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公开(公告)号：US12018757B2
公开(公告)日：2024-06-25
申请号：US17420660
申请日：2019-12-06
发明人： Hiroshi Suzuki , Yuichiro Tokunaga , Yuta Negishi , Hiroki Inoue , Shogo Fukuda , Wataru Kimura
CPC分类号： F16J15/3416 , F16C17/045
摘要： A sliding surface of the sliding component is provided with a communication groove having a start point communicating with a sealed fluid side in a radial direction, a storage groove communicating with the communication groove, and a plurality of dynamic pressure generation grooves generating a dynamic pressure at end points thereof upon a run of the rotating machine and the dynamic pressure generation grooves are located on a side of the sealed fluid side space with respect to the storage groove in the radial direction.
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公开(公告)号：US11994216B2
公开(公告)日：2024-05-28
申请号：US17908699
申请日：2020-04-07
发明人： Hiroshi Suzuki , Yuichiro Tokunaga
IPC分类号： F16J15/34
CPC分类号： F16J15/3412
摘要： A sliding component includes a pair of sliding members being slidable relative to each other on sliding surfaces of the sliding members. In the sliding component, one of the sliding surfaces includes a dimple group in which a plurality of dimples is arranged. Each of the dimple has an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. In the dimple group, the dimples are arranged along a curve having a curvature different from a curvature of a circumference of the one of the sliding surfaces.
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公开(公告)号：US11821521B2
公开(公告)日：2023-11-21
申请号：US17413466
申请日：2019-12-19
IPC分类号： F16J15/34
CPC分类号： F16J15/342 , F16J15/3412
摘要： A sliding surface 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 arranged in a circumferential direction, each including a plurality of dynamic pressure generating grooves having a start point opening to one radial edge of the sliding surface S and an end point closing within the sliding surface while extending circumferentially, in the circumferential direction.
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公开(公告)号：US11248707B2
公开(公告)日：2022-02-15
申请号：US16610855
申请日：2018-05-15
发明人： Tadatsugu Imura , Ayano Tanishima , Hideyuki Inoue , Yuichiro Tokunaga , Takeshi Hosoe , Yuta Negishi , Yuki Maetani
摘要： In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least one of the sliding surfaces, sliding surface S, includes a random dimple group 11 in which plural dimples 10 are randomly arranged, and the random dimple group 11 is arranged to be biased in the circumferential direction of the sliding surface S. The sliding components have an improved lubricating property and reliability of a sealing property.
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公开(公告)号：US11143232B2
公开(公告)日：2021-10-12
申请号：US16349209
申请日：2017-11-14
发明人： Yuta Negishi , Sayaka Kosugi , Hiroki Inoue , Hideyuki Inoue , Takeshi Hosoe , Yuichiro Tokunaga
摘要： In an exemplary embodiment of a sliding component, a sliding face S is provided with a first fluid-side negative pressure generation mechanism 12 including a first negative pressure generation groove 13, and is provided with a second fluid-side negative pressure generation mechanism 14 including second negative pressure generation grooves 15 located on the second-fluid side of the first fluid-side negative pressure generation mechanism 12, and is further provided with a dynamic pressure generation mechanism 10 including dynamic pressure generation grooves 11 on at least one of the first-fluid side and the second-fluid side of the first fluid-side negative pressure generation mechanism 12 and the second fluid-side negative pressure generation mechanism 14, and the first negative pressure generation groove 13 is isolated from the second-fluid side by a land R, and the second negative pressure generation grooves 15 are isolated from the first-fluid side by a land R.
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公开(公告)号：US11009072B2
公开(公告)日：2021-05-18
申请号：US16480278
申请日：2018-01-15
发明人： Wataru Kimura , Yuichiro Tokunaga , Yuta Negishi , Takeshi Hosoe , Hideyuki Inoue , Tetsuya Iguchi
摘要： In an exemplary embodiment, a sliding component includes a pair of sliding parts 4 and 7 sliding relatively to each other and having sliding faces S formed radially for sealing a liquid or a misty fluid as a sealed fluid against leakage. One sliding part is a stationary-side seal ring 7, and the other sliding part is a rotating-side seal ring 4. At least one of the sliding faces S is provided with positive pressure generation mechanisms 11 having positive pressure generation grooves 12 configured to communicate with a circumferential edge of the sliding face S on the sealed-fluid side and not to communicate with a circumferential edge on the leakage side, and discharge grooves 10 disposed at an angle such that upstream ends are located on the leakage side and downstream ends are located on the sealed-fluid side.
