US Patent 7946299 Spray jet cleaning apparatus and method

A spray cleaning device having an atomizing unit with at least one gas passage and at least one cleaning fluid passage converging into a atomizing area. The gas flowing though the gas passage and the cleaning fluid flowing through the cleaning fluid passages combine to form a mixture at the atomizing area. The accelerating unit has an acceleration passage for spraying the mixture onto a substrate surface. The gas passages are preferably angled with respect to the cleaning acceleration passage.