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公开(公告)号:US10436191B2
公开(公告)日:2019-10-08
申请号:US15362053
申请日:2016-11-28
申请人: LG Electronics Inc.
发明人: Nayi Ryu , Sungjin Lim , Kyoungseok Kang
摘要: Disclosed is a compressor for use with an apparatus having a refrigeration cycle where the compressor includes a piston which reciprocates in a cylinder; a linear motor configured to provide a driving force to move the piston; a sensor configured to sense a motor current of the linear motor; and a compressor controller configured to detect information related to a load of the apparatus, in a separated manner from a controller which controls a body of the apparatus, wherein the compressor controller calculates a phase difference between a stroke of the piston and the sensed motor current, and wherein the compressor controller compares the calculated phase difference with a reference phase difference, and controls a driving of the linear motor in correspondence to the detected load, according to a result of the comparison.
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公开(公告)号:US09850890B2
公开(公告)日:2017-12-26
申请号:US14570550
申请日:2014-12-15
申请人: LG ELECTRONICS INC.
发明人: Sungjin Lim , Nayi Ryu , Sungho Park
CPC分类号: F04B49/06 , F04B35/04 , F04B35/045 , F04B49/065 , F04B2203/0401 , F04B2203/0402 , F25B31/023 , F25B49/022
摘要: The control module includes a drive circuitry that drives the linear compressor based on a control signal, a detector that detects a motor current and a motor voltage corresponding to a motor of the linear compressor, an asymmetric current generator that generates an asymmetric motor current by applying a current offset to the detected motor current, and a controller that generates the control signal based on the asymmetric motor current and the detected motor voltage. Such a control module may increase a maximum freezing capacity by appropriately (or optimally) designing (setting) an initial value of a piston in a driving area or an operation area (or a high-efficiency driving area) of a compressor by considering the efficiency aspect, and executing an asymmetric operation in a high-load driving area (or a high freezing capacity driving area).
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公开(公告)号:US11313360B2
公开(公告)日:2022-04-26
申请号:US16545541
申请日:2019-08-20
申请人: LG ELECTRONICS INC.
发明人: Nayi Ryu , Chulgi Roh , Gahyun Oh
摘要: A linear compressor according to the present disclosure may include a cylinder provided with at least one groove, a piston reciprocating within the cylinder, a motor configured to provide a driving force to move the piston within the cylinder, an inverter configured to perform a switching operation to transmit electric power to the motor, and a controller configured to receive temperature information from the electronic device and control the inverter to preheat the motor based on the received temperature information.
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公开(公告)号:US10408209B2
公开(公告)日:2019-09-10
申请号:US15361117
申请日:2016-11-25
申请人: LG ELECTRONICS INC.
摘要: Disclosed are a compressor applied to a refrigerator not having a cycle matching function or a refrigerator not including a controller, and capable of controlling a driving of a linear motor by the compressor itself, and a method for controlling the same. The compressor installed at an apparatus including a refrigeration cycle includes: a piston which reciprocates in a cylinder; a linear motor configured to provide a driving force to move the piston; a sensor configured to sense a motor current of the linear motor; and a compressor controller configured to detect information related to a load of the apparatus, in a separated manner from a controller which controls a body of the apparatus, wherein the compressor controller calculates a phase difference between a stroke of the piston and the sensed motor current, and wherein the compressor controller controls a driving of the linear motor in correspondence to the detected load, such that the calculated phase difference is within a range of a reference phase difference.
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公开(公告)号:US10309392B2
公开(公告)日:2019-06-04
申请号:US15335800
申请日:2016-10-27
申请人: LG ELECTRONICS INC.
发明人: Jongyoon Choi , Sungjin Lim , Nayi Ryu , Chaehong Lim , Seunggeun Baek , Hyeongseok Kim
IPC分类号: F04B49/12 , F04B35/04 , F04B49/06 , F04B53/12 , F04B53/16 , F04B39/00 , F04B39/12 , F04B49/14
摘要: A linear compressor and a method for controlling a compressor are provided. The compressor may include a piston that reciprocates within a cylinder, a linear motor that supplies a driving force to the piston, a discharge device through which a refrigerant compressed in the cylinder by the reciprocating motion of the piston is discharged, a pressure changing device that changes a variation rate of pressure applied to the piston before the piston reaches a virtual discharge surface (VDS) during the reciprocating motion, to prevent collision between the piston and the discharge device. The virtual discharge surface may be formed on at least a portion of the discharge device facing a compression space within the cylinder.
