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公开(公告)号：US10132314B2
公开(公告)日：2018-11-20
申请号：US15817531
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, communicating 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. This configuration may prevent a discharge delay in advance in each compression chamber, and thus, preventing a compression loss.
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公开(公告)号：US11603841B2
公开(公告)日：2023-03-14
申请号：US17202937
申请日：2021-03-16
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu Choi , Junghoon Park , Taekyoung Kim
Abstract: A scroll compressor includes an oil circulation pipe having one end inserted through a casing to be connected to an oil storage space inside the casing and another end connected to a suction passage for supplying refrigerant from outside of the casing to a compression chamber, an oil circulation valve disposed between the both ends of the oil circulation pipe to selectively open or close the oil circulation pipe, and a controller to control an opening or closing operation of the oil circulation pipe to reduce or eliminate frictional loss due to a shortage of oil by adjusting an oil level of the oil storage space at an initial operation.
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公开(公告)号：US20220364560A1
公开(公告)日：2022-11-17
申请号：US17874485
申请日：2022-07-27
Applicant: LG Electronics Inc.
Inventor： Yongkyu Choi , Kangwook Lee , Cheolhwan Kim , Byeongchul Lee
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. In a state in which the orbiting scroll and the fixed scroll are concentric with each other, when a distance between the orbiting wrap and the fixed wrap is defined as an orbiting radius, there exists an offset section having an interval larger than the orbiting radius, between a side surface of the orbiting wrap and a side surface of the fixed wrap which faces the orbiting wrap. With such a configuration, even if the fixed scroll or the orbiting scroll is transformed due to thermal expansion, interference between the fixed wrap and the orbiting wrap at a portion having a large transformation amount may be prevented. This may prevent a frictional loss or abrasion between the fixed wrap and the orbiting wrap. Further, this may restrict or minimize a gap between the fixed wrap and the orbiting wrap at an opposite side to the suction chamber, resulting in enhanced compression efficiency.
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公开(公告)号：US20200095994A1
公开(公告)日：2020-03-26
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：US10570899B2
公开(公告)日：2020-02-25
申请号：US15491059
申请日：2017-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Kangwook Lee , Yongkyu Choi , Cheolhwan Kim
Abstract: A scroll compressor may include a casing configured to contain oil at a lower portion; a drive motor provided in the casing; a rotational shaft coupled to the drive motor, and having an oil supply passage in order to guide oil contained in the casing to an upper side; 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 to form a compression chamber with the fixed wrap, and having rotational shaft coupling portion. One or more oil dimples may be formed at a peripheral end surface of the rotational shaft coupling portion. With such a configuration, as oil may be smoothly supplied to an end surface of the orbiting wrap near the rotational shaft coupling portion, abrasion may be prevented.
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Patent Agency Ranking
公开(公告)号：US10208752B2
公开(公告)日：2019-02-19
申请号：US15817657
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 discharge outlet of at least one of the first discharge port or the second discharge port may have a larger sectional area than the discharge inlet. Accordingly, a discharge delay in each compression chamber may be prevented in advance, thereby suppressing compression loss.
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公开(公告)号：US10125767B2
公开(公告)日：2018-11-13
申请号：US15624841
申请日：2017-06-16
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu Choi , Inho Won , Cheolhwan Kim
IPC: F03C2/00 , F03C4/00 , F04C2/00 , F04C18/00 , F04C18/02 , F04C23/00 , F04C28/26 , F04C15/06 , F04C29/12
Abstract: There is disclosed a scroll compressor according to the present disclosure in which a discharge port is formed at a central portion thereof, and a pair of two compression chambers continuously moving toward the discharge port are formed, and a plurality of bypass portions are formed at each interval along a movement path of each compression chamber in the both compression chambers, and compression gradients of the both compression chambers are formed to be different from each other, wherein when an interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval, respectively, a first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is formed to be smaller than that of a first bypass portion belonging to the other compression chamber between the both compressor chambers.
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公开(公告)号：US20180238327A1
公开(公告)日：2018-08-23
申请号：US15956970
申请日：2018-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu Choi , Cheolhwan Kim , Byeongchul Lee
CPC classification number: F04C18/0269 , F04C18/0215 , F04C23/008
Abstract: A compressor is provided. The compressor may include a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers. The fixed wrap and the orbiting wrap may have irregular wrap curves. At least one interference avoiding portion at which a spacing between the wraps is greater than an orbiting radius or at least one gap compensating portion at which the spacing between the wraps is smaller than the orbiting radius, in a state in which a center of the fixed scroll and a center of the orbiting scroll are aligned with each other, may be provided on a sidewall surface of the fixed wrap or the orbiting wrap, whereby frictional loss or abrasion due to interference between the wraps or a refrigerant leakage due to a gap between the wraps may be prevented.
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公开(公告)号：US09920760B2
公开(公告)日：2018-03-20
申请号：US14286903
申请日：2014-05-23
Applicant: LG ELECTRONICS INC.
Inventor： Sanghun Sung , Kangwook Lee , Yongkyu Choi
CPC classification number: F04C18/0269 , F01C17/066 , F04C18/0215 , F04C23/008
Abstract: A scroll compressor is provided. An interference prevention portion may be formed on a side wall surface of at least one of a fixed wrap or an orbiting wrap. With such a configuration, an end of the fixed wrap may not interfere with the orbiting wrap at an arc compression surface of the orbiting wrap, but rather, be inserted into the interference prevention portion. Accordingly, occurrence of a gap between the fixed wrap and the orbiting wrap may be prevented, and thus, compression efficiency enhanced.
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公开(公告)号：US09726177B2
公开(公告)日：2017-08-08
申请号：US14796313
申请日：2015-07-10
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu Choi , Kangwook Lee , Cheolhwan Kim
CPC classification number: F04C29/0057 , F04C18/0215 , F04C23/008 , F04C29/025 , F04C2240/50
Abstract: A scroll compressor is disclosed which prevents leakage of refrigerant from a compression chamber and abrasion of bearings between a rotating shaft and an orbiting scroll by reducing the tilting angle of the orbiting scroll, because the allowable bearing angle is equal to or larger than the tilting angle, where the allowable bearing angle θ refers to the maximum angle at which the orbiting scroll is tilted with respect to the rotating shaft, and the tilting angle β refers to the angle at which the orbiting scroll is tilted with respect to the plate.
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