Alternating magnetic field systems and methods for generating nanobubbles

Patent metadata

Field	Value
Publication number	US-11939245-B2
Application number	US-202117173499-A
Country	US
Kind code	B2
Filing date	Feb 11, 2021
Priority date	Oct 13, 2017
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

Alternating magnetic field (AMF) systems and devices and methods for producing nanobubbles said methods and devices. The AMF systems and devices of the present invention may feature sets of magnets configured to expose a flowing liquid to an alternating magnetic field. The alternating magnetic field destabilizes dissolved gas molecules to produce nanobubbles. The methods, systems, and devices of the present invention may be used to treat solution, for reducing fouling or corrosion in a tube system or pipe system, methods for increasing water porosity of soil, methods for treating thromboembolic disease, etc.

First claim

What is claimed is:

1. An alternating magnetic field (AMF) system ( 100 ) for producing nanobubbles comprising a pipe ( 110 ) with an enclosed core ( 120 ) mounted within the pipe, the core ( 120 ) extends along a length of the pipe ( 11 ) while allowing a liquid to flow through the pipe ( 110 ) and around the core ( 120 ) without entering the core ( 120 ), wherein a plurality of magnets ( 130 ) is housed in the core ( 120 ) oriented north end-to-north end and south end-to-south end, the magnets ( 130 ) expose the liquid to an alternating magnetic field, wherein the core ( 120 ) is shaped such that the liquid flows straight through the pipe ( 110 ), wherein a ratio of an outer diameter of the enclosed core ( 120 ) and an inner diameter of the pipe ( 110 ) is 1:3 to 35:64.

2. The system of claim 1 , wherein the magnets comprise neodymium magnets.

3. The system of claim 1 , wherein the magnets comprise a combination of two or more different types of magnets.

4. The system of claim 1 , wherein the nanobubbles comprise oxygen bubbles.

5. The system of claim 1 , wherein the liquid comprises calcium, carbonate, ions that can produce calcium bearing compounds, sodium chloride, selenium ions, or a combination thereof.

6. The system of claim 1 , wherein a ratio of an outer diameter of the enclosed core ( 120 ) and an inner diameter of the pipe ( 110 ) is 35:64.

7. A method of producing nanobubbles, said method comprising:
subjecting a solution to an alternating magnetic field (AMF) system comprising:
a pipe ( 110 ) with an enclosed core ( 120 ) mounted within the pipe, the core ( 120 ) extends along a length of the pipe ( 110 ) while allowing the solution to flow through the pipe ( 110 ) and around the core ( 120 ) without entering the core ( 120 ), wherein a plurality of magnets ( 130 ) is housed in the core ( 120 ) oriented north end-to-north end and south end-to-south end, the magnets ( 130 ) expose the solution to an alternating magnetic field;
wherein the core ( 120 ) is shaped such that the liquid flows straight through the pipe ( 110 ), wherein a ratio of an outer diameter of the enclosed core ( 120 ) and an inner diameter of the pipe ( 110 ) is 1:3 to 35:64;
wherein the AMF system destabilizes gas molecules having been dissolved in the solution to precipitate nanobubbles comprising the gas molecules.

8. The method of claim 7 , wherein the magnets comprise neodymium magnets.

9. The method of claim 7 , wherein the magnets comprise a combination of two or more different types of magnets.

10. The method of claim 7 , wherein the gas molecules comprise oxygen molecules.

11. The method of claim 7 , wherein the solution comprises calcium.

12. The method of claim 7 , wherein the solution comprises carbonate.

13. The method of claim 7 , wherein the solution comprises ions that can produce calcium bearing compounds.

14. The method of claim 7 , wherein the solution comprises sodium chloride.

15. The method of claim 7 , wherein the solution comprises selenium ions.

16. The method of claim 7 , wherein a ratio of an outer diameter of the enclosed core ( 120 ) and an inner diameter of the pipe ( 110 ) is 35:64.

17. A method of reducing fouling or corrosion in a tube or pipe system with flowing liquid, said method comprising:
subjecting a solution to an alternating magnetic field (AMF) system to produce nanobubbles in the solution, the AMF system comprising:
a pipe ( 110 ) with an enclosed core ( 120 ) mounted within the pipe, the core ( 120 ) extends along a length of the pipe ( 110 ) while allowing the solution to flow through the pipe ( 110 ) and around the core ( 120 ) without entering the core ( 120 ), wherein a plurality of magnets ( 130 ) is housed in the core ( 120 ) oriented north end-to-north end and south end-to-south end, the magnets ( 130 ) expose the solution to an alternating magnetic field; wherein the AMF system produces nanobubbles in the solution; wherein the core ( 120 ) is shaped such that the liquid flows straight through the pipe ( 110 ), wherein a ratio of an outer diameter of the enclosed core ( 120 ) and an inner diameter of the pipe ( 110 ) is 1:3 to 35:64; and

introducing the nanobubbles of the solution to the liquid in the tube or pipe system, wherein the nanobubbles bind or cluster nanoparticles so the nanoparticles do not foul or corrode the tube or pipe system or induce the dissolution of larger solids in the liquid.

18. The method of claim 17 , wherein the magnets comprise neodymium magnets.

19. The method of claim 17 , wherein the magnets comprise a combination of two or more different types of magnets.

20. The method of claim 17 , wherein a ratio of an outer diameter of the enclosed core ( 120 ) and an inner diameter of the pipe ( 110 ) is 35:64.

Assignees

• Univ California

Inventors

• Earthman James C
• Wagner Chuck
• Wu Ruqian

Classifications

• C02F1/481 Primary

  using permanent magnets · CPC title

• A61N2/004

  specially adapted for a specific therapy · CPC title

• C02F2103/026

  Treating water for medical or cosmetic purposes · CPC title

• C02F2303/08

  Corrosion inhibition · CPC title

• C02F2303/20

  Prevention of biofouling · CPC title