WO2011051933A1 - Système d'irrigation par goutte à goutte et mécanisme associé de résistance à l'écoulement - Google Patents

Système d'irrigation par goutte à goutte et mécanisme associé de résistance à l'écoulement Download PDF

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Publication number
WO2011051933A1
WO2011051933A1 PCT/IL2010/000851 IL2010000851W WO2011051933A1 WO 2011051933 A1 WO2011051933 A1 WO 2011051933A1 IL 2010000851 W IL2010000851 W IL 2010000851W WO 2011051933 A1 WO2011051933 A1 WO 2011051933A1
Authority
WO
WIPO (PCT)
Prior art keywords
outlet
membrane
irrigator according
fluid
slope
Prior art date
Application number
PCT/IL2010/000851
Other languages
English (en)
Inventor
Eldad Di-Nor
Moshe Gorny
Original Assignee
Naan Dan Jain Irrigation C.S. Ltd.
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 Naan Dan Jain Irrigation C.S. Ltd. filed Critical Naan Dan Jain Irrigation C.S. Ltd.
Publication of WO2011051933A1 publication Critical patent/WO2011051933A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

Definitions

  • This invention relates to drip irrigation mechanisms, in particular, mechanism for regulating the pressure therein.
  • the pressure of the irrigating substance usually water
  • the pressure within a pipe comprising the drip irrigators may be high, the water should be emitted from the drip irrigator at a steady rate and under a desired pressure.
  • a 'maze' an elaborate structure of channels and flow paths connecting an inlet of the drip irrigator being in fluid communication with the inside of the pipe and an outlet of the drip irrigator facing the outside environment.
  • the water has to travel through the 'maze' before being emitted to the outside environment, in the course of which, the pressure on the water is reduced.
  • a drip irrigator comprising a housing formed with an enclosure, a fluid inlet and a fluid outlet, and a deformable membrane disposed within the housing so as to divide said enclosure into an inlet chamber associated with said fluid inlet and an outlet chamber associated with said fluid outlet; said outlet chamber comprising a base surface and a circumferential wall transverse to said base surface and having an elevated membrane seat; at least a portion of the circumferential wall is formed with a surface slope extending between the membrane seat and the base surface, said slope is formed with a flow path in the form of a slot extending along said surface and having a first slot portion and a second slot portion, said slot facilitating fluid communication between the inlet chamber and the outlet chamber; the deformable membrane is disposed on said membrane seat and is displaceable by deformation at least about said slope; wherein the deformable membrane is designed to assume a first position in which it is deformed to a first degree to come in contact with the first portion of said slope and thereby provide a first working flow
  • the diaphragm may also assume an initial position in which it is generally undeformed.
  • the fluid flow path may be obstructed by virtue of said deformable membrane and the elevated membrane seat, whereby no flow communication is provided between the inlet chamber and the outlet chamber until a predetermined pressure differential between the inlet chamber and the outlet chamber is reached.
  • said flow path in the undeformed position, may still provide fluid communication between the inlet chamber and the outlet chamber, but not at a flow rate sufficient for providing the first working flow regime.
  • the deformable membrane When an appropriate pressure differential is applied between two sides of the membrane, the deformable membrane may assume a deformed position in which a portion of the deformable membrane engages said surface slope at said first portion to expose said flow path sufficiently for providing said first working flow regime.
  • the slot of the irrigator may be formed with a first slot portion adjacent said elevated membrane seat, and a second slot portion, which wider than the first slot portion adjacent said base surface.
  • the deformable membrane in the above deformed position, the deformable membrane may be deformed to an extent such that a portion thereof engages said surface slope at an area of said first slot portion, to allow said irrigator to operate in the first working flow regime which may be defined as a regulation mode.
  • the above portion of the deformable membrane may engage the said surface slope only at an area of said second slot portion, to allow the irrigator to operate in the second working flow regime which may be defined as a cleaning mode.
  • the geometric shape of said slope and the length of said first slot portion and said second slot portion are designed in correspondence with a desired pressure difference on the deformable membrane, for operating in said regulation mode and said cleaning mode respectively.
  • the surface slope may be of a rounded shape.
  • the base surface of the outlet chamber of the irrigator may be formed with an elevated outlet port.
  • the elevated outlet port may have a construction similar to that of the slope and slot previously described.
  • the slot of the elevated outlet port may also have a uniform width, contrary to the slot previously described having a first narrow portion, and a second wider portion.
  • the housing may be in the form of an assembly comprising an inlet member formed with said fluid inlet and an outlet member formed with said fluid outlet, articulated to one another to form said enclosure.
  • the engagement between said inlet member and said outlet member may be made by welding, snap engagement etc.
  • on the inlet member and outlet member may be formed with snap members while the other member is formed with snap openings, adapted for snap engagement therebetween.
  • Said inlet member may be formed with a securing rim corresponding in shape and dimensions to said elevated membrane seat, such that a portion of said deformable membrane may be pinched between said securing rim and said elevated membrane seat.
  • the arrangement may be such that at least a portion of said securing rim is adapted to retain the pinched portion of the deformable membrane in place and prevent it from moving. It is also noted that at least a portion of said elevated membrane seat and said securing rim may be of a shape corresponding to the form of said deformable membrane.
