• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    a drip irrigation emitter (10) includes first and second members (12, 14) and a deformable membrane (32). the membrane is located between the members and pins (22) that are located on the first member are received inside holes (21) formed in the second member. end portions of the pins protruding out of the holes are deformed and thereby press the first and second members together and compress the membrane.
    公开号:BR112016004810B1
    申请号:R112016004810
    申请日:2014-07-26
    公开日:2020-02-04
    发明作者:Keren Ron
    申请人:Netafim Ltd；
    IPC主号:
    专利说明:

    “DRIP IRRIGATION PUMP AND PIPE AND METHOD TO PRODUCE A DRIP IRRIGATION PUMP”
    TECHNICAL FIELD [001] Modalities of the invention refer to drip irrigation emitters and methods for forming such drip irrigation emitters.
    FUNDAMENTALS [002] Drip irrigation emitters can be formed from several parts, such as an external housing formed e.g. from two members. Drip irrigation emitters typically have an inlet through which water seeping into the pipe can enter the emitter and an outlet through which water that has entered the emitter can escape into the outside environment. The emitter diverts a relatively small amount of water seeping into the tube and discharges the diverted water to irrigate plants in a vicinity to the emitter's location.
    [003] To control the rate at which water is discharged by the emitter, the emitter typically includes a flow restriction path that functions as a pressure reduction channel and is usually referred to as a "labyrinth channel" or "labyrinth. Through the flow restriction path, the water entering the emitter must drain to reach the outlet of the emitter. The flow restriction path is a high strength flow channel along which the water pressure flowing through the emitter drops relatively quickly with the distance along the path. The pressure drop is from a relatively high water pressure at the emitter inlet, to a relatively low discharge pressure, usually a gauge pressure equal to approximately zero, substantially at or near the emitter outlet.
    [004] Drip emitters may also include a portion
    Petition 870160007648, of 03/03/2016, p. 18/51 / 18 resiliently flexible often referred to as a membrane or diaphragm that can operate eg, control the rate of liquid flowing out of the emitter, so that it is substantially independent of the inlet pressure for a pressure range typically found in applications irrigation that can be equal to a flow between about 0.4 and 12 liters per hour (l / h). The membrane is usually located between the entrance and the exit and it can contain on one side water that enters the emitter entrance to pass through the labyrinth and on the other side water that has already passed through the labyrinth and reached a pressure regulating chamber that in some cases is located adjacent to the output sender. The pressure regulating chamber located adjacent to an emitter outlet, typically has a wider cross section than the maze discharging into it, in order to provide for better pressure regulating performance for the emitter. The membrane in response to the increase in pressure of the incoming water can flex into the pressure regulating chamber to restrict the flow of water leaving the outlet and therefore act to control the rate of liquid flowing out of the emitter.
    [005] US6250571 shows a drip emitter that is adapted to be connected to an internal surface of a water supply pipe. The emitter has an elongated body and cover members and a membrane that is located between them. The cover is jointly formed with four pins that pass through holes formed in the body member and protrude out of the holes to connect to the inner surface of the water supply tube. The pins are located on opposite longitudinal sides of the membrane and by connecting to the water supply tube they secure the membrane between the body and cover members.
    [006] US4060200 shows another drip emitter that is formed from a first and a second component with a strip interposed between them. The first component is formed with pins that
    Petition 870160007648, of 03/03/2016, p. 19/51 / 18 extend through openings in the strip into appropriate openings in the second component. The two assembled components become fixed by pressing each other with the strip forming a dividing wall that helps to define the flow path in both components.
    SUMMARY [007] The following modalities and aspects of them are described and illustrated together with systems, tools and methods that are intended to be exemplary and illustrative and not limiting in scope.
    [008] Aspects of the present invention relate to a drip irrigation emitter and a method of forming a drip irrigation emitter and a drip irrigation tube including the emitter.
    [009] The emitter in one embodiment can comprise first and second members and a deformable membrane. In one embodiment, the first and second members may constitute an issuer's housing and in some embodiments, the issuer may include additional members in and / or within the housing. Each of the first and second members can comprise internal and external sides, facing inward and outward of the emitter respectively and the membrane can comprise two flanks and a membrane periphery that joins the flanks. The membrane when placed on the emitter can cover with one of its flanks at least a portion of the inner side of the first member and the inner side of the second member can cover at least a portion of the other flank of the membrane while also facing the inner side of the first member. Preferably, a fluid flow restriction path of the emitter formed on at least one of the inner sides of the first and / or the second member can be covered by the membrane and in contact with that portion of the membrane in an assembled state of the emitter.
