公开(公告)号：US10781817B2

公开(公告)日：2020-09-22

申请号：US15830135

申请日：2017-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Kangwook Lee ,  Taekyoung Kim ,  Cheol Hwan Kim ,  Byeongchul Lee

IPC: F04C29/02 ,  F04C18/02 ,  F04C23/00

Abstract: A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.

公开(公告)号：US10767649B2

公开(公告)日：2020-09-08

申请号：US15855091

申请日：2017-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C23/00 ,  F04C18/344 ,  F01C21/10 ,  F04C27/00

Abstract: A hermetic compressor may include a cylinder having an elliptical inner circumferential surface; a roller eccentric from the inner circumferential surface; and at least one vane withdrawn towards the inner circumferential surface when the roller is rotated to divide a compression chamber. On the basis of a contact point where the inner circumferential surface and an outer circumferential surface are closest, a first center line passes through a center of the cylinder, an ellipse positioned at a first side of the first center line and forming the inner circumferential surface is a first ellipse, a center point of the first ellipse is a first center point, an ellipse positioned at a second side of the first center line and forming the inner circumferential surface is a second ellipse, a center point of the second ellipse is a second center point, and the first center point and the second center point are spaced apart from the center.

公开(公告)号：US10697455B2

公开(公告)日：2020-06-30

申请号：US15830184

申请日：2017-12-04

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.

公开(公告)号：US10605251B2

公开(公告)日：2020-03-31

申请号：US15864082

申请日：2018-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Junchul Oh ,  Byeongchul Lee ,  Seheon Choi

IPC: F04D17/12 ,  F04D27/00 ,  F04D29/041 ,  F04D29/051 ,  F04D29/28 ,  F04D29/053 ,  F04D29/42 ,  F04D29/58 ,  F04D25/06

Abstract: A turbo compressor is provided that may include an impeller housing having an impeller accommodation space, an inlet formed at a first side of the impeller accommodation space, and an outlet formed at a second side of the impeller accommodation space that communicates with the inlet; an impeller accommodated in the impeller accommodation space of the impeller housing, rotated together with a rotary shaft by being coupled to the rotary shaft, and configured to centrifugally-compress a fluid suctioned through the inlet of the impeller housing and discharge the compressed fluid outside of the impeller housing through the outlet; a back pressure space formed between a rear surface of the impeller and the impeller housing; a back pressure passage connected between the outlet of the impeller housing and the back pressure space; and a back pressure control valve installed between the back pressure passage and the back pressure space, and configured to selectively open and close a region therebetween.

公开(公告)号：US10527039B2

公开(公告)日：2020-01-07

申请号：US15372762

申请日：2016-12-08

Applicant: LG ELECTRONICS INC.

Inventor： Jaesang Lee ,  Sanghun Seong ,  Byeongchul Lee

IPC: F04C18/02

Abstract: A scroll compressor is provided that may include a communication hole that penetrates from a side surface of a non-orbiting scroll adjacent to a discharge side to a thrust bearing surface between the non-orbiting scroll and an orbiting scroll, and a decompression member having a radial sectional area smaller than a radial sectional area of the communication hole and inserted into the communication hole. A refrigerant discharged to a discharge space may be introduced to a suction space through the passage between the communication hole and the decompression member, thereby preventing a high vacuum state of a compression chamber, and a refrigerant passing through the communication hole may be decompressed during a normal operation to restrain leakage of the refrigerant to the thrust bearing surface between the non-orbiting scroll and the orbiting scroll, thus increasing compression efficiency.

公开(公告)号：US10473102B2

公开(公告)日：2019-11-12

申请号：US15417486

申请日：2017-01-27

Applicant: LG ELECTRONICS INC.

Inventor： Yunhi Lee ,  Seoungmin Kang ,  Jinung Shin ,  Seokhwan Moon ,  Byeongchul Lee

IPC: F04C18/356 ,  F01C21/08 ,  F04C27/00 ,  F04C29/00 ,  F04C23/00

Abstract: A compressor is provided in which an outer circumferential side cross-sectional area of a vane slot is formed smaller than an inner circumferential side cross-sectional area thereof to decrease an area receiving a force in a roller direction by a vane to reduce a contact force between the roller and the vane, and a gas accommodation portion selectively forming a suction pressure and an intermediate pressure is formed between the vane and the vane slot to control the contact force. A contact surface of the vane facing the roller is formed at a side of a compression chamber to reduce the contact force, and a space forming a discharge pressure is formed at at least either one side of a side surface of the vane and a cylinder to decrease a side directional reaction force applied to the vane, thereby reducing a friction between the vane and the cylinder.

