公开(公告)号：US20160169396A1

公开(公告)日：2016-06-16

申请号：US14956094

申请日：2015-12-01

Applicant: CKD CORPORATION

Inventor： Shinji ISHIKAWA ,  Michio MIYASHITA ,  Hiroyuki MURASE

IPC: F16K1/34

CPC classification number: F16K1/34 ,  F16K1/36 ,  F16K1/42 ,  F16K25/04 ,  F16K41/103 ,  F16K41/12

Abstract: A fluid control valve includes: a drive section; body provided with first port, second port, and valve seat; and valve element formed columnar-shaped and coupled with the drive section, and the valve element includes annular sealing protrusion annularly protruding from end face located on side facing the valve seat, the sealing protrusion being provided at leading end with annular sealing portion to be pressed against the valve seat for sealing and at least the annular sealing protrusion is made of fluororesin. The valve element is configured such that the annular sealing portion is radially displaced with displacement amount of no more than 6.175 μm when the annular sealing portion is pressed against the valve seat by the drive section so that abrasion caused by deformation of the valve element in valve closing is restrained and generation of particles is prevented.

Abstract translation: 流体控制阀包括：驱动部分; 主体设有第一端口，第二端口和阀座; 阀元件形成为圆柱状并与驱动部分结合，并且阀元件包括环形密封突起，环形密封突起从位于面向阀座的一侧的端面突出，密封突起在前端设有被压制的环形密封部分 抵靠阀座进行密封，至少环形密封突起由氟树脂制成。 阀元件构造成使得当环形密封部分被驱动部分压靠在阀座上时，环形密封部分的位移量不大于6.175μm的径向位移，使得阀元件在阀中的变形引起的磨损 阻止闭合并防止颗粒的产生。

公开(公告)号：US20190257432A1

公开(公告)日：2019-08-22

申请号：US16309051

申请日：2017-06-19

Applicant: CKD CORPORATION

Inventor： Tatsushi NABEI ,  Michio MIYASHITA ,  Shinji ISHIKAWA ,  Fumihito TSUCHIYA

IPC: F16K1/36 ,  F16K31/122

Abstract: A fluid control valve and manufacturing method thereof, wherein, when a pressing force acts on the engagement surface between a diaphragm member and a valve seat-contacting member, the valve seat-contacting member is not displaced and no gap is formed. The diaphragm member made of a first fluorine-based resin material is provided with a diaphragm membrane and a rod-shaped part in the center of the diaphragm membrane. The valve seat-contacting member made of an injection-moldable second fluorine-based resin material is provided with a ring-shaped sealing surface and a recess on the opposite side from the ring-shaped sealing surface. The rod-shaped part is partly fitted into the recess. A ring-shaped recessed is formed on outer circumference of a portion of the rod-shaped part. A small diameter recess is formed on the inner circumference of the recess. The ring-shaped recess section and the small diameter recess adhere closely to form the engagement surface.