EP0961659B1 - Buse de pulverisation amelioree - Google Patents
Buse de pulverisation amelioree Download PDFInfo
- Publication number
- EP0961659B1 EP0961659B1 EP98962503A EP98962503A EP0961659B1 EP 0961659 B1 EP0961659 B1 EP 0961659B1 EP 98962503 A EP98962503 A EP 98962503A EP 98962503 A EP98962503 A EP 98962503A EP 0961659 B1 EP0961659 B1 EP 0961659B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzles
- nozzle
- adjustment
- spray
- discharge orifice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/044—Slits, i.e. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
Definitions
- the present invention relates to the general technical field of agricultural machinery and in particular machines or devices for spray.
- the latter are most often fitted with ramps provided with spray nozzles intended for spreading, for example, treatment products phytosanitary on treatment surfaces such as fields or crops, from a tank containing said treatment products.
- Other applications for example the distribution of liquid fertilizers, can also enter the part of the present invention. It is desirable in almost all applications, to control the quantity of product sprayed and spread on the ground or on a culture.
- Spray bars for this purpose are often provided with particular nozzles having two or three openings of different dimensions. It is then necessary to select one of the openings, as well as a corresponding pressure generated by a pump, for a given forward speed. We know the amount of product spread by unit of area, the width of the sprayer boom being known.
- a judicious choice of the speed of advance, the dimension of the opening of the nozzles and the pressure inside the sprayer allows increase the droplet size of the product jet.
- Document EP-A-556 121 shows a method of regulation according to the preamble of claim 1 and an agricultural spray nozzle according to the preamble of claim 9.
- the object of the present invention is to remedy the drawbacks of the state of technique and to increase the adjustment possibilities of a sprayer, taking account for a large number of parameters.
- Another object of the invention aims to optimize a method for regulating a sprayer and to improve the performance of the mounted spray nozzles on such a sprayer.
- An additional object of the present invention aims to correct in time the setting of a sprayer according to treatment parameters derived from setpoint information or read via sensors.
- An additional object of the present invention aims to manage the amount of sprayed product, individually by each nozzle of a sprayer.
- the objects assigned to the present invention are achieved using a method regulating agricultural spray nozzles consisting in controlling, in function of treatment parameters, the flow rate of a widespread treatment product by a set of nozzles by dimensioning with an adjusting means the orifice expelling said nozzles to obtain a given opening or closing of said expulsion orifice, according to values relating to information from sensors or setpoints, characterized in that it consists in using as that means for adjusting at least one piezoelectric element.
- an agricultural spray nozzle consisting of a nozzle body provided with at least one inlet port and at least one expulsion port for a product of treatment, said nozzle comprising adjustment means for acting on the dimensions of the expulsion orifice and thus modify the opening of said nozzle, characterized in that the adjustment means comprise at least one element piezoelectric.
- the nozzle of spray consists of at least one closure element arranged in the nozzle body and movable under the effect of the adjustment means between positions corresponding to the closure and calibrated openings of the expulsion orifice.
- Another feature of the invention is obtained by the use of at least a piezoelectric element as an adjusting means for controlling a controlled opening or closing of an expulsion orifice of a nozzle agricultural sprayer.
- a nozzle (1) according to the invention and shown in Figure 1, is shown in section for a better visualization of its constituent parts.
- the nozzle (1) thus comprises a nozzle body (1a), for example cylindrical or tubular provided with an inlet orifice (1b).
- the latter is connected to a supply line (not shown) in treatment product.
- the nozzle (1) is also provided with at least one expulsion orifice (1c), as shown in Figures 1 and 2.
- the nozzle body (1a) is internally coated with a material (2) elastically deformable of the elastomer type.
- the nozzle (1) is advantageously consisting of at least one closure element (3, 4) mounted in the nozzle body (1a).
- the nozzle (1) also comprises adjustment means for acting on the dimensions of the expulsion orifice (1c). These adjustment means are suitable for order a given opening or closing of the expulsion orifice (1c).
- the closing element (3, 4) is advantageously displaceable under the effect of adjustment means between positions corresponding to closure and to calibrated openings of the expulsion orifice (1c).
- the nozzle (1) has two closing elements (3) and (4), of complementary shape and cooperating with each other, so as to define and size the expulsion orifice (1c).
- the elements of closure (3) and (4) are actuated by the adjustment means.
- the elasticity material (2) absorbs the movements of the closure elements (3) and (4).
- the adjustment means are advantageously integrated in the nozzle body (1a) and comprise at least one piezoelectric element.
- the adjustment means comprise two pads piezoelectric (5) and (6).
- the use of at least one piezoelectric element is advantageous in the to the extent that such use allows the nozzle (1) to be associated with a control (not shown) and to receive from said control unit electrical signals intended to control a controlled opening or a closing the expulsion orifice (1c).
