Plant cultivation device

Abstract

To provide a plant cultivation device that is resistant to typhoons, violent storms, and other natural disasters, and that enables adjustment of spatial environmental elements such as light, temperature, humidity, and wind speed with minimal electricity.SOLUTION: A plant cultivation device 100 comprises: a concrete outer wall member formed in a cylindrical or substantially cylindrical shape, in which the part installed on the ground has a circular or elliptical cross section, and its internal height is 7 m to 13 m and its length is 25 m to 35 m; a cooling pad disposed at one end surface of the outer wall member; an exhaust fan disposed at the other end surface of the outer wall member; and lighting fixtures provided on the outer wall member.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention mainly relates to a plant cultivation device for cultivating vegetables, fruits, and the like. In particular, it relates to an excellent plant cultivation device for areas such as deserts that are dry and have relatively high daytime temperatures.

Background Art

[0002] Conventionally, various greenhouses have been proposed as plant cultivation devices for indoor cultivation. For example, a greenhouse has been proposed that can optimally automatically control the temperature inside the greenhouse according to the growth of agricultural crops. Such a greenhouse has a projector and a light receiver arranged opposite to each other with the agricultural crops cultivated inside the greenhouse in between, and eight photoelectric sensors are arranged in parallel at a predetermined interval in the vertical direction. The height of the agricultural crops is measured by the photoelectric sensors, and the temperature inside the greenhouse is controlled to a set temperature set in advance according to the height of the agricultural crops (Patent Document 1).

[0003] However, such an invention has problems that it requires a large amount of power for temperature control, so the efficiency is poor, and since it can only adjust the temperature, it is impossible to efficiently cultivate plants. In addition, due to intense storms and typhoons in recent years, greenhouses are often damaged and may suffer large losses.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the present invention has been made in view of the above-described problems, and an object thereof is to provide a plant cultivation device that is resistant to typhoons, storms, and other natural disasters and can adjust spatial environmental factors such as light, temperature, humidity, and wind speed with low power.

Means for Solving the Problems

[0006] In order to solve the above problems, the present invention employs the following means. The plant cultivation device according to the present invention has an outer wall member made of concrete in a cylindrical or substantially cylindrical shape, the cross-section of the portion disposed on the ground being formed in a circular or elliptical shape, the inner height being 7 m to 13 m, and the length being 25 m to 35 m, a cooling pad disposed on one end face of the outer wall member, an exhaust fan installed on the other end face of the outer wall member, a lighting fixture provided on the outer wall member, and is characterized by including these components.

[0007] By adopting such a configuration, it is possible to adjust the elements of light, temperature, humidity, and wind, and to set an optimal growth environment for plants for photosynthesis. In addition, by making it of concrete, it is possible to obtain a plant cultivation device that is resistant to typhoons, storms, extreme heat, dryness, heavy snow, and other natural disasters.

[0008] Further, in the plant cultivation device according to the present invention, it may be characterized in that holes through which water can flow are formed inside the outer wall member. By adopting such a configuration, the temperature inside the plant cultivation device can be adjusted more easily.

[0009] Furthermore, in the plant cultivation device according to the present invention, it may be characterized in that an opening / closing skylight is provided in the ceiling portion of the outer wall member. By adopting such a configuration, sunlight can be introduced into the interior, and photosynthesis can be promoted.

[0010] Furthermore, the present invention provides a method for cultivating plants, which is characterized by adjusting an exhaust fan so that the internal wind speed becomes 2.5 m / s to 4.9 m / s and growing plants using the above-described plant cultivation apparatus. By adjusting the wind speed within such a range, an optimal plant growth environment can be easily adjusted.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0012] Hereinafter, the plant cultivation apparatus 100 according to the embodiment will be described in detail with reference to the drawings. Note that the embodiments and drawings described below are examples of a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and can be appropriately changed without departing from the gist of the present invention. Corresponding components in each figure are denoted by the same or similar reference numerals.

[0013] As shown in FIG. 1, the plant cultivation apparatus 100 according to the present invention includes an outer wall member 10 made of cylindrical or substantially cylindrical concrete, a cooling pad 20 disposed at one end of the outer wall member 10, an exhaust fan 30 disposed at the other end on the opposite side of the cooling pad 20, and a lighting member 40.

