Ultrahigh-pressure fan jet nozzle

• Main Authors: TREMOULET, JR.; OLIVIER L, RAGHAVAN; CHIDAMBARAM, TING; EDMUND Y, BUCHBERGER; ANTON H
• Format: Patent
• Language: English
• Published: 01.02.2000
• Edition: 7
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; COMBINED OPERATIONS; CUTTING; CUTTING-OUT; HAND CUTTING TOOLS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; NOZZLES; OTHER WORKING OF METAL; PERFORATING; PERFORMING OPERATIONS; PUNCHING; SEVERING; SEVERING BY MEANS OTHER THAN CUTTING; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; STAMPING-OUT; TRANSPORTING; UNIVERSAL MACHINE TOOLS

A nozzle for producing an ultrahigh-pressure fluid fan jet is shown and described. In a preferred embodiment, the nozzle has an inner surface defined by a conical bore extending from a first end to a second end, thereby creating an entrance orifice and an exit orifice in the first and second ends, respectively. A wedge-shaped notch extends inward from the second end towards the first end to a sufficient depth such that the shape of the exit orifice is defined by the intersection of the conical bore and the wedge-shaped notch. As pressurized fluid passes through the nozzle and out the exit orifice, the shape of the exit orifice causes the pressurized fluid to exit in the form of a fan jet having a substantially oval cross-section. This fan jet may be swept across a surface to be cleaned thereby selectively removing a layer of material from an underlying surface evenly and completely, without damaging the underlying surface. The fan jet may also be used to cut a fibrous or hard material.