AIR CLEANING FILTER Russian patent published in 2002 - IPC

FIELD: cleaning air delivered to internal combustion engines from aerosols. SUBSTANCE: proposed filter has housing with cover, inlet and outlet branch pipes, circular concentric partitions made from filtering materials which are tightly secured at base located inside housing coaxially relative to it and fasteners. Circular concentric partitions made from filtering materials are tightly secured at bases in such way that two independent filter elements are formed; ratio outer diameter of inner filter element to inner diameter of outer filter element ranges from 1:1.04 to 1.14. Ratio of height of inner filter element to height of outer filter element ranges from 1:1.05 to 1.15. Ratio of width of circular partition of inner filter element to width of circular partition of outer filter element ranges from 1:4.5 to 5. Filter elements and cover are secured on housing by means of rod running through axis of symmetry of filter; this rod is immovably on outer branch pipe at one end. EFFECT: improved quality of cleaning air; increased service life due to periodic regeneration of filter when it gets dust laden. 2 dwg