EP1795267A1 - Asperseur - Google Patents

Asperseur Download PDF

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Publication number
EP1795267A1
EP1795267A1 EP06024970A EP06024970A EP1795267A1 EP 1795267 A1 EP1795267 A1 EP 1795267A1 EP 06024970 A EP06024970 A EP 06024970A EP 06024970 A EP06024970 A EP 06024970A EP 1795267 A1 EP1795267 A1 EP 1795267A1
Authority
EP
European Patent Office
Prior art keywords
individual
nozzle
beams
degrees
range
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.)
Granted
Application number
EP06024970A
Other languages
German (de)
English (en)
Other versions
EP1795267B1 (fr
Inventor
Christoph Schiedt
Thomas Renner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gardena Manufacturing GmbH
Original Assignee
Gardena Manufacturing GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gardena Manufacturing GmbH filed Critical Gardena Manufacturing GmbH
Publication of EP1795267A1 publication Critical patent/EP1795267A1/fr
Application granted granted Critical
Publication of EP1795267B1 publication Critical patent/EP1795267B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements with means for regulating the jet relative to the horizontal angular position of the nozzle, e.g. for spraying non circular areas by changing the elevation of the nozzle or by varying the nozzle flow-rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area

Definitions

  • the invention relates to a sprinkler with variably adjustable range.
  • the jet pattern and the uniformity of the watering density are satisfactory only for a relatively small variable range of range.
  • Increasing the pressure flow through the nozzle assembly will result in increasing uncontrolled spraying at the nozzle exit and in the jet path, decreasing the flow will cause the emitted jet to be laminar and will only irrigate a narrow radial section.
  • the invention has for its object to provide an improved sprinkler, wherein during the pivoting of a nozzle assembly about a vertical axis, a change in the range of the spray pattern generated by the nozzle assembly by means of an electronic control device and controlled by this regulating valve upstream of the nozzle assembly with a uniform irrigation density of Surface is possible.
  • the individual jets at the exit from the associated individual nozzles run largely laminar independently of the range set via the regulating valve, in particular even at the greatest adjustable range, ie. H. the largest adjustable flow rate.
  • Laminar rays are particularly susceptible to wind and can be adjusted very precisely in their course as solo beams.
  • the relative course of the individual beams remains essentially independent of the variably adjustable range of the beam pattern, determined by the range of the farthest individual beam, while the range of the beam pattern is varied.
  • the laminar beam path is not retained as a solo beam over the entire beam path.
  • the beam undergoes widening and division into partial beams, beam sections and drops of different sizes, so that even at the at least predominant overlaps no bundled laminar beams hit each other.
  • An angle averaged over all overlaps between intersecting individual beams is advantageously at least 30 degrees.
  • the several individual jets advantageously have different angles of the beam directions against the axis of rotation at the nozzle exit, wherein preferably the individual jets in the vicinity of the nozzle outlets show a diverging beam as a jet pattern.
  • a smaller exit angle of the individual beam is correlated with the vertical with a shorter range than a single beam.
  • At crossovers of two beams advantageously at least one of the two beams is located on a falling portion of the beam curve.
  • the smallest exit angle against the vertical axis of rotation is at least 6 degrees, in particular at least 9 degrees.
  • the smallest exit angle is advantageously at most 20 degrees, in particular at most 15 degrees.
  • the maximum exit angle is advantageously at most 60 degrees.
  • the jet pattern comprises at least four individual beams.
  • the individual nozzles of the nozzle arrangement are advantageously arranged in a row.
  • the individual nozzles can be arranged within the nozzle arrangement in different relative positions, in a preferred embodiment also on opposite sides with respect to the axis of rotation, but the projections of the emitted beams onto the surface to be wetted all point in the same direction of the common vertical plane.
  • the horizontal components of the movement of the emitted beams or the beam exit directions from the nozzle arrangement are advantageously all directed essentially parallel in the same radial direction.
  • the radial sprinkling regions of the individual beams as solo beams are advantageously not mutually overlapping.
  • irrigation range of a single beam as a single beam is understood, for example, the area within which the irrigation density at least a minimum, z. B. is 20% of the maximum irrigation density of this single beam.
  • the range of the spray pattern with uniform surface irrigation is advantageously by a factor of at least 2, in particular at least 3 changeable.
  • the change of the range is advantageously carried out by changing the flow cross section of the regulating valve, wherein the maximum adjustable flow cross section of the regulating valve is advantageously smaller than the sum of the flow cross sections of all individual nozzles of the nozzle arrangement.
