JPH0714848U - Trough hydroponics and trough used for it - Google Patents

Abstract

(57) [Abstract] [Purpose] To supply temperature-controlled air to leaf vegetables to promote optimal photosynthesis in order to form an optimal growing environment for the growth of leaf vegetables in a trough hydroponics device. [Structure] Each trough 1, 1 arranged at regular intervals
Continuous receiving grooves 5 and 5 are formed on both outer side faces of the trough 1 so as to open upward along the extending direction of the trough 1. The baffle plate 14 is integrated with the bridging material 12 in which the leg portions 13B can be fitted in the facing receiving grooves 5 and 5.
The temperature-adjusting air 16 rising from the lower side of the trough 1 is diverted toward the trough 1 by the bridging material 12 thus suspended, and the photosynthesis of the leafy vegetables 9 is promoted. In the case of a hydroponic cultivation apparatus, the root becomes over-humidified due to evaporation of the nutrient solution 2 flowing through the trough 1, but this is also eliminated, and the occurrence of decay and the like is minimized. Of course, temperature controlled wind 1
Unnecessary scattering of 6 is prevented, and an excessive amount of consumption is avoided by improving the utilization efficiency.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a trough-type hydroponic cultivation apparatus and a trough used for the same, and more specifically, a plurality of troughs supported by a trough on which a nutrient solution flows and are arranged in parallel on the same plane. The present invention relates to a trough-type hydroponic cultivation device capable of concentrating hot air and cold air or carbon dioxide gas to the leaves to promote growth when leaf vegetables are cultivated in the plant pot.

[0002]

[Prior art]

 Since leaf vegetables such as lettuce, spinach, salad vegetables, and Chinese cabbages are harvested in a short period of time, they are often hydroponically cultivated in a greenhouse with a temperature control function. In that case, for example, as described in JP-A-57-177627, a strip into which a flower pot is fitted is movably inserted into a large number of holes, and a nutrient solution is circulated to the bottom. A device employing a trough may be used. In such a trough type hydroponic cultivation apparatus, a plurality of troughs are arranged in parallel and slightly inclined on the same surface. When seedlings are planted in each trough, when the strip is paid out from the end of the trough to the end, the pots are sent while fitting the holes in the strip. On the other hand, when growing, it is possible to harvest leaf vegetables by removing the pots on the strip from the end when pulling out the strip from the end of the trough and cutting off the pot at the bottom of the stem.

As described above, in a greenhouse in which a large number of troughs are arranged, the troughs are arranged on a pedestal so that a worker can perform planting work and harvesting work without bending over. Therefore, the fresh nutrient solution can be passed through each trough and the circulation can be made three-dimensional, which is extremely convenient. Not only that, as described in, for example, Japanese Patent Laid-Open No. 3-127919, a temperature control duct for air conditioning a greenhouse is arranged in a space below the trough so as to be orthogonal to the extending direction of the trough. Sometimes. This is not only to air-condition the interior of the greenhouse, but also to give an appropriate flow to the air and apply it to the leaf surface of leafy vegetables to promote carbon dioxide assimilation. This temperature control duct generates cool air supplied by a blower from a cool shell device installed in one corner of the greenhouse when the room temperature becomes undesirably high, and supplies hot air supplied from a heater or the like when the room temperature becomes low. be able to. For this reason, for example, a ring-shaped vinyl sheet is used as the temperature control duct, and when cold air or warm air is supplied, it bulges into a cylindrical shape and can be raised from the side surface at the top toward the trough. Some outlets are provided. The rising wind from the temperature control duct passes between the troughs that are arranged in parallel. At that time, the leaf surface becomes a wind of about 60 cm / sec and flutters, and becomes a gentle flow to the leaf surface. Adjusted to the air volume.

