Back to results
US 11,000,866 B2Granted
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, each channel extending outwardly in a radial direction from the inner end to define a linear inner portion and then extending into a curved outer portion having the predetermined radius of curvature, each curved outer portion extending in a same direction of curvature and defining the direction of curvature of the channels;
- and
- a first group of one or more flutes of the plurality of flutes, each flute in the first group comprising:
- a first sidewall terminating in an angled wall at the outlet end of downstream of the curved portion of the channel, the angled wall defining an immediate transition with the first sidewall such that the angled wall is not coextensive with the first sidewall.
2 more elements
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, each channel extending outwardly in a radial direction from the inner end to define a linear inner portion and then extending into a curved outer portion having the predetermined radius of curvature, each curved outer portion extending in a same direction of curvature and defining the direction of curvature of the channels;
- and
- a first group of one or more flutes of the plurality of flutes, each flute in the first group comprising:
- a first ramp decreasing the depth of at least a portion of the channel when approaching the outlet end of the channel, the first ramp defining a first immediate transition with the first sidewall and being adjacent therewith;
- and
- a second ramp decreasing the depth of at least a portion of the channel when approaching the outlet end of the channel, the second ramp defining a second immediate transition with the second sidewall and being adjacent therewith.
4 more elements
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.
1 more element
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, each channel extending outwardly in a radial direction from the inner end to define a linear inner portion and then extending into a curved outer portion having the predetermined radius of curvature, each curved outer portion extending in a same direction of curvature and defining the direction of curvature of the channels;
- and
- a first group of one or more flutes of the plurality of flutes, each flute in the first group comprising:
- a first sidewall terminating in an angled wall at the outlet end of downstream of the curved portion of the channel, the angled wall defining an immediate transition with the first sidewall such that the angled wall is not coextensive with the first sidewall;
- 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.
5 more elements
Dependencies are inferred from the claim text.