ELECTRIC AIR CLEANER Russian patent published in 2010 - IPC B03C3/08 

FIELD: process engineering.

SUBSTANCE: invention relates to air cleaning systems, namely to electric cleaners and can be used at industrial enterprises, in medicine, kindergartens, educational entities, as well as at home for cleaning air of dust and other impurities. Proposed electric air cleaner comprises one wire corona-forming electrode, set of linear precipitation electrodes, set of repellant electrodes, and source of bipolar voltage to generate difference of potentials. Precipitation electrode comprises bulge on front edge and band arranged behind said bulge. Repellant band-type electrode comprises bulge on front edge and band arranged behind said bulge. Said bipolar voltage source serves to generate difference of potentials between corona-forming and precipitation electrodes varying from 10 kV to 100 kV and that between repellant and precipitation electrodes determined from ratio below: P=pH, where P is difference of potentials between repellant electrode and precipitation electrode, kV; p is the measure varying from 1 kV/cm to 20 kV/cm; H is minimum distance between repellant and precipitation electrodes, cm. Note here that power supply can ensure ripple factor of 30% and bands of precipitation electrodes are arranged in parallel and regularly. Emitting surface of corona-forming electrode is equidistant from precipitation electrode bulges absorbing ions. In lengthwise cross section of proposed cleaner, angle between lines connecting, along beeline, the surface of corona-forming electrode and ion-absorbing surfaces of extreme precipitation electrodes varies from 25° to 180°. Repellant electrodes are arranged between precipitation electrodes while bands of repellant electrodes are parallel to those of precipitation electrodes. Repellant electrode band is equidistant from the bands of nearest precipitation electrode bands. Note here that the number of precipitation electrodes varies from 4 to 100. The casing comprises sidewalls with their inner surfaces accommodating the end face of wire corona-forming electrode, end faces of precipitation and repellant electrodes. Note also that inner surface of every sidewall accommodates, between corona-forming electrode and precipitation electrodes at least one shoulder with its height and thickness varying from 0.01 to 0.5 and from 0.001 to 0.1, respectively, of the lines connecting along beeline the emitting surface of corona-forming electrode and ion-absorbing surface of precipitation electrode. Said electric cleaner can generate airflow forced from casing inlets to outlets by electric charges moving from corona-forming electrode corona to precipitation electrode.

EFFECT: higher efficiency and quality of air cleaning without excess ozone content in cleaned air.

4 cl, 20 dwg