Additively manufactured carbon dioxide scrubber

Patent metadata

Field	Value
Publication number	US-10919091-B2
Application number	US-201815938998-A
Country	US
Kind code	B2
Filing date	Mar 28, 2018
Priority date	Mar 28, 2018
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A metal lattice for a carbon dioxide scrubber may comprise a metal lattice body defining a plurality of intersecting ligaments, wherein nodes are formed at said intersections. In various embodiments, the metal lattice may be manufactured using an additive manufacturing process. A node density of the metal lattice may vary. A ligament thickness of the metal lattice may vary. In various embodiments, the metal lattice may be unstructured. In various embodiments, the metal lattice may comprise high aspect ratio ligaments for directing an air flow.

First claim

What is claimed is:

1. A carbon dioxide scrubber, comprising:
an unstructured metal lattice body defined by a plurality of ligaments extending between a common wall and a housing, wherein the housing is configured to receive a flow of air and the plurality of ligaments extend transversely with respect to a direction of the flow of air.

2. The carbon dioxide scrubber of claim 1 , wherein the metal lattice is formed by an additive manufacturing process comprising one of a powder bed fusion process, a powder-feed directed energy deposition process, and a wire-feed directed energy deposition process.

3. The carbon dioxide scrubber of claim 2 , wherein the additive manufacturing process is a laser powder bed fusion process.

4. The carbon dioxide scrubber of claim 1 , wherein the plurality of ligaments vary in thickness.

5. The carbon dioxide scrubber of claim 1 , wherein the plurality of ligaments vary in density.

6. The carbon dioxide scrubber of claim 5 , wherein a thickness of each the plurality of ligaments is constant.

7. The carbon dioxide scrubber of claim 1 , wherein the metal lattice is made from a metal material comprising at least one of an aluminum or an aluminum alloy.

8. The carbon dioxide scrubber of claim 7 , further comprising the housing, wherein the unstructured metal lattice body is further defined by at least one ligament extending from the housing and terminating on at least one of the plurality of ligaments.

9. A carbon dioxide scrubber, comprising:
a metal lattice body defining a plurality of intersecting ligaments, wherein nodes are formed at intersections of the plurality of intersecting ligaments; and
wherein the plurality of intersecting ligaments comprise a high aspect ratio.

10. The carbon dioxide scrubber of claim 9 , wherein the metal lattice is formed by an additive manufacturing process comprising one of a powder bed fusion process and a directed energy deposition process.

11. The carbon dioxide scrubber of claim 10 , wherein the additive manufacturing process is a laser powder bed fusion process.

12. The carbon dioxide scrubber of claim 9 , wherein an aspect ratio of each ligament is greater than 2.

13. The carbon dioxide scrubber of claim 12 , wherein each ligament comprises an airfoil geometry.

14. The carbon dioxide scrubber of claim 12 , wherein each ligament comprises an ellipsoidal geometry.

15. The carbon dioxide scrubber of claim 9 , wherein the metal lattice is made from a metal material comprising at least one of an aluminum or an aluminum alloy.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Lynch Matthew E
• Filburn Thomas P
• El-Wardany Tahany Ibrahim
• Walsh Peter J

Classifications

• B22F10/25

  Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS] · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B01D53/1475 Primary

  Removing carbon dioxide · CPC title

• B22F3/1115 Primary

  comprising complex forms, e.g. honeycombs · CPC title

• B22F5/10

  of articles with cavities or holes, not otherwise provided for in the preceding subgroups · CPC title