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公开(公告)号：US12281653B2
公开(公告)日：2025-04-22
申请号：US18691383
申请日：2022-07-29
Applicant: LG ELECTRONICS INC.
Inventor： Byungkil Yoo , Jungsun Choi , Seheon Choi
Abstract: A scroll compressor includes a plurality of fixing protrusions that are provided spaced apart from each other in a key that constitutes an Oldham ring, and an orbiting scroll, to which the key is coupled, or a ring body of the Oldham ring may be provided with a plurality of fixing grooves which are spaced part from each other and into which the plurality of fixing protrusions are respectively inserted and fixed.
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公开(公告)号：US11434909B2
公开(公告)日：2022-09-06
申请号：US17260098
申请日：2019-07-12
Applicant: LG Electronics Inc.
Inventor： Kangwook Lee , Jungsun Choi , Cheolhwan Kim
IPC: F04C18/02
Abstract: Provided is a compressor apparatus comprising: a casing defining appearance of the apparatus; and a drive portion coupled to an inner circumferential surface of the casing and configured to rotate a rotatable shaft; a compression portion coupled to the rotatable shaft and configured to compress fluid, wherein the compression portion apparatus is characterized in that the drive portion and the compression portion are fixed to the fastening member which is detachably attached to at least one of the side face of the drive portion or the side face of the compression portion and thus, the combination of the drive portion and the compression portion is coupled to an inner circumferential surface of the casing. Further, provided is a manufacturing method of the compression portion apparatus.
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公开(公告)号：US11078908B2
公开(公告)日：2021-08-03
申请号：US16692088
申请日：2019-11-22
Applicant: LG ELECTRONICS INC.
Inventor： Yong Kyu Choi , Cheol Hwan Kim , Kangwook Lee , Jungsun Choi
Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.
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公开(公告)号：US20180372099A1
公开(公告)日：2018-12-27
申请号：US15830222
申请日：2017-12-04
Applicant: LG ELECTRONICS INC.
Inventor： Yong Kyu CHOI , Cheol Hwan Kim , Kangwook Lee , Jungsun Choi
Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.
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公开(公告)号：US12258964B2
公开(公告)日：2025-03-25
申请号：US18066615
申请日：2022-12-15
Applicant: LG Electronics Inc.
Inventor： Byungkil Yoo , Jungsun Choi , Seheon Choi
Abstract: A scroll compressor is disclosed. The scroll compressor includes a rotating shaft coupling portion axially extending from a central portion of an orbiting end plate to radially overlap an orbiting wrap, such that an eccentric portion of a rotating shaft is coupled thereto, and a portion of the orbiting wrap may extend from an end surface of the rotating shaft coupling portion facing a fixed end plate. With the configuration, a distance between bearing reaction force and gas reaction force acting on the orbiting scroll can be reduced, to stabilize a behavior of the orbiting scroll and thus reduce back pressure, thereby decreasing friction loss between scrolls. Simultaneously, compression chambers can be formed even in a central portion of the orbiting scroll, which can increase a compression ratio and improve volumetric efficiency.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11668302B2
公开(公告)日：2023-06-06
申请号：US17552939
申请日：2021-12-16
Applicant: LG Electronics Inc.
Inventor： Jungsun Choi , Kyungho Lee , Minho Lee
CPC classification number: F04C18/0215 , F04C2/025 , F04C15/0088 , F04C18/0253 , F04C23/008 , F04C29/025 , F04C29/028 , F04C2240/30
Abstract: A scroll compressor includes a first oil supply passage communicating with a first compression chamber formed between an inner circumferential surface of a fixed wrap and an outer circumferential surface of an orbiting wrap, and a second oil supply passage separated from the first oil supply passage and communicating with a second compression chamber formed between an outer circumferential surface of the fixed wrap and an inner circumferential surface of the orbiting wrap, wherein the first oil supply passage includes an oil supply guide portion provided in a thrust surface of the fixed scroll in contact with the orbiting scroll to define a part of the first oil supply passage, whereby communication between the first and second compression chambers can be prevented, thereby suppressing leakage between the compression chambers, stabilizing behavior of the orbiting scroll, and facilitating formation of the orbiting scroll.
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公开(公告)号：US11434908B2
公开(公告)日：2022-09-06
申请号：US16914726
申请日：2020-06-29
Applicant: LG ELECTRONICS INC.
Inventor： Sang Baek Park , Jungsun Choi , Cheol Hwan Kim , Byeongchul Lee
IPC: F01C1/02 , F03C2/00 , F03C4/00 , F04C18/00 , F04C2/00 , F04C18/02 , F01C21/00 , F04C29/12 , F04C29/02 , F04C23/00
Abstract: A compressor is provided which is configured to allow lubrication of a thrust surface through an oil groove formed in a thrust surface of a fixed scroll. Also, a scroll compressor is provided which smoothly supplies oil to a thrust surface of a fixed scroll by including a fixed scroll having an oil groove formed in the thrust surface of a fixed scroll sidewall, and allows an injection pressure acting on an orbiting scroll in an upward direction to be added by supplying the oil guided to the oil groove to the thrust surface of the fixed scroll such that an overturn moment generated in the orbiting scroll may be offset.
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公开(公告)号：US11346220B2
公开(公告)日：2022-05-31
申请号：US16790234
申请日：2020-02-13
Applicant: LG Electronics Inc.
Inventor： Sangbaek Park , Jungsun Choi , Cheolhwan Kim
Abstract: A compressor includes a rotation shaft, a drive unit, and a compression unit. The compression unit includes a fixed scroll, an orbiting scroll, a main frame that is disposed on the fixed scroll, and an Oldham's ring coupled to the orbiting scroll and the main frame and configured to restrict rotation of the orbiting scroll. The Oldham's ring includes a ring body disposed between the orbiting scroll and the main frame, keys that protrude from the ring body that are each coupled to the orbiting scroll or the main frame, and caps that are inserted into the main frame and that each have (i) a coupling hole that receives a key among the keys and (ii) a machined portion that faces the coupling hole and that is spaced apart from at least a portion of an outer surface of the key.
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公开(公告)号：US10724521B2
公开(公告)日：2020-07-28
申请号：US15491009
申请日：2017-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Jungsun Choi , Howon Lee , Cheolhwan Kim
Abstract: A scroll compressor is provided that may include a casing; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and rotated together with the rotor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the fixed wrap. In a state in which a center of the fixed scroll and a center of the orbiting scroll are substantially the same, an interval between the fixed wrap and the orbiting wrap gradually increases towards the suction chamber from the discharge chamber.
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公开(公告)号：US11674510B2
公开(公告)日：2023-06-13
申请号：US17344469
申请日：2021-06-10
Applicant: LG Electronics Inc.
Inventor： Jungsun Choi , Kangwook Lee , Kyungho Lee
CPC classification number: F04C18/0215 , F04C23/008 , F04C29/12 , F04C29/126 , F04C2240/30
Abstract: A scroll compressor includes a refrigerant suction pipe coupled to a discharge cover or a fixed scroll through a casing in a radial direction, a suction passage communicating the refrigerant suction pipe with a compression chamber, and a suction passage opening and closing valve disposed inside the suction passage to be slidable in an axial direction so as to selectively open or close the suction passage. Accordingly, when the compressor is stopped, oil or refrigerant in the casing can be restricted quickly so as not to flow back to the refrigerant suction pipe through a compression unit.
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