Method and apparatus for generating a mist

Fog generating device comprising: a conduit (2) defining a channel (3) with a mixing chamber (3A, 9) and an outlet (5); transport nozzle (16) in fluid communication with said conduit (2), the transport nozzle (16) adapted to introduce a transport fluid into the mixing chamber (3A, 9) being; a nozzle working (34) located adjacent the nozzle transport (16) between the nozzle transport (16) and the outlet (5), the nozzle work (34) adapted to introduce a working fluid into the chamber being mixing (3A, 9); wherein the transport nozzle (16) includes a convergent-divergent part in the same manner as in use to provide a flow generation high speed transport fluid; and characterized in that the nozzles transport and working (16, 34) substantially circumscribe the channel (3) so that in use the working fluid is atomised and a flow rate of droplets dispersed droplets is created with a uniform size considerably in the mixing chamber (3A, 9) by introducing the flow of transport fluid nozzle carriage (16) to flow working fluid from the nozzle work (34) and the working fluid back shear by the transport fluid.