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公开(公告)号：US10711782B2
公开(公告)日：2020-07-14
申请号：US15817515
申请日：2017-11-20
Applicant: LG ELECTRONICS INC.
Inventor： Jungsun Choi , Yongkyu Choi , Cheolhwan Kim
Abstract: A scroll compressor is provided that may include a first wrap, and a second wrap engaged with the first wrap and coupled to be eccentric to a center of rotation of a rotational shaft to form a compression chamber, moving toward a central portion, together with the first wrap while performing an orbiting motion with respect to the first wrap. A height of at least one of the first wrap or the second wrap may be formed to have at least two inclination machining amounts which decrease toward the central portion, and the inclination machining amount of the central portion may be larger than the inclination machining amount of an edge portion or a wrap rigidity at a specific section, thereby preventing frictional loss or abrasion of the wrap and breakage of the wrap.
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公开(公告)号：US10648471B2
公开(公告)日：2020-05-12
申请号：US15448955
申请日：2017-03-03
Applicant: LG ELECTRONICS INC.
Inventor： Taekyoung Kim , Kangwook Lee , Cheolhwan Kim , Byeongchul Lee
Abstract: A scroll compressor is provided that may include a casing that contains oil in a lower space thereof; a drive motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotational shaft coupled to a rotor of the drive motor, and having an oil supply passage to guide the oil contained in the casing to an upper side of the drive motor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber by being engaged with the fixed wrap, and a rotational shaft coupling portion to couple the rotational shaft to the orbiting scroll in a penetrating manner; and an oil collection unit including an oil separator provided at the upper space of the casing, and an oil guide having a first end that communicates with the oil separator and a second end that communicates with a lower space of the fixed scroll.
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公开(公告)号：US10202978B2
公开(公告)日：2019-02-12
申请号：US15817584
申请日：2017-11-20
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu Choi , Kangwook Lee , Cheolhwan Kim
Abstract: A scroll compressor is provided that may include a first compression chamber, a second compression chamber separated from the first compression chamber and having a greater compression ratio than the first compression chamber, a first discharge port that communicates with the first compression chamber and provided with a first discharge inlet and a first discharge outlet, and a second discharge port separated from the first discharge port, that communicates with the second compression chamber, and provided with a second discharge inlet and a second discharge outlet, the second discharge inlet having a larger sectional area than the first discharge inlet. The first discharge inlet and the first discharge outlet may have a same cross section, and the second discharge inlet and the second discharge outlet may have a same cross section. Accordingly, a discharge delay in each compression chamber may be prevented in advanced, and thus, compression loss may be suppressed.
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公开(公告)号：US12215684B2
公开(公告)日：2025-02-04
申请号：US18231878
申请日：2023-08-09
Applicant: LG ELECTRONICS INC.
Inventor： Howon Lee , Cheolhwan Kim , Sangbaek Park
Abstract: A scroll compressor may include an oil supply passage provided independent of an intermediate pressure chamber to allow an oil passage of a rotational shaft to communicate with a compression chamber, such that some of the oil suctioned through the oil passage is guided to the compression chamber. As an inner space of a casing communicates directly with the compression chamber without passing through the intermediate pressure chamber, even in a state in which an operating pressure ratio is, for example, 1.3 or less, namely, even if a differential pressure between the inner space and the compression chamber is not large, oil stored in the inner space may be smoothly supplied to the compression chamber.
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公开(公告)号：US12129854B2
公开(公告)日：2024-10-29
申请号：US17274037
申请日：2019-09-04
Applicant: LG Electronics Inc.
Inventor： Seungmock Lee , Jonghun Ha , Cheolhwan Kim , Kangwook Lee
CPC classification number: F04C29/061 , F04C2/025 , F04C23/008 , F04C29/065 , F04C29/066 , F04C29/12 , F05D2260/963
Abstract: The present invention relates to a compressor comprising: a muffler that provides a sealed space for guiding a refrigerant; and a resonator provided in the muffler and forming cavities separate from the sealed space to decrease vibration and noise caused by the refrigerant.
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Patent Agency Ranking
公开(公告)号：US11927186B2
公开(公告)日：2024-03-12
申请号：US18150002
申请日：2023-01-04
Applicant: LG Electronics Inc.