  • the nozzle cross sections of the individual nozzles are advantageously at least partially different, whereby advantageously the jet with the greatest range can be assigned the largest nozzle cross section.
  • FIG. 1 shows schematically the preferred structure of an irrigation device for irrigation of irregularly bounded surfaces.
  • a sprinkler arrangement RA has a nozzle arrangement DU which is rotatable relative to a housing of the sprinkler arrangement assumed to be stationary about a typically vertically oriented axis of rotation DA.
  • the sprinkler arrangement can be operated as a circular sprinkler with continuous rotary motion or as sector sprinkler with alternating direction of rotation.
  • the drive of the rotation of the nozzle assembly is preferably carried out by means of a turbine wheel driven by at least a portion of the water flowing to the nozzle assembly and a speed-reducing gear.
  • One of the rotational position of the nozzle arrangement um.die vertical axis of rotation dependent range of the beam assembly is advantageously stored as a pairwise assignment of digital values of rotational position and range in a memory of a structurally preferably associated with the sprinkler electronic control device.
  • the current rotational position is advantageously detectable via a rotational angle sensor arrangement.
  • the control device is advantageously programmable by the user, in particular by storing an association of rotational positions of the nozzle arrangement and ranges of the beam arrangement matched to the respective area to be wetted.
  • the programming of pairs of values assigned values of rotational position and range is carried out in such a way that the nozzle assembly from the user to a specific rotational position, in particular in the direction of a characteristic point, such as a corner, the contour of the surface to be wetted set and set the desired range in this rotational position and the value pair are stored.
  • the setting of a certain rotational position and maintaining it to the setting of the desired range and storage of the value pair is preferably carried out by the nozzle assembly is stopped in its continuous rotational movement manually or by engaging an electronically activated mechanical lock.
  • Controls for setting the range can be united in a first advantageous embodiment together with the control device structurally with the sprinkler arrangement.
  • a spatially separated from the sprinkler control device may be provided, which is connected via a preferably detachable cable or via a wireless signal connection to the sprinkler arrangement or a structurally combined with this control device and the remote control of the programming process, optionally including stopping the rotation of the nozzle assembly, the setting of the desired range and the programming of value pairs allows.
  • a few value pairs for rotational positions in the direction of characteristic points of the surface contour are programmed and the ranges to other rotational positions are derived by interpolation.
  • the above features for programming the control means are also applicable to a sprinkler irrespective of the particular jet pattern with overlapping single jets.
  • the sprinkler arrangement is via a water-bearing supply line ZL, z. B. connectable with the inclusion of an irrigation computer with a water source, in particular a pump or a general water supply or lockable.
  • a water source in particular a pump or a general water supply or lockable.
  • the nozzle assembly is continuously rotated by the drive means about the axis of rotation DA, the sector rotor operation with alternating direction of rotation switching at the sector boundaries.
  • the current angular position is continuously determined by means of an angle sensor signal SD of a rotational angle sensor DS in a control device SE.
  • the control device outputs a control signal SI to an actuator in the sprinkler arrangement which actuates the regulating valve and adjusts it so that a range of rotation of the jet arrangement emitted by the nozzle arrangement is achieved becomes.
  • the maximum adjustable flow cross section of the regulating valve is smaller than the sum of the nozzle cross sections of all the individual nozzles of the nozzle arrangement.
  • FIG. 2 shows an example of an irregularly edged surface which is sprinkled with a sprinkler BV operated as a sector sprinkler with a rotation angle-dependent range RI (Wi) of the beam arrangement.
  • Fig. 3 shows schematically for a rotatable about a vertical axis of rotation DA nozzle assembly DU a spray pattern with six individual nozzles of the nozzle array emitted individual beams S1H, S2H, ... to S6H in a single position of a sprinkler to maximum range RH.
  • the individual beams S1H through S6H are ideally drawn as undisturbed and concentrated focused beams throughout their trajectory to better illustrate beam parameters such as crossovers and ranges.
  • the beams are all substantially in a common vertical plane, which preferably passes through the vertical axis of rotation DA.
  • the undisturbed course corresponds to the beam course of solo beams, ie the respective individual beams in the fictitious situation without other beams.
