公开(公告)号：US20230137074A1

公开(公告)日：2023-05-04

申请号：US17881883

申请日：2022-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Seoungmin KANG ,  Jinung SHIN

IPC: F04C18/344 ,  F04C29/12

Abstract: A rotary compressor may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller having at least one vane slot and a back pressure chamber, and at least one vane. The roller may include at least one spring insertion groove formed in an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot, and a vane spring that supports a rear surface of the vane toward an inner circumferential surface of the cylinder may be disposed in the at least one spring insertion groove. Accordingly, elastic force may be supplied to the rear surface of the vane, to suppress or prevent trembling of the vane caused while the vane passes through a proximal portion during operation.

公开(公告)号：US20210363991A1

公开(公告)日：2021-11-25

申请号：US17177683

申请日：2021-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Seoungmin KANG ,  Jinung SHIN

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

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：US20200158111A1

公开(公告)日：2020-05-21

申请号：US16541260

申请日：2019-08-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Kiyoul NOH ,  Seokhwan MOON

IPC: F04C18/344

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.

公开(公告)号：US20200149531A1

公开(公告)日：2020-05-14

申请号：US16528716

申请日：2019-08-01

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Seoungmin KANG ,  Seheon CHOI

IPC: F04C18/344

Abstract: A vane rotary compressor has a cylinder. A main bearing and a sub bearing are coupled to the cylinder forming a compression space. The main and sub bearing each have a back pressure pocket on a surface facing the cylinder. The main bearing and the sub bearing radially support a rotation shaft. A roller coupled to the shaft is disposed within the compression space. The roller has circumferentially spaced vane slots, each vane slot extending from an open end on an outer circumferential surface of the roller to a back pressure chamber disposed within the roller at an opposite end of each vane slot. A plurality of vanes slide within the vane slots and divide the compression space into compression chambers. At least one of the back pressure chambers in the vane slots fluidly communicates with at least one of the back pressure pockets in the main and sub bearings.