Method e.g. for air conditioning systems, involves having gaseous medium to filter and or in gaseous medium available to filter particles before passing filter

摘要

The method involves having a gaseous medium to filter and or in the gaseous medium available to filter particles before passing a filter so that output performance in isolation of filter element (1) and electrostatically charged in the filter element (1) has discharge of the medium and or the particles taking place. An independent claim is included for a device.