TW201528936A - Plant cultivation apparatus - Google Patents

Abstract

A plant cultivation apparatus is provided with a cultivation rack having a plurality of supporting frames arranged in multiple levels in the vertical direction, a cultivation bed body supported by each of the plurality of supporting frames, that forms a storage tank for storing a nutrient solution, a heat insulating layer applied to the outer side of the cultivation bed body, and a lighting part, supported by each of the plurality of supporting frames, for applying illumination in the direction of the cultivation bed on the lower level. Heat generated from the lighting is blocked by a heat insulating layer coating the cultivation bed body. The heat insulating layer is small size in comparison to a heat insulating material such as polystyrene foam or the like. For this reason, the impact of heat to the cultivation bed can be reduced and uniform cultivation conditions can be obtained, without increasing the size of the cultivation rack.

Description

Plant cultivation device

The present invention relates to a technique for cultivating plants by artificial light.

A technique related to a plant factory that illuminates plants with illumination light indoors is known. Patent Document 1 describes an example of a technique related to a plant factory.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1]

Japanese Patent Laid-Open No. 2012-39996

In plant plants, the desired light is supplied by artificial lighting devices in order to grow the plants. The lighting device generates heat while also generating heat. The heat it produces may have an impact on the growth of plants. For example, in the case where a temperature difference occurs between different places due to the heat of illumination, the cultivation environment of the plant becomes uneven due to the place, and thus it is not preferable. Therefore, a technique for suppressing the adverse effects of heat generated by illumination on the growth of plants is desired.

In one embodiment of the present invention, the plant cultivation apparatus includes: a cultivation stent including a plurality of support frames arranged in a plurality of stages in a vertical direction; and a cultivation bed body supported by each of the plurality of support frames, and Forming a storage tank for storing the culture liquid; a heat insulation layer applied to the outer side of the cultivation bed body; and an illumination portion supported by the plurality of branches Hold each of the frames and illuminate the direction of the cultivation bed in the lower section. The heat generated by the illumination is blocked by the heat insulating layer applied to the body of the cultivation bed. The heat insulating layer is smaller in size than a heat insulating material such as foamed styrene. Therefore, the influence of heat on the cultivation bed can be reduced without increasing the size of the cultivation support, and the cultivation conditions can be made uniform.

According to the present invention, there is provided a technique for suppressing the influence of heat generated by illumination on the growth of plants.

1‧‧‧Plant cultivation room

2‧‧‧Cultivation bracket

3‧‧‧ Ground

4‧‧‧ column

5‧‧‧Support framework

6‧‧‧Cultivated bed

6a‧‧‧Cultivated bed

6b‧‧‧Cultivated bed

7‧‧‧Lighting

8‧‧‧Culture tank

9‧‧‧Circulating pump

10‧‧‧liquid supply system

11‧‧‧ solenoid valve

12‧‧‧Water supply piping

13‧‧‧Drainage piping

14‧‧‧ Liquid level sensor

15‧‧‧ Temperature Regulation Department

16‧‧‧Air conditioner

17‧‧‧Drainage piping

18‧‧‧ solenoid valve

19‧‧‧ ceiling

20‧‧‧Upper piping

21‧‧‧Cultivated bed body

22‧‧‧Insulation coating

22a‧‧‧Insulation coating

22b‧‧‧Insulation coating

22c‧‧‧Insulation coating

22d‧‧‧Insulation coating

22e‧‧‧Insulation coating

22f‧‧‧Insulation coating

23‧‧‧ panel

24‧‧‧ culture solution

25‧‧‧ plants

26‧‧‧Water supply piping

27‧‧‧ Culture medium inlet

28‧‧‧Drainage piping

29‧‧‧ Culture liquid discharge

29a‧‧‧ Culture liquid discharge

30‧‧‧Water supply piping

30-1‧‧‧Water flow

30-2‧‧‧Water flow

31‧‧‧ hole

32‧‧‧Water flow

33‧‧‧Water flow

35‧‧‧Fixed metal parts

36‧‧‧Support

37‧‧‧Insulation coating

38‧‧‧Cultivated bed frame

39‧‧‧Watertight sheets

The above and other objects, advantages and features of the present invention will become apparent from The following are included in the accompanying drawings.

