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公开(公告)号：US20160348296A1
公开(公告)日：2016-12-01
申请号：US15165840
申请日：2016-05-26
Applicant: LG ELECTRONICS INC.
Inventor： Hyunjin KIM , Changwoo Son , Minho Jang
CPC classification number: D06F37/40 , D06F13/02 , D06F17/08 , D06F39/003
Abstract: A laundry treatment machine includes a wash tub, a pulsator provided inside the wash tub and to be rotated, a motor to rotate at least one of the wash tub and the pulsator, a clutch to selectively transmit torque of the motor to at least one of the wash tub and the pulsator, a clutch drive unit to control driving of the clutch unit, and a controller to control the motor to repeat rotation and braking in a first direction a first number of times during a first time period after operation of the clutch is changed. With this configuration, in the top-loading type laundry treatment machine, the coupling force of the clutch may be increased when operation of the clutch is changed.
Abstract translation: 洗衣机包括洗涤桶，设置在洗涤桶内并要旋转的波轮，用于使洗涤桶和波轮中的至少一个旋转的电动机，用于选择性地将电动机的扭矩传递到以下各项中的至少一个的离合器： 洗涤桶和波轮，用于控制离合器单元的驱动的离合器驱动单元，以及控制器，用于在离合器的操作之后的第一时间段期间控制马达在第一方向上重复旋转和制动第一次 改变了 采用这种结构，在顶装式洗衣机中，当离合器的操作改变时，离合器的联接力可能会增加。
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公开(公告)号：US20150128661A1
公开(公告)日：2015-05-14
申请号：US14535702
申请日：2014-11-07
Applicant: LG ELECTRONICS INC.
Inventor： Hansu JUNG , Soongkeun Lee , Minho Jang
CPC classification number: D06F37/304 , D06F33/02 , D06F2202/12 , D06F2204/10 , H02P6/182 , Y02B40/52
Abstract: The laundry treatment machine; absent a position sensor to sense a rotor position, includes a driving unit having a DC/AC inverter, an output voltage detection unit to detect output voltage applied to the motor, and an inverter controller to control the inverter to drive the motor based on the output voltage. The output voltage detection unit includes a plurality of resistors electrically 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. Based on the PWM-based output voltage at least one switching device of the inverter is turned on. The output 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.
Abstract translation: 洗衣机; 没有用于感测转子位置的位置传感器，包括具有DC / AC逆变器的驱动单元，用于检测施加到电动机的输出电压的输出电压检测单元，以及逆变器控制器，用于基于 输出电压。 输出电压检测单元包括电连接在逆变器和电动机之间的多个电阻器和比较器，用于将由一些电阻器检测到的电压与参考电压进行比较，并检测基于脉宽调制（PWM）的输出电压。 基于PWM的输出电压，逆变器的至少一个开关器件导通。 输出电压检测单元将其他一些电阻器检测到的电压以逆变器的所有开关装置关闭的第二模式输出到逆变器控制器。
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公开(公告)号：US20190169785A1
公开(公告)日：2019-06-06
申请号：US16208036
申请日：2018-12-03
Applicant: LG Electronics Inc.
Inventor： Ilman Seo , Deokjoon Jeong , Minho Jang
Abstract: Disclosed are a dryer and a method of controlling the same, the dryer which is capable of: quickly and accurately determining an amount of laundry loaded in the dryer and controlling a drying operation according to the amount of the laundry: measuring a current supplied to rotate the drum and extracting a force applied to laundry in the drum to measure an amount of the laundry, thereby minimizing an error in the amount of laundry and thus enhancing accuracy of the measurement and improving a drying time; setting a drying time in consideration of both a calculated amount of laundry and a type of the laundry, such that damage to the laundry is prevented and over-drying or less-drying of the laundry is solved, thereby efficiently drying the laundry; and setting a drying time or a rotation speed during a drying operation according to an amount of laundry.
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公开(公告)号：US10050571B2
公开(公告)日：2018-08-14
申请号：US15160313
申请日：2016-05-20
Applicant: LG ELECTRONICS INC.
Inventor： Minho Jang
Abstract: A motor driving apparatus includes an inverter to convert a direct current (DC) voltage into an alternating current (AC) voltage through a switching operation and to output the AC voltage to a motor, an output current detector to detect an output current flowing in the motor, and a controller to control the inverter, wherein, at the time of starting the motor, the controller controls a first current, including a DC component and a high-frequency component, to be supplied to the motor during a first period for alignment of the motor, and controls a second current, including a DC component and a high-frequency component, to be supplied to the motor during a second period for alignment of the motor, and the controller calculates the stator resistance and inductance of the motor based on the first current and the second current. Consequently, it is possible to easily calculate the stator resistance and inductance of the motor during the alignment of the motor.
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公开(公告)号：US09765468B2
公开(公告)日：2017-09-19
申请号：US14536004
申请日：2014-11-07
Inventor： Kyunghoon Kim , Jayeong Yu , Seungjun Chee , Seungki Sul , Minho Jang
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.
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Patent Agency Ranking
公开(公告)号：US09708746B2
公开(公告)日：2017-07-18
申请号：US14535780
申请日：2014-11-07
Applicant: LG ELECTRONICS INC.
