Greening apparatus

Abstract

To provide a greening apparatus that can healthily grow plants by utilizing carbon dioxide in a living space of low illuminance, and a greening apparatus that can supply high-concentration carbon dioxide to plants without using an energy source such as an external power source.SOLUTION: A greening apparatus includes: a carbon dioxide concentration controller which discharges carbon dioxide-containing gas having higher concentration of carbon dioxide than air sucked from inside a room; and a cultivation device which supplies the carbon dioxide-containing gas to plants, wherein the cultivation device has: a planting base on which plants are planted; and a reflector plate which is provided on the planting base, has a through hole for allowing the carbon dioxide-containing gas supplied from the carbon dioxide concentration controller to pass, and reflects light, the carbon dioxide concentration controller has: a dehumidifying part which removes moisture vapor contained in air; and a carbon dioxide supply part which includes a carbon dioxide adsorbing / releasing material containing an amine compound capable of adsorbing / releasing carbon dioxide, and discharges the carbon dioxide-containing gas.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a greening device. [Background technology]

[0002] Conventionally, plant cultivation devices installed in plant factories and the like have been used to artificially create an environment suitable for growing crops indoors. For example, Patent Document 1 discloses a device that supplies carbon dioxide from a high-pressure cylinder to plants. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-205072 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a plant cultivation device, such as that installed in a plant factory, is installed in a living space for indoor greening, the carbon dioxide supplied to the plants is supplied from a high-pressure cylinder, etc., which increases the carbon dioxide concentration indoors. In such an indoor environment, people cannot stay indoors for long periods of time, making it difficult for the device and people to coexist, and making it difficult to increase the carbon dioxide concentration for indoor greening.

[0005] An object of one embodiment of the present invention is to provide a greening device that can use carbon dioxide to grow plants healthily in a living space with low illuminance, and to provide a greening device that can supply high-concentration carbon dioxide to plants without using an energy source such as an external power source. [Means for solving the problem]

[0006] A greening device according to one embodiment of the present invention includes a carbon dioxide concentration control device that emits carbon dioxide-containing gas having a higher carbon dioxide concentration than air drawn in from indoors, and a cultivation device that supplies the carbon dioxide-containing gas to plants. The cultivation device has a planting base in which plants are planted, and a reflector that is placed on the planting base and has through holes that allow the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device to pass through, and that reflects light. The carbon dioxide concentration control device has a dehumidification section that removes water vapor contained in the air, and a carbon dioxide supply section that emits the carbon dioxide-containing gas and is equipped with a carbon dioxide adsorption / release material containing an amine compound that can adsorb and release carbon dioxide. The carbon dioxide adsorption / release material adsorbs carbon dioxide in the air that has passed through the dehumidification section, and releases the carbon dioxide by being heated at a temperature higher than the temperature at which the carbon dioxide was adsorbed.

[0007] The carbon dioxide concentration control device may further include a turbulence section that agitates the carbon dioxide-containing gas discharged from the carbon dioxide supply section.

[0008] The carbon dioxide concentration control device further has a carbon dioxide storage unit that dissolves the carbon dioxide contained in the carbon dioxide-containing gas discharged from the carbon dioxide supply unit into water, and a mist generating unit that turns the water in which the carbon dioxide dissolved that is discharged from the carbon dioxide storage unit into mist, and the mist generating unit may emit carbon dioxide-containing gas with a humidity higher than the humidity of the carbon dioxide-containing gas discharged from the carbon dioxide supply unit.

[0009] The carbon dioxide supply unit may include an amine compound, a porous substrate having pores capable of supporting the amine compound, and a heat source for heating the porous substrate.

[0010] The carbon dioxide supply unit may include an amine compound, a tube having a surface coated with the amine compound, and a heat source for heating the tube.

[0011] The cultivation device may further include a fan that draws the carbon dioxide-containing gas into the cultivation device, and an air-permeable layer that is provided between the planting base and the reflector and that ventilates the carbon dioxide-containing gas.

[0012] The ventilation layer may further include a guide pipe for guiding the carbon dioxide-containing gas sucked by the fan to the through-holes.