Figure 1 is a front view showing a plant cultivation apparatus.

Figure 2 is a side view of the cultivation stent.

Fig. 3 is a side view showing the vicinity of the cultivation bed in an enlarged manner.

Figure 4 is a plan view of the cultivation bed.

Figure 5 is a plan view of a cultivation bed.

Figure 6 is a front view of the cultivation bed.

Figure 7 is a front view of the cultivation bed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 shows a plant cultivation apparatus according to an embodiment of the present invention. A front view showing the plant cultivation apparatus viewed from the positive direction of the x-axis of the coordinate system shown in Fig. 1. A plant cultivation room 1 is prepared inside the building. Usually, the plant cultivation room 1 is provided with a window for allowing light to enter from the outside, and only the artificial light is used as a light source for cultivating the plants.

A plant cultivation device is provided in the plant cultivation room 1. The plant cultivation apparatus includes a cultivation holder 2 placed on the ground 3. The cultivation stent 2 includes a plurality of columns 4 and a plurality of support frames 5 supported by the columns. The columns 4 or the support frame 5 are difficult to corrode in water or fertilizer salts. The material of the material with high thermal conductivity (aluminum, synthetic resin coated with metal plating, stainless steel) is formed.

Each of the support frames 5 functions as a shelf or frame that supports the cultivation bed 6. The cultivation bed 6 is formed of the same material as the support frame 5. The support frame 5 is arranged in a plurality of stages in the vertical direction (the z-axis direction in Fig. 1). The support frame 5 is further arranged in parallel in the horizontal direction (the y direction of FIG. 1). Illumination 7 is mounted on the lower side of each support frame 5. The illumination 7 illuminates the plants of the cultivation bed 6 planted on the lower side thereof. As the illumination 7, a fluorescent lamp or the like may be used, but it is preferable to use an LED (Light Emitting Diode) that selectively outputs light of a wavelength band required for growth of a plant.

Fig. 2 is a side view of the cultivation holder 2 as seen from the positive direction of the y-axis. Fig. 3 is a cross-sectional view showing the vicinity of a cultivation bed 6 in a state in which the plant 25 is being cultivated. The cultivation bed 6 has an elongated planar shape in which the y-axis direction is a longitudinal direction. The cultivation bed 6 includes a cultivation bed main body 21 having a shape in which a liquid (culture liquid) container can be stored, and a heat insulation layer formed by applying a heat insulating coating 22 to the cultivation bed main body 21.

The heat insulating coating 22 prevents excess heat from being transferred to the cultivation bed 6. In particular, the illumination 7 on the lower side, that is, the heat generated by the illumination 7 for supporting the support frame 5 of a certain section and for illuminating the cultivation bed 6 on the lower side is easily transmitted to the cultivation bed 6 supported by the support frame 5. The heat from the underside illumination 7 can be effectively insulated by the heat insulating coating 22. Since the heat-insulating paint 22 has a small film thickness (order of several mm or less), it is possible to prevent the size of the cultivation holder 2 from becoming larger than when a heat insulating material such as foamed styrene is used. Therefore, the heat insulating coating 22 is suitable for use in the cultivation holder 2 having a plurality of cultivation beds 6 which are stacked in a plurality of stages.