[0004]

[Problems to be solved by the device]

 By the way, the trough has a height of 5 cm and a width of 5 cm to 6 cm, and it depends on leaf vegetables, but the holes for the pots provided in the strip to be inserted into the trough are, for example, 15 cm. To be This is an interval in which neighboring leafy vegetables do not interfere with each other even in the state of near harvest. Therefore, the distance between the adjacent troughs is set to about 10 cm, and it is considered that a uniform distance is secured in front, back, left and right when focusing on one plant pot. The distance between such troughs is fixed, except for a special case where the troughs expand as they grow, as described in, for example, Japanese Patent Laid-Open No. 55-24000. . In other words, the mechanism for changing the interval between the troughs arranged in parallel complicates the equipment in the greenhouse and requires power equipment, and when simplification of equipment is required, it is mounted on a stand. The trough position is always maintained. In such a case, when leaf vegetables are not growing, that is, when the leaf surface does not overhang the space between the troughs, the air flow blown from the temperature control duct does not hit the leaf surface between troughs much. , The center of the gap of about 10 cm between the troughs will rise. As a result, there is a drawback that less fresh air is supplied to the leaves and the achievement of the intended purpose is diminished. On the other hand, when leaf vegetables grow and the leaf surface spreads, the temperature-controlled wind hits the leaf surface, but this interrupts the supply of stems from the plant pot, that is, near the roots of the leaf vegetables. There is a problem that stagnation of air occurs in the part, resulting in overhumidification. Even more, when carbon dioxide gas is supplied to promote photosynthesis, the same phenomenon occurs, and eventually, there is a problem that it scatters without use or is forced to supply an excessive amount.

The present invention has been made in view of the above circumstances, and an object thereof is to effectively supply air so that hot and cold air blown from a temperature control duct is brought into direct and sufficient contact with leaves of leafy vegetables. A trough-type hydroponic cultivation apparatus and a trough used therefor, which enables morphology, thereby promoting photosynthesis activation, and preventing overhumidification at the root to realize an optimal growth environment. Is to provide.

[0006]

[Means for Solving the Problems]

 According to the present invention, a horizontal strip that fits a plant pot into each of the multiple holes is inserted in the upper part, and a plurality of troughs that distribute the nutrient solution are provided in parallel in the bottom part below the plant pot. It is applied to hydroponic cultivation facilities arranged on the same plane. Its characteristic feature is that, with reference to FIG. 1, a continuous receiving groove 5 is formed on both outer side surfaces of the troughs 1, 1 which are arranged at regular intervals and which opens upward along the direction in which the trough 1 extends. , 5 are formed. On the other hand, in the receiving grooves 5 and 5 in the facing surfaces of the adjacent troughs 1 and 1, the bridging material 12 into which the leg portions 13B and 13B provided on the left and right are fitted is spanned, and at the central portion of the bridging material 12 Is formed with a baffle portion 14 that extends in the longitudinal direction of the trough 1 to cause the temperature-adjusting air 16 rising from below the trough 1 to flow in each trough direction. As shown in FIG. 3, it is preferable to form an expandable portion 18 for changing the left-right width in the center portion of the bridging material 13 of the transfer material 12 so as to be arranged in the receiving groove at an arbitrary distance.

As shown in FIGS. 5 and 6, the baffle portions 34, 44 may be formed in an upwardly open angle shape. As shown in FIGS. 7 and 8, the baffle portions 24 and 44 may be provided with an air supply pipe 20 for supplying carbon dioxide gas or the like. In this case, the gas supply pipe 20 is provided with a gas hole 20a for ejecting carbon dioxide gas in the trough direction. Further, referring to FIG. 9, a recess 53a into which the air supply pipe 20 is fitted is formed in the center of the transfer material 52, and the gas hole 20a is located below the baffle portion 54 arranged on the side of the air supply pipe 20. It may be located at.

The trough according to the present invention has a plurality of holes, each of which has a horizontal posture in which a pot is fitted into the trough, is inserted into the upper part of the trough, and a nutrient solution is circulated to the bottom of the trough. A trough used in a hydroponic cultivation facility in which book troughs are arranged in parallel and in the same plane. The feature is that, as shown in Fig. 1, both outer sides of each trough 1,1 That is, continuous receiving grooves 5 and 5 that open upward along the extending direction of the trough are formed.

