EP0970753B1 - Method for adjusting the pattern of a sprinkler device and sprinkler device - Google Patents

Method for adjusting the pattern of a sprinkler device and sprinkler device Download PDF

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Publication number
EP0970753B1
EP0970753B1 EP99112625A EP99112625A EP0970753B1 EP 0970753 B1 EP0970753 B1 EP 0970753B1 EP 99112625 A EP99112625 A EP 99112625A EP 99112625 A EP99112625 A EP 99112625A EP 0970753 B1 EP0970753 B1 EP 0970753B1
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EP
European Patent Office
Prior art keywords
nozzle
cross
section
outlet
sprinkler
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
EP99112625A
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German (de)
French (fr)
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EP0970753A2 (en
EP0970753A3 (en
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Gardena Manufacturing GmbH
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Gardena Manufacturing GmbH
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Publication date
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Publication of EP0970753A3 publication Critical patent/EP0970753A3/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0409Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements
    • B05B3/0418Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0422Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
    • B05B3/0431Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements the rotative movement of the outlet elements being reversible
    • B05B3/044Tubular elements holding several outlets, e.g. apertured tubes, oscillating about an axis substantially parallel to the tubular element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30Nozzles, 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/528Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles by resilient deformation of the nozzle
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00Fluid sprinkling, spraying, and diffusing
    • Y10S239/01Pattern sprinkler

Definitions

  • the invention relates to a method for adjusting the sprinkler image of a sprinkler, in particular a square sprinkler, and a sprinkler, according to the preamble of claim 1 or 5.
  • a method and such a device is made US 5,323,963 known.
  • Irrigation devices are mainly used in the garden area for area-wide water supply of plant areas, but can also be used for moistening other areas, such as wet sand tennis courts o. The like., Can be used.
  • a generic sprinkler is normally set up stationary, connected to a water supply, and produces a sprinkler image that determines the shape and size of the sprinkled surface as well as the irrigation density. For a variable use of such irrigation devices, it is desirable to be able to adjust the sprinkler image in order to adapt the irrigation device to the intended use.
  • Generic irrigation devices have a to a liquid supply, in particular water supply, connectable nozzle assembly with a plurality of nozzles, each of which has a nozzle inlet facing the liquid supply, which is connected via a nozzle channel to a nozzle outlet spaced from the nozzle inlet.
  • the nozzle arrangement is a one- or multi-dimensional array of nozzles with substantially fixed relative positions. Since a specifiable irrigation area is to be moistened in the case of generic sprinkler devices, spraying of the nozzles is expediently to be avoided since fine water particles can easily be blown by the wind.
  • a nozzle is therefore preferably designed as a single jet nozzle for dispensing a bundled liquid jet.
  • a slider is displaceable inside a nozzle box in the longitudinal direction of the box, whereby the nozzles can be shut down successively from one side.
  • the adjustment possibilities of this quadrangular sprinkler are very limited.
  • the invention has for its object to avoid the disadvantages of the prior art.
  • a permanently functionally reliable irrigation device is to be created with which a variable adjustment of the sprinkler image is possible.
  • the invention proposes a method according to claim 1 and a sprinkler according to claim 5.
  • the liquid flow is adjusted to adjust the sprinkler image in at least one nozzle influenced by the nozzle by a nozzle channel cross-section of the nozzle channel is changed in at least one cross-sectional change portion.
  • sealing problems can be avoided, which arise especially in calcareous water, when form in the area of the nozzle inlets, but in particular associated with the ambient air nozzle outlets, limescale that complicate or prevent complete sealing of a nozzle opening and possibly at certain intervals make descaling of the sprinkler necessary.
  • the cross-sectional change section is located, preferably substantially centrally, between the nozzle inlet and nozzle outlet and, correspondingly, the cross-sectional change in the intermediate region between the nozzle inlet and nozzle outlet is made.
  • the nozzle channel cross section in the region of the nozzle inlet and / or the nozzle outlet remains substantially unchanged, so that there are unchanged geometric conditions at the nozzle both for the inflow of the liquid, and for the outflow or blasting. Nozzle inlet and nozzle outlet can thus be designed for optimum fluid management, without this design being influenced by the adjustment process.
  • the nozzle channel cross section can be changed in stages, i. be reduced or increased.
  • the change is continuous or continuous, whereby the strength of the liquid flow through a nozzle can be sensitively adjusted. Normally, it is so that the nozzle channel cross section is reduced to the liquid-tight shut-off of the nozzle channel or is increased to the predetermined by the nozzle geometry largest passage cross-section.
  • cross-section closure or shut-off members such as slides o.
  • the cross-sectional change section which may be delimited in particular by an elastically flexible wall, is compressed during the adjustment by force acting transversely to the nozzle channel with reduction in cross-section or widening under cross-sectional enlargement.
  • a preferably provided liquid-tight, flexible wall at least in the cross-sectional change section provides without design effort for a liquid-tight nozzle channel, which is open only on inlet and outlet side and in which no lateral fluid losses can occur even at elevated fluid pressure.
  • the cross-sectional change section is compressed symmetrically with respect to the nozzle channel during the adjustment, in particular from two diametrically opposite directions to the nozzle channel, preferably perpendicular to the longitudinal direction of the nozzle channel.
  • a symmetrical compression evenly distributes the mechanical stress to the wall of the cross-sectional change section.
  • a sprinkler suitable in particular for carrying out the method has at least one of a liquid supply connectable nozzle arrangement of the type described and an adjusting device for selectively adjusting the liquid discharge of individual nozzles or nozzle groups of the nozzle assembly. It is characterized in that at least one nozzle has at least one cross-sectional change portion in which the cross-section of the nozzle channel is changeable, and in that the adjusting device has cross-section changing means engaging the cross-sectional change portion. Typically, multiple or all nozzles of the nozzle assembly have one or more such cross-sectional change sections.
  • the nozzles which are preferably designed as single-jet nozzles, are preferably arranged in a regular distribution, wherein preferably adjacent nozzles are arranged at substantially equal distances from each other.
  • the nozzle assembly is a single, especially rectilinear nozzle row.
  • the nozzles are present in a two-dimensional, preferably flat field, for example a double row or multiple row, or in a three-dimensional arrangement.
  • the nozzle arrangement can be movable as a whole, preferably oscillating periodically, for example, around a pendulum axis running parallel to a row of nozzles.
  • the cross-sectional change section of a nozzle may preferably be arranged between the nozzle inlet and the nozzle outlet, in particular approximately midway between the nozzle inlet and the nozzle outlet. This makes it possible to leave the nozzle in the inlet area and outlet area with respect to. Position and / or shape unchanged during the adjustment, whereby the beam direction does not change during the adjustment, but only the intensity of the beam is changed.
  • a first holding device with inlet passage openings formed, for example, by a liquid supply housing of the apparatus.
  • a arranged at a distance to this second holding device which may be formed in particular by a strip-shaped holder, can record in the outlet passage openings the nozzle outlets fixed.
  • the cross-sectional change means in particular the clamping slide, held and possibly guided.
  • a nozzle may have, at least in the area of the cross-sectional change section, a wall of elastically flexible material that is at least partially, preferably completely enclosing, which is compressible by external force, preferably transversely, in particular perpendicular to the course of the nozzle channel, and due to its elasticity without separate return means resets itself when the external force is withdrawn or eliminated.
  • the nozzle On one or both sides of the compressible cross-sectional change section, the nozzle may be substantially rigid and / or possibly made of a different material than in the cross-sectional change section.
  • a particularly expedient, simple construction results when a nozzle has a preferably one-piece nozzle body made of an elastically flexible, in particular rubber-like material, on which the nozzle inlet, the nozzle outlet, the nozzle channel and the cross-sectional change section are formed.
  • the nozzle arrangement has at least one continuous, preferably band-shaped nozzle arrangement body made of elastically flexible material, to which a plurality, preferably all nozzle bodies of the nozzle arrangement are preferably arranged in one piece.
  • the preferably a nozzle row forming nozzle band can be sealed in such a tubular body, for example, the body of the liquid supply can be used, that the nozzle projections protrude through corresponding wall openings of the housing to the outside.
  • the cross-sectional change means may engage.
  • the cross-sectional altering means of a preferred embodiment comprises at least one clamping means for clamping a cross-sectional reduction compressible cross-sectional change portion of a nozzle.
  • a clamping can be achieved for example by pliers or screw-like actuators or by rotating an elastic nozzle around its nozzle axis.
  • a clamping device for a nozzle has at least one, preferably in a clamping direction transversely to the nozzle channel displaceable, clamping slide. This can, for example, press the cross-sectional change portion against a fixed stop and thereby disconnect or pinch.
  • a clamping slide preferably has a clamping opening enclosing the associated cross-sectional change section, through which the nozzle body protrudes and whose inside width changes parallel to the clamping direction such that when the slide moves in the clamping direction the cross-sectional change section, preferably from two diametrically opposite sides, is squeezable.
  • a separate, preferably manually operable cross-sectional change means in particular a clamping slide, is provided for each of the adjustable nozzles, there is the possibility of individual selection of nozzles for blocking or release, whereby the sprinkler image can be adjusted to a great extent individually by the user. It is also possible to combine individual nozzles by a common cross-sectional change means to an adjustable nozzle groups.
  • clamping slide can be arranged so displaceable perpendicular to the row of nozzles that even for closely adjacent nozzles or nozzle groups an individual adjustment is possible.
  • nozzles must be adjustable, but it can, for example, only marginal nozzles or nozzle groups of a row of nozzles be adjustable. For example, can be reduced in total by pinching edge nozzles the wetted area. By clamping individual nozzles in spaced positions, the area flare can be thinned out. If only the reduction of the wetted surface should be of importance, then means for changing the cross section, in particular clamping, can also be provided only at marginal nozzles or nozzle groups.
  • FIG. 1 shows a longitudinal section along a vertical plane through an embodiment of a sprinkler device 1 designed as a square sprinkler.
  • a tubular plastic sprinkler housing 2 (FIG. 3), which is substantially round in cross-section and flattened on its upper side, is rotatably mounted about its longitudinal axis 4 in a base 3, which is easily recognizable in FIG. 2, and via a water-driven drive 5 (not shown) oscillating about the longitudinal axis 4 and reciprocating.
  • the sprinkler 1 can drive side via a threaded coupling 9 and a hose, not shown, or The like can be connected to a pump or directly to the public water network.
  • a nozzle assembly 6 is arranged in the form of a straight row of nozzles with eighteen in the longitudinal direction of the row of nozzles substantially uniformly spaced apart individual nozzles 7.
  • Each of the nozzles 7 is formed as a single jet nozzle for discharging a condensed water jet in a radiation direction 8 indicated by a broken line for some of the nozzles.
  • the quadrangular sprinkler 1 emits a diverging jet fan when water is fed under pressure into the interior of the housing 2 from a liquid supply (not shown), for example the public water network.
  • the nozzles 7 of the nozzle assembly 6 are formed integrally with the band on a continuous, band-shaped nozzle assembly body or nozzle band 10 made of rubber-elastic or similar elastically flexible material.
  • Each of the individual nozzles which are easily recognizable in FIG. 3 and are completely and homogeneously formed from the elastic material, has a nozzle inlet 11 which widens in a funnel shape towards the interior of the sprinkler housing and which narrows in the direction of flow and which points radially inwards around its inner periphery 4 Guide webs 12 for low-turbulence or low-turbulence water supply has.
  • nozzle channel 14 is an approximately centrally disposed between the nozzle inlet and nozzle outlet, then connecting directly to the upper end of the guide webs- Hder section 15 is provided, which is tapered substantially conically to the nozzle outlet inner cross section has, which smoothly merges into an outlet-side outer portion 16 having a substantially cylindrical inner cross-section.
  • the cylindrical inner cross section in the outer region 16 is expediently small in comparison to the length of the nozzle channel and is for example between about 5% and 20 or 30% of its length.
  • the outer contour of the nozzle tapers from the upper portion of the guide webs 12, starting approximately conically with slightly concave inwardly curved outer surfaces to an outlet side, approximately cylindrical outer cross section.
  • This shaping of the nozzle made of elastically flexible, rubbery material conditional that the wall thickness of the nozzle channel 14 surrounding, rotationally symmetrical to the nozzle axis 17 arranged elastically flexible wall in the middle section 15 above the guide webs 12 and below the cylindrical outer portion 16 is thinnest and continuously enlarged towards both open ends.
  • a cross-sectional change section 15 is created in the elongated course of the nozzle channel 14 in the direction of water flow between the nozzle inlet 11 and nozzle outlet 13, in which by force transverse to the longitudinal direction of the nozzle channel a clamping or constriction of the nozzle channel, possibly up to his complete seal, is possible.
  • both the nozzle outlet portion 16 and the nozzle inlet portion 11, both thicker than the cross-sectional change portion 15, remain substantially unchanged in shape.
  • the nozzles are self-retaining in the region of the nozzle inlets 11 from the interior of the sprinkler housing 2 into a series of inlet passage openings 20 on the flattened upper side of the housing 2 by means of barb-like, annular projections 21 and used self-sealing.
  • the position of holding the both outside, and inside substantially cylindrical Düsenauslress Schemee a designed as a straight cover strip 22, on the sprinkler housing 2 releasably secured second holding device is provided for the positionally stable holding in the in Fig. 3 is shown in cross-section of a circle segment with a flat top side, in which a number of outlet through-holes 23 is provided for holding the nozzle outlets fixed in position.
  • Each of the outlet passages 23, of which exactly one is provided for each nozzle, is substantially cylindrical and of diameter matched to the outer diameter of the nozzle outlet portion 16 so as to be held substantially free of play in the associated outlet passageway.
  • the cylinder axes of the guide holes or outlet passage openings 23 are not parallel to each other, but in a plane corresponding to the sectional plane of Fig. 1 tilted against each other such that their the radiation direction of the nozzle 8 determining longitudinal axes fan-like from Diverge housing 2 away.
  • This design allows a particularly simple installation of a sprinkler with fan-like sprinkler image.
  • the nozzles of the nozzle belt 10 may initially be all aligned the same when inserting the nozzle strip in the sprinkler housing, ie their outlet sections 16 may be parallel to each other. Only when installed can be obtained by bending the Düsenauslledgebecke 16 different, fanned beam directions. In the example shown, this is achieved in that the fan-apart diverging guide holes 23 of the cover strip 22 deflect the nozzle outlet 16 in the direction desired in each case.
  • the Outlet passage openings 23 have inwardly facing inlet sides or insertion sections 24, which lie at the same distance along the row of nozzles as the nozzles themselves and the right axial arrangement of the housing 2 and cover strip 22 to each other with the outlet sides 25 of the inlet passage openings 20 are aligned.
  • the cover strip 22 can be placed from above onto the row of nozzles, wherein the nozzles collectively enter the insertion sections 24 and the guide holes 23, respectively, without having to be individually threaded.
  • the central sections 15 of the nozzles are freely accessible from the direction transverse to the nozzle axis 17 , but can not escape laterally when force transverse to the nozzle axis substantially.
  • the liquid delivery of a single nozzle can be adjusted by means of an adjusting device which has cross-sectional change means in the form of a clamping slide 30 acting on the cross-sectional change section 15.
  • cross-sectional change means in the form of a clamping slide 30 acting on the cross-sectional change section 15.
  • FIG. 1 and 2 only three marginal nozzles are shut off by slide 30, while the middle nozzles are always in operation. It can also be provided for other nozzles or nozzle groups, in particular for all nozzles of the sprinkler, such clamping slide or other, in particular equivalent cross-sectional change means.
  • Each of the slides is manually displaceable parallel to a clamping direction 31 which is perpendicular to the longitudinal direction of the nozzle row 6 thereby guided between a pair of guide webs 32, which, as can be seen in Fig. 1, formed integrally with the sprinkler housing 2 and are each arranged between two adjacent inlet passage openings.
  • a slider as shown in Figures 3, 4 and 5, formed in the form of a parallel-sided circular arc section, guided between its associated guide webs 32 and free-play along a circumferential segment of the nozzle box slidably mounted so that a shift in the clamping direction a pivoting of the clamping slide around the central axis 4 of the nozzle box corresponds.
  • Other embodiments are possible, in particular a planar displacement of a clamping slide in a plane perpendicular to the longitudinal direction of the nozzle row and to the nozzle channels 14.
  • the slides are in their end portions on the outside with a convenient cross-ribbing 33 provided by means of which a clamping slide, for example by means of a spread hand by means of thumb and index or middle finger can be sensitively pivoted parallel to the clamping direction or moved.
  • Each of the clamping slide has a drop-shaped clamping opening 34 enclosing the cross-sectional change section 15 of the associated nozzle, whose clear width transversely to the clamping direction or parallel to the axis 4 changes in sections in the clamping direction.
  • the clamping opening has an approximately pear-shaped, wide opening portion 35 whose clear width is substantially as large as or slightly larger than the diameter of the associated nozzle in the region of the cross-sectional change portion 15. If the clamping slide, as shown in Fig.
  • the clamping slide with the wide opening portion 35 are placed over the nozzles between the guide webs 32 and then the cover strip 22 is pushed onto the nozzle outlets and mounted latching on the nozzle box.
  • the clamping slide then protrude through lateral guide openings 39 of the cover strip and are secured by this against falling.
  • the sprinkling device for quadrangular irrigation surfaces which is described and can be assembled very quickly is possible, in which the nozzles are designed as rubber-elastic water supply channels at least in a preferably middle section between the nozzle inlet 11 and the nozzle outlet 13, which are clamped by force transversely to the water flow direction can be without the nozzle inlet and / or the nozzle outlet must be sealed by separate locking devices.
  • Nozzle inlet and nozzle outlet can be optimally designed for their function and retain their shape and function even during the Abklemmvorganges, in which the flow area of the nozzle can be continuously reduced to zero, if necessary.
  • the adjustability of the sprinkler image irrigation device according to the invention is not affected in particular by calcification of nozzles, because the used for the shut-off middle section 15 of the nozzle is a little calcification prone because it is at least less exposed to the ambient air than the area of the Nozzle outlet, and because, on the other hand, at each Abklemmvorgang abaftenden deposits from the compressed wall and can be rinsed out of the nozzle. It is created a permanently functioning irrigation device whose sprinkler image is very variable adjustable.
  • the invention has been explained using the example of a square sprinkler. However, it can be used with appropriate design of the interacting elements, even with round sprinklers and sprinklers for differently shaped sprinkling surfaces.

