公开(公告)号：US20220361726A1

公开(公告)日：2022-11-17

申请号：US17627917

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunku KWON ,  Sehwa CHOE ,  Donghyun LIM ,  Chaseung JUN

IPC: A47L9/28 ,  A47L5/30 ,  A47L5/36 ,  A47L9/04

Abstract: The present disclosure provides a control method capable of, by using a current value of a nozzle, determining whether a nozzle is separated from a vacuum cleaner and whether the nozzle is reconnected to the vacuum cleaner after separation. To this end, a vacuum cleaner may comprise a nozzle connectable to a suction unit for suctioning dusts. The nozzle may comprise a rotary cleaning unit for applying pressure to a cleaning target surface so as to separate a foreign substance therefrom, and a nozzle motor for driving the rotary cleaning unit. In order to drive the nozzle, a voltage having been controlled by a pulse width modulation (PWM) method is applied, and a measurement unit included in the vacuum cleaner may measure a current value of the nozzle, the current value depending on the applied voltage.

公开(公告)号：US20220273150A1

公开(公告)日：2022-09-01

申请号：US17627968

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunku KWON ,  Sehwa CHOE ,  Donghyun LIM ,  Chaseung JUN

IPC: A47L9/28 ,  A47L5/28 ,  A47L5/36 ,  A47L5/24 ,  A47L5/22 ,  A47L9/06

Abstract: The present disclosure provides a control method for automatically detecting what kind of nozzle is a nozzle mounted on a cleaner by using different starting current profiles. The cleaner may include a suction unit for suctioning dust, and various nozzles which are detachable from the suction unit. The nozzle may include a rotation cleaning unit which is accommodated in the nozzle to clean a surface to be cleaned, and a nozzle driving unit for driving the rotation cleaning unit. The nozzle may exhibit different starting current profiles depending on the number of rotations or reduction ratio of the nozzle driving unit, or whether an auxiliary control unit is included.

公开(公告)号：US20210336565A1

公开(公告)日：2021-10-28

申请号：US17366366

申请日：2021-07-02

Applicant: LG ELECTRONICS INC.

Inventor： Sunku KWON ,  Chaseung JUN

IPC: H02P5/505

Abstract: A motor driving device controls a three-phase motor and a single-phase motor to operate in parallel. The motor driving device includes a dc terminal in which an upper and a lower DC-link capacitor are located. The motor driving device also includes a neutral terminal disposed between the upper and lower DC-link capacitors. The motor driving device includes an inverter that includes three pairs of upper switching elements and lower switching elements. Two pairs of upper switching elements and lower switching elements among three pairs are connected to an a-phase terminal and a b-phase terminal of the three-phase motor, respectively. The other pair of upper switching elements and lower switching elements among three pairs is connected to a first terminal of the single-phase motor. The neutral terminal is connected to a second terminal of the single-phase motor. A c-phase terminal of the three-phase motor is connected to the single-phase motor.

公开(公告)号：US20140190219A1

公开(公告)日：2014-07-10

申请号：US14208183

申请日：2014-03-13

Applicant: LG ELECTRONICS INC.

Inventor： Jinwoong KIM ,  Changwoo SON ,  Chaseung JUN ,  Dongwon KIM ,  Hwanjin JUNG ,  Byungwook MIN ,  Byungkeol CHOI

IPC: D06F37/30

CPC classification number: D06F37/304 ,  B23P11/00 ,  B23P11/02 ,  D06F21/02 ,  D06F23/02 ,  D06F31/00 ,  D06F37/00 ,  D06F37/04 ,  D06F37/06 ,  D06F37/206 ,  D06F37/269 ,  D06F37/30 ,  H02K1/148 ,  H02K1/16 ,  H02K1/26 ,  H02K1/265 ,  H02K1/2706 ,  H02K1/2773 ,  H02K1/28 ,  H02K3/522 ,  H02K7/003 ,  H02K7/14 ,  H02K11/215 ,  H02K15/022 ,  H02K16/00 ,  H02K16/02 ,  H02K21/12 ,  H02K21/16 ,  H02K21/22 ,  H02K29/08 ,  Y02B40/52 ,  Y10T29/49826 ,  Y10T29/49945

Abstract: A washing machine includes a main body defining an outer appearance, a tub disposed within the main body, a main drum rotatably mounted in the tub, a sub drum mounted in the main drum to be relatively rotatable with respect to the main drum, an outer shaft for rotating the main drum, an inner shaft for rotating the sub drum, being disposed inside the outer shaft, and a driving motor having a stator, an outer rotor connected to the inner shaft that is rotatable outside the stator, and an inner rotor connected to the outer shaft that is rotatable inside the stator, wherein the driving motor independently drives the main drum and the sub drum.

