公开(公告)号：US11499555B2

公开(公告)日：2022-11-15

申请号：US16734679

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul Noh ,  Seokhwan Moon ,  Joonhong Park

IPC: F04C18/344 ,  F04C29/02 ,  F04C15/06

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.

公开(公告)号：US11428224B2

公开(公告)日：2022-08-30

申请号：US16528716

申请日：2019-08-01

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seoungmin Kang ,  Seheon Choi

IPC: F04C18/344 ,  F04C29/02 ,  F01C21/08

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.

公开(公告)号：US20200277956A1

公开(公告)日：2020-09-03

申请号：US16734679

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Seokhwan Moon ,  Joonhong Park

IPC: F04C18/344 ,  F04C15/06

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.