FILTRATION DEVICE AND METHOD

摘要

The invention relates to a filtration device comprising at least one filter membrane, at least one counter-surface located opposite said filter membrane and at least one split-like fluid chamber -ocated between the filter membrane and the counter-surface. The invention also relates to a filtration method according to which a fluid is introduced into the split-like fluid chamber located between the filter membrane and the counter-surface and is moved relatively to the filter membrane and/or counter-surface. The aim of the invention is to improve said method and filtration device. For this purpose, the inventive filtration device comprises a disk at the circular surface of which at least the filter membrane or the counter-surface is formed. According to the inventive method, two helicoïdal swirls extending parallel to said filter membrane and said counter-surface are produced in the split-like fluid chamber, said swirls having the same rotation direction but radially opposite moving directions.