    [0010] The first member may comprise a plurality of pins, preferably projecting from the inside of the first
    Petition 870160007648, of 03/03/2016, p. 20/51 / 18 member, which pass to be received inside holes formed in the second member and the holes can extend through the second member to open open outwards on its internal and external sides. The pins, which in some embodiments pass proximal to the membrane periphery, comprise end portions projecting out of the holes that are deformed to form deformed segments that rest against the outside of the second member. These deformations cause and / or maintain a force that presses or holds the first and second members towards each other while compressing the membrane between them.
    [0011] In one embodiment, an emitter inlet preferably in the form of a filter can be formed through the member comprising the holes, here optionally the second member. The deformed segments of the pins thus can be located in this embodiment on one side where the entrance opens outward from the emitter (e.g. into a tube where the emitter can be located during use) and consequently be visible from this side. In one aspect of the present invention, the provision of the deformed segments of the pins on the external side of the entrance leaves the other side of the emitter lacking visible structures acting to fix the two members of the emitter together (such as holes and deformed segments) that can deform. rest if present on this side interfere eg with the connection of the emitter to a pipe.
    [0012] In one embodiment, each of the first and second members has an elongated shape and the fluid flow restriction path extends longitudinally between two terminal ends. One end of the end may constitute an entrance to the path for liquid at a relatively high pressure and the other end may constitute an outlet where the liquid discharges out of the path at a relatively low pressure.
    [0013] In one mode, at least one pin is located
    Petition 870160007648, of 03/03/2016, p. 21/51 / 18 adjacent to each of: the first terminal end, the second terminal end and at least one location between the two terminal ends. The preferable location of the pins along the path provides an aspect of the present invention of providing fastening means, which act to fix forming members of the outer housing of the emitter to one another, at locations along the path. Preferably pins can also be placed along opposite sides (i.e., side sides) of the path. The location of the pins on opposite sides of the path can, in some modalities, where the path eg extends along a longitudinal geometric axis, be defined by locating pairs of pins along the geometric axis with one pin of each pair being in one side and the other pin on the other side of the geometry axis.
    [0014] One aspect of the present invention also relates to modalities of forming a membrane with strangulation and head segments along the longitudinal direction of the membrane. Possibly only one strangulation segment and one head segment can be glimpsed, although other combinations may also be possible. A difference between a choke segment and a head segment can be defined by a width of the choke segment measured between opposite side sides of its periphery being less than a corresponding width of the head segment.
    [0015] The provision of the wider head segment may in some embodiments be to cover a recess formed on one of the internal sides of the emitter, which recess, when covered by such a deformable membrane, can be used as a pressure regulating chamber of the issuer. Pressure regulating chambers may be required to have a greater lateral width than e.g. a lateral width of a pressure reducing path leading into them, in order to provide better pressure regulating performance. This larger dimension
    Petition 870160007648, of 03/03/2016, p. 22/51 / 18 for a head segment may be to adjust a dimension of the membrane to cover the recess of the regulating chamber.
    [0016] The choke segment can be kept narrower to cover at least portions of the laterally narrower pressure reduction flow paths. The lateral width of the choke segment can be defined to cover the flow path sufficiently to seal the flow path from above when pressed against it. Possibly, sufficient coverage of the flow path (in a lateral direction of the flow path) can be up to (and possibly slightly beyond) an elevated face (or crest or rim) that can limit and / or define the lateral sides of the flow path. flow path.
    [0017] By providing narrower (choke) segments to a membrane, pins provided on one of the emitter members can pass proximal to a lateral side of the flow path, although not penetrating the membrane, to improve the sealing of the flow path. flow that maintains relatively higher pressures of liquid while using the emitter. By the provision of the choke segment, an emitter modality may have a narrower external lateral cross-section profile since pins can be positioned closer to the fluid flow restriction path. In some embodiments, instead of being provided with a choke segment, the membrane may be formed with openings penetrating through it to allow the pins adjacent to the flow path to pass.
    [0018] One aspect of the present invention also relates largely to a drip irrigation emitter of the type comprising an axially extending fluid flow restriction path that discharges into a recess. The recess can be wider in a lateral outward direction from the geometric axis in order to provide better pressure regulation capabilities and a modality
    Petition 870160007648, of 03/03/2016, p. 23/51 / 18 of a membrane may correspond to be formed with a narrower side portion covering the flow path and a wider side portion covering the recess.
