Portable water driven high velocity fan

Claim 1

A portable water driven fan comprising: (a) a generally cylindrically shaped fan housing open to the passage of air at both ends; (b) at least two shaft bearings; (c) a shaft bearing support means contained in said housing and for supporting said at least two bearings; (d) a shaft supported by said at least two bearings and defining a shaft axis; (e) a turbine nozzle body defining a turbine nozzle outlet surface and positioned inside said housing and firmly attached, to said housing and comprising a turbine inlet cavity and a plurality of nozzles each of said nozzles providing a passageway for water to pass from said turbine inlet cavity to said turbine nozzle outlet surface and defining a nozzle centerline, where each of nozzle centerlines: (1) intersects said turbine nozzle outlet surface at points of intersection on a circle defining a nozzle exit circle which circle is concentric about said shaft axis and defines a nozzle exit plane which is perpendicular to said axis and (2) forms an angle of about 10 to 30 degrees with said nozzle exit plane; (f) a water inlet means for providing water under pressure to said water cavity; (g) an axial flow bladed impeller solidly attached at one end of the said shaft; (h) an axial flow water turbine wheel solidly attached at the other end of said shaft and fully submerged in water having a plurality of turbine blades, said wheel and blades being positioned adjacent to said turbine body outlet surface such that water discharged from said nozzles impinge on said blades;

Claim 6

A method of manufacturing portable water driven fans having: (a) a generally cylindrical shaped fan housing open to the passage of air at both ends: (b) at least two shaft bearings; (c) a shaft bearing support means contained in said housing and for supporting said at least two bearings; (d) a shaft supported by said at least two bearings and defining a shaft axis; (e) a turbine nozzle body defining a turbine body outlet surface and positioned inside said housing and solidly connected to said housing and comprising a turbine inlet cavity and a plurality of nozzles each of said nozzles providing a passageway for water to pass from said turbine inlet cavity to said outlet surface and defining a nozzle centerline, where each of nozzle centerlines: (1) intersects said turbine body outlet surface at points of intersection on a circle defining a nozzle exit circle which circle is concentric about said shaft axis and defines nozzle exit plane which is perpendicular to said axis and (2) forms an angle of about 10 to 30 degrees with said nozzle exit plane; (f) a turbine inlet means for providing water under pressure to said water cavity; (g) an axial flow bladed impeller solidly attached at one end of said shaft; (h) an axial flow water turbine wheel solidly attached at the other end of said shaft having a plurality of turbine blades, said wheel and blades being positioned adjacent to said turbine body outlet surface such that water discharged from said nozzles impinge in said blades; said method comprising: producing a first model of said fan having a standard output rating and also producing at least one higher output model of said fan having substantially increased power output as compared to said first model without any significant decrease in efficiency by enlarging the diameter of said plurality of nozzles of said first model by machining said turbine nozzle body of said first model so that said turbine body outlet surface is closer to said water cavity, repositioning said water turbine wheel on said shaft to maintain essentially the same relative distance between said water turbine wheel and said turbine body outlet surface as compared to said first model and using a water turbine wheel having turbine blades larger than those for said first model.

Claim 7

A method of manufacturing portable water driven fans having: (a) a generally cylindrical shaped fan housing open to the passage of air at both ends: (b) at least two shaft bearings; (c) a shaft bearing support means contained in said housing and for supporting said at least two bearings; (d) a shaft supported by said at least two bearings and defining a shaft axis; (e) a turbine nozzle body defining a turbine body outlet surface and positioned inside said housing and solidly connected to said housing and comprising a turbine inlet cavity and a plurality of nozzles each of said nozzles providing a passageway for water to pass from said turbine inlet cavity to said outlet surface and defining a nozzle centerline, where each of nozzle centerlines: (1) intersects said turbine body outlet surface at points of intersection on a circle defining a nozzle exit circle which circle is concentric about said shaft axis and defines nozzle exit plane which is perpendicular to said axis and (2) forms an angle of about 10 to 30 degrees with said nozzle exit plane; (f) a turbine inlet means for providing water under pressure to said water cavity; (g) an axial flow bladed impeller solidly attached at one end of said shaft; (h) an axial flow water turbine wheel solidly attached at the other end of said shaft having a plurality of turbine blades, said wheel and blades being positioned adjacent to said turbine body outlet surface such that water discharged from said nozzles impinge in said blades; said method comprising: producing a first model of said fan having a standard output rating and also producing at least one higher output model of said fan having substantially increased power output as compared to said first model without any significant decrease in efficiency by enlarging the diameter of said plurality of nozzles of said first model by machining said turbine nozzle body of said first model so that said turbine body outlet surface is closer to said water cavity, repositioning said water turbine wheel on said shaft to maintain essentially the same relative distance between said water turbine wheel and said turbine body outlet surface as compared to said first model and using a water turbine wheel having turbine blades larger than those for said first model.