Patent ID: 6656017
Filing Date: 2003-12-02
Classification: B08B,B24C,H01L

Abstract:
An apparatus to be used while treating a surface of a substrate positioned on a surface of a conveyor with a snow or steam spray cleaning device comprising:a shroud defining an internal cavity having a longitudinal axis for encasing at least a portion of the conveyor, a first inlet in the shroud for providing access to a first location on the conveyor surface; an outlet in the shroud, spaced apart from the first inlet, for providing access to a second location on the conveyor surface; a clean air plenum disposed within the internal cavity on one side of the conveyor surface and oriented to deliver a laminar sheath of clean air from behind the substrate which flows at an angle which is not incident to the substrate surface; a clean air inlet for supplying clean air to internal cavity through the clean air plenum; a return air plenum disposed within the internal cavity opposing the clean air plenum; an outlet pipe for withdrawing air from the internal cavity through the return air plenum for; and a second inlet in the shroud for the snow or spray cleaning device.