Advanced atomizer

The improved atomizer addresses the challenges of drift and distribution efficiency by using an 'aeroconfined' treatment with an air curtain and Coanda effect, resulting in reduced drift and enhanced productivity for targeted crop treatments.

FR3155726A3Active Publication Date: 2025-05-30O C L L SRL
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Patent Information

Application Number
FR2024012777
Authority / Receiving Office
FR · FR
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2023-11-29
Filing Date
2024-11-21
Publication Date
2025-05-30
Estimated Expiration
2034-11-21

AI Technical Summary

Technical Problem

Conventional atomizers face challenges in minimizing drift and optimizing product distribution, especially in varying vegetative conditions, which affects the efficiency and practicality of treatments.

Method used

The improved atomizer employs a controlled face-to-face 'aeroconfined' treatment with a turbine assembly and diffusers arranged within an air curtain, utilizing the Coanda effect for targeted distribution and minimizing drift.

Benefits of technology

This solution significantly reduces drift while increasing productivity, allowing for precise control over product distribution based on crop characteristics and conditions, and enabling remote monitoring and adjustment of treatment parameters.

✦ Generated by Eureka AI based on patent content.

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Abstract

Improved atomizer The innovation relates to an improved atomizer which is provided with means generating an air flow, connected to the turbine assembly and comprising a duct (50) formed by two parallel straight sections connected at the connecting ends by curved portions which connect said two parallel straight sections in such a way that the duct (50) has the shape of an oblong ring, provided with a slot-shaped outlet for the annular air flow having a corresponding oblong contour so as to determine a continuous tubular air curtain; the atomizer is equipped with diffusers (51, 52, 53) which comprise a plurality of nozzles placed inside the perimeter delimited by said air curtain in such a way that the same curtain determines a lateral confinement of the mixture delivered through said diffusers (51, 52, 53). Figure to be published with the abstract: Figure 1
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Description

Title of the invention: Improved atomizer

[0001] The present innovation relates to an improved atomizer. In particular, it is an atomizer of the drift recovery type, that is to say of the type used in trellis systems to distribute products in a targeted manner by completely treating at least the two rows between which the tractor moves. In addition to halving the treatment time of the surface unit, this type of machine, when equipped with a drift recovery system, allows considerable savings in distributed product and limited drift. As will also be described later, the effectiveness of the drift recovery system can vary depending on the vegetative vigor of the rows treated.

[0002] In this description, the term atomizer will be used to include similar equipment such as sprayers and the like.

[0003] In general, atomizers, whether carried, trailed or self-propelled, have the task of spraying the mixture into very fine droplets and transporting them onto the plant matrices. For this purpose, they are generally equipped with at least one tank filled with a mixture of water and pesticides; the tank is connected to a pump that pushes the mixture at the appropriate pressure to a plurality of nozzles that spray it onto the crops.

[0004] In its usual form, an atomizer comprises:

[0005] - a support frame;

[0006] - at least one reservoir intended to contain the mixture to be distributed;

[0007] - a pump and the associated circuits for transporting the liquid which have the function to suck the mixture itself from the tank and / or charge it with the energy necessary for spraying;

[0008] - distribution members, generally called nozzles, which subdivide the mixture in small drops (spraying) and contribute to its distribution on crops by means of an air flow;

[0009] - a possible additional tank for washing and cleaning the whole of the distribution system;

[0010] - a possible clean water tank for the operator's needs;

[0011] - control and regulation devices having the dual function of regulating the optimal technical dose of product distributed in the field and reduce drift.

[0012] Drift is the amount of product that does not reach the plant because it is not directed towards it or because it is carried away by the wind. This phenomenon is particularly serious near other crops or, even more negatively, near inhabited areas.

[0013] In an attempt to minimize the spread of drift in the environment, product recovery atomizers, also known as "tunnel" atomizers, have gained particular importance in recent times. These are machines capable of recovering at least some of the distributed plant protection products not received by the crops. Product recovery machines may be able to limit the drift effect and dispersion on the soil and in the environment in varying proportions depending on the growing season.

