ELECTROSTATIC FILTRATION APPARATUS AND ELECTROSTATIC CHARGING UNIT Russian patent published in 2021 - IPC B03C3/04 B01D35/06 

FIELD: ventilation.

SUBSTANCE: proposed group of inventions relates to the field of ventilation, predominantly to gas purification sets in systems for supply and exhaust ventilation allowing for simultaneous filtering of particles, inactivation (destruction) of all types of microorganisms, purification of the air from odours and hazardous gases. The electrostatic filtration apparatus includes an electrostatic charging unit, an electric filter located after the electrostatic charging unit, a filter unit located after the electric filter and including at least one HEPA filter. The electrostatic charging unit includes corona electrodes and grounded electrodes, wherein the corona electrodes are made in the form of a metal filament mounted on an insulated base and tensioned along the grounded electrodes. The electric filter includes a bearing frame, installed wherein is a set of high-voltage and grounded electrode plates. An adsorption catalytic filter is additionally placed outside of the HEPA filter. The distance between the grounded and corona electrodes in the electrostatic charging unit is 16 to 17 millimeters.

EFFECT: increase in the efficiency of recycling of captured particles, structural simplification of the electrostatic filter with the maintained high degree of air purification.

14 cl, 3 dwg