Device and method for generating micro bubbles in a liquid using hydrodynamic cavitation
US7338551B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2005 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Jan 12, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/2373
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device and method for generating micro bubbles in a liquid. The method includes the steps of: providing a flow-through channel containing at least two local constrictions of flow therein; passing the liquid at a velocity of at least at least 12 m/sec through a first local constriction of flow to create a first hydrodynamic cavitation field downstream from the first local constriction of flow; introducing a gas into the liquid in the first local constriction of flow, thereby creating gas-filled cavitation bubbles; collapsing the gas-filled cavitation bubbles formed in the first hydrodynamic cavitation field to dissolve the gas into the liquid, thereby forming a gas-saturated liquid; passing the gas-saturated liquid through a second local constriction of flow to create a second hydrodynamic cavitation field downstream from the second local constriction of flow; and extracting the dissolved gas from the gas-saturated liquid, thereby generating micro bubbles in the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.