FOLDED FILTER AND METHOD OF ITS FABRICATION Russian patent published in 2010 - IPC B01D46/52 

FIELD: process engineering.

SUBSTANCE: invention relates to appliance intended for cleaning air of solid suspended particles and can be used in surface gas turbine plants. Folded filter housing consists of outer and inner halves. Sizes of inner half are smaller than those of outer half by four thicknesses of filter element material. Walls of inner half have cuts to accommodate filter-element material. Width of said cuts, if seen in direction of zigzag-like corrugations of filter element makes two thicknesses of its material, while cut height equal that of tips along zigzag-like corrugations. Method of filter fabrication consists in preliminary fitting of filter element into inner half. Filter element material side edges are fitted into cuts of inner half so that tips of zigzag- and saw-like lines are located on outer side of inner half. Then inner half with filter element is fitted into outer half so that tips along zigzag- and saw-like lines are located between outer and inner halves to move outer half inside against the stop against outer half bottom flange and makes latches operate.

EFFECT: higher dust absorption, reduced weight and sizes, lower fabrication costs.

5 cl, 7 dwg