JPWO2018181848A1 - Hydroponics unit and hydroponics system including this hydroponics unit - Google Patents

Abstract

An object of the present invention is to provide a hydroponic cultivation unit and a hydroponic cultivation system that can improve the cultivation yield, and at the same time, have both low cost and high workability and cleanability. A hydroponic cultivation unit according to the present invention includes a plurality of mutually detachable tubular divided bodies, a cultivation cylinder having at least one opening on a side surface thereof, and an opening at one end where plants are arranged. And a planting member having an opening of the cultivation tube and a detachable other end opening. [Selection diagram] Fig. 1

Description

  The present invention relates to a hydroponic cultivation technique for cultivating a plant, and more particularly to a hydroponic cultivation unit for planting the plant and a hydroponic cultivation system including the hydroponic cultivation unit.

  In developed countries such as the Netherlands and Japan, the introduction of electronics to conventional agriculture is making progress in dramatically improving the efficiency of crop production. For example, in recent years, in an indoor environment such as a greenhouse or a factory building, planned plant cultivation and cultivation has been performed in an area partitioned by a planter or the like.

Such methods of plant cultivation in an indoor environment can be roughly classified into two types, for example.
First, as a first form, for example, a hydroponics (DTF) or a thin film hydroponics (NFT) in which plants are cultivated and cultivated side by side as exemplified in Patent Literature 1 and Patent Literature 2, for example. It is called technique. One of the features of this method is that a plant having a relatively large area is required because the plants are arranged in a form extending in the horizontal direction.

  On the other hand, another second form is a technique called vertical hydroponics in which plants are cultivated and grown by juxtaposing plants in the direction of gravity, that is, in the vertical direction, as exemplified in Patent Documents 3 and 4, for example. . The feature of this method is that plants are arranged in a vertical direction (sometimes in an oblique direction) via a rod or a plate material, so that a building having a relatively small area can be used.

  Although each of these two forms has advantages and disadvantages, the vertical hydroponic method has a high production efficiency per unit area in that the vertical space can be effectively used. Therefore, a vertical hydroponic system having various members and structures has been proposed in addition to the above-mentioned patent documents.

JP 2015-62386 A JP-A-2017-12066 JP 2004-329060 A JP 2011-24543 A

  However, existing technologies including the above-mentioned patent documents do not sufficiently satisfy market needs, and it can be said that there is still room for improvement in at least the following points.

  That is, since the above-mentioned vertical hydroponic method has an advantage of high production efficiency per unit area, plants are juxtaposed along the vertical direction. If this idea is extended, the equipment for planting plants necessarily tends to have a higher height in the vertical direction, and it is also necessary to have good workability such as planting and harvesting plants.

  In addition, a liquid containing moisture and nutrients is essential for growing a plant, and such a liquid needs to be supplied to the plant when necessary. As described above, the vertical hydroponic method has the advantage of high production efficiency, so that the shape of the equipment is complicated, and if the cleaning of the equipment is troublesome, the equipment will fall over.

  As described above, the vertical hydroponic system has a great merit to be obtained. However, in the conventional technologies including the above-mentioned patent documents, a structure that improves the cultivation yield, and at the same time, achieves both low workability and high workability at a low cost is still proposed. It has not been.

  The present invention has been made in view of an example of solving such a problem, and has been made to improve a cultivation yield, and at the same time, a hydroponic cultivation unit and a water cultivation unit that are both low in cost and high in workability and washability. It aims to provide a cultivation system.

  In order to solve the above-mentioned problems, a hydroponic cultivation unit according to an embodiment of the present invention includes (1) a plurality of mutually detachable tubular divided bodies having at least one opening on a side surface thereof. It is characterized by including a planting member provided with a cultivation tube, an opening at one end where a plant is arranged, and an opening at the other end detachable from the opening of the cultivation tube.

  In the hydroponic cultivation unit according to the above (1), it is preferable that (2) the opening and the other end are fitted by being rotated.

  Further, in the hydroponic cultivation unit according to the above (1) or (2), it is preferable that (3) at least a part of the inclined surface whose inner diameter changes is formed on the inner surface of the cultivation tube.

  Further, in the hydroponic cultivation unit according to any one of the above (1) to (3), (4) the cultivation tube is detachably connected at one end to the cultivation cylinder, and the other end is connected to the hydroponic cultivation unit. A water receiving connecting member detachably connected to a suspending support mechanism for suspending and supporting and having a water receiving opening on a side surface; and a liquid supply system detachably connected to the water receiving opening and supplying liquid from a liquid supply system. And a water receiving member for receiving the water.

  Further, in the hydroponic cultivation unit according to the above (4), (5) further comprising a guide tube detachably connected to a lower end of the cultivation tube and guiding a liquid flowing inside the cultivation tube. Is preferred.

  In the hydroponic cultivation unit according to any one of (1) to (5), (6) the planting member is provided at least above the opening on the inner peripheral surface of the cultivation cylinder. It is preferable that a groove for guiding the liquid to the side is formed.

  Further, in the hydroponic cultivation unit according to any one of the above (1) to (6), (7) a part of the other end opening protrudes inside the cultivation cylinder when connected to the cultivation cylinder. It is preferable that the other end opening of the planting member is cut obliquely so that a water receiver is formed.

  Further, in the hydroponic cultivation unit according to any one of (1) to (7), (8) the plant is prevented from falling out between one end opening and the other end opening of the planting member. It is preferable that a slip-off prevention part is formed.

In the hydroponic cultivation unit according to any one of (1) to (8), (9) a cutout portion into which a cutting tool can be inserted is formed at one end opening of the planting member. preferable.
Further, in the hydroponic cultivation unit according to any one of (1) to (9), (10) the planting member has a connecting portion for connecting to the tubular divided body, and the planting member Is preferably positioned at a height equal to or higher than a horizontal plane passing through the uppermost portion of the connection portion.
In the hydroponic cultivation unit according to any one of (1) to (10), (11) the planting member preferably has a tongue that forms at least a part of the one end opening.

Furthermore, in order to solve the above problems, a hydroponic cultivation system according to an embodiment of the present invention includes the hydroponic cultivation unit according to any one of (1) to ( 11 ) above and the hydroponic cultivation unit. It is characterized by including a hanging support mechanism for supporting, and a liquid supply system for supplying necessary liquid to plants planted in the hydroponic cultivation unit.

  According to the present invention, the cultivation yield can be improved because a plurality of plants are cultivated at a high density by connecting the detachable cylindrical divided bodies in a vertical direction or the like. Furthermore, it is only necessary to install an arbitrary number of cylindrical divided bodies and planting members in accordance with the building, and since they can be individually washed at the time of washing, it is possible to achieve both low cost and high workability and cleanability. Becomes possible.

