WO2019091835A1

WO2019091835A1 - Agricultural spraying device

Info

Publication number: WO2019091835A1
Application number: PCT/EP2018/079765
Authority: WO
Inventors: Olaf Ohlhafer; Hans-Arndt Freudigmann; Jochen Glasbrenner
Original assignee: Robert Bosch Gmbh
Priority date: 2017-11-10
Filing date: 2018-10-30
Publication date: 2019-05-16
Also published as: DE102017220036A1

Abstract

The invention relates to an agricultural spraying device (10) that comprises at least one spray nozzle unit for discharging a liquid onto a treatment region (42) of an agricultural area (32), the spray nozzle unit being designed to discharge said liquid via at least two partially overlapping profiled spraying sections (34, 36, 38) such that each of them individually distributes the liquid spatially onto a respective sub-region (44, 46, 48) of the agricultural area (34), wherein the sub-regions (44, 46, 48) partially overlap and together form the treatment region (42), thus providing for a substantially spatially homogeneous total distribution of the liquid over the treatment region (42) of the agricultural area (32).

Description

Description title

Agricultural sprayer prior art

The invention relates to an agricultural spray device and a method for dispensing a liquid by means of the agricultural spray device according to the preamble of the independent claims. The subject of the present invention is also a control device and a computer program.

The use of so-called flat jet nozzles for the two-dimensional application of spray liquor by means of a field sprayer on an agricultural field is known. A single flat jet nozzle has a spatially highly inhomogeneous quantity distribution. Only by spatial superimposition of the individual inhomogeneous spray profiles of the flat spray nozzles of the field spray takes place with the exception of the outer edge regions of the spray boom of the sprayer a substantially spatially homogeneous distribution of the spray mixture.

Also known is the use of individual so-called even Fiat fan nozzles or hollow cone nozzles whose spray profile allows a spatially homogeneous distribution of the spray mixture without spatial superposition with other spray profiles. These nozzles are preferably used for single nozzle or single plant applications.

Consequently, the spray nozzles known from the prior art and their arrangements of field sprayers are optimized for areal applications or single nozzle applications, depending on the application. Here, the desired spatial quantity distributions are achieved at a predetermined, defined distance of the nozzle to the ground. This distance is due to uneven floors, different plant heights or by a swinging sprayer boom below or exceeded, so there is sometimes a spatially highly inhomogeneous distribution of the spray on the agricultural area.

Particularly pronounced spatial inhomogeneities in the distribution of the spray mixture on the agricultural surface result when either only individual nozzles are switched on or off in a configuration intended for planar use by a multiplicity of flat-jet nozzles or when with even-use nozzles provided for a single-nozzle application. Fiat fan nozzle or hollow cone nozzle which would like to deploy the spray surface.

DE 10 2014 103 787 discloses a method for deploying

Plant protection product on an agricultural field with a spraying device. This is to comply with distance requirements to a body of water

Switching to a separate edge nozzle provided. To the inside of the field, the spray pattern is still regularly supplemented by the edge nozzle. In contrast to the edge of the field, the spray angle is significantly reduced.

DISCLOSURE OF THE INVENTION Against this background, with the approach presented here, an agricultural spray device for dispensing a liquid, furthermore a method for dispensing the liquid by means of the agricultural process

Spraying device, further presented a control device and a computer program according to the main claims.

The approach presented here provides an agricultural spraying device with at least one spray nozzle unit for dispensing a liquid onto a region of an agricultural area to be treated, wherein the

Spray nozzle unit is formed, the liquid by means of at least two partially overlapping spray profiles for each a spatial single distribution of

Discharge liquid on each part of the agricultural area, wherein the subregions partially overlap spatially and together form the area to be treated, so that a substantially spatially homogeneous overall distribution of the liquid results on the area of the agricultural area to be treated. Furthermore, the approach presented here provides a method for dispensing a liquid onto a region of an agricultural area to be treated by means of an agricultural spraying device with at least one

Spray nozzle unit, wherein the liquid by means of two partially

superimposed spray profiles each having a spatial individual distribution of the liquid is distributed to each subarea of the agricultural area such that the subregions partially overlap spatially and together form the area to be treated and a substantially spatially homogeneous overall distribution of the liquid on the area to be treated agricultural Area results.

Furthermore, the approach presented here creates a computer program, a machine-readable storage medium and a control device, which is set up to at least one spray nozzle unit of an agricultural spray device for dispensing a liquid onto a treatment to be treated

To control area of an agricultural area in order to deliver the liquid by means of at least two partially overlapping spray profiles to a spatial individual distribution of the liquid on each subarea of the agricultural area such that the subareas overlap partially spatially and together form the area to be treated and an im

Substantially spatially homogeneous overall distribution of the liquid on the area of the agricultural area to be treated results.

