公开(公告)号：WO2021066962A1

公开(公告)日：2021-04-08

申请号：PCT/US2020/047696

申请日：2020-08-24

Applicant: RAVEN INDUSTRIES, INC. ,  KROSSCHELL, Justin ,  BURGERS, Travis ,  DEINES, Jacob

Inventor： KROSSCHELL, Justin ,  BURGERS, Travis ,  DEINES, Jacob

IPC: B05B12/02 ,  A01M7/00

Abstract: In an example, a system for applying an agricultural product includes a valve and a solenoid. For instance, the valve includes a coil that generates a magnetic flux. The system includes a valve controller. The valve controller is configured to measure one or more electrical characteristics of at least one of the coil or a dissipation element. In some examples, the valve controller determines an actual duty cycle of a valve operator of the valve using the measured electrical characteristics. The valve controller determines a magnetic flux correction, for instance based on a difference between the actual duty cycle and a specified duty cycle. The valve controller operates the valve operator according to the specified magnetic flux and the magnetic flux correction to guide the actual duty cycle toward the specified duty cycle.

公开(公告)号：WO2023081371A1

公开(公告)日：2023-05-11

申请号：PCT/US2022/048981

申请日：2022-11-04

Applicant: RAVEN INDUSTRIES, INC.

Inventor： KROSSCHELL, Justin ,  BURGERS, Travis Allen ,  WALTNER, Drew John

IPC: A01M7/00 ,  B05B12/04 ,  B05B12/08 ,  B05B12/02

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.

公开(公告)号：WO2021263024A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038955

申请日：2021-06-24

Applicant: RAVEN INDUSTRIES, INC.

Inventor： BURGERS, Travis ,  STEENSMA, Seth ,  KROSSCHELL, Justin ,  KOCER, Jared, Ernest

IPC: B05B12/08 ,  B05B1/30 ,  A01M7/0042 ,  A01M7/0089 ,  B05B1/32 ,  B05B12/087 ,  B05B13/005

Abstract: A sprayer nozzle assembly includes a control valve configured to control a flow rate of agricultural product according to a duty cycle having valve open and valve closed positions. The assembly includes a sprayer tip having a tip orifice for spraying the agricultural product. A throttled interface duct interconnects the control valve and the sprayer tip. The throttled interface duct includes an interface duct profile. The interface duct profile is configured to decrease a flow characteristic of the agricultural product while the control valve is in the valve closed position.