[0014] It is evident that if, with conventional atomizers, the highest percentage of dispersion of the product occurs in the first vegetative phases with sparse vegetation, in the same way the percentage of product recovered using specific machines decreases as the leaf mass increases. In any case, the use of this type of machinery in the field should, on the one hand, present advantages from an environmental point of view and, on the other hand, guarantee greater effectiveness of defense and a partial reduction of production costs thanks to the saving of phytosanitary products.

[0015] However, in the overall evaluation of the treatments it is necessary to consider that the analysis of the real benefits deriving from the recovery of the products in the field is quite complex and above all theoretical due to the numerous variables that come into play in the operational phase.

[0016] In other words, in certain situations of leaf growth and / or crop development and arrangement, the use of drift recovery sprayers, therefore equipped with "panels", may prove less practical and the treatment to be considered closer to the optimum may require the use of "conventional" distribution columns, i.e. without a drift recovery screen.

[0017] In practice, so far, it has seemed appropriate to work on different aspects to reduce drift, including: drop size, avoiding fine drops; spray technology, using "face-to-face" spraying; and eliminating losses by reformulating the spray system.

[0018] Advantageously, the present innovation aims to exceed the standards of the known art with a technology which combines the advantages of "face-to-face" spraying with those of spraying by recovery panels, providing an improved sprayer capable of reducing drift while being very practical and very productive.

[0019] In practice, the atomizer in question uses a controlled face-to-face "aeroconfined" treatment which, thanks also to the Coanda effect resulting from the conformation of its nozzles, defines a sort of "virtual closure" of the area to be treated.

[0020] The present invention relates to an improved atomizer, usable for the distribution of phytopharmaceutical products on crops, comprising:

[0021] - a support structure, connected to a motorization means to be moved according to a processing direction and to receive the movement;

[0022] - a turbine assembly connectable to said motorization means to receive the movement to draw air and determine an airflow, said turbine assembly being connected to a plurality of diffusers for atomizing a mixture with the airflow received by the turbine assembly;

[0023] - a first reservoir, connected to said turbine assembly and capable of containing a fluid to compose or constitute the liquid to be nebulized;

[0024] - a pump, connectable to this motorization means to receive the movement, and connected to the inlet of said first reservoir and to the outlet of said plurality of diffusers;

[0025] atomizer characterized in that it is provided with means for generating an air flow, connected to said turbine assembly and comprising a duct formed by two parallel rectilinear sections connected at the connecting ends by curved portions connecting said two parallel rectilinear sections so that the duct has the shape of an oblong ring, provided with an outlet for the flow of air in the form of an annular slot having a corresponding oblong contour so as to determine a continuous tubular air curtain, and by the fact that said diffusers comprise a plurality of nozzles placed in the perimeter delimited by said air curtain so that said air curtain determines a lateral confinement of the mixture distributed by means of said diffusers.

[0026] Advantageously, said support structure is capable of being connected to a tractor for towing.

[0027] Advantageously, the improved atomizer comprises a central unit provided with a memory with a database relating to the areas to be treated on which to deliver the phytopharmaceutical products and connected to a location device, said central unit being connected to said pump and / or to said turbine assembly and / or to said plurality of diffusers in order to regulate the supply of phytopharmaceutical products according to the data contained in said memory and the position detected by said location device, wherein the data contained in the memory of said central unit are linked to the characteristics of the crops in said areas to be treated and are linked to the type of crop and / or to the period during which the treatment takes place and / or to the type of treatment to be carried out and / or the treatments already carried out and to be carried out on the same area and / or to the specific area where the atomizer is located in the treatment area.

[0028] Advantageously, the improved atomizer comprises at least the first reservoir intended to contain water and a second reservoir intended to contain a pesticide to be diluted to obtain a mixture to be distributed on the crops, mixing means being provided, connected to said central unit to dose the percentage of pesticide in the mixture according to the data present in the memory and the position detected by said device for localization.

