US 12,145,081 B1
Fluid flow control device with different permeabilities
David Bruce Robinson, Hayward, CA (US); and Maher Salloum, Livermore, CA (US)
Assigned to National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US)
Filed by National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US)
Filed on Jan. 26, 2021, as Appl. No. 17/158,115.
Int. Cl. B01D 15/22 (2006.01); B01D 35/157 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01)
CPC B01D 15/22 (2013.01) [B01D 35/157 (2013.01); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12)] 18 Claims
OG exemplary drawing
 
1. A fluid flow control device with graded permeability comprising:
an insert body, wherein the insert body is shaped for sealing insertion into a fluid flow structure for fluid flow therethrough, wherein the insert body comprises:
a first portion with a first permeability, wherein the first portion is centrally located within the insert body; and
a second portion with a second permeability, wherein the second portion is located beyond a distance from a center of the insert body such that the second portion is at a farther distance from a central axis of the insert body as compared to the first portion,
wherein the first permeability of the first portion is lower than the second permeability of the second portion,
wherein the first portion and the second portion are arranged in the insert body to cause fluid to pass through the first portion and the second portion when the insert body is placed inside the fluid flow structure;
wherein the insert body has a circular cross-section and the first portion and the second portion are arranged concentrically such that the second portion surrounds a perimeter of the first portion.