公开(公告)号：US20230223882A1

公开(公告)日：2023-07-13

申请号：US18009585

申请日：2020-06-18

Applicant: LG Electronics Inc.

Inventor： Sunku KWON ,  Chaseung JUN ,  Jaehoon JEONG ,  Jungik HA

IPC: H02P27/06 ,  H02M7/5387 ,  H02P6/08

CPC classification number: H02P27/06 ,  H02M7/5387 ,  H02P6/085 ,  H02P6/28

Abstract: The present disclosure relates to a motor assembly, and more particularly, to a motor having a two-phase input power source and a power conversion device for driving a two-phase motor. The present disclosure relates to the motor assembly for driving the two-phase motor, the motor assembly configured to comprise: a motor including a first winding and a second winding having an electrically insulated parallel structure; a DC-link circuit for supplying a direct-current voltage; and an inverter connected to the DC-link circuit to convert the direct-current voltage into an alternating-current voltage to drive the motor, and including a first switching element set connected to the first winding and a second switching element set connected to the second winding.

公开(公告)号：US20230124336A1

公开(公告)日：2023-04-20

申请号：US17912411

申请日：2021-03-16

Applicant: LG Electronics Inc. ,  Seoul National University R&DB Foundation

Inventor： Taewoong KONG ,  Chaseung JUN ,  Sangwook HONG ,  Seungki SUL ,  Joohyun LEE ,  Hwigon KIM

IPC: D06F34/14 ,  D06F23/02 ,  D06F39/04 ,  D06F37/06 ,  D06F37/26 ,  H05B6/10 ,  G01K7/36 ,  H01F7/02 ,  H01F7/20

Abstract: Disclosed is a clothes treatment apparatus. The clothes treatment apparatus of the present disclosure may comprise: a cabinet; a drum rotatably provided in the cabinet; an induction heater which is disposed outside the drum and heats the drum; a magnet which is fixed to the drum and of which a residual magnetic flux density changes depending on temperature; and a coil fixed to the outside of the drum and disposed at a position overlapping the magnet in the longitudinal direction of the central axis of rotation of the drum.

公开(公告)号：US20220271690A1

公开(公告)日：2022-08-25

申请号：US17744303

申请日：2022-05-13

Applicant: LG Electronics Inc.

Inventor： Sunku KWON ,  Chaseung JUN ,  Sehwa CHOE ,  Wookjin LEE

IPC: H02P5/50 ,  H02P21/22

Abstract: A device for driving a plurality of motors, including an inverter connected to a DC terminal; a multi-phase motor connected to the inverter; and a single-phase motor serially connected to the multi-phase motor, wherein a number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at the same speed is smaller than the number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at different speeds. Accordingly, a plurality of motors can be simultaneously driven at different speeds, by using a single inverter.

公开(公告)号：US20210135606A1

公开(公告)日：2021-05-06

申请号：US17087789

申请日：2020-11-03

Applicant: LG ELECTRONICS INC.

Inventor： Sunku KWON ,  Chaseung JUN ,  Jaehoon JEONG ,  Sehwa CHOE

IPC: H02P5/505

Abstract: A device for driving a plurality of motors and an electric apparatus includes a first and a second capacitor, an inverter connected to a DC terminal, a multi-phase motor connected to the inverter, a single-phase motor serially connected with the multi-phase motor, and a controller configured to control the inverter. For starting the single phase motor during operation of the multi-phase motor, the controller is configured to perform, during an alignment period, an alignment of a rotor of the single-phase motor and perform, during a voltage compensation period, a voltage compensation for compensating a voltage change of a DC terminal neutral point between the first capacitor and the second capacitor based on the alignment of the rotor of the single-phase motor.

公开(公告)号：US20150020555A1

公开(公告)日：2015-01-22

申请号：US14505889

申请日：2014-10-03

Applicant: LG Electronics Inc.