[0029] Advantageously, said mixing means comprise at least one metering pump capable of mixing said substances with water or another fluid according to predetermined percentages; said at least one metering pump being provided with a first inlet connected to said pump, a second inlet connected to said second reservoir, and an outlet connected to said plurality of diffusers, wherein said at least one metering pump is provided with a motor which uses the driving force derived from the water pressure determined by said pump.

[0030] Advantageously, said central unit is connected to a screen and / or a keyboard.

[0031] Advantageously, said central unit is connected to a wind sensor to modify the flow rate based on the data detected by said sensor and the pre-established adjustment parameters referring to the detected characteristics of the wind.

[0032] Advantageously, said central unit is connected to a communications network so as to allow remote control, as well as modification of the data and programs contained in said memory.

[0033] Advantageously, said memory stores the data relating to the treatments carried out by correlating them to the respective zones in which the treatments were carried out.

[0034] Advantageously, the diffusers of said plurality of diffusers are arranged and configured so as to send the product at different heights, characterized in that it comprises a regulator for said plurality of diffusers, connected to said central unit to differentiate the supply of said plurality of diffusers on the crops according to the altitude and the data / programs of said memory.

[0035] Advantageously, said memory contains, for each zone to be treated, a prescription card relating to the volume of liquid to be distributed and another relating to the adjustment of said turbine group.

[0036] Advantageously, said turbine assembly is of the tangential type and provided with means adapted to direct the flow differently in height.

[0037] Advantageously, said diffusers are arranged in pairs or multiples of pairs so as to affect two sections arranged on opposite sides during treatment with the product dispensed, i.e. to the left and to the right with respect to the direction of movement of the rows, characterized in that it is equipped with sensors designed to detect, respectively, in correspondence with the left side and the side right of the treatment row the density of the foliage to consequently determine the quantity of plant protection products to be applied.

[0038] Advantageously, the improved atomizer is capable of being connected to a connection network to enable remote monitoring of the distribution variables.

[0039] Advantageously, the improved atomizer is provided with a central unit on which resides dedicated software of the programmable logic controller (PLC) type equipped with a touch screen type screen for programming the position of the heads, the height and the stapling position, i.e. the distance between panels.

[0040] Advantageously, the improved atomizer is provided with a position detector and a central unit on which resides software capable of locating the atomizer and controlling its operating times.

[0041] Advantageously, the improved atomizer is equipped with a standardized international communication protocol of the ISOBUS type.

[0042] Advantageously, the improved atomizer is provided with a central unit on which resides software capable of controlling the scheduled maintenance of the transmission and the functional parts.

[0043] Advantageously, said support structure is of the mounted type.

[0044] Among the innovative features that determine the advantages of the improved atomizer that is the subject of the present research, the following can be mentioned:

[0045] - the conformation and positioning of the distribution means of the atomizer allow to increase productivity while considerably reducing drift;

[0046] - the atomizer can conveniently use prescription cards for the areas to be process and the quantity of product to be distributed;

[0047] - distribution can be controlled by presence sensors depending on the state vegetation on the sides (right and left) of each row;

[0048] - distribution variables can be controlled remotely;

[0049] - the atomizer can be equipped with automation with dedicated software and a PLC, possibly with touch screen to program the position of the heads, the height position and the stapling (distance between the panels);

[0050] - machine tracking and working time evaluation are possible;

[0051] - the sprayer can be equipped with an ISOBUS system;

[0052] - scheduled maintenance of the transmission and functional parts may be assured.