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  • Catching Or Destruction (AREA)

Abstract

A lawn sprinkler has a horizontal duct (2) which sweeps to either side in a reciprocal action and which has a number of water jets. The jets are made of elastic material and are clipped into the duct. A slider (30) fitted over each jet has a profiled slot to grip the jet and to vary the flow diameter of the jet between fully to fully closed. This enables the operator to vary the sprinkler rate in a continuous manner between fully on to fully off.

Description

Die Erfindung betrifft ein Verfahren zur Verstellung des Regnerbildes einer Beregnungsvorrichtung, insbesondere eines Viereckregners, sowie eine Beregnungsvorrichtung, gemäß dem Oberbegriff des Anspruchs 1 bzw. 5. Ein derartiges Verfahren bzw. eine derartige Vorrichtung ist aus US 5 323 963 bekannt.The invention relates to a method for adjusting the sprinkler image of a sprinkler, in particular a square sprinkler, and a sprinkler, according to the preamble of claim 1 or 5. Such a method and such a device is made US 5,323,963 known.

Beregnungsvorrichtungen werden vorwiegend im Gartenbereich zur flächendeckenden Wasserversorgung von Pflanzenflächen eingesetzt, können aber auch zur Befeuchtung anderer Flächen, wie beispielsweise feucht zu haltender Sand-Tennisplätze o. dgl., verwendet werden. Eine gattungsgemäße Beregnungsvorrichtung wird normalerweise ortsfest aufgestellt, an eine Wasserversorgung angeschlossen und erzeugt ein Regnerbild, das die Form und Größe der beregneten Fläche sowie die Beregnungsdichte bestimmt. Für einen variablen Einsatz derartiger Beregnungsvorrichtungen ist es erwünscht, das Regnerbild verstellen zu können, um die Beregnungsvorrichtung an den vorgesehenen Einsatz anzupassen.Irrigation devices are mainly used in the garden area for area-wide water supply of plant areas, but can also be used for moistening other areas, such as wet sand tennis courts o. The like., Can be used. A generic sprinkler is normally set up stationary, connected to a water supply, and produces a sprinkler image that determines the shape and size of the sprinkled surface as well as the irrigation density. For a variable use of such irrigation devices, it is desirable to be able to adjust the sprinkler image in order to adapt the irrigation device to the intended use.