[0013] The reflector may further have a ventilation section through which the carbon dioxide-containing gas supplied into the cultivation device can ventilate.

[0014] A fan for sucking carbon dioxide-containing gas into the cultivation device may be further provided between the carbon dioxide concentration control device and the cultivation device.

[0015] The reflector may further include an LED arranged near the through hole, a heat collecting portion provided below the LED, and a carbon dioxide adsorption / release material provided below the heat collecting portion and including an amine compound that adsorbs and releases carbon dioxide.

[0016] The concentration of carbon dioxide contained in the air sucked from the room is 350 ppm or more and less than 800 ppm, and the concentration of carbon dioxide contained in the carbon dioxide-containing gas is 800 ppm or more and 1500 ppm or less, and the carbon dioxide-containing gas may be released into the room as air after passing between the cultivation device and the plants being planted. [Effects of the Invention]

[0017] According to the greening device of one embodiment of the present invention, it is possible to supply highly concentrated carbon dioxide to plants in a living space with low illumination while maintaining a carbon dioxide concentration that allows coexistence with humans. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram showing the configuration of a greening device according to one embodiment of the present invention. [Figure 2] 1 is a schematic perspective view showing the configuration of a cultivation device of a greening apparatus according to an embodiment of the present invention. [Figure 3] 1 is a schematic diagram showing the configuration of a greening device according to one embodiment of the present invention. [Figure 4] 1 is a schematic diagram showing the configuration of a greening device according to one embodiment of the present invention. [Figure 5] 1 is a schematic perspective view showing the configuration of a cultivation device of a greening apparatus according to an embodiment of the present invention. [Figure 6] 1 is a schematic perspective view showing the configuration of a cultivation device of a greening apparatus according to an embodiment of the present invention. [Figure 7] 1 is a schematic perspective view showing the configuration of a cultivation device of a greening apparatus according to an embodiment of the present invention. [Figure 8] 1 is a schematic side view showing the configuration of a cultivation device of a greening apparatus according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, various embodiments of the present invention will be described with reference to the drawings, etc. However, the present invention can be embodied in various forms without departing from the spirit of the present invention, and should not be construed as being limited to the description of the embodiments exemplified below.

[0020] First Embodiment A greening device 10 according to one embodiment of the present invention will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a schematic diagram showing the configuration of the greening device according to one embodiment of the present invention. Fig. 2 is a schematic perspective view showing the configuration of a cultivation device of the greening device according to one embodiment of the present invention.

[0021] (Greening equipment) The greening device 10 is mainly installed in rooms where people live or where office work or other tasks are performed, and is used for indoor greening of these rooms. The greening device 10 is an open system that collects carbon dioxide from the indoor air to generate a carbon dioxide-containing gas. The carbon dioxide-containing gas is provided to plants 20 and then released into the room. The greening device 10 can be installed on a wall or floor. The greening device 10 includes a carbon dioxide concentration control device 100 and a cultivation device 200.

[0022] (Carbon dioxide concentration control device) The carbon dioxide concentration control device 100 draws in indoor air and collects the carbon dioxide contained in the drawn air. After collecting the carbon dioxide, the carbon dioxide concentration control device 100 discharges the collected carbon dioxide in a state suitable for plant growth. The carbon dioxide concentration control device 100 discharges a carbon dioxide-containing gas with a higher carbon dioxide concentration than the air drawn in from the room. The carbon dioxide concentration control device 100 collects carbon dioxide emitted mainly from people and electrical appliances present in the room, converts it into a carbon dioxide-containing gas with a higher carbon dioxide concentration than air, and discharges it. By discharging a carbon dioxide-containing gas with a higher carbon dioxide concentration than air, it is possible to promote the growth of plants planted in low-light indoor environments and maintain the health of the plants.