[0053] These and other advantages and characteristics of the present innovation will be better understood by any person skilled in the art from the following description and with the aid of the attached drawings, given as a practical example of the innovation, but not to be considered in a restrictive sense, in which:

[0054] [Fig-1] is a front perspective view of a possible exemplary embodiment of the present innovation, with parts removed to better highlight others;

[0055] [Fig.2] is a rear perspective view of the possible exemplary embodiment of the present innovation, with parts removed to better highlight others;

[0056] [Fig.3] is a front view of the possible exemplary embodiment of the present innovation, with parts removed to better highlight others;

[0057] [Fig.4] is a rear view of the possible exemplary embodiment of the present innovation, with parts removed to better highlight others;

[0058] [Fig.5] is a side view of the possible exemplary embodiment of the present innovation, with parts removed to better highlight others;

[0059] [Fig.6] shows a possible example of configuration of a support structure for the diffusers, which are inserted inside an oblong ring formed by means generating an air flow that determine a continuous tubular air curtain; in [Fig.6], the letters AE distinguish respectively a first side view (A), a first partially rotated view (B), a front view (C), a second partially rotated view (D) and a second side view (E);

[0060] [Fig.7] represents another possible example of implementation of the innovation, shown in front perspective view;

[0061] [Fig.8] represents the other possible example of implementation of the innovation, shown in rear perspective view;

[0062] [Fig.9] is a schematic representation of a possible configuration of an atomizer made in accordance with the innovation.

[0063] An improved atomizer manufactured in accordance with the present innovation can be used to distribute plant protection products on crops, for example on row crops.

[0064] In its general configuration, the atomizer 1 comprises:

[0065] - a support structure 10, which can be associated with a motorization means T to be moved in a processing direction and receive movement;

[0066] - a turbine group 3 connectable to said motorization means T to receive the movement so as to suck in air and determine an air flow, said turbine group 3 being connected to a plurality of diffusers 51, 52, 53 intended to nebulize a mixture with the air flow received from the turbine group 3;

[0067] - a first tank 40, connected to said turbine group 3 and adapted to contain a fluid to compose or constitute the liquid to be atomized;

[0068] - a pump 2, connectable to said motorization means T to receive the movement, and connected at the inlet to said reservoir 40 and at the outlet to said plurality of diffusers 51, 52, 53.

[0069] Advantageously, the atomizer 1 is provided with means for generating an air flow 50, connected to said turbine assembly 5 and comprising a duct 50 formed by two parallel straight sections connected at the connecting ends by curved portions which connect said two parallel straight sections in such a way that the duct 50 has the shape of an oblong ring, provided with an outlet 55 for the air flow in the form of an annular slot having a corresponding oblong contour so as to determine a tubular air curtain and by the fact that said diffusers 51, 52, 53 comprise a plurality of nozzles placed inside the perimeter delimited by said air curtain in such a way that this same curtain determines a lateral confinement of the mixture delivered through said diffusers 51, 52, 53.

[0070] In practice, the flow generating means 50 are connected to the turbine group 3 via a series of conduits, indicated by the reference 78 so as to deliver, through the annular slot 55, an air flow shaped so as to define an air curtain which delimits the nozzles 51, 52, 53 which are arranged inside the oblong ring formed by the curtain. In particular, the nozzles 51, 52, 53 may be placed in a median position, for example along the vertical axis x which divides the flow generating means 50 medially.

[0071] The flow rate determined by the turbine unit 3 is sent through the duct 7 to the flow generating means 50 and to the nozzles 51, 52, 53; the air flow through the ducts 78 is then sent to the flow generating means 50, while the remaining part of the flow is used for the delivery of the mixture to be distributed through the nozzles 51, 52, 53.

[0072] The presence of the air curtain eliminates or at least considerably reduces the drift.

[0073] The flow generating means 50 may be of a type similar to those covered by patent EP3726980B1 and are therefore not described in further detail.

