US Patent 8991727 Mist generating apparatus and method

An apparatus for generating a mist is provided. The apparatus has at least one working fluid supply conduit having an inlet in fluid communication with a supply of working fluid and an outlet in fluid communication with a first mixing chamber. The apparatus also includes a plurality of transport fluid passages, each of which has an inlet adapted to receive a supply of transport fluid and an outlet in fluid communication with the mixing chamber. Downstream of the mixing chamber is a nozzle having an inlet in fluid communication with the mixing chamber, an outlet, and a throat portion intermediate the nozzle inlet and outlet. The throat portion of the nozzle has a cross sectional area which is less than that of either the nozzle inlet or the nozzle outlet. The apparatus enhances the atomization of the working fluid to generate the mist.