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公开(公告)号：US10883603B2
公开(公告)日：2021-01-05
申请号：US15842855
申请日：2017-12-14
发明人： Hideyuki Inoue , Takeshi Hosoe , Yuta Negishi , Yuichiro Tokunaga
摘要： In an embodiment, a sliding part is provided with a mechanism to generate dynamic pressure by means of relative sliding of a pair of sealing faces of the sliding part, which is characterized in that one sealing face is provided with a land 10 for generating dynamic pressure facing the high-pressure fluid side and a seal area 11 facing the low-pressure fluid side, wherein the land 10 and seal area 11 are positioned away from each other in the radial direction and the areas of the sealing face other than the land 10 and seal area 11 are formed lower than these areas to constitute fluid communication paths 12. The fluid entering the grooves for generating dynamic pressure formed on the sealing face is allowed to circulate.
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公开(公告)号：US10781924B2
公开(公告)日：2020-09-22
申请号：US15842859
申请日：2017-12-14
发明人： Hideyuki Inoue , Takeshi Hosoe , Yuta Negishi , Yuichiro Tokunaga
摘要： In an embodiment, a sliding part is provided with a mechanism to generate dynamic pressure by means of relative sliding of a pair of sealing faces of the sliding part, which is characterized in that one sealing face is provided with a land 10 for generating dynamic pressure facing the high-pressure fluid side and a seal area 11 facing the low-pressure fluid side, wherein the land 10 and seal area 11 are positioned away from each other in the radial direction and the areas of the sealing face other than the land 10 and seal area 11 are formed lower than these areas to constitute fluid communication paths 12. The fluid entering the grooves for generating dynamic pressure formed on the sealing face is allowed to circulate.
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公开(公告)号：US10344867B2
公开(公告)日：2019-07-09
申请号：US15505571
申请日：2015-08-26
发明人： Masatoshi Itadani , Kazumasa Sungawa , Yuichiro Tokunaga , Hideyuki Inoue , Takeshi Hosoe , Ryoma Yamakawa , Yuta Negishi , Kenji Kiryu , Keiichi Chiba , Akira Yoshino , Hiroshi Kubota
摘要： In an embodiments, a slide component includes a pair of slide parts that relatively slide on each other, one of the slide parts being provided in a sealing face with fluid circulation grooves 10 that communicate with a high-pressure fluid side via inlet portions and outlet portions and are separated from a low-pressure fluid side by land portions, the other of the slide parts being circumferentially provided in a sealing face with a plurality of interference grooves 15, 16, 17, 20 for producing pressure variations in a fluid in the fluid circulation grooves 10, adjacent ones of the interference grooves 15, 16, 17, 20 being set to have different shapes.
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公开(公告)号：US10337620B2
公开(公告)日：2019-07-02
申请号：US15573118
申请日：2016-05-13
发明人： Yuichiro Tokunaga , Hideyuki Inoue , Wataru Kimura , Tetsuya Iguchi , Keiichi Chiba , Masatoshi Itadani , Hikaru Katori
摘要： In an embodiment, a sliding component includes a pair of sliding parts (a stationary-side seal ring 7 and a rotating-side seal ring 4) that relatively slide on each other and each have a sliding face S formed radially for sealing sealed fluid from leaking. The sliding face S of at least one sliding part is provided with dynamic pressure generation grooves 10 spaced in a non-communicating manner from the sealed-fluid side and the leakage side by lands R of both sliding faces, and is provided with fluid introduction holes 11 between leakage-side ends 10a of the grooves 10 and the leakage side, for communicating the grooves 10 and the leakage side. Each fluid introduction holes 11 is configured such that a dynamic-pressure-generation-groove-side opening 11a open to a corresponding one of the grooves 10 is axially displaced from a leakage-side opening 11b open to the leakage side.
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