It is a mimetic diagram showing appearance of hydroponic cultivation system 100 concerning one embodiment of the present invention. It is a mimetic diagram showing appearance of hydroponic cultivation unit 20 concerning one embodiment of the present invention. It is a schematic diagram which shows the cultivation cylinder 21 of the hydroponic cultivation unit 20. It is a schematic diagram which shows the planting member 22 of the hydroponic cultivation unit 20. It is a schematic diagram which shows the water receiving connection member 23 of the hydroponic cultivation unit 20. It is a schematic diagram which shows the water receiving member 24 of the hydroponic cultivation unit 20. It is a schematic diagram which shows the guide cylinder 25 in the hydroponic cultivation unit 20. It is the elements on larger scale which show the connection form of the cylindrical division body 21a, and the connection form of the cultivation cylinder 21 and the planting member 22. It is a schematic diagram which shows the cultivation cylinder 21 which concerns on the modification 1. It is a schematic diagram which shows the cultivation cylinder 21 which concerns on the other example of the modification 1. It is a schematic diagram which shows the planting member 22 which concerns on the modification 2. It is a schematic diagram which shows the planting member 22 which concerns on the modification 3. It is a schematic diagram which shows the planting member 22 which concerns on the modification 4. It is a schematic diagram which shows the planting member 22 which concerns on the modification 5. It is a schematic diagram which shows the planting member 22 which concerns on the modification 6. It is a schematic diagram which shows the planting member 22 which concerns on the modification 7. It is a schematic diagram which shows the planting member 22 which concerns on the modification 8. It is a schematic diagram which shows the planting member 22 which concerns on the modification 9. It is a schematic diagram which shows the cultivation cylinder 21 which concerns on the modification 10. It is a schematic diagram (the 1) which shows the water receiving connection member 23 and the water receiving member 24 which concern on the modification 11. It is a schematic diagram (the 2) which shows the water receiving connection member 23 and the water receiving member 24 which concern on the modification 11.

Hereinafter, embodiments for suitably implementing the present invention will be described with reference to the drawings. In each figure, the direction of gravity in which the hydroponic cultivation unit 20 is suspended in the hydroponic cultivation system 100 is referred to as a Z direction, the direction in which the hydroponic cultivation units 20 are arranged is referred to as an X direction, and the Z direction and the X direction. The orthogonal direction is defined as Y for convenience. However, these orientations are for convenience of explanation and do not limit the technical scope of the present invention in any way.
For configurations other than those described in detail below, for example, the hydroponic cultivation system described in Japanese Patent Application No. 2016-120846 may be appropriately referred to.

[Hydroculture system 100]
FIG. 1 is a diagram schematically illustrating an appearance of a hydroponic cultivation system 100 according to the present embodiment. As shown in the figure, the hydroponic cultivation system 100 includes a frame 10, a hydroponic cultivation unit 20, a suspension support mechanism 30, a liquid supply system 40, and a liquid receiving bed 50.

  The hydroponic cultivation system 100 of the present embodiment is suitable for cultivation of various plants. Cultivation of fruits or fruits such as strawberries, melons and watermelons is particularly suitable.

  The hydroponic cultivation system 100 may further include a light source 60 that emits light necessary for growing a plant. As the light source 60, various known light sources may be applied. For example, an LED or the like that can generate light having a desired wavelength is suitable.

  Known wavelengths necessary for growing plants can be applied as the wavelength of the light to be irradiated, and examples thereof include UV-B light for insect repellent use and UV-A light for growth promotion use. Instead of or in addition to the above light source, a light duct or a skylight for guiding natural light to an arbitrary location may be provided.

  The frame 10 has a function of supporting a hanging support mechanism 30 described later on a top surface and accommodating the hydroponic cultivation unit 20, the liquid supply system 40, the liquid receiving bed 50, and the like in an accommodation space formed therein. are doing.

  The material of the frame 10 is not particularly limited, and examples thereof include known steel materials and hard resins. Further, the frame 10 may be framed with a rod-shaped steel material, or the above-described accommodation space may be constructed with a flat plate material or the like.

  The hydroponic cultivation unit 20 is suspended and supported by a suspension support mechanism 30 described later in the accommodation space of the frame 10 described above. As will be described later, seedlings P of the above-described plant to be cultivated are transplanted to the planting member 22 in the hydroponic cultivation unit 20. In other words, the interior of the planting member 22 has a hollow shape, and the internal space is a nursery for the seedlings P. The seedlings P to be transplanted to the planting member 22 may have a form in which, for example, a sponge S described later is provided as a part of a nursery bed.

In the present embodiment, the plurality of hydroponic cultivation units 20 are suspended in the frame 10, but the present invention is not particularly limited to this mode, and it is sufficient that at least one hydroponic cultivation unit 20 is provided.
The specific structure of the hydroponic cultivation unit 20 of the present embodiment will be described later in detail with reference to another drawing.

The suspension support mechanism 30 has a function of suspending and supporting at least one hydroponic cultivation unit 20. The suspension support mechanism 30 is fixed to the top surface of the frame 10 via a known fixing member such as a bolt.
In the present embodiment, since a plurality of hydroponic cultivation units 20 are arranged side by side in the X direction, they are installed on the top surface of the frame 10 so as to extend in the X direction.

  The specific mechanism of the suspension support mechanism 30 is not particularly limited as long as the hydroponic cultivation unit 20 can be suspended and supported. In the present embodiment, as such a mechanism, for example, an engagement pin and an engagement rod that can be inserted into the other end 23b of the water receiving connection member 23 described later are employed. However, the present invention is not limited to this form. For example, a hook may be provided at the other end 23b, and the hanging support mechanism 30 may include a fastener corresponding to the hook.

  Moreover, the suspension support mechanism 30 of the present embodiment may be configured such that the suspended hydroponics unit 20 can move in the X direction. More specifically, the above-mentioned member connected to the other end 23b of the water receiving connection member 23 is placed on a slide rail or a guide rail, and the member is connected to a known ball screw mechanism to thereby make it possible to move in the X direction. May be movable. As for the moving mechanism in the X direction, for example, the transport mechanism 3 and the sliding mechanism disclosed in Japanese Patent Application No. 2016-120846 may be appropriately incorporated.

  Further, as described later, the liquid supply system 40 may be configured to be able to supply a different liquid for each location. In this case, the hydroponic cultivation unit 20 can be moved in the X direction and the liquid supply system 40 can supply a different nutrient solution for each supply location. Can be supplied.

  Further, in this case, for example, the pitch of the ball screws described above may be different in the transport direction (X direction). For example, when the left end of the suspension support mechanism 30 in FIG. 1 is the planting side and the right end is the harvesting side, even if the thread groove of the ball screw is cut so that the pitch increases from the planting side to the harvesting side. Good.

  The liquid supply system 40 has a function of supplying a liquid such as water or nutrient necessary for growing the plant P planted in the hydroponic cultivation unit 20, and includes a liquid supply pipe 41, a valve 42, a supply unit 43, and a pump 44. , And a drain pipe 45. Further, as described above, the type and amount of the liquid supplied from the supply unit 43 may be different in the X direction.

  In this case, for example, the plurality of supply units 43 arranged in the X direction are divided into several zones from the planting side to the harvest side, and liquids having different components and concentrations are supplied from the supply unit 43 in each zone. You may. In this case, the liquid feed pipe 41, the valve 42, or the liquid receiving bed 50 may also be divided corresponding to the zone.

  The liquid receiving bed 50 is a container that receives surplus liquid after flowing through each hydroponic cultivation unit 20. The liquid receiving bed 50 is connected to the liquid sending pipe 41 and the drain pipe 45 described above. Although a predetermined volume of the above liquid is stored in the liquid receiving bed 50, unnecessary liquid may be discharged through the valve 42b and the drain pipe 45 as necessary.

  Therefore, the liquid necessary for growing the plant flows through the liquid feed pipe 41 via the valve 42a and the pump 44, and is supplied from each supply unit 43 to the water receiving member 24 described later. Then, the liquid supplied to the hydroponic cultivation unit 20 via the water receiving unit 24 is returned to the liquid receiving bed 50 thereafter.

