Fluid control device and manufacturing method for the fluid control device

Patent metadata

Field	Value
Publication number	US-11774000-B2
Application number	US-201917289831-A
Country	US
Kind code	B2
Filing date	Oct 18, 2019
Priority date	Oct 31, 2018
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A fluid control device includes: a joint block defining a fluid flow path open to an upper surface thereof, and which has an engaging portion on the bottom surface side thereof; a support member having a guide portion which restrains the joint block on the upper surface while permitting the joint block to move in longitudinal direction; and a fluid device fixed to the upper surface of the joint block. The support member is provided with at least one plunger such that the tip end portion protrudes from the upper surface of the support member. A recess is provided in the bottom surface of the joint block, and the recess engages with the tip end portion of the plunger to set the position of the joint block in the longitudinal direction.

First claim

The invention claimed is:

1. A fluid control device comprising:
a joint block defining an upper surface and a bottom surface opposing each other, side surfaces extending from the upper surface toward the bottom surface side, defining a fluid flow path which is open to the upper surface, and having an engaging portion on the bottom surface side;
a support member having a guide portion that extends linearly in a longitudinal direction adapted to be engaged with the engaging portion of the joint block, and restraining the joint block on an upper surface while allowing the joint block to move in the longitudinal direction by the guide portion; and
a fluid device having at least two flow path ports that open on a bottom surface of the fluid device and fixed to the upper surface of the joint block so that the flow path ports are each connected to the fluid flow path of the joint block,
wherein the support member is provided with at least one plunger so that a tip end portion of the plunger protrudes from the upper surface of the support member, a recess is provided in the bottom surface of the joint block, and the recess is engaged with the tip end portion of the plunger to set a position of the joint block in the longitudinal direction.

2. The fluid control device according to claim 1 , comprising at least two joint blocks, wherein the at least one plunger comprises at least two plungers, with one plunger respectively provided for each joint block, and the joint blocks are positioned with a gap therebetween.

3. The fluid control device according to claim 1 , comprising at least two joint blocks, wherein only one plunger is provided on the support member and all of the joint blocks are integrally positioned so that they are in contact with each other.

4. The fluid control device according to claim 1 , wherein the plunger is of a ball type.

5. The fluid control device according to claim 1 , comprising at least two joint blocks, wherein the fluid device has a body defining fluid flow paths, the body having the two flow path ports opening at its bottom surface,
the joint blocks of an upstream side and a downstream side of the fluid device each has a screw hole formed from the upper surface toward the bottom surface side of the joint block, the screw hole being adapted to be screwed with a fastening bolt for connecting the body to the joint blocks of the upstream side and the downstream side while pressurizing a seal member disposed around each of flow path ports of the joint blocks of the upstream side and the downstream side and each of two flow path ports of the body,
the screw hole of the joint block of the upstream side of the fluid device is formed only on the upstream side of the flow path port of the joint block in the longitudinal direction,
the screw hole of the joint block of the downstream side of the fluid device is formed only on the downstream side of the flow path port of the joint block in the longitudinal direction,
the joint blocks of the upstream side and the downstream side of the fluid device are fixed to the guide portion by utilizing a part of a reaction force against a bending force generated by the tightening force of the fastening bolts to the joint blocks of the upstream side and the downstream side of the fluid device and the body connected to each other.

6. A method for manufacturing a fluid control device comprising: a joint block defining an upper surface and a bottom surface opposing each other, side surfaces extending from the upper surface toward the bottom surface side, defining a fluid flow path which is open to the upper surface, and having an engaging portion on the bottom surface side;
a support member having a guide portion that extends linearly in a longitudinal direction adapted to be engaged with the engaging portion of the joint block, and restraining the joint block on an upper surface of the support member while allowing the joint block to move in the longitudinal direction by the guide portion;
a fluid device having at least two flow path ports that open on a bottom surface of the fluid device and fixed to an upper surface of the joint block so that the flow ports are each connected to the fluid flow path of the joint block,
the method for manufacturing a fluid control device comprising the steps of:
providing at least one plunger on the support member so that a tip end portion protrudes from the upper surface of the support member,
providing a recess on the bottom surface of the joint block,
engaging the recess with the tip end portion of the plunger to set a position of the joint block in the longitudinal direction, and

tightening each joint block with each fluid device in this state.

Assignees

• Fujikin Kk

Inventors

• Aikawa Kenji
• Nakata Tomohiro
• Inada Toshiyuki
• Harada Akihiro
• Matsuda Takahiro
• Shinohara Tsutomu

Classifications

• H10P72/0402

  Apparatus for fluid treatment (H10P72/0441, H10P72/0448 take precedence) · CPC title

• F16K27/003 Primary

  Housing formed from a plurality of the same valve elements · CPC title

• F15B13/0825

  the modular elements being mounted on a common member, e.g. on a rail · CPC title

• F16K27/0245

  with ball-shaped valve members · CPC title

• F16K31/50

  with screw-spindle {or internally threaded actuating means} · CPC title