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公开(公告)号:US11674728B2
公开(公告)日:2023-06-13
申请号:US16603123
申请日:2018-04-04
申请人: LG Electronics Inc.
发明人: Nayi Ryu
CPC分类号: F25B49/022 , F04B35/045 , F04B49/12 , F25B1/02 , F25B2400/073 , F25B2500/12 , F25B2500/19 , F25B2600/021 , F25B2600/024 , F25B2700/06
摘要: Described are a compressor driving apparatus and a refrigerator including the same. The compressor driving apparatus includes: switching elements; an inverter; an output current detector for detecting an output current flowing through a motor; and an inverter controller for controlling the inverter. The inverter controller controls the piston so that one end of the piston is fixed at a first position spaced apart from the discharge unit at stroke of the piston during a first period, controls the piston to collide with the discharge unit when a change rate in an operation rate or a position error of the compressor is equal to or greater than a predetermined value, and controls the piston so that the one end of the piston is fixed at a second position spaced apart from the discharge unit at stroke of the piston during a second period after the collision of the piston.
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公开(公告)号:US11434886B2
公开(公告)日:2022-09-06
申请号:US16703491
申请日:2019-12-04
申请人: LG Electronics Inc.
发明人: Daegeun Park , Nayi Ryu , Sungjin Lim
摘要: A linear compressor includes, a cylinder, a piston configured to reciprocate inside the cylinder, a motor configured to supply driving force to the piston, a detector configured to detect a motor current and a motor voltage that are applied to the motor, and a controller configured to estimate a stroke of the piston based on the motor current and the motor voltage and to determine a phase difference between the stroke and the motor current. The controller is configured to detect operation information of the linear compressor, determine whether to perform a resonance operation based on the operation information, and control operation of the motor to allow the phase difference to be within a preset phase range.
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公开(公告)号:US10982668B2
公开(公告)日:2021-04-20
申请号:US15857369
申请日:2017-12-28
申请人: LG Electronics Inc.
发明人: Sungjin Lim , Gyunam Kim , Nayi Ryu
摘要: Provided is a linear compressor capable of reducing noise and manufacturing cost. The linear compressor includes a piston reciprocating within a cylinder, a motor providing a driving force for movement of the piston, a sensing unit sensing a motor voltage and a motor current related to the motor, a discharge part installed at one end of the cylinder and adjusting discharge of a refrigerant compressed within the cylinder, and a controller detecting a load variation of the motor using at least one of the motor voltage and the motor current, calculating a compensation value related to a position of the piston each time a load variation of the motor is detected, and detecting an absolute position of the piston using the calculated compensation value.
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公开(公告)号:US20170152846A1
公开(公告)日:2017-06-01
申请号:US15362053
申请日:2016-11-28
申请人: LG Electronics Inc.
发明人: Nayi Ryu , Sungjin Lim , Kyoungseok Kang
CPC分类号: F04B49/06 , F04B35/04 , F04B35/045 , F04B49/065 , F04B2201/0201 , F04B2203/0401 , F25B1/02 , F25B49/022 , F25B2400/073 , F25B2700/06 , F25B2700/151
摘要: Disclosed is a compressor for use with an apparatus having a refrigeration cycle where the compressor includes a piston which reciprocates in a cylinder; a linear motor configured to provide a driving force to move the piston; a sensor configured to sense a motor current of the linear motor; and a compressor controller configured to detect information related to a load of the apparatus, in a separated manner from a controller which controls a body of the apparatus, wherein the compressor controller calculates a phase difference between a stroke of the piston and the sensed motor current, and wherein the compressor controller compares the calculated phase difference with a reference phase difference, and controls a driving of the linear motor in correspondence to the detected load, according to a result of the comparison.
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