Patent Application
20140193213
The invention relates generally to ground working equipment, such as agricultural equipment, and more specifically, to an inductor box for a pneumatic distribution system of an agricultural implement.
Generally, planting implements (e.g., planters) are towed behind a tractor or other work vehicle via a mounting bracket secured to a rigid frame of the implement. These planting implements typically include multiple row units distributed across the width of the implement. Each row unit is configured to deposit seeds at a desired depth beneath the soil surface, thereby establishing rows of planted seeds. For example, each row unit may include a ground engaging tool or opener (e.g., an opener disc) that forms a seeding path for seed deposition into the soil. In certain configurations, a gauge wheel is positioned a vertical distance above the opener to establish a desired trench depth for seed deposition into the soil. As the implement travels across a field, the opener excavates a trench into the soil, and seeds are deposited into the trench. In certain row units, the opener is followed by a packer wheel that packs the soil on top of the deposited seeds.
Certain planting implements include a remote seed tank, and a pneumatic distribution system configured to convey seeds from the tank to each row unit. For example, the pneumatic distribution system may include an inductor box positioned beneath the seed tank. The inductor box is configured to receive seeds from the tank, to fluidize the seeds into an air/seed mixture, and to distribute the air/seed mixture to the row units via a network of pneumatic hoses/conduits. Each row unit, in turn, receives the seeds from the pneumatic hoses/conduits, and directs the seeds to a metering system. The metering system is configured to provide a flow of seeds to a seed tube for deposition into the soil. By operating the metering system at a particular speed, a desired seed spacing may be established as the implement traverses a field.
In one embodiment, a particulate material delivery system for an agricultural implement including, an inductor box configured to receive particulate material from a tank, the inductor box including, an inductor segment comprising an air bypass channel extending through a particulate material supply chamber, wherein the particulate material supply chamber is configured to receive the particulate material for distribution to at least one row unit, and the air bypass channel is configured to guide airflow through the particulate material supply chamber without interacting with a flow of the particulate material through the particulate material supply chamber.
In another embodiment, a particulate material delivery system for an agricultural implement including, an inductor box including, a particulate material supply chamber configured to receive particulate material from a particulate material source, an air supply chamber configured to receive airflow from an airflow supply for use in conveying particulate material through the inductor box, and an air bypass channel configured to guide airflow from the air supply chamber through the particulate material supply chamber without interacting with a flow of the particulate material through the particulate material supply chamber.
In a further embodiment, a particulate material delivery system for an agricultural implement including, an inductor segment including, a particulate material supply chamber configured to receive particulate material from a particulate material tank and a first airflow from an air source, a particulate material fluidization chamber configured to mix the particulate material and the first airflow from the particulate material supply chamber, a particulate material delivery chamber configured to receive the particulate material from the particulate material fluidization chamber and to distribute the particulate material to at least one row unit, and an air bypass channel extending through the particulate material supply chamber and configured to direct a second airflow through the particulate material supply chamber and into the particulate material delivery chamber without interacting with the particulate material in the particulate material supply chamber.
These and other features, aspects, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:
One or more specific embodiments of the present invention will be described below. In an effort to provide a concise description of these embodiments, all features of an actual implementation may not be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
When introducing elements of various embodiments of the present invention, the articles “a,” “an,” “the,” and “said” are intended to mean that there are one or more of the elements. The terms “comprising,” “including,” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
In certain embodiments, each row unit 20 includes a residue manager, an opening assembly, a particulate material tube, closing discs, and a press wheel. The residue manager includes a rotating wheel having multiple tillage points or fingers that break up crop residue, thereby preparing the soil for particulate material deposition. The opening assembly includes a gauge wheel and an opener disc. The gauge wheel may be positioned a vertical distance above the opener disc to establish a desired trench depth for particulate material deposition into the soil. As the row unit travels across a field, the opener disc excavates a trench into the soil for particulate material deposition. The particulate material tube, which may be positioned behind the opening assembly, directs a particulate material from a metering system into the excavated trench. The closing discs then direct the excavated soil into the trench to cover the planted particulate material. Finally, the press wheel packs the soil on top of the particulate material with a desired pressure.
While the illustrated implement 10 includes 24 row units 20, it should be appreciated that alternative implements may include more or fewer row units 20. For example, certain implements 10 may include 6, 8, 12, 16, 24, 32, or 36 row units, or more. In addition, the spacing between row units may be particularly selected based on the type of crop being planting. For example, the row units may be spaced 30 inches from one another for planting corn, and 15 inches from one another for planting soybeans.
As mentioned above, the pneumatic distribution system 24 includes an inductor box configured to receive particulate material (e.g., seeds) from a respective tank. Depending on the desired application, the pneumatic distribution system may distribute a wide variety of seeds (e.g., light seeds, heavy seeds, large seeds, small seeds, etc). The inductor box fluidizes the particulate material from a tank 22 into an air-particulate material mixture for distribution to the row units 20 through a network of pneumatic hoses/conduits. The inductor box fluidizes and conveys particulate material through the pneumatic distribution system 24 using multiple air pathways. As will be discussed in more detail below, one of the air pathways extends through an air bypass channel and conveys airflow directly from an air supply chamber to a particulate material delivery chamber. By directing a portion of airflow directly from the air supply chamber to the particulate material delivery chamber, the air bypass channel improves airflow efficiency and the movement of particulate material out of the inductor box. As a result, an air supply (e.g., fan, blower, etc.) consumes less power and/or enhances particulate material delivery to the row units 20. Also, by directing airflow directly from the air supply chamber to the particulate material delivery chamber, the particulate/air mixture becomes less dense with particulate material, which tends to convey the particulate material in a steady stream with less surging that typically occurs with densely packed particulate/air mixtures.
