Damage tolerant cavitation nozzle

Patent metadata

Field	Value
Publication number	US-12466028-B2
Application number	US-202217856934-A
Country	US
Kind code	B2
Filing date	Jul 1, 2022
Priority date	Jul 1, 2022
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A cavitation nozzle is disclosed, including a plate, a hollow body, and a cap removably engaged with the hollow body and holding the plate against a distal end of the hollow body. The plate may have a central aperture and a distal surface, wherein the distal surface is bisected by a groove and the hollow body is configured to deliver high pressure fluid through the central aperture. The delivered high pressure fluid may be discharged as a cavitating jet.

First claim

What is claimed is:

1 . A cavitation nozzle, comprising:
a plate having a distal face and a central aperture defining a fluid flow axis; a hollow body configured to deliver high pressure fluid through the central aperture as a cavitating jet; and a cap removably engaged with the hollow body, holding the plate against a distal end of the hollow body, wherein the cap has a slit bisecting a distal surface, exposing the central aperture of the plate, wherein the plate has a groove bisecting the distal face, the slit has a long axis, and the groove has a long axis perpendicular to the long axis of the slit.

2 . The cavitation nozzle of claim 1 , wherein the central aperture has an hourglass-shaped cross-section along the fluid flow axis.

3 . The cavitation nozzle of claim 1 , wherein the distal face of the plate forms an oblique angle relative to the fluid flow axis.

4 . A cavitation nozzle comprising:
a hollow body configured to deliver high-pressure fluid, the hollow body having a distal end; a nozzle plate having a proximal face and a distal face, the proximal face secured against the distal end of the hollow body, the nozzle plate defining a central aperture extending between the proximal face and the distal face; and a cap holding the nozzle plate against the distal end of the hollow body, wherein the cap has a slit bisecting a distal surface of the cap, wherein the nozzle plate has a groove bisecting the distal face of the nozzle plate, and wherein the groove has a long axis perpendicular to a long axis of the slit.

5 . The cavitation nozzle of claim 4 , wherein the central aperture has an hourglass-shaped cross-section along the fluid flow axis.

6 . The cavitation nozzle of claim 4 , wherein the distal face of the nozzle plate forms an oblique angle relative to the fluid flow.

7 . The cavitation nozzle of claim 4 , wherein the nozzle plate includes a reinforced insert surrounding the central aperture.

8 . The cavitation nozzle of claim 4 , wherein the nozzle plate is substantially planar.

9 . The cavitation nozzle of claim 8 , wherein the nozzle plate has a substantially uniform thickness between the proximal face and distal face.

10 . The cavitation nozzle of claim 8 , wherein the nozzle plate has substantially parallel proximal and distal faces.

11 . The cavitation nozzle of claim 10 , wherein the distal face of the nozzle plate includes a linear groove bisecting the distal face.

12 . The cavitation nozzle of claim 11 , wherein the linear groove extends completely across the nozzle plate, from one edge to an opposite edge.

13 . The cavitation nozzle of claim 8 , wherein the nozzle plate comprises a thickness dimension smaller than a radius of the nozzle plate.

14 . The cavitation nozzle of claim 8 , wherein proximate surface of the cap contacts the distal surface of the nozzle plate.

15 . The cavitation nozzle of claim 4 , wherein the nozzle plate comprises diamond crystal material.

16 . The cavitation nozzle of claim 4 , wherein the nozzle plate comprises cubic boron nitride, boron carbon nitride, metal boride, or nanostructured fullerene.

17 . The cavitation nozzle of claim 4 , wherein a cross-sectional area of the groove is curved.

18 . A cavitation nozzle comprising:
a hollow body configured to deliver high-pressure fluid, the hollow body having a distal end; a nozzle plate having a proximal face and a distal face, the proximal face secured against the distal end of the hollow body, the nozzle plate defining a central aperture extending between the proximal face and the distal face; and a cap holding the nozzle plate against the distal end of the hollow body, wherein the cap has a slit bisecting a distal surface of the cap, wherein the central aperture has an elongate opening, and wherein the central aperture has a long axis perpendicular to a long axis of the slit.

19 . The cavitation nozzle of claim 18 , wherein the nozzle plate has a groove bisecting the distal face of the nozzle plate, and wherein the groove has a long axis perpendicular to a long axis of the slit.

20 . The cavitation nozzle of claim 18 , wherein the elongate opening of the central aperture has an hour-glass shape comprising a symmetrically curved constriction and expansion along its long axis.

Assignees

• Boeing Co
• Univ Tohoku

Inventors

• De Silva Kandaudage Channa Ruwan
• Sanders Daniel Gordon
• Shimabukuro John K
• Soyama Hitoshi

Classifications

• B05B1/042

  Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet (B05B1/044, B05B1/046 take precedence) · CPC title

• B05B15/18

  for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts · CPC title

• B05B1/34

  designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl (designed to control volume of flow B05B1/30) · CPC title

• B24C1/10

  for compacting surfaces, e.g. shot-peening (for deforming sheet metal, tubes or profiles B21D31/06; as a metallurgical treatment C21D7/00, C22F1/00) · CPC title

• B24C11/00

  Selection of abrasive materials {or additives} for abrasive blasts (polishing compositions C09G) · CPC title