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公开(公告)号：US20200240410A1
公开(公告)日：2020-07-30
申请号：US16848188
申请日：2020-04-14
Applicant: LG Electronics Inc.
Inventor： Yongkyu CHOI , Inho WON , Cheolhwan KIM
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：US20200158108A1
公开(公告)日：2020-05-21
申请号：US16547705
申请日：2019-08-22
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu CHOI , Honghee PARK , Bumjune SEO , Byeongchul LEE
IPC: F04C18/02
Abstract: A motor operated compressor has a housing having a motor chamber and a driving motor located in the motor chamber. The compressor also has a first scroll and a second scroll coupled to the first scroll to form a compression chamber. A rotating shaft is coupled to a rotor of the driving motor and eccentrically coupled to the first scroll. A rear housing of the motor forms a discharge chamber with the second scroll. A shaft receiving portion that radially supports the rotating shaft is located either in the second scroll or in the rear housing. An oil supply guide flow path located either in the second scroll or in the rear housing connects the discharge chamber and the shaft receiving portion. A decompression member inserted into the oil supply guide flow path, reduces a pressure of a fluid passing through the oil supply guide flow path.
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公开(公告)号：US20190136857A1
公开(公告)日：2019-05-09
申请号：US16239620
申请日：2019-01-04
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：US20170306954A1
公开(公告)日：2017-10-26
申请号：US15491023
申请日：2017-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Cheolhwan KIM , Yongkyu CHOI , Taekyoung Kim
CPC classification number: F04C18/0269 , F01C21/102 , F04C18/0215 , F04C23/008 , F04C2230/602
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：US20250035113A1
公开(公告)日：2025-01-30
申请号：US18714172
申请日：2022-07-05
Applicant: LG ELECTRONICS INC.
Inventor： Minho LEE , Yongkyu CHOI , Bumdong SA
IPC: F04C18/344 , F04C29/02
Abstract: In a rotary compressor, at least any one of a main bearing or a sub-bearing may have at least one axial-direction support portion that extends from an outer circumferential surface of a back pressure pocket and is formed to have a predetermined depth. The compressor may increase an oil film pressure that supports a roller in an axial direction thereof to stably support the roller including a rotational shaft in the axial direction, thereby effectively suppressing or preventing friction loss and abrasion between the roller and the main bearing facing the roller and between the roller and the sub-bearing.
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Patent Agency Ranking
公开(公告)号：US20230137362A1
公开(公告)日：2023-05-04
申请号：US17972767
申请日：2022-10-25
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu CHOI , Kiyoul NOH , Bumdong SA
IPC: F04C14/12
Abstract: A rotary compressor, including a cylinder, an inner peripheral surface of which is defined in an annular shape to define a compression space, provided with a suction port configured to communicate with the compression space to suction and provide refrigerant to the compression space; a roller rotatably provided in the compression space of the cylinder, and including with a plurality of vane slots at predetermined intervals along an outer peripheral surface, the plurality of vanes each providing a back pressure at one side thereinside; a plurality of vanes slidably inserted into the plurality of vane slots, respectively, to rotate together with the roller, front end surfaces of the plurality of vanes coming into contact with an inner periphery of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers; and a main bearing and a sub bearing provided at both ends of the cylinder, respectively.
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公开(公告)号：US20200088195A1
公开(公告)日：2020-03-19
申请号：US16573480
申请日：2019-09-17
Applicant: LG Electronics Inc.
Inventor： Byungkil YOO , Kyoungjun PARK , Byeongchul LEE , Yongkyu CHOI
Abstract: A scroll type compressor includes a motor including a rotor; a rotatable shaft coupled to the rotor; a frame disposed adjacent to the motor to support the rotatable shaft; a fixed scroll coupled to the frame; an orbiting scroll eccentrically coupled to the rotatable shaft, wherein the orbiting scroll is engaged with the fixed scroll to orbit relative to the fixed scroll; and a balance weight including: a coupling portion having an inner opening defined therein receiving the rotatable shaft, wherein the coupling portion is coupled to and between the rotor and the frame; and a weight portion extending from an outer periphery of the coupling portion.
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公开(公告)号：US20200049146A1
公开(公告)日：2020-02-13
申请号：US16655587
申请日：2019-10-17
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：US20190203709A1
公开(公告)日：2019-07-04
申请号：US16199630
申请日：2018-11-26
Applicant: LG ELECTRONICS INC.
Inventor： Jongtae HER , Kyoungjun PARK , Junghoon PARK , Jinyong JANG , Yongkyu CHOI
CPC classification number: F04C18/0215 , F01C21/02 , F04C18/0292 , F04C23/02 , F04C29/0078 , F04C29/0085 , F04C29/02 , F04C29/023 , F04C29/047 , F04C29/12 , F04C2210/26 , F04C2240/30 , F04C2240/403 , F04C2240/50 , F04C2240/51 , F04C2240/52 , F04C2240/60 , F04C2240/603 , F04C2240/808
Abstract: A motor-operated compressor includes a casing having a sealed internal space, a first scroll fixed in the internal space, and a second scroll engaged with the first scroll to form a plurality of compression chambers. The compressor also includes a frame fixed on an opposite side of the first scroll with the second scroll interposed therebetween, and a driving motor positioned on an opposite side of the second scroll. The compressor further includes a rotary shaft coupled to the second scroll in an off-centered manner and coupled to the driving motor. The first end portion of the rotary shaft forms a fixed end supported in the radial direction by members positioned on both sides of the second scroll. The second end portion of the rotary shaft forms a free end coupled to a rotor of the driving motor.
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公开(公告)号：US20180306187A1
公开(公告)日：2018-10-25
申请号：US15817515
申请日：2017-11-20
Applicant: LG ELECTRONICS INC.
Inventor： Jungsun CHOI , Yongkyu CHOI , Cheolhwan KIM
CPC classification number: F04C18/0215 , F04C18/0246 , F04C18/0276 , F04C18/0284 , F04C23/008 , F04C29/0057 , F04C29/12 , F04C2240/30 , F04C2240/60
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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