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公开(公告)号：US11362601B2
公开(公告)日：2022-06-14
申请号：US16988329
申请日：2020-08-07
申请人： LG Electronics Inc.
发明人： Sunku Kwon , Chaseung Jun , Sehwa Choe , Wookjin Lee
摘要： 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.
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公开(公告)号：US10023985B2
公开(公告)日：2018-07-17
申请号：US14735923
申请日：2015-06-10
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Bonkwon Koo , Sunho Lee , Sanghyun Lee
摘要： Washing machine control method including an outer tub and an inner tub containing clothes rotatably disposed therein. The method includes detecting an amount of dry clothes, supplying water between the outer and inner tub such that the clothes are not wetted, discharging water from the outer tub to a circulation channel and introducing water into the inner tub through the circulation channel to wet the clothes, discharging unabsorbed water collected in the outer tub to the circulation channel such that a water level in the outer tub becomes zero while detecting a flow rate of water, and determining an amount of circulation water discharged to the circulation channel based on the flow rate detected until a water level in the outer tub becomes zero and determining properties of the clothes based on the amount of circulation water and a predetermined anticipated amount of circulation water corresponding to the amount of dry clothes detected.
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公开(公告)号：US12029380B2
公开(公告)日：2024-07-09
申请号：US17627968
申请日：2020-06-18
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Sehwa Choe , Donghyun Lim , Chaseung Jun
CPC分类号： A47L9/2842 , A47L5/225 , A47L5/24 , A47L5/28 , A47L5/362 , A47L9/0673 , A47L9/2805 , A47L9/2831 , A47L9/2847
摘要： 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.
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公开(公告)号：US11805967B2
公开(公告)日：2023-11-07
申请号：US17627917
申请日：2020-06-18
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Sehwa Choe , Donghyun Lim , Chaseung Jun
CPC分类号： A47L9/2831 , A47L5/30 , A47L5/362 , A47L9/0411 , A47L9/2842 , A47L9/2847 , A47L9/0477
摘要： 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.
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公开(公告)号：US11705832B2
公开(公告)日：2023-07-18
申请号：US17744303
申请日：2022-05-13
申请人： LG Electronics Inc.
发明人： Sunku Kwon , Chaseung Jun , Sehwa Choe , Wookjin Lee
CPC分类号： H02P5/50 , H02P21/22 , H02P2201/03 , H02P2209/01
摘要： 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.
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公开(公告)号：US20210044224A1
公开(公告)日：2021-02-11
申请号：US16987628
申请日：2020-08-07
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Chaseung Jun , Sehwa Choe , Wookjin Lee
IPC分类号： H02P5/50
摘要： A device for driving a plurality of motors and an electric apparatus having the same is disclosed. The device includes an inverter connected to a DC terminal, a multi-phase motor connected to the inverter, a single-phase motor serially connected to the multi-phase motor, and a first capacitor and a second capacitor connected in series between a first end and a second end of the DC terminal, wherein the single-phase motor is connected to the multi-phase motor, and a node between the first capacitor and the second capacitor. Accordingly, a plurality of motors serially connected with each other can be driven by using a single inverter.
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公开(公告)号：US10266980B2
公开(公告)日：2019-04-23
申请号：US14628956
申请日：2015-02-23
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Hwanjin Jung , Sanghyun Lee , Bonkwon Koo
摘要： A washing machine and a control method thereof including supplying wash water into a space defined between an outer tub and an inner tub without wetting the laundry placed in the inner tub, operating the circulation pump to supply water from the outer tub to the inner tub, measuring a current value supplied to a circulation pump, stopping the operation of the circulation pump based on the measured current value, and calculating the amount of wash water supplied by the circulation pump based on the number of rotations of the circulation pump integrated until that time.
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公开(公告)号：US11329578B2
公开(公告)日：2022-05-10
申请号：US16987628
申请日：2020-08-07
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Chaseung Jun , Sehwa Choe , Wookjin Lee
摘要： A device for driving a plurality of motors and an electric apparatus having the same is disclosed. The device includes an inverter connected to a DC terminal, a multi-phase motor connected to the inverter, a single-phase motor serially connected to the multi-phase motor, and a first capacitor and a second capacitor connected in series between a first end and a second end of the DC terminal, wherein the single-phase motor is connected to the multi-phase motor, and a node between the first capacitor and the second capacitor. Accordingly, a plurality of motors serially connected with each other can be driven by using a single inverter.
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公开(公告)号：US11326292B2
公开(公告)日：2022-05-10
申请号：US16073837
申请日：2017-01-20
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Youngho Kim , Kahyung Choi , Hocheol Kwon , Youngkee Oh
IPC分类号： D06F37/36 , D06F23/02 , D06F39/08 , D06F37/20 , D06F35/00 , D06F33/43 , D06F37/40 , D06F37/04 , D06F21/00 , D06F103/26 , D06F105/02 , D06F105/08
摘要： A drum washing machine includes a tub and a drum rotatably supported in the tub and implements a control method that allows the tub to be easily cleaned. The method of controlling the washing machine includes supplying washing water during a first water supplying step to the interior of the tub while the drum is rotating at a water-supplying RPM; and executing a first wash step following completion of the first water supply step by accelerating the rotation of the drum from the water-supplying RPM to a first-wash RPM so that a circulatory flow is created in which the washing water falls from the top of opposite ends of the tub while circulating along the inner circumferential surface of the tub due to the rotational power of the drum.
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公开(公告)号：US11214909B2
公开(公告)日：2022-01-04
申请号：US16074109
申请日：2017-01-20
申请人： LG ELECTRONICS INC.
发明人： Sunku Kwon , Kahyung Choi , Youngho Kim , Inhyouk Seo , Youngkee Oh
IPC分类号： D06F35/00 , D06F33/43 , D06F39/08 , D06F37/06 , D06F37/36 , D06F103/26 , D06F105/02 , D06F105/08 , D06F33/36 , D06F33/42 , D06F33/56 , D06F33/69 , D06F33/62
摘要： A drum washing machine implements a control method, allowing a tub of the drum washing machine to be easily cleaned. The method includes supplying washing water during a first water supplying step to the interior of the tub while a drum rotatably supported in the tub rotates at a water-supplying RPM. A first wash step is executed following completion of the first water supplying step, and includes accelerating rotation of the drum from the water-supplying RPM to a first-wash RPM to that create a circulatory flow in which the washing water falls from the top of opposite ends of the tub while circulating along the inner circumferential surface of the tub due to the rotational power of the drum. A wash draining step is started during the first wash step, and includes turning on the drain pump and controlling the amount of the washing water in the tub.
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