[0023] The carbon dioxide concentration of the air drawn in from the room is equal to or lower than the carbon dioxide concentration in a living room as defined in the Building Environmental Sanitation Management Standards, and is between 350 ppm and 800 ppm. The carbon dioxide concentration of the carbon dioxide-containing gas, which has a higher carbon dioxide concentration than the air drawn in from the room, is between 800 ppm and 1500 ppm, and preferably between 1000 ppm and 1500 ppm. By maintaining the carbon dioxide concentration of the carbon dioxide-containing gas at between 800 ppm and 1500 ppm, the growth of plants planted in low-illumination indoor environments can be promoted and the health of the plants can be maintained. The carbon dioxide concentration of the carbon dioxide-containing gas is measured using a carbon dioxide concentration meter or the like before being supplied to the cultivation device 200 and after all processing. For example, the carbon dioxide concentration meter is disposed between the turbulence section 110 (described later) and the cultivation device 200.

[0024] The carbon dioxide concentration control device 100 is connected in series to the cultivation device 200. The carbon dioxide concentration control device 100 is connected to the cultivation device 200 by a pipe 103-1 or the like that transports the carbon dioxide to be discharged. The carbon dioxide concentration control device 100 has a dehumidifying unit 102 and a carbon dioxide supplying unit 104.

[0025] (Dehumidification section) The dehumidifying unit 102 removes water vapor from the air drawn in from the room. The dehumidifying unit 102 sends the dry air from which the water vapor has been removed to the carbon dioxide supplying unit 104 directly or through piping 103-2. The dehumidifying unit 102 can be a compressor-type dehumidifier that cools the air using a cooler and dehumidifies the water vapor contained in the air by condensing it, or a desiccant rotor-type dehumidifier that dehumidifies the air by adsorbing the water vapor contained in the air. In this way, by removing the water vapor from the air using the dehumidifying unit 102 and sending the dried air to the carbon dioxide supplying unit 104, it is possible to prevent water vapor from coming into contact with the carbon dioxide adsorption and release material 106, which will be described later, and to suppress deterioration of the carbon dioxide adsorption and release material 106.

[0026] (Carbon dioxide supply unit) The carbon dioxide supplying unit 104 recovers carbon dioxide. After recovering the carbon dioxide, the carbon dioxide supplying unit 104 discharges a carbon dioxide-containing gas with a high carbon dioxide concentration. The carbon dioxide supplying unit 104 recovers carbon dioxide from the air that has passed through the dehumidifying unit 102 at a certain temperature, and releases the recovered carbon dioxide at a temperature higher than the temperature.

[0027] The carbon dioxide supplying unit 104 has a carbon dioxide adsorption / release material 106. The carbon dioxide supplying unit 104 has the carbon dioxide adsorption / release material 106 in a path through which the air from the dehumidifying unit 102 passes. The carbon dioxide adsorption / release material 106 can adsorb or release carbon dioxide depending on the temperature. Specifically, the carbon dioxide adsorption / release material 106 adsorbs carbon dioxide in the air and releases the carbon dioxide at a temperature higher than the temperature at which the carbon dioxide was adsorbed.

[0028] The carbon dioxide adsorption / release material 106 can adsorb or release carbon dioxide depending on the temperature using chemical absorption or chemical adsorption. Chemical absorption absorbs and separates CO2 from the atmosphere by passing air through a carbonate solution of calcium, sodium, potassium, or other salts or an amine compound solution, and then separates and captures the CO2 by heating. Chemical adsorption separates and captures CO2 by passing air through alkali metal salts, amine-supported porous materials, metal-organic frameworks (MOFs), or ion exchange resins. In the chemical absorption and chemical adsorption methods, the carbon dioxide adsorption / release material 106 can adsorb and release carbon dioxide by including an amine compound.

[0029] The carbon dioxide supply unit 104 has at least one of a porous material 106A and a pipe 106B, and can contain an amine compound by supporting or applying an amine compound to at least one of the porous material 106A and the pipe 106B.

[0030] When the carbon dioxide supply unit 104 includes a porous material 106A, the amine compound is supported in the pores of the porous material 106A. By providing the porous material 106A supporting the amine compound in the path through which air from the dehumidifier 102 passes, the carbon dioxide supply unit 104 can efficiently capture and release carbon dioxide contained in the air after the capture. The porous material 106A can be made of a material having multiple pores. For example, polyolefin, zeolite, silica, or the like can be used as the material having multiple pores. Methods for supporting the amine compound in the pores of the porous material 106A include, for example, dispersing the amine compound in the porous material 106A, dissolving or dispersing the amine compound in a solvent or the like and applying the substrate to the porous material 106A, or dissolving or dispersing the amine compound in a solvent or the like and impregnating the porous material 106A with the dispersion. However, the porous material and the method for supporting the amine compound in the porous material are not limited to those described above.

