Systems and methods for periodic nodal surface based reactors, distributors, contractors and heat exchangers

Patent metadata

Field	Value
Publication number	US-12276459-B2
Application number	US-202318528250-A
Country	US
Kind code	B2
Filing date	Dec 4, 2023
Priority date	Jan 9, 2019
Publication date	Apr 15, 2025
Grant date	Apr 15, 2025

Abstract

The present disclosure relates to a method for forming a transport mechanism for transporting at least one of a gas or a liquid. The method may comprise using a 3D printing operation to form the mechanism with an inlet and an outlet, and controlling the 3D printing operation to create the mechanism as an engineered surface structure formed in a layer-by-layer process. The method may further comprise controlling the 3D printing operation such that the engineered surface structure includes a plurality of cells propagating periodically in three dimensions, with non-intersecting, non-flat, continuously curving wall portions which form two non-intersecting domains, and where the wall portions have openings forming a plurality of flow paths extending in three orthogonal dimensions throughout from the inlet to the outlet, and such that the engineered surface structure has wall portions having a mean curvature other than zero.

First claim

What is claimed is:

1. A method for forming a transport mechanism for transporting at least one of a gas or a liquid, comprising:
using a three dimensional (3D) printing operation to form the mechanism with an inlet and an outlet;
controlling the 3D printing operation to create the mechanism as an engineered surface structure formed in a layer-by-layer process using the 3D printing operation; and
further controlling the 3D printing operation such that the engineered surface structure includes a plurality of cells propagating periodically in three dimensions, with non-intersecting, non-flat, continuously curving wall portions which form two non-intersecting domains, and where the wall portions have openings forming a plurality of flow paths extending in three orthogonal dimensions throughout the transport mechanism from the inlet to the outlet, and such that the engineered surface structure has wall portions having a mean curvature other than zero.

2. The method of claim 1 , further comprising controlling the 3D printing operation such that the cells formed vary in dimension throughout the mechanism.

3. The method of claim 1 , further comprising controlling the 3D printing operation such that the cells formed vary in wall thickness throughout the mechanism.

4. The method of claim 1 , wherein the controlling the 3D printing operation such that the engineered surface structure includes the plurality of cells propagating periodically in three dimensions comprises controlling the 3D printing operation to create a periodic nodal surface structure.

5. The method of claim 1 , wherein the further controlling the 3D printing operation such that the engineered surface structure includes the plurality of cells propagating periodically in three dimensions comprises forming the transport mechanism where a first subportion of the cells include openings which form the inlet, and a second subportion of the cells include openings forming the outlet.

6. The method of claim 1 , wherein controlling the 3D printing operation further comprises controlling the 3D printing operation so that the cells decrease smoothly in size from the inlet moving to the outlet.

7. The method of claim 1 , wherein controlling the 3D printing operation further comprises controlling the 3D printing operation so that the cells decrease smoothly in size moving from the outlet towards the inlet.

8. The method of claim 1 , wherein controlling the 3D printing operation further comprises forming the transport mechanism with a central portion disposed between the inlet and outlet, and wherein the cells decrease smoothly in size moving from each of the inlet and outlet towards the central portion of the mechanism that the cells decrease smoothly in size from the inlet moving towards the outlet.

9. The method of claim 1 , wherein controlling the 3D printing operation further comprises forming the transport mechanism such that a thickness of the wall portions is non-uniform across at least one of a length (X plane), a height (Y plane) and a depth (Z plane) of the mechanism, from the inlet to the outlet.

10. The method of claim 1 , wherein controlling the 3D printing operation further comprises forming the transport mechanism such that the wall portions comprise a gas separation membrane.

11. The method of claim 1 , wherein the controlling the 3D printing operation further comprises forming the transport mechanism such that the wall portions comprise a gas absorption monolith.

12. The method of claim 1 , wherein the controlling the 3D printing operation further comprises defining the engineered surface structure by a level set function.

13. The method of claim 12 , wherein defining the engineered surface structure by a level set function comprises:
wherein the level set function comprises:
F ( x,y,z )= t , where:

t=constant which determines a volume of fractions of two domains separated by a level set surface; and
F(x,y,z) controls a shape of a geometry of the cells of the engineered surface structure.

14. The method of claim 1 , wherein defining the engineered surface structure by a level set function comprises defining the engineered surface structure using level set surfaces that divide the engineered surface structure into three continuous volumes.

15. The method of claim 1 , wherein the controlling the 3D printing operation comprises controlling the 3D printing operation to form the cells so that the cells are non-uniform in size over at least one of a length (X plane), a height (Y plane) and a depth (Z plane) of the engineered surface structure.

16. The method of claim 15 , wherein the controlling the 3D printing operation comprises controlling the 3D printing operation to form the cells such that each of the cells forms a unit cell, and wherein a size gradient of each of the unit cells is controlled in accordance with a formula:
wherein each of the cells forms a unit cell, and wherein a size gradient of each of the unit cells is controlled in accordance with a formula:
L modified =L +(1 −H ε (φ)) Lf

where L is a length of the unit cell, and f a shrinkage or expansion factor of the unit cell;
where H ε (φ) is a smoothed Heaviside function which determines a variation of a graded zone:

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Assignees

• L Livermore Nat Security Llc

Inventors

• Iyer Jaisree Kannan
• Roy Pratanu
• Nguyen Du T
• Stolaroff Joshuah K

Classifications

• B01D69/10

  Supported membranes; Membrane supports · CPC title

• B01D71/022

  Metals · CPC title

• B01D67/00415

  by additive layer techniques, e.g. selective laser sintering [SLS], selective laser melting [SLM] or 3D printing · CPC title

• B01D67/00045

  by additive layer techniques, e.g. selective laser sintering [SLS], selective laser melting [SLM] or 3D printing · CPC title

• B01D71/701

  Polydimethylsiloxane · CPC title