Gattungsgemäße Beregnungsvorrichtungen haben eine an eine Flüssigkeitsversorgung, insbesondere Wasserversorgung, anschließbare Düsenanordnung mit einer Vielzahl von Düsen, von denen jede einen der Flüssigkeitsversorgung zugewandten Düseneinlaß hat, der über einen Düsenkanal mit einem vom Düseneinlaß beabstandeten Düsenauslaß verbunden ist. Als Düsenanordnung wird ein ein- oder mehrdimensionales Feld von Düsen mit im wesentlichen fest vorgegebenen relativen Positionen bezeichnet. Da bei gattungsgemäßen Beregnungsvorrichtugen ein vorgebbarer Beregnungsbereich befeuchtet werden soll, ist zweckmäßig eine Sprühnebelbildung bei den Düsen zu vermeiden, da feine Wasserpartikel vom Wind leicht verweht werden können. Eine Düse ist daher vorzugsweise als Einzelstrahldüse zur Abgabe eines gebündelten Flüssigkeitsstrahls ausgebildet.Generic irrigation devices have a to a liquid supply, in particular water supply, connectable nozzle assembly with a plurality of nozzles, each of which has a nozzle inlet facing the liquid supply, which is connected via a nozzle channel to a nozzle outlet spaced from the nozzle inlet. The nozzle arrangement is a one- or multi-dimensional array of nozzles with substantially fixed relative positions. Since a specifiable irrigation area is to be moistened in the case of generic sprinkler devices, spraying of the nozzles is expediently to be avoided since fine water particles can easily be blown by the wind. A nozzle is therefore preferably designed as a single jet nozzle for dispensing a bundled liquid jet.

Zur Verstellung des Regnerbildes von sogenannten Viereckregnern mit einer Mehrzahl getrennter Düsen ist es bekannt, entweder die Düseneinlässe von der Flüssigkeitszufuhr abzutrennen oder die Düsenauslässe abzudichten, wobei von den Abdichtungsmaßnahmen einzelne Düsen oder auch Düsengruppen erfaßt sein können.For adjusting the sprinkler image of so-called square sprinklers with a plurality of separate nozzles, it is known either to separate the nozzle inlets from the liquid supply or to seal the nozzle outlets, whereby individual nozzles or even nozzle groups can be detected by the sealing measures.

Bei einem in der deutschen Patentschrift 1 926 735 beschriebenen Viereckregner ist im Inneren eines Düsenkastens eine Hülse mit verschiedenen Durchbrechungen drehbar gelagert, über die jeweils die am Düsenkasten vorgesehenen Düseneinlässe gruppenweise gesperrt bzw. freigegeben werden können. Die Anordnung eines Abdichtmechanismus im Inneren des Düsenkastens ist konstruktiv aufwendig. Es ist nur eine begrenzte Anzahl verschiedener Regnerbilder einstellbar, die durch die Verteilung der Durchbrechungen in der Hülse vorgegeben sind.At one in the German Patent 1,926,735 described quadrangular sprinkler is rotatably mounted in the interior of a nozzle box, a sleeve with different openings through which each of the nozzle box provided nozzle inlets can be blocked in groups or released. The arrangement of a sealing mechanism in the interior of the nozzle box is structurally complex. There are only a limited number of different sprinkler images adjustable, which are determined by the distribution of the openings in the sleeve.

Bei dem aus der europäischen Patentschrift 0 713 426 bekannten Viereckregner ist im Inneren eines Düsenkastens eine Anordnung mit Nockenwelle und jeweils den Düsen zugeordneten Kipphebeln vorgesehen. Die Kipphebel werden über die Nockenwelle so bewegt, daß einzelne Düseneinlässe gesperrt bzw. abgedichtet oder freigegeben werden. Auch hier ist eine Verstellung nur im Rahmen der vorgegebenen Nockenwellengestaltung möglich. Der Versperrmechanismus ist aufwendig und entsprechend störanfällig.In the from the European Patent 0 713 426 Known square sprinkler is provided in the interior of a nozzle box an arrangement with camshaft and each of the nozzles associated rocker arms. The rocker arms are over the camshaft moved so that individual nozzle inlets are blocked or sealed or released. Again, an adjustment is possible only in the context of the given camshaft design. The lock mechanism is complex and prone to failure.

Bei einem in der DE 31 19 094 beschriebenen Viereckregner ist ein Schieber im Inneren eines Düsenkastens in Längsrichtung des Kastens verschiebbar, wodurch die Düsen von einer Seite her nacheinander stillgelegt werden können. Die Verstellmöglichkeiten dieses Viereckregners sind sehr eingeschränkt.At one in the DE 31 19 094 As described, a slider is displaceable inside a nozzle box in the longitudinal direction of the box, whereby the nozzles can be shut down successively from one side. The adjustment possibilities of this quadrangular sprinkler are very limited.

Bei dem in der US-Patentschrift 3 423 024 gezeigten Viereckregner können einzelne Düsen durch Abdecken der Düsenauslässe abgestellt werden. Zur Abdeckung sind ringförmige Abdeckelemente vorgesehen, die auf die Außenseite des rohrförmigen Düsenkastens aufgeschnappt und bei Bedarf über den jeweiligen, zu verschließenden Düsenauslaß geschoben werden. Bei diesem Viereckregner kann es, insbesondere bei kalkhaltigem Wasser, zu Abdichtproblemen kommen, die die Verstellbarkeit des Regnerbildes beeinträchtigen.In the in the U.S. Patent 3,423,024 shown square sprinklers, individual nozzles can be turned off by covering the nozzle outlets. To cover annular cover elements are provided, which are snapped onto the outside of the tubular nozzle box and pushed as needed over the respective, to be closed nozzle outlet. In this square sprinkler, it can, especially in calcareous water, come to Abdichtproblemen that affect the adjustability of the sprinkler image.

Der Erfindung liegt die Aufgabe zugrunde, die Nachteile des Standes der Technik zu vermeiden. Insbesondere soll eine dauerhaft funktionssichere Beregnungsvorrichtung geschaffen werden, mit der eine variable Einstellung des Regnerbildes möglich ist.The invention has for its object to avoid the disadvantages of the prior art. In particular, a permanently functionally reliable irrigation device is to be created with which a variable adjustment of the sprinkler image is possible.

Zur Lösung dieser Aufgabe schlägt die Erfindung ein Verfahren gemäß Anspruch 1 und eine Beregnungsvorrichtung gemäß Anspruch 5 vor.To solve this problem, the invention proposes a method according to claim 1 and a sprinkler according to claim 5.

Bei dem erfindungsgemäßen Verfahren wird zur Verstellung des Regnerbildes bei mindestens einer Düse der Flüssigkeitsstrom durch die Düse beeinflußt, indem ein Düsenkanalquerschnitt des Düsenkanals in mindestens einem Querschnittsänderungsabschnitt verändert wird. Während im Stand der Technik externe Verschlußeinrichtungen für Düseneinlaß oder Düsenauslaß einer in sich unveränderten Düse mit unveränderlicher Düsenkanalgeometrie vorgesehen sind, werden nach der Erfindung an der Düse selbst im Bereich ihres Düsenkanals Veränderungen vorgenommen, die den Flüssigkeitsstrom durch die Düse beeinflussen. Hierdurch werden ggf. konstruktiv aufwendige externe Abdichteinrichtungen entbehrlich. Zudem können Abdichtprobleme vermieden werden, die sich insbesondere bei kalkhaltigem Wasser ergeben, wenn sich im Bereich der Düseneinlässe, insbesondere aber der mit der Umgebungsluft in Verbindung stehenden Düsenauslässe, Kalkablagerungen bilden, die eine vollständige Abdichtung einer Düsenöffnung erschweren oder verhindern und ggf. in gewissen Zeitabständen eine Entkalkung der Beregnungsvorrichtung notwendig machen.In the method according to the invention, the liquid flow is adjusted to adjust the sprinkler image in at least one nozzle influenced by the nozzle by a nozzle channel cross-section of the nozzle channel is changed in at least one cross-sectional change portion. While in the prior art external closure means for nozzle inlet or nozzle outlet of an inherently unchanged nozzle with fixed nozzle channel geometry are provided according to the invention, changes are made to the nozzle itself in the region of its nozzle channel, which influence the flow of liquid through the nozzle. As a result, optionally structurally complex external sealing devices are unnecessary. In addition, sealing problems can be avoided, which arise especially in calcareous water, when form in the area of the nozzle inlets, but in particular associated with the ambient air nozzle outlets, limescale that complicate or prevent complete sealing of a nozzle opening and possibly at certain intervals make descaling of the sprinkler necessary.

Obwohl es möglich ist, daß die Veränderung des Düsenkanalquerschnitts im Bereich des Düsenauslasses und/oder des Düseneinlasses vorgenommen wird, ist es bevorzugt, wenn der Querschnittsveränderungabschnitt, vorzugsweise im wesentlichen mittig, zwischen Düseneinlaß und Düsenauslaß liegt und entsprechend die Querschnittsänderung im Zwischenbereich zwischen Düseneinlaß und Düsenauslaß vorgenommen wird. Vorzugsweise bleibt dabei der Düsenkanalquerschnitt im Bereich des Düseneinlasses und/oder des Düsenauslasses im wesentlichen unverändert, so daß sowohl für das Einströmen der Flüssigkeit, als auch für das Abströmen bzw. Abstrahlen unveränderte geometrische Bedingungen an der Düse vorliegen. Düseneinlaß und Düsenauslaß können also für optimale Flüssigkeitsführung gestaltet sein, ohne daß diese Gestaltung durch den Verstellvorgang beeinflußt wird.Although it is possible for the variation of the nozzle channel cross-section to be made in the region of the nozzle outlet and / or the nozzle inlet, it is preferred that the cross-sectional change section is located, preferably substantially centrally, between the nozzle inlet and nozzle outlet and, correspondingly, the cross-sectional change in the intermediate region between the nozzle inlet and nozzle outlet is made. Preferably, the nozzle channel cross section in the region of the nozzle inlet and / or the nozzle outlet remains substantially unchanged, so that there are unchanged geometric conditions at the nozzle both for the inflow of the liquid, and for the outflow or blasting. Nozzle inlet and nozzle outlet can thus be designed for optimum fluid management, without this design being influenced by the adjustment process.

Der Düsenkanalquerschnitt kann in Stufen verändert, d.h. verringert oder vergrößert werden. Vorzugsweise erfolgt die Veränderung stufenlos bzw. kontinuierlich, wodurch die Stärke des Flüssigkeitsstroms durch eine Düse feinfühlig eingestellt werden kann. Normalerweise ist es so, daß der Düsenkanalquerschnitt bis zur flüssigkeitsdichten Absperrung des Düsenkanals verringert wird bzw. bis auf den durch die Düsengeometrie vorgegebenen größten Durchlaßquerschnitt vergrößert wird.The nozzle channel cross section can be changed in stages, i. be reduced or increased. Preferably, the change is continuous or continuous, whereby the strength of the liquid flow through a nozzle can be sensitively adjusted. Normally, it is so that the nozzle channel cross section is reduced to the liquid-tight shut-off of the nozzle channel or is increased to the predetermined by the nozzle geometry largest passage cross-section.

