Method and arrangement for cleaning filters
US6558443B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Sep 1, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/71
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method and apparatus for cleaning filters in which raw gas with particles suspended therein is conducted from a raw gas space to a clean gas space and through which intermittently a back-flushing gas is conducted from the clean gas space to the raw gas space, a flow dynamic control element is disposed in the clean gas space which blocks the outflow of gas from the clean gas space when a back-flushing gas is admitted to the clean gas space under a pressure, which exceeds the filter operating pressure so as to prevent excessive back-flushing gas losses during back-flushing. The flow dynamic control element is switched between an open and a blocking state by the pressure changes in the clean gas space without including any movable parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.