    [0019] In addition to the exemplary aspects and modalities described above, other aspects and modalities will become apparent by reference to the figures and by studying the following detailed descriptions.
    BRIEF DESCRIPTION OF THE FIGURES [0020] Exemplary modalities are illustrated in the referenced figures. It is intended that the modalities and figures described here should be considered illustrative and not restrictive. The invention, however, both in organization and in method of operation, together with its objectives, characteristics and advantages, can be better understood by reference to the following detailed description when dealing with the attached figures, in which:
    Fig. 1A schematically shows a perspective view of a drip irrigation emitter having a base on the near side and a cover on the remote side, according to an embodiment of the present invention;
    Fig. 1B schematically shows a perspective view of the drip irrigation emitter of Fig. 1 with the cover oriented on the near side and the base on the remote side, according to an embodiment of the present invention;
    Fig. 2 schematically shows an exploded view of an emitter modality;
    Fig. 3A schematically shows a perspective view of an internal side of the base, according to an embodiment of the present invention;
    Fig. 3B schematically shows a perspective view of the inner side of the base seen in Fig. 3A being covered by a membrane
    Petition 870160007648, of 03/03/2016, p. 24/51 / 18 of a flexible resilient emitter, according to an embodiment of the present invention.
    Fig. 3C schematically shows a perspective view of the base and membrane seen in Fig. 3B being covered by the cover, according to an embodiment of the present invention.
    Figs. 4A and 4B schematically show cross-sections taken along the plane IV-IV marked in Fig. 3C during different stages of formation of the emitter;
    Figs. 5A and 5B show schematically top views of the base and membrane modalities, with the membrane being indicated only by external lines to reveal parts of the inner side of the base that are covered. [0021] It will be appreciated that for simplicity and clarity of illustration, the elements shown in the figures were not necessarily drawn to scale. For example, the dimensions of some of the elements can be exaggerated in relation to other elements for clarity. Furthermore, when considered appropriate, reference numbers can be repeated within the figures to indicate identical elements.
    DETAILED DESCRIPTION [0022] Attention is first directed to Figs. 1A and 1B showing a drip irrigation emitter 10, according to an embodiment of the present invention. The emitter 10 has a housing that can be formed from two members, here a base 12 and a cover 14. An inlet 16 of the emitter can be formed in the cover 14 and can take an optional shape of a filter and an outlet 18 of the emitter can be formed on base 12 so that liquid entering the emitter via the inlet can leave the emitter. The emitter 10 can also include a peripheral wall 20, formed here on the base, where the emitter can optionally be fixed by heat connection to an internal face of an irrigation pipe 13 (of which a wall is partially seen indicated by lines dashes in Fig. 4B). How
    Petition 870160007648, of 03/03/2016, p. 25/51 / 18 also seen in these figures, the base 12 and the cover 14 of the emitter 10 are attached (or fixed) to each other by pins (or pins) 22, where here only end portions of the pins can be seen in one deformed rivet state.
    [0023] The base 12 and the cover 14 of the emitter 10 both optionally have an elongated shape and each one between the base 12 and the cover 14 has an internal side where it faces towards the inside of the emitter and an opposite external side where it it faces away from the emitter. In Figs. 1A and 1B the outer sides of the base and cover are visible together with portions of their peripheral sides. It should be noted that directional terms that may appear throughout the entire specification and claims, eg longitudinal, “front”, rear, up, down etc., (and derivatives thereof) are for illustrative purposes only and are not intended to limit the scope of the attached claims. In addition, it is noted that the directional terms per low, below and bottom (and derivatives thereof) define identical directions and that the lateral and longitudinal directions when used here may refer to directions orthogonal to each other.
    [0024] Attention is directed to Fig. 2 showing an exploded view of an emitter modality 10 revealing, inter alia, an optional longitudinal deformable membrane 32 of the emitter 10 that can be interposed between the base and the cover. The membrane 32, which can be formed from a thermoset elastomeric material such as silicone, EPDM or the like; it can have two flanks 34 (here only the one on the side being fully visible) and a membrane periphery 36 that joins the flanks. Optionally the flanks are flat and possibly also parallel to each other. In one embodiment, the membrane 32 along its longitudinal direction can be formed of two head segments 38 and an intermediate choke segment 40, with the head segments 38 being
    Petition 870160007648, of 03/03/2016, p. 26/51 / 18 preferably symmetrically arranged on both sides of the throttle segment 40 to simplify the assembly of the membrane 32 in one embodiment of the emitter 10. In other embodiments, the membrane 32 can take other shapes such as a possible T-shape (not shown) where it can include only a single head segment 38 and only a single adjacent bottleneck segment 40.
