Hybrid flow nozzle and control system

Patent metadata

Field	Value
Publication number	US-10189031-B2
Application number	US-201414506057-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Jun 20, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

Embodiments include individual physical spray nozzles that have passageways inside to combine fluids that flow out of the spray nozzles. The nozzles have at least two valves that are opened and closed in an interleaved manner. The nozzles have multiple outlets. Such nozzles are mounted on a variety of implements including agricultural or industrial spray booms.

First claim

What is claimed is:

1. A spray apparatus comprising:
a nozzle having a nozzle tube connected to a turret, the nozzle tube having a fluid inlet, the fluid inlet coupled to a first passageway, a second passageway, and a third passageway;
a first valve coaxially aligned with a second and third valve along a valve axis arranged perpendicular to a longitudinal axis of the turret, wherein the first passageway is opened by the first valve, the second passageway is opened by the second valve, and the third passageway is opened by the third valve; and
a controller operatively coupled to each of the first valve and the second valve such that in response to receipt of a control signal the first valve and second valve respectively operate to open the first passageway and the second passageway to release an amount of fluid to a corresponding first input and second input of the turret, wherein the first input and second input of the turret respectively couple to a first duct and a second duct arranged inside the turret, and other ends of the first duct and second duct mate to a combined nozzle output and a third duct is operatively coupled to the an individual output via the third passageway and the controller; and wherein the controller is configured to interleave an output signal of the first valve with an output signal of the second valve to generate an aggregate output signal having a frequency that is greater than each of the respective output signals of the first and second valves so as to increase a flow rate of the fluid released from each of the first and second passageways into the combined nozzle output.

2. The spray apparatus of claim 1 , wherein the setup includes a pulse width modulation to open and close the first valve and second valve.

3. The spray apparatus of claim 1 , wherein the output signal of the first valve is interleaved in inverse relation with the output signal of the second valve.

4. The spray apparatus of claim 1 , wherein the controller is configured to interleave the output signal of the first valve with the output signal of the second valve to generate the aggregate output signal having a frequency that is greater than each of the respective output signals of the first, second, and third valves so as to increase a flow rate of the fluid released from each of the first and second passageways into the combined nozzle output, and from the third passageway into at least one of the separate individual outputs.

5. The spray apparatus of claim 1 , wherein a longest dimension of the spray apparatus is 130-160 mm.

6. The spray apparatus of claim 1 , wherein the turret is rotatably coupled to the nozzle tube.

7. The spray apparatus of claim 6 , wherein the turret is tubular having a first output and a second output, both protruding out a side surface of the turret; and the turret having a third output protruding out of an end of the turret.

8. The spray apparatus of claim 1 , wherein the frequency of the aggregate output signal is at least three times greater than the frequency of a non-interleaved output signal.

9. The spray apparatus of claim 1 , wherein the first valve and the second valve operate out of phase.

10. The spray apparatus of claim 1 , wherein a setup includes a sinusoidal or ramped signal to open and close the first and second valve.

Assignees

• Deere & Co

Inventors

• Funseth Travis G
• Bullock Stacy L
• Humpal Richard A

Classifications

• A01B79/005

  Precision agriculture · CPC title

• B05B12/06

  for effecting pulsating flow {(nozzles, spray heads or other outlets with means for generating a discharge of pulsating nature B05B1/08)} · CPC title

• B05B1/169

  having three or more selectively effective outlets · CPC title

• B05B1/3053

  the actuating means being a solenoid · CPC title

• A01G25/16

  Control of watering · CPC title