[0009]

[Action]

 The transfer material 12 is arranged between the troughs through which the nutrient solution 2 flows, and the leg portions 13B, 13B are fitted in the receiving grooves 5, 5 formed on the side surfaces of each trough 1. The bridging material 12 has a baffle plate 14 placed on the cross-linking material 13 or a baffle portion integrally formed as a bridging material. Temperature-adjusting air 16 is blown out from the temperature-adjusting ducts 11 below the many troughs 1, 1 and tries to rise through the gaps 10 between the troughs 1, 1. The temperature-controlled air 16 is prevented from rising by the baffle plate 14 and the like, and is diverted toward the air circulation gap 15 between the baffle plate 14 and the trough 1. The changed temperature-controlled air 16 flows toward the trough 1 and hits the leaf surface of the leaf vegetable 9. The leaves are swayed by the gentle temperature-controlled airflow 16 to avoid air stagnation. Photosynthesis by fresh temperature-controlled air 16 is achieved and leaf vegetables grow faster. The air near the plant pot 4 is particularly apt to stagnant, but such a situation is eliminated and the occurrence of decay at the root is suppressed as much as possible. When the troughs are arranged at an arbitrary distance, the cross-linking material 13 in which the stretchable portion 18 for changing the left and right width is formed in the central portion as shown in FIG. 3 is used, and as shown in FIG. The controlled air flow 16 is diverted by using the baffle portion 24 in which the folding angle can be changed.

As shown in FIG. 5 and FIG. 6, when the baffle portions 34, 44 have an angled shape that opens upward, the temperature-controlled air 16 is made to flow more unevenly, and if the angled shape is selected to be large, adjustment is possible. The warm air 16 strongly hits the leafy vegetables 9. If the air supply pipes 20 shown in FIGS. 7 and 8 are attached to the baffle portions 24 and 44, carbon dioxide gas or the like can be blown out from the gas holes 20a and carbon dioxide gas can be efficiently supplied. Further, as shown in FIG. 9, a recess 53a into which the air supply pipe 20 is fitted is formed in the center of the cross-linking material 13 constituting the transfer material 52, and the gas hole 20a is positioned below the baffle portion 54. If so, the temperature-adjusted air 16 that has been drifted can be accompanied by carbon dioxide gas and the like, and unnecessary emission is reduced.

On the other hand, the trough itself has the above-mentioned receiving grooves 5 and 5 on both side surfaces, so that any type of bridging material can be adjusted by fitting its legs 13B and 13B. The uneven distribution of the warm air 16 is promoted, and the unnecessary emission of the temperature-controlled air 16 and the excessive consumption of the temperature-controlled air 16 which have conventionally been merely raised between the troughs can be avoided.

[0012]

[Effect of device]

 According to the trough-type hydroponic cultivation apparatus of the present invention, the passing material is arranged between the troughs so that the rising temperature-controlled air is diverted, and the leaf vegetables arranged on the troughs can be efficiently applied. As a result, fresh air is supplied to the leaf surface of the leafy vegetables, and photosynthesis is promoted to grow and grow in a short period of time. In addition, air stagnation at the root will be reduced as much as possible, the overhumidity state due to the nutrient solution flowing through the trough will be eliminated, and the occurrence of spoilage will be extremely reduced. If the spanning material has a flexible part for changing the width in the central part, the spanning material will have an arbitrary width even when the trough spacing is changed or when different trough spacings are applied. As a result, it is possible to realize the drift of the controlled air.

When the baffle portion has an angled shape that opens upward, the effect of rectifying the rising temperature-adjusting air is enhanced, and the supply to the leafy vegetables becomes even more effective. When an air supply pipe is attached to the baffle, carbon dioxide or the like can be ejected from the gas hole to promote photosynthesis of leafy vegetables. If a recess for fitting the air supply pipe to the transfer material is formed in the center and its gas hole is located below the baffle part, the temperature-adjusted air that has been drifted will be accompanied by carbon dioxide gas, etc. Carbon dioxide, etc. can be concentratedly supplied, and the consumption efficiency is improved. In the case of strong jets from the gas holes, the temperature-adjusted air that has drifted will be forced, and the effect of blowing leafy vegetables in the direction will be improved.

By forming continuous receiving grooves that open upward along the extending direction of the trough on both outer side surfaces of the trough, the above-mentioned bridging material can be mounted, and the troughs can be simply passed through. Compared to conventional cultivation, which has been rising, a trough that can control the drift of temperature-controlled air is realized. The cross-sectional shape of the trough is continuously constant even when the receiving groove is formed, and it can be pultruded from aluminum and other materials, making it easy to manufacture and supplying a cheap trough.

