EP2595756A2 - Multi-nozzle rotary sprinkler - Google Patents
Multi-nozzle rotary sprinklerInfo
- Publication number
- EP2595756A2 EP2595756A2 EP11738361.2A EP11738361A EP2595756A2 EP 2595756 A2 EP2595756 A2 EP 2595756A2 EP 11738361 A EP11738361 A EP 11738361A EP 2595756 A2 EP2595756 A2 EP 2595756A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- inlet
- water
- sprinkler
- outlet
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 155
- 239000012530 fluid Substances 0.000 claims abstract description 95
- 230000037361 pathway Effects 0.000 claims abstract description 43
- 230000002262 irrigation Effects 0.000 claims abstract description 15
- 238000003973 irrigation Methods 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 16
- 238000004891 communication Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 230000006870 function Effects 0.000 description 5
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- 239000003643 water by type Substances 0.000 description 2
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- 230000025508 response to water Effects 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3026—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
-
- 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
- B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
- B05B12/04—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for sequential operation or multiple outlets
-
- 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
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/70—Arrangements for moving spray heads automatically to or from the working position
- B05B15/72—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means
- B05B15/74—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means driven by the discharged fluid
Definitions
- Embodiments of the invention relate to multi-nozzle rotary sprinklers, sprinkler systems and methods.
- Irrigation sprinklers are known for watering circular patterns or arc segments of a circular pattern.
- Typical irrigation sprinklers discharge a single rotary water stream that is rotated in a circle around a vertical rotational axis. This water stream is thrown by a sprinkler nozzle mounted in the peripheral sidewall of the nozzle head at an upward angle relative to the horizontal to direct the water a radial distance from the nozzle.
- Irrigation systems generally comprise multiple sprinklers within multiple watering zones. Each sprinkler is recessed within the ground and is fed water through underground pipes. An irrigation controller activates a zone by opening a valve that controls the flow of water through the pipes of the zone. The irrigation controller activates the zones sequentially for a predetermined period of time based on zone program instructions.
- Embodiments of the invention are directed to a rotary sprinkler and a sprinkler system.
- the rotary sprinkler comprises a plurality of nozzles, each of which comprises a fluid pathway including a central axis, an inlet, an outlet, a length measured from the inlet to the outlet along the central axis, and an interior diameter at the outlet.
- the rotary sprinkler comprises three or more nozzles.
- the rotary sprinkler comprises 4-7 nozzles.
- the rotary sprinkler comprises 8-12 nozzles.
- the plurality of nozzles are configured to discharge water streams at different radial distances from the sprinkler to form concentric watering rings when the nozzles are rotated about a vertical axis.
- each of the nozzles has a different interior diameter at the outlet.
- each of the nozzles has a different length.
- each of the nozzles is oriented at a different angle relative to the ground.
- each of the nozzles has a different interior diameter at the outlet, a different length and/or is oriented at a different angle relative to the ground.
- the rotary sprinkler comprises first, second and third nozzles.
- the first nozzle comprises a first nozzle fluid pathway including a central axis, an inlet, an outlet, a first length measured from the inlet to the outlet along the central axis, and a first interior diameter at the outlet.
- the second nozzle comprises a second nozzle fluid pathway including a central axis, an inlet, an outlet, a second length measured from the inlet to the outlet along the central axis, and a second interior diameter at the outlet.
- the third nozzle comprises a third nozzle fluid pathway including a central axis, an inlet, an outlet, a third length measured from the inlet to the outlet along the central axis, and a third interior diameter at the outlet.
- the first interior diameter is greater than the second interior diameter
- the second interior diameter is greater than the third interior diameter.
- the first length is greater than the second length, and the second length is greater than the third length.
- the second length is approximately 65- 85% of the first length
- the third length is 65-85% of the second length.
- the first length is 1.7-2.83 inches
- the second length is 1.25- 2.09 inches
- the third length is 0.92-1.54 inches. Adjustments may be made to the lengths depending on the water pressure and the radial distance to be covered by the sprinkler. Thus, in some embodiments, the lengths are longer for higher water pressures and longer water throw distances.
- the second interior diameter is approximately 70- 90% of the first interior diameter
- the third interior diameter is 70-90% of the second interior diameter.
- the first interior diameter is 0.125-0.185 inches
- the second interior diameter is 0.096-0.144 inches
- the third interior diameter is 0.075-0.122 inches.
- the interior diameters are enlarged for higher water pressure and to throw more water longer distances. For example, to cover a radial distance of approximately 80 feet, the first diameter is approximately 0.250-0.370 inches, the second diameter is approximately 0.192-0.288 inches and the third diameter is approximately 0.150-0.244.
- the central axis at the outlet of the first nozzle fluid pathway is oriented at a first angle relative to a horizontal plane, which is perpendicular to the vertical axis
- the central axis at the outlet of the second nozzle fluid pathway is oriented at a second angle relative to the horizontal plane
- the central axis at the outlet of the third nozzle fluid pathway is oriented at a third angle relative to the horizontal plane.
- the first angle is greater than the second angle
- the second angle is greater than the third angle.
- the rotary sprinkler comprises a nozzle head that supports the first, second and third nozzles. In one embodiment, the rotary sprinkler comprises a base that supports the nozzle head. In some embodiments, the rotary sprinkler comprises a drive mechanism that drives rotation of the nozzle head about a vertical axis relative to the base. In some embodiments, the drive mechanism comprises a motor configured to drive the rotation of the nozzle head about the vertical axis.
- the first nozzle body is configured to discharge a first water stream a first distance
- the second nozzle body is configured to discharge a second water stream a second distance, which is less than the first distance
- the third nozzle body is configured to discharge a third water stream a third distance, which is less than the second distance.
- the first, second and third output streams respectively produce first, second and third elliptical spray patterns.
- the first elliptical spray pattern overlaps a distal portion of the second elliptical spray pattern
- the second elliptical spray pattern overlaps a distal portion of the third elliptical spray pattern.
- the rotary sprinkler comprises a main water inlet configured to receive a flow of water from a water supply line and a fluid flow path connecting the main water inlet to the inlets of the first, second and third nozzles.
- the rotary sprinkler comprises a valve configured to control a flow of water through the fluid flow path responsive to signals received from a controller. In some embodiments, the rotary sprinkler comprises a motor configured to move the valve between opened, closed and intermediary positions.
