US 11,767,843 B2
Scroll compressor having an oil supply passage including first end open at the orbiting space and second end open at an Oldham ring
Changeol Jo, Seoul (KR); Suchul Kim, Seoul (KR); and Junghwan Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jun. 17, 2022, as Appl. No. 17/843,101.
Claims priority of application No. 10-2021-0125272 (KR), filed on Sep. 17, 2021.
Prior Publication US 2023/0107145 A1, Apr. 6, 2023
Int. Cl. F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 2/00 (2006.01); F04C 29/02 (2006.01); F04C 18/02 (2006.01); F01C 17/06 (2006.01); F04C 23/00 (2006.01)
CPC F04C 18/0215 (2013.01) [F01C 17/066 (2013.01); F04C 29/028 (2013.01); F04C 23/008 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A scroll compressor, comprising:
a casing divided into a low-pressure portion and a high-pressure portion;
a refrigerant suction pipe that communicates with the low-pressure portion of the casing;
a drive motor disposed in the low-pressure portion of the casing;
an orbiting scroll coupled to the drive motor through a rotational shaft to perform an orbiting motion;
a non-orbiting scroll engaged with the orbiting scroll to form a compression chamber, and having a suction port formed through an outer circumferential surface thereof to communicate with the compression chamber;
a main frame disposed in the low-pressure portion to support the orbiting scroll; and
an Oldham ring disposed between the main frame and the orbiting scroll, wherein the main frame comprises:
an orbiting space into which a rotational shaft coupling portion of the orbiting scroll coupled with the rotational shaft is rotatably inserted;
a scroll support that surrounds the orbiting space;
an Oldham ring support that surrounds the scroll support and communicates with the low-pressure portion; and
an oil supply passage that passes through between an inner circumferential surface and an outer circumferential surface of the scroll support, and having a first end open to communicate with the orbiting space and a second end open to communicate with the Oldham ring, the oil supply passage penetrating through or being recessed on the scroll support, wherein the Oldham ring comprises:
a ring body formed in an annular shape;
a plurality of first keys that extends from a first axial side surface of the ring body toward a first key groove disposed in the non-orbiting scroll; and
a plurality of second keys that extends from the first axial side surface of the ring body toward a second key groove disposed in the orbiting scroll, wherein at least a portion of the oil supply passage is located within a reciprocating distance of a key of the plurality of second keys that is closest to the refrigerant suction pipe in a circumferential direction, and wherein the at least the portion of the oil supply passage is located within a range of ±10° from the refrigerant suction pipe in the circumferential direction.