  Thus, in the hydroponic cultivation system 100 of the present embodiment, the liquid is circulated through the liquid supply system 40, and the liquid can be efficiently supplied to the plant P without waste. I have. In this embodiment, the liquid is circulated using the liquid receiving bed 50. However, the present invention is not limited to this mode, and the liquid may be circulated without being circulated.

[Detailed structure of hydroponic cultivation unit 20]
Next, the detailed structure of the hydroponic cultivation unit 20 will be described with reference to FIGS.
First, as shown in FIG. 2, the hydroponic cultivation unit 20 in the present embodiment has at least a cultivation tube 21 and a planting member 22, and further includes a water receiving connection member 23, a water receiving member 24, and a guide tube 25. It is composed of

  Although there is no particular limitation on the material of each of these members, for example, polyethylene, polypropylene, ABS resin, polyvinyl chloride, or the like is applicable. The method of forming each member is not particularly limited, but it is desirable to form the member into a desired shape by known injection molding, for example, from the viewpoint of cost reduction. Further, each member is preferably colored with a white color such as white from the viewpoint of improving the reflectance, but there is no particular limitation on the color to be colored, and it may be uncolored.

  In addition, as is clear from FIG. 2, the planting members 22 are alternately arranged at opposing positions on the lateral side surface (Y direction side) of the cultivation cylinder 21 toward the longitudinal direction (Z direction) of the hydroponic cultivation unit 20. Are located. Further, when a plurality of hydroponic cultivation units 20 are arranged in the X direction, the height of the planting member 22 of the front cultivation tube 21 and the height of the planting member 22 of the rear cultivation tube 21 overlap with respect to the front side surface (X direction side). The arrangement may be staggered so as not to occur. In the case of the above-mentioned staggered arrangement, the water receiving member 24 is arranged on only one side as shown in FIG. 2B so that the water receiving connecting member 23 can be fitted by being turned 180 °. Can also be used. Of course, the present embodiment is not limited to the configuration in which the water receiving members 24 are arranged on only one side, and may have a structure in which the water receiving members 24 are attached to both sides as shown in FIG.

The cultivation cylinder 21 is composed of a plurality of mutually detachable cylindrical divided bodies 21a, and has at least one opening 21b on a side surface thereof. In the present embodiment, the cultivation cylinder 21 is formed by combining the plurality of cylindrical divided bodies 21a. However, the cultivation cylinder 21 is not limited to this form, and the cultivation cylinder 21 may be configured by one cylindrical divided body 21a.
The inside of the cultivation tube 21 composed of the plurality of cylindrical divided bodies 21a has a hollow shape, and the liquid supplied from the liquid supply system 40 can flow through the inside.

FIG. 3 shows a detailed structure of the cylindrical divided body 21a.
As shown, the tubular divided body 21a has main axis direction (Z direction) the first end portion 21f, respectively on the end portions ₁ and of the second end portion 21f _2. Further, as shown in FIG. 8, the first end 21f ₁ and the second end portion 21f ₂ is made it can be connected by fitting to rotate relative to each other. Incidentally, when the first end portion 21f ₁ and a second end portion 21f ₂ is fitted to rotate, be adapted they are locked in known structures, such as friction-type or hook-type or screw type Good.

Although no particular limitation to the rotation angle of the first end portion 21f ₁ and the second end portion 21f _2, less than one revolution, the embodiments to be fitted for example 45 ° rotation to preferred from the viewpoint of improving workability. Consequently, the first end portion 21f ₁ of one of the tubular divided bodies 21a, ₂ and a second end portion 21f can be effectively connected at the other of the cylindrical divided body 21a, any number or height in the Z direction It is possible to connect only for

  An opening 21b including a pipe branched to the side is formed on a side surface of the cylindrical divided body 21a. In the present embodiment, four openings 21b are formed for one cylindrical divided body 21a. However, the present invention is not limited to this embodiment, and two or any other number of openings 21b may be provided for one cylindrical divided body 21a as long as there is no problem in space.

In the present embodiment, a total of 20 openings 21b are provided as the cultivation cylinder 21 by connecting a total of five cylindrical divided bodies 21a in series (Z direction), but any other than five. You may connect as many as you want.
The inner diameter of the cylindrical divided body 21a can be arbitrarily set depending on the size of the hydroponic cultivation system 100, but may be, for example, about φ20 to 100 mm.

In the present embodiment, the inner diameter of the tubular divided body 21a is preferably as small as possible so that even a small amount of liquid (water or the like) can be easily attached to the inner surface of the cultivation unit 20.
From such a viewpoint, the inner diameter of the tubular divided body 21a is more preferably, for example, about φ24 to 45 mm. It is preferable that the inner diameter of the cylindrical divided body 21a is as small as possible. However, if the inner diameter is smaller than φ20 mm, it is not preferable because the structural strength is lost or the roots of the plant P are clogged.

As shown in FIG. 4, the planting member 22 includes one end opening 22 a in which the plant P (such as a seedling) is arranged (transplanted) and the other end opening 22 b detachable from the opening 21 b of the cultivation tube 21. Have. This planting member 22 also has a hollow inside like the tubular divided body 21a.
As shown in the figure, the one end opening 22a in the present embodiment is a divergent opening (also referred to as a "flapper shape"), which makes it possible to transplant the plant P simply and quickly. .

In the present embodiment, the shape of the one end opening 22a is a divergent circular shape. However, the shape is not limited to this, and may be, for example, a non-divergent cylindrical shape. Good.
Further, as shown in FIG. 4B, the lower end LE of the one end opening 22a passes through the uppermost part of the inner surface where the opening 21b of the tubular divided body 21a and the other end opening 22b of the planting member 22 are fitted. It is preferable to be positioned at a height higher than the horizontal plane HP. With such a shape, it is possible to suppress the liquid from overflowing from the one end opening 22a, and there is an advantage in terms of cleaning equipment and costs.

Further, the inner diameter of the planting member 22 can be arbitrarily set depending on the plant P to be transplanted. Also, the inner diameter of the planting member 22 is preferably smaller than the inner diameter of the tubular divided body 21a.
Furthermore, the thickness (wall thickness of the cylinder) of the planting member 22 is, for example, preferably in the range of 1 to 5 mm, and more preferably 2 to 4 mm. When the thickness is 1 mm or less, the strength is lowered and the durability is poor, so that it is not preferable. On the other hand, if the wall thickness exceeds 5 mm, the planting member 22 becomes heavy and the workability is reduced, and the cost is increased, which is not suitable.

  The angle formed by the planting member 22 and the cultivation tube 21 on the YZ plane is approximately 90 degrees at a portion near the connection point between the planting member 22 and the cultivation tube 21. The planting member 22 connected to the cultivation tube 21 extends from the cultivation tube 21 in the Y direction, is bent at an angle of about 45 degrees from the cultivation tube 21, and is connected to one end opening 22a. That is, the planting angle of the plant P is about 45 degrees in the present embodiment.

  However, the above is an example, and the angle may be set at another angle as long as the plant P does not fall off. For example, the planting member 22 has been extended horizontally (Y direction) so as to be 90 ° from the connection point of the cultivation tube 21, but has an angle in the Z direction upward (less than 90 degrees clockwise from the cultivation tube 21). May extend from the cultivation tube 21 in the Y direction, or may extend in the opposite direction from the cultivation tube 21 in the Y direction at an angle in the Z direction downward (more than 90 degrees clockwise from the cultivation tube 21). .