- the rotary sprinkler comprises a plurality of valves, each configured to control a flow of water to one or more of the nozzles.
- the rotary sprinkler comprises one or more motors configured to move the plurality of valves between opened, closed and intermediary positions.
- the fluid flow path comprises a first fluid flow path connecting the water inlet to the inlet of the first nozzle, a second fluid flow path connecting the water inlet to the inlet of the second nozzle, and a third fluid flow path connecting the water inlet to the inlet of the third nozzle.
- the rotary sprinkler comprises a first valve configured to control a flow of water through the first fluid flow path responsive to signals received from a controller, a second valve configured to control a flow of water through the second fluid flow path responsive to signals received from a controller, and a third valve configured to control a flow of water through the third fluid flow path responsive to signals received from a controller.
- the rotary sprinkler comprises a sensor that generates a signal indicative of a pressure in the fluid flow path, or a flow rate of a water flow through the fluid flow path.
- a pressure regulator in the fluid flow path in some embodiments, a pressure regulator in the fluid flow path.
- the fluid flow paths of each of the nozzles comprise a straight cylindrical section extending from the outlet to an intermediary location between the inlet and the outlet of the nozzle fluid pathway, and a curved section extending from the inlet to the intermediary location.
- the rotary sprinkler comprises a controller that is located within the sprinkler.
- the controller comprises one or more processors configured to execute program instructions stored in memory to perform one or more method steps or functions described herein.
- the controller is configured to set a position of the one or more valves of the rotary sprinkler to opened, closed and intermediary positions.
- the controller is configured to receive output signals from the sensor.
- the controller receives control signals from a system controller located remotely from the rotary sprinkler.
- the rotary sprinkler comprises a power supply.
- the power supply is rechargeable.
- the base of the rotary sprinkler comprises a sealed compartment in which electrical components of the rotary sprinkler are contained.
- the electrical components comprise one or more motors, a controller, one or more processors, a power supply, and/or electrical circuitry.
- the sprinkler system comprise a plurality of rotary sprinklers, an irrigation controller and a system or sprinkler controller.
- Embodiments of the rotary sprinklers include one or more embodiments described herein.
- the rotary sprinklers each comprise a water supply inlet, a nozzle head supported by a base, and a plurality of nozzles supported by the nozzle head.
- the nozzles each comprise a fluid pathway having an inlet and an outlet.
- a fluid flow path connects the water supply inlet to the inlets of the nozzles.
- the sprinklers each comprise at least one valve configured to control the flow of water through the fluid flow path.
- the irrigation controller comprises memory containing zone program instructions, and a processor configured to execute the zone program instructions and generate zone valve signals based on the zone program instructions.
- the system controller comprises memory containing sprinkler program instmctions, and a processor configured to execute the sprinkler program instructions and communicate control signals to the at least one valve of each of the rotary sprinklers based on the sprinkler program instructions and the zone valve signals.
- each of the rotary sprinklers comprises a rechargeable power supply coupled to the at least one valve.
- the system controller provides power to the power supply over a control line.
- control signals comprise valve settings, and each of the rotary sprinklers sets a position of the at least one valve responsive to the valve settings.
- the system comprises a sensor configured to produce a sensor output indicative of a measured pressure or water flow rate, and the system controller generates the valve settings based on the sensor output.
- FIG. 1 is a schematic diagram of a rotary sprinkler in accordance with embodiments of the invention.
- FIG. 2 is a simplified drawing illustrating exemplary water streams from a rotary sprinkler in accordance with embodiments of the invention .
- FIG. 3 is a schematic diagram of a nozzle head portion of a rotary sprinkler in accordance with embodiments of the invention.
- FIGS. 4 and 5 are perspective views of the rotary sprinkler formed in accordance with embodiments of the invention with a nozzle head in lowered and raised positions, respectively.
- FIGS. 6 and 7 are exploded perspective views of components contained within a sprinkler base in accordance with embodiments of the invention.
- FIG. 8 is an exploded perspective view of the nozzle assembly in accordance with embodiments of the invention.
- FIG. 9 is a side cross-sectional view of a set of the nozzles formed in accordance with embodiments of the invention.
- FIG. 10 is a simplified diagram of a sprinkler system in accordance with embodiments of the invention.
- FIG. 11 is a simplified diagram of a watering system in accordance with systems of the prior art.
- FIG. 12 is a simplified diagram illustrating an update to the system depicted in FIG. 11.
- Embodiments of the invention are directed to multi-nozzle rotary sprinklers, sprinkler systems and methods. Elements depicted in the drawings having the same or similar reference correspond to the same or similar element.
- FIG. 1 is a schematic diagram of a rotary sprinkler 100 in accordance with embodiments of the invention.
- the rotary sprinkler 100 generally comprises a nozzle head 102, a plurality of nozzles, each generally referred to as 104, and a base 106.
- the base 106 provides support for the nozzle head 102.
- the nozzle head 102 supports the plurality of nozzles 104, such as nozzles 104A-C.
- While the exemplary sprinkler 100 is illustrated as including 3 nozzles 104, embodiments of the sprinkler include two or more nozzles. In one embodiment, the sprinkler 100 includes three or more nozzles. In one embodiment, the sprinkler 100 includes 4-7 nozzles or 8-12 nozzles.
- the rotary sprinkler 100 includes a water supply inlet 108 that may be coupled to a water supply line 110, such as a hose or in-ground piping.
- the water supply line 110 provides a pressurized source of water that is delivered to the nozzles 104 through a fluid flow path of the sprinkler 100.
- the fluid flow path comprises a section 114 through the base 106 and a section 116 through the nozzle head 102.
- the fluid flow path section 114 of the base 106 extends from the water supply inlet 108 to an inlet 118 of the nozzle head 102.
- the fluid flow path section 116 of the nozzle head 102 extends from the inlet 118 to inlets 120 of the nozzles 104.
- Each of the nozzles 104 includes a fluid pathway, generally referred to as 122, that fluidically couples the inlet 120 to an outlet 124. Accordingly, water supplied by the water supply line 110 passes through the water supply inlet 108 of the rotary sprinkler 100, the fluid flow path section 114 of the base 106, the fluid flow path section 116 of the nozzle head 102 and the fluid pathway 122 of the nozzles 104 where it is discharged through the outlet 124 of the nozzles 104 and directed to the watering area.
