Patent 7306001 was granted and assigned to Aimm Technologies, Inc. on December, 2007 by the United States Patent and Trademark Office.
A method for cleaning tubes and heat exchangers provides a cavitation enhancement unit between a source of pressurized fluid an a lance. The pressurized fluid flows through jets, which impart a high speed rotation to a set of propellers, preferably square in profile canted at a 15° angle. Generation of cavitation develops a cleaning vibration in the fluid discharged from the lance.