公开(公告)号：US11920590B2

公开(公告)日：2024-03-05

申请号：US17874485

申请日：2022-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C28/28 ,  F04C29/00 ,  F04C29/12

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.

公开(公告)号：US11668303B2

公开(公告)日：2023-06-06

申请号：US16693467

申请日：2019-11-25

Applicant: LG ELECTRONICS INC.

Inventor： Jungsun Choi ,  Howon Lee ,  Cheolhwan Kim

IPC: F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C18/02 ,  F01C21/10 ,  F04C23/00 ,  F04C29/02

CPC classification number: F04C18/0269 ,  F01C21/102 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/023 ,  F04C29/025 ,  F04C2240/603 ,  F05C2201/02 ,  F05C2201/021 ,  F05C2201/0439

Abstract: A scroll compressor is provided that may include a casing; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and rotated together with the rotor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the fixed wrap. In a state in which a center of the fixed scroll and a center of the orbiting scroll are substantially the same, an interval between the fixed wrap and the orbiting wrap gradually increases towards the suction chamber from the discharge chamber.

公开(公告)号：US11598337B2

公开(公告)日：2023-03-07

申请号：US16926042

申请日：2020-07-10

Applicant: LG Electronics Inc.

Inventor： Jungsun Choi ,  Cheolhwan Kim ,  Sangbaek Park

IPC: F04C18/02 ,  F01C1/02 ,  F04C23/00 ,  F04C27/00

Abstract: A compressor, more particularly, a scroll compressor provides structures that may enhance centrifugal stiffness at a contact point between a fixed scroll and an orbiting scroll. The compressor may include an orbiting scroll having an orbiting scroll wrap wound around a radial-direction inner area from a radial-direction outer area; and a fixed scroll having a fixed scroll wrap wound around the radial-direction inner area from the radial-direction outer area. A surfacing part may be configured to narrow a distance between the orbiting scroll wrap and the fixed scroll wrap may be formed in a predetermined section of the orbiting scroll or fixed scroll wrap.

公开(公告)号：US11441562B2

公开(公告)日：2022-09-13

申请号：US16811764

申请日：2020-03-06

Applicant: LG Electronics Inc.

Inventor： Seungmock Lee ,  Cheolhwan Kim

IPC: F04C15/06 ,  F04C18/02 ,  F04C29/06 ,  F04C29/12 ,  F04C23/00

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.

公开(公告)号：US11408426B2

公开(公告)日：2022-08-09

申请号：US16788966

申请日：2020-02-12

Applicant: LG Electronics Inc.

Inventor： Nayoung Jeon ,  Taekyoung Kim ,  Cheolhwan Kim

IPC: F04C29/02 ,  F04C18/02

Abstract: A compressor include a casing, a drive unit including a stator and a rotor accommodated in the stator, a rotation shaft coupled to the rotor and configured to be rotated by the rotor, a compression unit that is coupled to the rotation shaft, that is lubricated with the oil, and that is configured to compress and discharge the refrigerant, and an oil-separator that is disposed between the discharge part and the drive unit and that is configured to separate the oil from the refrigerant and guide the refrigerant to the discharge part. The oil-separator includes a centrifugal separator configured to rotate together with the rotation shaft and configured to generate a centrifugal force to separate the oil from the refrigerant, and a coupler coupled to the rotor or the rotation shaft and configured to rotate the centrifugal separator based on rotation of the rotating shaft.

公开(公告)号：US11408423B2

公开(公告)日：2022-08-09

申请号：US16655587

申请日：2019-10-17

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C28/28 ,  F01C1/02 ,  F04C23/00 ,  F04C29/00 ,  F04C29/12

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.

公开(公告)号：US11384771B2

公开(公告)日：2022-07-12

申请号：US16668815

申请日：2019-10-30

Applicant: LG Electronics Inc.

Inventor： Kangwook Lee ,  Nayoung Jeon ,  Cheolhwan Kim

IPC: F04D29/12 ,  F04D29/10 ,  F04D29/063 ,  F04D5/00 ,  F04D29/049 ,  F16J15/34 ,  F04D29/62 ,  F04D31/00 ,  F04D29/046 ,  F04D29/08

Abstract: There is disclosed a compressor comprising a case comprising a discharging part provided one side and configured to discharge a refrigerant, the case defining a predetermined space for storing oil; a drive part comprising a rotor coupled to an inner circumferential surface of the case and having coils wound there around and configured to generate a rotation magnetic field, and a rotor mounted in the rotor and configured to be rotatable by the rotation magnetic field; a shaft extending in a state of being coupled to the rotor; a compression part lubricated by the oil in a state of being coupled to the shaft and configured to compress and discharge the refrigerant; and a sealing part extending from the stator towards the compression part and configured to induce the winding of the coil.

公开(公告)号：US11353026B2

公开(公告)日：2022-06-07

申请号：US16790247

申请日：2020-02-13

Applicant: LG Electronics Inc.

Inventor： Jungsun Choi ,  Sangbaek Park ,  Cheolhwan Kim

IPC: F04C29/02 ,  F04C18/02 ,  F04C29/06 ,  F04C28/26 ,  F04C28/28

Abstract: Disclosed is a compressor including a compressing assembly having a decompressing structure to control an amount of oil. The decompressing structure is oriented in parallel with a length direction of the rotation shaft or in a direction toward a discharger from which the refrigerant is discharged.

公开(公告)号：US11293442B2

公开(公告)日：2022-04-05

申请号：US16378653

申请日：2019-04-09

Applicant: LG ELECTRONICS INC.

Inventor： Nayoung Jeon ,  Taekyoung Kim ,  Cheolhwan Kim

IPC: F04C29/12 ,  F04C18/02 ,  F04C23/00 ,  F04C29/00 ,  F04C29/06

Abstract: A scroll compressor may include a first scroll and a second scroll orbiting relative to the first scroll to form compression chambers, a discharge port provided in the first scroll to discharge refrigerant compressed in the compression chamber, a discharge passage formed through the first discharged through the discharge to an upper side of the frame, and a discharge cover coupled to the first scroll and having a space to accommodate end portions of the discharge port and the discharge passage to guide the refrigerant discharged through the discharge port to the discharge passage. A volume of a discharge space defined in the space by the first scroll may be 4.5 or more, obtained by dividing a volume of the discharge space by a total volume of an initial compression chamber among the compression chambers.

公开(公告)号：US11187230B2

公开(公告)日：2021-11-30

申请号：US15949890

申请日：2018-04-10

Applicant: LG ELECTRONICS INC.

Inventor： Kangwook Lee ,  Taekyoung Kim ,  Byeongchul Lee ,  Cheolhwan Kim

IPC: F04C29/02 ,  F04C18/02 ,  F04C29/00 ,  F04C29/12 ,  F04C23/00

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.