- the nozzle head 102 is configured to rotate about a vertical axis 126 relative to the base 106.
- the rotary sprinkler 100 includes a drive mechanism 128 that is configured to drive the rotation of the nozzle head 102 about the axis 126 relative to the base 106.
- the drive mechanism 128 comprises a motor 129, such as an electric motor or a hydraulic motor, that drives the rotation of the nozzle head 102 relative to the base 106 through a suitable gear arrangement.
- the rotary sprinkler 100 is designed for use as an in-ground sprinkler.
- the base 106 is buried within the ground and the nozzle head 102 is configured to telescope out of the base 106 to a raised position when water pressure is applied to at least the inlet 118 of the nozzle head 102 for performance of a watering operation.
- the nozzle head 102 recedes within the base 106 to a lowered position, in which it is generally located at or just below the turf or grass.
- the nozzle head 102 is biased toward the lowered position using, for example, a spring. The spring holds the nozzle head 102 within the base 106 until sufficient water pressure is applied to the inlet 118.
- the rotary sprinkler 100 is configured for above- ground watering operations.
- the base 106 provides sufficient support for the nozzle head 102 such that the nozzle head 102 is maintained in a vertical orientation during the watering operation. It is not necessary for the nozzle head 102 to recede within the base 106 in this embodiment.
- each of the nozzles 104 is configured to discharge a water stream to a different watering area or target site than the other nozzles 104 of the rotary sprinkler 100. This allows the sprinkler 100 to produce concentric watering rings as the nozzle head 102 is rotated about the vertical axis 126.
- FIG. 2 is a simplified drawing illustrating exemplary water streams, each generally referred to as 130, from the rotary sprinkler 100 in accordance with embodiments of the invention.
- the watering streams 130 fall on watering areas, generally referred to as 132, located on the ground or other target.
- nozzle 104A is configured to discharge water stream
- Nozzle 104B is configured to discharge a water stream 130B to a watering area 132B that extends to a radial distance 134A from the rotary sprinkler 100.
- nozzle 104C is configured to discharge a water stream 130C that falls on a watering area 132C that extends to a radial distance 134C from the sprinkler 100.
- the radial distance 134A is greater than the radial distance 132B, which is greater than the radial distance 132C.
- the watering areas 132A, 132B and 132C only partially overlap each other, For instance, the watering area 132A covered by the water stream 130A overlaps only a distal portion 136 of the watering area 132B. Similarly, the watering area 132B of the water stream 130B overlaps only a distal portion 138 of the watering area 132C of the water stream 130C.
- each of the water streams 130 produced by the plurality of nozzles 104 of the rotary sprinkler 100 are configured to water an annular ring around the sprinkler 100 as the nozzle head 102 is rotated about the vertical axis 108 relative to the base 106 that does not significantly overlap the annular watering areas covered by the other nozzles 104.
- the resultant concentric watering rings allow for uniform watering per unit length in the radial direction from the sprinkler 100 as compared to single nozzle sprinklers. Another advantage is that when the system water flow or pressure is adjusted, a proportional change in the watering pattern occurs.
- the water streams 130 do not produce as much spray as single nozzle sprinklers of the prior art.
- the watering areas 132 covered by each of the water streams 130 are approximately elliptical, as illustrated in FIG. 2. This has the advantage of reducing water loss through evaporation into the air, resulting in more efficient watering of the targeted area.
- each of the nozzles 104 has a central axis 140 that extends along the fluid pathway 122, as shown in FIG. 1. While the fluid pathway 122 is illustrated as a straight tubular section in FIG. 1, the fluid pathway 122 may also be curved, as described below.
- the central axis 140 generally extends through the center of the straight and/or curved sections of the fluid pathway 122 of each nozzle 104.
- the fluid pathway 122 has an interior diameter measured in a plane that is perpendicular to the central axis 140. In accordance with one embodiment, the fluid pathway 122 has a uniform interior diameter. In accordance with another embodiment, the fluid pathway 122 has a non-uniform interior diameter.
- each of the nozzles 104 has a different interior diameter, generally referred to as 142, at the outlet 124.
- the nozzles 104 having watering areas 132 located farther from the sprinkler 100 have larger diameters than the nozzles 104 having watering areas 132 located more closely to the sprinkler 100.
- the exemplary rotary sprinkler 100 illustrated in FIG. 1 nozzle 104A has an interior diameter 142A that is larger than the interior diameter 142B of the nozzle 104B.
- the interior diameter 142B of the nozzle 104B is larger than the interior diameter 142C of the nozzle 104C.
- the interior diameters 142 of the nozzles 104 are set based on the expected water pressure at the water supply inlet 108 and the radial distance from the rotary sprinkler 100 where the desired watering area 132 is located. In one embodiment, the interior diameters of each of the nozzles 104 are set to produce streams 130 that produce watering areas 132 that form concentric rings around the rotary sprinkler 100 when the nozzle head 102 is rotated 360 degrees during a watering operation.
- the selection of the interior diameters 142 of the nozzles 104 is made based on an expected pressure at their inlets 120 and the desired maximum radial distance from the sprinkler 100 that is to be watered. For instance, using a pressure of 40 psi, a single nozzle radius of 0.125 inches can discharge a water stream a distance of 40 feet when the volumetric flow rate of the water at the inlet 120 is approximately 7 gallons per minute. In one embodiment, this overall radius is used to determine the outlet diameter settings for multiple nozzles such that concentric rings of watering areas may be produced.
- the outlet diameters 142 of the plurality of the nozzles 104 are computed based on this single nozzle radius determination.
- the single nozzle radius is divided into a plurality of nozzles 104 where the sum of the radii of the plurality nozzles 104 is equal to the single nozzle radius.
- the nozzles can then be used to discharge the water to distinct radial distances and form a set of concentric ring watering areas.
- an overall radius of 0.25 is used to calculate multiple nozzles where the maximum desired distance is 80 feet.
