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.

公开(公告)号：USRE50022E1

公开(公告)日：2024-06-25

申请号：US17720972

申请日：2022-04-14

Applicant: LG Electronics Inc.

Inventor： Jinung Shin ,  Seokhwan Moon ,  Kiyoul Noh

IPC: F04C18/344 ,  F04C29/00

CPC classification number: F04C18/344 ,  F04C18/3441 ,  F04C18/3442 ,  F04C29/005

Abstract: A rotary compressor includes a cylinder that is coupled to an inner space of a casing and that defines a compression space, a first bearing and a second bearing located at upper and lower sides of the cylinder, a roller disposed eccentrically with respect to an inner circumferential surface of the cylinder to vary a volume of the compression space based on rotation, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner circumferential surface of the cylinder during the rotation of the roller to partition the compression space into a plurality of compression chambers. A suction passage communicating with the compression space is defined in the first bearing or the second bearing, and a suction port communicating between the suction passage and the compression space is defined on a side surface of the cylinder.

公开(公告)号：US12018686B2

公开(公告)日：2024-06-25

申请号：US17864599

申请日：2022-07-14

Applicant: LG ELECTRONICS INC.

Inventor： Jinung Shin ,  SeSeok Seol ,  Sedong Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/344 ,  F04C29/12 ,  F04C23/00

CPC classification number: F04C18/3445 ,  F04C18/3442 ,  F04C29/124 ,  F04C23/008 ,  F04C2210/26 ,  F04C2240/50 ,  F04C2250/101

Abstract: A rotary compressor is provided that may include a cylinder having an inner peripheral surface; a roller; and a plurality of vanes slidably inserted into the plurality of vane slots to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers. The cylinder may further include a suction flow path for refrigerant that may include a suction port that communicates with the compression space to suction the refrigerant in a lateral direction, and a suction passage disposed in a direction that crosses the suction port to provide communication between the compression space and the suction port.

公开(公告)号：US11873814B2

公开(公告)日：2024-01-16

申请号：US17624388

申请日：2020-07-01

Applicant: Gebr. Becker GmbH

Inventor： Stefan Beierlein ,  Sven Hilfert

IPC: F04C18/344 ,  F04C28/28 ,  F04C25/02

CPC classification number: F04C18/3441 ,  F04C28/28 ,  F04C25/02 ,  F04C2240/81 ,  F04C2270/165 ,  F04C2270/80

Abstract: The invention relates to a rotary slide assembly and to a method for monitoring the wear of one or more slides in a rotary slide assembly, comprising a rotary slide rotor and one or more slide receiving areas for the slide(s) in the rotary slide rotor. The wear state of the one or more slides is detected during the operation or during a standstill of the rotary slide assembly. For this purpose, the slide(s) or one or more corresponding slide receiving areas in interaction with the one or more slides are used to generate or request an electric or electronic signal.

公开(公告)号：US11754071B2

公开(公告)日：2023-09-12

申请号：US17499313

申请日：2021-10-12

Applicant: LG Electronics Inc.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C15/06 ,  F04C23/00 ,  F04C18/10 ,  F04C29/02 ,  F04C18/356 ,  F04C18/344

CPC classification number: F04C15/06 ,  F04C18/10 ,  F04C18/3562 ,  F04C18/3564 ,  F04C23/008 ,  F04C29/023 ,  F04C18/344 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2240/50

Abstract: A hermetic compressor includes a casing, a cylinder in the casing, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located at an eccentric position with respect to an inner surface of the cylinder and configured to vary a volume of the compression space, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner surface of the cylinder to divide the compression space into compression chambers. An inlet port in communication with the compression space is defined in the first bearing, and an intermediate plate is located between the cylinder and the inlet port and defines a suction passage connected to the inlet port, where a peripheral length of an inner peripheral surface of the suction passage is greater than a peripheral length of an outer peripheral surface of the suction passage.

公开(公告)号：US20230131102A1

公开(公告)日：2023-04-27

申请号：US17961672

申请日：2022-10-07

Applicant: LG ELECTRONICS INC.