Inventor： Yoonsung Choi , Sangbaek Park , Cheolhwan Kim
CPC classification number: F04C15/06 , F04C2/025 , F04C18/0269 , F04C18/0292 , F04C2210/26 , F04C2250/101 , F04C2250/20 , F04C2250/30
Abstract: Provided is a scroll compressor. The scroll compressor may be provided with at least one refrigerant accommodating groove recessed to a preset depth in at least one from a side surface of a fixed wrap constituting a compression chamber and a side surface of an orbiting wrap. Thus, a volume of the compression chamber in a discharge area may be increased in correspondence with a volume of the at least one refrigerant accommodating groove, and a space into which liquid refrigerant, etc. may escape may be ensured to resolve excessive compression in the compression chamber. Then, a stress exerted on the fixed wrap is reduced, and a damage to the fixed wrap due to pressure in the compression chamber may be suppressed.
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公开(公告)号：US11353027B2
公开(公告)日：2022-06-07
申请号：US16791511
申请日：2020-02-14
Applicant: LG Electronics Inc.
Inventor： Taekyoung Kim , Kangwook Lee , Cheolhwan Kim
Abstract: A compressor includes a casing configured to accommodate refrigerant and oil, a discharger disposed at a side of the casing and configured to discharge the refrigerant, a driver including a stator and a rotor, a rotation shaft that is coupled to the rotor and that extends in a direction away from the discharger, a compressing assembly that is coupled to the rotation shaft, that is configured to be lubricated with the oil, and that is configured to compress the refrigerant and discharge the compressed refrigerant in the direction away from the discharger, a muffler coupled to the compressing assembly and configured to guide the refrigerant to the discharger, and a bypassing portion disposed outside the casing and configured to transfer the refrigerant or the oil from the muffler to the discharger.
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公开(公告)号：US11306719B2
公开(公告)日：2022-04-19
申请号：US16444369
申请日：2019-06-18
Applicant: LG Electronics Inc.
Inventor： Nayoung Jeon , Taekyoung Kim , Cheolhwan Kim
Abstract: A compressor is disclosed. The compressor includes a case having an oil reservoir space for storing oil in a lower portion of the case and a refrigerant discharge pipe for discharging a compressed refrigerant in an upper portion of the case, a drive motor provided in the case, a rotary shaft rotatably coupled to the drive motor, a compression unit coupled to the rotary shaft to compress the refrigerant, and a discharge cover hermetically coupled to a lower end of the compression unit and configured to guide an oil-containing refrigerant compressed by the compression unit toward the refrigerant discharge pipe, wherein a guide is provided between the compression unit and the discharge cover and configured to guide an oil-containing refrigerant discharged from the compression unit toward the refrigerant discharge pipe.
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公开(公告)号：US11209001B2
公开(公告)日：2021-12-28
申请号：US16693450
申请日：2019-11-25
Applicant: LG ELECTRONICS INC.
Inventor： Cheolhwan Kim , Yongkyu Choi , Taekyoung Kim
Abstract: A scroll compressor is provided that may include an orbiting scroll having an orbiting wrap, and which performs an orbiting motion; and a fixed scroll having a fixed wrap to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the orbiting wrap. A wrap thickness of the fixed wrap may be greater than a wrap thickness of the orbiting wrap within a range which forms the suction chamber. With such a configuration, even if the fixed scroll or the orbiting scroll is thermally-expanded, a transformation of the fixed wrap at a suction side may be prevented. This may prevent a gap between the fixed wrap and the orbiting wrap at an opposite side to the suction side, thereby enhancing compression efficiency.
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公开(公告)号：USRE48826E1
公开(公告)日：2021-11-23
申请号：US16850303
申请日：2020-04-16
Applicant: LG ELECTRONICS INC.
Inventor： Kangwook Lee , Cheolhwan Kim , Byeongchul Lee
Abstract: A compressor is provided that may include a passage separator provided between an electric motor drive and a compression device to separate a refrigerant passage from an oil passage. The passage separator may include a first partition wall and a second partition wall. The first partition wall may be disposed between an inner circumferential surface of a casing and a discharge hole of the compression device, and the second partition wall may be disposed between the discharge hole and a balance weight. Accordingly, the refrigerant passage may be separated from the oil passage between the compression device and electric motor drive, thereby efficiently recovering oil to an oil storage space.
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