US 12,013,040 B2
Sliding components
Hiroshi Suzuki, Tokyo (JP); Tadatsugu Imura, Tokyo (JP); Iwa Ou, Tokyo (JP); and Yuichiro Tokunaga, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., (JP)
Appl. No. 17/429,896
Filed by Eagle Industry Co., Ltd., Tokyo (JP)
PCT Filed Feb. 19, 2020, PCT No. PCT/JP2020/006421
§ 371(c)(1), (2) Date Aug. 10, 2021,
PCT Pub. No. WO2020/171102, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 2019-029626 (JP), filed on Feb. 21, 2019.
Prior Publication US 2022/0099138 A1, Mar. 31, 2022
Int. Cl. F16J 15/34 (2006.01); F16J 15/3256 (2016.01)
CPC F16J 15/3424 (2013.01) [F16J 15/3416 (2013.01); F16J 15/3256 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A pair of sliding components configured for use in a relative rotating manner in a rotary machine between a sealed liquid side and a gas side, the pair of sliding components each having an annular shape with an inner radial side and an outer radial side thereof,
wherein the pair of sliding components comprise a first sliding component and a second sliding component,
the sliding surface of the first sliding component is provided with a dynamic pressure generation groove which communicates with a gas side in a radial direction and which is configured to generate a dynamic pressure between the sliding surfaces of the first and second sliding components by the gas during a running of the rotary machine,
at least one of the sliding surfaces of the first and second sliding components is provided with a groove which extends in a circumferential direction,
the groove is disposed on the gas side with respect to a closed end of the dynamic pressure generation groove,
the groove is formed so as to coil up one or more times in the circumferential direction, and
a bottom surface of the groove continuously extends in the circumferential direction over an entire radial.