HYDROPONICS

Abstract

The invention relates to a planter forming part of a hydroponic system. The planter includes a longitudinal body defining at least two longitudinally extending liquid channels and at least two plant holders defined in the body, the plant holders spaced on the outer circumference of the longitudinal body, each one of the at least two plant holders in fluid flow communication with one of the at least two longitudinally extending liquid channels.

Claims

1. A planter comprising: a longitudinal body defining at least two liquid channels, the at least two liquid channels comprising: a first liquid channel having a first channel inlet opening and a first channel outlet opening, a first flow path of the first liquid channel extends from the first channel inlet opening to the first channel outlet opening; and a second liquid channel that is distinct from the first liquid channel; and at least two plant holders defined in the longitudinal body and spaced apart on the longitudinal body, where each of the at least two liquid channels are in fluid communication with a corresponding plant holder of the at least two plant holders.

2. The planter of claim 1, where the longitudinal body includes a first portion and a second portion, and where at least one planter holder is formed when the first portion and the second portion are connected together.

3. The planter of claim 1, where the first portion and the second portion, when connected together, cooperate to define the first liquid channel and the second liquid channel.

4. The first portion and the second portion, when connected together, cooperate to define the at least two plant holders.

5. The planter of claim 1, in which each plant holder has a corresponding mouth, and in which the planter includes an external attachment formation associated with each plant holder for attaching a plant support, the attachment formation is located below the plant holder mouth, and the plant support is in the form of a creeper trellis arranged to support a creeper plant, planted in the plant holder when it grows from the plant holder mouth.

6. The planter of claim 1, in which the planter includes planting inserts shaped and dimensioned to fit into mouths of the at least two plant holders, and in which the planting inserts are selected from any one or more of: a seedling tray, a planting tray and a seeding clip.

7. The planter of claim 1, where the longitudinal body includes a divider configured to divide at least a portion of a longitudinal conduit of the longitudinal body into the at least two liquid channels.

8. The planter of claim 1, further comprising: at least one longitudinally extending gas channel, the gas channel having gas outlets between a first end of the longitudinal body and a second end of the longitudinal body; or a first connecting formation at a first end of the longitudinal body, and a second connecting formation at a second end of the longitudinal body, the second end opposite the first end.

9. The planter of claim 1, where: the first liquid channel includes a first liquid channel portion that extends from a first end to a first inlet of a first plant holder of the at least two plant holders; the second liquid channel includes a second liquid channel portion that extends from the first end to a second inlet of a second plant holder of the at least two plant holders; the first liquid channel includes a third liquid channel portion that extends from a first outlet of the first plant holder toward a second end of the longitudinal body, the second end opposite the first end; and the second liquid channel includes a fourth liquid channel portion that extends from a second outlet of the second plant holder toward the second end.

10. The planter of claim 9, where: the third liquid channel extends from the first outlet of the first plant holder to the second end of the longitudinal body; and the fourth liquid channel extends from the second outlet of the second plant holder to the second end of the longitudinal body.

11. The planter of claim 1, where: each plant holder includes an inlet opening and an outlet opening; each of the at least two plant holders includes a plant holder inlet opening located above a plant holder outlet opening to permit gravitational liquid flow into the plant holder through the plant holder inlet opening and liquid flow from the plant holder through the plant holder outlet opening; and at least one of the at least two plant holders is in fluid flow communication with one of the at least two liquid channels via the plant holder inlet opening and plant holder outlet opening.

12. A planter tower comprising a plurality of planters coupled together to form an elongate upright planter with plant holders extending from sides of the planter tower, the plurality of planters comprising at least one planter as claimed in claim 1.

13. The plant tower of claim 12, where the at least two plant holders include at least three plant holders defined in the longitudinal body, each one of the at least three plant holders in fluid flow communication one of the at least two liquid channels.

14. The planter tower of claim 12, further comprising at least one end member shaped and dimensioned to connect onto an end of the plurality of planters connected together.

15. The planter tower of claim 14, where the at least one end member comprises: a top end member attached at a top end of the plurality of planters connected together, the top end member configured to direct liquid toward the first liquid channel and the second liquid channel; or a bottom end member attached at a bottom end of the plurality of planters connected together, the bottom end member configured to direct liquid from the first liquid channel and the second liquid channel.