[0014] The outer wall member 10 is made of concrete. The part placed on the ground has a circular or elliptical cross-section and is formed into a cylindrical or substantially cylindrical shape as a whole. It is preferable that the outer wall member 10 is manufactured with an outer wall thickness of 3 cm to 5 cm. This is because it can completely prevent damage from natural disasters such as typhoons and wind and rain, and can effectively prevent the transmission of the internal temperature to the outside. The highest position on the inner wall surface of the outer wall member 10 is 7 m to 13 m, and it is desirable that the length in the longitudinal direction is manufactured to be 25 m to 35 m. By manufacturing within such a range, the air inside the outer wall member 10 can be effectively circulated, and the occurrence of a part where the air flow stagnates can be prevented.

[0015] As shown in FIG. 2, the outer wall member 10 may be notched on the bottom side so that there is no concrete outer wall member 10 on the lower side, and plants may be cultivated by directly using the soil on the ground. Alternatively, as shown in FIG. 3, the outer wall member 10 may be installed as it is and used in a hydroponic cultivation manner.

[0016] Note that styrofoam (not shown) may be attached to the outer wall member 10 along the inner wall. By providing styrofoam, the heat insulation performance can be improved. Also, as shown in FIG. 2, holes 13 may be provided so that hot water or cold water can be passed through the inside of the outer wall member 10 according to the external air environment such as the air temperature at the installation location. Water may be directly poured into the holes 13, or water may be flowed with a hose provided with a plurality of holes disposed inside the holes 13. By making it possible to flow water through the holes in this way, the temperature of the concrete can be changed by selecting and flowing cold water or hot water, and the temperature inside the plant cultivation device 100 can be changed.

[0017] Furthermore, as shown in Fig. 1, an openable and closable skylight 15 may be provided on the outer wall surface of the outer wall member 10. By opening and closing the skylight 15, outside air can be introduced into the interior, and the internal environment can be adjusted. Also, a mirror member 55 capable of reflecting light may be provided outside the outer wall member 10 so that sunlight can be introduced into the outer wall member 10. By doing so, the amount of light inside can be increased, and light can be applied to the back side of the leaves. It has been confirmed by the inventor's research that the effect of photosynthesis is enhanced by applying light to the back side of the leaves. Therefore, photosynthesis can be promoted efficiently, and growth can be promoted. Furthermore, a reflector 50 such as a mirror may be provided so that light from the skylight or LED light is reflected and the back side of the leaves is irradiated with light. By providing this reflector 50, light can be effectively applied to the back side of the leaves. Also, it becomes possible to directly introduce sunlight into the interior. Furthermore, a sprinkler may be optionally provided inside.

[0018] On one end of the outer wall member 10, as shown in Fig. 1, a cooling pad 20 is provided. The cooling pad 20 is made of a water-absorbing member in which a plurality of holes or slits through which air can easily pass, such as a honeycomb shape or a lattice shape, are formed. Above such a cooling pad 20, a water supply device for flowing water is provided, and it is basically used in a state of being moistened with water. When air passes through the wet cooling pad 20, the water is heated by the air and evaporated, and at this time, the heat of the air is taken away and the temperature of the air is lowered, and the air with a lowered temperature is introduced into the interior. Thereby, the internal temperature can be lowered. Also, since the air that has passed through the cooling pad 20 contains a large amount of water vapor, it also has a function of increasing the humidity inside the plant cultivation device 100. Note that the cooling pad 20 is preferably made of paper coated with copper.

[0019] On the other end of the outer wall member 10, which is the side opposite to the cooling pad 20, as shown in Fig. 1, an exhaust fan 30 is provided, and the air inside the plant cultivation device 100 can be discharged to the outside. The number and size of the exhaust fans 30 are not particularly limited and can be appropriately selected.

[0020] Inside the plant cultivation device 100, as shown in FIG. 2, when cultivating plants that grow tall like tomatoes, etc., the outer wall member 10 with a cutout on the lower side may be used, and it is advisable to use the soil on the ground as it is. In this case, a plurality of lighting members 40 for photosynthesis are provided on the inner wall surface of the outer wall member 10. The lighting member is not particularly limited, but preferably an LED is used. On the other hand, in the case of plants with low height such as melons and strawberries, as shown in FIG. 3, without directly using the soil on the ground, another shelf may be provided for cultivation or hydroponics may be carried out.