- the control unit may include suitable electronic means and / or a microcomputer.
- the elements of closure (3) and (4) are separated locally by the piezoelectric pads (5) and (6).
- the latter are arranged on either side of the tongue (4a) intended to more or less deeply engage in a notch (3a) of form complementary. This commitment is made against the elasticity of the material (2).
- the tongues (4a) and the notches (3a) are made with parts of the closing elements (4) and (3) and serve to guide the movement of said elements closing elements (3, 4).
- the material (2) can also be used as a seal.
- other seals not shown can also be provided and fitted by all means in the nozzle (1).
- the nozzle (1) therefore comprises at least at the interface of the nozzle body (1a) and the (of) closure element (s) (3, 4), the material (2) whose elasticity allows absorbing the displacements of said closing element (s) (3, 4).
- the amplitude of the deformations of the piezoelectric pellets (5, 6) allows the two closing elements (3) and (4) to be moved apart or brought closer. This corresponds respectively to an enlargement and a narrowing of opening of the nozzle (1).
- Electrical signals show an established variation by predetermined control laws. These are for example stored in the control unit and take into account various parameters likely to be involved in a spraying operation.
- Each nozzle (1) is advantageously controlled individually by the ordered.
- the nozzle (1) can also be controlled directly by information from a sensor mounted on the sprayer (10) or by a set point the user.
- the nozzle (1) is for example mounted, by any known means on a ramp (11) spraying an agricultural sprayer (10).
- the ramp (11) can be provided with a set of nozzles (1).
- the nozzle (1) according to the invention therefore makes it possible to implement the control method for sprayers detailed below.
- the regulation method according to the invention consists in dimensioning the expulsion orifice (1c) of each nozzle (1) to obtain a given opening or a closure, according to values relating to information from sensors or instructions.
- the regulation process is remarkable in that it allows to act on each nozzle (1) individually or on a selection of nozzles (1).
- the regulation method according to the invention also consists in using electronic means or a microcomputer to control flow rates compatible with the processing parameters that have been taken into account.
- the microcomputer is also able to memorize the quantities of sprayed product.
- the regulation process therefore consists in managing the operation of the sprayer (10), for example, using the microcomputer.
- the latter is therefore able to control the operation of a pump and therefore control spray pressure
- the regulation method according to the invention can also consist of analyze data related to the operation of the sprayer (10) and / or the nozzles (1) and to make automatic corrections based on information stored.
- An additional step is to act on the configuration of the orifice expulsion (1c) of the nozzles (1) to modify the shape of the jets (7) of the product treatment expelled.
- the regulation method according to the invention consists in particular in: use electrical signals to control opening or closing the nozzle expulsion orifice (1).
- the nozzles (1) according to the invention have either in their construction, either in their operation undeniable advantages.
- Each nozzle (1) has a variable flow rate, which can be controlled from very precisely.
- the amplitude of deformation of the piezoelectric pads (5, 6) is proportional to an electrical signal, which is adjustable with a large precision.
- the nozzle system (1) can also be combined with a sensors to increase the degree of accuracy and control of operation a sprayer (10) according to the invention.
- the quantities of treatment products sprayed at a geographical position can also be stored in the control unit or transmitted by any known means of communication (for example GPS) to a central computer. The latter can then update the data stored in the control unit when the sprayer (10) is moved from a plot to a other. This is particularly interesting for the distribution of liquid fertilizers or to spread various types or dosages of phytosanitary products, passing from one plot to another.
- the control unit comprises for example a computer capable of memorize standard curves, non-linearity coefficients and others parameters useful for calculation.
- a calculator has the advantage of work in real time, which, combined with an almost instantaneous reactivity of nozzles (1), provides optimum spray precision.
- the modification of the forward speed is also taken into account immediately, and the nozzle flow (1) is modulated without delay.
- Another advantage of the nozzles (1) according to the invention lies in the fact that we can take into account the appearance of the wind during a spraying, avoiding complicated and time-consuming corrective adjustment of the sprayer (10).
- the nozzle (1) can be mounted on a complementary container containing the product (s) high concentration phytosanitary products.
- the additional pressure vessel allows, thanks to the nozzle (1), to discharge a determined quantity of product phytosanitary to a mixing chamber.
- the latter is also supplied with water by the sprayer tank (10), which contains exclusively water intended for the dilution of said phytosanitary product.
- the treatment product obtained in the mixing chamber can then be conveyed to the ramp (11), itself provided, if necessary, with nozzles (1) for spraying.
- the water contained in the sprayer tank (10) does not enter contact with the contents of the additional container so as to preserve water without treatment products in the tank (10).
- the complementary container (s) associated with the chamber of corresponding mixture are mounted either directly on the ramp (11) or on a suitable support, provided on the sprayer (10).