Zur Veränderung des Düsenkanalquerschnitts können Verschluß- bzw. Absperrglieder wie Schieber o. dgl. vorgesehen sein, die durch seitliche Öffnungen des Düsenkanales in diesen einführbar sein können. Bevorzugt ist es, wenn der Querschnittsänderungsabschnitt, der insbesondere durch eine elastisch flexible Wandung begrenzt sein kann, bei der Verstellung durch Krafteinwirkung quer zum Düsenkanal unter Querschnittsverringerung zusammengedrückt wird bzw. sich unter Querschnittsvergrößerung aufweitet. Eine vorzugsweise vorgesehene flüssigkeitsdichte, flexible Wandung zumindest im Querschnittsänderungsabschnitt sorgt ohne konstruktiven Aufwand für einen flüssigkeitsdichten Düsenkanal, der nur einlaß- und auslaßseitig offen ist und bei dem auch bei erhöhtem Flüssigkeitsdruck keine seitlichen Flüssigkeitsverluste auftreten können. Bevorzugt ist es, wenn der Querschnittsänderungsabschnitt bei der Verstellung symmetrisch zum Düsenkanal, insbesondere aus zwei diametral zum Düsenkanal gegenüberliegenden Richtungen, vorzugsweise senkrecht zur Längsrichtung des Düsenkanals, zusammengedrückt wird. Ein symmetrisches Zusammendrücken verteilt die mechanische Belastung gleichmäßig auf die Wandung des Querschnittsveränderungsabschnitts.To change the nozzle channel cross-section closure or shut-off members such as slides o. The like. Be provided, which can be inserted through lateral openings of the nozzle channel in this. It is preferred if the cross-sectional change section, which may be delimited in particular by an elastically flexible wall, is compressed during the adjustment by force acting transversely to the nozzle channel with reduction in cross-section or widening under cross-sectional enlargement. A preferably provided liquid-tight, flexible wall at least in the cross-sectional change section provides without design effort for a liquid-tight nozzle channel, which is open only on inlet and outlet side and in which no lateral fluid losses can occur even at elevated fluid pressure. It is preferred if the cross-sectional change section is compressed symmetrically with respect to the nozzle channel during the adjustment, in particular from two diametrically opposite directions to the nozzle channel, preferably perpendicular to the longitudinal direction of the nozzle channel. A symmetrical compression evenly distributes the mechanical stress to the wall of the cross-sectional change section.

Eine insbesondere zur Durchführung des Verfahrens geeignete Beregnungsvorrichtung hat mindestens eine an eine Flüssigkeitsversorgung anschließbare Düsenanordnung der beschriebenen Art und eine Verstelleinrichtung zur wahlweisen Einstellung der Flüssigkeitsabgabe einzelner Düsen oder Düsengruppen der Düsenanordnung. Sie ist dadurch gekennzeichnet, daß mindestens eine Düse mindestens einen Querschnittsänderungsabschnitt hat, in dem der Querschnitt des Düsenkanals veränderbar ist, und daß die Verstelleinrichtung an dem Querschnittsänderungsabschnitt angreifende Querschnittsänderungsmittel aufweist. Normalerweise haben mehrere oder alle Düsen der Düsenanordnung einen oder mehrere solcher Querschnittsänderungsabschnitte.A sprinkler suitable in particular for carrying out the method has at least one of a liquid supply connectable nozzle arrangement of the type described and an adjusting device for selectively adjusting the liquid discharge of individual nozzles or nozzle groups of the nozzle assembly. It is characterized in that at least one nozzle has at least one cross-sectional change portion in which the cross-section of the nozzle channel is changeable, and in that the adjusting device has cross-section changing means engaging the cross-sectional change portion. Typically, multiple or all nozzles of the nozzle assembly have one or more such cross-sectional change sections.

Bei der Düsenanordnung sind die vorzugsweise als Einzelstrahldüsen ausgebildeten Düsen bevorzugt in einer regelmäßigen Verteilung angeordnet, wobei vorzugsweise benachbarte Düsen in im wesentlichen gleichen Abständen zueinander angeordnet sind. Vorzugsweise ist die Düsenanordnung eine einzige, insbesondere geradlinige Düsenreihe. Es ist auch möglich, daß die Düsen in einem zweidimensionalem, vorzugsweise ebenen Feld, beispielsweise einer Doppelreihe oder Mehrfachreihe, oder in einer dreidimensionalen Anordnung vorliegen. Die Düsenanordnung kann als Ganzes bewegbar, vorzugsweise periodisch pendelnd bewegbar sein, beispielsweise um eine parallel zu einer Düsenreihe verlaufende Pendelachse.In the case of the nozzle arrangement, the nozzles, which are preferably designed as single-jet nozzles, are preferably arranged in a regular distribution, wherein preferably adjacent nozzles are arranged at substantially equal distances from each other. Preferably, the nozzle assembly is a single, especially rectilinear nozzle row. It is also possible that the nozzles are present in a two-dimensional, preferably flat field, for example a double row or multiple row, or in a three-dimensional arrangement. The nozzle arrangement can be movable as a whole, preferably oscillating periodically, for example, around a pendulum axis running parallel to a row of nozzles.

Der Querschnittsänderungsabschnitt einer Düse kann bevorzugt zwischen Düseneinlaß und Düsenauslaß angeordnet sein, insbesondere etwa mittig zwischen Düseneinlaß und Düsenauslaß. Dadurch ist es möglich, die Düse im Einlaßbereich und Auslaßbereich bzgl. Lage und/oder Form auch bei der Verstellung unverändert zu lassen, wodurch sich die Strahlrichtung beim Verstellvorgang nicht ändert, sondern lediglich die Intensität des Strahls verändert wird.The cross-sectional change section of a nozzle may preferably be arranged between the nozzle inlet and the nozzle outlet, in particular approximately midway between the nozzle inlet and the nozzle outlet. This makes it possible to leave the nozzle in the inlet area and outlet area with respect to. Position and / or shape unchanged during the adjustment, whereby the beam direction does not change during the adjustment, but only the intensity of the beam is changed.

Zum lagefesten Halten der Düseneinlässe kann eine beispielsweise durch ein Flüssigkeitszufuhrgehäuse der Vorrichtung gebildete erste Halteeinrichtung mit Einlaß-Durchgangsöffnungen vorgesehen sein. Eine in einem Abstand zu dieser angeordnete zweite Halteeinrichtung, die inbesondere durch einen leistenförmigen Halter gebildet sein kann, kann in Auslaß-Durchgangsöffnungen die Düsenauslässe lagefest aufnehmen. Zwischen den aneinander vorzugsweise lösbar befestigbaren Halteeinrichtungen können die Querschnittsänderungsmittel, insbesondere die Klemmschieber, gehalten und ggf. geführt sein. Derartige Ausführungen sind leicht zusammenbaubar und sehr funktionssicher.For holding the nozzle inlets in a fixed position, it is possible to provide a first holding device with inlet passage openings formed, for example, by a liquid supply housing of the apparatus. A arranged at a distance to this second holding device, which may be formed in particular by a strip-shaped holder, can record in the outlet passage openings the nozzle outlets fixed. Between the mutually preferably releasably securable holding means, the cross-sectional change means, in particular the clamping slide, held and possibly guided. Such designs are easy to assemble and very reliable.

Eine Düse kann zumindest im Bereich des Querschnittsänderungsabschnittes eine den Düsenkanal mindestens teilweise, vorzugsweise vollständig umschließende Wandung aus elastisch flexiblem Material haben, die durch Krafteinwirkung von außen, vorzugsweise quer, insbesondere senkrecht zum Verlauf des Düsenkanals, zusammendrückbar ist und sich aufgrund ihrer Elastizität ohne gesonderte Rückholmittel von selbst rückstellt, wenn die äußere Krafteinwirkung zurückgenommen oder beseitigt wird.A nozzle may have, at least in the area of the cross-sectional change section, a wall of elastically flexible material that is at least partially, preferably completely enclosing, which is compressible by external force, preferably transversely, in particular perpendicular to the course of the nozzle channel, and due to its elasticity without separate return means resets itself when the external force is withdrawn or eliminated.

Einseitig oder beidseitig des zusammendrückbaren Querschnittsänderungsabschnitts kann die Düse im wesentlichen starr sein und/oder ggf. aus einem anderen Material bestehen als im Querschnittsänderungsabschnitt. Ein besonders zweckmäßiger, einfacher Aufbau ergibt sich, wenn eine Düse einen vorzugsweise einstückigen Düsenkörper aus einem elastisch flexiblen, insbesondere gummiartigem Material hat, an dem der Düseneinlaß, der Düsenauslaß, der Düsenkanal und der Querschnittsänderungsabschnitt ausgebildet sind.On one or both sides of the compressible cross-sectional change section, the nozzle may be substantially rigid and / or possibly made of a different material than in the cross-sectional change section. A particularly expedient, simple construction results when a nozzle has a preferably one-piece nozzle body made of an elastically flexible, in particular rubber-like material, on which the nozzle inlet, the nozzle outlet, the nozzle channel and the cross-sectional change section are formed.

Obwohl für jede Düse ein gesonderter, elastischer Düsenkörper vorgesehen sein kann, ist es bevorzugt, wenn die Düsenanordnung mindestens einen zusammenhängenden, vorzugsweise bandförmigen Düsenanordnungskörper aus elastisch flexiblem Material aufweist, an den mehrere, vorzugsweise alle Düsenkörper der Düsenanordnung, vorzugsweise einstückig, angeordnet sind. Das bevorzugt eine Düsenreihe bildende Düsenband kann derart abgedichtet in einen beispielsweise rohrförmigen Gehäusekörper der Flüssigkeitszuführung eingesetzt werden, daß die Düsenansätze durch entsprechende Wandöffnungen des Gehäuses nach außen ragen. An den nach außen ragenden Abschnitten können die Querschnittsänderungsmittel angreifen. Eine bevorzugte Formgebung der Düsen wird im Zusammenhang mit einer in den Zeichnungen gezeigten Ausführungsform beschrieben werden.Although a separate, elastic nozzle body can be provided for each nozzle, it is preferred if the nozzle arrangement has at least one continuous, preferably band-shaped nozzle arrangement body made of elastically flexible material, to which a plurality, preferably all nozzle bodies of the nozzle arrangement are preferably arranged in one piece. The preferably a nozzle row forming nozzle band can be sealed in such a tubular body, for example, the body of the liquid supply can be used, that the nozzle projections protrude through corresponding wall openings of the housing to the outside. At the outwardly projecting portions, the cross-sectional change means may engage. A preferred shape of the nozzles will be described in connection with an embodiment shown in the drawings.

