Method and device for cleaning a gaseous fluid using a conductive grid between charging head and filter
US6790259B2 · kind B2 · utility
26Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jan 16, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/155
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method is disclosed for cleaning a flow of gaseous fluid, such as room air, from particles present in the fluid, the gaseous fluid being ionized, and using a conductive grid placed across and upstream of the filter for protecting the filter from being charged by free ions. An air purifier filter cartridge using the ion-intercepting grid of the invention is also disclosed. The grid may be connected to or electrically insulated from the ionizer ground potential, with equal effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.