- the radius of the single nozzle is determined, such as that mentioned above, we can use that radius to determine the radii of proportionately smaller nozzles. In one embodiment, this is accomplished by selecting the nozzles 104 such that the sum of all their cross-sectional areas conforming to radii of k*r(n) is made to be equal to the area of the selected single nozzle, where k is a nozzle proportion factor. In accordance with one embodiment, k is within the range of 0.70-0.90 or 70-90%. In accordance with another embodiment, k is within the range of 0.70-0.80 or 70-80%. In accordance with another embodiment, k is within the range of 0.75-0.79 or 75- 79%.
- k is within the range of 0.77-0.78 or 77-78%. In one embodiment, k is 0.78.
- the interior diameter 142B of the nozzle 104B at its outlet 124 is determined by multiplying the interior diameter 142A at its outlet 124 by the proportion factor k.
- the interior diameter 142C of the nozzle 104C at its outlet 124 is then determined by multiplying the interior diameter 142B at the outlet 124 by the proportion factor k.
- the watering ring size for any given nozzle must be known.
- the watering ring size for a given nozzle is the radial distance between the proximal edge 144 and the distal edge 146 of the watering area 132 for a given pressure at the inlet 120, as shown in FIG. 2 for watering area 132A. This has been measured empirically and modeled as 117 times the radius in feet for one embodiment. For the .077 inch radius nozzle outlet 124, the watering ring size is 9 feet from the proximal edge 144 to the distal edge 146. For a maximum range of 40 feet, this means the .077 radius nozzle waters a ring from 31 to 40 feet under full pressure.
- each successive nozzle can be set to water another ring inside the previous one. Taking .077 times .78 yields the next nozzle radius of approximately .06 inches. Taking .06 times 117 yields a ring size of 7 feet for the next ring. Thus, the second nozzle waters from 24 to 31 feet.
- the table provided below lists an exemplary set of 11 nozzles that may be used to generate concentric watering rings that cover a radial distance of 40 feet from the rotary nozzle 100 based on a water pressure of 40 psi.
- trajectory angles for each nozzle can be computed based on expected water velocity, nozzle height above the ground and the desired radial distance of the watering area to be covered by the nozzle.
- the trajectory angle 150 for each nozzle is determined by the orientation of the central axis 140 relative to a horizontal plane 148 extending perpendicularly to the vertical axis 126, about which the nozzle head 102 is configured to rotate.
- each of the nozzles of the rotary sprinkler 100 has a different trajectory angle, generally referred to as 150.
- the trajectory angle 150 of the nozzle 104 that is configured to have the farthest reaching output stream 130 (e.g., nozzle 104A) has the largest trajectory angle 150. In one embodiment, this trajectory angle 150 is approximately 30-45 degrees.
- nozzles 104 responsible for directing water streams 130 to shorter radial distances from the rotary sprinkler 100 have lower trajectory angles 150 than nozzles 104 that are responsible for generating water streams 130 that travel larger radial distances from the sprinkler 100.
- nozzle 104A has a trajectory angle 150A
- nozzle 104B has a trajectory angle 150B
- nozzle 104C has a trajectory angle 150C, as shown in FIG. 1.
- the length of each of the nozzles 104 determines the stream 130 that is discharged by the nozzle. If the nozzle 104 is too short, the stream breaks up upon exit of the nozzle 104 thereby limiting the distance the stream can travel. If the nozzle 104 is too long, the pressure drop across the nozzle 104 slows the velocity of the water flow through the nozzle, which can also prevent the stream 130 from reaching a desired radial distance from the rotary sprinkler 100.
- the nozzles 104 are each configured to have water flows through the nozzles 104 that travel at approximately the same velocity for a given pressure.
- each nozzle 104 corresponds to the length of the central axis 140 measured from the inlet 120 to the outlet 124, as shown in FIG. 1.
- the lengths 154 of the nozzles 104 are approximated using Darcy's formula provided below, where Ap is the pressure drop across the nozzle 104 due to friction in the fluid pathway 122, p is the density of water, f is a friction coefficient, L is the pipe length 154, v is the water flow rate, D is the internal pipe diameter, and Q is the volumetric flow rate of the water.
- a length of the fluid pathway 122 for a particular nozzle 104 is computed for a specific output velocity (e.g., approximately 39 feet per second). In this situation the largest nozzle is the longest and the most likely to produce an irregular flow if it is too short.
- the length 154 of the fluid pathway 122 of the nozzle needs 104 to be long enough so that the flow reaches a turbulent state. If the length 154 is less than this critical length, the flow through the nozzle 104 will be irregular. Lengths 154 that are greater than this critical length, reduces the velocity of the water that is ejected from the nozzle 104.
- a nozzle radius of 0.077 inches requires a length 154 of approximately 2.26 inches in order to work in a system providing 40 psi of dynamic pressure. Shorter lengths 154 will not produce the desired 40 foot radial distance due to irregular flow in the nozzle 104, and longer lengths 154 will reduce the radial distance the stream 130 can travel due to velocity reduction in the fluid pathway 122. Longer lengths 154 also reduce the size of the watering area 132.
- the lengths 154 of the remaining nozzles 104 can be computed given the same pressure drop (e.g., 12.5 psi) and velocity. In this way, all nozzle streams 130 exit at a similar velocity and the trajectory angle 150 can be used to determine the radial distance the stream 130 travels from the rotary sprinkler 100.
- each of the streams 130 break up into droplets as the stream travels from the outlet 124 to the targeted watering area 132. This creates an elliptical pattern on the ground that forms the watering area 132.
- the watering pattern 132 varies in proportion to the water flow that travels through the nozzle 104. This allows for the formation of shorter and longer sets of concentric watering rings.
- the stream 130 discharged from the nozzle 104 responsible for the watering area 132 located closest to the sprinkler 100 is diffused by a modification to the outlet 124, which may include a curved member in the fluid flow path leading up to the outlet 124 resulting in a taller outlet and a reduction in the outlet width resulting in watering area 132 having a longer and more narrow elliptical pattern compared to the nozzles 104 that lack the modification.
- a nozzle 104 may be configured to generate a spray pattern to cover the ground adjacent the sprinkler 100.
- the rotary sprinkler 100 includes a valve 160 that controls the flow of water through the fluid flow paths 114 and 116 of the sprinkler 100, as shown in FIG. 1.