16. A greenhouse comprising an array of planter towers, at least one of the plant towers including at least one planter as claimed in claim 1.

17. The greenhouse of claim 16, further comprising: a liquid circulation system coupled to the first liquid channel and the second liquid channel; and a nutrient supply dosing pump connected to the liquid circulation system and configured to provide nutrients into the liquid circulation system; or a filter connected to the liquid circulation system and configured to filter a liquid of the liquid circulation system.

18. A method comprising: providing a planter comprising: a longitudinal body defining at least two liquid channels, the at least two liquid channels comprising: a first liquid channel having a first channel inlet opening and a first channel outlet opening, a first flow path of the first liquid channel extends from the first channel inlet opening to the first channel outlet opening; and a second liquid channel that is distinct from the first liquid channel; and at least two plant holders defined in the longitudinal body and spaced apart on the longitudinal body, where each of the at least two liquid channels are in fluid communication with a corresponding plant holder of the at least two plant holders; and providing a fluid via the first liquid channel, the second liquid channel, or a combination thereof.

19. The method of claim 18, further comprising: coupling a first portion of the longitudinal body and a second portion of the longitudinal body to form at least one planter holder of the at least two plant holders; coupling the planter to a second planter to form a first planter tower; or a combination thereof.

20. The method of claim 19, further comprising: coupling the planter to a second planter to form a first planter tower; and coupling the first planter tower to a second planter tower to form an array of planter towers.

Description

DRAWINGS

[0046] In the drawings:

[0047] FIG. 1a and 1b show three-dimensional views of a planter in accordance with one aspect of the invention;

[0048] FIGS. 2a and 2b show two halves of the planter of FIG. 1;

[0049] FIG. 3 shows a planter tower comprising assembled planters of FIG. 1;

[0050] FIGS. 4a and 4b show three-dimensional views of an end member of a planter arrangement;

[0051] FIG. 5 shows a seedling tray of a planter;

[0052] FIG. 6 shows a planting tray of a planter;

[0053] FIG. 7 shows a creeper trellis of a planter;

[0054] FIG. 8 shows a seeding clip of a planter arrangement; and

[0055] FIG. 9 shows a hydroponic greenhouse in accordance with a further aspect of the invention.

EMBODIMENT OF THE INVENTION

[0056] In FIG. 1 a planter 10, in accordance with one aspect of the invention, is shown. The planter 10 has a longitudinal body 12, in two halves 12.1 and 12.2, as best shown in FIGS. 2a and 2b.

[0057] The longitudinal body 12 defines two longitudinally extending liquid channels 14.1 and 14.2 as shown in FIGS. 1 and 2.

[0058] The planter 10 includes two plant holders 16, 18 defined on the outer circumference of the longitudinal body. As can be seen in FIG. 2, the two plant holders 16, 18 have openings 16.1, 18.1 defining liquid inlets to the plant holders and 16.2, 18.2 defining liquid outlets from the plant holders.

[0059] As can be seen in FIGS. 1 and 2, the plant holders 16, 18 have holder mouths in the form of aplanated cylindrical ellipses.

[0060] As can be seen in FIGS. 1 and 2, the two plant holders 16, 18 are alternatively spaced on opposed sides of the longitudinal body.

[0061] In FIGS. 1 and 2, it can be seen that the longitudinal body has connecting formations 20, 22 in the form of socket and spigot formations at the ends of the longitudinal body 12. As can be seen in FIG. 3, the connecting formations are shaped and dimensioned to fit into respective spigot and socket formations of corresponding planters.

[0062] Importantly the operative lower end of the longitudinal body 12 of the planter 10 has a spigot formation 22, for fitting into a socket formation 20 on an operative upper end of a longitudinal body 12 of a corresponding planter 10 installed below the former planter.

[0063] As can be seen in FIG. 2, each plant holder 16, 18 has an inlet opening 16.1, 18.1 and an outlet opening 16.2, 18.2, respectively, which forms part of its corresponding liquid channel 14.2 and 14.1, respectively. As can be seen, the inlet openings 16.1, 18.1 are located above the outlet openings 16.2, 18.2 to permit liquid to flow into the plant holders 16, 18 through the inlet openings 16.1, 18.1 and from the plant holder through the outlet opening 16.2, 18.2.

[0064] As can be seen in FIG. 2, each plant holder 18 comprises two halves, which defines a complete plant holder, when connected to each other.