  • the real beam path deviates from the continuous concentrated bundled form and, with increasing travel along the beam path, shows an expansion and a division, both in the radial direction and perpendicular to said common plane.
  • the real solo beams show radial sprinkling ranges due to the beam broadening, as recorded for the beam S4H with RB4 with a distribution of the sprinkling density by a maximum the irrigation density.
  • a radial irrigation area is defined as the area within which the irrigation density is at least 20% of the maximum irrigation density within the distribution.
  • the irrigation zones following one another in the radial direction do not overlap, at least for the majority of the solo beams.
  • nozzles can be used for the given, but small beam expansion of the solo beams, which achieve large and / or exactly selectable and adjustable ranges of the solo beams.
  • Nozzles for defined beam shapes are known per se in large numbers. Rays with low beam expansion can, unlike single jets for the irrigation of said radial distance from the nozzle assembly, advantageously set without changing the beam shape in one and the same nozzle over a wide range by varying the flow rate variable.
  • the individual beams can be changed as a solo beam by means of an upstream, common to all control valve control over a wide range of change in range, but maintained in the collective change the small expansion as a solo beam and the relative course to the other beams ,
  • it is advantageously possible to predetermine a basic distribution of the irrigation density with a few nozzles, which is leveled by the deliberately inserted disturbance of the beam paths through the crossovers. Because the ranges monotonically correlated with the flow rate, there is also an automatic adjustment of the amount of water discharged to the range of the beam assembly.
  • Fig. 3 three jet images to a maximum adjustable range RH in Fig. 3 (A) in a minimum adjustable range RL in Fig. 3 (C) and a central range RM in Fig. 3 (B) are compared to the qualitatively to illustrate consistent jet images.
  • the range of the furthest-reaching beam is entered as the range of the beam arrangement as a solo beam S6H or S6M or S6L without taking account of a distribution of the irrigation density and / or a jet disturbance.
  • Reducing the beamwidths typically also reduces the radial expansions of the sprinkling areas, as indicated by RB4H, RB4M and RB4L.
  • Fig. 4 the jet behavior is simplified at a crossover of two beams SA, SB simplified.
  • the bundled drawn rays are flattened and divided in real cases, so that the rays can penetrate mostly undisturbed.
  • a part of the beams is deflected more or less at the crossover of the undisturbed beam path and forms a disturbance image, which may occur both as indicated by broken lines as small-scale scattering SS as well as in the form of an additional widening or division of the secondary rays.
  • FIG. 3 several such crossings occur in the course of a beam, so that the disturbances accumulate.
  • crossing angles WK at beam crossings are advantageously greater than 10 degrees.
  • a mean crossover angle averaged over all crossovers is at least 30 degrees.
  • Fig. 5 is an enlarged schematic section of a nozzle assembly is sketched with a beam arrangement with a plurality of exiting beams S1 to S6.
  • the jet arrangement Upon exit from the nozzle arrangement, the jet arrangement advantageously forms a diverging beam.
  • the angles W1,..., W6 of the exit directions against the vertical direction of the axis of rotation DA are advantageously different for the individual beams.
  • the smallest angle W1 is advantageously at least 6 degrees, in particular at least 9 degrees.
  • the smallest angle is at most 20 degrees, in particular at most 15 degrees.
  • the largest exit angle W6 is advantageously at most 60 degrees.
  • the difference between the largest exit angle and the smallest exit angle W6-W1 is advantageously at least 30 degrees.
  • the jets advantageously leave the individual nozzles substantially in a laminar jet form.
  • a larger exit angle relative to the vertical is correlated with a greater range, as assumed in the example according to FIG.
  • the nozzle outlets may, as indicated in the example of FIG. 5, be positioned opposite the axis of rotation DA within the nozzle arrangement, but are all directed in the same direction, in the sketch of FIG. 5 to the left.
  • the exit angles to the vertical are all inclined in the same direction against the vertical.
  • the individual nozzles have at least partially different nozzle cross sections for different flow rates in the various individual jets, wherein preferably at least for the majority of the individual jets, the nozzle cross section increases or at least does not decrease with an increasing range determined by the exit angle.
  • the widest nozzle jet S6 is associated with the largest nozzle cross section.
EP06024970A 2005-12-09 2006-12-02 Asperseur Active EP1795267B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005058796 2005-12-09
DE102006010342A DE102006010342A1 (de) 2005-12-09 2006-03-07 Beregnungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1795267A1 true EP1795267A1 (fr) 2007-06-13
EP1795267B1 EP1795267B1 (fr) 2012-06-13