- the valve 160 has a closed position, in which water is prevented from flowing along the fluid flow paths, and an opened position, in which water is free to travel along the fluid flow paths.
- the valve 160 also includes intermediary positions that allow the flow rate of the water through the fluid flow path to be set to a value that is less than the maximum flow rate achieved when the valve 160 is in the fully opened position. As a result, the valve 160 may be used to adjust the flow rate of the water through the fluid flow path 112 to be set to the desired level. This allows for greater control over the streams 130 produced by the nozzles 104 and their watering areas 132.
- the position of the valve 160 is controlled by a motor 162.
- the motor 162 may be a stepper motor, a servo motor, or other suitable motor or device that may be used to adjust the position of the valve 160.
- the rotary sprinkler 100 includes a plurality of valves 160, as schematically illustrated in FIG. 3.
- the plurality of valves 160 are components of a multiplexor valve, rather than separate valves.
- the valves 160 may also be located in the base 106 rather than the nozzle head 102.
- Each of the valves 160 may be actuated between opened and closed positions using one or more motors, which are not shown in order to simplify the illustration, responsive to control signals as discussed above.
- each of the valves 160 in the sprinkler 100 control a flow of water to one or more of the nozzles 104 of the nozzle head 102.
- valve 1 0 A can be used to control the flow of water through a fluid flow path 170A connecting the water inlet 108 to the inlet 120 of the nozzle 104A
- valve 160B can be used to control the flow of water through the fluid flow path 170B connecting the water inlet 108 to the inlet 120 of the nozzle 104B
- valve 160C can be used to control the flow of water through the fluid flow path 170C connecting the water inlet 108 to the inlet 120 of the nozzle 104C.
- the flow of water to each of the nozzles 104 of the sprinkler 100 may be controlled independently of the flow of water to the other nozzles in the rotary sprinkler 100 through the actuation of the valves 160. As a result, individual nozzles may be turned on or off, or the flow rates through the nozzles 104 may be adjusted to a desired level to produce the desired watering areas 132. For instance, while the rotary sprinkler 100 may have the capability of watering out to a 40 foot radial distance from the sprinkler 100, it may be desirable to only water 25 feet from the sprinkler 100. In that case, the one or more nozzles 104 responsible for covering the radial distance from 25 to 40 feet from the sprinkler 100 may be turned off by setting the corresponding valves 160 to the closed position. The flow of water to the remaining nozzles 104 may be reduced, if necessary, by setting the corresponding valves 160 accordingly.
- the rotary sprinkler 100 includes a sensor 172 that measures a parameter of the water in the fluid flow pathway 114 or 116.
- the sensor comprises a pressure sensor that measures a pressure of the fluid in the fluid flow pathway 114 (shown) or 116.
- the sensor 172 is a flow sensor that measures a flow rate of the water traveling through the fluid flow path 114 (shown) or 116.
- the sensor 172 produces an output signal 174 that is representative of the parameter measured by the sensor 172.
- the sprinkler 100 includes a controller 164.
- the controller 164 represents one or more processors and circuitry used to perform functions described herein.
- the processor of the controller 164 is configured to execute sprinkler or watering program instructions stored in memory 166 (e.g., RAM, ROM, flash memory, or other tangible data storage medium) and perform method steps described herein responsive to the execution of the program instructions.
- Embodiments of the program instructions include the date and time to commence a watering operation, the duration of a watering operation, valve settings, and other information.
- the program instructions comprise valve settings and the controller 164 controls the one or more valves 160 in response to the valve settings.
- the valve settings for each of the one or more valves 160 map a desired water flow rate through the valve 160 to a specific valve position. In one embodiment, this flow rate mapping is provided for a series of pressures. For example, when the inlet pressure is 40 psi and the desired input flow rate is 9 feet per second, the mapping will identify a valve position, which is included in the program instructions stored in the memory 166.
- the valve settings may be dynamically set by the controller 164 based on the output signal 174 (flow rate or pressure) and a predefined desired water flow rate through the valve 160. Accordingly, the controller 164 may adjust the flow of the water through the sprinkler 100 responsive to the execution of program instructions stored in the memory 166.
- the sprinkler program instructions include valve setting instructions that are dependent upon the angular position of the nozzles 104 about the axis 126 relative to a reference. This allows for the generation of non-circular watering patterns by modifying the distance the discharged streams 130 travel from the sprinkler 100. As a result, the sprinkler 100 can produce watering patterns that avoid targets that are within the range of the sprinkler 100 that should not be watered.
- the sprinkler program instructions include rotation speed settings that set the rotational speed of the nozzle head 102. Execution of the program instructions by the controller 164 generate control signals to the motor 129 based on the rotation speed settings that are used to control the motor 129. In one embodiment, the rotation speed settings define a constant rotational velocity for the nozzle head 102. In accordance with another embodiment, the rotation speed settings are dependent upon the angular position of the nozzle head 102 about the axis 126 relative to a reference. Thus, in one embodiment, the executed program instructions generate control signals to the motor 129 that cause the rotational speed of the nozzle head 102 to vary depending on its angular position.
- the nozzle head 102 may be rotated slower to deliver more water to an angular section of the watering pattern, or faster to deliver less water to an angular section of the watering pattern.
- This angular speed control of the nozzle head 102 may also be combined with the control of the positions of the one or more valves in each sprinkler 100 to control the amount of water that is delivered by the sprinkler 100.
- the method steps comprise driving the rotation of the nozzle head 102 through the control of the motor 129 responsive to program instructions stored in the memory 166.
- the method steps comprise receiving the output signal 174 from the sensor. In one embodiment, the method steps comprise processing the output signal 174 from the sensor to produce a value indicative of the measured parameter. In one embodiment, the method steps comprise communicating the output signal 174 or the corresponding value to a remote system, such as a system controller.
- the controller 164 is configured to receive control signals from a system controller located remotely from the sprinkler 100, and process the control signals to perform method steps described herein, such as setting the positions of the one or more valves 160, rotating the nozzle head 102, communicating information, acknowledging communications, and other method steps. In one embodiment, the controller 164 relays the output signal 174 or a value represented by the output signal 174 to the system controller using either a wired or wireless communication link.
