Filter apparatus employing hollow fibers
US4869822A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Aug 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter apparatus comprises a housing having a liquid entrance, a liquid exit, and two tubes protruding from a wall of the housing into an inner space of the housing. The tubes have openings which face each other and have at least one perforation or side opening on their walls, one of the liquid entrance and the liquid exit being connected to one of the tubes. The detachable filter cartridge comprises an outer perforated cylinder, an inner non-perforated cylinder, the outer cylinder being connected to the inner cylinder in coaxial relationship such that a respective end space for receiving a liquid is formed inside each end of the outer cylinder. A bundle of porous hollow fibers is connected between the outer cylinder and the inner cylinder such that openings at both opposite ends of the hollow fibers open to allow passage of liquid from one end space for receiving liquid to another end space via the hollow fibers. The filter cartridge is arranged such that each open end of the inner cylinder sealingly receives therein a respective one of the tubes to form a liquid passage between the two tubes via the inner space of the inner cylinder, and a liquid passage between two tubes via t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.