In particular, the spray device may be part of an agricultural

Field sprayer or a crop protection device or be designed as an agricultural sprayer or a crop protection device. The spraying device can be arranged and / or arranged on or on a mobile unit. The mobile unit may be designed as a land vehicle and / or aircraft and / or trailers. The mobile unit may in particular be an agricultural work machine,

For example, a tractor, a tractor, a tractor or a

(self-propelled or autonomous) sprayer, be. The

Spray device can also be attached to a hydraulic device

agricultural machine to be grown. It is also conceivable that the spraying device is constructed on a loading surface of the agricultural machine. Alternatively, the sprayer on the agricultural Working machine attached. The agricultural spray device is designed to treat an agricultural surface with the liquid, in particular the spray mixture.

An agricultural area can be understood as an agricultural area, a cultivated area for plants or even a plot of such an area or cultivated area. The

Agricultural area can thus be a field, arable land, a grassland or a pasture.

The plants can, for example, crops whose fruit

used agriculturally (for example as food, animal feed or energy crop), as well as weeds or weeds and grass weeds. The plants can be part of the agricultural area.

In the context of the present invention, a region of an agricultural area to be treated can be understood to mean a region of an agricultural area which is intended for treatment with a liquid. Treating the agricultural area with the liquid may in this case comprise dispensing or applying the liquid to the agricultural area and / or to a plant on the agricultural area. It is also conceivable that the treatment of the agricultural area with the liquid comprises a mechanical processing or damage, for example, of weeds on the agricultural area.

In the context of the present invention, a liquid can be understood to mean an agriculturally usable liquid such as, for example, water. The liquid is preferably a spray mixture. In particular, in the context of the present invention under a liquid also a

Suspension or an emulsion or a mixture of a suspension and an emulsion.

The spray mixture has at least one active agent. The active agent may be a spraying agent, ie a preparation or pesticide, in particular have a pesticide concentrate. The active agent may accordingly comprise, for example, a herbicide, fungicide or an insecticide (pesticide). However, the active agent may also comprise a fertilizer, in particular a fertilizer concentrate. The agent can therefore a

Have liquid fertilizer and / or a growth regulator. The active agent can be formed as a liquid or as a solid, for example in the form of granules, or as a pre-dissolved solid, for example in the form of pre-dissolved granules.

The spray mixture preferably further comprises a liquid, in particular a carrier liquid for diluting the active agent. Under one

In the context of the present invention, carrier liquid can be understood as meaning a liquid which is designed to be mixed with the active agent in order to enable or to improve the dispensing or dispensing of the active agent, for example the crop protection agent or the fertilizer. It is also conceivable that a present as a solid or granules active agent is suspended in the carrier liquid. It is also conceivable that a non-soluble in the carrier liquid active agent is emulsified in the carrier liquid. The carrier liquid is preferably water.

The spray mixture is preferably formed as a diluted pesticide or diluted fertilizer.

The spray device preferably has a spray tank for receiving the spray mixture and at least one spray nozzle unit for discharging the

Spray mixture on. The spray mixture can be guided or directed by the spray-bath tank by means of a spray-broth line or several spray-broth lines to the spray-nozzle unit. Under a line or spray line can be used in the present

Invention, a section of the corresponding line or the spray line are understood. The line can be called fluidic

Connecting line, for example in the form of a pipe, tube, channel or a tube may be formed.

The spray mixture can be mixed into the spray liquid tank

Sprayer be filled. However, the spray mixture can only Spray device are mixed. For mixing of the spray mixture, the spray device (in the flow direction of the spray mixture) upstream of the spray chamber have a mixing unit, in which the liquid from a liquid tank of the spray device and the active agent from a

Active agent tank of the spray device are guided or conducted.

In this case, a liquid delivery unit may be provided, which is designed to selectively convey or convey the liquid from the liquid tank via a liquid line to the mixing unit. Furthermore, an active agent delivery unit can be provided, which is designed to selectively convey or guide the active agent from the active agent tank via an active agent line to the mixing unit. The conveyor units can have one or more metering units or metering components. The metering units or metering components may comprise one or more pumps or metering pumps and valves. At least one of the

Conveyor units can be designed to increase the injection pressure at the

Spray nozzle unit, that is, to generate the pressure with which the spray mixture is discharged. Under a mixing unit can in the context of the present invention, a

Unit be understood, which is designed to at least the liquid and the active agent together to the spray mixture, preferably as homogeneous as possible to mix or mix. The mixing unit can have a mixing and / or stirring element in order to actively mix the liquid and the active agent. The mixing unit can at least each have an inlet for the liquid and the active agent. That is, in other words, that the liquid and the active agent can be fed separately, that is, by means of separate lines directly into the mixing unit. Alternatively, a common inlet on the mixing unit may be in the form of a T-piece

be provided, wherein the active agent is first supplied to the liquid or fed into this and then performed together with the liquid in the mixing unit. The mixing unit may have at least one outlet for the mixed or mixed spray mixture, for example in a lower area. It is also conceivable that the mixing unit as a static mixing unit or static mixer is trained. However, the mixing unit can also be designed only as a T-piece, so that a passive mixing takes place in it.

