US 11,867,175 B2
Scroll compressor
Taekyoung Kim, Seoul (KR); Sungyong Ahn, Seoul (KR); Junghoon Park, Seoul (KR); and Jaeha Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Nov. 23, 2022, as Appl. No. 17/993,417.
Claims priority of application No. 10-2021-0169212 (KR), filed on Nov. 30, 2021.
Prior Publication US 2023/0167820 A1, Jun. 1, 2023
Int. Cl. F04C 29/02 (2006.01); F04C 18/02 (2006.01); F04C 29/12 (2006.01)
CPC F04C 18/0215 (2013.01) [F04C 18/0261 (2013.01); F04C 29/12 (2013.01); F04C 2210/206 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A scroll compressor comprising:
a casing that defines an oil storage space;
a fixed scroll disposed inside the casing;
an orbiting scroll disposed at a first side of the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll, wherein the orbiting scroll and the fixed scroll are configured to define a compression chamber therebetween;
a discharge cover coupled to a second side of the fixed scroll opposite to the first side of the fixed scroll, the discharge cover having a cover bottom surface; and
an oil feeder that is coupled to the cover bottom surface and faces opposite to the fixed scroll, the oil feeder being in fluid communication with the oil storage space,
wherein at least a portion of the cover bottom surface is disposed within an inner space surrounded by an inner circumferential surface of the oil feeder and defines a discharge hole in fluid communication with the inner space of the oil feeder.
 
12. A scroll compressor comprising:
a casing that defines an oil storage space;
a fixed scroll disposed inside the casing;
an orbiting scroll disposed at a first side of the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll, wherein the orbiting scroll and the fixed scroll define a compression chamber therebetween; and
a main frame disposed opposite to the fixed scroll with the orbiting scroll being disposed between the main frame and the fixed scroll,
wherein at least one of the main frame or the fixed scroll defines a gas drain hole configured to guide gas in the oil storage space to thereby discharge the gas out of the casing,
wherein the gas drain hole comprises:
an upper communication portion that passes through an upper surface of the main frame,
a lower communication portion that is in fluid communication with the oil storage space and configured to guide the gas in the oil storage space to the upper communication portion, and
a middle communication portion that extends through an upper portion of the main frame in a direction crossing the upper communication portion, the middle communication portion connecting the lower communication portion to the upper communication portion.
 
16. A scroll compressor comprising:
a casing that defines an oil storage space;
a fixed scroll disposed inside the casing;
an orbiting scroll disposed at a first side of the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll, wherein the orbiting scroll and the fixed scroll define a compression chamber therebetween;
a main frame disposed opposite to the fixed scroll with the orbiting scroll being disposed between the main frame and the fixed scroll; and
a discharge cover coupled to a second side of the fixed scroll opposite to the first side of the fixed scroll,
wherein at least one of the main frame or the fixed scroll defines a gas drain hole configured to guide gas in the oil storage space to thereby discharge the gas out of the casing,
wherein the discharge cover comprises:
a cover bottom surface that defines a discharge hole in fluid communication with the oil storage space, and
a cover side portion that extends from the cover bottom surface toward the fixed scroll and that is coupled to a lower surface of the fixed scroll, and
wherein the discharge cover has a discharge space that is defined by the lower surface of the fixed scroll, the cover bottom surface, and the cover side portion.