Air cleaning device
US6749669B1 · kind B1 · utility
31Cited by
14References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Feb 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/39
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A particle precipitation device for removing particles entrained in a gas stream includes an array of passages (10) through which a gas stream can be directed relatively freely. The passages are provided between plastics walls adapted to create an electrical field within the array. The plastics walls may have areas of conductive material (1, 2) in contact therewith. High and low electrical potentials alternately applied to isolated areas of the conductive material provide charged sites in the array for collecting particles from the gas stream. Alternatively, the plastics walls may have electret properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.