[0074] Reference will now be made to the diagram of [Fig.9] to describe certain aspects of the present innovation. With reference to the attached drawing, in which the components of the innovation are only shown schematically, the atomizer 1 in question comprises the following constituent elements which will be better described hereinafter:

[0075] - a support structure 10, which can be associated with a motorization means T to be moved in a processing direction and receive movement;

[0076] - a turbine group 3 connectable to said motorization means T to receive the movement so as to suck in air and determine an air flow, said turbine group 3 being connected to a plurality of diffusers 51, 52, 53 intended to nebulize a mixture with the air flow received from the turbine group 3;

[0077] - a first tank 40, connected to said turbine group 3 and adapted to contain a fluid to compose or constitute the liquid to be atomized;

[0078] - a pump 2, connectable to said motorization means T to receive the movement, and connected at the inlet to said reservoir 40 and at the outlet to said plurality of diffusers 51, 52, 53;

[0079] - a central unit UC equipped with a memory M with a relative database to the areas to be treated on which to deliver the phytopharmaceutical products and connected to a GPS location device, called central unit UC being connected to said pump 2 and / or to said group of turbines 3 and / or to said plurality of diffusers 51, 52, 53 so as to regulate the delivery of phytopharmaceutical products according to the data contained in said memory M and the position detected by said GPS location device.

[0080] The atomizer support structure 1 is not shown in [Fig.9]; it may consist of a chassis that can be carried by a tractor or, as illustrated in Figures 1 to 5 and 7 to 8, by a chassis 10 equipped with wheels 11 so that it can be towed. In practice, the atomizer 1 is supported by a structure that can be associated with a suitable motorization means T equipped with a thermal or electric motor or a combination of the two types of motor. The motorization means serve both to move the atomizer 1 in a treatment direction and to ensure the movement of the atomizer itself for the movement of its active parts (pumps, fans, etc.). The atomizer 1 may also be a carried structure, i.e. not towed but placed on a means of transport.

[0081] The turbine group 3 may comprise one or more fans and may be connected to the motorization means T (for example the power take-off of a tractor or a generator) to receive the movement and suck in air and determine an air flow to be sent to the plurality of diffusers 51, 52, 53 intended to nebulize the mixture thanks to the air flow received from the turbine group 3.

[0082] Still referring to the example of [Fig.9], the atomizer 1 comprises at least a first reservoir 40, connected to the turbine group 3 and capable of containing a fluid to compose or constitute the liquid to be atomized; in practice, the atomizer 40 may comprise the first reservoir 40 which may contain the mixture to be distributed over the crops or may contain water to be mixed with the phytopharmaceutical products possibly contained in a second reservoir 41 then mixed by means of relative mixing means 4 which may have a different shape for this purpose.

[0083] The atomizer 1 is equipped with a pump 2, which can also be connected to the motorization means T to receive the movement: the pump 2 is connected to the inlet of the reservoir 40 and to the outlet towards the diffusers 51, 52, 53. The connection between the pump and the diffusers can be made with a connection passing through the mixer 4 and / or the turbine group 3 and / or a regulator 5 described below.

[0084] Advantageously, the atomizer 1 comprises a central unit UC which may consist of one or more electronic cards equipped with resident software and a memory M with a database relating to the areas to be treated on which to deliver phytopharmaceutical products. The central unit UC is equipped with - or connected to - a GPS location device. The central unit UC is also connected to the pump 2 and / or to the turbine group 3 and / or to the diffusers 51, 52, 53: it is thus possible to regulate the flow rate of the phytopharmaceutical products according to the data contained in said memory M and the position detected by said GPS location device.

[0085] In [Fig.9], the dotted lines 8 indicate the connection between the central unit UC and the parts connected to it; this type of connection can be made using cables or wirelessly.

[0086] The dashed line 6 indicates the connection which transmits the movement of the tractor T to the pump 2, to the turbine unit 3, to the distributor 4 and to the regulator 5. The connection 6 can be made with means adapted according to the driving force used; in the case of a sample from the power take-off of a tractor T, a mechanical connection will be provided, for example cardanic in the case of an electric driving force, the connection 6 could comprise cables, etc.