The spray tank can be designed as a buffer tank. The buffer tank may be disposed in the spray liquor line downstream of the mixing unit. In other words, in the flow direction of the spray mixture, the buffer tank travels from the mixing unit to the spray nozzle unit

or is arranged after the mixing unit. The buffer tank can thus be arranged spatially in the spray liquor line between the mixing unit and the spray nozzle unit, so that the spray mixture from the

Mixing unit in the buffer tank feasible or fillable and from the buffer tank to the spray nozzle unit executable or conveyed or is conductive. Furthermore, the spray device may have a spray delivery unit which is located in the spray line downstream of the

Spritzbrühentanks or buffer tanks arranged and / or integrated in this. The spray liquid feed unit can then be designed, the spray mixture from the spray liquid tank or buffer tank under pressure or under a defined pressure to the spray nozzles

or to inject spray nozzle units. The spray delivery unit may in particular be designed to generate a constant pressure, that is to say be configured as a constant pressure system, in order to achieve a constant or uniform injection pressure at the spray nozzles

or to produce spray nozzle units. Since the defined

Spray pressure is generated by the spray liquid feed unit, the

Conveyor units upstream of the buffer tank, that is the

Liquid delivery unit and the active agent delivery unit be very simple, since they only have to take over the task of supplying the liquid or the active agent in the buffer tank.

If the spray delivery unit is integrated in the buffer tank, the buffer tank can be designed as an accumulator, for example with media separation (spray mixture - air). The pressure control in the buffer tank can then be done via a pneumatic pressure control valve, so that possible pressure fluctuations in the system can be reduced. The spray liquor conveying unit is preferred however, disposed downstream of the spray booth, whereby the buffer tank can be designed without pressure. In this case, the buffer tank may be formed without pressure, for example by means of a vent hole. The

Vent hole may have a vent valve. In other words, the buffer tank is fluidly connected to the environment

or is connectable at a defined internal pressure, so that it is formed without pressure. By this measure, the

Liquid delivery unit and the drug delivery unit advantageously no longer against the high system pressure but only against the

Ambient pressure (and the resulting due to flow losses

Back pressure) work, so that the pressure requirements of the corresponding pumps or metering pumps are further reduced.

For example, the liquid delivery unit can be a simple

Have flow pump or feed pump, which has a pure on / off functionality. In conjunction with a volume flow meter can then via the flow signal and the previously set

Mixing ratio of the required metering volume of the active ingredient determined and the Wirkstoffdosierpumpe be controlled. Alternatively, the

Liquid delivery unit have a metering pump with a fixed delivery ratio (without measuring the delivery volume). It is also conceivable that the

Fluid delivery unit a simple valve or proportional valve in

Having connection with a flow meter and a constant pressure source in the liquid line. It is also conceivable that the liquid delivery unit has a constant pressure source and a metering orifice. The

Active substance delivery unit can be a simple alternative to the metering pump

Feed pump in conjunction with a flow meter (control) have. The active substance delivery unit can additionally have at least one metering orifice in this case. In addition, the buffer can be designed very easily and essentially without static requirements, whereby the total cost can be further reduced.

The spray nozzle unit has in each case at least one spray nozzle for discharging the liquid, in particular the spray mixture, and at least one valve for controlling or regulating the discharged quantity of liquid, in particular of spray liquor. It is advantageous if the spray nozzle unit has at least two spray nozzles for producing the at least two spray profiles, in particular further comprises a valve unit. As a result, the spray nozzle unit is designed to deliver at least two spray profiles simultaneously in order to achieve the substantially spatially homogeneous overall distribution on the agricultural surface.

The valve can be arranged or integrated in the spray nozzle. However, the valve can also upstream of the spray nozzle, that is (in

Flow direction of the liquid) may be arranged upstream of the spray nozzle. However, the spray nozzle unit may also have a plurality of spray nozzles, each with an upstream valve. The spray nozzle unit can also have a plurality of spray nozzles with only one upstream of the spray nozzle, so that upon actuation of the valve, the spray mixture is discharged by means of all spray nozzles of the spray nozzle unit. The spray nozzle unit may also have a final mixing unit, which is formed, the spray mixture with the liquid and / or the active agent and / or another

Agent - which are conductive by means of appropriate lines to the Endmischeinheit or feasible - to mix. In this case, it is advantageous to provide a combination of the final mixing unit with the mixing unit described above, which in this case would be designed as a premixing unit, in order to obtain a two-stage mixing system.