[0015]

【Example】

 Hereinafter, a trough type hydroponic cultivation apparatus of the present invention and a trough used for the same will be described in detail with reference to the drawings showing the embodiments. FIG. 1 is a cross-sectional view of two adjacent troughs 1 out of a plurality of troughs arranged in parallel in the greenhouse (not shown) and slightly inclined on the same plane. Each of the troughs 1 has a slightly long rectangular cross section, for example, a width of about 6 cm and a height of 5 cm, and the upper portion is open to a width of about 2.5 cm. The trough 1 has a bottom portion provided with a portion through which the nutrient solution 2 flows, a space for accommodating the plant pot 4 supported by the strip 3, and a groove portion through which the strip 3 is inserted. That is, in the trough-type hydroponic cultivation apparatus of this example, the strips 3 each having a horizontal posture in which the plant pots 4 are fitted are inserted into the respective holes, and the bottom portion of the plant pots 4 is inserted. The nutrient solution 2 can be circulated along it. In such a trough 1, continuous receiving grooves 5 and 5 are formed on both outer side surfaces of the trough 1 that open upward along the extending direction of the trough. The bridging material 12 can be bridged between the adjacent troughs 1 and 1. The trough is a long piece that can be selected from a short piece such as 7 m to an extremely long piece such as 40 m, but the internal structure of the receiving groove 5 and the trough 1 described above also includes the reinforcing rib 6 formed on the lower surface. , The same cross-sectional shape is maintained without interruption in the longitudinal direction. Therefore, one trough can be efficiently manufactured as an aluminum pultruded product or a hard plastic extruded product.

To describe the structure of the trough 1 in a little more detail, supporting projections 7 and 7 and upper pieces 8 and 8 which are horizontally projected from the left and the right to form a space for inserting the strip 3 and to support the same are formed. . The supporting projection 7 is shorter than the upper piece 8 because it is sufficient to support the end of the strip 3. However, since the strip 3 is slid during planting work and harvesting work, the tip of the strip 3 is rounded to reduce the frictional force, and the strip 3 is less damaged. ing. The interval between the upper pieces 8 and 8 has an opening of, for example, 2.5 cm as described above so that the leaf vegetables 9 do not interfere with the stem even if they grow large. The upper piece 8 functions to suppress deformation of the strip when the strip 3 is inserted and to prevent the plant pot 4 from falling. In addition, the tip end of the same dam as the support protrusion 7 is rounded so that the moving strip 3 is less damaged and is less likely to be damaged even if the root leaf spreads and touches. By the way, the corner of the bottom where the nutrient solution 2 flows is also rounded, and when the strip 3 is moved at the time of harvest, the bottom is rubbed by the infested root, and at that time, it adheres to the scraps and walls of the root remaining at the bottom. Scraping to remove algae and aquatic plants has become easier.

On the other hand, since the strip 3 is inserted into one trough 1, at least the same length as the trough 1 is used. The strips 3 are arranged with holes 3a into which the pots 4 are fitted at regular intervals according to the type of leaf vegetables to be vegetated, and the pots 4 with seedlings are put in all the holes or in the case of a leafy plant that grows large. It is fitted every other month. The distance between the holes 3a, 3a that are usually provided is 7.5 cm or 15 cm. This strip 3 is made of plastic with a thickness of 2 mm to 3 mm. Therefore, it can be wound up when the strip 3 is unwound in the planting work or when the strip 3 is pulled up in the harvesting work. The strip 3 is, for example, slightly longer than the trough 1, for facilitating winding during the planting work and the harvesting work.

The plant pot 4 fitted in the strip 3 has a height of about 3 cm and has a downward constriction so that the upper opening becomes wide like the usual plant pot, and the diameter of the opening is about 2.5 cm. . A collar 4a is formed around the upper portion and has an outer diameter of about 3.5 cm. The flower pot 4 is as thin as 0.2 mm to 0.3 mm, for example, and can be easily obtained by hot pressing a polyethylene sheet. In addition, for example, one slit 4b is put in the bottom of the pot 4 so as to straddle the side surface, so that the root can be extended toward the nutrient solution 2 from the stone grain. There is. Since the upper pieces 8 and 8 formed on the upper part of the trough 1 are located above the brim 4a of the flower pot 4 and have the above-mentioned dimensional relationship, the leaf vegetables grow large and the flower pot is Even if it is about to fall, the collar 4a is pressed by the lower surface of the end of the upper piece 8 and the leaf vegetables 9 will not fall. The nutrient solution 2 is pumped up by a pump or the like (not shown), supplied from the higher part of the gently inclined trough 1, and flows to the lower part with the water level kept substantially constant. From the end of the trough 1, the nutrient solution is allowed to flow out as it is, or if a trough end is equipped with a weir, it is returned to the nutrient solution tank via a hose or the like, and the fertilizer is replenished or aerated. After being done, it is recycled to the trough again.

