US 12,404,936 B2
Sliding component
Tadatsugu Imura, Tokyo (JP); Hiroshi Suzuki, Tokyo (JP); Shogo Fukuda, Tokyo (JP); and Kenta Uchida, Tokyo (JP)
Assigned to EAGLE INDUSRY CO., LTD., Tokyo (JP)
Appl. No. 18/695,302
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Sep. 14, 2022, PCT No. PCT/JP2022/034390
§ 371(c)(1), (2) Date Mar. 25, 2024,
PCT Pub. No. WO2023/053964, PCT Pub. Date Apr. 6, 2023.
Claims priority of application No. 2021-158356 (JP), filed on Sep. 28, 2021.
Prior Publication US 2025/0003497 A1, Jan. 2, 2025
Int. Cl. F16J 15/34 (2006.01)
CPC F16J 15/3416 (2013.01) [F16J 15/3412 (2013.01); F16J 15/342 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A sliding component, comprising
a pair of sliding surfaces for being disposed in a rotating machine to face each other at a location where the pair of sliding surfaces rotate relative to each other when the rotating machine is driven, and partitioning a fluid-side space and a leakage-side space off from each other,
wherein one of the sliding surfaces is provided with:
a fluid-side groove which has an opened end portion communicating with the fluid-side space and a closed end portion opposed to the opened end portion in a radial direction and which extends from the opened end portion to the closed end portion in a forward direction of relative rotation of the sliding surfaces;
a fluid-side reverse groove which has an opened end portion communicating with the fluid-side space and a closed end portion opposed to the opened end portion in a radial direction and which extends from the opened end portion to the closed end portion in a reverse direction of the relative rotation;
a leakage-side groove of which at least one end portion is disposed closer to a side of the leakage-side space than the fluid-side groove and the fluid-side reverse groove, and which extends from the end portion toward the fluid-side space in the forward direction of the relative rotation;
a leakage-side reverse groove of which at least one end portion is disposed closer to the side of the leakage-side space than the fluid-side groove and the fluid-side reverse groove, and which extends from the end portion toward the fluid-side space in the reverse direction of the relative rotation; and
a deep groove that partitions a fluid-side region where the fluid-side groove and the fluid-side reverse groove are provided and a leakage-side region where the leakage-side groove and the leakage-side reverse groove are provided off from each other, and
the fluid-side reverse groove is disposed on a downstream side in the forward direction of relative rotation with respect to the fluid-side groove in the fluid-side region.