Patent ID: 7717984

Claim:
An electrostatic precipitator unit for the use with a machine tool for removing liquid coolant and particles generated during operation of the machine tool, comprising a rectangular shaped cabinet having exterior vertical walls, a bottom wall and a grill defining the upper portion thereof, a fan mechanism mounted interiorly of the cabinet adjacent the grill for producing a vertical stream of air, and an air inlet in the bottom wall thereof through which a vertically directed air entrained stream containing coolant and particles pass, one of the vertical walls of the cabinet having an access door thereon for providing access to the interior of the cabinet, a rectangular shaped electrostatic precipitator cell positioned in the cabinet and being readily moveable into and out of the cabinet, said cell including a plurality of similar vertically disposed power fins and similar vertically disposed collector ground fins mounted thereon, said power fins and ground fins being arranged in alternating fashion, an ionizer grid including a plurality of spaced apart ionizer wires positioned below the power and ground fins, an electrical contact assembly including a dielectric support member, a pair of electrical contact members mounted on the support member and one contact member being connected to a source of high voltage electric current and the other contact member being connected to source of higher voltage current, means mounting the support member on the cabinet interiorly thereof including dielectric standoff elements spacing the support member from the cabinet and defining an insulating air gap between the support member and any ground medium, and a pair of electric contact elements on the cell each engaged by one of the contact members, one contact element electrically connected to the ionizer grid and the other contact member electrically connected to the power fins.