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公开(公告)号：US10718331B2
公开(公告)日：2020-07-21
申请号：US15506448
申请日：2015-09-02
Applicant: LG ELECTRONICS INC.
Inventor： Seokhwan Moon , Yunhi Lee , Byeongchul Lee
IPC: F04C18/356 , F04C29/02 , F04C23/00
Abstract: Disclosed is a compressor. A lubrication surface, which has the same curvature as an inner circumferential surface curvature of a cylinder and which has a predetermined circumference length, is formed on an outer circumferential surface of a roller contacting an inner circumferential surface of the cylinder. With such a configuration, since the outer circumferential surface of the roller contacting the inner circumferential surface of the cylinder come in surface-contact with each other, an oil film is formed between the roller and the cylinder with a wide area. This can reduce a frictional loss.
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12.发明授权公开(公告)号：US11971032B2
公开(公告)日：2024-04-30
申请号：US17967094
申请日：2022-10-17
Applicant: LG ELECTRONICS INC.
Inventor： Kiyoul Noh , Seokhwan Moon , Joonhong Park
IPC: F04C18/344 , F04C15/06 , F04C29/02
CPC classification number: F04C18/3441 , F04C15/064 , F04C29/023 , F04C2210/206 , F04C2240/603
Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.
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公开(公告)号：US11378079B2
公开(公告)日：2022-07-05
申请号：US17099943
申请日：2020-11-17
Applicant: LG ELECTRONICS INC.
Inventor： Seokhwan Moon , Jinung Shin , Kiyoul Noh
Abstract: A rotary compressor may include a rotational shaft; first and second bearings that support the rotational shaft in a radial direction; a cylinder disposed between the first bearing and the second bearing, and forming a compression space; a rotor forming a contact point, disposed in the compression space, and having a predetermined gap with the cylinder, and coupled to the rotational shaft to compress refrigerant according to rotation; and at least one vane slidably inserted into the rotor, and contacting an inner circumferential surface of the cylinder to separate the compression space into a plurality of regions. Each of the at least one vane may include an upper pin that extends upward, and a lower pin that extends downward, a surface of the first bearing may include a first rail groove into which the upper pin may be inserted, and a first step disposed adjacent to the first rail groove, and a surface of the second bearing may include a second rail groove into which the lower pin may be inserted, and a second step disposed adjacent to the second rail groove.
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公开(公告)号：US11346221B2
公开(公告)日：2022-05-31
申请号：US16241160
申请日：2019-01-07
Applicant: LG ELECTRONICS INC.
Inventor： Seokhwan Moon , Seoung-Min Kang , Kiyoul Noh
Abstract: A backpressure rotary compressor may include at least one vane, at least one vane slot configured to accommodate the at least one vane and provided with a pocket portion and a slide portion, and a backpressure passage provided with a backpressure inlet disposed in front of the at least one vane slot and a backpressure outlet formed in the pocket portion. The backpressure passage may perform a role of allowing a compression chamber and the pocket portion to communicate with each other. According to the backpressure passage rotary compressor, proper pressure may be supplied to an inner end of the vane, thereby reducing a mechanical loss caused by pressure occurring in a close contact portion between an outer end of the at least one vane and an inner circumferential surface of the cylinder, and achieving high efficiency in relation to driving a device.
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公开(公告)号：US11174865B2
公开(公告)日：2021-11-16
申请号：US15926254
申请日：2018-03-20
Applicant: LG ELECTRONICS INC.
Inventor： Seokhwan Moon , Seoungmin Kang , Jinung Shin
IPC: F04C23/00 , F04C18/10 , F04C29/02 , F04C18/356 , F04C15/06
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.
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Patent Agency Ranking
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
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.
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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.
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公开(公告)号：US09394904B2
公开(公告)日：2016-07-19
申请号：US14141651
申请日：2013-12-27
Applicant: LG ELECTRONICS INC.
Inventor： Seokhwan Moon , Bumdong Sa , Byeongchul Lee
CPC classification number: F04C15/0065 , F01C21/08 , F04C2/34 , F04C18/045 , F04C23/008
Abstract: A compressor is provided that may include a cylinder including an outer cylinder portion and an inner cylinder portion, and a vane portion connected between the outer cylinder portion and inner cylinder portion, which is fixed to a casing. A rolling piston may be slidably coupled to the vane portion to form an outer compression space and an inner compression space while making a turning movement between the outer cylinder portion and the inner cylinder portion. Through this, a weight of a rotating body may be reduced to obtain low power loss with respect to a same cooling power and a small bearing area, thereby reducing refrigerant leakage as well as easily changing a capacity of a cylinder in an expanded manner. Moreover, refrigerant may be discharged in opposite directions in each compression space, thereby reducing vibration noise of the compressor. In addition, a back pressure groove may be formed on an upper surface of a drive transmission portion of the rolling piston, thereby reducing a friction area between the rolling piston and the upper bearing, as well as reducing a friction loss between the rolling piston and the upper bearing due to oil filled into the back pressure groove.
Abstract translation: 提供一种压缩机，其可以包括：外筒部和内筒部;以及连接在外筒部与内筒部之间的叶片部，该叶片部固定在壳体上。 滚动活塞可以可滑动地联接到叶片部分，以在外筒部分和内筒部分之间形成转动运动的同时形成外部压缩空间和内部压缩空间。 由此，可以减小旋转体的重量，以相对于相同的冷却功率和小的轴承面积获得低的功率损失，从而减少制冷剂泄漏以及容易地以扩大的方式改变气缸的容量。 此外，制冷剂可以在每个压缩空间中以相反方向排出，从而减少压缩机的振动噪声。 此外，可以在滚动活塞的驱动传递部分的上表面上形成背压槽，从而减少滚动活塞和上轴承之间的摩擦面积，并且减少滚动活塞和滚动活塞之间的摩擦损失 上轴承由于油填入背压槽。
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公开(公告)号：US12215686B2
公开(公告)日：2025-02-04
申请号：US18381323
申请日：2023-10-18
Applicant: LG ELECTRONICS INC.
Inventor： Seokhwan Moon , Sanghun Seong , Jinyong Jang , Sooho Jang
Abstract: A scroll compressor is provided that may have a first sealing portion defined between an inner surface of an orbiting wrap and an outer surface of a non-orbiting wrap facing the inner surface of the orbiting wrap in a radial direction, and a second sealing portion defined between an inner surface of the non-orbiting wrap and an outer surface of the orbiting wrap facing the inner surface of the non-orbiting wrap in the radial direction. Further, sealing surfaces where the wraps facing each other are in surface-contact with each other may be formed on at least one of the first sealing portion or the second sealing portion. This may enlarge a sealing area between side surfaces of the wraps facing each other to suppress or prevent leakage of refrigerant suctioned in a compression chamber, thereby improving indicated efficiency and volumetric efficiency.
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公开(公告)号：US11619230B2
公开(公告)日：2023-04-04
申请号：US17502098
申请日：2021-10-15
Applicant: LG ELECTRONICS INC.
Inventor： Joonhong Park , Kiyoul Noh , Seokhwan Moon
IPC: F04C18/344 , F04C29/02 , F04C29/00 , F01C21/08
Abstract: A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots. A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.
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