FILTER FOR CLEANING AIR FROM SOLID AND LIQUID AEROSOLS Russian patent published in 2003 - IPC

FIELD: air filtration systems; fine and coarse cleaning of air fed to rooms. SUBSTANCE: proposed filter includes prefilter, filter element located coaxially with inner perforated cylinder, cover and bottom. Filter element is made in form plicate material on base of fine fibers; it is located coaxially with external perforated cylinder on which prefilter made from coarse fibers is located. Ratio of diameters of fibers of filter element and prefilter is equal to 1: (20-30) and ratio of diameter of inner perforated cylinder, inner and outer diameters of filter element and inner and outer diameters of prefilter is equal to 1: (1.005-1.023) : (1.470-1.535) : (1.674-1.721). EFFECT: enhanced efficiency; increase of dust capacity by 2-3 times; increased service life. 2 dwg