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公开(公告)号：EP4141275A1
公开(公告)日：2023-03-01
申请号：EP21793420.7
申请日：2021-04-02
发明人： NEGISHI, Yuta , MAETANI, Yuki , INOUE, Hiroki , UCHIYAMA, Ryosuke , ONUMA, Minori , YAMAGUCHI, Gai , MAKISHIMA, So , MATSUMOTO, Osamu , TAKIGAHIRA, Yoshiaki , WATANABE, Koji
摘要： Provided is a pair of sliding components capable of suppressing wear between sliding surfaces from the start of a relative rotation to a high-speed rotation and suppressing a leakage of a sealing target fluid. A sliding surface 21 of a second sliding component 20 is provided with a plurality of second positive pressure generation grooves 24 communicating with a leakage side space S1, extending in a relative rotation direction of the second sliding component 20, and having closed terminating end portions 24B, a sliding surface 11 of a first sliding component 10 is provided with a plurality of first positive pressure generation grooves 14 communicating with the leakage side space S1, extending in a relative rotation direction of the second sliding component 20, and having closed terminating end portions 14B, and the sliding surface 11 and the sliding surface 21 slide on each other at least in such a manner that the first positive pressure generation grooves 14 and the second positive pressure generation grooves 24 overlap and intersect with each other.
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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：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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公开(公告)号：EP4394213A1
公开(公告)日：2024-07-03
申请号：EP22861046.5
申请日：2022-07-27
发明人： YAMAGUCHI, Gai , UCHIYAMA, Ryosuke , TSUKAMOTO, Takahiro , MAETANI, Yuki , MIYAZAKI, Sayaka , INOUE, Hiroki , ONUMA, Minori , NEGISHI, Yuta
IPC分类号： F16J15/34
CPC分类号： F16J15/34
摘要： There are provided a pair of sliding components capable of suppressing wear between sliding surfaces from the start of relative rotation to high-speed rotation, and suppressing a leakage of a sealed fluid. A sliding surface 11 of a first sliding component 10 and a sliding surface 21 of a second sliding component 20 slide against each other in an intersecting manner such that first positive pressure generation grooves 14 and 15 and second positive pressure generation grooves 24 at least partially overlap each other. The first positive pressure generation grooves 14 and 15 include at least one groove 15 that differs in a position of a terminating end portion from other grooves 14. The one groove 15 includes a terminating end portion 15B located closer to a sealed fluid space S2 side than a terminating end portions 14B of the other grooves 14 and terminating end portions 24B of the second positive pressure generation grooves 24.
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公开(公告)号：EP4310337A1
公开(公告)日：2024-01-24
申请号：EP22771166.0
申请日：2022-03-07
发明人： NEGISHI, Yuta , UCHIYAMA, Ryosuke , YAMAGUCHI, Gai , MAETANI, Yuki , TSUKAMOTO, Takahiro , MATSUMOTO, Osamu , MIYAZAKI, Sayaka , INOUE, Hiroki , ONUMA, Minori , MAKISHIMA, So
摘要： A shaft sealing device capable of maintaining high lubricity between sliding surfaces is provided. Communication paths 10k and 13 communicating with an external space are connected to a drive space A and a fluid in the drive space A introduced between a pair of sliding surfaces 31s and 32s by a fluid introduction mechanism 40 is replenished from an external space through the communication paths 10k and 13.
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