US 12,092,109 B2
Scroll compressor
Sanghun Seong, Seoul (KR); Seokhwan Moon, Seoul (KR); Jinyong Jang, Seoul (KR); and Sooho Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jan. 4, 2024, as Appl. No. 18/404,022.
Claims priority of application No. 10-2023-0004879 (KR), filed on Jan. 12, 2023.
Prior Publication US 2024/0240637 A1, Jul. 18, 2024
Int. Cl. F04C 28/06 (2006.01); F04C 18/02 (2006.01); F04C 29/12 (2006.01)
CPC F04C 28/065 (2013.01) [F04C 18/0215 (2013.01); F04C 29/128 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A scroll compressor, comprising:
a casing having a hermetic inner space divided into a low-pressure portion and a high-pressure portion;
an orbiting scroll coupled to a rotary shaft in the inner space of the casing to perform an orbiting motion;
a non-orbiting scroll forming compression chambers, each having a suction pressure chamber, an intermediate pressure chamber, and a discharge pressure chamber, together with the orbiting scroll;
a back pressure chamber assembly coupled to the non-orbiting scroll to form a back pressure chamber;
a first variable-capacity unit configured to vary a compression capacity by selectively providing communication between a first intermediate pressure chamber having a first pressure, of the intermediate pressure chambers, and the low-pressure portion; and
a second variable-capacity unit configured to vary the compression capacity by selectively providing communication between a second intermediate pressure chamber having a second pressure higher than the first pressure, of the intermediate pressure chambers, and the low-pressure portion, wherein the first variable-capacity unit comprises a first variable-capacity passage that communicates with the first intermediate pressure chamber, at least one first variable-capacity valve that opens and closes the first variable-capacity passage, and a first variable-capacity opening and closing valve for that controls opening and closing of the at least one first variable-capacity valve, and the second variable-capacity unit comprises a second variable-capacity passage that communicates with the second intermediate pressure chamber, at least one second variable-capacity valve that opens and closes the second variable-capacity passage, and a second variable-capacity opening and closing valve that controls opening and closing of the at least one second variable-capacity valve.