Air filtering apparatus
US4193779A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1978 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Aug 11, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/13
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus which serves to clean air containing fine dust and also larger particles, such as fibrous material, thread ends, etc., which are produced in an industrial environment, especially a textile plant. In order to conduct a two-stage cleaning process without the necessity of dimensioning two filtering stages for the full air flow, there is provided a vortex chamber into which the unclean air is admitted tangentially or in some manner which produces a rotary flow with centrifugal force components which act on the larger particles in the air stream. The vortex chamber includes a rotating filter drum, the interior of which may preferably be provided with suction, causing air to flow from the vortex chamber through the filter, depositing thereon the fine dust carried by the incoming air. The clean air is conducted out of the apparatus through a clean air outlet while the larger contaminants are conducted out of the vortex chamber through a separate outlet by a relatively small fraction of the total air flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.