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WO2008015674A2 - Goutteur pour irrigation par égouttage - Google Patents

Goutteur pour irrigation par égouttage Download PDF

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Publication number
WO2008015674A2
WO2008015674A2 PCT/IL2007/000958 IL2007000958W WO2008015674A2 WO 2008015674 A2 WO2008015674 A2 WO 2008015674A2 IL 2007000958 W IL2007000958 W IL 2007000958W WO 2008015674 A2 WO2008015674 A2 WO 2008015674A2
Authority
WO
WIPO (PCT)
Prior art keywords
drip
vessel
water
irrigation
emitter
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.)
Ceased
Application number
PCT/IL2007/000958
Other languages
English (en)
Other versions
WO2008015674A3 (fr
Inventor
Itzhak Agadli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2008015674A2 publication Critical patent/WO2008015674A2/fr
Publication of WO2008015674A3 publication Critical patent/WO2008015674A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

  • the present invention relates to porous irrigation emitting units used in drip irrigation systems.
  • drip or trickle irrigation is a widely used method of distributing water directly to roots of plants or trees at a slow rate, without substantial surface run off of the water, and with minimal evaporation of the irrigation water.
  • the water distribution lines include emitters having extremely small orifices therein. As the soil surround the emitters becomes saturated an increase in hydraulic pressure is required for water discharge. In order to substantially increase the efficiency of the irrigation system, typically water at a pressure of 3 /4 atmospheres is provided to the distribution lines.
  • the customary irrigation-emitter is composed of a water-conduit labyrinth or another mechanism that reduces the water pressure of the distribution lines to a relatively low pressure that enables a slow discharge of water to the soil. As the moisture increases the pressure required for continued discharge increases and the water flow reduced until no further flow is obtained. To overcome blockage it is customary to irrigate in pulses rather than continuously so as to allow the soil surround the emitters to partially dry.
  • the requirement of hydraulic pressure and pulse irrigation dictate the necessity of pressure pumps and computerized control systems, thus making drip irrigation systems expensive and relatively complicated to operate.
  • An object of the present invention is to provide a relatively low cost drip emitter device.
  • Another object of the present invention is to provide such a drip emitter device that is simple to produce, resistant to clogging by contamination, easy to deploy and to operate, and facilitates continuous irrigation.
  • a dripping irrigation-emitter composed and constructed of a porous material, a construction that enables the containment of water and having the characteristics to have the water pass through the porous material from the construction to its surrounding.
  • the emitter being composed of porous ceramic material, porous clay material, porous glass material or porous plastic material.
  • a drip-irrigation emitter device comprising:
  • a porous vessel having at least an inlet for fluidical connection to a water supply pipe at a given supply pressure level so as to have the water pass through the pores from within the vessel to its surroundings at substantially similar pressure level.
  • the vessel is made from materials selected from a group of materials consisting of ceramic, clay, glass.
  • the device is further provided with an outlet, for serial connection to the water supply line.
  • the device is formed in a tubular shape. [0016] Furthermore, in accordance with some preferred embodiments of the present invention, the device has a cross section of peaks and troughs.
  • a drip-irrigation system comprising a plurality of drip-irrigation emitter devices the emitter devices each comprising a porous vessel having at least an inlet for fluidical connection to a water supply pipe at a given supply pressure level so as to have the water pass through the pores from within the vessel to its surroundings at substantially similar pressure level.
  • a method for producing a porous drip-irrigation emitter device comprising:
  • FIG. 1 is a schematic illustration of the external view of a porous irrigation-emitter in accordance with a preferred embodiment of the present invention.
  • FIG. 2 is a schematic illustration of the internal view of a porous irrigation-emitter shown in Fig. 1 DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • the present invention is directed at a porous irrigation-emitter that differs from the technology of "injecting" water to the soil by a pressure gradient from the distribution lines through labyrinths of the irrigation-emitter.
  • the emitter of the present invention is a construction having a relatively large surface area with walls being porous so as to allow the irrigation water to passively seep through the walls into the soil in osmosis.
  • the seeping from the porous walls of the emitter becomes a continuous trickle until the level of saturation equals that of the saturation level of the emitter, in accordance to the volume of water that the surrounding soil is capable of absorbing during lengthy time intervals.
  • the use of the irrigation-emitter of the present invention enables continuous water out- flow at a very slow rate (can reach a typical rate of less than 3-4 liters per hour for extended periods of time).
  • the slow, continuous trickle enables the utilization of irrigation water more efficiently and by so doing increases the yield of crops.
  • the emitter effectively serves as a filter, for it allows only water to trickle out of the device.
  • the irrigation-emitter of the present invention enables the operation of a drip irrigation system independent of the availability of an electrical supply and the reliance on pressure pumps and computerized controlling systems, thus making its use beneficiary in developed as well as in under-developed countries and locations.
  • a drip-irrigation emitter in accordance with a preferred embodiment of the present invention comprises a vessel made of porous walls embedded in the soil at predetermined locations near roots of plantations, and fluidically connected to a water source.
  • the wall (or walls) of the vessel comprise vacuoles - voids in the wall material - that are distributed substantially homogenously throughout the wall and allow laminar flow of water from within the vessel to the outside into the surrounding soil in osmosis.
  • the material from which the vessel is selected permits laminar flow between the voids.
  • the drip-irrigation emitter of the present invention is preferably serially connected, having an inlet for receiving water from an adjacent pipe and an outlet for forwarding water to the next emitter.
  • a drip irrigation emitter comprises a single inlet fluidically connected to a water supply pipe that serves for water supply into the emitter whereas excessive water flows through the pipe to the next emitter.
  • a drip irrigation system according to a preferred embodiment of the present invention may include both types of emitters.
  • An irrigation-emitter is constructed of ceramic material, but other materials may also be used for the construction of the emitter.
  • FIG. 1 is a schematic illustration of the external view of a porous irrigation-emitter in accordance with a preferred embodiment of the present invention.
  • the emitter shown in Fig. 1 (and Fig. 2) comprises a hollow circular symmetrical and elongated tube 10, with an imaginary axis 50.
  • the tube is constructed with a series of depressions forming apexes 50 and troughs 60 along the tube 10.
  • the apexes and troughs along the tube form two symmetrical and opposite waves along the axis 50 when a cross cut of the tube is observed, as shown in Figure 2.
  • the outer surface of the emitter 30 has typically the same porous characteristics as the internal surface 40.
  • the porous wall of the emitter 70 is substantially homogenous and has, for most irrigation purposes, a thickness of 6 to 10 millimeters (without limiting the scope of the present invention to other dimensions that are possible too).
  • Fig. 2 is a schematic illustration of the internal view of a porous irrigation-emitter shown in Fig. 1.
  • the irrigation-emitter is composed of porous clay.
  • the irrigation-emitter is composed of porous glass.
  • the drip irrigation emitter of the present invention is preferably used in connection with a passive water supply that depends solely or at least mainly on gravitation-induced water pressure. As water fills the emitters the gravitational pressure forces water to seep through the pores at a very slow rate. This can actually be described as "perspiration" of water from the emitter.
  • One alternative method of producing a porous emitter comprises mixing of clay with saw dust particles or other organic particles, or polymer grains hardening the clay in the form of a vessel of desired shape and eliminating the saw-dust (or other organic material or polymer grains) particles by exposing the hardened clay to extreme temperatures (typically in an oven) thus burning out the particles, leaving vacuoles in the walls of the formed vessel, through which water slowly passes (in osmosis).

