IP Library › Granted Patent US 12,410,872
Granted Patent B2
US 12,410,872 · App. 18/052,758 · Granted Sep 9, 2025

Valve priming and depriming

Inventors: Justin Krosschell (Sioux Falls, SD); Travis Allen Burgers (Sioux Falls, SD); Drew John Waltner (Freeman, SD)
Assignee: Raven Industries, Inc.
F16K37/0041A01C23/007A01C23/047A01G25/09A01G25/16A01M7/0042A01M7/0089B05B1/1609F16K31/0655
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Quick Facts
Patent No.
US 12,410,872
App. No.
18/052,758
Granted
Sep 9, 2025
Kind
B2
Abstract

A system for applying an agricultural product includes at least one control valve. For instance, the control valve has a moveable valve operator. One or more sensors monitor one or more control valve characteristics. A valve controller is configured to determine the control valve is in one or more of a primed state or an unprimed state based on a comparison of the one or more control valve characteristics to a primed valve characteristic threshold.

Claims (92)

1. A system for applying an agricultural product, the system comprising:

a control valve including:

a moveable valve operator configured to translate between a closed position and an open position;

one or more sensors configured to monitor one or more control valve characteristics; and

a valve controller in communication with the one or more sensors, wherein the valve controller includes:

an actuator configured to repeatedly open and close the valve operator with agricultural product delivered to the control valve;

a comparator configured to compare the monitored one or more control valve characteristics to a primed valve characteristic threshold; and

wherein the valve controller is configured to determine the control valve is in one or more of a primed state or an unprimed state based on the comparison of the one or more control valve characteristics to the primed valve characteristic threshold.

2. The system of claim 1 , wherein the one or more characteristics of the control valve includes at least one operator transition time corresponding to a time span for the valve operator to translate between the closed position and the open position.

3. The system of claim 2 , wherein the operator transition time includes the time span for the valve operator to transition from the closed position to the open position.

4. The system of claim 2 , wherein the at least one operator transition time includes:

a first operator transition time corresponding to the unprimed state; and

a second operator transition time corresponding to the primed state.

5. The system of claim 4 , wherein the second operator transition time is greater than the first operator transition time.

6. The system of claim 4 , wherein the primed valve characteristic threshold includes the first operator transition time.

7. The system of claim 2 , wherein:

the primed valve characteristic threshold includes a transition time threshold; and

the comparator is configured to compare the at least one operator transition time to the transition time threshold.

8. The system of claim 7 , wherein the valve controller determines the control valve is in the primed state with the operator transition time exceeding the transition time threshold.

9. The system of claim 1 , wherein a valve operator cycle includes movement of the valve operator between the closed and open positions, and wherein:

the actuator is configured to open the valve operator in a first valve operator cycle;

the actuator is configured to open the valve operator in a second valve operator cycle;

the comparator is configured to compare the control valve characteristics of the first and second valve operator cycles;

the valve characteristic threshold includes the control valve characteristics of the first valve operator cycle; and

wherein the valve controller is configured to determine the control valve is in one or more of the primed state or the unprimed state based on the comparison of the control valve characteristics of the second valve operator cycle to the control valve characteristics of the first valve operator cycle and a difference therebetween.

10. The system of claim 9 , wherein the control valve characteristics of the control valve include one or more electrical characteristics of the control valve.

11. The system of claim 10 , wherein:

the control valve includes a coil configured to generate a magnetic flux,

the valve operator is configured to translate with respect to the coil based on the magnetic flux; and

the one or more sensors are configured to measure one or more of current through the coil or voltage across the coil as the control valve characteristics.

12. The system of claim 11 , wherein the valve controller is configured to determine the control valve is in one or more of the primed state or the unprimed state based on a comparison of the current through the coil in the second valve operator cycle to the current through the coil in the first valve operator cycle and a different therebetween.

13. The system of claim 12 , wherein the valve controller determines the control valve is in the primed state if the current through the coil in the second valve operator cycle is greater than the current through the coil in the first valve operator cycle.

14. The system of claim 11 , wherein:

the one or more characteristics of the control valve includes at least one operator transition time corresponding to a time span for the valve operator to translate between the closed position and the open position; and

the controller is configured to determine the operator transition time based on one or more of the current through the coil or the voltage across the coil.

15. The system of claim 14 , wherein the valve controller determines the control valve is in the primed state if the transition time for the valve operator in the second valve operator cycle is greater than the operator transition time in the first valve operator cycle.

16. The system of claim 10 , wherein:

the valve controller is configured to determine at least one operator transition time based on the electrical characteristics of the control valve; and

the at least one operator transition time corresponds to a time span for the valve operator to translate between the closed position and the open position.

17. The system of claim 16 , wherein the valve operator transition time in the second valve operator cycle is greater than the valve operator transition time in the first valve operator cycle.

18. The system of claim 1 , wherein the actuator is configured to maintain the valve operator in the closed position if the valve controller determines the control valve is in the primed state.