    [0025] In diaphragm modalities 32 including head and choke segments, a lateral width W1 of a choke segment measured between opposite side sides of the membrane periphery 36 may be less than a corresponding lateral width W2 of a head segment. Possibly, a W1 / W2 ratio may be between about 0.8 and 0.3 and preferably between about 0.7 and 0.5. In still other embodiments, the membrane 32 may not include a throttling segment 40 and along its longitudinal direction it may optionally have a substantially constant width between opposite side sides of its membrane periphery 36. An example of such a membrane modality may be seen in Fig. 5B which will be discussed below.
    [0026] The base 12 as seen in this figure, can be formed with pins 22 (here eight pins) protruding from its internal side. The pins in the modalities shown here can have a substantially cylindrical body with a substantially circular profile in a cross section taken perpendicular to the direction of projection. However, in other modalities (not shown) the pins may have other bodies and may have other profiles in cross section such as oval, polygonal, elliptical, rectangular and others. The base 12 can be formed on its inner side with a flow restriction path 24 and a recess 26 both of which open outwardly from the inner side on a face 27 which is raised above adjacent to side portions of the inner side outside the path and recess. Flow path 24 can possibly be
    Petition 870160007648, of 03/03/2016, p. 27/51 / 18 extend longitudinally along a geometric axis X between two terminal ends, one constituting a beginning 28 where liquid flowing through the emitter can enter the flow path and the other constituting an end 30 where liquid can be discharged outwards the flow path starts within the recess 26.
    [0027] The flow path 24 that functions in a state formed from an emitter modality 10 (ie, when sealed tightly by the membrane 32) as a pressure reduction channel (ie, labyrinth), can include a plurality of groups of oppositely arranged teeth that prevent and optionally introduce turbulence in the liquid flow. The pressure of the liquid at the beginning 28 can be substantially equal to the pressure of the liquid in the tube in which the emitter 10 is installed and the pressure of the liquid at the end 30 can be substantially lower than at the beginning 28. The recess 26 that works in a formed state of an emitter modality 10 as a pressure regulating chamber preferably has a greater lateral width along the inner base side 12 than the flow path 24 in order to provide better pressure regulating performance in an emitter modality 10. The outlet 18 that extends through the base 12 opens into the recess 26 on the inner side of the base and communicates between the recess and the outside of the emitter.
    [0028] In the mode shown, three pairs of pins 22 can be located along the flow path 24 with possibly one pin of each pair being located on one side and the other pin on the other side of the X axis and with both pins preferably located adjacent to the opposite side of the flow path. A first pair of pins can be located adjacent to the start 28, a second pair of pins adjacent to the end 30 and a third median pair of pins22 can be located between the start and end of the flow path 24. In the mode shown, a fourth pair of pins 22 can be located on a recess side 26 which is opposite
    Petition 870160007648, of 03/03/2016, p. 28/51 / 18 to the side where the flow path 24 discharges into the recess 26. In this fourth pair of pins, similarly, one pin of the pair can be located on one side and the other pin on the other side of an extension of the X axis It is noted that more or less pins may be present in different embodiments of the present invention.
    [0029] The cover 14 as also seen in this figure, can be formed with a plurality of cavities 23 on its external side and a plurality of through holes 21. As best seen in the enlarged circled section of Fig. 2, each hole 21 extends if from the inside of the cover to open on a support face facing outwards 25 into a respective cavity 23 on the outside of the cover. Each hole 21 can have a profile in a cross section taken perpendicular to the direction of extension, which substantially corresponds to a profile of a pin with which it can be adapted to interact. In the embodiments shown here, the holes have a substantially circular profile in cross section.
    [0030] Attention is now directed to Figs. 3A to 3C to show optional steps that can be performed when forming (i.e., assembling and / or producing) an emitter 10 according to an embodiment of the present invention. In a first possible step seen in Fig. 3A, the base 12 can be placed with its inner side revealed and optionally facing upwards. In a second possible step seen in Fig. 3B, the membrane 32 can be placed covering the inner side of base 12 (in particular the flow path and recess on the inner side) with one of its flanks 34. Preferably in this position, the start 28 of the flow path is left uncovered.
