US 6,145,758 A · Variable arc spray nozzle

Abstract

A variable arc spray nozzle is provided for delivering irrigation water to a surrounding terrain area in a spray pattern of variably adjustable arcuate width. The spray nozzle is adapted for mounting onto the upper end of a water supply riser, and includes a rotatable adjustment collar which cooperates with an upper deflector to define a discharge orifice of variably selected arcuate width. A stabilizer vane on the adjustment collar protrudes generally upstream at the adjustable side edge of the discharge orifice to tailor the associated side edge of the resultant spray pattern for improved water distribution and range. The deflector additionally includes a substantially horizontal step formed at the upstream side of the discharge orifice to produce a localized pressure loss resulting in improved water distribution across the variable width of the spray pattern. This horizontal step leads to a radially outwardly inclined deflector surface which is interrupted by a substantially vertical step at the downstream side of the discharge orifice for increasing the trajectory and range of throw for the discharged water stream.

Claims21

Dependent claims

A variable arc spray nozzle, comprising:

a tubular nozzle body adapted for coupling to a supply of water under pressure;
first and second nozzle members carried by said nozzle body and cooperatively defining opposite side edges of a discharge orifice for radially outward projection of water from the spray nozzle, said first nozzle member being movable with respect to said second nozzle member for defining a movable side edge of said discharge orifice whereby the arcuate width of said discharge orifice and a resultant spray pattern of water projected therefrom can be variably adjusted;
said first nozzle member including a stabilizer vane projecting upstream from said discharge orifice at said movable side edge thereof for tailoring the water distribution and range of throw of the resultant spray pattern at one side edge thereof;
and
one of said first and second nozzle members comprising a deflector defining a substantially horizontal annular inner step disposed at an upstream side of said discharge orifice, an inner deflector segment extending radially outwardly from said inner step with a selected inclination angle, said inner deflector segment merging with a substantially vertical annular outer step disposed at a downstream side of said discharge orifice, and an outer deflector segment extending radially outwardly from said outer step with a selected inclination angle.

2 more elements

A variable arc spray nozzle, comprising:

a tubular nozzle body adapted for coupling to a supply of water under pressure;
an adjustment collar rotatably mounted on said nozzle body;
a deflector mounted on said nozzle body above said adjustment collar, said adjustment collar and said deflector cooperatively defining a discharge orifice for radially outward projection of water from the spray nozzle, said adjustment collar being movable with respect to said deflector for movably positioning one side edge of said discharge orifice whereby the arcuate width of said discharge orifice and a resultant spray pattern of water projected therefrom can be variably adjusted;
said adjustment collar further including a stabilizer vane projecting upstream from said discharge orifice at said one side edge thereof;
and
said deflector defining a substantially horizontal annular inner step disposed at an upstream side of said discharge orifice, an inner deflector segment extending radially outwardly from said inner step with a selected inclination angle, said inner deflector segment merging with a substantially vertical annular outer step disposed at a downstream side of said discharge orifice, and an outer deflector segment extending radially outwardly from said outer step with a selected inclination angle.

3 more elements

Dependencies are inferred from the claim text.

Variable arc spray nozzle

Life of this patent

Variable arc spray nozzle

Life of this patent

Abstract

Claims21