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22 条记录 (耗时 0.016 秒)

    DISPLACEMENT SENSOR
    2.
    发明申请
    DISPLACEMENT SENSOR 有权

    公开(公告)号：US20210310829A1

    公开(公告)日：2021-10-07

    申请号：US17213535

    申请日：2021-03-26

    申请人： LG ELECTRONICS INC.

    发明人： Seongki BAEK ,  Kiwook Lee ,  Sena Jeong

    IPC分类号： G01D5/20 ,  H01F27/28 ,  H01F27/02

    摘要： The present disclosure relates to a displacement sensor. A displacement sensor according to the embodiment of the present disclosure includes a coil structure consisting of wound coil, a shield member formed to surround an outer periphery of the coil structure and a housing, wherein the housing comprises an upper side wall part surrounding an outer periphery of the shield member and a lower side wall part formed to extend from the upper side wall part, wherein an inner circumferential surface of the lower side wall part is protruded toward the inside of the housing more than an inner circumferential surface of the upper side wall part, wherein an outer circumferential surface of the lower side wall part may include a depressed region formed to be depressed into the inside of the housing by a predetermined depth.

    Compressor and the compressor controlling method
    3.
    发明授权
    Compressor and the compressor controlling method 有权

    公开(公告)号：US10808711B2

    公开(公告)日：2020-10-20

    申请号：US15684557

    申请日：2017-08-23

    申请人： LG ELECTRONICS INC.

    发明人： Namsoo Lee ,  Solji Ryu ,  Kiwook Lee ,  Seongmin Jang

    IPC分类号： F25B49/02 ,  F04D27/00 ,  F04D29/053 ,  F04D29/058 ,  F04D29/28 ,  F25B31/02 ,  G01B7/14 ,  F25B1/053 ,  F25B39/00

    摘要： The present invention provides a compressor that includes: one or more impellers that axially suck and centrifugally compress a refrigerant; a rotary shaft that is connected with the impeller and a motor for rotating the impeller; a plurality of magnetic bearings that supports the rotary shaft in the air so that the rotary shaft can rotate; a gap sensor that senses the distance from the rotary shaft; and a controller that determines abnormal wire connection of the magnetic bearings on the basis of information from the gap sensor. The controller can sense movement of the rotary shaft through the gap sensor while controlling the amount of current supplied to any one of the magnetic bearings and can determine whether there is abnormal wire connection on the basis of the information.

    Displacement sensor having a coil structure, a shield member and a housing
    4.
    发明授权
    Displacement sensor having a coil structure, a shield member and a housing 有权

    公开(公告)号：US11920959B2

    公开(公告)日：2024-03-05

    申请号：US17213535

    申请日：2021-03-26

    申请人： LG ELECTRONICS INC.

    发明人： Seongki Baek ,  Kiwook Lee ,  Sena Jeong

    IPC分类号： G01D5/20 ,  H01F27/02 ,  H01F27/28

    CPC分类号： G01D5/2086 ,  H01F27/02 ,  H01F27/288

    摘要： The present disclosure relates to a displacement sensor. A displacement sensor according to the embodiment of the present disclosure includes a coil structure consisting of wound coil, a shield member formed to surround an outer periphery of the coil structure and a housing, wherein the housing comprises an upper side wall part surrounding an outer periphery of the shield member and a lower side wall part formed to extend from the upper side wall part, wherein an inner circumferential surface of the lower side wall part is protruded toward the inside of the housing more than an inner circumferential surface of the upper side wall part, wherein an outer circumferential surface of the lower side wall part may include a depressed region formed to be depressed into the inside of the housing by a predetermined depth.

    Refrigerator
    5.
    发明授权
    Refrigerator 有权

    公开(公告)号：US11674721B2

    公开(公告)日：2023-06-13

    申请号：US17253213

    申请日：2019-07-10

    申请人： LG ELECTRONICS INC.

    发明人： Kiwook Lee ,  Namsoo Lee ,  Chanmyung Park

    IPC分类号： F25B31/00 ,  F28F3/12

    CPC分类号： F25B31/006 ,  F28F3/12

    摘要： A refrigerator according to an embodiment of the present invention includes: a compressor configured to compress a refrigerant; and an inverter module configured to control the compressor, wherein the inverter module includes: a heatsink provided with a cooling passage through which coolant passes; a coolant inlet connected to the heatsink to communicate with an inlet of the cooling passage; a coolant outlet connected to the heatsink to communicate with an outlet of the cooling passage; at least one insulated gate bipolar transistor (IGBT) disposed on a top surface of the heatsink; and at least one diode disposed to be spaced apart from the IGBT on the top surface of the heatsink, wherein the cooling passage includes: an IGBT cooling passage that is closer to the coolant inlet among the coolant inlet and the coolant outlet; and a diode cooling passage that is closer to the coolant outlet among the coolant inlet and the coolant outlet, wherein the diode cooling passage is disposed behind the IGBT cooling passage in a flow direction of the coolant.

    METHOD AND APPARATUS FOR COMPRESSOR
    7.
    发明申请
    METHOD AND APPARATUS FOR COMPRESSOR 有权

    公开(公告)号：US20210301828A1

    公开(公告)日：2021-09-30

    申请号：US17210850

    申请日：2021-03-24

    申请人： LG ELECTRONICS INC.

    发明人： Seongki Baek ,  Kiwook Lee ,  Sena Jeong

    IPC分类号： F04D27/00 ,  F04D29/051 ,  F04D29/043 ,  F04D29/66 ,  F04D27/02

    摘要： A compressor is provided. The compressor according to the present disclosure includes: one or more impellers suctioning and compressing refrigerant; a motor rotating the impeller; a rotation shaft to which the impeller and the motor are connected; a gap sensor measuring a displacement change of the rotation shaft as a frequency change; a temperature compensation sensor determining a frequency compensation value according to a temperature change around the gap sensor; and a control unit calculating a displacement amount of the rotation shaft by reflecting the frequency compensation value provided by the temperature compensation sensor and the frequency change measured by the gap sensor.

    Drain pump driving apparatus and laundry treatment machine including the same
    8.
    发明授权
    Drain pump driving apparatus and laundry treatment machine including the same 有权

    公开(公告)号：US10711387B2

    公开(公告)日：2020-07-14

    申请号：US15490475

    申请日：2017-04-18

    申请人： LG ELECTRONICS INC.

    发明人： Jungmoon Je ,  Chungill Lee ,  Kiwook Lee

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

    摘要： 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.

    Laundry treatment machine
    10.
    发明授权
    Laundry treatment machine 有权

    公开(公告)号：US11885057B2

    公开(公告)日：2024-01-30

    申请号：US17258058

    申请日：2019-07-05

    申请人： LG ELECTRONICS INC.

    发明人： Wonseok Park ,  Jieon Kim ,  Kiwook Lee

    IPC分类号： D06F33/42 ,  D06F34/10 ,  D06F37/30 ,  D06F39/08

    CPC分类号： D06F33/42 ,  D06F34/10 ,  D06F37/30 ,  D06F39/08

    摘要： The present disclosure relates to a laundry treatment machine. A laundry treatment machine comprises: an inverter to convert the DC voltage from the converter into alternating current (AC) voltage by a switching operation and to output the converted AC voltage to a motor; and a controller that controls such that, while a washing tub motor is rotating at a constant speed, a drain motor operates in a first period during which the speed of the drain motor increases, a second period during which the speed of the drain motor decreases after the first period, and a third period during which the speed of the drain motor decreases after the second period, wherein a rising slope in the second period is less than a falling slope in the third period. Accordingly, a speed ripple of the drain motor may be reduced.