US 12,313,073 B2
Rotary compressor
Seseok Seol, Seoul (KR); Yunhi Lee, Seoul (KR); and Seoungmin Kang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Mar. 26, 2024, as Appl. No. 18/616,519.
Claims priority of application No. 10-2023-0047706 (KR), filed on Apr. 11, 2023.
Prior Publication US 2024/0344518 A1, Oct. 17, 2024
Int. Cl. F04C 18/22 (2006.01); F04C 18/34 (2006.01); F04C 18/344 (2006.01); F04C 18/356 (2006.01); F04C 29/06 (2006.01)
CPC F04C 29/06 (2013.01) [F04C 18/22 (2013.01); F04C 18/344 (2013.01); F04C 18/356 (2013.01); F04C 2210/261 (2013.01); F04C 2210/268 (2013.01); F04C 2240/30 (2013.01); F04C 2240/50 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A rotary compressor, comprising:
a casing;
a cylinder fixed inside of the casing to define a compression space;
a main bearing and a sub bearing respectively disposed on both sides of the cylinder in an axial direction;
a rotational shaft supported on the main bearing and the sub bearing;
a roller disposed on the rotational shaft to be rotatable, and forming at least one contact point at which an outer circumferential surface thereof is in contact with an inner circumferential surface of the cylinder; and
at least one vane slidably inserted into the roller, and having a front end surface brought into contact with the inner circumferential surface of the cylinder to divide the compression space into a plurality of compression chambers, wherein the cylinder comprises at least one elastic deformation unit configured to absorb an impact with the at least one vane, wherein each of the at least one elastic deformation unit comprises:
a space portion formed between an outer circumferential surface of the cylinder and the inner circumferential surface of the cylinder; and
an elastic portion that connects inner ends of the space portion and defines the inner circumferential surface of the cylinder, and at least a portion of an outer circumferential surface of the elastic portion is formed in an arcuate shape in a circumferential direction.
 
17. A rotary compressor, comprising:
a casing;
a cylinder fixed inside of the casing to define a compression space;
a main bearing and a sub bearing respectively disposed on both sides of the cylinder in an axial direction;
a rotational shaft supported on the main bearing and the sub bearing;
a roller disposed on the rotational shaft to be rotatable, and forming at least one contact point at which an outer circumferential surface thereof is in contact with an inner circumferential surface of the cylinder; and
at least one vane slidably inserted into the roller, and having a front end surface brought into contact with the inner circumferential surface of the cylinder to divide the compression space into a plurality of compression chambers, wherein the cylinder comprises at least one elastic deformation unit configured to absorb an impact with the at least one vane, and wherein each of the at least one elastic deformation unit comprises:
a space portion in the form of an opening or at least one groove between an outer circumferential surface of the cylinder and the inner circumferential surface of the cylinder; and
an elastic portion disposed adjacent to the opening or the at least one groove, extending in a circumferential direction, and forming the inner circumferential surface of the cylinder, wherein at least a portion of an outer circumferential surface of the elastic portion is formed in an arcuate shape in the circumferential direction.