US 12,421,948 B2
Variable displacement swash plate type compressor
Se Young Song, Daejeon (KR); Kwang Jin Kim, Daejeon (KR); Ok Hyun Kim, Daejeon (KR); Dong Hyuk Chang, Daejeon (KR); and Ki Sang Hong, Daejeon (KR)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 18/249,278
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Sep. 29, 2021, PCT No. PCT/KR2021/013340
§ 371(c)(1), (2) Date Apr. 17, 2023,
PCT Pub. No. WO2022/080714, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 10-2020-0134456 (KR), filed on Oct. 16, 2020.
Prior Publication US 2023/0392588 A1, Dec. 7, 2023
Int. Cl. F04B 27/10 (2006.01); F04B 27/18 (2006.01)
CPC F04B 27/109 (2013.01) [F04B 27/1063 (2013.01); F04B 27/1081 (2013.01); F04B 27/18 (2013.01); F04B 27/1054 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A variable displacement swash plate type compressor comprising:
a front housing and a rear housing;
a cylinder block coupled between the front housing and the rear housing;
a drive shaft rotatably installed in the front housing and the cylinder block;
a rotor coupled to the drive shaft to rotate with the drive shaft;
a swash plate slidably coupled to the rotor and installed on the drive shaft such that an inclination angle thereof is adjustable;
a sealing member installed between the drive shaft and the front housing to seal between the drive shaft and the front housing;
a plurality of flow grooves formed in an inner wall surface of the front housing, an oil flowing through the plurality of flow grooves;
a connection groove formed in the inner wall surface of the front housing and connecting the plurality of flow grooves;
at least one or more oil supply holes configured to connect the connection groove and a seal region in which the sealing member is installed to supply the oil to the seal region; and
a race disposed on the inner wall surface of the front housing to cover the connection groove to form an oil chamber in communication with the at least one or more oil supply holes wherein both ends of the connection groove are blocked by boundary portions to prevent flow of the oil,
and further comprising:
a circulation groove formed in the inner wall surface of the front housing to circulate the oil, wherein the boundary portions are disposed between the connection groove and the circulation groove, and the oil leaking between the inner wall surface of the front housing and the race is stored in the circulation groove.