EP0961659B1 - Sprühdüse - Google Patents

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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
Application number
EP98962503A
Other languages
English (en)
French (fr)
Other versions
EP0961659A1 (de
Inventor
Alain Guesdon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuhn SAS
Original Assignee
Kuhn Nodet SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kuhn Nodet SA filed Critical Kuhn Nodet SA
Publication of EP0961659A1 publication Critical patent/EP0961659A1/de
Application granted granted Critical
Publication of EP0961659B1 publication Critical patent/EP0961659B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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, e.g. 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)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Special Spraying Apparatus (AREA)

Claims (19)

  1. Verfahren zur Regelung von Feldspritzdüsen, bei dem man in Abhängigkeit von Behandlungsparametern den Durchsatz eines durch einen Satz von Düsen (1) verteilten Behandlungsmittels steuert, indem man mittels eines Einstellmittels die Austriebsöffnung (1c) der Düsen (1) dimensioniert, um eine gegebene Öffnung oder ein Schließen der Austriebsöffnung (1c) gemäß sich auf von Sensoren oder Anweisungen stammenden Informationen beziehenden Werten zu erhalten, dadurch gekennzeichnet, daß man als Einstellmittel mindestens ein piezoelektrisches Element verwendet.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man auf jede Düse (1) einzeln oder auf eine Auswahl von Düsen (1) einwirkt.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man zur Steuerung der mit den Behandlungsparametern kompatiblen Durchsätze elektronische Mittel oder einen Mikrocomputer verwendet.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß man den Betrieb der Spritze (10) mittels eines Mikrocomputers verwaltet.
  5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß man die mit dem Betrieb der Spritze (10) und/oder der Düsen (1) verbundenen Daten analysiert und in Abhängigkeit von gespeicherten Informationen automatische Korrekturen durchführt.
  6. Verfahren nach irgend einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß man zur Änderung der Form der Strahlen (7) des ausgetriebenen Behandlungsmittels auf die Konfiguration der Austriebsöffnung (1c) einwirkt.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß man den Abstand zwischen den Düsen (1) und dem zu behandelnden Bereich in Abhängigkeit von der Konfiguration der Strahlen (7) anpaßt.
  8. Verfahren nach irgend einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß man zur Steuerung einer gegebenen Öffnung oder des Schließens der Austriebsöffnung (1c) der Düsen (1) elektrische Signale verwendet.
  9. Feldspritzdüse (1), die aus einem Düsenkörper (la) besteht, der mit mindestens einer Eingangsöffnung (1b) und mindestens einer Austriebsöffnung (1c) für ein Behandlungsmittel versehen ist, wobei die Düse (1) Einstellmittel zur Einwirkung auf die Abmessungen der Austriebsöffnung (1c) und somit Änderung der Öffnung der Düse (1) umfaßt, dadurch gekennzeichnet, daß die Einstellmittel mindestens ein piezoelektrisches Element umfassen.
  10. Sprühdüse (1) nach Anspruch 9, dadurch gekennzeichnet, daß die Einstellmittel in dem Düsenkörper (1a) integriert sind.
  11. Sprühdüse (1) nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß sie einer Steuereinheit zugeordnet ist, die elektrische Signale auf die Einstellmittel übertragen soll.
  12. Sprühdüse (1) nach irgend einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß sie aus mindestens einem Verschlußelement (3, 4) besteht, das in dem Düsenkörper (1a) angebracht und unter der Wirkung der Einstellmittel zwischen dem Schließen und kalibrierten Öffnungen der Austriebsöffnung (1c) entsprechenden Stellungen bewegbar ist.
  13. Sprühdüse (1) nach Anspruch 12, dadurch gekennzeichnet, daß sie zwei Verschlußelemente (3) und (4) komplementärer Form aufweist, die so zusammenwirken, daß sie die Austriebsöffnung (1c) definieren und dimensionieren, wobei die Verschlußelemente (3, 4) durch die Einstellmittel betätigt werden.
  14. Sprühdüse nach irgend einem der Ansprüche 9 bis 13, dadurch gekennzeichnet, daß die Einstellmittel zwei piezoelektrische Chips (5, 6) umfassen.
  15. Feldspritzdüse nach irgend einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß sie zumindest an der Grenzfläche des Düsenkörpers (1a) und des (der) Verschlußelements (Verschlußelemente) (3, 4) ein elastisch verformbares Material (2) umfaßt, dessen Elastizität das Aufnehmen der Bewegungen des (der) Verschlußelements (Verschlußelemente) (3, 4) gestattet.
  16. Spritzgestänge (11), das Düsen (1) nach irgend einem der Ansprüche 9 bis 15 aufweist.
  17. Feldspritze (10), die mit Sprühdüsen (1) nach irgend einem der Ansprüche 9 bis 16 versehen ist.
  18. Feldspritze (10), die Sprühdüsen umfaßt, die das Regelungsverfahren nach irgend einem der Ansprüche 1 bis 8 einsetzen.
  19. Steuereinheit für eine Feldspritze (10), die Mittel zur Steuerung der Sprühdüsen (1) gemäß einem Regelungsverfahren nach irgend einem der Ansprüche 1 bis 8 umfassen.
EP98962503A 1997-12-19 1998-12-18 Sprühdüse Expired - Lifetime EP0961659B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9716553 1997-12-19
FR9716553A FR2772646B1 (fr) 1997-12-19 1997-12-19 Buse de pulverisation amelioree
PCT/FR1998/002775 WO1999032230A1 (fr) 1997-12-19 1998-12-18 Buse de pulverisation amelioree

Publications (2)

Publication Number Publication Date
EP0961659A1 EP0961659A1 (de) 1999-12-08
EP0961659B1 true EP0961659B1 (de) 2002-10-02

Family

ID=9515173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98962503A Expired - Lifetime EP0961659B1 (de) 1997-12-19 1998-12-18 Sprühdüse

Country Status (9)

Country Link
EP (1) EP0961659B1 (de)
AT (1) ATE225207T1 (de)
AU (1) AU1765899A (de)
CA (1) CA2279831A1 (de)
DE (1) DE69808434T2 (de)
DK (1) DK0961659T3 (de)
FR (1) FR2772646B1 (de)
NZ (1) NZ337163A (de)
WO (1) WO1999032230A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024192167A1 (en) * 2023-03-13 2024-09-19 Raven Industries, Inc. Modulating nozzle assembly and methods for same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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
US12016326B2 (en) 2017-01-05 2024-06-25 Raven Industries, Inc. Localized product injection system and methods for same
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
AU2021372513A1 (en) * 2020-10-29 2023-06-22 Ogive Technology, Inc. Dynamically controllable spray nozzle, control system, and method

Family Cites Families (7)

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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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024192167A1 (en) * 2023-03-13 2024-09-19 Raven Industries, Inc. Modulating nozzle assembly and methods for same

Also Published As

Publication number Publication date
NZ337163A (en) 2000-10-27
DK0961659T3 (da) 2003-01-27
WO1999032230A1 (fr) 1999-07-01
EP0961659A1 (de) 1999-12-08
FR2772646B1 (fr) 2000-02-25
CA2279831A1 (fr) 1999-07-01
DE69808434T2 (de) 2003-06-05
AU1765899A (en) 1999-07-12
DE69808434D1 (de) 2002-11-07
FR2772646A1 (fr) 1999-06-25
ATE225207T1 (de) 2002-10-15

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