The spray nozzle unit is designed to deliver the liquid by means of at least two spray profiles that are partially overlapping. In the context of the present invention, a spray profile can be understood to be a characteristic, in particular a spatial distribution of the discharged liquid. It is conceivable that the spray profile over a spray angle, a spray width at a defined spray height, a volume flow, a size distribution of

Liquid drop of the discharged liquid, a speed of the liquid droplets, an impact force of the discharged liquid is defined on a surface.

It is advantageous if the spray nozzle unit is formed, the liquid at the same time by means of at least two, in particular two different

Deliver sprayed profiles. It is conceivable that the spray nozzle unit is formed, the liquid over at least a certain injection duration or

Spray duration simultaneously using two spray profiles. Several Spray profiles can overlap spatially when the liquid is dispensed at least for a certain injection time simultaneously with the multiple spray profiles. For this purpose, the liquid is dispensed from a plurality of spray openings or spray nozzles of the spray nozzle unit and / or by a plurality of spray nozzle units. In this case, the plurality of spray profiles may differ in particular in a spatial distribution of the liquid, a spray angle, a spray width at a defined spray height, a volume flow, a velocity of the liquid droplets and / or an impact force of the liquid dispensed onto a surface. This is already a single one

Spray nozzle unit formed, a substantially spatially homogeneous

To produce total distribution of the liquid.

Further, it is advantageous if the spray profiles for the substantially spatially homogeneous overall distribution on the agricultural surface can be set and / or adapted to each other by specifying at least one of the following parameters: spray angle of the spray nozzle unit, spray pattern of

Spray nozzle unit, pressure of the liquid at the spray nozzle unit,

Volume flow of the liquid through the spray nozzle unit, spray width at a defined spray height, size distribution of the liquid droplets of the

discharged liquid, velocity of the liquid drops, impact force of the discharged liquid on the agricultural surface. Under the specification of one of the parameters is the specification of a value or a

Value range of the corresponding parameter. By this embodiment, the agricultural spray device is designed to achieve a spatially particularly homogeneous overall distribution of the liquid.

It is particularly advantageous if the spray nozzle unit is designed to match at least two volume flows of the liquid generating the spray profiles in such a way that the area of the agricultural area to be treated is substantially spatially constant

Volume flow of the liquid per area to be treated is treatable. As a result, a predetermined setpoint value for a volume flow of the liquid per area can be achieved or maintained in a particularly simple manner. As a result of the delivery of the liquid by means of a spray profile on the

Agricultural area forms a spatial single distribution of discharged liquid on the agricultural area. The spatial individual distribution of the liquid is indicated by an indication of the

agricultural area or volume

defined volume flow per unit area defined. The individual distribution may be substantially spatially homogeneous or substantially spatially inhomogeneous. That is, in other words, the liquid can in

Substantially uniformly or spatially equally distributed or substantially unevenly distributed or spatially unevenly distributed on the agricultural area.

For the purposes of this description, a substantially spatially homogeneous distribution of the liquid is a distribution of the liquid, which in particular also has a homogeneous distribution of the liquid in a spatial edge region of the distribution. The substantially spatially homogeneous distribution thus drops rapidly and steeply in the spatial border area of the distribution.

Preferably, the liquid in the edge region of the distribution is perpendicular to the agricultural surface.

Several individual distributions at least partially overlapping

Subareas of the agricultural area are spatially superimposed or add up to a total distribution of the liquid. It is advantageous if the spatial individual distributions of the liquid on the respective subregions of the agricultural surface are substantially spatially inhomogeneous. In this case, the individual, essentially spatially inhomogeneous individual distributions overlap to form a substantially spatially homogeneous overall distribution of the liquid. This can vary depending on

Application of different types of spray nozzle units at the

agricultural spray device are arranged. The approach proposed here is based on the finding that a substantially spatially homogeneous overall distribution of the liquid on the agricultural surface can be achieved by a defined spatial superimposition of spray profiles. By means of the claimed agricultural

Spraying device, the liquid in particular in applications in which one or more spray nozzle units are switched on or off, on the areas of the agricultural area to be treated, especially in the overall distribution are applied substantially spatially homogeneous. In this case, the individual distributions of the individual spray profiles need not be homogeneous. Rather, the substantially spatially homogeneous distribution of the liquid is created by the defined spatial superposition of the individual distributions, so that spray nozzle units with spatially inhomogeneous

Spray profiles for both surface applications as well as for

Single plant applications can be used. Thus, it is possible with the agricultural spray device, on the one hand the formation of resistances by inhomogeneous and thus locally insufficient spray mixture and on the other an overload of agricultural

The surface and groundwater are inhomogeneous and therefore too local

to prevent spread spray.

