Disc-type air filters
US6918951B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Jul 16, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/64
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air filter includes a stack of filter discs formed with contacting faces having surface formations defining filtering passageways between adjacent discs for removing solid particles from the air passing through the stack. The filter discs in the stack further include electrodes spaced from each other axially of the stack and connectable to a voltage source for producing an electrical field attracting solid particles towards the discs to thereby enhance removal of the solid particles from the air passing through the stack. The filter discs in the stack include a first plurality of insulating discs composed of insulating material, and a second plurality of electrode discs composed of electrically-conductive material, with the electrode discs separated from each other by at least one insulating disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.