As shown in FIG. 3, as shown in the heat insulating paints 22a, 22b, 22c, and 22d, the heat insulating coating 22 is applied so as to cover the respective surfaces of the cultivation bed main body 21. The lower surface of the cultivation bed body 21 is coated with a heat insulating coating 22a. The heat insulating coating material 22b is applied to the bottom surface of the cultivation bed main body 22, that is, the bottom surface of the storage portion for storing the culture liquid. The side surface in the longitudinal direction of the outer side of the cultivation bed main body 22, that is, the side surface which is substantially perpendicular to the x-axis direction, is coated with a heat-insulating paint 22c. The side surface in the longitudinal direction of the inner side of the cultivation bed main body 22, that is, the side surface on the inner side substantially perpendicular to the x-axis direction, is coated with the heat insulating coating material 22d. Further, it is also preferable to apply the heat insulating coatings 22e and 22f to the outer surface and the inner surface of both end portions in the longitudinal direction of the cultivation bed 6.

The heat insulating coating material 22 is preferably used as a material which exhibits high heat insulating properties in a state of being applied and dried. As an example of such a coating, a ceramic heat insulating coating is known. In the ceramic heat-insulating paint, a powder of ceramic fine particles (exemplified: 10 to 100 μm in diameter) is mixed in a solvent. Each of the microparticles has a hollow inner space, and the inner space is preferably a vacuum (reduced pressure environment). The heat insulating coating forms a layer in which fine particles of ceramics are densely formed in the coating film in a state of being coated and dried. This layer has a high reflection performance against reflection from external heat and a thermal insulation property that hinders conduction of heat to the film thickness direction. As an example of such a ceramic heat insulating coating, the trade name "PENTA GUARD" of EXELA Co., Ltd. is mentioned.

As the heat insulating coating 22, it is preferable to use a material having a relatively high thermal conductivity in the in-plane direction, that is, in the direction along the bottom surface of the cultivation bed 6 (the direction in the xy plane). When such a material is used, the thermal gradient of the length of the cultivation bed 6 can be made uniform by the heat conduction of the heat insulating coating material 22, and the growth conditions of the plants 25 in the cultivation bed 6 can be made uniform. The ceramic heat-insulating paint has a coating material in which the fine particles of the ceramic are aligned in the in-plane direction to form a film, and the ceramic film is formed in a vertical direction and does not contain ceramic fine particles. Layered layer. Such a ceramic heat-insulating paint is less likely to be thermally blocked by the ceramic fine particles in the in-plane direction, and therefore has a relatively high thermal conductivity and is suitable for use as the heat insulating coating 22. More preferably, the thermal barrier coating 22 has a thermal conductivity in the in-plane direction that is greater than the material of the cultivation bed body 21.

The culture solution 24 of the aqueous solution in which the fertilizer salt or the like which is useful for growing the plant 25 is mixed is supplied to the inside of the cultivation bed 6. A panel 23 is provided on the upper portion of the storage portion of the cultivation bed 6. A hole is provided in the panel 23 to support the plant 25 by a portion such as a stem. The plant 25 is supported on the panel 23 by planting the plant 25 in the hole of the panel 23. In this state, plant The root of the substance 25 is immersed in the culture liquid 24, and the leaves (portions which are exposed upward from the ground surface when cultivated with the soil) are exposed to the upper portion of the panel 23. The plant 25 absorbs the nutrients of the water and the fertilizer salt of the culture solution 24 from the root, and grows by using the light from the illumination 7 of the upper stage.

Figure 4 is a plan view of the cultivation bed 6. The state in which the panel 23 and the plant 25 in Fig. 3 are removed is shown. The culture liquid introduction port 27 and the culture solution discharge port 29 are provided on the bottom surface of the cultivation bed 6. These positions are provided in the vicinity of both ends in the longitudinal direction (y-axis direction) of the cultivation bed 6. In the example of FIG. 4, the culture liquid introduction port 27 is provided in the vicinity of the end portion of the cultivation bed 6 in the negative direction of the y-axis, and the culture solution discharge port 29 is provided in the vicinity of the end portion in the positive direction of the y-axis. In FIG. 4, two of the culture liquid introduction port 27 and the culture solution discharge port 29 are respectively depicted, but the number of these is appropriately determined depending on the design. The culture liquid introduction port 27 is connected to the water supply pipe 26, and the culture liquid discharge port 29 is connected to the drainage pipe 28.