- the sprinkler 100 includes a power supply 175, such as a battery, a capacitor, a solar cell or other source of electrical energy, that provides power to the processor of the controller 164, the motor 129, the motor 162, the sensor 172 and/or other component of the sprinkler 100 requiring electrical energy.
- the power supply 175 is a rechargeable power supply, which may be recharged by signals received over a control line 177 or other wired connection, such as from the system controller described below.
- the rotary sprinkler 100 includes a pressure regulator 176 that is configured to regulate a pressure of the water in the fluid flow paths 114 and/or 116.
- the pressure regulator 176 is configured to maintain a pressure of the water in at least the fluid flow path 116 below a maximum pressure, such as 40 psi.
- FIGS. 4 and 5 are perspective views of the rotary sprinkler 100 depicting the nozzle head 102 in lowered and raised positions, respectively.
- the base 106 comprises a lower container 180 and a pedestal 182 that extends above the container 180.
- the nozzle head 102 is received within the pedestal 182 when in the lowered position (FIG. 4) and extends to the raised position (FIG. 5) in response to water pressure applied to the inlet 118 of the nozzle head 102.
- FIG. 6 is an exploded perspective view of the components contained within the container 180 of the base 106.
- FIG. 7 is an exploded perspective view of the components contained or supported by the pedestal 182.
- the fluid flow path 114 extends through a pipe fitting 184 that may be coupled to a water supply line 110 (FIG. 1) and defines the water inlet 108.
- the fluid flow path 114 also extends through a tubing section 186 having a proximal end 188 that attaches to the pipe fitting 184 and a distal end 190 that extends through a cover 192.
- the tubing section 186 includes a valve 160 that is adapted to control the flow of water through the tubing section 186.
- a motor 162 drives the valve 160 between the closed, intermediary and fully opened positions through gears 194 and 196.
- the nozzle head 102 is received within a rotatable support 200, which in turn is received within the pedestal 182.
- the nozzle head 102 is allowed to telescope out of the rotatable support 200 from the lowered position (FIG. 4) to the raised position (FIG. 5) in response to the application of water pressure at the inlet 118 of the nozzle head 102.
- the nozzle head 102 includes protrusions 202 that extend from the exterior surface 204 and are generally aligned with the vertical axis 126.
- the protrusions 202 are received within vertical slots 206 formed in the interior wall of the rotatable support 200.
- the engagement of the protrusions 202 of the nozzle head 102 with the slots 206 of the rotatable support 200 causes the nozzle head 102 to rotate along with rotation of the rotatable support 200 about the vertical axis 126.
- the sprinkler 100 comprises a drive mechanism 128 that is contained within the container 180.
- the drive mechanism 128 comprises a motor 129 that drives rotation of a gear 210 that is supported by the cover 192.
- a bottom end 212 of the rotatable support 200 receives a cylindrical protrusion 214 and includes a gear 216.
- the motor 129 of the drive mechanism 128 rotates the rotatable support 200 about the axis 126 using the gears 210 and 216, which in turn drives the rotation of the nozzle head 102 relative to the pedestal 182 and the container 180 of the base 106.
- a spring 218 has a proximal end 220 that is attached to a hook 222 on the cover 192 and a distal end 224 that is attached to a structure supported within the nozzle head 102.
- the spring 218 maintains the nozzle head 102 in the lowered position when there is insufficient water pressure at the inlet 118, and allows the nozzle head 102 to extend to the raised position under sufficient water pressure at the inlet 118.
- a filter screen 226, shown in FIG. 7, is located within the flow path 116 of the nozzle head 102.
- the filter screen may be located in the flow path 114 of the base 106.
- the rotary sprinkler 100 includes a controller 164 that is contained within the container 180. In one embodiment, the controller 164 operates to control the motor 162 and the positions of the valve 160. In one embodiment, the sprinkler 100 includes a sensor that detects the positions of the valve 160.
- One exemplary sensor that can be used to carry out this function is a Hall effect sensor that detects a magnetic field of a magnet that is attached to the gear 196, for example.
- the controller 164 controls the motor 129 of the drive mechanism 128 and the rotation of the nozzle head 102.
- the sprinkler 100 includes a sensor that detects the angular position of the nozzle head relative to the base 106.
- One exemplary sensor capable of performing this function is a Hall effect sensor that can detect the magnetic field of a magnet that is attached to the rotatable support 200, the nozzle head 102, or the gear 216 to detect the angular position of the nozzle head 102 relative to the base 106, for example.
- the controller 164 is configured to receive and process control signals from a system controller located remotely from the sprinkler 100.
- the control signals received from the system controller may be provided either through a wired connection or wirelessly in accordance with conventional techniques.
- the controller 164 may perform method steps responsive to the control signals, as discussed above.
- the container 180 includes a sealed compartment, in which the electronics of the sprinkler 100 are housed.
- the pedestal 182 includes a threaded base 230 which may be screwed on to a threaded opening 232 of the container 180.
- a seal 234 is positioned between the threaded base 230 and the container 180 to prevent water from entering the compartment containing the electronics.
- the plurality of nozzles 104 are supported by the nozzle head 102.
- the nozzles 104 are formed in a nozzle assembly 240.
- the nozzle assembly 240 is secured to the nozzle head 102 such that the nozzle assembly 240 rotates with rotation of the nozzle head 102.
- FIG. 8 is an exploded perspective view of the nozzle assembly 240 in accordance with embodiments of the invention.
- the nozzle assembly 240 may comprise two or more components depending on the number of nozzles 104. Thus, while the illustrated embodiment of the nozzle assembly 240 includes three components that align to form twelve nozzles 104, the nozzle assembly 240 may include two halves that form two or more nozzles 104.
- the components forming the nozzle assembly 240 are secured together using nuts 242 and bolts 244.
- the components forming the nozzle assembly 240 may be connected using an adhesive, by welding the components together, or other suitable technique.
- the nozzle assembly 240 may also be molded as a single unitary component.
- the nozzle assemble 240 comprises end components 246 and 248 and a central component 250.
- Each end component 246 and 248 includes one half of the fluid pathways 122 of each of the nozzles 104.
- the other half of the fluid pathways 122 of the nozzles 104 are formed by the central component 250.
- FIG. 9 is a side view of the central component 250 of the nozzle assembly 240 and, therefore, a cross-sectional view of one set of the nozzles 104.
