Fluid purification system
US4244820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1978 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | May 16, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/2016
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid purification system for performing filtration of particles from a feed liquid by a tangential flow of the feed liquid over a membrane surface. In one embodiment, the purification system includes a filter cartridge contained within a filter housing having ports permitting ingress and egress of feed liquid and filtrate. The cartridge includes a filter element having a layered construction with a thin flow channel between the layers. One layer of the filter element is formed of a sheet of impervious material defining one wall of the thin flow channel. Another layer of the filter element is spaced from the one layer and formed of a sheet of permeable membrane material and defines another wall of the thin flow channel. The spacing between the walls of the thin flow channel is maintained by a sheet of reticular material that provides turbulence in the thin flow channel to promote cross flow filtration. The filter element is formed into a pleated, cylindrical shape with a flow axis parallel to the pleats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.