The culture solution 24 flows into the water supply pipe 26 at a flow rate controlled to a specific value. This culture solution 24 is supplied from the culture solution introduction port 27 to the inside of the cultivation bed 6. The culture solution 24 is discharged from the culture solution discharge port 29 to the drainage pipe 28 at the same flow rate. As a result, the culture liquid 24 forms the fixed flow rate of the water streams 30-1, 30-2 and flows in the longitudinal direction inside the cultivation bed 6, so that the fresh culture liquid 24 is always supplied to the cultivation bed 6. In order to make the flow of the culture solution 24 smooth, the cultivation bed 6 may be disposed so as to slightly decrease the side of the culture liquid discharge port 27 with respect to the culture liquid introduction port 27.

The plant cultivation apparatus including the above configuration operates as follows. A culture solution tank 8 is provided inside the plant cultivation room 1. The culture solution 24 is stored in the culture solution tank 8. The level of the culture solution 24 inside the culture tank 8 is monitored by the liquid level sensor 14. If the liquid level inside the culture tank 8 is lower than a specific reference, the solenoid valve 11 is opened in response to the detection signal indicating the liquid level sent by the liquid level sensor 14, and the water is supplied from the liquid supply system 10 to the culture tank 8 or The culture solution 24 is until a certain amount of liquid level is reached. The control of the solenoid valve 11 based on the detection signal of the liquid level sensor 14 is automatically performed by a control device realized by a computer. In the case of supplying water, in order not to lower the concentration of the fertilizer salt or the like of the culture solution 24 When it is low, the culture component is supplied to the culture tank 8.

The temperature adjustment unit 15 is further provided in the culture solution tank 8. The temperature adjustment unit 15 automatically controls the culture solution by a temperature control mechanism such as a Peltier element by monitoring the temperature of the water inside the culture solution tank 8 by a temperature sensor and keeping the water temperature within a fixed range. 24 temperature.

The culture liquid 24 in the inside of the culture tank 8 is supplied to each of the cultivation beds 6 of the cultivation holder 2 by the circulation pump 9. Specifically, the culture solution 24 is pumped up from the culture solution tank 8 to the water supply pipe 12 by the circulation pump 9. The front end of the water supply pipe 12 is connected to the water supply pipe 26 (FIG. 4) of each of the cultivation beds 6, and the culture liquid 24 is supplied from the culture liquid introduction port 27 to the inside of the cultivation bed 6. The culture solution 24 flows through the inside of the cultivation bed 6, and is discharged from the culture solution discharge port 29 to the drainage pipe 28. The discharged culture solution 24 is returned to the culture solution tank 8 through the drain pipe 13. As described above, a circulation system of the culture solution 24 is formed between the culture solution tank 8 and each of the cultivation beds 6. A filter for removing impurities in the culture solution 24 is further provided in the circulation system.

Each of the illuminations 7 of the cultivation holder 2 is lighted, and the light is irradiated to the plant 25 of the cultivation bed 6 disposed in the lower side of each illumination 7. The plant 25 of each of the cultivation beds 6 grows by absorbing the moisture and nutrients of the culture solution 24 from its root and receiving the light of the illumination 7 on the blades.

As shown in Fig. 4, the culture solution 24 is supplied from one end in the longitudinal direction (culture solution introduction port 27) to the cultivation bed 6, and the culture solution is discharged from the other end (culture solution discharge port 29). The heat of the illumination 7 mounted on the lower side of the same support frame 5 is applied to the cultivation bed 6. Therefore, it is assumed that a water temperature in the cultivation bed 6 causes a temperature difference when no heat countermeasure is implemented. That is, with respect to the water flow 30-1 on the upstream side, the water flow 30-2 on the downstream side is heated by the illumination 7 for a long time, so that the temperature becomes high. As a result, there is a possibility that the plant 25 grows unevenly in the longitudinal direction of the cultivation bed 6. In plant factories, the advantages of plant quality are fixed, so this unevenness is not good.

