COMBINED AIR FILTRATION SYSTEM Russian patent published in 2024 - IPC B01D46/62 

FIELD: air filtration systems.

SUBSTANCE: disclosed is a combined air filtration system consisting of first, second and third stage filters, detachably connected to each other and providing a single air flow. First stage filter is a coarse filter with a gap made between the housing and filtration material on the air outlet side. Second stage filter is a fine filter, the box of which is equipped with a fastener and a shelf, as well as a connecting flange made with possibility of overlapping installation on the third stage filter and having tenons on the air outlet side. Third stage filter is a finishing filter, comprising a mounting frame with filtration modules fixed on it, made with slots and equipped with a closed-cell foam seal at the filter outlet, wherein filtration modules are equipped with outer protective screen on air outlet side.

EFFECT: providing a synergetic effect of a combined air filtration system, namely increasing the efficiency of the combined air filtration system, reducing the total pressure drop on the combined air filtration system; increased service life of the final cleaning filter.

13 cl, 27 dwg, 3 tbl