Air cleansing unit, e.g. for killing microorganisms, comprises filter with acid and alkaline filter layers comprising fleece-type fabrics, charcoal layer and fixing grease

摘要

An arrangement for cleansing air comprises a filter (1) with an acid filter layer (2) and an alkaline filter layer (3). The acid and/or alkaline filter layers consist of fleece-type fabrics that contain fine acid or alkaline substances. The fine substances are fixed using a grease. The filter also has an active charcoal layer (5) and an air outlet.