Separating contaminants from gas ions in corona discharge ionizing bars
US8038775B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 4, 2011 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Feb 4, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C2201/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Clean corona ionization bars separate contaminant byproducts from corona generated ions by establishing a non-ionized gas stream having a pressure and directed toward an attractive non-ionizing electric field of a charge neutralization target, by establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent byproducts from migrating into the non-ionized gas stream. The ionization bar(s) may be located sufficiently close to the charged neutralization target that a non-ionizing electric field of the target induces at least a substantial portion of the ions to migrate into the non-ionized gas stream and to the neutralization target as a clean ionized gas stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.