- the inlets 120 of each of the nozzles 104 open to a cavity 252 at the base 254 of the nozzle assembly 240. Water received at the inlet 118 of the nozzle head 102 travels through the nozzle head 102 to the cavity 252 where it is provided to inlets 120 of the nozzles 104.
- one or more of the nozzles 104 includes a curved section 260 and a straight section 262.
- the curved section 260 extends from the inlet 120 to a location 264 between the inlet 120 and the outlet 124.
- the straight section 262 extends from the location 264 to the outlet 124.
- FIG. 10 is a simplified diagram of a sprinkler system 270 in accordance with embodiments of the invention.
- the sprinkler system 270 generally includes a plurality of the rotary sprinklers 100 formed in accordance with embodiments of the invention.
- Each of the sprinklers 100 are coupled to a pressurized water supply 272, such as a household water supply, a pumped water supply, or other convention water supply.
- the system comprises a system controller 274 comprising at least one processor 276 and memory 278 (e.g., RAM, ROM, flash memory, or other tangible data storage medium).
- the memory 278 contains program instructions that are executable by the processor to perform method steps described herein.
- the system controller 274 communicates with each of the sprinklers 100 over one or more wired or wireless communication links represented by lines 280 formed in accordance with standard communication protocols.
- the control signals provided over the communication links 280 are generated responsive to the execution of the program instructions in the memory 278 by the processor 276.
- the control signals are communicated over the communication links 280 to controllers 164 of the rotary sprinklers 100.
- the controllers 164 are configured to operate the sprinklers 100 (e.g., set valve positions, rotate the nozzle head, etc.), communicate information (e.g., sensor information) back to the system controller 274, or perform other function responsive to the control signals.
- control signals may be communicated over the communication links 280 directly to the relevant components of the sprinklers 100, such as the motor 162 or the motor 129, for example.
- the outputs 174 from the sensors 172 of the rotary sprinklers 100 may also be communicated over the communication links 280 to the system controller 274.
- control signals comprise valve settings for setting the positions of the one or more valves 160 in each of the controllers 100.
- the system controller 274 may individually activate any one of the rotary sprinklers 100 through the control signals.
- the system controller 274 is capable of activating and deactivating individual rotary sprinklers 100 based on the execution of the watering program instructions stored in memory 278.
- the system 270 includes one or more valves 282 that operate to control the flow of water along one or more of the water lines 110.
- the system controller 274 is configured to control the positioning of the valves 282 using an appropriate control signal over a communication link 284 in accordance with conventional techniques.
- the inclusion of the valves 160 in the rotary sprinklers 100 allow the system controller 274 to activate individual sprinklers 100 within each group of sprinklers 100 fed by the corresponding valve 282.
- the memory 278 comprises a series of valve settings for each of the valves 160 of the sprinklers 100 that map a desired water flow rate through the valve 160 to a valve position, as described above.
- the valve settings may be dynamically set by the controller 274 based on the output signal 174 (flow rate or pressure) from the sensor 172 (or a sensor in the water line 110) and a predefined desired water flow rate through the valve 160.
- the valve settings may be fixed in the watering program stored in the memory 278.
- FIG. 11 is a simplified diagram of a watering system 300 in accordance with systems of the prior art.
- the watering system 300 includes a water supply 272 that is fluidically coupled to multiple sprinklers 302 through a water line 110.
- the sprinklers 302 are typically passive sprinklers, groups of which are activated in response to the opening of a valve 304 in the water line corresponding to the group.
- the system 300 also includes an irrigation controller 306.
- Embodiments of the controller 306 include memory 307 (e.g., ROM, RAM, flash, or other tangible data storage medium) and at least one processor 308.
- the memory 307 contains zone program instructions that are executable by the processor 308 to control the valves 304 and perform a desired watering operation.
- the irrigation controller 306 generates zone valve signals 310 based on the zone program instructions that open one of the valves 304 of the system 300 responsive to the program instructions using the signals 310.
- the opened valve 304 feeds water to the corresponding group of sprinklers 302 and a watering operation by the group of sprinklers 302 commences.
- the controller 306 closes the valve 304 and opens another valve 304 using the signals 310 to feed water to another group of the sprinklers 302 and commence another watering operation. This is repeated until all the groups of sprinklers 302 perform their watering operation in accordance with the program instructions.
- FIG. 12 is a simplified diagram illustrating such an update to the system 300 depicted in FIG. 11.
- the sprinklers 302 are replaced with sprinklers 100 formed in accordance with embodiments of the invention.
- the system controller 274 is also added. If necessary, wired communication links 280 between the system controller 274 and the rotary sprinklers 100 are installed. Wireless communication links may also be used.
- the system controller 274 is configured to detect the activation of the valves 304 and activate the corresponding sprinklers 100 that are fed by the open valve 304. This detection may occur by intercepting or receiving the signal 310 transmitted by the irrigation controller 306 to the valve 304. Alternatively, the system controller 274 may detect the rise in pressure in the water line 110 using the sensor 172 within one or more of the sprinklers 100, or a pressure sensor that is installed in the line 110. Upon detection of the opening of the valve 304, the system controller 274 activates the corresponding sprinklers 100 and the watering operation commences. This is repeated for each of the groups of sprinklers 100 in the system.
- each of the sprinklers 100 include at least one valve 160 to control the flow of water through the sprinkler 100.
- the valves 304 are no longer needed in the system.
- the valves 304 are removed from the system or left in their opened position.
- the signal 310 is then directed to the controller 274, and the controller 274 controls the valves 160 in the sprinklers 100 to perform the desired watering operation.
- the system controller 274 can also detect when the irrigation controller 306 closes one of the valves 304 using the same techniques described above. When the closing of the valve 304 is detected, the system controller 274 deactivates the one or more sprinklers 100 being fed water by the valve 304. In accordance with a more specific embodiment, the system controller 274 provides power and control signals to the one or more sprinklers 100 through one or more wired connections 280 to the sprinklers 100. The power may be used to charge a capacitor or other power supply 175. Upon initial detection of the opening of one of the valves 304, the system controller 274 turns on the power to the corresponding one or more sprinklers 100 being fed water by the opened valve 304.
- the sprinklers 100 are initially turned on for a set period of time to charge up the power supply 175.