[0087] The continuous line 7 indicates the pipes or conduits for conveying fluids such as, for example, air, water, a phytopharmaceutical product or mixtures of these elements. Sections 70 and 71 indicate two conduits which connect the two reservoirs 40 and 41 to the main conduit 7.

[0088] In one possible embodiment, the mixing means 4 may comprise a dosing pump 4 capable of mixing said substances with water or another fluid according to predetermined percentages: The dosing pump 4 may be provided with a first inlet 42 connected to the pump 2, a second inlet 43 connected to the second reservoir 41, and an outlet 44 connected to the diffusers 51, 52, 53; in this case, the dosing pump 4 may be equipped with a motor which uses the driving force derived from the water pressure determined by the pump 2, driven by an electric motor which regulates the flow rate according to the set dose.

[0089] In practice, the mixing means can compose the mixture from the water of the first tank 40 and the product of the second tank 41; alternatively, the mixing means 4 can receive water from the pump 2 which takes it from the first tank 40 to mix it with the product which arrives at the mixer 4 of the second tank 4L

[0090] The data contained in the memory M of the central unit UC are related to the characteristics of the crops in the areas to be treated and are related to the type of crop and / or the duration of the treatment, place and / or type of treatment to be carried out and / or to the treatments already carried out and to be carried out on the same area and / or on the specific area in which the equipment 1 is located within the treatment area. In other words, the different plots of an agricultural enterprise can be distributed according to the crops present so that the treatment carried out is as correct as possible taking into account a plurality of parameters among which the period during which the treatment, the type of treatment to be carried out, the treatments already carried out and to be carried out on the same area and, in addition, also the specific positioning of a group of plants such as, for example, the rank to which they belong.

[0091] The schematic blocks S and K represent respectively a screen S and a keyboard K which can be connected to the central unit UC. In this way, it is possible to visualize the processing already carried out and to define, via the keyboard or the touch screen, differentiated deliveries according to the most advantageous routes to be followed by the machine as described previously.

[0092] The central unit UC can also be connected to a wind sensor V to modify the output according to the data detected by the sensor V and pre-established adjustment parameters referring to the detected characteristics of the wind.

[0093] The same central unit UC can advantageously be connected to a communication network W (for example the Internet) in order to allow remote control, as well as modification of the data and programs contained in said memory M. In practice, it may be possible, even remotely, to check and use the data present in memory, to modify the resident software, to vary the delivery parameters, etc. In the memory M, the data relating to the treatments carried out can also be stored in correlation with the respective areas in which the treatments were carried out and this data can also be used remotely via the network W.

[0094] Another feature of the equipment 1 is the possibility of differentiating the treatment in the case of crops that have differences related not only to the area in which they are located but also to the different conformation of the plant in its vertical development. In practice, the diffusers 51, 52, 53 can advantageously be arranged and configured so as to send the product at different heights by passing the flow of the mixture through a regulator 5 connected to the central unit UC and capable of differentiating the output of the loudspeakers 51, 52, 53 depending on the height and the data / programs present in memory M. In the diagram used as an example, there are three diffusers 51, 52, 53 on each side and the stylized drawing A represents a plant which is struck at three different heights by the flows of phytosanitary product delivered by the nozzles of the three diffusers.

[0095] In conclusion, the central unit UC is therefore equipped with a memory M which contains, for each area to be treated, a prescription card relating to the volume of liquid to be distributed and another relating to the regulation of said turbine group. 3. In other words, these prescription cards contain, for each plot or area to be treated, the data relating to the quantity of mixture to be distributed, to its percentage of product, considering all the variables indicated previously.

[0096] The turbine group 3 may be of the tangential type and equipped with means adapted to orient the discharge differently in height.

[0097] Furthermore, advantageously, the atomizer 1 concerned can differentiate the flow rate according to the leaf density of the plants to be treated. In the diagram of [Fig.9], SF indicates a functional block delegated to detect the foliage density and capable of sending the relevant values ​​with which to calibrate the power supply to the central unit UC.