It is also advantageous if the spray nozzle unit is formed, the

Liquid by means of at least one further at least one of the spray profiles partially superimposed spray profile to deliver a further spatial distribution to another portion of the agricultural area, wherein the further portion at least partially spatially superimposed on at least one of the subregions and the area to be treated comprises the further subarea. It is conceivable that a first spray profile with a first in a first and a second edge region spatially inhomogeneous single distribution in the first edge region with a second spray profile with a spatially inhomogeneous second single distribution and in the second edge region with a third spray profile with a spatially inhomogeneous third individual distribution superimposed so that a substantially spatially homogeneous overall distribution of the liquid results. It is also conceivable that the spray nozzle unit is designed to dispense the liquid by means of a plurality of spray profiles each for a spatial single distribution of the liquid on each subarea of the agricultural area, wherein the spray profiles are formed side by side and spatially adjacent spray profiles superimposed, wherein adjacent portions partially spatially superimpose and together form the area to be treated, so that a substantially spatially homogeneous overall distribution of the liquid results on the area of the agricultural area to be treated. By this configuration, the agricultural spray device is formed, regardless of the number of Spray profiles to achieve a spatially homogeneous overall distribution of the liquid on the treated area of the agricultural area.

It is furthermore advantageous if the agricultural spray device has at least one further spray nozzle unit, which is designed, the

To deliver liquid to a further area of the agricultural area to be treated spatially spaced from the area of the agricultural area to be treated such that a substantially spatially homogeneous overall distribution of the liquid results on the further area of the agricultural area to be treated. As a result, the agricultural spray device is designed to simultaneously treat a plurality of spatially spaced areas of the agricultural area to be treated with the liquid. For example, a spray mixture with the

At the same time, spray nozzle units can be selectively dispensed onto isolated, spatially spaced weeds.

Moreover, it is advantageous if a spatial distance between the spray nozzle units is selected such that the areas of the agricultural area to be treated are substantially spatially adjacent to one another. In other words, the areas of the agricultural area to be treated neither overlap nor have a spatial separation. A spatial distance between two spray nozzle units can be understood to mean a distance between the spray nozzles of the spray nozzle units if the spray nozzle units each have only one spray nozzle. If at least one of the spray nozzle units has a plurality of spray nozzles, the smallest distance between two spray nozzles of the two spray nozzle units can be understood as the spatial distance between the spray nozzle units. It is conceivable that the distance between the spray nozzle units is chosen as small as possible. It is also conceivable that the distance between the

Spray nozzle units depends on the spray profiles of the spray nozzle units. In this case, the distance may depend in particular on the spray angle of the spray profile. It is conceivable that the distance between the spray nozzle units is selected such that the respective substantially spatially homogeneous

Partially overlay overall distributions. This is the agricultural Spraying device is formed, the liquid on a treated area of the agricultural area, which is composed of several contiguous individual areas to be treated, by means of several adjacently arranged spray nozzle units simultaneously to a in

Essentially spatially homogeneous overall distribution of the liquid to give.

Thus, a treatment of all weeds on the agricultural area is possible while preventing the formation of resistance.

It is particularly advantageous if the spatial distance between the two spray nozzle units smaller, in particular substantially smaller than the spatial distance between the spray nozzles of the respective spray nozzle unit. For example, the distance may be less than ten inches, especially less than or equal to five inches. By this configuration, therefore, on the one hand, a two-dimensional treatment of the agricultural area with the

Liquid possible. On the other hand, when switching off individual

No risk of resistance formation at the junctions between areas of the agricultural area to be treated and left untreated. Furthermore, it is advantageous if the spray nozzle units

- independently of each other and / or

- Depending on an operating condition of an adjacent

Spray nozzle unit of the spray device and / or

- Depending on a property information and / or

Condition information of the agricultural area are controllable.

It is conceivable that the spray nozzle units can be connected independently of one another and / or switched off. It is also conceivable that the spray nozzle unit is designed to dispense the liquid with a spatially inhomogeneous spray profile, if an adjacent spray nozzle unit also emits liquid with a spatially inhomogeneous spray profile. Here is the

Spray nozzle unit formed, the liquid only by means of at least two partially overlapping spray profiles to the two spatial

Dispense individual distributions of the liquid on the respective sections of the agricultural area, if the adjacent

Spray nozzle unit does not give off any liquid. Furthermore, it is conceivable that the Injection nozzle units in the presence of a in the form of

Property information represented property and / or a state of the agricultural area represented in the form of the state information can be switched on and / or off. It is also conceivable that the

Property information of the agricultural area may be selected from the following group of characteristics of agricultural areas and / or plants on the agricultural area comprising: species, genus, variety, varietal purity, surface texture, sensitivity to external, especially mechanical influences, nature of a soil. Finally, it is conceivable that the status information of the agricultural area can be selected from the following group of states

agricultural land and / or crops on the agricultural

Area comprising: age, growth stage, state of development,

Health condition, illness, nutrient content, nutrient deficiency,

Water content, lack of water, surface moisture, surface temperature. Furthermore, the status information of the agricultural area may be a measure of a number, a position or a size of plants on the

agricultural area or a measure of a distribution of organic material or a wind direction or a value of a wind speed at the agricultural area. By this configuration is a

agricultural spray device with the spray nozzle units particularly efficient use.