[0031] When the carbon dioxide supply unit 104 has a pipe 106B, an amine compound is applied to the pipe 106B. The carbon dioxide supply unit 104 can efficiently collect and release carbon dioxide contained in the air by passing air from the dehumidification unit 102 through the pipe 106B to which the amine compound is applied. As a method for applying the amine compound to the pipe 106B, as described above, there is a method in which the amine compound is dissolved or dispersed in a solvent or the like and the base material is applied to the pipe 106B. However, the method for applying the amine compound to the pipe 106B is not limited to the above.

[0032] The amine compound is a compound capable of adsorbing and desorbing carbon dioxide. The amine compound used in this embodiment may be a known amine compound that adsorbs and desorbs carbon dioxide, such as compound (1) described in International Publication No. 2022 / 085789. Alternatively, instead of an amine compound, a known porous metal-organic framework that adsorbs and desorbs carbon dioxide may be used, such as the porous metal-organic framework described in JP-A-2023-158570. Note that the amine compound or porous metal-organic framework may adsorb carbon dioxide at low temperatures instead of carbon dioxide.

[0033] The solvent for dissolving the amine compound may be a solvent for dissolving the compound (1) described in International Publication No. 2022 / 085789. The substrate may be a resin capable of dispersing and retaining the amine compound. For example, the resin may be a polyolefin.

[0034] As described above, amine compounds adsorb carbon dioxide depending on the temperature, and release the adsorbed carbon dioxide afterwards. Amine compounds adsorb carbon dioxide at low temperatures. Amine compounds adsorb carbon dioxide and then release carbon dioxide at high temperatures. For example, an amine compound adsorbs carbon dioxide when the room temperature is low during the hours of the day when no one is in the room, and releases carbon dioxide when the room temperature is high during the hours when someone is in the room. Note that low and high temperatures may be determined according to the physical properties of the amine compound described above, and high temperatures refer to temperatures higher than the temperature at which carbon dioxide is adsorbed (low temperatures), and may be achieved by heating the amine compound without relying on room temperature. Note that there are cases where an amine compound can be evaluated as absorbing carbon dioxide (when carbon dioxide is absorbed rather than adsorbed).

[0035] The amine compound can be heated by heating porous material 106A supporting the amine compound or pipe 106B coated with the amine compound. Porous material 106A and pipe 106B can be heated by providing heat source 108 in carbon dioxide supply unit 104.

[0036] The heat source 108 is provided so as to cover at least a portion of the porous material 106A and the pipe 106B. The heat source 108 is provided so as to be in thermal contact with the porous material 106A and the pipe 106B. The heat source 108 is provided in direct contact with the porous material 106A and the pipe 106B, or a heat conductive member or the like is provided between the porous material 106A and the pipe 106B, and the heat source 108 is provided so as to cover at least a portion of the porous material 106A and the pipe 106B via the heat conductive member or the like. The heat source 108 utilizes exhaust heat, and can utilize, for example, exhaust heat from a factory or exhaust heat from an air conditioner or chilled water generator already installed in a room.

[0037] As described above, the carbon dioxide supply unit 104 can discharge a carbon dioxide-containing gas having a higher carbon dioxide concentration than the air drawn in from the room.

[0038] Instead of chemical absorption or chemical adsorption, carbon dioxide absorption and desorption can also be achieved using membrane separation, cryogenic separation, or electrochemical methods. Membrane separation can separate and capture carbon dioxide from air by using thin films such as polymer membranes or ionic liquid membranes to determine the difference in permeation rate, driven by a pressure difference. Cryogenic separation can separate and capture carbon dioxide by cooling air to the freezing point of oxygen, turning the carbon dioxide into dry ice. Electrochemical methods can separate and capture carbon dioxide using electrochemical techniques such as electrodes.