  In addition, the other end opening 22b in the present embodiment has a shape corresponding to the opening 21b of the above-mentioned tubular divided body 21a. More specifically, as shown in FIG. 8, the opening 21b of the tubular divided body 21a and the other end opening 22b of the planting member 22 are configured to be fitted by rotation. In addition, when the planting member 22 is fitted into the cylindrical divided body 21a by rotation, these may be locked by a known structure such as a friction type, a hook type, or a screw type.

  Therefore, when attaching the planting member 22 to the tubular divided body 21a, for example, the planting member 22 may be rotated by about 10 to 45 ° to fit the opening 21b and the other end opening 22b. As described above, in the present embodiment, since the planting member 22 is rotated by less than one rotation and fitted to the tubular divided body 21a, the efficiency of the operation is extremely high.

As shown in FIG. 8, a draft may be provided between the opening 21b and the other end opening 22b that are fitted to each other. As a result, the connecting portion between the opening 21b and the other end opening 22b becomes detachable and firmly connected, and once these are connected, liquid leakage from the connecting portion can be effectively suppressed.
Further, as shown in the figure, the claw 22g of the other end opening 22b can be provided at an arbitrary position so as to facilitate the connection work with the opening 21b. Further, the length and width of the claw 22g are not particularly limited and may be arbitrary. In this case, it is more preferable that the width of the claw 22g is, for example, about 1/8 to 1/6 of the circumference of the fitting portion. When the planting member 22 is rotated and fitted to the cylindrical divided body 21a, by securing a contact area of the claw 22g with the opening 21b, the connection is strengthened by the frictional force of the contact portion. This is because, as a result, liquid leakage from the connection portion can be suppressed.

Further, the connection between the opening 21b and the other end opening 22b in the present embodiment is based on rotational fitting, but is not limited to this, and may be a screw type.
The location of the opening 21b in the cylindrical divided body 21a may be any position as long as it is on the side surface. For example, when the thickness of the cylindrical divided body 21a is large to some extent, the lowermost tube constituting the cultivation cylinder 21 The bottom (second end 21f ₂ ) of the shape-divided body 21a may also be used as the opening 21b.

  As shown in FIG. 5, the water receiving connecting member 23 is a T-shaped (FIG. 5B) or cross-shaped (FIG. 5A) tubular body extending in the Y direction and the Z direction. Each is configured to include one end 23a, the other end 23b, and a water receiving opening 23c. The water receiving connecting member 23 also has a hollow inside like the tubular divided body 21a. In addition, it is possible to arbitrarily select whether to use the cross-shaped water-receiving connecting member 23 or the cross-shaped water-receiving connecting member 23. You can change it.

Of these, one end 23a which is one end portion extending in the Z direction, for example, has a function which is detachably connected to the first end portion 21f ₂ of the cultivation cylinder 21 described above. One end 23a may be made the same shape as the second end portion 21f ₁ of the cultivation cylinder 21. Thus, one end 23a and the first end portion 21f ₂ of the present embodiment is fitted to rotate. Incidentally, when the one end 23a and the first end portion 21f ₂ fitted rotating, may be adapted they are locked in known structures, such as friction-type or hook-type or screw type.

The other end 23b has a function of being movably connected to a suspension support mechanism 30 that suspends and supports the hydroponic cultivation unit 20. As shown in FIG. 5, the other end 23b of the present embodiment has engaging holes 23b ₁ are formed, the above-mentioned hanging engaging rod and the engaging pin provided on the support mechanism 30 (not shown) is inserted It is possible. Thereby, the hydroponic cultivation unit 20 is detachably supported by the suspension support mechanism 30 via the other end 23b.

  On the other hand, on the side surface of the water receiving connecting member 23, a branching pipe extending in the Y direction and a water receiving opening 23c are formed. A connection opening 24a of a water receiving member 24 described later is detachably connected to the water receiving opening 23c.

  As shown in FIG. 6, the water receiving member 24 is configured to include a connection opening 24a detachably connected to the water receiving opening 23c, and a water receiving portion 24b that receives supply of liquid from the liquid supply system 40. . The water receiving member 24 also has a hollow inside similarly to the tubular divided body 21a and the like.

In addition, it is preferable that each corner (corner) of the water receiving member 24 has a curved surface shape or an R shape for the purpose of improving cleanability.
Although the connection opening 24a shown in FIG. 6 has two connection claws, the number of such claws is not limited and may be any number other than two. However, it is advantageous that the number of claws is relatively small, for example, three or less, in terms of moldability and washability.

  The connection opening 24a is rotatably fitted with the water receiving opening 23c as shown in FIG. Incidentally, when the connection opening 24a and the water receiving opening 23c are fitted by rotation, they may be locked by a known structure such as a friction type, a hook type, or a screw type. As a result, the connection portion between the connection opening 24a and the water receiving opening 23c can be freely attached and detached and firmly connected. Therefore, once these are connected, liquid leakage or the like from the connection location is suppressed.

Further, the water receiving portion 24b is disposed so as to face the supply portion 43 of the liquid supply system 40 described above. The water receiving portion 24b of the present embodiment has a square external shape, but may have another shape such as a bowl shape as long as it can receive the liquid from the supply portion 43 without leakage. Good.
A known liquid detection sensor (not shown) may be arranged in the water receiving portion 24b to detect whether or not the liquid is supplied from the above-described supply portion 43.

As shown in FIG. 7, the guide tube 25 is detachably connected to the lower end of the cultivation tube 21 and has a function of guiding a liquid flowing inside the cultivation tube 21. More specifically, as shown in FIGS. 1 and 2, the guide cylinder 25 of the present embodiment is interposed between the liquid receiving bed 50 and the lower end of the cultivation cylinder 21. The inside of the guide tube 25 is also hollow like the tubular divided body 21a.
Further, as shown in FIG. 7, the guide cylinder 25 of the present embodiment has a structure provided with a splash prevention plate 25a which regulates, for example, liquid scattered from the liquid receiving bed 50 or the like so as not to go outside. You may.

Thereby, it is suppressed that the liquid discharged from the cultivation cylinder 21 jumps when it reaches the liquid receiving bed 50. In addition, when the guide tube 25 is detachably attached to the lower end of the cultivation tube 21, for example, when the hydroponic cultivation unit 20 moves in the X direction via the hanging support mechanism 30, the water is not moved during the movement. The swinging of the cultivation unit 20 can be suppressed.
The shape of the jump prevention plate 25a may be any shape, for example, a rectangular plate material as in the present embodiment or a disk shape. Further, the outer diameter of the splash prevention plate 25a may be set to any size as long as it does not interfere with other hydroponic cultivation units 20.

According to the embodiment described above, it is possible to enjoy at least one of the following effects.
(A) Since the cultivation cylinder 21 and the planting member 22 are detachably connected to each other, it is possible to assemble an arbitrary number thereof, and the workability and expandability are extremely high. It is much improved compared to.
(B) Since the planting member 21 rotates and fits into the cultivation cylinder 21, the operator can also rotate the planting member 22 at a comfortable angle during harvesting. Thereby, at the time of harvesting, the plant P can be pulled out from the planting member 22 without being damaged.
(C) Since the planting member 21 rotates and fits into the cultivation cylinder 21, there is no need to strictly manage the clearance as compared with the type of inserting and fitting.

The embodiment described above is an example, and various modifications can be made without departing from the gist of the present invention.
Hereinafter, modified examples suitable for the present embodiment will be described.

