FIELD: systems for air cleaning by means of electrostatic separation of solid particles with use of electric filters. SUBSTANCE: double-zone filter includes ionizer having corona-discharge electrodes and plate-type non-corona electrodes mounted in parallel relative to air flow; settler and two metallic gauzes electrically connected with non-corona discharge electrodes. One gauze is placed in ionizer at side of settler normally relative to air flow; other gauze is placed at inlet of ionizer. EFFECT: enhanced operational efficiency. 1 dwg
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