Family

ID=37673028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06024970A Active EP1795267B1 (fr) 2005-12-09 2006-12-02 Asperseur

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EP (1) EP1795267B1 (fr)
DE (1) DE102006010342A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042393A1 (fr) 2009-10-09 2011-04-14 Gardena Manufacturing Gmbh Arroseur
WO2023066801A1 (fr) 2021-10-20 2023-04-27 Husqvarna Ab Système d'arrosage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077600B4 (de) * 2011-06-16 2020-11-26 Lechler Gmbh Düsenanordnung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423024A (en) * 1966-11-03 1969-01-21 Sunbeam Corp Flow restrictor for lawn sprinkler
FR2274364A1 (fr) * 1974-06-12 1976-01-09 Monteau Guy Perfectionnement aux asperseurs de jardin
US20040188540A1 (en) * 2003-03-27 2004-09-30 Derba Mills Adjustable height inverted lawn and garden sprinkler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2142262A5 (fr) * 1971-06-18 1973-01-26 Carpano & Pons
US5280854A (en) * 1992-06-29 1994-01-25 Subhendu Das Robotic sprinkler head
US5526982A (en) * 1993-12-23 1996-06-18 The Toro Company Adjustable sprinkler nozzle
DE4418558A1 (de) * 1994-05-27 1995-11-30 Telefunken Microelectron Vorrichtung zur Detektierung der Drehbewegung eines Sprüharmes
US6402048B1 (en) * 2000-01-26 2002-06-11 Galen Collins Accurate horticultural sprinkler system and sprinkler head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423024A (en) * 1966-11-03 1969-01-21 Sunbeam Corp Flow restrictor for lawn sprinkler
FR2274364A1 (fr) * 1974-06-12 1976-01-09 Monteau Guy Perfectionnement aux asperseurs de jardin
US20040188540A1 (en) * 2003-03-27 2004-09-30 Derba Mills Adjustable height inverted lawn and garden sprinkler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042393A1 (fr) 2009-10-09 2011-04-14 Gardena Manufacturing Gmbh Arroseur
DE102009044215A1 (de) 2009-10-09 2011-04-28 Gardena Manufacturing Gmbh Regner
WO2023066801A1 (fr) 2021-10-20 2023-04-27 Husqvarna Ab Système d'arrosage

Also Published As

Publication number Publication date
EP1795267B1 (fr) 2012-06-13
DE102006010342A1 (de) 2007-06-14

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