As particulate material flows through the inductor segment 52, the particulate material passes through a series of chambers before exiting through the particulate material delivery port 62. The chambers in the inductor segment 52 include a particulate material supply chamber 74, a fluidization chamber 76, and a particulate material delivery chamber 78. The angled surfaces 70 and 72 channel the particulate material from the tank 22 into the particulate material supply chamber 74 through a particulate material supply chamber inlet 80. The particulate material supply chamber 74 guides the particulate material from the particulate material supply chamber inlet 80 to the particulate material supply chamber outlet 86 via a first wall 82 and a second wall 84. As illustrated, the walls 82 and 84 may include respective vertical portions 88 and 90, as well as respective angled portions 92 and 94. As the particulate material flows through the particulate material supply chamber 74, the angled portions 92 and 94 of the walls 82 and 84 direct the particulate material toward the particulate material supply chamber outlet 86 at a base 96 of the inductor box 40.
Airflow from the air supply then conveys the particulate material through the particulate material supply chamber outlet 86 and into the fluidization chamber 76. The fluidization chamber 76 includes a first wall 98 and shares the second wall 84 of the particulate material supply chamber 74. If the air flow through the fluidization chamber 76 is sufficient, the particulate material will fluidize and a vortex flow is created due to the geometry of the fluidization chamber 76. The vortex 100 separates and mixes the particulate material with the airflow before the particulate material flows to the particulate material delivery chamber 78. If the air flow through the fluidization chamber 76 is sufficient the particulate material is conveyed out of the fluidization chamber 76 and into the particulate material delivery chamber 78. In the particulate material delivery chamber 78, airflow from the fluidization chamber combines with airflow from a bypass channel 102 to convey the particulate material out of the particulate material delivery chamber 78, through the particulate material delivery port 62, and to the row units 20.
As explained above, the inductor box 40 includes the air supply port 50 for receiving airflow from an air supply that pressurizes the tank 22 and conveys particulate material through the inductor segment 52. The airflow from the air supply passes through the air supply port 50 and enters an air supply chamber 104. The air supply chamber 104 extends through the inductor box 40 in a generally perpendicular direction to the flow path through the inductor segments 52, thereby supplying each inductor segment 52 with the airflow.
The air supply chamber 104 divides the airflow from the air supply into four airflow paths numbered 106, 108, 110, and 112. The first airflow path 106 passes through the first screen 64 and enters the particulate material supply chamber 74. As illustrated, the first screen 64 enables airflow to exit the air supply chamber 104, while simultaneously blocking particulate material from entering the air supply chamber 104. As the airflow through the first airflow path 106 enters the particulate material supply chamber 74, the airflow engages the particulate material and urges the particulate material in direction 68. For example, when using light particulate material (e.g., sunflower seeds, sweet corn seeds, etc.), the airflow through the airflow path 106 reduces blockage of the particulate material supply chamber 74 by providing additional force (in addition to gravity) to move the particulate material through the particulate material supply chamber 74. While the airflow through the first airflow path 106 facilitates urging the particulate material in the direction 68 through the particulate material supply chamber 74, the airflow through the second airflow path 108 conveys the particulate material out of the particulate material supply chamber 74 and into the fluidization chamber 76. The airflow through the second airflow path 108 flows through a second screen 114. The second screen 114 is coupled to the first wall 82 and to the base 96 of the inductor box 40. The second screen 114, like the first screen 64, blocks the particulate material from entering the air supply chamber 104.
A third airflow path 110 flows through the first screen 64 and into the tank 22. The airflow in the third airflow path 110 pressurizes and expands the tank 22. However, in some embodiments, the lid 42 may not create a fluid tight seal with the tank 22. Accordingly, airflow in the third airflow path 110 may provide continuous airflow into the tank 22 to replace pressurized air lost through leaks in the lid 42. As a result, airflow from the first airflow path 106 is able to flow through the particulate material supply chamber 74, and the airflow in the second airflow path 108 is able to convey the particulate material into the fluidization chamber 76. In other words, the airflow in the third airflow path 110 pressurizes the tank 22, thus equalizing pressure within the system.
The airflow in the fourth airflow path 112 flows from the air supply chamber 104 through the air bypass channel 102 and into the particulate material delivery chamber 78. The air bypass channel 102 is disposed within the particulate material supply chamber 74 and extends between the first particulate material supply chamber wall 82 and the second particulate material supply chamber wall 84. The walls 82 and 84 include respective apertures 116 and 118 that enable the airflow of the fourth airflow path 112 to pass directly through the air bypass channel 102 from the air supply chamber 104 and to the particulate material delivery chamber 78. By directing airflow directly from the air supply chamber 104 to the particulate material delivery chamber 78, the air bypass channel 102 improves airflow efficiency and flow uniformity (e.g., reduces surging of particulate material flow) of particulate material out of the inductor box 40. As a result, the air supply consumes less power and/or enhances particulate material delivery to the row units 20.
While only certain features of the invention have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