In the present embodiment, the heat insulating coating material 22a is applied to the lower surface of the cultivation bed 6, and the heat insulating coating material 22b is applied to the bottom surface. By the heat insulating coatings 22a, 22b, the self-planting can be reduced The effect of the heat received by the illumination 7 directly below the bed 6. As a result, the temperature difference in the longitudinal direction of the cultivation bed 6 can be lowered, and the growth of the plant 25 can be made uniform.

In the present embodiment, the heat insulating paints 22c and 22d are applied to the outer surface and the inner surface of the side surface in the longitudinal direction of the cultivation bed 6. In the case of coating on the same surface, it is particularly preferable to adopt the in-plane direction (the direction parallel to the side on which the heat insulating coatings 22c and 22d of the cultivation bed 6 are applied, in the examples of FIGS. 3 and 4). The heat insulating coatings 22c and 22d having relatively high thermal conductivity in the direction of the yz plane. The heat is moved in the water flow direction by the heat insulating coatings 22c and 22d, whereby the thermal gradient in the longitudinal direction of the cultivation bed 6 can be made smaller, and the growth conditions of the plants 25 can be further uniformized.

This effect is not limited to that which can be obtained in the cultivation bed 6 to which the culture liquid 24 is supplied as shown in FIG. Fig. 5 shows another configuration example of the cultivation bed 6a. In this example, a water supply pipe 30 such as a Piccolo Tube having a tubular shape elongated in the longitudinal direction of the cultivation bed 6a and having a plurality of holes 31 arranged in the extension direction is disposed inside the cultivation bed 6a. In the example of Fig. 5, the water supply pipe 30 is introduced into the inside of the cultivation bed 6a from the negative y-axis direction, and the tip end thereof is disposed in the vicinity of the end portion of the cultivation bed 6a in the positive y-axis direction. The root of the water supply pipe 30 is connected to the water supply pipe 12 of Fig. 1 . In this case, the culture liquid discharge port 29a is provided at the end of the cultivation bed 6a near the root portion (negative direction of the y-axis) of the water supply pipe 30. The cultivation bed 6a may be disposed so as to be inclined so as to slightly descend toward the side of the culture solution discharge port 29a (the negative side in the y-axis direction).

In the case of the cultivation bed 6a including the configuration of Fig. 5, when the culture liquid 24 to which the pressure is applied by the circulation pump 9 is supplied to the inside of the water supply pipe 30, the culture liquid 24 is supplied from the respective holes 31 to the cultivation bed 6a. Inside, the water flow 32 in the width direction (x-axis direction) of the cultivation bed 6a is formed. The water flow 32 is at both ends in the width direction of the cultivation bed 6a, and is a water flow 33 in the longitudinal direction of the culture liquid discharge port 29a, and is discharged from the culture liquid discharge port 29a to the drainage pipe 13. With this configuration, the culture liquid inside each of the cultivation beds 6a can be circulated at a fixed flow rate.

That is, in the case where the configuration of Fig. 5 is facilitated, when any heat countermeasure is not performed, the temperature gradient on the downstream side of the water stream 33 is increased due to the heat from the illumination 7 below. Therefore, as in the case of Fig. 4, by applying the heat insulating coating materials 22a to 22f, the influence of heat from the illumination 7 can be reduced. Further, by the heat conduction of the heat insulating coating materials 22a to 22f, the temperature in the longitudinal direction of the cultivation bed 6a can be made uniform.