Die Querschnittsänderungsmittel einer bevorzugten Ausführungsform umfassen mindestens eine Abklemmeinrichtung zur Abklemmung eines unter Querschnittsverringerung zusammendrückbaren Querschnittsänderungsabschnitts einer Düse. Eine Abklemmung kann beispielsweise durch zangenartige oder schraubenartige Betätigungselemente oder durch Verdrehen einer elastischen Düse um ihre Düsenachse erreicht werden. Bei einer bevorzugten Ausführungsform hat eine Abklemmeinrichtung für eine Düse mindestens einen, vorzugsweise in einer Klemmrichtung quer zum Düsenkanal verschiebbaren, Klemmschieber. Dieser kann beispielsweise den Querschnittsänderungsabschnitt gegen einen ortsfesten Anschlag drücken und ihn dadurch abklemmen oder abschnüren. Vorzugsweise hat ein Klemmschieber eine den zugeordneten Querschnittsänderungsabschnitt einschließende Klemmöffnung, durch die der Düsenkörper hindurchragt und deren lichte Weite sich parallel zur Klemmrichtung so verändert, daß bei Bewegung des Schiebers in Klemmrichtung der Querschnittsänderungsabschnitt, vorzugsweise von zwei diametral gegenüberliegenden Seiten, zusammendrückbar ist.The cross-sectional altering means of a preferred embodiment comprises at least one clamping means for clamping a cross-sectional reduction compressible cross-sectional change portion of a nozzle. A clamping can be achieved for example by pliers or screw-like actuators or by rotating an elastic nozzle around its nozzle axis. In a preferred embodiment, a clamping device for a nozzle has at least one, preferably in a clamping direction transversely to the nozzle channel displaceable, clamping slide. This can, for example, press the cross-sectional change portion against a fixed stop and thereby disconnect or pinch. A clamping slide preferably has a clamping opening enclosing the associated cross-sectional change section, through which the nozzle body protrudes and whose inside width changes parallel to the clamping direction such that when the slide moves in the clamping direction the cross-sectional change section, preferably from two diametrically opposite sides, is squeezable.

Wenn für jede der verstellbaren Düsen ein gesondertes, vorzugsweise manuell betätigbares Querschnittsänderungsmittel, insbesondere ein Klemmschieber, vorgesehen ist, so ist die Möglichkeit der einzelnen Auswahl von Düsen zur Absperrung bzw. Freigabe gegeben, wodurch das Regnerbild in hohem Maße individuell vom Benutzer eingestellt werden kann. Es ist auch möglich, einzelne Düsen durch ein gemeinsames Querschnittsänderungsmittel zu einer verstellbaren Düsengruppen zusammenzufassen. Insbesondere können Klemmschieber derart senkrecht zur Düsenreihe verschiebbar angeordnet sein, daß auch für eng benachbarte Düsen oder Düsengruppen eine individuelle Einstellung möglich ist.If a separate, preferably manually operable cross-sectional change means, in particular a clamping slide, is provided for each of the adjustable nozzles, there is the possibility of individual selection of nozzles for blocking or release, whereby the sprinkler image can be adjusted to a great extent individually by the user. It is also possible to combine individual nozzles by a common cross-sectional change means to an adjustable nozzle groups. In particular, clamping slide can be arranged so displaceable perpendicular to the row of nozzles that even for closely adjacent nozzles or nozzle groups an individual adjustment is possible.

Es müssen nicht alle Düsen verstellbar sein, sondern es können beispielsweise nur randständige Düsen oder Düsengruppen einer Düsenreihe verstellbar sein. Beispielsweise kann durch Abklemmen von randständigen Düsen die beregnete Fläche insgesamt verkleinert werden. Durch Abklemmen einzelner Düsen in beabstandeten Positionen kann die Flächenberegnung ausgedünnt werden. Wenn lediglich die Verkleinerung der beregneten Fläche von Bedeutung sein soll, so können Mittel zur Querschnittsänderung, insbesondere Abklemmung, auch lediglich an randständigen Düsen oder Düsengruppen vorgesehen sein.Not all nozzles must be adjustable, but it can, for example, only marginal nozzles or nozzle groups of a row of nozzles be adjustable. For example, can be reduced in total by pinching edge nozzles the wetted area. By clamping individual nozzles in spaced positions, the area flare can be thinned out. If only the reduction of the wetted surface should be of importance, then means for changing the cross section, in particular clamping, can also be provided only at marginal nozzles or nozzle groups.

Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte Ausführungen darstellen können.These and other features will become apparent from the claims and from the description and drawings, wherein the individual features may be realized alone or in each case in the form of sub-combinations in one embodiment of the invention and in other areas and may represent advantageous embodiments.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher erläutert. In den Zeichnungen zeigen:

Fig. 1
einen Längsschnitt in einer vertikalen Ebene durch eine Ausführungsform einer erfindungsgemäßen Beregnungsvorrichtung,
Fig. 2
eine Draufsicht auf ein Regnergehäuse der in Fig. 1 gezeigten Art, das in einem Standfuß der Beregnungsvorrichtung um seine Längsachse verschwenkbar gelagert ist,
Fig. 3
einen Querschnitt durch eine Beregnungsvorrichtung senkrecht zur Längsachse des Regnergehäuses,
Fig. 4
eine Draufsicht auf einen Klemmschieber einer Ausführungsform der Erfindung und
Fig. 5
einen Schnitt durch einen Klemmschieber entlang der Linie V-V in Fig. 4.
An embodiment of the invention is illustrated in the drawings and will be explained in more detail below. In the drawings show:
Fig. 1
a longitudinal section in a vertical plane through an embodiment of a sprinkler according to the invention,
Fig. 2
1 a top view of a sprinkler housing of the type shown in FIG. 1, which is mounted so as to be pivotable about its longitudinal axis in a base of the sprinkler device;
Fig. 3
a cross section through a sprinkler perpendicular to the longitudinal axis of the sprinkler housing,
Fig. 4
a plan view of a clamping slide of an embodiment of the invention and
Fig. 5
a section through a clamping slide along the line VV in Fig. 4th

In Fig. 1 ist ein Längsschnitt entlang einer vertikalen Ebene durch eine Ausführungsform einer als Viereckregner ausgebildeten Beregnungsvorrichtung 1 gezeigt. Ein im Querschnitt im wesentlichen rundes, an seiner Oberseite abgeflachtes, rohrförmiges Kunststoff-Regnergehäuse 2 (Fig. 3) ist in einem in Fig. 2 gut zu erkennenden Standfuß 3 um seine Längsachse 4 drehbar gelagert und über einen nicht näher gezeigten, wasserbetriebenen Antrieb 5 um die Längsachse 4 pendelnd hin- und herbewegbar. Der Regner 1 kann antriebsseitig über eine Schraubkupplung 9 und einen nicht gezeigten Schlauch oder dergleichen an eine Pumpe oder direkt an das öffentliche Wassernetz angeschlossen werden.FIG. 1 shows a longitudinal section along a vertical plane through an embodiment of a sprinkler device 1 designed as a square sprinkler. A tubular plastic sprinkler housing 2 (FIG. 3), which is substantially round in cross-section and flattened on its upper side, is rotatably mounted about its longitudinal axis 4 in a base 3, which is easily recognizable in FIG. 2, and via a water-driven drive 5 (not shown) oscillating about the longitudinal axis 4 and reciprocating. The sprinkler 1 can drive side via a threaded coupling 9 and a hose, not shown, or The like can be connected to a pump or directly to the public water network.

An der Oberseite des auch als Düsenkasten bezeichneten Regnergehäuses 2 ist eine Düsenanordnung 6 in Form einer geraden Düsenreihe mit achtzehn in Längsrichtung der Düsenreihe im wesentlichen gleichmäßig voneinander beabstandeten Einzeldüsen 7 angeordnet. Jede der Düsen 7 ist als Einzelstrahldüse zur Abgabe eines gebündelten Wasserstrahls in einer für einige der Düsen durch eine gestrichelte Linie gekennzeichneten Abstrahlrichtung 8 ausgebildet. Entsprechend der fächerartigen, relativen Verkippung benachbarter Abstrahlrichtungen zueinander gibt der Viereckregner 1 einen divergierenden Strahlfächer ab, wenn von einer nicht gezeigten Flüssigkeitsversorgung, beispielsweise dem öffentlichen Wassernetz, Wasser unter Druck in das Innere des Gehäuses 2 geleitet wird.At the top of the designated as a nozzle box sprinkler housing 2, a nozzle assembly 6 is arranged in the form of a straight row of nozzles with eighteen in the longitudinal direction of the row of nozzles substantially uniformly spaced apart individual nozzles 7. Each of the nozzles 7 is formed as a single jet nozzle for discharging a condensed water jet in a radiation direction 8 indicated by a broken line for some of the nozzles. Corresponding to the fan-like, relative tilting of adjacent emission directions to each other, the quadrangular sprinkler 1 emits a diverging jet fan when water is fed under pressure into the interior of the housing 2 from a liquid supply (not shown), for example the public water network.

Die Düsen 7 der Düsenanordnung 6 sind an einem zusammenhängenden, bandförmigen Düsenanordnungskörper oder Düsenband 10 aus gummielastischem oder ähnlich elastisch flexiblem Material einstückig mit dem Band ausgebildet. Jede der besonders in Fig. 3 gut zu erkennenden, vollständig und homogen aus dem elastischen Material gebildeten Einzeldüsen hat einen zum Inneren des Regnergehäuses sich trichterförmig aufweitenden bzw. sich in Flußrichtung verengenden Düseneinlaß 11, der um seinen inneren Umfang 4 nach radial innen weisende, axiale Führungsstege 12 zur wirbelarmen bzw. turbulenzarmen Wasserführung hat. Im weiteren Verlauf des sich zwischen Düseneinlaß 11 und Düsenauslaß 13 erstreckenden Düsenkanals 14 ist ein etwa mittig zwischen Düseneinlaß und Düsenauslaß angeordneter, direkt an das obere Ende der Führungsstege anschlie-ßender Abschnitt 15 vorgesehen, der einen sich im wesentlichen konisch zum Düsenauslaß verjüngenden Innenquerschnitt hat, der in einen auslaßseitigen Außenabschnitt 16 mit im wesentlichen zylindrischen Innenquerschnitt sanft übergeht. Der zylindrische Innenquerschnitt im Außenbereich 16 ist zweckmäßig klein im Vergleich zur Länge des Düsenkanals und beträgt beispielsweise zwischen ca. 5 % und 20 oder 30 % von dessen Länge. Die äußere Kontur der Düse verjüngt sich vom oberen Abschnitt der Führungsstege 12 ausgehend etwa konisch mit geringfügig konkav nach innen gewölbten Außenflächen bis zu einem auslaßseitigen, etwa zylindrischen Außenquerschnitt. Diese Formgebung der aus elastisch flexiblem, gummiartigem Material bestehenden Düse bedingt, daß die Wandstärke der den Düsenkanal 14 umgebenden, rotationssymmetrisch zur Düsenachse 17 angeordneten, elastisch flexiblen Wandung im mittleren Abschnitt 15 oberhalb der Führungsstege 12 und unterhalb des zylindrischen Außenabschnitts 16 am dünnsten ist und sich zu beiden offenen Enden hin kontinuierlich vergrößert.The nozzles 7 of the nozzle assembly 6 are formed integrally with the band on a continuous, band-shaped nozzle assembly body or nozzle band 10 made of rubber-elastic or similar elastically flexible material. Each of the individual nozzles, which are easily recognizable in FIG. 3 and are completely and homogeneously formed from the elastic material, has a nozzle inlet 11 which widens in a funnel shape towards the interior of the sprinkler housing and which narrows in the direction of flow and which points radially inwards around its inner periphery 4 Guide webs 12 for low-turbulence or low-turbulence water supply has. In the further course of extending between the nozzle inlet 11 and nozzle outlet 13 nozzle channel 14 is an approximately centrally disposed between the nozzle inlet and nozzle outlet, then connecting directly to the upper end of the guide webs-ßender section 15 is provided, which is tapered substantially conically to the nozzle outlet inner cross section has, which smoothly merges into an outlet-side outer portion 16 having a substantially cylindrical inner cross-section. The cylindrical inner cross section in the outer region 16 is expediently small in comparison to the length of the nozzle channel and is for example between about 5% and 20 or 30% of its length. The outer contour of the nozzle tapers from the upper portion of the guide webs 12, starting approximately conically with slightly concave inwardly curved outer surfaces to an outlet side, approximately cylindrical outer cross section. This shaping of the nozzle made of elastically flexible, rubbery material conditional that the wall thickness of the nozzle channel 14 surrounding, rotationally symmetrical to the nozzle axis 17 arranged elastically flexible wall in the middle section 15 above the guide webs 12 and below the cylindrical outer portion 16 is thinnest and continuously enlarged towards both open ends.

