公开(公告)号：US11427946B2

公开(公告)日：2022-08-30

申请号：US16498635

申请日：2018-03-27

Applicant: LG ELECTRONICS INC.

Inventor： Moonsuk Choi ,  Kyunghoon Kim ,  Younghan Cho

IPC: D06F35/00 ,  D06F33/48 ,  D06F34/16 ,  D06F21/00 ,  D06F37/20 ,  D06F49/06 ,  D06F33/40 ,  D06F103/26 ,  D06F105/48 ,  D06F37/22

Abstract: Disclosed is a method for controlling a spin-drying cycle of a laundry treatment machine. The method includes performing a plurality of spin-drying operations by rotating a drum above an adjusted rotational speed range configured to adjust disposition of balls within a ball balancer so as to correspond to a changed amount of eccentricity, and adjusting the disposition of the balls within the ball balancer by rotating the drum within the adjusted rotational speed range, between the respective spin-drying operations.

公开(公告)号：US10214843B2

公开(公告)日：2019-02-26

申请号：US15045832

申请日：2016-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghoon Kim

IPC: D06F33/02 ,  D06F29/02 ,  D06F39/00

Abstract: A control method of a washing machine may include supplying water to a predetermined unbalance induction water level into a wash tub configured to accommodate fabric, the wash tub being rotated about a vertical axis, rotating a pulsator inside the wash tub, sensing an amount of fabric, rotating the wash tub at a constant acceleration, determining unbalance based on a current value applied to a motor in a state in which a rotational speed of the wash tub falls in a given range and the sensed amount of fabric while the wash tub is rotated at the constant acceleration, and supplying water to a first water supply level into the wash tub when the unbalance is greater than a reference value, and supplying water to a second water supply level, which is higher than the first water supply level, when the unbalance is smaller than the reference value.

公开(公告)号：US11208748B2

公开(公告)日：2021-12-28

申请号：US16711374

申请日：2019-12-11

Applicant: LG Electronics Inc.

Inventor： Kyunghoon Kim

IPC: D06F33/48 ,  D06F39/08 ,  D06F33/00 ,  D06F34/18 ,  D06F103/24 ,  D06F105/48 ,  D06F103/04

Abstract: Washing machine technology, in which an initial speed in a drainage process is determined after a rinsing mode is finished, and a laundry distributing operation is performed in which a rotational speed of the motor is maintained at the determined initial speed. The washing machine determines whether a degree of laundry distribution satisfies an allowable range by comparing information detected by a vibration sensor with previously stored reference information. The initial speed is determined to be a rotational speed of the motor at an intersection time point at which vibration of a fundamental wave and vibration of higher harmonics detected by the vibration sensor intersect with each other.

公开(公告)号：US11549207B2

公开(公告)日：2023-01-10

申请号：US16778853

申请日：2020-01-31

Applicant: LG Electronics Inc.

Inventor： Suncheol Bae ,  Kyunghoon Kim ,  Junghun Kim

IPC: D06F33/48 ,  D06F37/20 ,  D06F103/26 ,  D06F33/44 ,  D06F103/24 ,  D06F37/04

Abstract: A washing machine includes a washing tub configured to accommodate laundry therein, a motor configured to rotate the washing tub, and a controller. The controller is configured to: determine a laundry amount and a laundry-tangled degree by using a plurality of types of data that are measured while rotating the washing tub at a specific rotational speed; set an allowable unbalance (UB) value corresponding to the laundry amount and the laundry-tangled degree; determine a UB value based on rotating the washing tub during a dewatering stroke; and control the motor to stop rotating the washing tub based on the UB value exceeding the allowable UB value.

公开(公告)号：US09745685B2

公开(公告)日：2017-08-29

申请号：US14048892

申请日：2013-10-08

Applicant: LG ELECTRONICS INC.

Inventor： Minho Jang ,  Kyunghoon Kim ,  Hoonbong Lee

IPC: D06F37/30 ,  D06F39/00

CPC classification number: D06F37/304 ,  D06F39/003 ,  D06F2202/12 ,  D06F2204/065

Abstract: Disclosed are a laundry treatment machine and a method of operating the same. The method of operating the laundry treatment machine that processes laundry via rotation of a wash tub includes accelerating a rotational velocity of the tub during an accelerated rotating section, rotating the tub at a constant velocity during a constant velocity rotating section, and determining an amount of laundry in the tub based on a first output current flowing through a motor that is used to rotate the tub during the accelerated rotating section and a second output current flowing through the motor during the constant velocity rotating section. This ensures efficient sensing of amount of laundry.

公开(公告)号：US10047470B2

公开(公告)日：2018-08-14

申请号：US15011296

申请日：2016-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghoon Kim ,  Younghan Cho ,  Moonsuk Choi

IPC: D06F33/02 ,  D06F37/20 ,  D06F39/00 ,  D06F39/08 ,  D06F37/12 ,  D06F29/02

Abstract: Disclosed is a method of controlling a washing machine including detecting an amount of clothes contained in a drum, supplying washing water based on the detected amount of clothes, washing the clothes by applying current to a drive module after the supply of the washing water, a rinsing operation of rinsing the clothes by supplying water to a tub from an external water source, after the washing of the clothes, determining unbalance of the clothes by applying current to the drive module while washing water is contained in the tub, after the rinsing of the clothes, dispersing the clothes by controlling the current applied to the drive module when the unbalance of the clothes is determined to be equal to or higher than a set value, discharging the washing water contained in the tub when the unbalance of the clothes is determined to be lower than the set value, and dehydrating the clothes to remove the washing water from the clothes, after the discharge of the washing water.

公开(公告)号：US09765468B2

公开(公告)日：2017-09-19

申请号：US14536004

申请日：2014-11-07

Applicant: LG ELECTRONICS INC. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Kyunghoon Kim ,  Jayeong Yu ,  Seungjun Chee ,  Seungki Sul ,  Minho Jang

IPC: D06F37/30 ,  D06F33/02 ,  H02P6/182 ,  H02P6/20

CPC classification number: D06F37/304 ,  D06F33/02 ,  D06F2202/12 ,  D06F2204/06 ,  H02P6/182 ,  H02P6/20 ,  Y02B40/52

Abstract: The laundry treatment machine, absent a position sensor to sense the rotor position of a motor, includes a driving unit having an DC/AC inverter, an voltage detection unit to detect output voltage, and an inverter controller to control the inverter. The output voltage detection unit includes a plurality of resistors connected between the inverter and the motor and a comparator to compare voltage detected by some of the resistors with reference voltage and to detect pulse width modulation (PWM)-based output voltage. The voltage detection unit outputs the PWM-based output voltage output from the comparator to the inverter controller in a first mode in which at least one switching device of the inverter is turned on. The voltage detection unit outputs voltage detected by other some of the resistors to the inverter controller in a second mode in which all switching devices of the inverter are turned off.