Method and apparatus for providing electrostatically charged airless, round spray with auxiliary gas vortex
US4245784A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1979 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Mar 6, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus for providing an electrostatically charged, airless, round vortex spray of liquid in which spray pattern irregularities may be eliminated. In addition to a central nozzle for forming the round vortex spray there is provided an annular nozzle for forming an auxiliary air vortex which is imparted with whirling motion in a direction opposite to that of the round spray of liquid. The air flow rate for the auxiliary air vortex is set above a value at which spray pattern irregularities disappear. The hydrostatic pressure for the round spray ranges between 25 and 75 bars and the air pressure for the auxiliary air vortex ranges between three and one bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.