公开(公告)号：EP3816488A1

公开(公告)日：2021-05-05

申请号：EP19803635.2

申请日：2019-05-16

申请人： Eagle Industry Co., Ltd.

发明人： KIMURA, Wataru ,  TOKUNAGA, Yuichiro ,  TAKIGAHIRA, Yoshiaki ,  KONO, Toru ,  KASAHARA, Hidetoshi ,  HIROMATSU, Jun ,  OTA, Takafumi

IPC分类号： F16J15/18

摘要： Provided is a seal ring configured so that a fluid film can be formed between sliding surfaces across a wide range of rotation speed and configured with high lubricity. A seal ring 1 for sealing a clearance between a rotary shaft 2 and a housing 3 includes, dynamic pressure grooves 12 formed at a sliding surface S1 of the seal ring 1 and having positive pressure generators 121 and negative pressure generators 122, and static pressure supply paths 13 formed at the sliding surface S1 of the seal ring 1 to extend from an inner diameter side to an outer diameter side and to open on a sealed fluid side. Each of the positive pressure generators 121, each of the negative pressure generators 122, and each of the static pressure supply paths 13 are arranged in description order in a circumferential direction of the sliding surface S1.

公开(公告)号：EP3816489A1

公开(公告)日：2021-05-05

申请号：EP19803913.3

申请日：2019-05-16

申请人： Eagle Industry Co., Ltd.

发明人： KIMURA, Wataru ,  TOKUNAGA, Yuichiro ,  TAKIGAHIRA, Yoshiaki ,  KONO, Toru ,  KASAHARA, Hidetoshi ,  HIROMATSU, Jun ,  OTA, Takafumi

IPC分类号： F16J15/18 ,  F16J15/324 ,  F16J15/3272

摘要： Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring 1 for sealing a clearance between a rotary shaft 2 and a housing 3 includes inclined grooves 15 formed at a sliding surface S1 so as to be arranged in a circumferential direction, the inclined grooves 15 being open on an outer diameter side of the seal ring 1 to generate a drawing pressure. The seal ring 1 further includes supply grooves 13 being open on a sealed fluid side of the seal ring 1 and extending in a radially outward direction toward inner diameter sides of the inclined grooves 15.

公开(公告)号：EP3816490A1

公开(公告)日：2021-05-05

申请号：EP19804266.5

申请日：2019-05-16

申请人： Eagle Industry Co., Ltd.

发明人： KIMURA, Wataru ,  TOKUNAGA, Yuichiro ,  TAKIGAHIRA, Yoshiaki ,  KONO, Toru ,  KASAHARA, Hidetoshi ,  HIROMATSU, Jun ,  OTA, Takafumi

IPC分类号： F16J15/18

摘要： Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring 1 for sealing a clearance between a rotary shaft 2 and a housing 3 includes multiple static pressure grooves 13 provided at a sliding surface S1 of the seal ring 1 and arranged in a circumferential direction, the static pressure grooves 13 being opened on a sealed fluid side and closed on an outer diameter side, a circumferential length of each of the static pressure grooves 13 being shorter than a radial length of each of the static pressure grooves 13.

公开(公告)号：EP3299685B1

公开(公告)日：2020-02-19

申请号：EP16796412.1

申请日：2016-05-13

申请人： Eagle Industry Co., Ltd.

发明人： TOKUNAGA, Yuichiro ,  INOUE, Hideyuki ,  KIMURA, Wataru ,  IGUCHI, Tetsuya ,  HOSOE, Takeshi ,  KASAHARA, Hidetoshi ,  OTA, Takafumi ,  CHIBA, Keiichi ,  ITADANI, Masatoshi ,  KATORI, Hikaru

IPC分类号： F16J15/34 ,  F02B39/00 ,  F16J15/08 ,  F16J15/40 ,  F16J15/3244

公开(公告)号：EP3299685A1

公开(公告)日：2018-03-28

申请号：EP16796412.1

申请日：2016-05-13

申请人： Eagle Industry Co., Ltd.

发明人： TOKUNAGA, Yuichiro ,  INOUE, Hideyuki ,  KIMURA, Wataru ,  IGUCHI, Tetsuya ,  HOSOE, Takeshi ,  KASAHARA, Hidetoshi ,  OTA, Takafumi ,  CHIBA, Keiichi ,  ITADANI, Masatoshi ,  KATORI, Hikaru

IPC分类号： F16J15/34 ,  F02B39/00 ,  F16J15/08

摘要： Sealing faces are subjected to fluid lubrication and low friction in a steady operation, and leakage of a sealed fluid and entrance of dust into the sealing faces are prevented.
In a sealing face of at least one slide part of a pair of slide parts, a dynamic pressure generation groove 10 is provided so as to be separated not to communicate with a sealed fluid side and a leakage side by land portions on both sealing faces, between an end 10a on the leakage side of the dynamic pressure generation groove 10 and the leakage side, a fluid introduction groove 11 which communicates the dynamic pressure generation groove 10 and the leakage side is provided, and the cross-sectional area of the fluid introduction groove 11 is set smaller than the cross-sectional area of the dynamic pressure generation groove 10.

摘要翻译： 密封面在稳定操作中经受流体润滑和低摩擦，并防止密封流体的泄漏和灰尘进入密封面。 在一对滑动部件的至少一个滑动部件的密封面上设置有动压产生槽10，该动压产生槽10在两个密封面上分别不与密封流体侧和泄漏侧连通， 在动压产生槽10的泄漏侧的端部10a与泄漏侧之间设置有连通动压产生槽10和泄漏侧的流体引入槽11，并且流体引入的横截面面积 将槽11设定得比动压产生槽10的横截面积小。

公开(公告)号：EP3309431A1

公开(公告)日：2018-04-18

申请号：EP16811353.8

申请日：2016-05-13

申请人： Eagle Industry Co., Ltd.

发明人： TOKUNAGA, Yuichiro ,  INOUE, Hideyuki ,  KIMURA, Wataru ,  IGUCHI, Tetsuya ,  HOSOE, Takeshi ,  KASAHARA, Hidetoshi ,  OTA, Takafumi ,  CHIBA, Keiichi ,  ITADANI, Masatoshi ,  KATORI, Hikaru

IPC分类号： F16J15/34

CPC分类号： F16J15/34 ,  F16C17/102 ,  F16C33/107 ,  F16C2360/24

摘要： The present invention is to make sealing faces fluid-lubricant and low frictional and to prevent leakage of a sealed fluid and incoming of dust to the sealing faces at the time of normal operation.
Dynamic pressure generation grooves 10 are provided on a sealing face of at least one of a pair of slide parts 4, 7 so as to be isolated with no communication from the sealed fluid side and the leakage side by land portions R of both the sealing faces, and a plurality of independently-formed minute recessed sections 11 is provided at positions on the sealing face IS between the dynamic pressure generation grooves 10 and the leakage side, the positions being separated in the radial direction from the dynamic pressure generation grooves.

摘要翻译： 本发明是为了在正常运行时使密封面流体润滑和低摩擦并且防止密封流体泄漏和灰尘进入密封面。 动压产生槽10设置在一对滑动部件4,7中的至少一个的密封面上，以便在密封流体侧和泄漏侧不通过两个密封面的陆部R 并且在动压产生槽10与泄漏侧之间的密封面IS上的位置处设置有多个独立形成的微小凹部11，这些位置沿径向方向与动压产生槽分离。