<Modification 1>
9 and 10 show a hydroponic cultivation unit 20 according to the first modification.
In the embodiment described above, the inner diameter of the cultivation cylinder 21 was basically unchanged and uniform. However, the present invention is not limited to the above, and may have an inclined surface (inner diameter narrowing portion) in which the inner diameter of the cultivation tube 21 gradually changes along the main axis direction.

In other words, the first modification is characterized in that at least a part of the inner surface of the cultivation cylinder 21 is formed with an inclined surface whose inner diameter changes.
In the following description, members having the same functions as those of the embodiment are denoted by the same reference numerals, and the description thereof will be appropriately omitted (the same applies to other modified examples).

  First, as shown in FIG. 9, the cultivation cylinder 21 of Modification Example 1 has an inner diameter narrowed portion 21 d as the above-described inclined surface. More specifically, in the cylindrical divided body 21a, an inner diameter narrowed portion 21d is formed on the downstream side (-Z direction) from the connection point with the planting member 22.

That is, the cylindrical divided body 21a of the first modification, the inner diameter has a site of [phi] D _1, a portion of the [phi] D _3. At a position downstream of the planting member 22, the inner diameter of the tubular divided body 21 a gradually decreases and gradually changes from φD ₁ to φD ₃ (such a slope is also referred to as “up slope”), and thereafter, Then, the inner diameter again increases and gradually changes from φD ₃ to φD ₁ (such a slope is also referred to as “down slope”).

The relationship between the thickness (wall thickness) and the diameter of the cylinder in FIG. 9 is, for example, as follows.
φD ₀ > φD ₁ > φD ₂ > φD ₃
(ΦD ₀ -φD ₁ ) ≒ (φD ₂ -φD ₃ )
However, the above is an example, and the degree of aperture may be weak and, for example, φD ₂ > φD ₁ .

  Further, there is no particular limitation on the formation position of the inner diameter narrowed portion 21d in the cylindrical divided body 21a. For example, considering the case of being formed by injection molding, it is preferable that the center is the center (center) in the main axis (Z direction) of the cylindrical divided body 21a. Thereby, the inner diameter of the cylindrical divided body 21a can be gradually changed easily along the drawing direction of the injection mold.

  Note that the inner diameter constricted portion 21d in FIG. 9 is formed over the entire circumference around the Z axis (θz) on the inner surface of the cylindrical divided body 21a. However, the present invention is not limited to the above-described embodiment, and may be an inner diameter constricted portion 21d having the embodiment shown in FIG.

Specifically, when viewed from the upstream side in the Z direction, the inner diameter narrowing portion 21d in FIG. 10A is connected to the planting member 22 in the process of gradually increasing the inner diameter. Further, as is clear from the cross-sectional view, the inner diameter narrowing portion 21d is provided only in a part in the circumferential direction so as to be located immediately below and directly above the planting member 22.
This allows the liquid flowing from the upstream (+ Z direction) to efficiently flow into the other end opening 22b of the planting member 22 in the middle through the inner diameter narrowing portion 21d.

On the other hand, as another example, when viewed from the upstream side in the Z direction, the inner diameter squeezed portion 21d in FIG. 10B has a form in which the inner diameter gradually decreases after exceeding the connection point with the planting member 22. I have. Further, as is clear from the cross-sectional view, the inner diameter narrowing portion 21d is provided only in a part in the circumferential direction so as to be located immediately below the planting member 22.
Also in this mode, the liquid flowing from the upstream (+ Z direction) can easily hit the inner surface of the inner diameter narrowing portion 21d, and can efficiently flow into the other end opening 22b of the planting member 22. ing.

Further, as another example, the form of the inner diameter narrowing portion 21d shown in FIG. 10C can be applied. In this example, the planting member 22 is connected to the tubular divided body 21a so as to face each other on both sides in the Y direction of the tubular divided body 21a.
When viewed from the upstream side in the Z direction, the inner diameter of the cylindrical divided body 21a gradually decreases after exceeding the connection point with each planting member 22.

Further, as is clear from the cross-sectional view, the inner diameter narrowing portion 21d is provided over the entire circumference in the circumferential direction (θz) so as to be located immediately below the planting member 22.
Also according to this mode, the liquid flowing from the upstream (+ Z direction) can efficiently flow into the other end openings 22b of the respective planting members 22.

  According to the first modification described above, it is possible to make the flow of the liquid smooth by providing the inner surface of the cylindrical divided body 21a with an inclination (inner diameter narrowing portion). The inclination and direction of the inclination are not particularly limited as long as molding is possible, and an upward gradient or a downward gradient may be provided at an arbitrary position.

<Modification 2>
Next, a hydroponic cultivation unit 20 according to Modification Example 2 will be described with reference to FIG.
As shown in FIG. 11A, the hydroponic cultivation unit 20 of Modification 2 is configured to include a protruding portion 22 c so as to easily receive water inside the cultivation tube 21.

Further possible, the amount of projection of the projecting portion 22c (cylindrical amount projecting from the inner wall to the center of the divided bodies _{21a) T 22} is the size of 1 / 10-1 / 3 with respect to the inner diameter of the cylindrical divided body 21a Is preferred.
This allows a part of the liquid L flowing from the upstream of the cultivation cylinder 21 to efficiently branch into the planting member 22 via the protruding portion 22c and flow in.

The projecting shape of the projecting portion 22c may be a shape in which the lower side (downstream side) projects from the planting member 22, and may be a shape in which the other end opening 22b of the planting member 22 is obliquely cut. Or other shapes.
More specifically, for example, in FIG. 11C, a protruding portion 22c is provided below the cylindrical divided body 21a. At this time, the width of the protruding portion 22c (the size in the X direction in the figure) may be any value as long as it can be accommodated in the tube. For example, the width in the X direction is a certain width so that the liquid L (water or the like) is easily received. It is better to have For example, the width in the X direction is preferably about 1/3 to 1/2 the inner diameter of the tube.

On the other hand, in FIG. 11B, the protruding portion 22c is formed by diagonally notching the other end opening 22b of the planting member 22. In this case, when the planting member 22 is connected to the cylindrical divided body 21a, the lower side of the other end opening 22b protrudes inside the cylindrical divided body 21a, and the upper side of the other end opening 22b is the cylindrical divided body 21a. It is preferable not to protrude inside 21a.
Thus, the method of forming the protruding portion 22c is not particularly limited, and may be formed on the planting member 22 side or may be provided on the tubular divided body 21a side.

<Modification 3>
Next, a hydroponic cultivation unit 20 according to Modification 3 will be described with reference to FIG.
As shown in the figure, in the planting member 22 according to the third modification, between the one end opening 22a and the other end opening 22b of the planting member 22, the plant P (seedling) is prevented from coming off. The prevention part 22d is formed.

More specifically, the detachment preventing portion 22d in the third modification is provided at a portion of the planting member 22 that extends in the Y direction from the other end opening 22b and then bends toward the one end opening 22a.
As the detachment preventing portion 22d, for example, a projection provided at the above-mentioned bent portion as shown in FIGS. 12A and 12B may be used.

When the plant P is transplanted into the one-end opening 22a, the transplant may be performed in a state where a seedling is planted in the medium S or the like. In this case, since the one-end opening 22a is in the shape of a flared trumpet, the unintentionally transplanted plant P may fall out together with the medium S.
On the other hand, according to the third modification, since the culture medium S can be caught on the falling-off preventing portion 22d, unintended dropping of the plant P or the like is suppressed.

