Apparatus for creating a vortex ring bubble in a fluid

摘要

The apparatus comprises a source of pressurised gas e.g a pump 4, an accumulator 3 directly connected to the output of the source of pressurised gas for receiving pressurised gas therefrom, a controlled outlet valve 2 connected to an output of the accumulator to supply pressurised gas into a body, and a vent valve 5 provided between the output of the source of pressurised gas 4 and the accumulator 3 and operable to relieve pressure in the apparatus. This allows continuous operation of the source whilst the outlet valve 2 operates intermittently to produce the bubbles.