[0065] The planter 10 further includes a longitudinally extending gas channel 24. The gas channel 24 has outlets spaced along its length. In particular, the gas channel 24 has outlets 26 that open to the outside of the planter body 12 (see FIG. 3). The gas outlets 26 are in the form of nozzles, when the planters are assembled in an array as shown in FIG. 9, the nozzles are directed at plants in adjacent planter towers, to ensure adequate gas exchange on the leaves of those plants.

[0066] As can be seen in FIG. 1, the planter has an external attachment formation 28 proximate the plant holder mouth for attaching plant supports. One example of such a plant support is a plant trellis 30, shown in FIG. 7, which has a corresponding attachment formation 32, which can fit into the attachment formation 28, spigot and socket fashion. The creeper trellis 30 is arranged to support a creeper plant (not shown), planted in the plant holder when it grows from the plant holder mouth 16, 18.

[0067] The planter 10 also has external attachment formations in the form of apertures 34, for holding wire, line or cables that can provide additional structural strength to the planter assembly 50 or to provide a structure onto which creepers can grow.

[0068] Each planter 10 also includes planting inserts (as shown in FIGS. 5, 6 and 8) shaped and dimensioned to fit onto mouths of the plant holders 16, 18. The planting inserts are selected from: a seedling tray, a planting tray and a seeding clip. The planting inserts may be selected based on its suitability for a specific plant.

[0069] In FIG. 5 a seedling tray 60 is shown, which is shaped and dimensioned to fit into a mouth of a plant holder 16, 18. The seedling tray 60 has a depth of about 43 mm. The seedling tray 60 has an inlet opening 60.1 indexed with the inlet openings 16.1, 18.1 of the plant holder. The seedling tray 60 has a planar base cut in sections to provide drainage slits 60.2. The drainage slits 60.2 are less than 0.5 mm in width to permit liquid drainage without flushing seedlings from the seedling tray 60.

[0070] In FIG. 6 a planting tray 70 is shown, which is shaped and dimensioned to fit into a mouth of a plant holder 16, 18. The planting tray 70 has a depth of about 117 mm and is in the form of a cylindrical body shaped to the shape of the plant holder 16, 18. The planting tray 70 includes an inlet opening 70.1 indexed with the inlet openings of the plant holder 16.1, 18.1. The planting tray 70 has a planar base cut in sections to provide drainage slits. A portion of the planting tray sidewall also has drainage slits 70.2. The portion of the sidewall is slightly tapered towards the base. The drainage slits is less than 0.5 mm in width to permit liquid drainage without flushing seedlings from the seedling tray 70.

[0071] In FIG. 8 a seeding clip 80 is shown. The seeding clip 80 is shaped to fit onto the mouth of a plant holder 16, 18. The seeding clip 80 has a planar body for closing the planter mouth and is provided with a downwardly projecting plate 80.2 and a slot 80.3 shaped to engage the stem of a plant. The seeding clip 80 further includes finger projections 80.1, which can be compressed towards each other for removing the seeding clip 8 from the mouth of the plant holder 16, 18.

[0072] FIG. 3 shows a planter tower 50 in accordance with a further aspect of the invention. In this example the planter tower 50 includes two planters 10.1, 10.2 as described, connected together to form an elongate upright planter, with plant holders 16, 18 extending from the sides of the planter tower 50 (It is to be appreciated that in a preferred embodiment a planter tower would include about eight planters connected together as shown in FIG. 9).

[0073] The planter tower 50 is provided with two end members 52, as best shown in FIG. 4, (not mounted in FIG. 4) shaped to fit socket and spigot fashion onto a top or bottom end of a longitudinal body 12 of a planter 10.

[0074] The end members 52 have dual liquid conduits 54, 56 indexed to match the longitudinally extending liquid channels 14.2, 14.1. The end members 52 also each has a gas conduit 58 indexed to match the gas channel 24 extending through the planters.

[0075] The end members 52 each has a body with two sides, an upper side which is provided with a socket formation 52.1 and a bottom side which is provided with a spigot formation 52.2 for fitting onto matched spigot-22 and socket-20 formations on the ends of the longitudinal body 12 of the planters 10. The upper and bottom sides further includes a recessed cradle formation for receiving a top liquid and gas supply line (as shown in FIG. 9) and a bottom liquid and gas collection line across the end members. In this example the upper cradle formation is dimensioned to fit a 50 mm to 65 mm pipe and the bottom cradle formation is dimensioned to fit a 110 mm to 160 mm pipe.