Inventor： Sedong LEE ,  Seoungmin KANG ,  Joonhong PARK

IPC: F04C18/356 ,  F04C18/344 ,  F04C29/12

Abstract: A rotary compressor may include an outflow passage through which refrigerant flows out of a compression space. The outflow passage may include at least one first outflow guide portion disposed in a main bearing or a sub bearing, at least one second outflow guide portion formed through between both axial ends of a roller, and at least one third outflow guide portion disposed in a bearing opposite to the bearing with the at least one first outflow guide portion based on the roller, to communicate with the at least one first outflow guide portion through the at least one second outflow guide portion. This may minimize an amount of refrigerant remaining in the compression space, thereby enhancing compression efficiency. A pressure difference on a front of a vane may also be eliminated, which may suppress or prevent vane jumping, thereby reducing wear of the vane or cylinder. As the outflow passage is periodically opened, refrigerant leakage may be suppressed or prevented during a compression stroke, thereby preventing under-compression.

公开(公告)号：US11480178B2

公开(公告)日：2022-10-25

申请号：US16780371

申请日：2020-02-03

Applicant: Mark W. Wood

Inventor： Mark W. Wood

IPC: F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/344 ,  F04C23/00 ,  F04C27/00 ,  F04C29/12 ,  F04C15/06

Abstract: A multistage compressor system with intercooler can include a sealed housing with first and second compressor stages, where the first compressor stage is for receiving refrigerant from outside of the sealed housing, and the second compressor stage is for receiving refrigerant from within the sealed housing. The compressor system can also include a crank for mechanically driving the first compressor stage and/or the second compressor stage, and a heat exchanger outside of the sealed housing for receiving refrigerant from the first compressor stage and exchanging heat with the refrigerant. The compressor system can further include an oil reservoir contained by the sealed housing, where the oil reservoir includes oil for lubricating the crank, receives the refrigerant from the heat exchanger, and exchanges heat with the refrigerant to cool the oil in the oil reservoir, and where the refrigerant can be supplied to the second compressor stage.

公开(公告)号：US11454240B2

公开(公告)日：2022-09-27

申请号：US17057730

申请日：2018-12-12

Applicant: Gree Electric Appliances, Inc. of Zhuhai

Inventor： Yusheng Hu ,  Huijun Wei ,  Jia Xu ,  Fayou Luo ,  Pengkai Wan ,  Fei Wu ,  Rongting Zhang ,  Zhiming Wen

IPC: F01C21/04 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C29/02 ,  F04C18/344

Abstract: A pump body assembly and a compressor are provided. The pump body includes: a spindle, wherein the spindle has a sliding vane chute, a back pressure oil cavity being at least a part of an oil passage is located at a tail end of the sliding vane chute, an oil outlet of the back pressure oil cavity is located at the top of the back pressure oil cavity, and a position of the oil inlet of the back pressure oil cavity is lower than that of an oil outlet of the back pressure oil cavity such that a lubrication medium enters the back pressure oil cavity through the oil inlet of the back pressure oil cavity and fills up the back pressure oil cavity and flows out from the top of the back pressure oil cavity.

公开(公告)号：US11448216B2

公开(公告)日：2022-09-20

申请号：US17177683

申请日：2021-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C23/00 ,  F04C18/344 ,  F04C18/356 ,  F04C29/00

Abstract: A rotary compressor is provided that may include a rotational shaft including at least one protrusion formed on an outer peripheral surface, first and second bearings configured to support the rotational shaft in a radial direction, a cylinder disposed between the first and second bearings to form a compression space, a rotor disposed in the compression space and coupled to the rotational shaft to compress a refrigerant as the rotor rotates, and at least one vane slidably inserted into the rotor, the at least one vane coming into contact with an inner peripheral surface of the cylinder to separate the compression space into a plurality of regions. The rotor may include at least one groove which is formed on an inner peripheral surface and faces the at least one protrusion.

公开(公告)号：US11448215B2

公开(公告)日：2022-09-20

申请号：US17120573

申请日：2020-12-14

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C15/00 ,  F04C18/344 ,  F01C21/08 ,  F04C27/00 ,  F04C29/12 ,  F04C23/00

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.