Self-cleaning air filter
US4504293A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1983 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Jun 28, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2265/025
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved self-cleaning air filter (2) of the pulse jet type. The filter includes at least one filter element (20) located in a dirty air plenum (6) which is separated from a clean air plenum (8). A valve (64) directs a cleaning jet of gas that moves in a back flow direction along the filter element to remove accumulated contaminants therefrom. A diffuser is located in the clean air plenum for diffusing the cleaning jet of gas to convert the cleaning jet to a high volume, low pressure jet which substantially fills the entire cross-sectional area of the filter element. The filter element is releasably contained inside the dirty air plenum on elongated support members (36). Rotatable cams (44) are provided for laterally shifting the filter element to lock the filter element in place against a dividing wall (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.