Durch den besonders dünnwandigen Mittelabschnitt 15 wird im langgestreckten Verlauf des Düsenkanals 14 in Richtung des Wasserflusses zwischen Düseneinlaß 11 und Düsenauslaß 13 ein Querschnittsänderungsabschnitt 15 geschaffen, in dem durch Krafteinwirkung quer zur Längsrichtung des Düsenkanals eine Abklemmung bzw. Abschnürung des Düsenkanales, ggf. bis zu seiner vollständigen Abdichtung, möglich ist. Bei der Abklemmung oder Abschnürung im dünnwandigen Mittelbereich bleiben sowohl der Düsenauslaßbereich 16, als auch der Düseneinlaßbereich 11, die beide jeweils dickerwandig sind als der Querschnittsänderungsabschnitt 15, im wesentlichen in ihrer Form unverändert.Due to the particularly thin-walled middle section 15, a cross-sectional change section 15 is created in the elongated course of the nozzle channel 14 in the direction of water flow between the nozzle inlet 11 and nozzle outlet 13, in which by force transverse to the longitudinal direction of the nozzle channel a clamping or constriction of the nozzle channel, possibly up to his complete seal, is possible. When clamping or pinching in the thin-walled central region, both the nozzle outlet portion 16 and the nozzle inlet portion 11, both thicker than the cross-sectional change portion 15, remain substantially unchanged in shape.

Die Düsen sind im Bereich der Düseneinlässe 11 vom Inneren des Regnergehäuses 2 in eine Reihe von Einlaß-Durchlaßöffnungen 20 an der abgeflachten Oberseite des Gehäuses 2 mittels widerhakenartiger, ringförmiger Vorsprünge 21 selbsthaltend und selbstdichtend eingesetzt. Das rohrförmige Gehäuse 2 bildet somit eine erste Halteeinrichtung zum lagefesten Halten der Düseneinlaßbereiche 11. Zum lagefesten Halten der sowohl außen, als auch innen im wesentlichen zylindrischen Düsenauslaßbereiche ist eine als gerade Deckleiste 22 ausgebildete, am Regnergehäuse 2 lösbar befestigte zweite Halteeinrichtung vorgesehen, die im in Fig. 3 gezeigten Querschnitt kreissegmentförmig mit einer eben abgeflachten Oberseite ist, in der eine Reihe von Auslaß-Durchgangsöffnungen 23 zum lagefesten Halten der Düsenauslässe vorgesehen ist. Jede der Auslaß-Durchgangsöffnungen 23, von denen für jede Düse genau eine vorgesehen ist, ist im wesentlichen zylindrisch und im Durchmesser dem Außendurchmesser des Düsenauslaßbereiches 16 so angepaßt, daß dieser im wesentlichen spielfrei in der zugeordneten Auslaß-Durchgangsöffnung gehalten ist. Wie in Fig. 1 zu erkennen ist, sind die Zylinderachsen der Führungslöcher bzw. Auslaß-Durchgangsöffnungen 23 nicht parallel zueinander, sondern in einer der Schnittebene von Fig. 1 entsprechenden Ebene gegeneinander derart verkippt, daß ihre die Abstrahlrichtung 8 der Düsen bestimmenden Längsachsen fächerartig vom Gehäuse 2 weg auseinanderstreben.The nozzles are self-retaining in the region of the nozzle inlets 11 from the interior of the sprinkler housing 2 into a series of inlet passage openings 20 on the flattened upper side of the housing 2 by means of barb-like, annular projections 21 and used self-sealing. The position of holding the both outside, and inside substantially cylindrical Düsenauslaßbereiche a designed as a straight cover strip 22, on the sprinkler housing 2 releasably secured second holding device is provided for the positionally stable holding in the in Fig. 3 is shown in cross-section of a circle segment with a flat top side, in which a number of outlet through-holes 23 is provided for holding the nozzle outlets fixed in position. Each of the outlet passages 23, of which exactly one is provided for each nozzle, is substantially cylindrical and of diameter matched to the outer diameter of the nozzle outlet portion 16 so as to be held substantially free of play in the associated outlet passageway. As can be seen in Fig. 1, the cylinder axes of the guide holes or outlet passage openings 23 are not parallel to each other, but in a plane corresponding to the sectional plane of Fig. 1 tilted against each other such that their the radiation direction of the nozzle 8 determining longitudinal axes fan-like from Diverge housing 2 away.

Diese Ausbildung ermöglicht eine besonders einfache Montage eines Regners mit fächerartigem Regnerbild. Die Düsen des Düsenbandes 10 können bei Einsetzen des Düsenbandes in das Regnergehäuse zunächst alle gleich ausgerichtet sein, d.h. ihre Auslaßabschnitte 16 können parallel zueinander verlaufen. Erst im eingebauten Zustand können durch Umbiegen der Düsenauslaßbereiche 16 unterschiedliche, aufgefächerte Strahlrichtungen erhalten werden. Im gezeigten Beispiel wird dies dadurch erreicht, daß die fächerartig auseinanderstrebenden Führungslöcher 23 der Deckleiste 22 die Düsenauslaßbereiche 16 in die jeweils gewünschte Richtung umlenken. Die Auslaß-Durchlaßöffnungen 23 haben nach innen gewandte Einlaßseiten bzw. Einführabschnitte 24, die im gleichen Abstand entlang der Düsenreihe liegen wie die Düsen selbst und die bei richtiger axialer Anordnung von Gehäuse 2 und Deckleiste 22 zueinander mit den Auslaßseiten 25 der Einlaß-Durchlaßöffnungen 20 fluchten. Hierdurch kann bei der Montage die Deckleiste 22 von oben auf die Düsenreihe aufgesetzt werden, wobei die Düsen kollektiv in die Einführabschnitte 24 bzw. die Führungslöcher 23 eintreten, ohne daß sie einzeln eingefädelt werden müssen. Beim weiteren Aufschieben der Deckleiste auf die Düsen in Richtung des Düsenkastens 2 gleiten die Düsenauslaßabschnitte 16 in die Führungslöcher 23 und werden dabei elastisch umgelenkt. Zur vorzugsweise lösbaren Befestigung der Deckleiste 22 an der Oberseite des Düsenkastens 2 sind alle geeigneten Verbindungsmittel, beispielsweise Schrauben o. dgl. verwendbar. Besonders montagegünstig ist eine werkzeuglos herstellbare Schnappverbindung, bei der beispielsweise an der abgeflachten Oberseite des Regnergehäuses 2 in Längsrichtung verlaufende Haltestege mit nach außen gerichteten Haltenasen vorgesehen sind, die von nach innen gerichteten Haltenasen an nach unten gerichteten Verbindungsstegen der Deckleiste 22 bei Aufdrücken schnappend hintergriffen werden. Durch Auswechslung von Deckleisten mit unterschiedlichen Führungsloch-Neigungen kann das Grund-Regnerbild des Regners leicht verändert werden.This design allows a particularly simple installation of a sprinkler with fan-like sprinkler image. The nozzles of the nozzle belt 10 may initially be all aligned the same when inserting the nozzle strip in the sprinkler housing, ie their outlet sections 16 may be parallel to each other. Only when installed can be obtained by bending the Düsenauslaßbereiche 16 different, fanned beam directions. In the example shown, this is achieved in that the fan-apart diverging guide holes 23 of the cover strip 22 deflect the nozzle outlet 16 in the direction desired in each case. The Outlet passage openings 23 have inwardly facing inlet sides or insertion sections 24, which lie at the same distance along the row of nozzles as the nozzles themselves and the right axial arrangement of the housing 2 and cover strip 22 to each other with the outlet sides 25 of the inlet passage openings 20 are aligned. As a result, during installation, the cover strip 22 can be placed from above onto the row of nozzles, wherein the nozzles collectively enter the insertion sections 24 and the guide holes 23, respectively, without having to be individually threaded. Upon further pushing the cover strip on the nozzles in the direction of the nozzle box 2 slide the Düsenauslaßabschnitte 16 in the guide holes 23 and are thereby deflected elastically. For preferably detachable attachment of the cover strip 22 at the top of the nozzle box 2 are all suitable connecting means, such as screws o. The like. Usable. Particularly easy assembly is a tool-produced snap connection in which, for example, on the flattened top of the sprinkler housing 2 extending holding webs are provided with outwardly directed retaining lugs, which are engaged behind by inwardly directed retaining lugs downwardly directed connecting webs of the cover strip 22 when pressed snapping. By replacing cover strips with different guide hole inclinations, the basic sprinkler image of the sprinkler can be easily changed.

