METHOD OF DISINFECTING AIR WITH NEGATIVE OXYGEN IONS AND DEVICE FOR IMPLEMENTING THE SAME Russian patent published in 2008 - IPC A61L9/22 

FIELD: air purification methods.

SUBSTANCE: method of disinfecting air with negative oxygen ions, which can be used in input ventilation systems for living and production spaces, resides in that air is treated with alpha particle flow, after which positive ions present in air are reduced into neutral molecules while simultaneously lowering energy of free electrons contained in air so that their energy lie in the range 0.4-2.0 eV to ensure formation of negative oxygen ions. Thus treated air, prior to be supplied into a room, is kept for 0.5 to 4.0 s and proceeded to lower concentration of negative oxygen ions. Appropriate device comprises in series connected supply air duct, chamber, discharge air duct, and air duct to feed disinfected air into a room. Chamber encloses at least one α-particle source mounted on at least one plate and downstream of the latter at least one electrode is located, said electrode being made in the form of conducting screen oriented transversally to air flow and being linked to negative lead of direct voltage source whose positive output is grounded. In air duct serving to feed disinfected air into a room, at least one electrode is located made in the form of conducting screen linked to positive lead of direct voltage source, whose negative output is grounded. Walls of the chamber and plate are made of non-conducting material and plate is provided with recesses wherein α-particle sources are placed, the depth of these recesses is by at least 2 mm superior to thickness of α-particle source and distance between adjacent to each other electrode and α-particle source does not exceed 20 mm, voltage on electrode being between 0.2 and 1.0 kV. Discharge air duct in the device according to invention may have deviation air duct incorporating electrode made in the form of conducting screen oriented transversally air flow and linked to negative lead of direct voltage source whose positive output is grounded.

EFFECT: accelerated and improved air disinfection, and prevented abrasive wear of α-particle source.

7 cl, 2 dwg, 1 tbl