    [0031] With additional attention directed to Fig. 5A where only the outer edge lines of the membrane periphery 36 are indicated, it can be seen that in a mode of the emitter 10 one of the head segment 38 can cover the inner side of the base 12 along a stretched area between pins 22 adjacent to start 28 and median pins 22. The
    Petition 870160007648, of 03/03/2016, p. 29/51 / 18 bottleneck 40 can then be extended thereafter to the pins adjacent to the end 30 of the flow path and the other head segment can be extended thereafter to cover the recess 26 and form together with recess 26 a pressure regulating chamber of the emitter. In embodiments, where the membrane 32 can be T-shaped, the single strangulation segment 40 may extend entirely from adjacent to the beginning 28 to the end 30 of the flow path 24 and the single head segment 38 may extend on recess 26.
    [0032] Also in Fig. 5A the dashed lines are marked imaginary lines that extend parallel to the fluid flow restriction path from opposite external side (or extremes) of the recess 26. In one embodiment of the present invention, these marked dashed lines can assist in defining the proximal position that the pins can have along the lateral sides of the flow path 24, since as seen all pins and in particular the pins adjacent to the end 30 and the middle pins 22 are located proximal flow path 24 at locations between these imaginary lines and the fluid flow restriction path.
    [0033] With attention directed to Fig. 5B, an emitter modality 10 can be seen including a membrane called constant width 32, with only the edge lines of the membrane periphery 36 being indicated. In this embodiment, the membrane 32 can include openings 33 penetrating the membrane through which the “middle” pins 22 and the pins adjacent to the end 30 can pass as they protrude above the inner side of the base 12, while at the same time passing adjacent proximally to the membrane periphery on an inner side of the periphery 36.
    [0034] With attention again directed to Fig. 3B, a partial formed state of the emitter 10 can be seen, with a membrane modality 32 that includes two head segments and a choke segment.
    Petition 870160007648, of 03/03/2016, p. 30/51 / 18
    In this embodiment, the membrane 32 covers the inner side of the base 12, with the pins protruding above the inner side of the base 12 passing proximal to its membrane periphery 36. Also as seen, eg, in this figure or Fig. 5A, by provision of the throttling segment 40 two pairs of pins 22 (ie, the “middle” pins and the pins adjacent to the end 30) can be located in proximal positions along the lateral sides of the flow path 24 immediately outside the membrane periphery without penetrate the membrane 32. [0035] In a third possible step seen in Fig. 3C, the cover 14 can be aligned with the base 12, so that each pin 22 of the base is aligned with a respective hole 21 of the cover. Then, when pushing the cover or the base (or both) towards each other, each pin 22 can be received in its respective hole 21, first entering the hole on the inside of the cover and then projecting out of the hole in an end portion into a respective cavity 23 on the outside of the cover.
    [0036] Attention is now directed to Fig. 4A showing a cross-sectional view of the emitter 10 as seen after completing the step seen in Fig. 3C and along the plane IV-IV marked in Fig. 3C. As seen in this figure, the cover 14 and the base 12 are aligned in this step with each pin 22 being received in its respective hole 21 and with an end portion of each pin 22 being located in a respective cavity 23.
    [0037] After completing this step, the base 12 can be temporarily retained fixed to the cover 14 with the membrane 32 interposed between them by eg an external means (not shown) that holds these members / parts together and / or by pressure fitting (interference fit) that can be formed between pins 22 and holes 21 (ie dimensions of profiles, eg diameters, of at least some pins 22 are slightly exaggerated so that they can be retained by friction in slightly undersized profiles, eg diameters , respective holes 21). In this temporary fixation, the membrane 32
    Petition 870160007648, of 03/03/2016, p. 31/51 / 18 can be either loose or exposed to various levels of compression between the base 12 and the cover 14. The membrane as seen in Fig. 4B can schematically represent a compressed condition of the membrane 32 when the base 12 and the cover 14 are temporarily attached to each other.