By the way, a certain gap 10 is provided between the troughs depending on how the leafy vegetables 9 grow. On the other hand, below the troughs 1 and 1, for example, a vinyl temperature control duct 11 is arranged at a right angle to the extending direction of the troughs, and temperature control air such as cold air or warm air from the air conditioner is supplied to the greenhouse. Supplied within. The temperature-controlled air 16 is supplied to the leaf surface of the leafy vegetable 9 in order to promote photosynthesis, and the amount of air is such that the leaf surface slightly sways. However, if the temperature-controlled air is blown up from the gap 10 between the troughs 1 and 1 as it is, the temperature-controlled air is wastefully consumed without touching the leaf surface. Therefore, a bridging material having a baffle part having the following structure is laid between troughs.

The transfer material 12 is to be fitted into the receiving grooves 5 and 5 provided on the facing surfaces of the adjacent troughs 1 and 1, and the ends of the arm portions 13A and 13A of the cross-linking material 13 protruding to the left and right. Legs 13B and 13B are formed at the ends [see FIG. 2 (a)]. The simplest form of the bridging material 12 consists of a slightly thick strip of plastic, a bridging material 13 with both ends bent, and a flat baffle plate 14 mounted on it. The cross-linking material 13 may be laid freely or at intervals of, for example, about 40 cm, and the baffle plate 14 may be placed thereon. The cross-linking material 13 has an appropriate width of 10 cm, and may have a length of about 3 cm to 4 cm in the extending direction of the trough. A baffle plate 14 of plastic or plywood having an appropriate width of 5 cm is placed on the central portion of the cross-linking material 13 and is fixed by an appropriate method or simply placed. The baffle plate 14 as described above functions as a baffle portion that diverts the temperature-controlled air 16 rising between the troughs 1 and 1.

Even if the cross-linking material 13 is bent due to the weight of the baffle plate 14, there is no particular problem because the leg portions 13B and 13B of the cross-linking material 13 are fitted in the receiving grooves 5 and 5. In the case of a large bending, a rib 13a extending in the trough direction may be integrally formed as shown by an imaginary line in FIG. Of course, the length of the leg portion 13B and the depth of the receiving groove 5 are appropriately selected, and when the entire leg portion 13B is put in the receiving groove 5, the lower surface of the arm portion 13A is supported by the upper edge of the receiving groove 5, When the lower half of the leg portion 13B is simply put in the receiving groove 5, it is supported only by the rigidity of the leg portion 13B. The opening of the receiving groove 5 has a width of, for example, about 4 mm, and the thickness of the cross-linking material 13 may be set to about 2 mm. However, in the case of plastic molding, only the legs and the vicinity thereof may be slightly thicker. it can. Further, as shown in FIG. 2B, the leg portion 13B may be bent outward in a U shape or may be bent inward. If there is a bent portion, it can be firmly fixed to the inner surface of the receiving groove 5 by utilizing its elastic force or the like. As shown in FIG. 2 (c), the leg portion 13B may have a bifurcated shape. In any case, it is removed from the troughs 1 and 1 when it is not used, but there is no problem in its operation.

In the transfer material 12 for the trough type hydroponic cultivation apparatus including the cross-linking material 13 and the baffle plate 14, first, according to the type of the leafy vegetables 9 to be cultivated, the amount of growth and how to spread the leaf vegetables are determined. As expected, a large number of troughs 1, 1 will be placed on the gantry at the desired spacing. Then, the bridging materials 13, 13 are arranged at appropriate intervals in the receiving grooves 5, 5 of the trough shown in FIG. In the work, the operator may fit the cross-linking material 13 into the receiving grooves 5 and 5 at each position, but since the receiving groove 5 is continuous, several cross-linking materials 13 and 13 are provided at one place. It is also possible to fit it in and to shift the bridging material 13 from there along the receiving grooves 5 and 5 in the extending direction of the trough 1. The interval between troughs is about 10 cm as described above, and it is impossible for an operator to enter between the troughs, but if a work passage is secured for every few troughs, reach out from there. Alternatively, the cross-linking material 13 can be arranged at a desired position by using a rod or the like. Even if the cross-linking materials 13 and 13 cannot be arranged at equal intervals, it is sufficient that the baffle plate 14 can be placed and supported. The baffle plate also has an appropriate length, and for example, a baffle plate having a length of about 2 m may be sequentially mounted. If it is a plastic baffle plate, it can be made into a long strip of, for example, 30 m, and two workers can hold it at both ends and hang it in sequence.

