US 12,429,087 B2
Journal foil air bearing for preventing separation of top foil
Kyeong Su Kim, Daejeon (KR)
Appl. No. 18/566,717
Filed by TNE KOREA CO., LTD., Cheongju-si (KR)
PCT Filed Jun. 16, 2022, PCT No. PCT/KR2022/008572
§ 371(c)(1), (2) Date Dec. 4, 2023,
PCT Pub. No. WO2022/265440, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 10-2021-0078943 (KR), filed on Jun. 17, 2021.
Prior Publication US 2024/0271658 A1, Aug. 15, 2024
Int. Cl. F16C 17/02 (2006.01)
CPC F16C 17/024 (2013.01) [F16C 2226/50 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A journal foil air bearing for supporting a load applied along a radial direction of a rotating shaft rotating about a centerline, the journal foil air bearing comprising:
a first top foil disposed to face an outer circumferential surface of the rotating shaft and surround the rotating shaft;
a second top foil disposed to surround the first top foil;
a bump foil provided as an elastically deformable member and disposed to surround the second top foil;
a base foil disposed to surround the bump foil; and
at least one separation preventer provided on the first top foil to restrain the first top foil from being separated along a longitudinal direction of the rotating shaft,
wherein the separation preventer protrudes a preset length toward the second top foil and is restrained by the second top foil from moving in the longitudinal direction of the rotating shaft, and
wherein the separation preventer does not protrude beyond an outer circumferential surface of the base foil and is not in contact with the base foil and the bump foil.