    [0038] With attention directed to Fig. 4B a possible final step of forming an emitter according to the present invention will be discussed. In this possible final step, the pins are deformed in their end portions to assume, optionally, a deformed shape like a rivet where each deformed portion of the pin rests downwardly against the supporting face 25 of its respective cavity 23. These deformations formed in the pins can essentially shorten the pins and thus push the cover and base to be pressed together and consequently compress the membrane that is interposed between them, while permanently fixing the connection between base 12 and cover 14. In one embodiment, where at the end of the previous step (ie, after assuming the temporary connection), the membrane 32 is already compressed between the base and the cover, the step of deforming the pins can be seen as simply permanently fixing the compressed state of the membrane between the cover and the base.
    [0039] The deformation of the end portions of the pins 22 can be formed by different methods and ways according to various embodiments of the present invention.
    [0040] In one example, the pins can be punched by eg a hammer, punch (or similar) so that the end portions of the pins are deformed upwards (or bent) to deform and expand in relation to their original diameters . The schematic appearance of the end portions of the pins in Figs. 1B and 4B generally illustrate punctured end portions. In another example, ultrasonic welding, preferably applied for a brief period of possibly below about 1 second, can be used to deform the end portions
    Petition 870160007648, of 03/03/2016, p. 32/51 / 18 of the pins. In yet another example, a hot element applied to the pins can be used to fusibly deform their end portions. The schematic appearance of a single end portion provided for in the dashed circle on the upper left side of Fig. 4B, generally illustrates such a "molten" end portion. The temperature of the hot element can be at least about 50 ° C higher than a melting temperature of the pin material. In an embodiment of the present invention, where the base of the emitter 10 can be formed of polyethylene, the pins which are preferably formed as a solidary part of, eg here the base, are thus also formed of polyethylene rom which has a melting temperature of about 120 ° C. In such an embodiment, the hot element can thus preferably have a temperature of at least about 170 ° C and the heat in one example can preferably be applied for a brief period of possibly below about 1 second.
    [0041] In embodiments where the emitter 10 can be connected to an irrigation pipe, one side of the emitter (here the base) that connects to the pipe can preferably be formed from the same material as the pipe to ensure adhesion. In Fig. 4B, such a connection of the base 12 to a pipe 13 is seen to be made via a peripheral wall 20. Typically, drip irrigation pipes are made of polyethylene and thus the base 12, in the modalities shown, which connects to the pipe it can preferably also be formed of polyethylene. In embodiments where the tube can be made of a different material such as polypropylene, the base 12 can therefore also be formed from polypropylene. Cover 14, on the other hand, can be formed of any plastic material such as polyethylene, polypropylene, PA, PBT, PET, POM (or similar) - as it may not be essential that it be formed of the same material as the tube when it does not constitute the emitter part 10 that connects to the tube. In addition, it may be necessary for the cover 14 to be formed of the same material as the base in
    Petition 870160007648, of 03/03/2016, p. 33/51 / 18 modalities where the base 12 and the cover 14 make permanent connection by pressure formed via the pins.
    [0042] In an embodiment of the present invention where the pins have a circular profile in cross section, the pins 22 can have a diameter that is less than about 3 millimeters and preferably between about 1 and
    1.5mm. In addition, in an embodiment of the present invention, a thickness T of the membrane before being compressed between the cover and base can be between about 0.5 to 1.5 millimeters and after the compression thickness T can decrease (at least in regions where membrane 32 is compressed from both sides) by about 0.02 to 0.15 millimeter.
    [0043] The compressed membrane that presses against the inner side of the cover 14 and the base 12 with six flanks 34, thus can act to seal paths of liquid flows formed in the emitter. As seen in Fig. 4B, the flank 34 covering the inner side of the base 12 also rests against the raised face 27 to assist in sealing the flow path 24 and the recess 26. According to one aspect of the present invention, a better sealing of the flow path 24 with the higher liquid pressures it retains during the use of the emitter, can be aided at least in some embodiments by the provision of pins 22 adjacent along the lateral sides of the flow path. As shown in Fig. 5B, the proximal locations where the pins can be placed on opposite side sides of the flow path, can be assisted by the provision of the openings 33 formed in a membrane modality. As seen in the modality demonstrated eg in Fig. 4B and eg Fig. 3B, the proximal locations that the pins can be placed on opposite side sides of the flow path can be assisted by the provision of a preferable modality of the membrane that includes the strangulation segment , which avoids the need to form penetrating openings through the membrane 32.