- the system controller 274 then sends a command to the one or more sprinklers 100, which is acknowledged by the controllers 164 of the sprinklers 100.
- the system controller 274 sends watering instructions to each of the one or more sprinklers 100 in the group.
- the one or more sprinklers 100 in the group acknowledge receipt of the watering instructions.
- the system controller 274 then activates the group of sprinklers 100 and each of the sprinklers 100 in the group begins to execute their watering instructions.
- the system controller 274 sends a command to the one or more sprinklers 100 in the group to stop the watering operation and the controllers 164 of the sprinklers 100 acknowledge receipt of the instruction.
- the system controller 274 then provides sufficient power for each of the sprinklers 100 in the group to close their one or more valves 160 before deactivating the sprinklers 100 in the group. This process is then continued for each group of one or more sprinklers 100 associated with each of the valves 304.
- the location of the nozzles 104 may be changed from that depicted herein. That is, while the depicted embodiments generally illustrate the nozzles 104 being vertically aligned, the nozzles 104 may be angularly displaced from each other about the vertical axis of the nozzle head. Other configurations are also possible.
Landscapes
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US36560010P | 2010-07-19 | 2010-07-19 | |
PCT/US2011/044337 WO2012012318A2 (en) | 2010-07-19 | 2011-07-18 | Multi-nozzle rotary sprinkler |
Publications (2)
Publication Number | Publication Date |
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EP2595756A2 true EP2595756A2 (en) | 2013-05-29 |
EP2595756B1 EP2595756B1 (en) | 2021-09-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11738361.2A Active EP2595756B1 (en) | 2010-07-19 | 2011-07-18 | Multi-nozzle rotary sprinkler |
Country Status (3)
Country | Link |
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EP (1) | EP2595756B1 (en) |
AU (1) | AU2011279849A1 (en) |
WO (1) | WO2012012318A2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10232395B2 (en) | 2010-07-19 | 2019-03-19 | Irrigreen, Inc. | Multi-nozzle rotary sprinkler |
AU2013243915B2 (en) * | 2012-04-06 | 2015-07-16 | Irrigreen, Inc. | Method of controlling a rotary sprinkler |
WO2017015118A1 (en) | 2015-07-22 | 2017-01-26 | Irrigreen, Inc. | Irrigation system |
CN106070160A (en) * | 2016-08-26 | 2016-11-09 | 贵州驰远智能控制有限公司 | A kind of separate type automatic spraying device |
US11219912B2 (en) | 2018-05-24 | 2022-01-11 | Deere & Company | Plugged sprayer/spreader detection using electromagnetic radiation |
US11241004B2 (en) | 2018-05-24 | 2022-02-08 | Deere & Company | Plugged spray nozzle detection using radio-frequency transmissions |
US10842143B2 (en) | 2018-10-12 | 2020-11-24 | Deere & Company | Multi-fluid spray system and method for agricultural product application |
US11051505B2 (en) * | 2018-10-12 | 2021-07-06 | Deere & Company | Multi-fluid spray system and method for agricultural product application |
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US2884202A (en) * | 1956-04-11 | 1959-04-28 | Lloyd B Smith | Lawn sprinkler |
US3149784A (en) * | 1962-06-15 | 1964-09-22 | Donald G Griswold | Long-range rotary water sprinkler |
US3452930A (en) * | 1967-06-23 | 1969-07-01 | Leisure Group Inc | Pattern sprinkler |
EP0301367A2 (en) * | 1987-07-31 | 1989-02-01 | GARDENA Kress + Kastner GmbH | Sprinkling device |
WO1997002897A1 (en) * | 1995-07-07 | 1997-01-30 | Gilmour, Inc. | Rotary sprinkler and base |
US5598977A (en) * | 1995-02-07 | 1997-02-04 | Anthony Manufacturing Corporation | Rotary irrigation sprinkler nozzle with improved distribution |
US6332581B1 (en) * | 2000-09-01 | 2001-12-25 | The Toro Company | Rotary sprinkler nozzle |
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IL154067A0 (en) * | 2003-01-21 | 2003-07-31 | Kobi David | Sprinkler system |
US7708206B2 (en) * | 2004-12-22 | 2010-05-04 | Norman Ivans | Irrigation unit including a nozzle having greater accuracy and improved adjustment properties |
US20070221750A1 (en) * | 2006-03-10 | 2007-09-27 | Roberts Harold J | Electronic sprinkler system |
ITVR20070005A1 (en) * | 2007-01-09 | 2008-07-10 | Mario Zannetti | IRRIGATION SYSTEM PARTICULARLY FOR GARDENS OR SIMILAR |
US20090065606A1 (en) * | 2007-09-10 | 2009-03-12 | Feng-Nien Lee | Remote-Controlled Electric Sprinkler |
-
2011
- 2011-07-18 AU AU2011279849A patent/AU2011279849A1/en not_active Abandoned
- 2011-07-18 WO PCT/US2011/044337 patent/WO2012012318A2/en active Application Filing
- 2011-07-18 EP EP11738361.2A patent/EP2595756B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2884202A (en) * | 1956-04-11 | 1959-04-28 | Lloyd B Smith | Lawn sprinkler |
US3149784A (en) * | 1962-06-15 | 1964-09-22 | Donald G Griswold | Long-range rotary water sprinkler |
US3452930A (en) * | 1967-06-23 | 1969-07-01 | Leisure Group Inc | Pattern sprinkler |
EP0301367A2 (en) * | 1987-07-31 | 1989-02-01 | GARDENA Kress + Kastner GmbH | Sprinkling device |
US5598977A (en) * | 1995-02-07 | 1997-02-04 | Anthony Manufacturing Corporation | Rotary irrigation sprinkler nozzle with improved distribution |
WO1997002897A1 (en) * | 1995-07-07 | 1997-01-30 | Gilmour, Inc. | Rotary sprinkler and base |
US6332581B1 (en) * | 2000-09-01 | 2001-12-25 | The Toro Company | Rotary sprinkler nozzle |
Also Published As
Publication number | Publication date |
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AU2011279849A1 (en) | 2013-02-21 |
WO2012012318A3 (en) | 2012-05-10 |
WO2012012318A2 (en) | 2012-01-26 |
EP2595756B1 (en) | 2021-09-01 |
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