Electrostatic air cleaner with scraper cleaning of collector plates

In combination in an electrostatic air cleaner having a member defining an air passage and two groups of spaced normally interposed relatively shiftable collector plates adapted to be oppositely electrically charged, said groups being normally stationary in interposed relation in said member,

• an ionizer grid in said member adapted to be electrically charged comprising two oppositely charged groups of normally interposed spaced relatively shiftable ionizer elements parallel to each other and to said collector plates and spaced from said collector plates,
• scraping means positioned and arranged with respect to said groups of ionizer elements and with said groups of collector plates to scrape said ionizer elements and said groups of collector plates, and
• means for shifting one group of collector plates, one group of ionizer elements and one scraping means relative to the other group of collector plates, the other group of ionizer elements and the other scraping means.

In combination in an electrostatic air cleaner having a member defining an air passage and two relatively shiftable groups of spaced collector plates having at least a part positioned in said member and adapted to be oppositely electrically charged and two groups of relatively shiftable ionizer grid elements adapted to be electrically charged and comprising;

• a group of spaced parallel wires tensioned parallel to said collector plates between an upper and lower support member, and
• a group of spaced parallel ionizer plates spaced from and parallel to said wires, one group of said collector plates and said ionizer elements being shiftable relative to the other group of collector plates and ionizer elements between a use position and a cleaning position, said groups of plates and ionizer elements being interposed in use position and being withdrawn from interposed relation in cleaning position,
• and scraping means positioned relative to each group of collector plates and ionizer plates to remove debris therefrom upon relative shifting of said groups.

In an electrostatic air cleaner having a member defining an air passage and two groups of spaced interposed collector plates having at least a part thereof positioned in said member and adapted to be electrically charged, the improvement therein comprising,

• means connecting together the plates of each group,
• shiftable means mounting plates of one group for movement between a use position in which the plates of said groups are interposed and a cleaning position in which the plates of said groups are withdrawn to spaced position, and
• scraping means juxtaposed to the plates of both groups for cleaning said plates of both groups incident to relative movement of said groups between their use and their cleaning positions.