Landscapes
- Catching Or Destruction (AREA)
- Nozzles (AREA)
- Special Spraying Apparatus (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Fire-Detection Mechanisms (AREA)
Description
- la figure 1 représente une vue en coupe transversale d'un exemple de réalisation d'une buse de pulvérisation conforme à l'invention;
- la figure 2 représente une vue en coupe simplifiée longitudinale d'un autre exemple de réalisation d'une buse de pulvérisation conforme à l'invention ;
- la figure 3 représente une vue de face d'un exemple de pulvérisateur comprenant des buses de pulvérisation conformes à l'invention.
Claims (19)
- Procédé de régulation de buses de pulvérisation agricoles consistant à commander, en fonction de paramètres de traitement, le débit d'un produit de traitement répandu par un jeu de buses (1) en dimensionnant à l'aide d'un moyen de réglage l'orifice d'expulsion (1c) desdites buses (1) pour obtenir une ouverture donnée ou une fermeture dudit orifice d'expulsion (1c) et ce, selon des valeurs se rapportant à des informations issues de capteurs ou de consignes, caractérisé en ce qu'il consiste à utiliser en tant que moyen de réglage au moins un élément piézo-électrique.
- Procédé selon la revendication 1, caractérisé en ce qu'il consiste à agir sur chaque buse (1) individuellement ou sur une sélection de buses (1).
- Procédé selon la revendication 1 ou 2, caractérisé en ce qu'il consiste à utiliser des moyens électroniques ou un micro-ordinateur pour commander des débits compatibles avec les paramètres de traitement.
- Procédé selon la revendication 3, caractérisé en ce qu'il consiste à gérer, à l'aide du micro-ordinateur, le fonctionnement du pulvérisateur (10).
- Procédé selon la revendication 3 ou 4, caractérisé en ce qu'il consiste à analyser des données liées au fonctionnement du pulvérisateur (10) et/ou des buses (1) et à effectuer des corrections automatiques en fonction d'informations mémorisées.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il consiste à agir sur la configuration de l'orifice d'expulsion (1c) des buses (1) pour modifier la forme des jets (7) du produit de traitement expulsé.
- Procédé selon la revendication 6, caractérisé en ce qu'il consiste à adapter la distance entre les buses (1) et la zone à traiter, en fonction de la configuration des jets (7).
- Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il consiste à utiliser des signaux électriques pour commander une ouverture donnée ou la fermeture de l'orifice d'expulsion (1c) des buses (1).
- Buse (1) de pulvérisation agricole constituée d'un corps de buse (la) pourvue d'au moins un orifice d'entrée (1b) et d'au moins un orifice d'expulsion (1c) pour un produit de traitement, ladite buse (1) comprenant des moyens de réglage pour agir sur les dimensions de l'orifice d'expulsion (1c) et modifier ainsi l'ouverture de ladite buse (1), caractérisée en ce les moyens de réglage comprennent au moins un élément piézo-électrique.
- Buse (1) de pulvérisation selon la revendication 9, caractérisée en ce que les moyens de réglage sont intégrés dans le corps de buse (la).
- Buse (1) de pulvérisation selon la revendication 9 ou 10, caractérisée en ce qu'elle est associée à une unité de commande destinée à transmettre des signaux électriques aux moyens de réglage.
- Buse (1) de pulvérisation selon l'une quelconque des revendications 9 à 11, caractérisée en ce qu'elle est constituée d'au moins un élément de fermeture (3, 4) monté dans le corps de buse (1a) et déplaçable sous l'effet des moyens de réglage entre des positions correspondant à la fermeture et à des ouvertures calibrées de l'orifice d'expulsion (1c).
- Buse (1) de pulvérisation selon la revendication 12, caractérisée en ce qu'elle comporte deux éléments de fermeture (3) et (4), de forme complémentaire et coopérant entre eux de façon à définir et dimensionner l'orifice d'expulsion (1c), lesdits éléments de fermeture (3, 4) étant actionnés par les moyens de réglage.
- Buse de pulvérisation selon l'une quelconque des revendications 9 à 13, caractérisée en ce que les moyens de réglage comprennent deux pastilles piézo-électriques (5, 6).
- Buse de pulvérisation agricole selon l'une quelconque des revendications 12 à 14, caractérisée en ce qu'elle comporte au moins à l'interface du corps de buse (la) et du (des) élément(s) de fermeture (3, 4), un matériau (2) élastiquement déformable, dont l'élasticité permet d'absorber les déplacements dudit (desdits) élément(s) de fermeture (3, 4).
- Rampe de pulvérisation (11) comportant des buses (1) conformes à l'une quelconque des revendications 9 à 15.
- Pulvérisateur (10) agricole pourvu de buses (1) de pulvérisation conformes à l'une quelconque des revendications 9 à 16.
