Electrostatic discharge mitigation valve

Patent metadata

Field	Value
Publication number	US-12066121-B2
Application number	US-202217732136-A
Country	US
Kind code	B2
Filing date	Apr 28, 2022
Priority date	Apr 30, 2021
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

This disclosure provides operative components that mitigate electrostatic charge in fluid circuits. Illustrative embodiments include diaphragm valves that provide fluid control and allow static charge to dissipate when these diaphragm valves are grounded.

First claim

What is claimed is:

1. An operative component for a fluid circuit:
comprising a housing having i) one or more fluid intake fitting, ii) one or more fluid output fitting, and iii) one or more fluid control components configured to transfer static charge from the fluid control component to ground, wherein the one or more fluid control components comprise a diaphragm valve for controlling fluid flow from the intake fitting to the output fitting and
a gasket positioned on the diaphragm valve, wherein the gasket comprises a conductive fluoropolymer to transfer static charge from the diaphragm valve to ground,
wherein the diaphragm valve includes a flexible fluoropolymer body to control fluid flow from the intake fitting to the output fitting,
wherein the flexible fluoropolymer body includes a conductive perimeter portion directly connected to and at least partially surrounding a perimeter of a non-conductive internal region, and
wherein the gasket is configured to correspond to the shape of a conductive perimeter portion.

2. The operative component of claim 1 , wherein the conductive fluoropolymer segment is in conductive contact with the non-conductive flexible fluoropolymer body.

3. The operative component of claim 1 , wherein the conductive fluoropolymer comprises tetrafluoroethylene polymer loaded with conductive material.

4. A diaphragm valve for a fluid circuit comprising two or more housing components, one or more intake fitting, one or more output fitting, and a diaphragm, wherein the diaphragm comprises a flexible conductive fluoropolymer body to transfer static charge from the diaphragm to ground;
wherein the flexible conductive fluoropolymer body comprises a conductive fluoropolymer segment around a perimeter of a non-conductive flexible fluoropolymer body;
and a gasket positioned on the diaphragm, wherein the gasket comprises a conductive fluoropolymer to ground,
wherein the diaphragm includes a conductive perimeter portion directly connected to and at least partially surrounding a perimeter of a non-conductive internal region, and
wherein the gasket is configured to correspond to the shape of a conductive perimeter portion.

5. The diaphragm valve of claim 4 , wherein the conductive fluoropolymer segment is in conductive contact with the non-conductive flexible fluoropolymer body.

6. The diaphragm valve of claim 4 , wherein the conductive fluoropolymer segment comprises perfluoroalkoxy alkane polymer (PFA), ethylene and tetrafluoroethylene polymer (ETFE), ethylene, tetrafluoroethylene and hexafluoropropylene polymer (EFEP), fluorinated ethylene propylene polymer (FEP), tetrafluoroethylene polymer (PTFE), or combinations thereof.

7. The diaphragm valve of claim 4 , wherein the conductive fluoropolymer segment mitigates electrostatic discharge in a flange segment of the diaphragm valve.

8. The diaphragm valve of claim 4 , wherein the gasket comprises tetrafluoroethylene polymer loaded with conductive material.

9. A method of making a fluid circuit with an integrated electrostatic discharge mitigation system comprising installing an operative component of claim 4 in the fluid circuit and grounding the operative component.

Assignees

• Entegris Inc

Inventors

• Leys John A
• Shim Jaehan

Classifications

• H05F3/02 Primary

  by means of earthing connections · CPC title

• F16K7/16 Primary

  the diaphragm being mechanically actuated, e.g. by screw-spindle or cam · CPC title

• F16K27/0236

  Diaphragm cut-off apparatus · CPC title

• F16K25/005 Primary

  Particular materials for seats or closure elements · CPC title

• F16K7/126 Primary

  the seat being formed on a rib perpendicular to the fluid line · CPC title