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公开(公告)号：US20220106980A1
公开(公告)日：2022-04-07
申请号：US17428262
申请日：2020-02-12
发明人： Tadatsugu IMURA , Hiroshi SUZUKI , Iwa OU , Yuichiro TOKUNAGA
摘要： To provide sliding components capable of suppressing dynamic pressure generation mechanisms from being deformed and damaged due to wear of sliding surfaces. In a pair of sliding components which is disposed at a relatively rotating position of a rotary machine, has a plurality of dynamic pressure generation mechanisms formed in a sliding surface of the sliding component by recessed portions, and is formed in an annular shape to seal a sealed fluid by sliding the sliding surfaces of the sliding components. A surface region in the periphery of the recessed portions of the sliding component is formed to be separated from an opposite region of the sliding component.
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公开(公告)号：US20210355992A1
公开(公告)日：2021-11-18
申请号：US17277282
申请日：2019-10-11
发明人： Yuichiro TOKUNAGA
IPC分类号： F16C17/10
摘要： A pair of sliding members sliding relative to each other at sliding faces is configured such that at least one of the sliding faces (S) includes a negative pressure generation mechanism (41) surrounded by a land portion and a branched portion (42) arranged in the sliding face S and branched from the negative pressure generation mechanism (41). The sliding members can be formed compact and is applicable to equipment for rotation in both directions, while sliding torque reduction and sealing function improvement can be realized.
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公开(公告)号：US20210054936A1
公开(公告)日：2021-02-25
申请号：US16497436
申请日：2018-03-27
发明人： Yuichiro TOKUNAGA , Hideyuki INOUE , Wataru KIMURA , Tetsuya IGUCHI , Hidetoshi KASAHARA , Jun HIROMATSU , Yasuhiro KUROKI , Ryu KIKUCHI
IPC分类号： F16J15/44
摘要： In an exemplary embodiment, a seal device (10) that seals between a housing (11) and a rotation shaft (20) passing through the housing (11) includes: a floating ring (15) arranged with a gap h with respect to the rotation shaft (20), a seal portion (14) formed by bringing one end face of the floating ring (15) into contact with the housing (11), and a space portion j provided between the floating ring (15) and the housing (11), and the floating ring (15) includes bias means that contactlessly biases the floating ring (15) to the seal portion via the space portion j. The seal device in which the floating ring follows movement of the rotation shaft is capable of exerting a sealing operation so that vibration of the rotation shaft can be reduced.
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公开(公告)号：US20210054935A1
公开(公告)日：2021-02-25
申请号：US16475641
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 sliding relatively to each other. One sliding part is a stationary-side seal ring 7, and the other sliding part is a rotating-side seal ring 4, wherein the seal rings have sliding faces S formed radially for sealing a liquid or a misty fluid as a sealed fluid against leakage. At least one of the sliding faces S is provided with: spiral grooves 11 which have upstream ends 11a connected to a leakage side, and downstream ends 11b not connected to a circumferential edge on a sealed-fluid side, and are disposed at an angle from upstream to downstream; and discharge grooves 10 disposed at an angle such that their upstream ends 10a are located on the leakage side and their downstream ends 10b are located on the sealed-fluid side.
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公开(公告)号：US20200011425A1
公开(公告)日：2020-01-09
申请号：US16483682
申请日：2018-02-21
发明人： Yuichiro TOKUNAGA , Hideyuki INOUE , Wataru KIMURA , Tetsuya IGUCHI , Hidetoshi KASAHARA , Jun HIROMATSU , Yasuhiro KUROKI , Ryu KIKUCHI
IPC分类号： F16J15/34
摘要： In an exemplary embodiment, a seal device 10 for sealing between a housing 11 and a rotating shaft 20 which penetrates through the housing 11 includes a floating ring 15 arranged on the rotating shaft 20 with a gap h therebetween, and is provided with a spiral foil 14 arranged between the floating ring 15 and the housing 11. In the seal device, the floating ring exhibits a sealing action by following the movement of the rotating shaft and can damp vibration of the rotating shaft.
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公开(公告)号：US20180223996A1
公开(公告)日：2018-08-09
申请号：US15939253
申请日：2018-03-28
发明人： Yuichiro TOKUNAGA
CPC分类号： F16J15/3412 , F16J15/164 , F16J15/3448 , F16J15/36
摘要： To prevent leakage regardless of the level of differential pressure between the inner periphery and outer periphery of the sealing face, the sliding component has dimples provided on one sealing face of a pair of sliding parts that mutually slide relative to each other, and grooves with directionality are provided in a cavitation formation area in each dimple.
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公开(公告)号：US20180106377A1
公开(公告)日：2018-04-19
申请号：US15842862
申请日：2017-12-14
发明人： Hideyuki INOUE , Takeshi HOSOE , Yuta NEGISHI , Yuichiro TOKUNAGA
CPC分类号： F16J15/342 , F16J15/162 , F16J15/3412
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：US20150377297A1
公开(公告)日：2015-12-31
申请号：US14439192
申请日：2014-03-11
CPC分类号： F16C33/748 , F16C17/026 , F16J15/3412 , F16J15/3416 , F16J15/342
摘要： A positive pressure generation mechanism includes a positive pressure generation groove provided on a high pressure side of one of sealing faces of a pair of sliding parts including annular bodies that relatively slide on each other, a negative pressure generation mechanism including a negative pressure generation groove provided on a low pressure side, a pressure release groove provided between the positive pressure generation groove and the negative pressure generation groove, and a radial groove that provides communication between the positive pressure generation groove.
摘要翻译： 正压力产生机构包括：正压生成槽，设置在包括相对滑动的环状体的一对滑动部的一个密封面的高压侧;负压产生机构，包括负压产生槽， 在低压侧，设置在正压力产生槽和负压产生槽之间的压力释放槽以及提供正压力产生槽之间的连通的径向槽。
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公开(公告)号：US20240344561A1
公开(公告)日：2024-10-17
申请号：US18685177
申请日：2022-08-22
发明人： Yuichiro TOKUNAGA , Takeshi HOSOE , Hikaru KATORI
CPC分类号： F16C33/107 , F16C17/045 , F16J15/3412
摘要： There is provided a sliding component capable of discharging contamination into a gap between sliding surfaces. In a sliding component which is disposed at a relative rotational location of a rotating machine to slide relative to another sliding component. The sliding component has a sliding surface provided with a fluid inlet groove communicating with at least one of a sealed fluid side space and a leakage side space and a dynamic pressure generation groove communicating with the fluid inlet groove and extending in a circumferential direction. Both side edges and a terminating end edge of the dynamic pressure generation groove are curvedly continuous with each other in a plan view.
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公开(公告)号：US20230383845A1
公开(公告)日：2023-11-30
申请号：US18027600
申请日：2021-09-24
IPC分类号： F16J15/34
CPC分类号： F16J15/3416
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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