- Pulvérisateur (10) agricole comportant des buses de pulvérisation mettant en oeuvre le procédé de régulation, conforme à l'une quelconque des revendications 1 à 8.
- Unité de commande pour pulvérisateur (10) agricole, comportant des moyens pour piloter des buses (1) de pulvérisation selon un procédé de régulation conforme à l'une quelconque des revendications 1 à 8.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9716553A FR2772646B1 (fr) | 1997-12-19 | 1997-12-19 | Buse de pulverisation amelioree |
FR9716553 | 1997-12-19 | ||
PCT/FR1998/002775 WO1999032230A1 (fr) | 1997-12-19 | 1998-12-18 | Buse de pulverisation amelioree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0961659A1 EP0961659A1 (fr) | 1999-12-08 |
EP0961659B1 true EP0961659B1 (fr) | 2002-10-02 |
Family
ID=9515173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98962503A Expired - Lifetime EP0961659B1 (fr) | 1997-12-19 | 1998-12-18 | Buse de pulverisation amelioree |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0961659B1 (fr) |
AT (1) | ATE225207T1 (fr) |
AU (1) | AU1765899A (fr) |
CA (1) | CA2279831A1 (fr) |
DE (1) | DE69808434T2 (fr) |
DK (1) | DK0961659T3 (fr) |
FR (1) | FR2772646B1 (fr) |
NZ (1) | NZ337163A (fr) |
WO (1) | WO1999032230A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7185833B2 (en) | 2004-03-18 | 2007-03-06 | Ernest Geskin | Method for fluid jet formation and apparatus for the same |
DE102007036870B4 (de) | 2007-08-06 | 2010-04-08 | Leeb Mechanik Gmbh | Verstellbare Düsenwinkel |
DE102018126586A1 (de) | 2018-10-25 | 2020-04-30 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Landwirtschaftliches Spritzgerät |
DE102018126588A1 (de) | 2018-10-25 | 2020-04-30 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Verfahren zum Ausbringen von Flüssigkeit |
DE102018126585A1 (de) | 2018-10-25 | 2020-04-30 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Verfahren zum Ausbringen von Spritzflüssigkeit |
CA3199749A1 (fr) * | 2020-10-29 | 2022-05-05 | Ogive Technology, Inc. | Buse de pulverisation a commande dynamique, systeme de commande et procede |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH240951A (fr) * | 1943-10-01 | 1946-02-15 | Stauffer Frederic | Lance d'arrosage. |
US4167247A (en) * | 1978-01-06 | 1979-09-11 | Sons Mack D | Spray control apparatus |
DE3010178C2 (de) * | 1980-03-17 | 1985-10-03 | Kraftwerk Union AG, 4330 Mülheim | Mit einem Schnellschlußventil ausgerüstete Schlitzdüse zur Herbeiführung impulsartiger Gasströmungen |
DE3501077A1 (de) * | 1985-01-15 | 1986-07-17 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Pulsventil |
GB8712951D0 (en) * | 1987-06-03 | 1987-07-08 | Rolls Royce Plc | Valve |
FR2687333A1 (fr) * | 1992-02-14 | 1993-08-20 | Tecnoma | Buse de pulverisation de liquide. |
DE4432177A1 (de) * | 1994-09-09 | 1996-03-14 | Voith Gmbh J M | Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn |
-
1997
- 1997-12-19 FR FR9716553A patent/FR2772646B1/fr not_active Expired - Fee Related
-
1998
- 1998-12-18 DE DE69808434T patent/DE69808434T2/de not_active Expired - Lifetime
- 1998-12-18 WO PCT/FR1998/002775 patent/WO1999032230A1/fr active IP Right Grant
- 1998-12-18 AU AU17658/99A patent/AU1765899A/en not_active Abandoned
- 1998-12-18 AT AT98962503T patent/ATE225207T1/de not_active IP Right Cessation
- 1998-12-18 CA CA002279831A patent/CA2279831A1/fr not_active Abandoned
- 1998-12-18 DK DK98962503T patent/DK0961659T3/da active
- 1998-12-18 NZ NZ337163A patent/NZ337163A/xx unknown
- 1998-12-18 EP EP98962503A patent/EP0961659B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DK0961659T3 (da) | 2003-01-27 |
EP0961659A1 (fr) | 1999-12-08 |
FR2772646B1 (fr) | 2000-02-25 |
AU1765899A (en) | 1999-07-12 |
DE69808434D1 (de) | 2002-11-07 |
NZ337163A (en) | 2000-10-27 |
ATE225207T1 (de) | 2002-10-15 |
CA2279831A1 (fr) | 1999-07-01 |
DE69808434T2 (de) | 2003-06-05 |
WO1999032230A1 (fr) | 1999-07-01 |
FR2772646A1 (fr) | 1999-06-25 |
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