Also of advantage is a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and for carrying out, implementing and / or controlling the steps of the method according to one of the embodiments described above is used, especially when the program product or program is executed on a computer or a device.

The inventive method can, for example, in software or hardware or in a hybrid of software and hardware, for example in a

Be implemented control unit. drawings

The invention will now be described by way of example with reference to the accompanying drawings. Show it:

Fig. 1A-C is a schematic representation of an agricultural

Spray system in a side view;

Fig. 2A, B is a schematic representation of spray profiles and the

associated spatial distributions of the liquid; and

3 is a flowchart of a method according to a

Embodiment.

In Fig. 1A-C, respectively, an agricultural spray system is shown, which is provided in its entirety by the reference numeral 10.

The agricultural spraying system 10 comprises a tractor 12 and a spraying device 14 designed as a mounted sprayer 14. The mounted sprayer 12 is arranged on the tractor 12.

The mounted sprayer 14 has a liquid tank 16 for a spray mixture, a spray boom 18 and a control device 20.

The spray boom 18 is divided into seven sections 22. Each of the sections 22 has at least one spray nozzle unit with several associated

Spray nozzles 24, 26, 28, 30 on. The spray nozzles 24, 26, 28, 30 are connected to the liquid tank 16 via hose connections (not shown). Thus, the spray nozzles 24, 26, 28, 30 are formed to spray the spray mixture from the tank 16 onto an agricultural surface 32.

Each of the spray nozzles 24, 26, 28, 30 has a valve associated with the spray nozzle 24, 26, 28, 30. The respective valve is arranged upstream of the associated spray nozzle 24, 26, 28, 30 at the corresponding partial width 22. By means of actuation of a valve, therefore, a delivery of the spray mixture through the respective associated spray nozzle 24, 26, 28, 30 can be controlled. The control device 20 is electronically connected to each of the spray nozzles 24, 26, 28, 30 such that the valves can be actuated automatically via the control device 20 and targeted delivery of the spray mixture by the spray nozzles 24, 26, 28, 30 is possible.

In Fig. 1A 22 two spray nozzle units are arranged at each partial width. Each of the spray nozzle units has a first spray nozzle 24 and a second one

Spray nozzle 26 on. The first spray nozzle 24 is designed to deliver the spray mixture to a first partial area 44 of the agricultural area 32 by means of a first spray profile 34 to form a first spatial single distribution. The second spray nozzle 26 is designed to deliver the spray mixture simultaneously with the first spray nozzle 24 by means of a second spray profile 36 to a second spatial individual distribution onto a second partial region 46 of the agricultural surface 32. In this case, the partial regions 44, 46 are partially spatially superimposed and together form the region 42 to be treated. As a result, each individual spray nozzle unit with the two spray nozzles 24, 26 is designed to produce a substantially spatially homogeneous overall distribution of the spray mixture on the area to be treated 42 of the agricultural surface 32.

In FIG. 1B, a spray nozzle unit is arranged on each partial width 22. The spray nozzle unit has the first spray nozzle 24, the second spray nozzle 26 and a third spray nozzle 28. The third spray nozzle 28 is formed, the

Spray mixture simultaneously with the first and the second spray nozzle 24, 26 by means of a third spray profile 28 to deliver a third spatial distribution on a third portion 48 of the agricultural area 32.

In this case, the first subarea 44 and the third subarea 48 as well as the second subarea 46 and the third subarea 48 partially overlap spatially and together form the area 42 to be treated. As a result, the spray nozzle unit with the three spray nozzles 24, 26, 28 is designed to produce a substantially spatially homogeneous overall distribution of the spray mixture on the area to be treated 42 of the agricultural surface 32.

In FIG. 1C, a plurality of third spray nozzles 28 and a plurality of fourth spray nozzles 30 are arranged at each partial width 22. The fourth spray nozzle 30 is formed, the spray mixture by means of a fourth spray profile 30 to a fourth spatial Dispense single distribution on a fourth portion 50 of the agricultural area 32.