[0039] (Cultivation equipment) The cultivation device 200 is a device for planting and growing plants 20. The cultivation device 200 is a place where carbon dioxide-containing gas having a higher carbon dioxide concentration than the air drawn from the room through the carbon dioxide supply unit 104 is supplied to the plants 20. The cultivation device 200 is an open system, and releases the carbon dioxide-containing gas that has passed between the plants 20 into the room. The cultivation device 200 has a planting base 202 and a reflecting plate 204. The cultivation device 200 has an air-permeable layer 206 between the planting base 202 and the reflecting plate 204.

[0040] The planting base 202 is a layer in which the plants 20 are planted and in which a planting base material such as culture soil is placed so that the plants can grow. The planting base 202 can be, for example, soil, a vegetation sheet, a vegetation mat, or the like, which allows the roots of the plants 20 to grow.

[0041] The reflector 204 is a plate that reflects light and irradiates the plants 20 with the reflected light. The reflector 204 is provided on the planting base 202. The reflector 204 has a mirrored surface on the surface facing the leaves of the plants 20. Alternatively, the shape of the reflector 204 may be sawtooth, wavy, curved, or the like in cross section. Alternatively, the reflector 204 may be made of a diffusely reflecting material or a material that converts the wavelength of light irradiated onto the reflector 204. Examples of the diffusely reflecting material include mirrors, metal materials such as aluminum and stainless steel, materials coated with reflective paint, glass beads, and prisms. Examples of the material that changes the wavelength of light include wavelength conversion film and plastic with added fluorescent agents. The above-described shape or material of the reflector 204 may be applied to the surface of the reflector 204 facing the plants 20. By using the reflector 204 in at least the shape and made of the material described above, the light transmission to the plant 20 can be improved, and the growth of the plant 20 can be promoted or the plant 20 can be maintained in a healthy state.

[0042] The reflector 204 has at least one through-hole 208. The at least one through-hole 208 includes a plurality of through-holes 208. The number of through-holes 208 provided on the reflector 204 is equal to or greater than the number of plants 20 to be planted. The through-holes 208 are holes that allow the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100 to pass through (dotted arrows in FIG. 2). The stems or trunks of the plants 20 planted in the planting base 202 can pass through the through-holes 208, allowing the leaves of the plants 20 to be exposed above the reflector 204. The through-holes 208 allow the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100 to pass through, thereby supplying the carbon dioxide-containing gas to the leaves of the plants 20 on the reflector 204. The carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100 passes through the ventilation layer 206 before passing through the through-hole 208, as shown by the arrows in FIG. 2. The gaps between the through-holes 208 and the plants 20 may be blocked with a filler. The filler may be made of the material used for the guide tube 220 described below.

[0043] The ventilation layer 206 is provided between the planting base 202 and the reflector 204. The ventilation layer 206 is a space for ventilating the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100. The carbon dioxide-containing gas is supplied to the ventilation layer 206 by a fan 210 connected to the carbon dioxide concentration control device 100.

[0044] The ventilation layer 206 can be integrated with the reflector 204. For example, if the reflector 204 is a laminated sheet, and the first sheet facing the plants has a sawtooth, wavy, curved, or other shape in cross section, and the second sheet laminated with the first sheet is flat, the first sheet and the second sheet form a cylindrical ventilation layer, and the ventilation layer 206 can be integrated with the reflector 204. A truss structure, rigid frame structure, honeycomb structure, or other structure may be present between the first sheet and the second sheet to connect them. The same applies when the shapes of the first sheet and the second sheet are reversed. In this case, the surface of the first sheet facing the plants is a mirror finish.

[0045] The cultivation device 200 has at least one fan 210. A plurality of fans 210 are provided in the cultivation device 200. The fan 210 is disposed between the carbon dioxide concentration control device 100 and the cultivation device 200. The fan 210 is disposed on the side of the cultivation device 200 where the carbon dioxide concentration control device 100 is disposed. The fan 210 is disposed so as to be approximately perpendicular to the planting base 202 and the reflector 204. The fan 210 draws the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100 into the cultivation device 200. The drawn carbon dioxide-containing gas passes through the fan 210 and the ventilation layer 206 as described above. The fan 210 can be, for example, a mechanism that blows air using rotating blades, such as a propeller fan, a sirocco fan, or a turbofan, or a mechanism that generates an air current that draws in surrounding air by discharging blown air from an air outlet, such as a bladeless circulator. However, the fan 210 is not limited to the one described above as long as it can suck in the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100 into the cultivation device.