[0076] In this example the planter tower 50 includes a top end member 52 for connecting to the top end of the plurality of planters 10.1, 10.2 and a bottom end member 52 for connecting to the bottom end of the plurality of planters 10.1, 10.2. The top end member 52 and bottom end member 52 are identical in shape and dimension, but function as an intake closure 52 and outlet closure 52 respectively.

[0077] The intake closure 52 attached at a top end of a plurality of interconnected planters, being operable to direct liquid into the two longitudinally extending liquid channels 14.1, 14.2 and for directing gas into the longitudinally extending gas channel 24.

[0078] The outlet closure 52 attached at a bottom end of a plurality of interconnected planters, being operable to direct liquid out from the two longitudinally extending liquid channels 14.1, 14.2.

[0079] The liquid channels 14.1, 14.2 and gas channel 24 extend over the length of the inter-connected planters 10.

[0080] The bottom side of the end members 52 also includes a catchment tray 57 on the outer perimeter of the end members. When the end member 52 is used as a bottom end member, the catchment tray 57 is operable to receive overflow liquid from the planter tower 50.

[0081] As can be seen in FIG. 3, the plant holders 16, 18 which are alternatively spaced on opposed sides over the length of the of the planter tower 50, provide for maximum space and access to sunlight for the plants. Furthermore, with the roots growing downwardly, possibly into the liquid channels 14.1, 14.2, maximum provision is made for root growth, without interference from plants directly below or above any planter.

[0082] FIG. 9 shows a hydroponic greenhouse 100 in accordance with yet a further aspect of the invention. The hydroponic greenhouse 100 includes an array of planter towers as described. In this figure only one row of planter towers 50.1 to 50.10 are shown (for illustrative purposes), however in practice the hydroponic greenhouse includes a plurality of parallel spaced planter tower rows.

[0083] The rows being provided with a top liquid and gas supply line 102, connected via an intake closure 52 to a top of each of the planter towers 50. The rows are further provided with a bottom liquid and gas collection line 103, connected via an outlet closure 52 to a bottom of each of the planter towers 50.

[0084] The hydroponic greenhouse 100 includes a liquid circulation system (not shown), connected to the liquid supply lines 102 and the liquid collection lines 103 and a gas circulation system (not shown), connected to the gas supply lines 102 and the gas collection lines 103.

[0085] In this example the top liquid and gas supply line 102 includes a 50 mm to 65 mm diameter plastic outer pipe, onto which the top end members 52 of each planter tower 50 in the row is attached. The 50 mm to 65 mm diameter plastic outer pipe includes interspaced apertures through which liquid and gas is fed into the planter towers 50. The top end members (inlet closures) 52 are secured to the pipe via connectors. In this example the connectors are in the form of cable ties (not shown), which are threaded through connector apertures 59 on the end members 52.

[0086] In this example the bottom liquid and gas collection line 103 includes a 110 mm to 160 mm diameter plastic outer pipe, onto which the bottom end members (outlet closures) 52 of each planter tower 50 in the row is attached. The 110 mm to 160 mm diameter plastic outer pipe includes interspaced apertures through which liquid and gas is received from the planter towers 50. The bottom end members 52 are secured to the pipe via connectors. In this example the connectors are in the form of cable ties (not shown), which are threaded through connector apertures 59 on the end members 52.

[0087] The hydroponic greenhouse includes a partially closed enclosure (not shown), which is provided with any one or more of: air conditioners, high pressure fans, dampers, coiled coolers for recirculation of the liquid or gas from the liquid collection lines to the liquid supply lines or alternatively gas supply lines, geothermal heater/coolers, heat pumps, humidity controllers and infra-red controllers.

[0088] The hydroponic greenhouse is also provided with a nutrient supply dosing pump (not shown) connected to the liquid circulation system for dosing nutrients into the liquid circulation system.

[0089] The hydroponic greenhouse is further provided with a filtering arrangement (not shown) connected to the liquid circulation system for filtering the liquid in the liquid circulation system.

[0090] The inventors are of the opinion that the invention as described provides a new planter, a planter tower and a hydroponic greenhouse.