US 12,215,685 B2
Scroll compressor
Jinyong Jang, Seoul (KR); Sanghun Seong, Seoul (KR); Seokhwan Moon, Seoul (KR); and Sooho Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Oct. 10, 2023, as Appl. No. 18/378,203.
Claims priority of application No. 10-2022-0146159 (KR), filed on Nov. 4, 2022.
Prior Publication US 2024/0151227 A1, May 9, 2024
Int. Cl. F04C 18/02 (2006.01); F04C 23/00 (2006.01); F04C 28/24 (2006.01); F04C 28/26 (2006.01); F04C 29/00 (2006.01); F04C 29/12 (2006.01)
CPC F04C 18/0215 (2013.01) [F04C 18/0292 (2013.01); F04C 23/008 (2013.01); F04C 28/24 (2013.01); F04C 29/0028 (2013.01); F04C 29/0035 (2013.01); F04C 29/126 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A scroll compressor, comprising:
a casing having a low-pressure portion and a high-pressure portion;
an orbiting scroll coupled to a rotary shaft in the low-pressure portion of the casing to perform an orbiting motion;
a non-orbiting scroll engaged with the orbiting scroll to form compression chambers and movable relative to the orbiting scroll in an axial direction of the scroll compressor;
a back pressure chamber assembly disposed at a rear surface of the non-orbiting scroll to form a back pressure chamber;
a first back pressure valve disposed between a first compression chamber of the compression chambers and the back pressure chamber to allow movement of a refrigerant from the first compression chamber to the back pressure chamber while blocking reverse movement of the refrigerant; and
a second back pressure valve disposed between the back pressure chamber and a second compression chamber of the compressor chambers and spaced apart from the first back pressure valve, to allow movement of the refrigerant from the back pressure chamber to the second compression chamber while blocking reverse movement of the refrigerant, wherein the first back pressure valve provides communication with the first compression chamber having a relatively lower pressure than a pressure of the second compression chamber, the second back pressure valve providing communication with the second compression chamber, and wherein the second back pressure valve is disposed at a position within a range in which the second compression chamber executes a discharge stroke.