Electrostatic air cleaning apparatus

DETAILED DESCRIPTION Accordingly, it is an object of the invention to manufacture a compact high performing electrostatic air cleaning apparatus.
It is a further object of this invention to reduce the cost of manufacturing electrostatic air cleaning apparatus without impairing its operating performance.
It is a further object of this invention to manufacture a collector section having alternately charged and grounded grids sandwiching therebetween a sheet of foraminous filter media wherein such collector section is of compact design.
It is a further object of this invention to maintain the plates of the grounded grids uniformly spaced from the plates of the charged grid.
These and other objects of the present invention are obtained in an electrostatic air cleaning apparatus having a source of relatively large magnitude electrical voltage.
The apparatus includes a cell comprising a charged ionizing section and a collecting section comprising a charged grid and a grounded grid sandwiching therebetween a sheet of foraminous filter media.
One of the grids is movable relative to the other grid.
A single bus bar electrically connects the ionizing section and the charged grid to the source of voltage.
The movable grid is accurately positioned with respect to the stationary grid via support surfaces.
Retainers maintain the movable grid in its desired position.