[0098] In other words, with the diffusers 51, 52, 53 arranged in pairs or multiples of pairs, the vegetation is struck by the product during treatment in correspondence with two sections arranged on opposite sides, that is to say to the left and to the right, relative to the direction of movement of the rows. The presence of SF sensors arranged to detect respectively the density of the foliage to the left and to the right of the row to be treated makes it possible to determine accordingly the quantity of phytopharmaceutical products to be distributed.

[0099] The atomizer 1 can be connected to a connection network W to allow remote monitoring of the distribution variables.

[0100] In the central unit UC, there may be dedicated PLC type software equipped with a touch screen S to program the position of the heads, the height position and the stapling (distance between the panels).

[0101] It is also possible to provide a GPS position detector which, connected to the central unit UC on which the software resides, makes it possible to locate the atomizer and monitor the associated working times.

[0102] The atomizer can be equipped with an international standardized communication protocol of the ISOBUS type. ISOBUS is an international standardized communication protocol that allows different agricultural equipment / equipment to communicate with each other via a single common language.

[0103] Additionally, software capable of controlling scheduled maintenance of the transmission and functionality components may be resident in the central processing unit UC.

[0104] Of course, the innovation is not limited to what has been described and illustrated, and the execution details can therefore vary in an equivalent manner in the shape, dimensions, arrangement of the elements, nature of the materials used, without however departing from the scope of the present invention.

Claims

Claims

1. Improved atomizer, usable for the distribution of phytopharmaceutical products on crops, comprising: - a support structure, connected to a motorization means (T) to be moved in a treatment direction and to receive the movement; - a turbine assembly (3) connectable to said motorization means (T) to receive the movement in order to suck in air and determine an air flow, said turbine assembly (3) being connected to a plurality of diffusers (51, 52, 53) intended to atomize a mixture with the air flow received by the turbine assembly (3); - a first reservoir (40), connected to said turbine assembly (3) and capable of containing a fluid to compose or constitute the liquid to be nebulized; - a pump (2), connectable to this motorization means (T) to receive the movement, and connected to the inlet of said first reservoir (40) and to the outlet of said plurality of diffusers (51, 52, 53);atomizer (1) characterized in that it is provided with means for generating an air flow, connected to said turbine assembly (3) and comprising a duct (50) formed by two parallel rectilinear sections connected at the connecting ends by curved portions connecting said two parallel rectilinear sections so that the duct (50) has the shape of an oblong ring, provided with an outlet (55) for the flow of air in the form of an annular slot having a corresponding oblong contour so as to determine a continuous tubular air curtain, and by the fact that said diffusers (51, 52, 53) comprise a plurality of nozzles placed in the perimeter delimited by said air curtain so that said air curtain determines a lateral confinement of the mixture distributed by means of said diffusers (51, 52, 53).;

2. Improved atomizer, according to claim 1, characterized in that said support structure is capable of being connected to a tractor for towing.

3. Improved atomizer, according to claim 1 or 2, characterized in that it comprises a central unit (UC) provided with a memory (M) with a database relating to the areas to be treated on which deliver the plant protection products and connected to a location device (GPS), said central unit (UC) being connected to said pump (2) and / or to said turbine assembly (3) and / or to said plurality of diffusers (51, 52, 53) in order to regulate the supply of plant protection products according to the data contained in said memory (M) and the position detected by said location device (GPS), wherein the data contained in the memory (M) of said central unit (UC) are linked to the characteristics of the crops in said areas to be treated and are linked to the type of crop and / or the period during which the treatment takes place and / or the type of treatment to be carried out and / or the treatments already carried out and to be carried out on the same area and / or to the specific area where the atomizer (1) is located in the treatment area.

4. Improved atomizer, according to one of the preceding claims 1 to 3, characterized in that it comprises at least the first reservoir (40) intended to contain water and a second reservoir (41) intended to contain a pesticide to be diluted to obtain a mixture to be distributed on the crops, mixing means being provided, connected to said central unit (UC) to dose the percentage of pesticide in the mixture according to the data present in the memory (M) and the position detected by said device for location (GPS).