Inventor： Chaseung JUN ,  Byungkeol CHOI ,  Youngmin KIM ,  Dongwon KIM ,  Hyundong KIM ,  Hwanjin JUNG ,  Byungwook MIN ,  Kyeonghwan KIM ,  Jinwoong KIM ,  Changwoo SON ,  Hyunseok SEO

IPC: D06F37/04 ,  H02K1/14 ,  H02K15/02 ,  D06F37/20 ,  D06F37/30

CPC classification number: D06F37/04 ,  D06F33/02 ,  D06F35/006 ,  D06F37/06 ,  D06F37/08 ,  D06F37/206 ,  D06F37/30 ,  D06F37/304 ,  D06F39/003 ,  D06F2202/06 ,  D06F2202/10 ,  D06F2202/12 ,  D06F2204/06 ,  D06F2204/065 ,  H02K1/14 ,  H02K15/02 ,  Y10T29/49009

Abstract: A washing machine includes a main body defining an outer appearance, a tub disposed within the main body, a main drum rotatably mounted in the tub, a sub drum mounted in the main drum to be relatively rotatable with respect to the main drum, an outer shaft for rotating the main drum, an inner shaft for rotating the sub drum, being disposed inside the outer shaft, and a driving motor having a stator, an outer rotor connected to the inner shaft that is rotatable outside the stator, and an inner rotor connected to the outer shaft that is rotatable inside the stator, wherein the driving motor independently drives the main drum and the sub drum.

Abstract translation: 洗衣机包括限定外观的主体，设置在主体内的桶，可旋转地安装在桶中的主鼓，安装在主滚筒中的副滚筒，以相对于主滚筒相对旋转;外滚筒 用于使主鼓旋转的轴，设置在外轴内的用于使副滚筒旋转的内轴，以及具有定子的驱动马达，与定子外部可旋转的内轴连接的外转子，以及内转子 连接到可在定子内旋转的外轴，其中驱动电机独立地驱动主鼓和副鼓。

公开(公告)号：US20140069149A1

公开(公告)日：2014-03-13

申请号：US14018114

申请日：2013-09-04

Applicant: LG ELECTRONICS INC.

Inventor： Jinwoong KIM ,  Changwoo SON ,  Chaseung JUN ,  Dongwon KIM ,  Hwanjin JUNG ,  Byungwook MIN ,  Byungkeol CHOI

IPC: D06F37/30 ,  D06F37/04

CPC classification number: D06F37/304 ,  B23P11/00 ,  B23P11/02 ,  D06F21/02 ,  D06F23/02 ,  D06F31/00 ,  D06F37/00 ,  D06F37/04 ,  D06F37/06 ,  D06F37/206 ,  D06F37/269 ,  D06F37/30 ,  H02K1/148 ,  H02K1/16 ,  H02K1/26 ,  H02K1/265 ,  H02K1/2706 ,  H02K1/2773 ,  H02K1/28 ,  H02K3/522 ,  H02K7/003 ,  H02K7/14 ,  H02K11/215 ,  H02K15/022 ,  H02K16/00 ,  H02K16/02 ,  H02K21/12 ,  H02K21/16 ,  H02K21/22 ,  H02K29/08 ,  Y02B40/52 ,  Y10T29/49826 ,  Y10T29/49945

Abstract: A washing machine includes a main body defining an outer appearance, a tub disposed within the main body, a main drum rotatably mounted in the tub, a sub drum mounted in the main drum to be relatively rotatable with respect to the main drum, an outer shaft for rotating the main drum, an inner shaft for rotating the sub drum, being disposed inside the outer shaft, and a driving motor having a stator, an outer rotor connected to the inner shaft that is rotatable outside the stator, and an inner rotor connected to the outer shaft that is rotatable inside the stator, wherein the driving motor independently drives the main drum and the sub drum.

Abstract translation: 洗衣机包括限定外观的主体，设置在主体内的桶，可旋转地安装在桶中的主鼓，安装在主滚筒中的副滚筒，以相对于主滚筒相对旋转;外滚筒 用于使主鼓旋转的轴，设置在外轴内的用于使副滚筒旋转的内轴，以及具有定子的驱动马达，与定子外部可旋转的内轴连接的外转子，以及内转子 连接到可在定子内旋转的外轴，其中驱动电机独立地驱动主鼓和副鼓。