公开(公告)号：US20210285140A1

公开(公告)日：2021-09-16

申请号：US17258107

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongbin REW ,  Junho LEE ,  Chungill LEE

IPC: D06F33/42 ,  H02P27/08 ,  H03F3/45 ,  D06F39/08 ,  D06F37/30 ,  D06F34/10 ,  D06F23/04 ,  F04D13/06 ,  F04D15/00

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 converter; a voltage dropper to drop the DC voltage from the converter; an inverter module to operate based on a first voltage from the voltage dropper and to output AC voltage converted by a switching operation to a drain pump motor; a controller to operate based on a second voltage from the voltage dropper and to control the inverter module; and a voltage adjuster to adjust the level of voltage information of the motor outputted from the inverter module and to output the adjusted voltage information to the controller. Accordingly, it is possible to stably drive the drain motor.

公开(公告)号：US20210269963A1

公开(公告)日：2021-09-02

申请号：US17258335

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Junsung KIM ,  Jihoon KIM ,  Junho LEE

IPC: D06F39/08 ,  D06F33/36 ,  D06F37/30 ,  D06F34/10 ,  D06F23/02 ,  H02P27/08 ,  H02M7/5387 ,  F04D13/06 ,  F04D15/00

Abstract: The present disclosure relates to a circulation pump driving apparatus and a laundry treatment machine. A circulation pump driving apparatus and a laundry treatment machine according to an embodiment of the present disclosure includes an inverter converting a DC voltage from a converter into an alternating current (AC) voltage by a switching operation and outputting the converted AC voltage to a circulation pump motor, and a controller to control the circulation pump motor to operate in at least two modes among a first mode in which a speed of the circulation pump motor is constant, a second mode in which the speed of the circulation pump motor repeatedly rises and falls, and a third mode in which the speed of the circulation pump motor rises at a first rising slope and a second rising slope and then remains constant. Accordingly, it is possible to improve washing power due to circulation pumping during washing.

公开(公告)号：US20210234494A1

公开(公告)日：2021-07-29

申请号：US17258149

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Jieon KIM ,  Jeongbin REW ,  Junho LEE

IPC: H02P29/024 ,  H02P27/08 ,  D06F39/08 ,  D06F34/10 ,  D06F33/42 ,  D06F33/47 ,  F04D13/06 ,  F04D15/00

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 converter; an inverter to output converted AC voltage to a drain pump motor; an output current detector to detect an output current flowing in the motor; and a controller to control the inverter, wherein in case in which the speed of the motor increases and the output current flowing in the motor decreases during a predetermined period among an operation period of the drain motor, the controller controls the inverter to be turned off. Accordingly, it is possible to protect internal circuit elements in case the motor loses its synchronism.

公开(公告)号：US20200149203A1

公开(公告)日：2020-05-14

申请号：US16746182

申请日：2020-01-17

Applicant: LG ELECTRONICS INC.

Inventor： Kihoon CHOI ,  Junho LEE ,  Seongmin JANG ,  Jonghwan LEE ,  Woonghui WON ,  Jongseok JUNG ,  Sangwook LEE

IPC: D06F33/00 ,  D06F34/28 ,  D06F34/18 ,  D06F39/14 ,  D06F39/08 ,  D06F39/02 ,  D06F37/36 ,  D06F37/30 ,  D06F37/26 ,  D06F37/22 ,  D06F37/12 ,  D06F37/04 ,  D06F29/02

Abstract: A method of controlling a laundry treatment apparatus includes: determining whether bubbles have been generated in a tub of the laundry treatment apparatus in a state in which a second washing apparatus of the laundry treatment apparatus is operated based on a sequence of operations; and based on a determination that bubbles have been generated, reducing bubbles by (i) adding at least one first operation to the sequence of operations or (ii) replacing at least one second operation of the sequence of operations.

公开(公告)号：US20190028532A1

公开(公告)日：2019-01-24

申请号：US16068166

申请日：2016-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Junho LEE ,  Hyun JEONG

IPC: H04L29/08 ,  H04W76/10 ,  G06F17/30

CPC classification number: H04L67/06 ,  G06F16/16 ,  G06F16/176 ,  G06F16/182 ,  H04L65/1059 ,  H04L65/4069 ,  H04M1/7253 ,  H04M1/72558 ,  H04M2250/64 ,  H04W76/10 ,  H04W84/20 ,  H04W88/02

Abstract: The present invention relates to a mobile terminal for executing a file reproduction function, the mobile terminal comprising: a wireless communication unit configured to perform communication with an external terminal; and a control unit for forming a network for file sharing with the external terminal, receiving a file path corresponding to a specific file from the external terminal, so as to allow the mobile terminal to access the external terminal through the formed network and reproduce a file, and generating a reproduction list which includes a file path pre-stored in the mobile terminal and the file path received from the external device, wherein, when a file to be currently reproduced among files included in the reproduction list corresponds to a file, the file path of which has been received from the external terminal, the control unit accesses the external terminal through the formed network and reproduces a file corresponding to the received file path by a streaming method, on the basis of the received file path, and when a file to be currently reproduced among files included in the reproduction list corresponds to a file path pre-stored in the mobile terminal, the control unit reproduces a file by a local reproduction method, on the basis of the file path pre-stored in the mobile terminal.

公开(公告)号：US20170047875A1

公开(公告)日：2017-02-16

申请号：US15232855

申请日：2016-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Minho JANG ,  Junho LEE ,  Chungill LEE

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

CPC classification number: H02P21/18 ,  H02P6/183 ,  H02P6/20 ,  H02P6/22 ,  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.

Abstract translation: 包括在家用电器中的电动机驱动装置可以包括逆变器，其通过开关操作将直流（DC）功率转换成交流（AC）电力，并将转换的交流电力输出到电动机，输出电流检测器 检测流过电动机的输出电流，控制器控制逆变器，其中，在电动机停止之后的第一间隔期间，控制器控制预定频率的相电流流过电动机以估计转子的位置 电动机，并且基于检测到的输出电流来估计电动机的转子的位置，同时预定频率的相电流流过电动机。 由此，无传感器电动机驱动装置能够容易地估计电动机转子的位置。