  Note that the detachment preventing portion 22d may have various functions as long as it has a function of hooking the culture medium S. For example, as shown in FIGS. 12C and 12D, it is possible to adopt a structure of the planting member 22 in which the inner diameter gradually decreases in the Y direction from the other end opening 22b to the bent portion. it can.

  Then, the inner diameter of the planting member 22 of this modified example is the smallest at the above-mentioned bent portion, and the culture medium S can be hooked at this bent portion. That is, the detachment prevention portion 22d in the third modification may have a structure such as hooking at a bent portion instead of the example in which the protrusion is provided.

Further, to the extent that the culture medium S is caught, the slip-off preventing portion 22d may be formed by intentionally processing such that burrs or the like are generated at the bent portion. In consideration of the above, the detachment preventing portion 22d may be any structure that is formed on the inner surface of the planting member 22 and has a function of hooking the culture medium S.
The material of the culture medium S is not particularly limited, and a known material such as a sponge, urethane foam, or a molded product made of plant fibers or inorganic fibers can be used.

<Modification 4>
Next, a hydroponic cultivation unit 20 according to Modification Example 4 will be described with reference to FIG.
As shown in the figure, in the planting member 22 of Modification 4, a liquid storage portion 22e capable of storing the liquid L is formed between one end opening 22a and the other end opening 22b of the planting member 22. I have.

  Although the illustrated liquid storage portion 22e is provided on one end opening 22a side from the bent portion, the liquid storage portion 22e is not limited to this form. For example, the liquid storage portion 22e is provided on the other end opening 22b side from the bent portion by inclining so as to extend from the other end opening 22b in the Y direction and the −Z direction (the lower right direction in the drawing). It may be.

  Thereby, the plant P transplanted to the planting member 22 can absorb the liquid from the liquid storage part 22e, and can maintain a good nutritional state for a long period of time. Also, by inclining the planting member 22 from the other end opening 22b in the -Z direction, even when the planting member 22 is removed from the cultivation tube 21 during harvesting, the liquid does not flow out carelessly. It is possible to keep it in the storage part 22e.

<Modification 5>
Next, a hydroponic cultivation unit 20 according to Modification Example 5 will be described with reference to FIG.
As shown in the figure, in the planting member 22 of the fifth modification, a cutout portion 22f into which a cutting tool such as a cutter or scissors can be inserted is formed at one end opening 22a of the planting member 22.

  Depending on the type of the plant P to be cultivated, the root of the plant P may enter deep into the planting member 22. In such a case, it is necessary to pull the plant P a little strongly at the time of harvesting, but if there is the cutout portion 22f, it becomes possible to insert a blade without pulling.

In this regard, since the conventional structure is integrally fixed with an adhesive or the like, when a blade is used near one end opening 22a, the remaining portion of the plant P cannot be removed from the planting member 22.
On the other hand, in the present embodiment, since the planting member 22 is detachably connected to the cultivation cylinder 21, even in the unlikely event that the planting member 22 is decomposed, the remaining portion of the plant P can be easily removed.

Further, since there is the cutout portion 22f, a blade or the like can be freely inserted without damaging the plant P.
In addition, the presence of the cutout portion 22f allows the cutout portion 22f to function also as a monitoring window for the root of the plant P, and may serve as a measure of the depth at which the medium S is inserted from the one end opening 22a.

  There is no particular limitation on the position and the number of the notches 22f in the one-end opening 22a. For example, in the case of the hydroponic cultivation system 100 in which the plurality of hydroponic cultivation units 20 are arranged in the X direction, notches are formed on both ends (both sides in the X direction in the figure) of the one end opening 22a in the direction in which the hydroponic cultivation units 20 are arranged. There may be a part 22f.

  Further, the illustrated cutout portion 22f is formed at the one end opening 22a, but may be provided at the one end opening 22a side, and may be provided at any position between the bent portion and the one end opening 22a, for example. Good.

<Modification 6>
Next, a hydroponic cultivation unit 20 according to a modified example 6 will be described with reference to FIG.
As shown in the figure, the planting member 22 of the modification 6 is different from the embodiment shown in FIG. 4 mainly in the portion where the plant P is placed. Will be described.
The planting member 22 of Modification 6 includes a cylindrical portion 22h on which the plant P is arranged, a connecting portion 22j for connecting to the opening 21b of the tubular divided body 21a, the cylindrical portion 22h and the connecting portion 22j. And a bent portion 22i formed therebetween.

  As shown in FIG. 15, the cylindrical portion 22h in Modification 6 has a pipe shape in which the diameter L1 of the connection portion with the bent portion 22i and the diameter L2 of the one end opening 22a are equal to each other. The angle α between the central axes of the cylindrical portion 22h and the connecting portion 22j is preferably about 40 ° to 50 °. In other words, the cylindrical portion 22h and the connecting portion 22j are arranged via the bent portion 22i such that the central axes thereof are at an angle of about 40 ° to 50 °. By setting the above angle, even if the plant P grows large, the implantation depth of the cylindrical portion 22h serving as a planting location can be sufficiently ensured, so that the cylindrical portion can be stably formed without falling off from the cylindrical portion 22h. It is placed in 22h.

  The one end opening 22a is preferably positioned at a height equal to or higher than the horizontal plane HP passing through the uppermost portion of the inner diameter when the connecting portion 22j and the opening 21b are connected. That is, as shown in FIG. 15, it is preferable that the lower end LE of the one end opening 22a overlaps the horizontal plane HP, or the lower end LE is higher than the horizontal plane HP. With such a shape, it is possible to suppress the liquid from overflowing from the one end opening 22a, and there is an advantage in terms of cleaning equipment and costs.

  Further, in Modification 6, it is preferable that the angle β formed by the plane including the lower end LE and the upper end UE of the one end opening 22a and the horizontal plane HP is 15 ° to 40 °. With this angle, the plant P can be easily inserted into the cylindrical portion 22h, and the overflow of the liquid from the one end opening 22a can be suppressed.

  The length L3 between the diameter L1 and the diameter L2 is not particularly limited. However, as described above, it is preferable that the one end opening 22a is higher than the horizontal plane HP and the angle β has a shape within the above range from the viewpoint that the plant P is held by the cylindrical portion 22h and hardly comes off. In addition, by forming the cylindrical portion 22h into a straight shape, there is an advantage that the plant P can be easily inserted when planted in the cylindrical portion 22h, the planting operation is facilitated, and the planting time is shortened. Furthermore, it is preferable because the liquid can be prevented from overflowing from the one end opening 22a.

<Variation 7>
Next, a hydroponic cultivation unit 20 according to Modification Example 7 will be described with reference to FIG.
As shown in the figure, the planting member 22 of the modified example 7 is different from the modified example 6 shown in FIG. 15 mainly in the shape of the peripheral portion of the one end opening 22a, and thus the following description will focus on the difference. .
That is, the planting member 22 of Modification 7 is characterized in that a tongue portion 22k is provided at an end of the cylindrical portion 22h on which the plant P is disposed, on the opposite side to the connection portion 22j. In this case, the tongue 22k forms at least a part of the one end opening 22a.

In FIG. 16, the tongue 22k has a shape in which a part of a tapered tube is cut away. Also, between the cylindrical portion 22h and the one-end opening 22a such that an angle β formed by a plane including the lower end LE of the one-end opening 22a and the upper end UE of the one-end opening 22a and the horizontal plane HP is 15 ° to 40 °. A tongue 22k is provided.
Providing the tongue portion 22k as the planting guide shape in this way has an advantage that the plant P can be easily inserted when planting in the cylindrical portion 22h, and the planting operation becomes easy. In the early stage of the growth of the plant P, the light is reflected by the tongue 22k, which is effective for the growth of the plant P. Further, in the later stage of the growth of the plant P, the grown plant P is supported by the tongue portion 22k, so that the plant P is stabilized in the straight cylindrical portion 22h in which the implantation depth as the planting point is secured. It is preferable to arrange them.