Durch die nach der Montage vorliegende Lagefixierung der Düseneinlaßabschnitte 11 in den Öffnungen 20 des Regnergehäuses 2 und der Düsenauslässe 11 in den Führungslöchern 23 der Deckleiste 22 mit Abstand oberhalb der Regnergehäuse-Oberseite sind die mittleren Abschnitte 15 der Düsen aus Richtung quer zur Düsenachse 17 frei zugänglich, können jedoch bei Krafteinwirkung quer zur Düsenachse seitlich im wesentlichen nicht ausweichen.As a result of the positional fixing of the nozzle inlet sections 11 present in the openings 20 of the sprinkler housing 2 and the nozzle outlets 11 in the guide holes 23 of the cover strip 22 at a distance above the sprinkler housing upper side, the central sections 15 of the nozzles are freely accessible from the direction transverse to the nozzle axis 17 , but can not escape laterally when force transverse to the nozzle axis substantially.

Bei der gezeigten Ausführungsform kann die Flüssigkeitsabgabe einer einzelnen Düsen mittels einer Verstelleinrichtung verstellt werden, die an dem Querschnittsänderungsabschnitt 15 angreifende Querschnittsänderungsmittel in Form eines Klemmschiebers 30 hat. Bei der in Figuren 1 und 2 gezeigten Ausführungsform sind lediglich jeweils drei randständige Düsen durch Schieber 30 abstellbar, während die mittleren Düsen immer im Betrieb sind. Es können auch für andere Düsen oder Düsengruppen, insbesondere auch für alle Düsen der Beregnungsvorrichtung, derartige Klemmschieber oder andere, insbesondere gleichwirkende Querschnittsänderungsmittel vorgesehen sein.In the embodiment shown, the liquid delivery of a single nozzle can be adjusted by means of an adjusting device which has cross-sectional change means in the form of a clamping slide 30 acting on the cross-sectional change section 15. In the embodiment shown in Figures 1 and 2 only three marginal nozzles are shut off by slide 30, while the middle nozzles are always in operation. It can also be provided for other nozzles or nozzle groups, in particular for all nozzles of the sprinkler, such clamping slide or other, in particular equivalent cross-sectional change means.

Jeder der Schieber, von denen einer in Fig. 3 im Längsschnitt, in Fig. 4 in Draufsicht und in Fig. 5 im Querschnitt gezeigt ist, ist manuell parallel zu einer Klemmrichtung 31 verschiebbar, die senkrecht zur Längsrichtung der Düsenreihe 6 verläuft, und ist dabei zwischen einem Paar von Führungsstegen 32 geführt, die, wie in Fig. 1 zu erkennen ist, einstückig mit dem Regnergehäuse 2 ausgebildet und jeweils zwischen zwei benachbarten Einlaß-Durchlaßöffnungen angeordnet sind. Bei der gezeigten Ausführungsform ist ein Schieber, wie in den Figuren 3, 4 und 5 zu erkennen, in Form eines parallelseitig begrenzten Kreisbogenabschnitts geformt, zwischen seinen zugeordneten Führungsstegen 32 seitenspielfrei geführt und entlang eines Umfangssegments des Düsenkastens gleitgelagert derart verschiebbar, daß eine Verschiebung in Klemmrichtung einer Schwenkung des Klemmschiebers um die Mittelachse 4 des Düsenkastens entspricht. Andere Ausgestaltungen sind möglich, insbesondere eine ebene Verschiebung eines Klemmschiebers in einer Ebene senkrecht zur Längsrichtung der Düsenreihe und zu den Düsenkanälen 14. Die Schieber sind in ihren Endabschnitten auf der Außenseite mit einer griffgünstigen Querrippung 33 versehen, mittels derer ein Klemmschieber beispielsweise mittels einer gespreizten Hand mittels Daumen und Zeige- oder Mittelfinger feinfühlig parallel zur Klemmrichtung verschwenkt bzw. verschoben werden kann.Each of the slides, one of which is shown in longitudinal section in FIG. 3, in plan view in FIG. 4 and in cross-section in FIG. 5, is manually displaceable parallel to a clamping direction 31 which is perpendicular to the longitudinal direction of the nozzle row 6 thereby guided between a pair of guide webs 32, which, as can be seen in Fig. 1, formed integrally with the sprinkler housing 2 and are each arranged between two adjacent inlet passage openings. In the embodiment shown, a slider, as shown in Figures 3, 4 and 5, formed in the form of a parallel-sided circular arc section, guided between its associated guide webs 32 and free-play along a circumferential segment of the nozzle box slidably mounted so that a shift in the clamping direction a pivoting of the clamping slide around the central axis 4 of the nozzle box corresponds. Other embodiments are possible, in particular a planar displacement of a clamping slide in a plane perpendicular to the longitudinal direction of the nozzle row and to the nozzle channels 14. The slides are in their end portions on the outside with a convenient cross-ribbing 33 provided by means of which a clamping slide, for example by means of a spread hand by means of thumb and index or middle finger can be sensitively pivoted parallel to the clamping direction or moved.

Jeder der Klemmschieber hat eine den Querschnittsänderungsabschnitt 15 der zugeordneten Düse einschließende, tropfenförmige Klemmöffnung 34, deren lichte Weite quer zur Klemmrichtung bzw. parallel zur Achse 4 sich in Klemmrichtung abschnittsweise ändert. Bei der Ausführungsform hat die Klemmöffnung einen etwa birnenförmigen, weiten Öffnungsabschnitt 35, dessen lichte Weite im wesentlichen so groß wie oder geringfügig größer ist als der Durchmesser der zugeordneten Düse im Bereich des Querschnittsänderungsabschnitts 15. Wenn der Klemmschieber, wie in Fig. 3 gezeigt, so eingestellt ist, daß die Düse im Bereich des weiten Öffnungsabschnittes durch die Klemmöffnung hindurchragt, so ist die Düse im wesentlichen frei von äußeren Klemmkräften und der elastisch flexibel begrenzte Querschnittsänderungsabschnitt nimmt seine entlastete Stellung mit maximalem Durchlaßquerschnitt des Düsenkanals ein. An den weiten Öffnungsabschnitt 35 schließt sich über einen kontinuierlich sich verengenden Zwischenabschnitt 36 ein in Klemmrichtung benachbarter Klemmabschnitt 37 an, der bei der Ausführungsform parallelseitig begrenzt ist und senkrecht zur Klemmrichtung eine lichte Weite hat, die etwas weniger als das Doppelte der Düsenwandstärke im Bereich des Querschnittsänderungsabschnittes 15 beträgt. Diese Dimensionierung bedingt, daß bei Verschiebung des Klemmschiebers derart, daß der Querschnittsänderungsabschnitt in den Klemmabschnitt 37 gelangt, der Düsenkanal bis zur vollständig flüssigkeitsdichten Abklemmung aus diametral gegenüberliegenden Seiten zusammengedrückt wird, so daß der Flüssigkeitsstrom durch die Düse in der Klemmstellung sicher unterbrochen ist. In Fig. 5 ist zu erkennen, daß die Öffnungsränder der Klemmöffnung 34 sowohl auf der der Deckleiste zugewandten Oberseite, als auch auf der dem Gehäuse 2 zugewandten Unterseite sanft abgerundet sind, so daß das Material des Düsenkörpers auch bei vielfacher Betätigung des Klemmschiebers durch diesen nicht beschädigt wird.Each of the clamping slide has a drop-shaped clamping opening 34 enclosing the cross-sectional change section 15 of the associated nozzle, whose clear width transversely to the clamping direction or parallel to the axis 4 changes in sections in the clamping direction. In the embodiment, the clamping opening has an approximately pear-shaped, wide opening portion 35 whose clear width is substantially as large as or slightly larger than the diameter of the associated nozzle in the region of the cross-sectional change portion 15. If the clamping slide, as shown in Fig. 3, see is adjusted so that the nozzle projects through the clamping opening in the region of the wide opening portion, the nozzle is substantially free of external clamping forces and the elastically flexible limited cross-sectional change portion assumes its unloaded position with maximum passage cross-section of the nozzle channel. At the wide opening portion 35 is followed by a continuously narrowing intermediate portion 36 in the clamping direction adjacent clamping portion 37, which is limited in the embodiment parallel side and perpendicular to the clamping direction has a clear width, which is slightly less than twice the nozzle wall thickness in the region of the cross-sectional change section 15 is. This dimensioning requires that upon displacement of the clamping slide so that the cross-sectional change section enters the clamping section 37, the nozzle channel is compressed to completely liquid-tight clamping from diametrically opposite sides, so that the liquid flow through the nozzle in the clamping position safely is interrupted. In Fig. 5 it can be seen that the opening edges of the clamping opening 34 are gently rounded both on the cover strip facing top, as well as on the housing 2 facing bottom, so that the material of the nozzle body even with multiple operation of the clamping slide by this not is damaged.

Bei der Montage werden die Klemmschieber mit dem weiten Öffnungsabschnitt 35 über die Düsen zwischen die Führungsstege 32 gelegt und danach wird die Deckleiste 22 auf die Düsenauslässe geschoben und auf dem Düsenkasten rastend befestigt. Die Klemmschieber ragen dann durch seitliche Führungsöffnungen 39 der Deckleiste hindurch und werden durch diese gegen Herunterfallen gesichert.During assembly, the clamping slide with the wide opening portion 35 are placed over the nozzles between the guide webs 32 and then the cover strip 22 is pushed onto the nozzle outlets and mounted latching on the nozzle box. The clamping slide then protrude through lateral guide openings 39 of the cover strip and are secured by this against falling.

Durch die Erfindung ist also insbesondere auch die beschriebene, sehr schnell und einfach zusammenbaubare Beregnungsvorrichtung für viereckige Beregnungsflächen möglich, bei der die Düsen zumindest in einem vorzugsweise mittleren Abschnitt zwischen Düseneinlaß 11 und Düsenauslaß 13 als gummielastische Wasserführungskanäle ausgeführt sind, die durch Krafteinwirkung quer zur Wasserflußrichtung abgeklemmt werden können, ohne daß der Düseneinlaß und/oder der Düsenauslaß durch gesonderte Sperreinrichtungen abgedichtet werden muß. Düseneinlaß und Düsenauslaß können für ihre Funktion optimal gestaltet sein und behalten ihre Form und Funktion auch während des Abklemmvorganges, bei dem der Durchlaßquerschnitt der Düse kontinuierlich ggf. bis auf Null reduziert werden kann, bei. Die Verstellbarkeit des Regnerbildes erfindungsgemäßer Beregnungsvorrichtungen wird insbesondere nicht durch Verkalkung von Düsen beeinträchtigt, denn der für die Absperrung genutzte mittlere Abschnitt 15 der Düse ist zum einen wenig verkalkungsanfällig, weil er der Umgebungsluft zumindest weniger häufig ausgesetzt ist als der Bereich des Düsenauslasses, und weil zum anderen bei jedem Abklemmvorgang ggf. anhaftende Ablagerungen von der zusammengedrückten Wandung abplatzen und aus der Düse ausgespült werden können. Es ist eine dauerhaft funktionsfähige Beregnungsvorrichtung geschaffen, deren Regnerbild sehr variabel einstellbar ist.By means of the invention, therefore, the sprinkling device for quadrangular irrigation surfaces which is described and can be assembled very quickly is possible, in which the nozzles are designed as rubber-elastic water supply channels at least in a preferably middle section between the nozzle inlet 11 and the nozzle outlet 13, which are clamped by force transversely to the water flow direction can be without the nozzle inlet and / or the nozzle outlet must be sealed by separate locking devices. Nozzle inlet and nozzle outlet can be optimally designed for their function and retain their shape and function even during the Abklemmvorganges, in which the flow area of the nozzle can be continuously reduced to zero, if necessary. The adjustability of the sprinkler image irrigation device according to the invention is not affected in particular by calcification of nozzles, because the used for the shut-off middle section 15 of the nozzle is a little calcification prone because it is at least less exposed to the ambient air than the area of the Nozzle outlet, and because, on the other hand, at each Abklemmvorgang abaftenden deposits from the compressed wall and can be rinsed out of the nozzle. It is created a permanently functioning irrigation device whose sprinkler image is very variable adjustable.