  • the outlet member of said housing may be formed with a tubular extension defined along a central axis, having a proximal end adjacent said base surface and a distal end remote from said base surface, constituting said fluid outlet, and wherein said tubular extension is formed with a fluid splitter disposed therein, adapted for dispersing fluid flow emitted from said housing.
  • Said fluid splitter may be formed with at least one outlet hole extending transverse to said central axis.
  • the above irrigator may be adapted to be fitted within an irrigation pipe.
  • the outlet member may be formed with a removable outlet tip adapted for insertion through an irrigation hole of an irrigation pipe.
  • the removable tip may even be adapted for creating said irrigation hole.
  • Fig. 1 is a schematic isometric view of an irrigator according to the present invention
  • Fig. 2 is a schematic cross-section view of the irrigator shown in Fig. 1 , taken along line I-I;
  • Fig. 3 A is a schematic isometric view of an outlet member of the irrigator shown in Fig. 1;
  • Fig. 3B is a schematic enlarged isometric view of the outlet member shown in Fig. 3A;
  • Fig. 3C is an enlarged schematic cross-section view of detail A shown in Fig. 2
  • Fig. 3D is an enlarged schematic cross-section view of detail B shown in Fig. 2;
  • Fig. 4A is a schematic cross-section view of a portion of the drip irrigator, shown with a membrane in a first position;
  • Fig. 4B is a schematic cross-section view of a portion of the drip irrigator, shown with a membrane in a second position;
  • Fig. 4C is a schematic cross-section view of a portion of the part of the drip irrigator, shown with a membrane in a third position;
  • Fig. 5 is a schematic bottom isometric view of the outlet member shown in Figs. 3 A to 3C;
  • Fig. 6 is a schematic isometric view of an irrigator according to another embodiment of the present invention, fitted within an irrigation pipe;
  • Fig. 7A is a schematic exploded isometric view of the irrigator shown in Fig. 6;
  • Fig. 7B is a schematic isometric view of an inlet member of the irrigator shown in Fig. 7A;
  • Fig. 7C is a schematic isometric view of an outlet member of the irrigator shown in Fig. 7A;
  • Fig. 8 is a schematic cross-section view taken along line II-II shown in Fig. 6;
  • Fig. 9A is a schematic cross-sectional side view of an irrigator according to another embodiment of the present invention, fitted within an irrigation pipe, the section taken along a plane perpendicular to the central axis of the pipe; and
  • Fig. 9B is a schematic isometric exploded view of the irrigator shown in Fig. 9A.
  • an irrigator generally designated 1 comprising an inlet member 10, and an outlet member 20, articulated to one another to from an internal enclosure 2.
  • the irrigator 1 also comprises a membrane 30 positioned within the enclosure 2 so as to divide it into an inlet chamber 3a and an outlet chamer 3b.
  • the irrigator 1 is adapted for attachment into an irrigation line (not shown) such that the inlet member 10 thereof receives water (or any other irrigation fluid) therefrom.
  • the inlet member 10 is formed of a body 12 having a distal end 12a adapted for attachment to the irrigation line and a proximal end 12b adapted for attachment to the outlet member 20.
  • An irrigation channel 14 extends from the distal end 12a towards the proximal end 12b and connects to the inlet chamber 3a, to provide fluid commumcation therebetween.
  • the distal end 12a is formed with a conical head adapted to facilitate conveniently inserting the inlet member 10 into the irrigation line.
  • the distal end 12b is formed with a flange portion 16 adapted for attachment to a corresponding flange portion 26 of the outlet member 20. Such attachment may be, for example, by ultrasonic welding.
  • the outlet member 20 is formed of a body having a distal end 22a adapted for emitting the irrigation fluid and a proximal end 22b adapted for attachment to the inlet member 10.
  • the proximal end 22b is formed with a flange portion 26 adapted for articulation to the flange portion 16 of the inlet member 10.
  • An irrigation channel 24 extends from the distal end 22a towards the proximal end 22b and to the outlet chamber 3b, to provide fluid communication therebetween.
  • the outlet member 20 is further formed with a base surface 28. Turning now to Figs. 3A to 3D, the outlet member 20 is shown comprising a membrane seat 40, a flow control arrangement 50 and an emitting arrangement 60, all positioned on the base surface 28.
  • the membrane seat 40 is formed with side walls 42 extending substantially perpendicular to the base surface 28 to form a generally rectangular frame.
  • the frame is formed with a seat surface 44 adapted to receive thereon a peripheral portion of the deformable membrane 30, as will be explained in detail with reference to Figs. 4A to 4C.
  • the flow control arrangement 50 is formed at one of the side walls of the membrane seat 30, and comprises a slope 52a, 52b, and formed therein a slot 54a, 54b, adapted to serve as a flow path.
  • the slot 54a, 54b has an inner surface 56a, 56b having a shape corresponding to the shape of the slope 52a, 52b.
  • the emitting arrangement 60 comprises a semi-spherical hub 62 positioned on the base surface 28 of the outlet member 20.
  • the semi-spherical hub 62 is formed with a central opening adapted for the passage 64 of an irrigation fluid towards the outlet end of the drip irrigator.
  • the semi-spherical hub 62 is also formed with a side slot 66 having an inner surface 68 corresponding in shape to the semi-spherical hub 62.
  • Fig. 4A the deformable membrane 30 is shown positioned such that a peripheral portion 32 thereof rests on the seat surface 44 of the membrane seat 40, such that it divides the enclosure 3 between the inlet member 10 and the outlet member 20 into an inlet chamber 3a and an outlet chamber 3b.
  • a portion 34 thereof is pinched between the seat surface 44 and a rib 18 of the inlet member 10.
  • a pressure differential ⁇ begins to increase between the inlet chamber 3a and the outlet chamber 3b.
  • This pressure differential ⁇ entails deformation of the deformable membrane 30, causing it to 'sink' down into the outlet chamber 3b.