  The shape of the tongue 22k is not limited to the shape shown in FIG. As long as the above effects can be obtained, for example, a curved semicircular plate or an elliptical plate may be used. That is, the tongue 22k may be provided only in a part of the cylindrical portion 22h.

<Modification 8>
Next, a hydroponic cultivation unit 20 according to Modification Example 8 will be described with reference to FIG.
As shown in the figure, the planting member 22 of Modification 8 is characterized in that a side surface protruding portion 22m is provided on the side surface of the cylindrical portion 22h, and a concave portion is formed on the inner surface thereof. By projecting a part of the culture medium S in which the plant P is planted in the depression, it is possible to suppress the culture medium S from falling out of the cylindrical portion 22h.

  In FIG. 17, since the shape of the culture medium S used is a quadrangular prism, the number of side projections 22m is set to four so that the four corners of the quadrangular culture medium S are received. However, the installation location, the installation number, and the size (length and width) of the side protruding portion 22m are not limited to those shown in FIG. 17 and can be changed as appropriate according to the shape of the culture medium S to be used. It is. Further, as long as the effect of suppressing the culture medium S from falling out of the cylindrical portion 22h can be obtained, it is not necessary to provide a plurality of side projecting portions 22m, and only one side protruding portion 22m is provided at any position of the cylindrical portion 22h. May be.

<Modification 9>
Next, a hydroponic cultivation unit 20 according to a ninth modification example will be described with reference to FIG.
As shown in the figure, in the planting member 22 of the ninth modification, a stopper 22n for holding the culture medium S at a predetermined position and suppressing the root of the plant P from growing in the opposite direction is provided. ing. As described above, by holding the culture medium S at a predetermined position by the stopper 22n, the region where the culture medium S is immersed in a liquid such as a nutrient solution can be adjusted, and the culture medium S is more than necessary in the liquid such as a nutrient solution. Immersion can be suppressed.

  This is in view of the following problems. That is, as the plant P grows, it can be assumed that the root is wound around the region where the medium S is immersed in the nutrient solution. As a result, the root of the plant P pushes up the culture medium S and pushes it out from the cylindrical portion 22h, or the root of the plant P grows in the direction of the one end opening 22a, so that the liquid irregularly overflows from the one end opening 22a. Or the possibility of In order to suppress such a problem, it is effective to provide a stopper 22n, adjust a region where the culture medium S is immersed in a liquid such as a nutrient solution, and at the same time, control a direction in which the root of the plant P extends.

As the position where the stopper 22n is provided, it is preferable that the stopper 22n is provided at a position connected to the bent portion 22i in the cylindrical portion 22h from the viewpoint of stably holding the culture medium S in the cylindrical portion 22h.
The shape of the stopper 22n may be any shape as long as the medium S is held at a predetermined position and the root of the plant P grows in the direction of the bent portion 22i or the connecting portion 22j. By extending the root in the direction of the bent portion 22i or the connecting portion 22j, the effect of not extending the root of the plant P in the direction of the opening 22a at one end can be expected. For example, as shown in FIG. 18A, a shape in which a part of the bent portion 22i protrudes inward may be used. Further, as shown in FIGS. 18B and 18C, a disk having an opening may be provided at a connection position with the bent portion 22i in the cylindrical portion 22h. Further, the shape shown in FIGS. 18A to 18C may be an arc shape in which a part is cut away, or a shape having a protruding member from the inner wall of the cylindrical portion 22h toward the center.

By the stopper 22n, the region near the one end opening 22a of the culture medium S can be kept in a state not immersed in the nutrient solution. As a result, it can be assumed that the roots of the plant P extend in the direction of the connecting portion 22j and the cylindrical divided body 21a, and it is considered that problems such as overflow of the liquid from the one end opening 22a can be suppressed.
In addition, even if it is a shape like the side protruding part 22m shown in FIG. 17, since the position of the culture medium S can be fixed or the region where the culture medium S is immersed in a liquid such as a nutrient solution can be adjusted, the same applies. The effect of is obtained.

<Variation 10>
Next, a hydroponic cultivation unit 20 according to a modified example 10 will be described with reference to FIG.
As shown in the figure, in the cylindrical divided body 21a of the modified example 10, on the inner surface, irregularities 21c are formed in the circumferential direction near the upper part of the opening 21b around the main axis (Z axis). In FIG. 19A, the unevenness 21c is not formed over the entire circumference in the cylinder (inner peripheral surface) of the tubular divided body 21a, but the unevenness 21c is formed over the entire circumference. Is also good. Further, the unevenness 21c may be formed so as to draw a spiral on the inner peripheral surface.
The shape of the unevenness 21c is not particularly limited, and may be, for example, a trapezoidal cross section as shown in FIG. 19A or a triangular cross section as shown in FIG. 19B. Is also good. At this time, as shown in FIG. 19 (b), the triangular cross section has the function of guiding the liquid passing through the inside of the cylindrical divided body 21a and the ease of cleaning the inside of the cylindrical divided body 21a. Are particularly preferred.
Further, the number of the irregularities 21c provided on the inner surface of the cylindrical divided body 21a is not particularly limited, and may be provided at an arbitrary position (in this case, substantially only a convex portion). . As shown in FIG. 19 (a), five locations may be provided at the top and bottom facing each other. Also, unevenness 21c having a triangular cross section as shown in FIG. 19B may be provided at two opposing locations on the inner surface. It is needless to say that the figure is an example, and the number of the unevenness 21c is not limited to that shown in the figure.
Further, in FIG. 19 (a), the unevenness 21c is formed in the convex direction from the inner peripheral surface, but as shown in FIG. 19 (d), it has a concave shape with respect to the thickness direction Th of the inner peripheral surface. You may.

As described above, in the hydroponic cultivation unit 20 of Modification 10, the groove (the unevenness 21c) for guiding the liquid toward the planting member 22 is provided at least above the opening 21b of the inner peripheral surface of the cultivation cylinder 21. Is formed.
Thus, the liquid L flowing on the inner surface of the cylindrical divided body 21a flows along the groove, so that the liquid L can efficiently flow into the opening 21b, and can branch and flow toward the planting member 22. Become.

<Modification 11>
Next, a hydroponic cultivation unit 20 according to a modification 11 will be described with reference to FIGS.
As shown in the figure, the hydroponic cultivation unit 20 of the modification 11 is provided with a flow path adjusting member for adjusting the amount, speed, direction, and the like of the flowing liquid inside the water receiving connection portion 23 and the cultivation tube 21. Have been.
As the flow path adjusting member, specifically, a protruding portion Zt as shown in FIGS. 20A to 20D, a bridge portion Lk as shown in FIG. 20A, and as shown in FIG. 20B. 20k, and a groove Mz shown in FIG. 20 (c).

