Fluid nozzle system using self-propelling toroidal vortices for long-range jet impact
US7621463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Sep 10, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/341
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid nozzle system (nicknamed the “RAP nozzle system”) is disclosed that combines a pulse flow device with a toroidal vortex generator to create a high momentum, self propelling jet for increasing long-range jet impact forces. In a preferred embodiment, the RAP nozzle system comprises a fluid switch, without any moving mechanical part, which takes continuous flow normally exited through a nozzle and breaks it into discrete patterns of pulsed flow. The unsteady characteristics of the pulsed flow are then used with either single-stage ejectors, multi-stage ejectors or other devices to increase the momentum and/or the lateral size of the individual pulses. These fluid pulses are then used to generate a jet with large scale, stable toroidal vortices which travel long distances, downstream of the ejector(s), and apply large forces at impact. Unlike the prior art, such toroidal vortices are stable, carry large flow momentum, and propel themselves through the air (or other fluid) at a speed approximately ¼ the pulsed velocity of the fluid used to generate the vortices. Furthermore, the toroidal vortices travel beyond the RAP nozzle system with minimal mixing and minimal losses. Tests c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.