Adjustable arc of coverage cone nozzle rotary stream sprinkler

Abstract

A cone valve assembly including an upper valve member with a conical top portion and a stepped and spiraled top surface and a lower valve member including a central opening with a stepped and spiraled valve surface surrounding the central opening. The upper valve member is mounted in the lower valve member such that the lower valve member is rotatable and axially movable relative to the upper valve member. Rotation of the lower valve member allows for the adjustment of an arcuate slot opening that provides a conically shaped discharge stream of water from the cone valve nozzle assembly directly onto the rotating distributor to provide the desired arc of sprinkler coverage.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims benefit of and priority to U.S. Provisional Patent Application Ser. No. 61 / 829,776 entitled ADJUSTABLE ARC OF COVERAGE CONE NOZZLE FOR STREAM ROTARY SPRINKLER filed May 31, 2013, the entire content of which is hereby incorporated by reference herein.BACKGROUND[0002]1. Field of the Disclosure[0003]The present invention relates to a cone nozzle assembly for use in a rotary nozzle sprinkler as well as a stepped and spiraled matching upper and lower adjustable length arcuate slot nozzle for discharging water directly upwardly onto a rotating self driven and channeled distributor in combination with improved nozzle housing assemblies including a throttling valve, arc of coverage setting and secondary pop-up of the rotating distributor out of the nozzle housing assembly.[0004]2. Related Art[0005]Generally, conventional rotary stream sprinklers do not allow for arc of coverage adjustment of more that 120 degrees, o...

AI Technical Summary

Benefits of technology

This patent is about a new kind of nozzle that can be used in a sprinkler system. The nozzle has a unique design that allows for better discharge of water onto a rotating distributor, resulting in better uniformity and performance of the sprinkler system. The nozzle is also easy to manufacture and has a maximum slot width to prevent clogging at low flow rates. The design includes a lower valve member with a concentric support shaft that provides selective flow restriction. Overall, this new nozzle helps improve the efficiency and performance of the sprinkler system.

Problems solved by technology

Generally, conventional rotary stream sprinklers do not allow for arc of coverage adjustment of more that 120 degrees, or perhaps 180 degrees, in a single nozzle assembly.

When a stream of water strikes the deflector downstream of the nozzle, it tends to spread, thus requiring interaction between the end of the rib used to form the channels of the distributor and the deflector such as that described in U.S. Pat. No. 6,651,905 and reducing uniformity of flow around larger arcuate openings.

This results in distortions in the watering pattern

Typically, more nozzle stream turbulence causes more turbulence velocity and results in smaller drop size and the break-up of larger range streams.

This limits performance of the rotary stream sprinkler uniformity in distribution, i.e. pattern performance.

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