Rotary Nozzles and Deflectors
AssigneeRain Bird Corporation
InventorsLee James Shadbolt, David Eugene Robertson
Life of this patent
Estimating the term…
Abstract
Rotary nozzles and deflectors for use with rotary nozzles are provided. The deflector includes a number of flutes that deliver fluid streams radially outwardly from the deflector. Fluid striking the flutes of the deflector cause the deflector to rotate, and the flutes subdivide fluid impacting deflector into multiple fluid streams that are distributed radially outwardly to surrounding terrain as the deflector rotates. Each of the flutes have the same curvature, although they may have different inclinations to distribute fluid streams at different trajectories. The flutes may also include blocking and downward-facing features at the ends of the flutes to improve the evenness of the fluid distribution in the irrigation coverage area.
Claims24
A deflector for a rotary nozzle comprising:
- an underside surface including a plurality of flutes contoured to cause rotation of the deflector about a central axis when fluid impacts the underside surface and to redirect the fluid away from the underside surface in a plurality of streams;
- each of the plurality of flutes including a first sidewall and a second sidewall defining a channel therebetween, each channel extending from an inner end to an outlet end and defining a predetermined radius of curvature along at least a portion of the channel length from the inner end to the outlet end;
- and
- at least one of the plurality of flutes comprising:
- an angled wall at the outlet end of one of the channels, the angled wall defining an immediate transition with one of the first and second sidewalls of the flute such that the angled wall is not coextensive with the one of the first and second sidewalls.
A deflector for a rotary nozzle comprising:
- an underside surface including a plurality of flutes contoured to cause rotation of the deflector about a central axis when fluid impacts the underside surface and to redirect the fluid away from the underside surface in a plurality of streams;
- each of the plurality of flutes including a first sidewall and a second sidewall defining a channel therebetween, each channel extending from an inner end to an outlet end and defining a predetermined radius of curvature along at least a portion of the channel length from the inner end to the outlet end;
- and
- at least one of the plurality of flutes comprising:
- a first ramp at the outlet end of one of the channels, the first ramp defining a first immediate transition with one of the first and second sidewalls and being adjacent therewith;
- and
- a second ramp at the outlet end of the channel, the second ramp defining a second immediate transition with the other one of the first and second sidewalls and being adjacent therewith.
A deflector for a rotary nozzle comprising:
- an underside surface including a plurality of flutes contoured to cause rotation of the deflector about a central axis when fluid impacts the underside surface and to redirect the fluid away from the underside surface in a plurality of streams;
- each of the plurality of flutes including a first sidewall and a second sidewall defining a channel therebetween, each channel extending from an inner end to an outlet end and defining a predetermined radius of curvature along at least a portion of the channel length from the inner end to the outlet end;
- and
- a bottom portion defining a bore in the deflector, the bottom portion comprising a plurality of teeth recessed within the deflector.
A rotary nozzle comprising:
- a deflector comprising:
- an underside surface including a plurality of flutes contoured to cause rotation of the deflector about a central axis when fluid impacts the underside surface and to redirect the fluid away from the underside surface in a plurality of streams;
- each of the plurality of flutes including a first sidewall and a second sidewall defining a channel therebetween, each channel extending from an inner end to an outlet end and defining a predetermined radius of curvature along at least a portion of the channel length from the inner end to the outlet end;
- and
- at least one of the plurality of flutes comprising:
- an angled wall at the outlet end of one of the channels, the angled wall defining an immediate transition with one of the first and second sidewalls of the flute such that the angled wall is not coextensive with the one of the first and second sidewalls;
- and
- a nozzle body defining an inlet and an outlet, the inlet configured to receive fluid from a source and the outlet configured to deliver fluid to the underside surface of the deflector.
Dependencies are inferred from the claim text.