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Cultivation Of Plants (AREA)
  • Nozzles (AREA)

Abstract

Goutteur pour irrigation par égouttage constitué et construit d'un matériau poreux, ayant une construction qui permet la retenue de l'eau et des caractéristiques qui permettent le passage de l'eau à travers le matériau poreux, depuis la construction vers son environnement.
PCT/IL2007/000958 2006-08-01 2007-07-31 Goutteur pour irrigation par égouttage Ceased WO2008015674A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL177202 2006-08-01
IL177202A IL177202A0 (en) 2006-08-01 2006-08-01 Drip-irrigation emitter device

Publications (2)

Publication Number Publication Date
WO2008015674A2 true WO2008015674A2 (fr) 2008-02-07
WO2008015674A3 WO2008015674A3 (fr) 2008-03-20

Family

ID=38863116

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2007/000958 Ceased WO2008015674A2 (fr) 2006-08-01 2007-07-31 Goutteur pour irrigation par égouttage

Country Status (2)

Country Link
IL (1) IL177202A0 (fr)
WO (1) WO2008015674A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2449335A (en) * 2007-04-24 2008-11-19 H2Optiflow Ltd Biodegradable irrigation device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7708697L (sv) * 1977-07-28 1979-01-29 Jufors Bo Metod a konstbevattning
IL55712A0 (en) * 1977-10-19 1978-12-17 World Seiko Kk Method and system for underground irrigation
AU3149784A (en) * 1983-08-06 1985-02-07 Jesus Martinez Guerrero Method and apparatus for natural fertilization and irrigation of plants
GB8321274D0 (en) * 1983-08-06 1983-09-07 Martinez Urrea E Plant irrigation
US5069388A (en) * 1990-03-12 1991-12-03 Aquapore Moisture Systems Porous pipe landscape system
EP1621072A1 (fr) * 2004-07-29 2006-02-01 Mara Fregnani Reservoir pour l'arrosage par dispersion d'eau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2449335A (en) * 2007-04-24 2008-11-19 H2Optiflow Ltd Biodegradable irrigation device
GB2449335B (en) * 2007-04-24 2009-05-27 H2Optiflow Ltd An irrigation device

Also Published As

Publication number Publication date
IL177202A0 (en) 2006-12-10
WO2008015674A3 (fr) 2008-03-20

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