Die Erfindung wurde am Beispiel eines Viereckregners erläutert. Sie ist jedoch bei entsprechender Gestaltung der zusammenwirkenden Elemente, auch bei Rundregnern und Beregnungsvorrichtungen für andersartig geformte Beregnungsflächen einsetzbar.The invention has been explained using the example of a square sprinkler. However, it can be used with appropriate design of the interacting elements, even with round sprinklers and sprinklers for differently shaped sprinkling surfaces.

Claims (17)

  1. Method for adjusting the sprinkler configuration of a sprinkler device, in particular a quadrilateral sprinkler, the sprinkler device having a nozzle arrangement which can be connected to a fluid supply and which has a plurality of nozzles, each of which has a nozzle inlet which is connected to a nozzle outlet by means of a nozzle channel, the fluid flow through the nozzle being influenced at least at one nozzle in order to adjust the sprinkler configuration, with a nozzle channel cross-section of the nozzle channel being modified in at least one cross-section modification portion, characterised in that the cross-section modification portion is located between the nozzle inlet and the nozzle outlet.
  2. Method according to claim 1, characterised in that the cross-section modification portion is located substantially centrally between the nozzle inlet and the nozzle outlet, the nozzle channel cross-section in the region of the nozzle inlet and/or the nozzle outlet preferably not being substantially modified during the adjustment operation.
  3. Method according to claim 1 or 2, characterised in that the nozzle channel cross-section continuously decreases, preferably until the nozzle channel is blocked in a fluid-tight manner, or increases up to the maximum flow cross-section.
  4. Method according to any one of the preceding claims, characterised in that the cross-section modification portion is compressed during the adjustment operation by applying force transversely relative to the nozzle channel, with the cross-section being reduced, or increases with the cross-section being enlarged, the cross-section modification portion preferably being compressed symmetrically relative to the nozzle channel during the adjustment operation, preferably from two directions diametrically opposed to the nozzle channel, in particular perpendicularly relative to the longitudinal direction of the nozzle channel.
  5. Sprinkler device, in particular a quadrilateral sprinkler, having at least one nozzle arrangement which can be connected to a fluid supply and which has a plurality of nozzles, each of which has a nozzle inlet which is connected to a nozzle outlet by means of a nozzle channel, and having an adjustment device for selective adjustment of the fluid output of individual nozzles or nozzle groups of the nozzle arrangement, at least one nozzle (7) having at least one cross-section modification portion (15), in which the nozzle channel cross-section can be modified and the adjustment device having cross-section modification means (30) which act on the cross-section modification portion (15), characterised in that the cross-section modification portion (15) of the nozzle (7) is arranged between the nozzle inlet (11) and the nozzle outlet (13).
  6. Sprinkler device according to claim 5, characterised in that the nozzle arrangement is a single, preferably straight nozzle row (6).
  7. Sprinkler device according to claim 5 or 6, characterised in that the cross-section modification portion (15) of the nozzle (7) is arranged substantially centrally between the nozzle inlet (11) and the nozzle outlet (13).
  8. Sprinkler device according to any one of claims 5 to 7, characterised in that it has a first retaining device (2) having inlet through-holes (20) for stable retention of the nozzle inlets (11) and a second retaining device (22) which is arranged with spacing therefrom and which has outlet through-holes (23) for stable retention of the nozzle outlets (13), the first retention device preferably being formed by a preferably tubular fluid supply housing (2) of the sprinkler device and/or the second retaining device being formed by a retaining member (22) which is secured to a housing of the sprinkler device and which is preferably in the form of a strip.
  9. Sprinkler device according to claim 8, characterised in that the inlet sides (24) of the outlet through-holes (23) are in alignment with the outlet sides (25) of the inlet through-holes (20) and/or in that the outlet through-holes (23) have opening axes which are arranged at an oblique angle with respect to opening axes of the inlet through-holes (20), the outlet through-holes (23) preferably being tilted one relative to each other in a fan-like manner.
  10. Sprinkler device according to any one of claims 5 to 9, characterised in that a nozzle (7), at least in the region of the cross-section modification portion (15) thereof, has a wall of resiliently flexible material which at least partially, preferably completely surrounds the nozzle channel (14).
  11. Sprinkler device according to any one of claims 5 to 10, characterised in that a nozzle (7) has a preferably integral nozzle body of resiliently flexible, in particular rubber-like material, on which the nozzle inlet (11), the nozzle outlet (13), the nozzle channel (14) and the cross-section modification portion (15) is formed and/or in that the nozzle arrangement (6) has at least one composite, preferably strip-like nozzle arrangement body (10) of resiliently flexible, in particular rubber-like material, on which a plurality, preferably all the nozzle bodies of the nozzle arrangement are arranged, preferably in an integral manner.
  12. Sprinkler device according to any one of claims 5 to 11, characterised in that a nozzle (7) has a nozzle inlet (11) which is open towards the inlet side, preferably in a funnel-like manner, and which has inwardly directed axial guiding webs (12) for guiding water with a low level of turbulence and/or in that a nozzle channel, between the nozzle inlet (11) and the nozzle outlet (13), has a portion (15) which has an inner cross-section which continuously decreases towards the nozzle outlet and which preferably merges into an outer portion (16) at the outlet side having a substantially cylindrical inner cross-section and/or in that a nozzle (7) has an outer diameter which tapers at least partially in a substantially conical manner from the nozzle inlet (11) to the nozzle outlet (13).
  13. Sprinkler device according to any one of claims 5 to 12, characterised in that the cross-section modification portion (15) is arranged between an outlet-side outer portion (16) which preferably has a substantially cylindrical inner cross-section and the nozzle inlet (11), preferably at the outlet side of guiding webs (12) of the nozzle inlet, and/or in that a nozzle (7), at both sides of the cross-section modification portion (15), has a wall thickness which is thicker than the wall thickness in the region of the cross-section modification portion, the wall thickness preferably continuously increasing at both sides of the cross-section modification portion (15).
  14. Sprinkler device according to any one of claims 5 to 13, characterised in that the cross-section modification means have at least one clamping device (30) for clamping a cross-section modification portion (15) of at least one nozzle that can be compressed with the cross-section being reduced.
  15. Sprinkler device according to any one of claims 5 to 14, characterised in that the cross-section modification means, in particular the clamping device, for a nozzle (7), have at least one clamping sliding member (30) which can preferably be displaced in a clamping direction (31) transversely relative to the nozzle channel, and which preferably has a clamping opening (34) which includes the cross-section modification portion (15) and whose clear width changes at least partially parallel with the clamping direction, the clamping opening (34) preferably having a wide opening portion (35) which preferably has a cross-section which substantially corresponds to the outer diameter of the relaxed cross-section modification portion, and at least one adjacent clamping portion (37) which is parallel with the clamping device and which has a smaller clear width, the opening portion and the clamping portion preferably merging into each other over a continuously narrowing intermediate portion (36).
  16. Sprinkler device according to any one of claims 5 to 15, characterised in that there is provided, for each of the adjustable nozzles, a separate, preferably manually actuatable cross-section modification means, in particular a clamping sliding member (30), and/or in that cross-section modification means are provided only on some, preferably peripheral nozzles or nozzle groups of a nozzle arrangement, in particular of a nozzle row.
  17. Sprinkler device according to any one of claims 5 to 16, characterised in that a cross-section modification means of a nozzle, in particular a clamping sliding member (30), can be moved substantially perpendicularly relative to the nozzle row.
EP99112625A 1998-07-10 1999-07-02 Method for adjusting the pattern of a sprinkler device and sprinkler device Expired - Lifetime EP0970753B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19830860 1998-07-10
DE19830860A DE19830860A1 (en) 1998-07-10 1998-07-10 Method for adjusting the sprinkler image of a sprinkler and sprinkler

Publications (3)

Publication Number Publication Date
EP0970753A2 EP0970753A2 (en) 2000-01-12
EP0970753A3 EP0970753A3 (en) 2001-03-28
EP0970753B1 true EP0970753B1 (en) 2008-01-23

Family

ID=7873564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112625A Expired - Lifetime EP0970753B1 (en) 1998-07-10 1999-07-02 Method for adjusting the pattern of a sprinkler device and sprinkler device

Country Status (6)

Country Link
US (1) US6062490A (en)
EP (1) EP0970753B1 (en)
AT (1) ATE384583T1 (en)
AU (1) AU751934B2 (en)
DE (2) DE19830860A1 (en)
ES (1) ES2299228T3 (en)

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DE10142143A1 (en) * 2001-08-29 2003-03-27 Gardena Kress & Kastner Gmbh Drive device for sprinkler unit has water-flow housing with separate chamber containing transmission and opening around pivot shaft for sprinkler head closed by sliding plate
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US8011602B2 (en) 2008-08-15 2011-09-06 Eldon Coppersmith Oscillating sprinkler that automatically produces a rectangular water distribution pattern
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CN103402726A (en) * 2011-01-07 2013-11-20 巴斯夫欧洲公司 Method and device for applying liquid reaction mixtures to a cover layer
CN103402726B (en) * 2011-01-07 2016-11-16 巴斯夫欧洲公司 For the method and apparatus that liquid reaction mixture is put on cover layer

Also Published As

Publication number Publication date
US6062490A (en) 2000-05-16
ATE384583T1 (en) 2008-02-15
EP0970753A2 (en) 2000-01-12
EP0970753A3 (en) 2001-03-28
DE59914614D1 (en) 2008-04-30
ES2299228T3 (en) 2008-05-16
AU3912499A (en) 2000-02-03
AU751934B2 (en) 2002-08-29
DE19830860A1 (en) 2000-01-13

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