On both sides of the baffle plate 14, an air circulation gap 15 is secured between the side portions of the trough 1, for example, a width of about 2.5 cm on each side. The temperature-controlled air 16 blown out from the temperature-control duct 11 hits the lower surface of the trough 1 and then rises on the side surface to cool or warm the trough itself. On the other hand, the temperature-controlled air 16 rising directly between the troughs is divided into left and right by the baffle plate 14 and is guided by the baffle plate 14 as shown by arrows 17 and 17 in the direction of each trough 1. Drifted to. In the space where the cross-linking material 13 is present, it seems that the flow of temperature-controlled air is blocked, but its length is short and does not hinder the delivery of air to the leaf surface. The temperature-controlled air blows on the leaf surface of leaf vegetable 9 at an appropriate wind speed, and promotes the movement of air on the leaf surface. Fresh air promotes photosynthesis on the leaf surface. It also promotes the dissipation of heat generated during photosynthesis. When the leaves are overgrown, the air that stagnates near the roots of the plant pot 4, that is, at the base, is also swept away by the lateral wind, and the overhumidity due to the water vaporized from the nutrient solution 2 in the trough 1 is also eliminated. It

The above-mentioned transfer material 12 has a fixed transfer width, and is applied only to the trough interval at that time. When the kinds of leafy vegetables 9 are different and the trough intervals are different, the fleeting materials having different widths are used. This is because, in general, leaf vegetables grown in the greenhouse are rarely changed after being determined once. However, if it is desired to be commonly used for any trough interval, as shown in (a) of FIG. It may be formed in the central part. In this case, the cross-linking material itself is composed of two members 13M and 13N on the left and right, and if the depth of the fitting joint is increased, the possibility of bending when the baffle plate is placed is reduced. 3 (b), a slit 19 is formed in the expandable portion 18, and a bolt 21 attached to the other member is inserted and fixed with a nut. You can also change the width. In any of the examples, a slight step is formed on the upper surface of the cross-linking material 13 to slightly tilt the posture when the baffle plate is placed, but this does not largely affect the flow of the temperature-adjusting air 16. For example, as described in Japanese Patent Publication No. Sho 63-60971 mentioned in the prior art, in the case where the trough interval is changed according to the leaves that grow as they grow, as shown in FIG. If the bridging material 12 having the flexible portion 18 is used, it is possible to follow the width change without replacing the bridging material each time the interval is changed.

Although the baffle plate 14 described above is a separate body from the bridging members 13 and 13, the bridging portion 23 and the baffle portion 24 may be integrated as in the bridging material 22 shown in FIG. In this case, any length can be obtained by cutting and bending a single thin metal strip such as aluminum or a plastic strip. Of course, the width of the baffle portion 24, which replaces the baffle plate, is also sufficient to cause the temperature-controlled air 16 to drift. By the way, as shown by the phantom lines in the figure, if the baffle portion 24 is formed with accordion type peaks and valleys having a broken line parallel to the extending direction of the trough 1, the above-mentioned expandable portion 18 is bridged. It is possible to exert the same effect as when it is formed in No. 13. When any of the above-mentioned materials is used, since the arm portion 13A and the leg portion 13B are connected to the baffle portion 24, it is less necessary to give the bridging material 22 a special reinforcement. When the bridging material 22 shown by the solid line in FIG. 4 is used, it may be possible to wind it up as shown in the drawing, which facilitates the handling in the work of arranging between the troughs and the tidying work. Become.

