FILTERING MODULE AND AIR FINE FILTER Russian patent published in 1995 - IPC

FIELD: cleaning air. SUBSTANCE: filtering unit has assembly of alternating flat and relief filtering members with flat end panels. All of the walls of the air duct are isomorphic over the structure of the filtering material. The panels of relief filtering members are arranged at the top and bottom planes of projections and hollows of the relief. Mated parts of the filtering members are rigidly interconnected to define stiffening ribs. The additional facility for sealing the air ducts is made up as monolithic layers of sealant interposed between the stiffening members. The sealing facility is made up as a projecting contour or side flange from the side of supplying and/or discharging air. The face walls of air ducts and panels are impregnated with securing material. The stiffening ribs are wedge-shaped and of variable density. Reinforcing members made of a conducting material is received in the stiffening members. The air fine filter has filtering material and housing members arranged over periphery from the side of supplying and discharging air and tightly connected to the filter. The housing members are T-shaped, L-shaped, Y-shaped or H- shaped in cross-section and has an additional facility for tight connection with the ventilation system. The facility is made up as projecting knife plates or closed groove for sealant. EFFECT: improved quality of cleaning. 8 cl, 19 dwg