Preferably, the plant cultivation apparatus further includes the upper pipe 20 shown in Fig. 1 . The air conditioner 16 for adjusting the temperature and humidity of the plant cultivation room 1 supplies cold air or the like to the ceiling space near the ceiling 19 of the plant cultivation room 1. By providing the upper pipe 20, the culture liquid 24 can be cooled by the cold air of the air conditioner 16.

As described above, the culture liquid 24 inside the culture solution tank 8 is pumped to the water supply pipe 12 by the circulation pump 9, and is supplied to the cultivation bed 6 and recovered from the cultivation bed 6 to the drainage pipe 13 And return to the culture tank 8. The water supply pipe 12 is further connected to one end of the upper pipe 20 provided at a position between the uppermost stage of the cultivation bracket 2 and the ceiling 19. The other end of the upper pipe 20 is connected to the drain pipe 13.

The culture solution 24 is supplied from the water supply pipe 12 to the upper pipe 20. The cold air output from the air conditioner 16 is usually supplied to the vicinity of the ceiling space of the plant cultivation room 1 in many cases. Therefore, cold air is supplied to the ceiling space at a relatively large flow rate. The culture liquid 24 flowing through the upper pipe 20 is effectively cooled by the cold air and returned to the culture liquid tank 8.

The temperature of the culture solution 24 circulated in the cultivation bed 6 rises due to the heat of the illumination 7. Therefore, the temperature of the culture solution 24 inside the culture tank 8 tends to rise. The temperature adjusting unit 15 cools the culture solution 24 and maintains the temperature within a fixed range. In the plant cultivation apparatus, by providing the upper pipe 20, the temperature rise of the culture liquid 24 can be suppressed, and the electric power required for the operation of the temperature adjustment unit 15 can be suppressed.

Further, in order to suppress an increase in the temperature of the culture solution 24, a drain of the air conditioner 16 may be used. When the air conditioner (16) is cooled, the water vapor in the air is condensed on the surface of the cooling pipe which is cooled by vaporization of the refrigerant, thereby generating liquid water. The water system It is discharged for drainage. Since the drainage is water condensed on the surface of the cooling pipe, the temperature is lower than room temperature. Therefore, the drainage can be used as cooling water.

The drain generated by the air conditioner 16 is supplied to the drain pipe 17. The drain pipe 17 is connected to the culture tank 8 via a solenoid valve 18. In such a configuration, the solenoid valve 18 is controlled as follows.

The control device of the culture tank 8 usually opens the solenoid valve 18 to supply the liquid to the culture tank 8. By this drainage, the temperature of the culture solution 24 inside the culture solution tank 8 can be lowered. When it is determined that the liquid level of the culture solution tank 8 is equal to or greater than the upper limit value set according to the detection signal of the liquid level sensor 14, or the culture liquid inside the culture liquid tank 8 is judged based on the detection value of the temperature sensor When the temperature of 24 is below the preset lower limit value, the control device closes the solenoid valve 18 and stops supplying water to the drain. By such an operation, the electric power for operating the Peltier element or the like by the temperature adjustment unit 15 for cooling can be suppressed. Further, the amount of liquid supplied from the liquid supply system 10 can be suppressed.

As the constitution of the cultivation bed 6, a configuration different from that described above may be employed. In the above description, as shown in FIG. 6, a water tank system having an independent structure is used as the cultivation bed 6. Such a cultivation bed 6 is used by being placed on the support frame 5 and fixing the support frame 5 by a fixing metal member 35 or the like.

On the other hand, in the cultivation bed 6b of FIG. 7, the water tank which has the structure independent of the support frame 5 is not used. The plane constituting the bottom surface of the cultivation bed 6 is formed by a plurality of supports 36 having a surface coated with the heat insulating coating 37. The plurality of support bodies 36 may be combined as one structural member or may be supported as a separate component by the support frame 5 of the cultivation holder 2.

