Reverse-flow nozzle for generating cavitating or pulsed jets

摘要

A reverse-flow nozzle generates a cavitating and/or pulsed jet of pressurized liquid. The nozzle includes a body (10) having an inlet (12) for receiving a stream of liquid and a main channel (12, 14, 16, 20, 18, 22) through the body (10) extending from the inlet (12) to an outlet (18). A flow-reversing channel in the nozzle diverts a portion of the liquid from the main channel (12, 14, 16, 20 18, 22) to a point downstream of a mixing chamber (20). The channel returns the diverted liquid back into the mixing chamber (20) as a reverse-flow jet relative to a main stream of liquid flowing toward the outlet (18). This reverse-flow jet interacts with the main stream to generate the cavitating jet that discharges from the outlet (18). By angling the reverse-flow jet relative to the main stream, a naturally pulsed jet may be generated.