First, the protrusion Zt as shown in FIGS. 20A to 20D will be described with reference to the drawings. The protruding portion Zt is provided at a location where the water receiving member 24 and the water receiving connecting portion 23 are connected, and has a shape projecting inside the water receiving connecting portion 23.
The shape of the protrusion Zt (the shape protruding from the inner wall of the water receiving connecting member 23a toward the center) is not particularly limited as long as the liquid flows downward (downstream side). Should be adjusted as appropriate.
In this case, the length T ₂₄ projecting from the inner wall of the water receiving coupling member 23a of the protruding portion Zt into central, preferably length that flowed water hits the inner wall of the face-to-face, and the inner diameter of the water receiving connecting members 23a same Preferably, the size is about 1/3 of the inner diameter.

In addition, the width W ₂₄ of the projection Zt needs to be smaller than the inner diameter of the water receiving connecting member 23 because water needs to flow out from both sides of the projection Zt. Further, the length T ₂₄ and the width W ₂₄ of the protrusion Zt are illustrated, but the outer shape of the protrusion Zt does not need to be a rectangle, and may be a shape surrounded by a curve, or the water receiving connection member 23a. The shape may be a triangular shape that is sharpened from the inner wall toward the center.

  As a result, the liquid L flowing from the upstream of the water receiving portion 24 efficiently hits the inner surface of the water receiving connecting member 23 via the protrusion Zt to the inner wall of the water receiving connecting member 23, so that the inner wall is efficiently used. It is possible to supply the liquid to the planting member 22 below (downstream side).

  In FIG. 20 (c), when the water receiving member 24 is connected to the water receiving connecting member 23c, the lower side of the connecting opening 24a protrudes inside (inside the cylinder) of the water receiving connecting member 23a, and It is preferable that the upper side of 24a does not protrude inside (inside the pipe) of the water receiving connecting member 23a.

  The shape of the protrusion Zt is not particularly limited, as long as the lower side protrudes into the pipe. Thus, as an example of the form of the protrusion Zt, for example, a member such as a small bar may be used. Furthermore, if such a protrusion Zt whose lower side protrudes can be formed, the protrusion Zt may be formed on the water receiving member 24 side as shown in FIG. ) May be provided below the water receiving connecting member 23a. Further, such a protrusion Zt may be formed on the planting member 22.

Next, the bridge portion Lk shown in FIG. In the hydroponic cultivation unit 20 according to Modification 11, the flow path adjusting member may be a bridge portion Lk that connects a certain inner wall to an inner wall facing the inside of the water receiving connection portion 23 or the cultivation tube 21. .
The shape of the bridge portion Lk shown in FIG. 21A is a rod-shaped member, but is not limited to this. As long as the water receiving connection portion 23 and the inner walls of the cultivation cylinder 21 can be connected to each other and the amount, speed, direction, and the like of the flowing liquid can be adjusted, for example, the cross section of the bridge portion Lk has a round shape, an elliptical shape. , U-shaped, V-shaped, W-shaped and the like.
The position where the bridge portion Lk is provided as shown in FIG. 21 (a) is not particularly limited, and can be provided at an arbitrary position such as a portion where the liquid has a momentum or a position where the flowing direction changes. is there.

Next, the perforated plate Dk shown in FIG. 21B will be described. In the hydroponic cultivation unit 20 according to Modification 11, the flow path adjusting member may be a perforated plate Dk that connects a certain inner wall to an inner wall facing the inside of the water receiving connecting portion 23 or the cultivation tube 21. Good.
The position where the perforated plate Dk is provided and the specific shape of the perforated plate Dk are not particularly limited as shown in FIG. For example, as the perforated plate Dk in FIG. 21B, a disk having three holes is provided perpendicularly to the water receiving connection portion 23 and the inner wall of the cultivation tube 21. However, the number of holes may not be three, and the perforated plate Dk may not be provided perpendicular to the inner wall of the cultivation cylinder 21.

Next, the groove Mz shown in FIG. 21C will be described. In the hydroponic cultivation unit 20 according to Modification 11, as the flow path adjusting member, the groove Mz (in-cylinder) capable of adjusting the amount, speed, direction, and the like of the liquid flowing into the water receiving connection portion 23 and the inside of the cultivation tube 21. (Irregularities arranged along the circumferential direction). Note that the groove portion Mz may have the shape shown in the above-described modification 10 (that is, the number of unevenness is not limited and may be one convexity or two or more irregularities may be arranged in the circumferential direction). Further, the groove portion Mz may not be provided in parallel with the long axis direction of the water receiving connection portion 23 or the cultivation cylinder 21, and the groove portion Mz may be formed so as to draw a spiral on the inner wall.
The groove Mz may be convex with respect to the thickness of the inner wall as shown in FIG. 19A, or may be concave with respect to the thickness Th of the inner wall as shown in FIG. 19D.

  Further, a new hydroponic cultivation unit or a new hydroponic cultivation system may be configured by appropriately combining the features of the above-described embodiment and Modifications 1 to 11.

  The hydroponic cultivation unit and the hydroponic cultivation system of the present invention can be widely applied in the field of plant cultivation regardless of the type of plant.

P Plant S Medium 100 Hydroponics system 10 Frame 20 Hydroponics unit 30 Suspension support mechanism 40 Liquid supply system 50 Liquid receiving bed 60 Light source

Claims (12)

A cultivation tube composed of a plurality of mutually detachable cylindrical divided bodies and having at least one opening on a side surface thereof;
A planting member including one end opening where the plant is arranged, and the other end opening that is detachable from the opening of the cultivation tube,
A hydroponic cultivation unit comprising:   The hydroponic cultivation unit according to claim 1, wherein the opening and the other end opening are fitted by being rotated.   The hydroponic cultivation unit according to claim 1 or 2, wherein an inclined surface whose inner diameter changes at least partially is formed on an inner surface of the cultivation cylinder. One end is detachably connected to the cultivation cylinder, and the other end is detachably connected to a suspension support mechanism for suspending and supporting the hydroponic cultivation unit, and has a water receiving opening on a side surface. A receiving connecting member;
A water receiving member detachably connected to the water receiving opening and receiving supply of liquid from a liquid supply system,
The hydroponic cultivation unit according to any one of claims 1 to 3, further comprising:   The hydroponic cultivation unit according to claim 4, further comprising a guide tube detachably connected to a lower end of the cultivation tube and guiding a liquid flowing inside the cultivation tube.   6. The groove according to claim 1, wherein a groove for guiding a liquid to the side of the planting member is formed on at least an upper portion of the opening in the inner circumferential surface of the cultivation cylinder. 7. Hydroponics unit.   The other end opening of the planting member is obliquely cut away so that a part of the other end opening protrudes inside the cultivation tube to form a water receiver when connected to the cultivation tube. Item 7. The hydroponic cultivation unit according to any one of Items 1 to 6.   The hydroponic cultivation according to any one of claims 1 to 7, wherein between the one end opening and the other end opening of the planting member, a falling-off preventing portion that suppresses the plant from falling is formed. unit.   The hydroponic cultivation unit according to any one of claims 1 to 8, wherein a cutout portion into which a blade can be inserted is formed at one end opening of the planting member. The planting member has a connecting portion for connecting to the tubular divided body,
The hydroponic cultivation unit according to any one of claims 1 to 9, wherein the one end opening of the planting member is positioned at a height equal to or higher than a horizontal plane passing through the uppermost portion of the connection portion.   The hydroponic cultivation unit according to any one of claims 1 to 10, wherein the planting member has a tongue that forms at least a part of the one end opening. A hydroponic cultivation unit according to any one of claims 1 to 11,
A hanging support mechanism for supporting the hydroponics unit,
A liquid supply system that supplies a necessary liquid to plants planted in the hydroponics unit,
A hydroponic cultivation system comprising: