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公开(公告)号：EP4345343A3
公开(公告)日：2024-06-19
申请号：EP24157883.0
申请日：2020-07-10
发明人： INOUE, Hiroki , NEGISHI, Yuta , ONUMA, Minori , OU, Iwa , IMURA, Tadatsugu , SUZUKI, Hiroshi
CPC分类号： F16C33/107 , F16C17/045 , F16J15/3412 , F16J15/3416
摘要： A sliding component having excellent lubricity and a high recovery rate of a sealed fluid is provided. In a mechanical seal 1 as a sliding component in which a plurality of spiral grooves 7 serving as a plurality of dynamic pressure generation grooves extending from a low pressure side L to a high pressure side H are formed on a sliding surface S1 of a stationary seal ring 4 serving as any one sliding member in the mechanical seal 1, the sliding surface S1 is provided with an annular groove 9 serving as a recessed portion extending in a circumferential direction and opened to the low pressure side L and the annular groove 9 communicates with the spiral groove 7.
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公开(公告)号：EP4345342A3
公开(公告)日：2024-06-19
申请号：EP24157861.6
申请日：2020-07-10
发明人： INOUE, Hiroki , NEGISHI, Yuta , ONUMA, Minori , OU, Iwa , IMURA, Tadatsugu , SUZUKI, Hiroshi
CPC分类号： F16C33/107 , F16C17/045 , F16J15/3412 , F16J15/3416
摘要： A sliding component having excellent lubricity and a high recovery rate of a sealed fluid is provided. In a mechanical seal 1 as a sliding component in which a plurality of spiral grooves 7 serving as a plurality of dynamic pressure generation grooves extending from a low pressure side L to a high pressure side H are formed on a sliding surface S1 of a stationary seal ring 4 serving as any one sliding member in the mechanical seal 1, the sliding surface S1 is provided with an annular groove 9 serving as a recessed portion extending in a circumferential direction and opened to the low pressure side L and the annular groove 9 communicates with the spiral groove 7.
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公开(公告)号：EP4224040A1
公开(公告)日：2023-08-09
申请号：EP21875392.9
申请日：2021-09-24
IPC分类号： F16J15/34
摘要： A sliding component capable of improving lubricity between sliding surfaces is provided. In a sliding component 10 which is disposed at a relatively rotating position of a rotary machine and relatively slides on a counter sliding component 20, a sliding surface 11 of the sliding component 10 is provided with a plurality of protrusions 30. A groove 14 is formed between the adjacent protrusions 30 so as to be continuous from a sealing side S1 to a leakage side S2.
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公开(公告)号：EP4177486A1
公开(公告)日：2023-05-10
申请号：EP21837221.7
申请日：2021-07-01
摘要： Provided is a sliding component capable of stably reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component 7 has a sliding surface 7a relatively sliding with eccentric rotation, in which the sliding surface 7a includes a land 79 and a plurality of dynamic pressure generation mechanisms 70 arranged in a circumferential direction, the dynamic pressure generation mechanism 70 includes a shallow groove portion 71 and a deep groove portion 72, and the shallow groove portion 71 surrounds a circumference of the deep groove portion 72 and communicates with the deep groove portion 72.
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公开(公告)号：EP4102111A1
公开(公告)日：2022-12-14
申请号：EP20929917.1
申请日：2020-04-07
IPC分类号： F16J15/34
摘要： [Problem] To provide a pair of sliding components that slide relative to each other on a sliding surface, with which high sealability and low sliding torque can be realized even if used over a broad range of rotation speeds and regardless of the direction of rotation.
[Solution] A pair of sliding components that slide relative to each other on a sliding surface. At least one sliding surface S comprises a dimple group 14 in which a plurality of dimples 12 are arranged, each dimple having an opening with a long axis L and a short axis K that are orthogonal to each other. In the dimple group 14, the dimples 12 are arranged so as to form a curve having a curvature which differs from the curvature of the circumference of the sliding surface S.-
公开(公告)号：EP4345328A3
公开(公告)日：2024-07-17
申请号：EP24157823.6
申请日：2020-01-31
发明人： SUZUKI, Hiroshi
CPC分类号： F16J15/3412 , F16C17/045 , F16C33/741 , F16C33/107 , F16C33/1065 , F16C33/106
摘要： There is provided a sliding component that supplies a sealed fluid to a leakage side in a gap between sliding surfaces to exhibit high lubricity and has a small leakage of the sealed fluid. A sliding component 10 that has an annular shape and is disposed in a place where relative rotation is performed in a rotary machine, includes a plurality of dynamic pressure generating mechanisms 14 provided in a sliding surface 11 of the sliding component 10, each of the dynamic pressure generating mechanisms 14 including a deep groove portion 15 that communicates with a leakage side, and a plurality of shallow groove portions 9A that communicate with the deep groove portion 15 and are arranged in a circumferential direction in parallel relationship to each other.
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公开(公告)号：EP4317728A3
公开(公告)日：2024-04-10
申请号：EP23216949.0
申请日：2020-02-19
发明人： SUZUKI, Hiroshi , IMURA, Tadatsugu , OU, Iwa , TOKUNAGA, Yuichiro
摘要： There are provided sliding components capable of quickly shifting to a non-contact state by a gas at high-speed rotation. A pair of sliding components 20, 10 are disposed at a relatively rotating position at the time of running a rotary machine and formed in an annular shape in which a sealed liquid F is present on one side of an inner radial side and an outer radial side and a gas A is present on the remaining side thereof. A sliding surface 21 of a sliding component 20 is provided with a dynamic pressure generation groove 23 which communicates with the side of a gas A in a radial direction and which is configured to generate a dynamic pressure between the sliding surfaces 21 by the gas A at the time of running the rotary machine. A sliding surface of a sliding component 10 is provided with a groove 13 which extends in a circumferential direction.
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公开(公告)号：EP4102113A1
公开(公告)日：2022-12-14
申请号：EP20930551.5
申请日：2020-04-07
IPC分类号： F16J15/34
摘要： [Problem] To provide a pair of sliding components that slide relative to each other on a sliding surface and can achieve high sealing performance and low sliding torque in a wide rotation speed range.
[Solution] In a pair of sliding members 3 and 5 that slide relative to each other on a sliding surface S, at least one sliding surface S is provided with a dimple group 60 formed by arranging dimples 11 each having an opening 11a having a shape with a major axis L and a short axis K perpendicular to each other in a radial direction and a circumferential direction, and a dimple angle θ formed between the major axis L and a radial axis r passing through an intersection G between the major axis L and the short axis K of the dimple 11 and a center C of the sliding surface S changes in at least one among the radial direction and the circumferential direction of the sliding surface S.-
公开(公告)号：EP3901497A1
公开(公告)日：2021-10-27
申请号：EP19899646.4
申请日：2019-12-19
IPC分类号： F16J15/34
摘要： There is provided a sliding component capable of securing a groove unprocessed section having a size capable of stably holding a fluid film while sufficiently securing lubricity of a sliding surface. A sliding surface S of an annular sliding component disposed at a relatively rotating position of a rotating machine is provided with a plurality of dynamic pressure generating groove groups 20 arranged in a circumferential direction, each including a plurality of dynamic pressure generating grooves G having a start point 21 opening to one radial edge of the sliding surface S and an end point 22 closing within the sliding surface S while extending circumferentially, in the circumferential direction and dynamic pressure generating grooves G2 to 16 provided between the dynamic pressure generating grooves located at both ends the dynamic pressure generating groove groups are formed to be longer than the dynamic pressure generating grooves G1 and 17 located at the both ends of the dynamic pressure generating groove group 20 in the circumferential direction.
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公开(公告)号：EP4394215A1
公开(公告)日：2024-07-03
申请号：EP22861290.9
申请日：2022-08-22
发明人： TOKUNAGA, Yuichiro , HOSOE, Takeshi , KATORI, Hikaru , MAKISHIMA, So , NEGISHI, Yuta , MAETANI, Yuki , ONUMA, Minori , MIYAZAKI, Sayaka , SUZUKI, Hiroshi
摘要： There is provided a sliding component that allows easy introduction-in or out of a fluid between a groove and a communicating space. In a sliding component 10 in which a pair of sliding rings 10 and 20 rotate relative to each other and which partitions a sealed fluid side space S1and a leakage side space S2 off from each other, a groove 13 opening to one of the spaces S1 and S2 is provided on a sliding surface 11 of the sliding ring 10, and an inclined surface 6 that faces a fluid space S10 formed between the groove 13 of the sliding ring 10 and the sliding ring 20 and that is expanded toward one of the spaces S1 and S2 is provided at an edge portion 10e of at least one of the sliding rings 10 and 20 on the side of the groove 13.
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