Ecological filter of moderate cost, especially for the air conditioning circuit of automobiles and other vehicles and the corresponding method of fabrication

摘要

The body 1 of the filter is obtained by a die-cutting operation from a sheet of cardboard of suitable substance and water repellent and is formed by a plurality of walls, connected to each other by lines of articulation so that they can be formed and closed in the same way as a box. The body of the filter can be formed from a single piece of die-cut cardboard, or from several pieces, for example so as to form two open boxes that can telescope between them so as to close each other. Inside the box- like body of the filter, having a bottom 2 and a cover 102 with a suitable window or opening for the passage of the air being treated, air filtering and purification materials 18-19 are inserted. The filter has at least one lug 16 which facilitates its mounting and dismounting and which can be used to lock the filter itself in the appropriate seat. An appropriate seal 20 is mounted around the body of the filter or at least its walls intended to make contact with the seat. IMAGE