[0021] As described above, the fabricated plant cultivation device 100 functions as follows. The spatial environment within the plant cultivation device 100 that affects plant growth needs to appropriately regulate elements such as light, temperature, humidity, and wind. By this regulation, photosynthesis can be promoted, growth can be accelerated, and yield can be increased. The plant cultivation device 100 according to the present invention is fabricated such that the diameter of the circular cross-section of the outer wall member 10 is 7 m to 13 m, and the length direction is 25 m to 35 m. By fabricating it to this size, by rotating the exhaust fan 30, the wind speed of the internal air can be stably sent out at 2.5 m / s to 4.9 m / s, which is the degree at which tree leaves and fine twigs are constantly moving. Moreover, by making it circular or substantially circular in cross-section, the overall air can always flow without air stagnation or pooling. If the length or height of the outer wall member 10 becomes longer, even if a large and strong exhaust fan 30 is used, it has been proven by the inventor's experiments that it is very difficult to flow the entire interior of the plant cultivation device 100 at 2.5 m / s to 4.9 m / s. With a wind flow of 2.5 m / s to 4.9 m / s or less, air circulation is poor and the cooling effect within the plant cultivation device 100 also becomes low. On the contrary, by flowing at 2.5 m / s to 4.9 m / s, not only does the cooling effect of the air itself at the cooling pad 20 become low, but the internal air can be effectively circulated, so the effect of cooling the internal temperature becomes high. Also, by flowing air at a flow rate of 2.5 m / s to 4.9 m / s, the internal humidity can be adjusted by regulating the air flow passing through the cooling pad 20. By making it possible to adjust the air temperature in this way, the CO2 absorption of plants can be promoted. Because when the air is dry, the plant leaves close their stomata and do not absorb CO2, and photosynthesis does not proceed. In order to open the stomata, appropriate humidity and flowing air are required, but such elements can be adjusted.

[0022] Furthermore, in the present invention, by flowing cold water or warm water through the holes in the concrete, the temperature of the outer wall can be adjusted, making it easier to adjust the temperature. In particular, the temperature can be adjusted to be either high or low depending on the temperature of the flowing water.

[0023] Furthermore, when a skylight 15 that can be opened and closed is provided on the outer wall surface of the outer wall member 10, the temperature can be adjusted by opening and closing the skylight 15. Also, the intensity of light can be adjusted.

[0024] Furthermore, the internal humidity and temperature can also be adjusted by changing the amount of water flowing through the cooling pad 20.

[0025] Thus, according to the present invention, by adjusting the elements of light, temperature, humidity, and wind by a plurality of means, for example, it becomes possible to harvest three crops a year for melons, and it is also possible to harvest two fruits per stem. Moreover, by making the cross-section circular, since the wind flows in any position, the cultivation location can be installed anywhere.

[0026] It should be noted that the present invention is not limited to the above-described embodiments at all, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

Industrial Applicability

[0027] As shown in the above-described embodiments, it is possible to provide a plant cultivation device that can be installed in extremely cold or hot regions and can be used industrially.

Explanation of Reference Numerals

[0028] 10... outer wall member, 13... hole, 15... skylight, 20... cooling pad, 30... exhaust fan, 40... lighting member, 100... plant cultivation device

Claims

1. A cylindrical or substantially cylindrical concrete outer wall member, the cross-section of the portion disposed on the ground being formed in a circular or elliptical shape, with an inner height of 7 m to 13 m and a length of 25 m to 35 m, a cooling pad disposed on one end face of the outer wall member, an exhaust fan installed on the other end face of the outer wall member, a lighting member provided on the outer wall member, and a plant cultivation device characterized by comprising the above.

2. The plant cultivation device according to claim 1, characterized in that holes through which water can flow are formed inside the outer wall member.

3. The plant cultivation device according to claim 1, characterized in that an opening / closing skylight is provided in the ceiling portion of the outer wall member.

4. In a method for cultivating plants using the plant cultivation device according to any one of claims 1 to 3, a method for cultivating plants, characterized by growing by adjusting an exhaust fan so that the internal wind speed becomes 2.5 m / s to 4.9 m / s.

Images