FIG. 5 shows a transfer material 32 composed of a cross-linking material 33 and a baffle plate 34. The baffle plate 34 is formed in a V-shaped angle shape so that it can be fitted into the recess formed in the cross-linking material 33. Can be posted. Therefore, there is an advantage that the rectifying effect of the temperature-controlled air is exerted by the angle-shaped baffle plate 34 opened upward, and the uneven flow is smoothed. The situation can be easily imagined from the example of FIG. Of course, if the opening width of the angle is increased and the tip end thereof is extended in the direction of the trough 1, the temperature-controlled air 16 can be concentrated on the leaf vegetables 9. As the baffle portion having such a guide function, a baffle portion 44 as shown in FIG. 6A may be used as the bridging member 42 integrated with the bridge portion 43. Then, as shown in FIG. 6B, if the flat portions 44A and 44A connected to the angle portion are formed on the left and right sides, the drift effect is promoted even when the angle molding is dimensionally restricted. Can be made. In any of the examples of FIGS. 6A and 6B, it is not easy to wind the coil as shown in FIGS. 4A and 4B, but it is convenient when the air supply pipe 20 described below is mounted.

By the way, there is a case where not only the temperature of air blown up between troughs can be controlled but also carbon dioxide and the like are actively supplied into the greenhouse to promote carbon dioxide assimilation. In that case, carbon dioxide gas can be mixed with the temperature-controlled air 16, but an air supply pipe connected by a hose to a separately installed carbon dioxide gas cylinder can be placed in parallel with the trough. . FIG. 7 shows an example in which the air supply pipe 20 is arranged on the transfer material 22 of FIG. A vinyl chloride pipe having a diameter of about 3 cm or the like is used as the air supply pipe 20, and is fixed to the upper surface of the transfer material 22 with a metal fitting 27. On the side surface of the air supply pipe 20, gas holes 20a, 20a for forming carbon dioxide gas or the like are provided at certain intervals in the extending direction of the trough 1, forming one row or two upper and lower rows. As can be seen from the figure, the gas holes 20a are ejected from the place where the air above the baffle portion 24 is stagnant. Therefore, the blown-out carbon dioxide gas does not immediately rise by the temperature-controlled air 16 and is sent out in the direction of the arrow 25 toward the leaf vegetables 9 as a wake of the temperature-controlled air 16 that is diverted. It will not diffuse into the warm room without functioning. Moreover, when the carbon dioxide gas is strongly or intermittently blown out, it also functions to change the temperature-controlled air flowing through the air circulation gaps 15 and 15 by its force. Note that such an air supply pipe 20 may be placed on the cross-linking material 13 shown in FIG. In that case, although depending on the diameter of the air supply pipe 20, the air supply pipe itself can function as a baffle plate.

Although FIG. 8 touches a little above, it is an example in which the air supply pipe 20 is placed on the angle-shaped baffle portion 44 (see FIG. 6A), and similarly, the baffle plate shown in FIG. It can also be placed on 34. It is also possible to form an arcuate recess in the cross-linking material and fit the air supply pipe 20 (not shown), or tightly fit the arcuate recess having a slightly narrow width. In the latter case, if the cross-linking material is fitted into the air supply pipe in advance and the cross-linking material is fitted into the receiving groove when the air supply pipe is placed between the troughs, the work time is reduced. be able to. As shown in FIG. 9, the baffle plates 54 are attached to the left and right parts where the air supply pipe 20 is fitted to the cross-linking materials 53, 53 having the arcuate concave portions 53a, or the baffle parts integrated in advance are attached. It can also be used as the formed transfer material 52. In such a case, if the gas holes 20a, 20a of the air supply pipe 20 are opened below the baffle portion formed by the baffle plate 54 or the like, they are mixed with temperature-controlled air that is drifted in the baffle portion. Carbon dioxide can be sent out toward the pot.

In any of the examples, an effective air supply form is realized so that the temperature-controlled air blown out from the temperature-control duct is brought into direct and sufficient contact with the leaves of leafy vegetables, and artificial air flow such as cold air or warm air is performed. It is possible to suppress the unnecessary emission and waste of the temperature-controlled air that has been specially created and contribute to photosynthesis. In particular, the generation of cross winds also suppresses overhumidification at the root where air is stagnant, which makes it possible to realize an optimal growing environment in which spoilage is unlikely to occur and to perform hydroponics. Note that it is extremely convenient to adopt the trough having the receiving grooves 5 and 5 shown in FIG. 1 in order to realize such a thing. The receiving groove is formed by forming protrusions to form grooves on the left and right side surfaces having a cross-sectional shape that has existed in the past, and is extremely simple. However, because the groove is continuous and the legs of the bridging material can be positioned arbitrarily, and also when the cross-linking material is placed alone between the troughs, a sliding movement form is adopted to facilitate placement work. It is possible to reduce the work efficiency and improve the work efficiency. Furthermore, since the cross-section is constant in the longitudinal direction, it is easy to perform pultrusion or extrusion molding, and it is possible to avoid the cost increase in manufacturing a long trough. It has a great advantage that it is done.

