Scroll compressor having an oil supply passage including first end open at the orbiting space and second end open at an Oldham ring

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 main frame;
• and
• a plurality of second keys that extends from a second axial side surface of the ring body toward a second key groove disposed in the orbiting scroll, wherein the oil supply passage penetrates through the main frame such that the second end of the oil supply passage communicates with a radial inner surface of the first key groove that is closest to the refrigerant suction pipe in a circumferential direction, and wherein at least a portion of the oil supply passage is located within a range of ±10° from the refrigerant suction pipe in a circumferential direction.