Method and construction of filters and pre-filters for extending the life cycle of the filter bodies therein
US7377957B2 · kind B2 · utility
3Cited by
21References
20Claims
0Family size
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Key dates
| Filing date | Feb 4, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Dec 9, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C2201/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of utilizing a filter having a filter body removing solid particles from a fluid, in order to extend the life cycle of the filter body before cleaning or replacement thereof is required, characterized in applying to the fluid, upstream of the filter body, an AC electrical field of a frequency and intensity to agglomerate solid particles in the fluid reaching the filter body, such as to reduce the number of smaller particles in the fluid tending to clog the filter body. Also described are a plurality of filter constructions for extending the life cycle of the filter body in accordance with the above method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.