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公开(公告)号：US20200284256A1
公开(公告)日：2020-09-10
申请号：US16811764
申请日：2020-03-06
Applicant: LG Electronics Inc.
Inventor： Seungmock LEE , Cheolhwan KIM
Abstract: Disclosed herein is a scroll compressor including a casing, a drive motor arranged in the casing, a shaft coupled to the drive motor, a main frame arranged under the drive motor, a fixed scroll arranged under the main frame, an orbiting scroll arranged between the main frame and the fixed scroll and engaged with the fixed scroll to form a compression chamber with the shaft eccentrically coupled to the orbiting scroll, a discharge cover coupled to the fixed scroll to form a closed space, a discharge port formed in the fixed scroll to connect the compression chamber and the closed space, and a discharge hole passing through the main frame and the fixed scroll, wherein an inlet and an inner portion of the discharge hole have different cross-sectional areas. The scroll compressor can reduce the noise caused by movement of the refrigerant by improving the structure of the discharge holes.
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公开(公告)号：US20190353163A1
公开(公告)日：2019-11-21
申请号：US16414110
申请日：2019-05-16
Applicant: LG Electronics Inc.
Inventor： Nayoung JEON , Taekyoung KIM , Cheolhwan KIM
Abstract: Disclosed is a scroll compressor with a refrigerant discharge flow passage and an oil recovery flow passage separated from each other to improve efficiency and reliability of the compressor. The scroll compressor includes a flow passage separation unit configured to separate an intermediate space between a drive portion and a compression portion into an inner space communicating with the refrigerant flow passage and an outer space communicating with the oil flow passage to separate the refrigerant discharge path from the oil recovery path. Accordingly, the present invention may prevent the oil from being mixed with the discharged refrigerant, thereby reducing an oil discharge amount.
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公开(公告)号：US20190078567A1
公开(公告)日：2019-03-14
申请号：US16186221
申请日：2018-11-09
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：US20180298901A1
公开(公告)日：2018-10-18
申请号：US15949890
申请日：2018-04-10
Applicant: LG ELECTRONICS INC.
Inventor： Kangwook LEE , Taekyoung KIM , Byeongchul LEE , Cheolhwan KIM
Abstract: A scroll compressor having a casing, a drive motor which is held in place within the casing and has an internal flow passage and an external flow passage to pass through, a rotation shaft which is combined with the drive motor for rotation, a frame that is provided under the drive motor and through which the rotation shaft passes for support, a first scroll which is provided under the frame and on whose one flank surface a first wrap is formed, a second scroll which is provided between the frame and the first scroll, on which a second wrap that is engaged with the first wrap is formed, with which the rotation shaft is eccentrically combined and which forms a compression chamber, and a flow passage separation unit which separates a space between the drive motor and the frame into an internal space and an external space is provided.
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公开(公告)号：US20180073507A1
公开(公告)日：2018-03-15
申请号：US15817657
申请日：2017-11-20
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu CHOI , Kangwook LEE , Cheolhwan KIM
IPC: F04C18/02
CPC classification number: F04C18/0292 , F04C18/0215 , F04C18/0261 , F04C23/008 , F04C29/12 , F04C2250/102
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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Patent Agency Ranking
公开(公告)号：US20180073506A1
公开(公告)日：2018-03-15
申请号：US15817584
申请日：2017-11-20
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu CHOI , Kangwook LEE , Cheolhwan KIM
IPC: F04C18/02
CPC classification number: F04C18/0261 , F04C18/0215 , F04C18/0292 , F04C23/008 , F04C29/12 , F04C2250/102
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：US20170306963A1
公开(公告)日：2017-10-26
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 is provided that may include a casing configured to contain oil at a lower portion thereof; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and having an oil supply passage in order to guide the oil contained in the casing to an upper side; a frame provided below the drive motor; a fixed scroll provided below the frame, arid 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 by being engaged with the fixed wrap, and having a rotational shaft coupling portion to couple the rotational shaft thereto in a penetrating manner. One or more oil dimples may be formed at a peripheral end surface positioned between an inner circumferential portion and an outer circumferential portion 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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公开(公告)号：US20170306955A1
公开(公告)日：2017-10-26
申请号：US15491051
申请日：2017-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Yongkyu CHOI , Kangwook LEE , Cheolhwan KIM , Byeongchul LEE
CPC classification number: F04C18/0269 , F04C18/0215 , F04C28/28 , F04C29/0085 , F04C29/12 , F04C2240/30 , F04C2240/60
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：US20240052839A1
公开(公告)日：2024-02-15
申请号：US18271498
申请日：2021-10-06
Applicant: LG ELECTRONICS INC.
Inventor： Seungmock LEE , Cheolhwan KIM
CPC classification number: F04C29/12 , F04C18/0215 , F04C29/06
Abstract: A scroll compressor is disclosed. A scroll compressor according to an embodiment of the present invention comprises: a compression part for discharging, to the inner space of a casing, a refrigerant compressed in a compression chamber; a discharge port for forming a flow path through which the refrigerant compressed in the compression chamber is discharged to the outside of the compression chamber; and a valve member, which has, at one end portion thereof, a root part fixed to a valve seat part of the compression part, forms a free end on the other end portion thereof, and has a head part to open/close the discharge port. A spacing part is provided between the head part of the valve member and the valve seat part to space the head part from the valve seat part in a state in which the compression part stops. Therefore, during operation of the valve member, the moving speed of the head part is reduced by means of the stiffness of the valve member so that impact force generated when the head part of the valve member collides with one surface of the compression part is reduced and impact noise generated thereby can be decreased.
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公开(公告)号：US20240052835A1
公开(公告)日：2024-02-15
申请号：US18231878
申请日：2023-08-09
Applicant: LG ELECTRONICS INC.
Inventor： Howon LEE , Cheolhwan KIM , Sangbaek PARK
CPC classification number: F04C18/0215 , F04C29/023 , F04C2240/30
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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