  • Pressure differential ⁇ continues to increase, as well as deformation of the deformable membrane 30 until a central portion 38 of the deformable membrane 30 comes in contact with the passage 64. Thereafter, deformation of the deformable membrane 30 occurs near a working portion 36 thereof, until the working portion 36 is oriented such that one portion thereof 36a is elevated above the portion 45 of the seat surface 44, while another portion thereof 36b is lowered towards the base surface 28.
  • the pressure differential ⁇ drops since the outlet pressure on the side of the outlet chamber 3b increases.
  • This increase in the outlet pressure entails, in turn, an upward movement of the working portion 36 of the deformable membrane 30, and thereafter of the central portion of the deformable membrane 30.
  • the deformable membrane 30 operates in a pulsating manner, the central portion of the deformable membrane constantly moving up and down over the hub 62.
  • the slot 50 and the hub 62 of the irrigator 1 may be designed such that in a working condition there is first deformation of the working portion 36 of the deformable membrane, causing opening of the slot 50 and only thereafter lowering of the central portion of the deformable membrane 30 to contact the hub 62.
  • they may be designed such that there is first deformation of the central portion of the deformable membrane, causing it to contact the hub 62, only thereafter deformation of the working portion 36 of the deformable membrane 30 to open the passage.
  • the outlet member 20 is formed with a tubular extension
  • a fluid dispersion member 70 adapted for dispersing the irrigation fluid emitted from the inlet chamber 3b. More particularly, it is adapted for dispersing the directional fluid jet emitted from the outlet chamber 3b, in order to provide for a larger irrigation area.
  • the dispersion member 70 is formed as a bridge 72 extending along a longitudinal axis L, so as to obstruct the jet emitted from the outlet hole 24 and is formed of two portions 74 having a gap 76 therebetween, such that a central portion 78 of the bridge 72 is elevated from the outlet hole 24.
  • irrigation fluid is forced though the hub towards the outlet hole 24, causing it to be emitted therefrom in the form of a directional jet (not shown).
  • the directional jet impacts the central portion 78 of the bridge 72, causing it to disperse, such that the irrigation fluid flows in a dispersed manner through the gap 76 on both sides of the bridge 72 and thereafter is emitted from the irrigator.
  • Such a design allows, among other things, for greater dispersion of irrigation fluid across a wider irrigation area.
  • FIG. 6 to 7C an irrigation pipe generally designated P is shown fitted therein with an irrigator, generally designated 100.
  • the irrigator 100 comprises an inlet member 110, an outlet member 120 and a deformable membrane 130 located between the inlet member 110 and the outlet member 120.
  • the inlet member 110 is in the form of a rectangular shell 112 having defining a cavity 114.
  • the shell 112 has a face 114a on the inlet side thereof and is open at the outlet side thereof 114b.
  • the inlet face 114a is formed with a plurality of openings 113 adapted for passage of the irrigation fluid therethrough into the cavity 114.
  • the shell 112 of the inlet member 110 is further formed with two snap openings 115 adapted to receive corresponding snap members 125 of the outlet member 120, for securing the inlet member 110 and the outlet member 120 to one another by snap engagement.
  • the shell 112 has also, formed on the inner side of the cavity 114 rim 117 extending along a portion of the circumference of the shell 112, the rim having a securing portion 118 adapted to secure the deformable membrane 130 as shown in Fig. 8.
  • the outlet member 120 is shown comprising a body 122 of generally rectangular shape and having a base surface 128 and side walls 142 defining an inner volume V.
  • the top edge 144 of the side walls 142 constitutes a seat 140 of the outlet member 120, adapted for positioning thereon the deformable membrane 130.
  • the outlet member 120 is also formed with two snap members 125 extending from opposing sides of the body 122, and adapted for snap engagement with corresponding snap openings formed in the inlet member 110.
  • the arrangement is such that when the inlet member 110 and the outlet member 120 are secured to one another by the snap engagement, the deformable membrane located between the members 110, 120 is firmly secured between the rim 118 of the inlet member 110 and the seat 140 of the outlet member 120, however, in a manner allowing the deformable membrane to deform as described with respect to Figs. 4A to 4C.
  • the outlet member is formed with a flow control arrangement 150 and an emitting arrangement 160, which are generally similar to the ones of irrigator 1, and will therefore not be described in detail herein.
  • the irrigator 100 is adapted to be fitted within the irrigation pipe P, at a location juxtaposed with an irrigation hole H of the pipe P. Under such an arrangement, irrigation fluid flowing through the pipe P, is forced into the openings 113 of the inlet member 110, which under a sufficient pressure difference, may deform the membrane 130 and flow to the inlet member 120 and from there to the irrigation hole H, as shown in Fig. 4B. Attachment of the irrigator 100 to the pipe P may be achieved by welding.
  • the irrigation pipe P is shown fitted with an irrigator generally designated 200.
  • the irrigator 200 is a modification of the irrigator 100, and comprises an inlet member 210, and outlet member 220 and a deformable membrane 230.
  • the outlet member 220 is formed with a removable outlet tip 226 adapted for penetrating the wall of the pipe P or be inserted through an irrigation hole H of the irrigation pipe P.
  • the arrangement is such that the irrigator 200 is positioned within the pipe such that the outlet tip 226 protrudes outwardly from the pipe P. Thereafter, once the irrigator 200 is secured to the inside of the irrigation pipe P, the outlet tip 226 may be removed, for example by cutting it off (shaving) by a sharp instrument, thereby exposing the outlet channel 224.