The affiliation of a spray nozzle 28, 30 to a spray nozzle unit depends on the control of the individual spray nozzles 28, 30 and may change during the treatment of the agricultural surface 32. In this case, the spray nozzles 28, 30 belonging to a spray nozzle unit are arranged adjacent to the spray boom 18. An injection nozzle unit comprises adjacently arranged third spray nozzles 28 when these third spray mixtures 28 deliver spray mixture, and the fourth spray nozzles 30 disposed between these third spray nozzles 28, which do not emit spray, and arranged at the two outer edges of the spray nozzle unit fourth spray nozzles 30, which in turn Release spray mixture. Im shown

Exemplary embodiment has a first spray nozzle unit at least two fourth spray nozzles 30 and a third spray nozzle 28. A second spray nozzle unit has three fourth spray nozzles 30 and two third spray nozzles 28. A third spray nozzle unit comprises four fourth spray nozzles 30 and three third spray nozzles 28.

In this case, a third subregion 48 with one or two fourth subregions 50 and possibly two third subregions 48 are each partially overlapped with one another spatially and together form the region 42 to be treated. In contrast to the spray devices 10 shown in FIGS. 1A and 1B, in the spray device 10 shown in FIG. 1C, the fourth spray nozzles 30 are designed to release liquid only if exactly one of the two adjacent third spray nozzles 28 delivers liquid. As a result, the spray nozzle units with the spray nozzles 28, 30 are designed to produce a substantially spatially homogeneous overall distribution of the spray mixture on the area 42 of the agricultural area 32 to be treated.

Fig. 2A, B shows a schematic representation of spray profiles 34, 36, 38, 40 of an agricultural spray device 10 shown in Figs. 1A-C and the associated spatial distributions 54, 56, 58, 60, 62 of the liquid. Fig. 2A represents a partial width 22 of a spray boom 18 with two

Spray nozzle units. Each of the spray nozzle units has the first Spray nozzle 24, the second spray nozzle 26 and the third spray nozzle 28. The three spray nozzles 24, 26, 28 of a spray nozzle unit are arranged side by side on the partial width 22. The spray nozzle units are spatially adjacent to each other, so that all weeds on the agricultural surface 32 are treatable and no resistance formation occurs.

Further, Fig. 2A shows the spatial distribution of the discharged volume flow

V of the liquid on the agricultural surface 32 along a spatial axis x, which is aligned parallel to the spray boom 18. The spatial individual distributions 54, 56, 58 produced by the injection profiles 34, 36, 38 partially overlap spatially and result in a substantially spatially homogeneous overall distribution 62 of the spray mixture.

FIG. 2B shows a partial width 22 of a spray boom 18 with a plurality of third and fourth spray nozzles 28, 30 according to the exemplary embodiment from FIG. 1C.

Here, the third and fourth spray nozzles 28, 30 are alternating

next to each other and with a fixed spatial distance to the respective adjacent spray nozzles 28, 30 arranged on the spray boom 18. Furthermore, Fig. 2B shows the spatial distribution of the applied volume flow

V of the liquid on the agricultural surface 32 along the spatial axis x, which is aligned parallel to the spray boom 18. The spatial individual distributions 58, 60 generated by the spray profiles 38, 40 are partially superimposed spatially and result in a substantially spatially homogeneous overall distribution 62 of the spray mixture.

3 shows a flow chart of an embodiment of the present invention

approach presented as a method 100 for dispensing a liquid on a region to be treated 42 of an agricultural area 32 by means of an agricultural spray device 10 with at least one spray nozzle unit.

The method includes a step 110 of providing a

agricultural spraying device 10 with at least one spray nozzle unit for dispensing a liquid onto a region 42 to be treated of an agricultural surface 32. In addition, the method comprises a step 120 of dispensing the liquid onto the area to be treated 42 of the agricultural area 32 by means of the agricultural spraying device 10. For this purpose, the step 120 is subdivided into two sub-steps 122 and 124, which are carried out simultaneously. In sub-step 122, the liquid is dispensed by means of a first spray profile 34 to a first spatial individual distribution 54 of the liquid on a first subregion 44 of the agricultural surface 32. In sub-step 124, the liquid by means of a second

Spray profile 36 delivered to a second spatial single distribution 56 of the liquid on a second portion 46 of the agricultural surface 32. Here, the subregions 44, 46 are partially spatially superimposed and together form the area 42 of the agricultural area 32 to be treated, so that a substantially spatially homogeneous overall distribution 62 of the liquid on the area to be treated 42 of the agricultural area

32 results.