    [0044] In the description and claims of this application, each of the
    Petition 870160007648, of 03/03/2016, p. 34/51 / 18 verbs, "understand" "include" and "have" and conjugations thereof, are used to indicate that the object or objects of the verb are not necessarily a complete listing of the subject's members, components, elements or parts or verb subjects.
    [0045] Although as present modalities have been described to a certain degree of particularity, it should be understood that various changes and modifications can be made without departing from the scope of the invention if as claimed here below.
    权利要求:
    Claims (28)
    [1]
    1. Drip irrigation emitter (10), comprising first and second members (12, 14) and a deformable membrane (32);
    each between the first and the second members comprising inner and outer sides and the membrane comprising two flanks (34) and a membrane periphery (36) that joins the flanks, the membrane (32) covering with a flank at least a portion of the inner side of the first member and inner side of the second member covering at least a portion of the other flank of the membrane and facing the inner side of the first member, the first member (12) comprising a plurality of protruding pins (22) that pass to be received into holes (21) formed in the second member (14), the holes extending through the second member to open outwards on its inner and outer sides, where the pins (22) pass proximal to the membrane periphery (32) and comprise end portions projecting out of the holes (21) which are deformed to form deformed segments that rest against the outside of the second member (14) to press the first and second members towards each other and compress the membrane (32) that is interposed between them;
    the drip irrigation emitter (10) characterized by the fact that it additionally comprises:
    a fluid flow restriction path (24) being formed on the inner side of one of the first and second members and at least a portion of one of the membrane flanks covering at least a portion of the fluid flow restriction path ( 24).
    [2]
    2. Drip irrigation emitter according to
    Petition 870190099087, of 10/03/2019, p. 6/11
    2/6 claim 1, characterized by the fact that each of the first (12) and the second (14) members has an elongated shape and the flow restriction path (24) of fluid extends longitudinally between two terminal ends .
    [3]
    3. Drip irrigation emitter according to claim 2, characterized by the fact that at least one pin (22) is located adjacent to each of: the first terminal end, the second terminal end and at least one location between the two terminal ends.
    [4]
    4. Drip irrigation emitter according to claim 3, characterized in that the flow restriction path (24) of fluid extends along a geometric axis and the at least one pin (22) is a pair of pins, where in each pair, one pin is on one side of the geometry axis and the other pin is on the other side of the geometry axis.
    [5]
    Drip irrigation emitter according to any one of claims 2 to 4, characterized in that the membrane comprises strangulation segments (40) and head (38) extending longitudinally and a width of the strangulation segment (40 ) measured between opposite side sides of the membrane periphery (32) being less than a corresponding width of the head segment.
    [6]
    6. Drip irrigation emitter according to claim 5, characterized by the fact that it comprises an outlet recess (26) formed on the inner side of one of the first (12) and the second (14) members and liquid flowing through of the flow restriction path (24) of fluid communicating downstream via the outlet recess with the external environment of the emitter (10), in which the choke segment (40) covers at least a portion of the flow restriction path fluid flow.
    [7]
    7. Drip irrigation emitter according to
    Petition 870190099087, of 10/03/2019, p. 7/11
    3/6 claim 6, characterized by the fact that at least one pin (22) passes externally to the membrane adjacent to a portion of the membrane periphery that extends longitudinally along the strangulation segment (40).
    [8]
    Drip irrigation emitter according to any of claims 1 to 7, characterized in that the fluid flow restriction path (24) opens outwardly from the inside on a face that is raised above portions on the inner side adjacent to the fluid flow restriction path.
    [9]
    Drip irrigation emitter according to any one of claims 1 to 8, characterized in that the pins (22) pass outside the membrane adjacent to the membrane periphery.
    [10]
    10. Drip irrigation emitter according to any one of claims 1 to 9, characterized by the fact that deformation of the end portions of the pins is carried out after receiving the pins into the holes.
    [11]
    11. Drip irrigation emitter according to any one of claims 1 to 10, characterized in that at least some of the pins (22) comprise in a cross section perpendicular to the direction of projection at least one of: a circular profile, an oval profile, a polygonal profile, an elliptical profile, a rectangular profile.
    [12]
    12. Drip irrigation tube, characterized by the fact that it comprises a drip irrigation emitter (10) as defined in any one of claims 1 to 11, in which the emitter is connected by an external side of the first member to the tube.