A cultivation bed frame 38 is fixed to the upper surface of the support body 36. The cultivation bed frame 38 forms a side wall surface that protrudes from the support body 36 to the upper surface, and forms a rectangular planar shape in which the y-axis direction is the longitudinal direction, similarly to the cultivation bed 6 of Fig. 4 . Support formed in such a manner by using a soft sheet-like material such as synthetic resin and not covering the water-permeable sheet 39 through which the liquid passes The body 36 is above the cultivation bed frame 38. The cultivation bed 6b can be formed by supplying the culture solution 24 from above the water-impermeable sheet 39 to the inside of the region surrounded by the cultivation bed frame 38. Since the cultivation bed body 21 in Fig. 6 is not required, it can be lightweight. In this case, the constituent elements corresponding to the culture solution introduction port 27 and the culture solution discharge port 29 in Fig. 4 are opened by the vicinity of both ends of the y-axis of the water-impermeable sheet 39 to maintain watertightness, respectively. The method is formed by being connected to the water supply pipe 26 and the drain pipe 28. Alternatively, the water supply pipe 26 and the front end portion of the drain pipe 28 may be disposed above the cultivation bed 6b as the culture liquid introduction port 27 and the culture liquid discharge port 29, and the culture liquid may be supplied from the upper side. Further, even in the cultivation bed 6 having the configuration shown in Fig. 6, the same sheet as the water-impermeable sheet 39 shown in Fig. 7 can be used. In this case, since the height of the plant bed 21 or the heat insulating coating 22 is not required to be high, the range of material selection can be expanded.

The present invention has been described above with reference to a certain number of embodiments, and these embodiments are merely illustrative of the invention and are not intended to limit the scope of the claims. The embodiments described above can be variously modified within the scope of the invention. For example, any combination of the above embodiments in a range without contradiction is included in the embodiment of the present invention.

1‧‧‧Plant cultivation room

2‧‧‧Cultivation bracket

3‧‧‧ Ground

4‧‧‧ column

5‧‧‧Support framework

6‧‧‧Cultivated bed

7‧‧‧Lighting

8‧‧‧Culture tank

9‧‧‧Circulating pump

10‧‧‧liquid supply system

11‧‧‧ solenoid valve

12‧‧‧Water supply piping

13‧‧‧Drainage piping

14‧‧‧ Liquid level sensor

15‧‧‧ Temperature Regulation Department

16‧‧‧Air conditioner

17‧‧‧Drainage piping

18‧‧‧ solenoid valve

19‧‧‧ ceiling

20‧‧‧Upper piping

Claims (4)

A plant cultivation apparatus comprising: a cultivation support, which is disposed in a cultivation bracket of a room, and includes a plurality of support frames arranged in a plurality of stages in a vertical direction with respect to a floor of the room; the cultivation bed is supported Each of the plurality of support frames forms a storage tank for storing the culture solution; a heat insulation layer applied to the outside of the cultivation bed; and an illumination unit supported by each of the plurality of support frames And illuminating the direction of the cultivation bed in the lower section; the culture liquid tank; the culture liquid circulation system, wherein the culture liquid is circulated between the culture liquid tank and the cultivation bed; and the temperature control unit controls the above a temperature of the culture solution inside the culture tank; an air conditioner that supplies cold air to the room in which the cultivation bracket is disposed; and a drain pipe that discharges liquid from the air conditioner discharged from the air conditioner To the above culture tank. The plant cultivation apparatus of claim 1, wherein the heat insulating layer is formed of a material having a thermal conductivity greater than that of the cultivation bed. A plant cultivation apparatus according to claim 1 or 2, wherein said heat insulating layer covers a bottom surface and a side surface of said cultivation bed. The plant cultivation apparatus according to claim 1 or 2, wherein the air conditioner supplies cold air to a space between the cultivation bracket and a ceiling of the room, that is, a ceiling space, The culture solution circulation system includes a pipe disposed above the ceiling space, and the culture liquid is supplied to the cultivation bed after passing through the upper pipe.