公开(公告)号：EP3795868A1

公开(公告)日：2021-03-24

申请号：EP19804382.0

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 dynamic pressure grooves 12 formed at a sliding surface S1 of the seal ring 1 and arranged in a circumferential direction so as to be configured to generate dynamic pressure. The dynamic pressure grooves 12 include deep grooves 120 having openings on a sealed fluid side and shallow grooves 121 being shallower than the deep grooves. The shallower grooves 121 are formed continuously to the deep grooves 120 and extend to at least one side in the circumferential direction. At least adjacent two of the deep grooves 120, 120' of the dynamic pressure grooves 12, 12' in the circumferential direction are formed as a dynamic pressure groove unit 100 configured such that the adjacent two of the deep grooves 120, 120' communicate with each other through a communication groove 14 extending in the circumferential direction on an opposite side of the openings of the deep grooves 120, 120' in a radial direction.

公开(公告)号：EP3816487A1

公开(公告)日：2021-05-05

申请号：EP19803232.8

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; inclined grooves 15 formed at a sliding surface S1 so as to be arranged in a circumferential direction, the inclined grooves 15 being closed on an outer diameter side thereof and configured to generate a dynamic pressure; and supply grooves 13 opening on a sealed fluid side and communicating with an inner diameter side of the inclined grooves 15.