9/28 ,  A47L9/26 ,  H02P4/00

CPC classification number: A47L9/2842 ,  A47L9/26 ,  A47L9/28 ,  A47L9/2857 ,  A47L9/2878 ,  A47L9/2884 ,  H02J9/02 ,  H02P4/00

Abstract: Provided are a vacuum cleaner that uses both alternating current (AC) power and direct current (DC) power without a separate switch module, and a control method thereof. The cleaner includes a suction nozzle sucking a cleaning target, a suction connection part connected to the suction nozzle and allowing the sucked cleaning target to pass therethrough, and a main body separated from the suction nozzle and having a dust box collecting the cleaning target, wherein the main body includes a suction force generating unit installed in the main body to generate a suction force and a power supply unit detachably provided in the main body to apply a voltage to the suction force generating unit, wherein the power supply unit supplies power to the suction force generating unit using any one of a DC voltage and an AC voltage.