19. The system of claim 1 , wherein:

the control valve includes a fluid chamber configured to receive a fluidic mixture of one or more of a gas or a liquid including the agricultural product;

in the unprimed state, a volume of the gas in the fluid chamber is greater than a volume of the liquid in the fluid chamber; and

in the primed state, the volume of liquid in the fluid chamber is greater than the volume of gas in the fluid chamber.

20. The system of claim 1 , wherein:

the control valve includes a fluid chamber configured to receive a fluidic mixture of one or more of a gas or a liquid including the agricultural product;

in the unprimed state, the fluidic mixture in the fluid chamber has a first fluidic composition;

in the primed state, the fluidic mixture in the fluid chamber has a second fluidic composition; and

the second fluidic composition is different than the first fluidic composition.

21. The system of claim 1 , further comprising a flushing fluid source in communication with the control valve, wherein:

the flushing fluid source includes a flushing fluid, the flushing fluid is different than the agricultural product; and

the valve controller is configured to supply the flushing fluid to the control valve while repeatedly opening and closing the valve operator to flush the agricultural product from the control valve.

22. A method of priming a control valve, comprising:

delivering an agricultural product to the control valve, the control valve in an unprimed state; and

detecting whether the control valve is in a primed state, detecting including:

repeatedly opening and closing of the control valve while delivering flow of the agricultural product to the control valve, wherein repeatedly opening and closing of the control valve includes moving a valve operator between closed and open positions;

monitoring one or more control valve characteristics while repeatedly opening and closing the control valve;

comparing the monitored control valve characteristics of the valve operator with a primed valve characteristic threshold; and

determining that the control valve is in one or more of the unprimed state or the primed state based on the comparison of the monitored control valve characteristics to the primed valve characteristic threshold.

23. The method of claim 22 , wherein the one or more characteristics of the control valve includes at least one operator transition time corresponding to a time span for the valve operator to translate between the closed position and the open position.

24. The method of claim 23 , wherein the operator transition time includes the time span for the valve operator to transition from the closed position to the open position.

25. The method of claim 22 , wherein a valve operator cycle includes movement of the valve operator between the closed and open positions, the method further comprising:

opening the valve operator in a first valve operator cycle, wherein the valve characteristic threshold includes the control valve characteristics of the first valve operator cycle;

opening the valve operator in a second valve operator cycle;

comparing the control valve characteristics of the first and second valve operator cycles; and

determining the control valve is in one or more of the primed state or the unprimed state based on the comparison of the control valve characteristics of the second valve operator cycle to the control valve characteristics of the first valve operator cycle and a difference therebetween.

26. The method of claim 22 , further comprising maintaining the valve operator in the closed position if the valve controller determines the control valve is in the primed state.

27. A system for applying an agricultural product, the system comprising:

a plurality of control valves including a first control valve and a second control valve, each of the plurality of control valves including:

a moveable valve operator configured to translate between a closed position and an open position;

one or more sensors configured to monitor one or more control valve characteristics of individual ones of the plurality of control valves; and

a valve controller in communication with the one or more sensors, wherein the valve controller includes:

an actuator configured to repeatedly open and close the movable valve operator for the plurality of control valves, wherein agricultural product is delivered to the control valve with the actuator opening and closing the moveable valve operator;

a comparator configured to compare of the monitored one or more control valve characteristics to a primed valve characteristic threshold; and

wherein the valve controller is configured to determine each of the control valves is in one or more of a primed state or an unprimed state based on the comparison of the one or more control valve characteristics to the primed valve characteristic threshold.

28. The system of claim 27 , wherein the valve controller is configured to cascade priming of the plurality of control valves as the valve controller determines control valves of the plurality of control valves are in the primed state.

29. The system of claim 28 , wherein:

the plurality of control valves are located along a boom of an agricultural sprayer, and the boom extends between a proximal boom end and a distal boom end; and

cascading priming of the control valves includes priming each of the control valves in sequence from the proximal boom end to the distal boom end.

30. The system of claim 29 , wherein:

the first control valve is adjacent to the second valve along the boom;

the first control valve is proximal with respect to the second control valve; and

priming each of the control valves in sequence includes:

priming the first control valve;

priming the second control valve with the first control valve in the primed state.

31. The system of claim 27 , wherein:

the plurality of control valves includes a first set of control valves and a second set of control valves;

the first set of control valves includes the first control valve;

the second set of control valves includes the second control valve;

the first set of control valves are located along a first boom section of an agricultural sprayer, and the first boom section extends between a first proximal boom end and a first distal boom end; and

the second set of control valves are located along a second boom section of the agricultural sprayer, and the second boom section extends between a second proximal boom end and a second distal boom end.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 20, 2023
From: KROSSCHELL, JUSTIN; BURGERS, TRAVIS ALLEN; WALTNER, DREW JOHN
To: RAVEN INDUSTRIES, INC.
Reel/Frame 062434/0148 →
Continuity (2)
Provisional Application 63276144 · Nov 5, 2021
Related Publication 20230141867A1 · May 11, 2023
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