    [13]
    13. Method for producing a drip irrigation emitter, characterized by the fact that it comprises the steps of:
    provide first and second members (12, 14) and a deformable membrane (32), the first member (12) comprising a plurality of
    Petition 870190099087, of 10/03/2019, p. 11/11
    4/6 pins (22) protruding and the second member (! 4) being formed with a plurality of through holes (21), align the first and second (12, 14) members with the membrane (32) interposed between it so that each pin is received in a hole by burying the hole on the one side and projecting out of the hole on the other side in an end portion, and deforming the end portions to form deformed segments of the pins (22) that support against the second member (14) to press the first and second members towards each other and compress the membrane (32).
    [14]
    14. Method according to claim 13, characterized in that each of the first and the second (12, 14) members comprises an internal side where it faces the other member and in which the emitter (10) comprises a flow restriction path (24) of fluid being formed on the inside of one of the first and second members.
    [15]
    Method according to claim 14, characterized in that the membrane (32) comprises two flanks and a membrane periphery that joins the flanks and at least a portion of a membrane flank covers at least a portion of the path of fluid flow restriction.
    [16]
    Method according to either of claims 14 or 15, characterized in that each of the first and second members is elongated in shape and the fluid flow restriction path extends longitudinally between two terminal ends.
    [17]
    17. Method according to claim 16, characterized in that at least one pin (22) is located adjacent to each of: the first terminal end, the second terminal end and at least one location between the two terminal ends.
    Petition 870190099087, of 10/03/2019, p. 9/11
    5/6
    [18]
    18. Method according to claim 17, characterized in that the fluid flow restriction path (24) extends along a geometric axis and the at least one pin (22) is a pair of pins, where in each pair one pin is on one side of the geometry axis and the other pin is on the other side of the geometry axis.
    [19]
    Method according to any one of claims 16 to 18, characterized in that the membrane comprises strangulation segments (40) and head (38) extending longitudinally and a width of the strangulation segment (40) measured between sides opposite sides of the membrane periphery (32) being less than a corresponding width of the head segment.
    [20]
    20. Method according to claim 19, characterized in that it comprises an outlet recess (26) formed on the inner side of one of the first (12) and the second (14) members and liquid flowing through the restriction path of flow (24) of fluid communicating downstream via the outlet recess with the external environment of the emitter (10), in which the choke segment (40) covers at least a portion of the fluid flow restriction path.
    [21]
    21. Method according to claim 20, characterized in that at least one pin (22) passes outside the membrane adjacent to a portion of the membrane periphery that extends longitudinally along the strangulation segment (40).
    [22]
    22. Method according to any one of claims 14 to 21, characterized in that the fluid flow restriction path (24) opens outwardly from the inner side on a face that is raised above adjacent inner portions fluid flow restriction path.
    [23]
    23. Method according to any one of claims 13 to 22, characterized by the fact that during alignment the reception of at least some of the pins (22) in their respective holes (21) is by
    Petition 870190099087, of 10/03/2019, p. 11/10
    6/6 press fit.
    [24]
    24. Method according to any one of claims 13 to 23, characterized in that the pins (22) pass outside the membrane (32) adjacent to the membrane periphery.
    [25]
    25. Method according to any one of claims 13 to 24, characterized in that the deformation of the end portions of the pins is carried out by impact applied to the pins.
    [26]
    26. Method according to any one of claims 13 to 24, characterized in that the deformation of the end portions of the pins is carried out by ultrasonic welding applied to the pins.
    [27]
    27. Method according to any of claims 13 to 24, characterized in that the deformation of the end portions of the pins is carried out by heat applied to the pins.
    [28]
    28. Drip irrigation tube, characterized by the fact that it comprises an emitter (10) produced according to the method as defined in any one of claims 13 to 27, in which the emitter is connected by an external side of the first member to the pipe.
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    同族专利:
    公开号 | 公开日
    CN105578872A|2016-05-11|
    MX2016001740A|2016-05-18|
    PE20160418A1|2016-05-04|
    MX369536B|2019-11-11|
    WO2015044801A1|2015-04-02|
    IL243761D0|2016-04-21|
    CN105578872B|2020-02-14|
    US10172302B2|2019-01-08|
    US20160219803A1|2016-08-04|
    IL243761A|2021-03-25|
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    法律状态:
    2019-07-16| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-01-21| B09A| Decision: intention to grant|
    2020-02-04| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/07/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201361882455P| true| 2013-09-25|2013-09-25|
    PCT/IB2014/063453|WO2015044801A1|2013-09-25|2014-07-26|Drip emitter|
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