[Brief description of drawings]

FIG. 1 is a partially enlarged view of a trough-type hydroponic cultivation apparatus in which a transfer material is arranged between adjacent troughs to divert temperature-controlled air toward the leaf vegetables.

2A is a perspective view of a bridging material including a cross-linking material and a baffle plate, FIG. 2B is a perspective view of a cross-linking material showing an example in which the shape of the leg is different, and FIG. 2C is another leg structure. The front view of the crosslinked material provided with.

FIG. 3 is a cross-linking material in which a flexible portion for width change is formed in a central portion, (a) is a perspective view of a male-female fitting type, and (b) is a perspective view of a type fixed through a slit. Fig.

FIG. 4 is a perspective view of a transfer material in which a cross-linking material and a baffle plate are integrated.

FIG. 5 is a perspective view of a transfer material using an angle-shaped baffle plate opened upward.

FIG. 6A is a perspective view of a bridging material in which an angle-shaped baffle portion is integrated with a bridging material, and FIG. 6B is a perspective view of a bridging material in which a flat baffle portion is formed so as to be continuous with the angle portion. .

FIG. 7 is a front view when an air supply pipe is arranged above a cross-linking material.

FIG. 8 is a layout view in which an angled recess is formed in a central portion of the cross-linking material, and an air supply pipe is placed on the recess.

FIG. 9 is an arc-shaped recess formed in the center of the cross-linking material,
The perspective view seen from diagonally downward when a gas hole is opened below a baffle plate.

[Explanation of symbols]

1 ... Trough, 2 ... Nutrition solution, 3 ... Strip, 3a ... Hole, 4
... plant pot, 5 ... receiving groove, 9 ... leaf vegetables, 10 ... gap, 11 ... temperature control duct, 12 ... transfer material, 13B ... leg part, 14 ... baffle plate, 16 ... temperature control air, 18 ... expandable part , 20 ...
Air supply pipe, 20a ... Gas hole, 22 ... Passing material, 24 ...
Baffle part, 32 ... Handing material, 34 ... Baffle plate,
42 ... Handing material, 44 ... Baffle part, 52 ... Handing material, 53
a ... Recessed portion, 54 ... Baffle plate (baffle portion).

Claims (6)

[Scope of utility model registration request] 1. A strip in a horizontal position in which a pot is fitted in each of a large number of holes is inserted through the upper part,
In a hydroponic cultivation facility in which a plurality of troughs for circulating a nutrient solution are arranged in parallel and in the same plane at the bottom of the pot, on both outer sides of the troughs arranged at regular intervals. Is formed with a continuous receiving groove that opens upward along the direction in which the trough extends, and in the receiving groove on the facing surface of the adjacent trough,
A baffle is fitted around the left and right legs, and a baffle part is provided at the center of the baffle in the longitudinal direction of the trough to divert the temperature-controlled air rising from below the trough in each trough direction. A trough hydroponics device that is formed by extending. 2. The trough according to claim 1, wherein the bridging member has a width-changeable expandable portion for arranging in the receiving groove separated by an arbitrary distance in a central portion. Hydroponics equipment. 3. The trough type hydroponic cultivation apparatus according to claim 1, wherein the baffle portion has an angle shape that opens upward. 4. An air supply pipe for supplying carbon dioxide gas and the like is attached to the baffle portion, and the gas supply pipe is provided with gas holes for ejecting carbon dioxide gas and the like in the trough direction. The trough type hydroponic cultivation apparatus according to any one of claims 1 to 3. 5. A concave portion for fitting the air supply pipe is formed in the center of the transfer material, and the gas hole is located below a baffle portion arranged laterally of the air supply pipe. The trough-type hydroponic cultivation apparatus according to claim 4. 6. A strip in a horizontal posture, in which a pot is fitted in each of a large number of holes, is inserted through the upper part,
In the structure of a trough in a hydroponic cultivation facility in which a plurality of troughs for circulating a nutrient solution are arranged in parallel and in the same plane at the bottom of the pot, the troughs are provided on both outer side surfaces of each trough. A trough for hydroponic cultivation, which is formed with a continuous receiving groove that opens upward along the extending direction of the trough.