Electrostatic air cleaner

Claim 1

An electrostatic air cleaning device comprising: a. opposed supporting walls of insulating material having opposed, substantially planar, inner faces, b. first elongated insulated recesses in at least one of said inner faces, substantially parallel to the air flow through said device, c. each of said first recesses having an open upstream end and a closed downstream end, d. second elongated recesses in at least said one of saId inner faces, parallel to and alternating with said first recesses, e. each of said second recesses having an open downstream end and a closed upstream end, f. an elongated upstream conductor recess extending transversely in at least said one of said inner faces in open communication with said open upstream ends, and substantially coplanar with said first recesses, g. an elongated downstream conductor recess extending transversely in at least said one of said inner faces in open communication with said open downstream ends, and substantially coplanar with said second recesses, h. an elongated upstream conductor longitudinally received in said upstream conductor recess, i. an elongated downstream conductor longitudinally received in said downstream conductor recess, j. first collector plates extending between said supporting walls, k. each of said first collector plates having upstream and downstream edges and being received in a first recess so that said upstream edges project through said open upstream ends into said upstream conductor recess to mechanically and electrically contact said upstream conductor, l. second collector plates extending between said supporting walls, m. each of said second collector plates having upstream and downstream edges and being received in a second recess so that said downstream edges project through said open downstream ends into said downstream conductor recess to mechanically and electrically contact said downstream conductor, n. means for applying an electrical voltage to one of said conductors. o. means for electrically grounding said other conductor, p. ionizing means upstream of said upstream conductor comprising ionizer electrodes extending between said opposed supporting walls.