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Cette invention concerne un système d'irrigation par goutte à goutte (1) comprenant un boîtier formé d'une enceinte, d'un port d'entrée des fluides (10) et d'un port de sortie des fluides (20) et une membrane déformable (30). La membrane est placée dans le boîtier et divise l'enceinte en une chambre d'entrée (30) et une chambre de sortie (36). La chambre de sortie comprend une surface de base (28) et une paroi périphérique (42) dotée d'un support surélevé pour membrane (40). Au moins une partie de la paroi périphérique comporte une pente (52a, 52b) entre le support pour membrane et la surface de base. La pente comporte une fente sur sa longueur qui est dotée de deux parties (54a, 54b), la fente facilitant la communication fluidique entre la chambre d'entrée et la chambre de sortie. La membrane est placée sur le support pour membrane et peut se déplacer par déformation au moins sur la pente. La membrane est conçue pour adopter une première position dans laquelle elle se déforme jusqu'à un certain point, vient au contact d'une première partie (52a) de la pente, et une seconde position dans laquelle elle se déforme jusqu'à un autre point, plus loin que le premier point, vient au contact d'une seconde partie (52b) de la pente, ce qui permet d'obtenir deux différents régimes d'écoulement de travail.
PCT/IL2010/000851 2009-10-29 2010-10-18 Système d'irrigation par goutte à goutte et mécanisme associé de résistance à l'écoulement WO2011051933A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25602709P 2009-10-29 2009-10-29
US61/256,027 2009-10-29

