Fluid mixer

A fluidic mixer comprising:

• a housing having an oscillation vortex mixing chamber with an upstream end and a downstream end, said oscillation vortex mixing chamber having a pair of curved sidewalls which first diverge in a downstream direction from said upstream end to a point of maximum divergence and then converge towards said downstream end,
• a power nozzle at said upstream end of said oscillation vortex mixing chamber, said power nozzle being adapted to be coupled to a source of carrier liquid under pressure for issuing a jet of carrier liquid into said oscillation vortex mixing chamber,
• at least one outlet from said mixing chamber, and
• a pair of control ports at said upstream end of said oscillation vortex mixing chamber such that said jet of carrier liquid entrains fluent material alternately from said control ports,
• and passages for coupling said pair of control ports to one or more fluent material source for mixing by vortex action in said oscillation vortex mixing chamber with said jet of carrier liquid prior to exiting from said oscillation vortex mixing chamber through said at least one outlet,
• whereby when said jet of carrier liquid entrains fluent material from said control ports, said jet of carrier liquid oscillates and oscillation of said jet of carrier liquid stops when entrainment of fluent material through said control ports ceases.