US 12,117,002 B2
Scroll compressor having oil supply groove in communication with oil supply hole defined from oil passage to rotating shaft surface
Honghee Park, Seoul (KR); Jaesang Lee, Seoul (KR); Byeonghun Yu, 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, 2023, as Appl. No. 18/149,973.
Claims priority of application No. 10-2022-0066272 (KR), filed on May 30, 2022.
Prior Publication US 2023/0383747 A1, Nov. 30, 2023
Int. Cl. F04C 2/00 (2006.01); F04C 2/02 (2006.01); F04C 15/00 (2006.01); F04C 18/00 (2006.01); F04C 29/02 (2006.01); F04C 23/00 (2006.01)
CPC F04C 2/025 (2013.01) [F04C 15/0088 (2013.01); F04C 29/023 (2013.01); F04C 23/008 (2013.01); F04C 2240/603 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A scroll compressor comprising:
a main frame defining a bearing hole that extends therethrough in an axial direction;
a non-orbiting scroll disposed at the main frame;
an orbiting scroll configured to engage the non-orbiting scroll and define compression chambers together with the non-orbiting scroll based on the orbiting scroll orbiting; and
a rotating shaft including a main bearing surface portion that is inserted through the bearing hole of the main frame and supported in a radial direction, the rotating shaft being coupled to the orbiting scroll and configured to transmit rotational force,
wherein the rotating shaft comprises:
an oil passage defined through opposite ends of the rotating shaft in the axial direction,
an oil supply hole defined between the oil passage and an outer circumferential surface of the rotating shaft and extending toward the bearing hole of the main frame, and
a plurality of oil supply grooves being in fluid communication with the oil supply hole and defined along the outer circumferential surface of the rotating shaft at the main bearing surface portion, at least some of the plurality of oil supply grooves being spaced apart from each other on a same axis,
wherein the plurality of oil supply grooves comprise:
a first oil supply groove having a first end being connected to the oil supply hole and a second end being located higher than the first end of the first oil supply groove,
a second oil supply groove having a first end being spaced apart from the oil supply hole and a second end being located higher than the first end of the second oil supply groove, and
a communication groove that is defined between the first oil supply groove and the second oil supply groove along the outer circumferential surface of the rotating shaft and that has a first end and a second end spaced apart from each other along the outer circumferential surface of the rotating shaft,
wherein the first end of the communication groove is connected to the second end of the first oil supply groove, and
wherein the second end of the communication groove is connected to the first end of the second oil supply groove.