Air cleaner assembly

Claim 1

An electrically energized air cleaner comprising: a housing of generally box-shaped configuration, having a front side with an air intake grill, a back side arranged to be placed against a wall, and a top plate with a fresh air outlet therein; a mechanical pre-filter screen mounted within said housing adjacent said air intake grill; an electrostatic precipitator mounted within said housing on the inner side of said mechanical pre-filter screen; a motor and fan assembly mounted within said housing adjacent said back side of the housing; a main filter cartridge mounted within said housing between said electrostatic precipitator and said motor and fan assembly, said main filter cartridge being easily removable by withdrawing it from the bottom of said housing, and including (a) a synthetic mesh media made of non-conductive fiber with electrical charges embedded therein; and (b) a plastic screen impregnated with activated carbon powder; at least one ionizing needle charged at a negative electrical potential, positioned within said housing below said fresh air outlet and within the pathway of fresh air being discharged; an air quality sensing device mounted in said housing in communication with outside air and having coupled therewith an adjustable control for selecting a level of air quality to be achieved; and an automatic control located in said top plate and cooperatively coupled with said air quality sensing device so as to keep the motor, electrostatic precipitator, and ionizing needle energized so long as room air sampled by said sensing device does not meet the selected air quality level.