Publications (1)

Publication Number Publication Date
WO2011051933A1 true WO2011051933A1 (fr) 2011-05-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014097612A1 (fr) * 2012-12-17 2014-06-26 株式会社エンプラス Goutteur pour irrigation goutte à goutte et dispositif d'irrigation goutte à goutte équipé de celui-ci
WO2015044801A1 (fr) * 2013-09-25 2015-04-02 Netafim Ltd Émetteur de goutte-à-goutte
NL2032760A (en) * 2021-08-18 2023-02-27 Inst Of Water Resources For Pastoral Area Mwr Irrigator for spraying and dripping

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002828A1 (fr) * 1983-01-19 1984-08-02 Ris Irrigation Syst Dispositif d'alimentation a egouttement regule par la pression
ES2229889A1 (es) * 2003-04-11 2005-04-16 Comercial Agricola De Riegos, S.L. Mini-emisor de riego localizado autocompensante y autolimpiante para pinchar en tuberia.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002828A1 (fr) * 1983-01-19 1984-08-02 Ris Irrigation Syst Dispositif d'alimentation a egouttement regule par la pression
ES2229889A1 (es) * 2003-04-11 2005-04-16 Comercial Agricola De Riegos, S.L. Mini-emisor de riego localizado autocompensante y autolimpiante para pinchar en tuberia.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014097612A1 (fr) * 2012-12-17 2014-06-26 株式会社エンプラス Goutteur pour irrigation goutte à goutte et dispositif d'irrigation goutte à goutte équipé de celui-ci
US9439366B2 (en) 2012-12-17 2016-09-13 Enplas Corporation Dripper for drip irrigation, and drip-irrigation device provided with same
JPWO2014097612A1 (ja) * 2012-12-17 2017-01-12 株式会社エンプラス 点滴灌漑用ドリッパおよびこれを備えた点滴灌漑装置
WO2015044801A1 (fr) * 2013-09-25 2015-04-02 Netafim Ltd Émetteur de goutte-à-goutte
CN105578872A (zh) * 2013-09-25 2016-05-11 内塔芬有限公司 滴灌灌水器
US10172302B2 (en) 2013-09-25 2019-01-08 Netafim, Ltd. Drip emitter
CN105578872B (zh) * 2013-09-25 2020-02-14 耐特菲姆有限公司 滴灌灌水器
NL2032760A (en) * 2021-08-18 2023-02-27 Inst Of Water Resources For Pastoral Area Mwr Irrigator for spraying and dripping

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