5. Improved atomizer, according to claim 4, characterized in that said mixing means comprise at least one metering pump (4) capable of mixing said substances with water or another fluid according to predetermined percentages; said at least one metering pump (4) being provided with a first inlet connected to said pump (2), a second inlet connected to said second reservoir (41), and an outlet connected to said plurality of diffusers (51, 52, 53), wherein said at least one metering pump (4) is provided with a motor which uses the driving force derived from the water pressure determined by said pump (2).

6. Improved atomizer, according to one of the preceding claims 3 to 5, characterized in that said central unit (UC) is connected to a screen (S) and / or to a keyboard (K).

7. Improved atomizer, according to one of the preceding claims 3 to 6, characterized in that said central unit (UC) is connected to a wind sensor (V) to modify the flow rate according to the data detected by said sensor (V) and the pre-established adjustment parameters referring to the detected characteristics of the wind.

8. Improved atomizer, according to one of the preceding claims from 3 to 7, characterized in that said central unit (UC) is connected to a communication network (W) so as to allow remote control, as well as modification of the data and programs contained in said memory (M).

9. Improved atomizer, according to one of the preceding claims 3 to 8, characterized in that said memory (M) stores the data relating to the treatments carried out by correlating them to the respective zones in which the treatments were carried out.

10. Improved atomizer, according to one of the preceding claims 3 to 9, characterized in that the diffusers of said plurality of diffusers (51, 52, 53) are arranged and configured so as to send the product at different heights, characterized in that it comprises a regulator (5) for said plurality of diffusers (51, 52, 53), connected to said central unit (UC) to differentiate the supply of said plurality of diffusers (51, 52, 53) on the crops according to the altitude and the data / programs of said memory (M).

11. Improved atomizer, according to one of the preceding claims 3 to 10, characterized in that said memory (M) contains, for each zone to be treated, a prescription card relating to the volume of liquid to be distributed and another relating to the adjustment of said turbine group (3).

12. Improved atomizer, according to one of the preceding claims 3 to 11, characterized in that said turbine assembly (3) is of the tangential type and provided with means adapted to direct the flow differently in height.

13. Improved atomizer, according to one of the preceding claims 1 to 12, wherein said diffusers (51, 52, 53) are arranged in pairs or multiples of pairs so as to affect two sections arranged on opposite sides during the treatment with the dispensed product, produced, that is to say to the left and to the right with respect to the direction of evolution of the rows, characterized in that it is equipped with sensors (SF) designed to detect, respectively, in correspondence with the left side and the right side of the row of treatment of foliage density to consequently determine the quantity of plant protection products to be applied.

14. Improved atomizer, according to one of the preceding claims 1 to 13, characterized in that it is capable of being connected to a connection network (W) to allow remote monitoring of the distribution variables.

15. Improved atomizer, according to one of the preceding claims 1 to 14, characterized in that it is provided with a central unit (UC) on which resides dedicated software of the programmable automaton, PLC type, provided with a touch screen type screen (S) for programming the position of the heads, the height and the stapling position, that is to say the distance between panels.

16. Improved atomizer, according to one of the preceding claims 1 to 15, characterized in that it is provided with a position detector (GPS) and a central unit (UC) on which resides software capable of locating the atomizer and controlling its operating times.

17. Improved atomizer, according to one of the preceding claims 1 to 16, characterized in that it is equipped with a standardized international communication protocol of the ISOBUS type.

18. Improved atomizer, according to one of the preceding claims 1 to 17, characterized in that it is provided with a central unit (UC) on which resides software capable of controlling the scheduled maintenance of the transmission and the functional parts.

19. Improved atomizer, according to claim 1 or according to one of claims 3 to 18, characterized in that said support structure is of the mounted type.