Electrostatic filter construction
US4555252A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1984 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Mar 28, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Modern fiber material filters for floating particles remove floating substances from the air or gas flow conducted through them. In addition to the pure screening properties it is electrostatic forces, generated either by the flowing action or by accessory equipment, which make it possible to obtain the high degrees of separation, such as at least 99.97%, for example. An electrostatic filter for floating particles contains an electrode on each of the inlet and discharge sides. The electrostatic field through which the retaining ability is increased is generated by an oppositely polarized voltage. The floating particles filter according to the invention contains an electrode on the discharge side in the form of a metallic vapor deposit on the dielectric, folded filter material. This electrode retains every last floating particle which, above all, are then still located within the filter material itself, so that in case of a power failure, they cannot blow away.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.