公开(公告)号：EP2829738A4

公开(公告)日：2015-09-23

申请号：EP12871670

申请日：2012-08-02

Applicant: EAGLE IND CO LTD

Inventor： YAMASHITA MATSUYOSHI

IPC: F15B1/08

CPC classification number: F16L55/053 ,  F15B1/083 ,  F15B1/103 ,  F15B20/007 ,  F15B2201/3158 ,  Y10T137/1632 ,  Y10T137/8811

公开(公告)号：EP2957776A4

公开(公告)日：2016-02-24

申请号：EP13875034

申请日：2013-12-05

Applicant: EAGLE IND CO LTD

Inventor： HYODO DAISUKE ,  MIYAKE KUNIAKI ,  YAMASHITA MATSUYOSHI

IPC: F15B1/08

CPC classification number: F15B1/103 ,  F15B20/007 ,  F15B2201/3153 ,  F15B2201/3157 ,  F15B2211/865

Abstract: Provided is an accumulator, which: is capable of reducing the pressure difference that is generated by differences in coefficients of thermal expansion when liquid trapped in the liquid chamber and a sealed gas undergo thermal expansion during zero-down, thereby limiting the occurrence of plastic deformation in the bellows; and has a structure in which the parts are small and few in number. To achieve said purpose, the accumulator has a sealing member held on the port hole-side of the bellows cap via a seal holder. When operation of the machine is stopped and the pressure inside the pressure piping decreases, the sealing member contacts the sealing section and closes the liquid chamber. If liquid trapped in the liquid chamber when the liquid chamber is closed undergoes thermal expansion, the bellows cap moves in the direction away from the sealing section while the sealing member is still in contact with the sealing section. Since the sealing member is a rigid plate, the outer circumferential surface of which is covered by a flexible section obtained from a rubber-like elastic body, the flexible section allows relative movement of the bellows cap by undergoing shear deformation as a result of engagement with the seal holder.

公开(公告)号：EP3312434A4

公开(公告)日：2018-06-06

申请号：EP16814249

申请日：2016-06-16

Applicant: EAGLE IND CO LTD

Inventor： ARIKAWA TATSUHIRO ,  YAMASHITA MATSUYOSHI

IPC: F15B1/10 ,  F15B1/24

CPC classification number: F15B1/106 ,  F15B1/103 ,  F15B20/007 ,  F15B2201/3153 ,  F15B2201/41

Abstract: The purpose of the present application is to provide an accumulator that can reduce the number of components in a pressure fluctuation absorbing mechanism, simplify assembly, and reduce component costs. An accumulator (1) comprises: a pressure vessel (2); a partitioning part (11) that partitions an internal space of the pressure vessel (2) into a gas chamber (9) that is filled with a gas and a liquid chamber (10) into which a liquid is introduced; and bellows (7) that are connected to the partitioning part (11). The partitioning part (11) comprises: a bellows connection part (12) that is connected to the bellows (7); a seal (15) that is disposed on a liquid-chamber-side of the bellows connection part (12); and a seal-holding part (14) that is fixed to the bellows connection part (12) and holds the seal (15). The seal-holding part (14) comprises a plate spring, part of which can elastically deform, and is configured such that a fixed part (17) that is fixed to the bellows connection part (12) and a holding part (16) that holds the seal are integrally formed.