If an exemplary embodiment comprises an "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

Claims

claims

1. Agricultural spray device (10) with at least one

Spray nozzle unit for dispensing a liquid onto a region (42) of an agricultural surface (32) to be treated, wherein the

Spray nozzle unit is formed, the liquid by means of at least two partially overlapping spray profiles (34, 36, 38, 40) to a spatial single distribution (54, 56, 58, 60) of the liquid on a respective portion (44, 46, 48, 50 ) of agricultural land (32)

The subregions (44, 46, 48, 50) partially overlap spatially and together form the region (42) to be treated, so that a substantially spatially homogeneous overall distribution (62) of the liquid on the region (42) to be treated

agricultural area (32).

2. Agricultural spray device (10) according to claim 1, characterized

characterized in that the spray nozzle unit is formed, the

Liquid at the same time by means of at least two, in particular two different spray profiles (34, 36, 38, 40) deliver.

3. agricultural spray device (10) according to claim 1 or 2,

characterized in that the spray profiles (34, 36, 38, 40) for the substantially spatially homogeneous total distribution (62) on the agricultural surface (32) by setting at least one of the following parameters adjustable and / or are tuned to each other: spray angle of the spray nozzle unit , Spray pattern of the spray nozzle unit, pressure of the liquid at the spray nozzle unit, volume flow of the liquid through the spray nozzle unit, spray width at a defined spray height, size distribution of liquid droplets of the liquid dispensed, velocity of the liquid droplets, impact force of the liquid dispensed onto the agricultural surface (32).

4. Agricultural sprayer (10) according to one of the previous

Claims, characterized in that the spatial Individual distributions (54, 56, 58, 60) of the liquid on the respective portions (44, 46, 48, 50) of the agricultural surface (32) are substantially spatially inhomogeneous.

Agricultural spray device (10) according to any one of the preceding claims, characterized in that the spray nozzle unit at least two spray nozzles (24, 26, 28, 30) for generating the at least two spray profiles (34, 36, 38, 40), in particular further comprises a valve unit ,

Agricultural spray device (10) according to one of the preceding claims, characterized in that the spray nozzle unit is formed, the liquid by means of at least one further at least one of the spray profiles (34, 36, 38, 40) partially overlying spray profile (34, 36, 38, 40 ) to a further spatial individual distribution (54, 56, 58, 60) onto a further subarea (44, 46, 48, 50) of the agricultural surface (32), whereby the further subarea (44, 46, 48, 50) partially spatially superimposed on at least one of the partial regions (44, 46, 48, 50) and the region (42) to be treated comprises the further partial region (44, 46, 48, 50).

Agricultural spray device (10) according to one of the preceding claims, characterized by at least one further

Spray nozzle unit, which is adapted to the liquid on one of the treated area (42) of the agricultural surface (32) spatially spaced further to be treated area (42) of the agricultural surface (32) such that a

Substantially spatially homogeneous overall distribution (62) of the liquid on the further area (42) to be treated of the agricultural area (32) results.

Agricultural spray device (10) according to claim 7, characterized in that a spatial distance between the

Spray nozzle units is selected such that the treated

Regions (42) of the agricultural surface (32) substantially spatially adjacent to each other. Agricultural spray device (10) according to claim 8, characterized in that the spatial distance between the two spray nozzle units smaller, in particular substantially smaller than the spatial distance between the spray nozzles (24, 26, 28, 30) of the respective spray nozzle unit.

Agricultural spray device (10) according to any one of claims 7 to 9, characterized in that the spray nozzle units

- independently of each other and / or

- Depending on an operating condition of an adjacent

Spray nozzle unit of the spray device (10) and / or

- Depending on a property information and / or

Condition information of the agricultural area (32) are controllable.

Method (100) for dispensing a liquid onto a region (42) of an agricultural surface (32) to be treated by means of a

agricultural spray device (10) with at least one

Spray nozzle unit, wherein the liquid by means of two partially overlapping spray profiles (34, 36, 38, 40) each to a spatial

Single distribution (54, 56, 58, 60) of the liquid on each subregion (44, 46, 48, 50) of the agricultural surface (32) is discharged such that the sub-regions (44, 46, 48, 50) are partially spatially superimpose and together form the area to be treated (42) and a substantially spatially homogeneous total distribution (62) of the liquid on the treated area (42) of the agricultural surface (32) results.

Control device (20) which is adapted to at least one

Spray nozzle unit of an agricultural spray device (10) for discharging a liquid to a region to be treated (42) an agricultural surface (32) to control the liquid by means of at least two partially overlapping spray profiles (34, 36, 38, 40) to a spatial Single distribution (54, 56, 58, 60) of the liquid on each subarea (44, 46, 48, 50) of the agricultural surface (32) deliver such that the subregions (44, 46, 48, 50) partially overlap spatially and together the area to be treated (42) forming a substantially spatially homogeneous overall distribution (62) of the liquid on the area (42) to be treated of the agricultural surface (32).

A computer program configured to perform the method (100) of claim 11.

14. A machine-readable storage medium with a computer program stored thereon according to claim 13.