公开(公告)号：US10443489B2

公开(公告)日：2019-10-15

申请号：US15382859

申请日：2016-12-19

Applicant: LG ELECTRONICS INC.

Inventor： Byeonghun Yu ,  Yunhi Lee ,  Changeon Lee ,  Byeongchul Lee ,  Kamgyu Lee

IPC: F02B55/08 ,  F02B53/04 ,  F01C1/22 ,  F01C19/02 ,  F02B53/00

Abstract: A rotary engine including a housing having therein N lobe accommodating portions (N is a natural number equal to or greater than 3), and combustion chambers communicating with the lobe accommodating portions, respectively, a rotor having N−1 lobes eccentrically rotating centering on a center of the lobe accommodating portions, and consecutively accommodated in the respective lobe accommodating portions during the eccentric rotation, and combustion controllers provided at both sides of each combustion chamber, and configured to limit a combustion range of mixed gas.

公开(公告)号：US20190024664A1

公开(公告)日：2019-01-24

申请号：US15830290

申请日：2017-12-04

Applicant: LG Electronics Inc.

Inventor： Cheol Hwan Kim ,  Kangwook Lee ,  Byeongchul Lee ,  Yong Kyu Choi

IPC: F04C29/02 ,  F04C18/02

CPC classification number: F04C29/025 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/0057 ,  F04C29/023 ,  F04C2240/30 ,  F04C2240/50 ,  F04C2240/60

Abstract: A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion. The scroll compressor may include a casing in which oil is stored in an oil storage chamber formed at a lower portion of the casing, a drive motor provided in an inner space of the casing, a rotary shaft coupled to the drive motor and including an oil supply path configured to guide the oil stored in the oil storage chamber and at least one oil hole that passes from the oil supply path to an outer circumferential surface of the rotary shall a main frame coupled to the rotary shaft and provided under the drive motor, a fixed scroll coupled to the rotary shaft and provided under the main frame, and an orbiting scroll provided between the main frame and the fixed scroll, into which the rotary shaft is inserted and to which the rotary shaft is eccentrically coupled, the orbiting scroll performing an orbiting movement to form a compression chamber with the fixed scroll. The oil guided upward through the oil supply path may be discharged through the at least one oil hole and supplied to the outer circumferential surface of the rotary shaft.

公开(公告)号：US20180223844A1

公开(公告)日：2018-08-09

申请号：US15876304

申请日：2018-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F04C18/344 ,  F04C29/12 ,  F04C27/00

Abstract: A hermetic compressor is provided that may include a vane that is inserted into a roller, rotates with the roller, and is pushed out toward an inner circumference of a cylinder by rotation of the roller to divide the compression chamber into a plurality of spaces. The vane may include a body having a sealing surface that contacts the inner circumference of the cylinder and inserted into the roller; and a guide that extends from an axial end of the body in a direction crossing a direction the vane slides out, and that is slidably inserted into a guide groove formed on at least one of the first bearing or the second bearing to restrain the vane from sliding out of the roller toward the inner circumference of the cylinder.

公开(公告)号：US09920759B2

公开(公告)日：2018-03-20

申请号：US14590229

申请日：2015-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Sanghun Sung ,  Jaesang Lee ,  Kitae Jang ,  Inho Won ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C28/26 ,  F04C27/00 ,  F04C29/12 ,  F04C23/00

CPC classification number: F04C18/0215 ,  F04C18/0261 ,  F04C23/008 ,  F04C29/126

Abstract: A scroll compressor is provided that may include a casing; a discharge cover fixed to an inner space of the casing, that divides the inner space of the case into a suction space and a discharge space; a main frame in the casing, and spaced from the discharge cover; an orbital scroll that performs an orbital motion on the main frame; a non-orbital scroll coupled to the main frame so as to be movable up and down with respect to the orbital scroll, that forms a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the orbital scroll; and a back pressure plate provided between the discharge cover and the non-orbital scroll, that forms a back pressure chamber that communicates with the intermediate pressure chamber. With such a configuration, a bypass valve may be easily installed, and application of an overload minimized.