Inventor： Minho Jang , Hoonbong Lee , Hansu Jung
CPC classification number: D06F37/304 , D06F33/02 , D06F2202/065 , D06F2202/10 , D06F2202/12 , D06F2204/065 , D06F2222/00 , H02P1/16 , H02P6/18 , H02P6/21 , H02P6/22 , H02P21/34 , Y02B40/52
Abstract: A laundry treatment machine includes a drum, a motor to rotate the drum, and a driving unit to drive the motor, wherein the driving unit includes an inverter to convert direct current (DC) voltage into alternating current (AC) voltage and to output the AC voltage to the motor and an inverter controller to control the inverter to supply an alignment current to the motor so as to align the motor during a starting operation of the motor and to supply a torque current for rotating the motor to the motor together with the alignment current after the motor is aligned. Such a laundry treatment apparatus prevents a reverse rotation phenomenon of the drum due to load.
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公开(公告)号：US11168425B2
公开(公告)日：2021-11-09
申请号：US15718217
申请日：2017-09-28
Applicant: LG ELECTRONICS INC.
Inventor： Hoonbong Lee , Minho Jang , Jaegwang Bae
IPC: D06F35/00 , D06F34/18 , D06F37/26 , D06F39/04 , D06F39/08 , D06F37/22 , D06F39/14 , D06F37/06 , D06F37/30 , D06F37/38 , D06F39/02 , D06F39/00 , D06F23/02 , D06F33/00 , D06F34/28
Abstract: An amount of laundry that is introduced into a washing machine is determined by identifying gravitational and inertia forces applied during the operation of a motor, whereby it is possible to precisely calculate the amount of laundry and to minimize the effects of the initial position of the laundry and the movement of the laundry. In addition, the current value of the motor that is operated is used to measure the amount of laundry without a sensor. Furthermore, the amount of laundry is measured at the rotational speed of the motor at which the laundry clings to the drum, whereby it is possible to minimize error due to the movement of the laundry to thus improve accuracy. Moreover, it is possible to determine the amount of laundry within a short time. Consequently, it is easy to commence the spin-drying operation, thereby reducing washing time and saving energy.
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公开(公告)号：US10907287B2
公开(公告)日：2021-02-02
申请号：US15718315
申请日：2017-09-28
Applicant: LG ELECTRONICS INC.
Inventor： Hoonbong Lee , Minho Jang , Jaegwang Bae
IPC: D06F33/00 , D06F34/18 , D06F23/02 , D06F37/22 , D06F37/30 , D06F34/28 , D06F37/06 , D06F37/26 , D06F37/38 , D06F39/00 , D06F39/02 , D06F39/04 , D06F39/08 , D06F39/14
Abstract: An amount of laundry that is introduced into a washing machine is calculated using gravity and inertia applied during the operation of a motor, whereby the amount of laundry is precisely measured and effects of the initial position of the laundry and the movement of the laundry are minimized. In addition, a measured current of the operated motor is used to determine the amount of laundry without a sensor. Furthermore, the rotational speed of the motor is controlled stepwise from a low speed to eliminate variation due to vibration. Moreover, the characteristics of gravity in the low-speed maintenance period are used to effectively calculate the amount of laundry, and the characteristics of inertia in the acceleration period are also used, whereby it is possible to precisely determine the amount of laundry. Consequently, it is easy to commence the spin-drying operation, thereby reducing washing time and saving energy.
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公开(公告)号：US20190169783A1
公开(公告)日：2019-06-06
申请号：US16207909
申请日：2018-12-03
Applicant: LG ELECTRONICS INC.
Inventor： Ilman Seo , Deokjoon Jeong , Minho Jang
IPC: D06F58/28
Abstract: Disclosed are a dryer and a method of controlling the same, the dryer which is capable of: quickly and accurately determining an amount of laundry loaded in the dryer and controlling a drying operation according to the amount of the laundry: measuring a current supplied to rotate the drum and extracting a force applied to laundry in the drum to measure an amount of the laundry, thereby minimizing an error in the amount of laundry and thus enhancing accuracy of the measurement and improving a drying time; setting a drying time in consideration of both a calculated amount of laundry and a type of the laundry, such that damage to the laundry is prevented and over-drying or less-drying of the laundry is solved, thereby efficiently drying the laundry.
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公开(公告)号：US10291170B2
公开(公告)日：2019-05-14
申请号：US15017337
申请日：2016-02-05
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon Je , Minho Jang , Hyunjin Kim
Abstract: The present disclosure relates to a motor driving device and a laundry treatment apparatus. An inverter is configured to convert a DC voltage of DC terminals into an AC voltage according to a switching operation and to output the AC voltage to a motor. A DC terminal voltage detector is configured to detect the voltage of the DC terminals, and an output current detector is configured to detect an output current flowing through the motor. A controller is configured to control the inverter based on the detected output current. The controller controls the motor to operate based on a flux current command value from among the flux current command values and a torque current command value for driving the motor in an overvoltage protection mode when the detected DC terminal voltage is higher than a first predetermined value and power is supplied from the motor to the DC terminals. Abrupt DC terminal voltage increase may be prevented.
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