[0046] As described above, the greening device 10 includes the carbon dioxide concentration control device 100 that discharges carbon dioxide-containing gas having a higher carbon dioxide concentration than the air drawn in from the room, and the cultivation device 200 that supplies the carbon dioxide-containing gas to the plants. The carbon dioxide-containing gas passes between the cultivation device 200 and the plants 20 to be cultivated, and is then released into the room as air similar to the air drawn in from the room. This allows plants to be provided with a high concentration of carbon dioxide-containing gas without changing the total amount of carbon dioxide in the room. Furthermore, by not changing the total amount of carbon dioxide in the room, the greening device 10 that promotes plant growth can be installed in a living space. Furthermore, carbon dioxide can be used to grow plants 20 healthily in a living space with low illuminance.

[0047] In the greening device 10, the carbon dioxide concentration control device 100 includes the carbon dioxide adsorption / release material 106, so that highly concentrated carbon dioxide can be supplied to the plants 20 without using an energy source such as an external power supply.

[0048] Second Embodiment A description will be given of a second embodiment of the carbon dioxide concentration control device 100. FIG.

[0049] The carbon dioxide concentration control device 100 has a turbulent flow section 110. The turbulent flow section 110 is arranged between the carbon dioxide supply section 104 and the cultivation device 200. The turbulent flow section 110 is connected to the carbon dioxide supply section 104. The turbulent flow section 110 is connected to the carbon dioxide supply section 104 via a fluid transport member such as piping 103-3. The turbulent flow section 110 is connected to the cultivation device 200 via piping 103-1. The turbulent flow section 110 is a mechanism that generates turbulent airflow. The turbulent flow section 110 is a piping that generates turbulence. The turbulent flow section 110 mixes and agitates the carbon dioxide-containing gas discharged from the carbon dioxide supply section 104 with air.

[0050] As described above, by providing the carbon dioxide concentration control device 100 with the turbulence section 110, the carbon dioxide-containing gas can be adjusted to a carbon dioxide concentration appropriate for the plants 20.

[0051] Third Embodiment A carbon dioxide concentration control device 100 according to the third embodiment will be described below. Fig. 4 is a diagram showing the configuration of a greening device according to this embodiment.

[0052] The carbon dioxide concentration control device 100 according to this embodiment has a carbon dioxide storage unit 112 and a mist generation unit 114. The carbon dioxide storage unit 112 is disposed between the carbon dioxide supply unit 104 and the mist generation unit 114. The mist generation unit 114 is disposed between the carbon dioxide storage unit 112 and the cultivation device 200. The carbon dioxide storage unit 112 is connected to the carbon dioxide supply unit 104 and the mist generation unit 114 via a pipe 103-4 or the like. The mist generation unit 114 is connected to the carbon dioxide storage unit 112 and the cultivation device 200 via a pipe 103-5 and a pipe 103-1 or the like, respectively. When the turbulence unit 110 is provided in the carbon dioxide concentration control device 100, the turbulence unit 110 is disposed between the mist generation unit 114 and the cultivation device 200. Furthermore, when air mixing, which will be described later, is performed after the mist generation unit 114, the turbulence unit 110 is disposed after the air mixing.

[0053] The carbon dioxide storage unit 112 dissolves the carbon dioxide contained in the carbon dioxide-containing gas discharged from the carbon dioxide supply unit 104 into water. The carbon dioxide storage unit 112 generates nanobubbles in water using the carbon dioxide-containing gas, dissolving the carbon dioxide from the carbon dioxide-containing gas into water. By generating nanobubbles in water using the carbon dioxide-containing gas, the carbon dioxide dissolves efficiently in water and can be temporarily stored in the water. By temporarily storing carbon dioxide in the carbon dioxide storage unit 112, the stored carbon dioxide is gradually used or discharged from the carbon dioxide storage unit 112. This allows carbon dioxide to be steadily supplied to the cultivation device 200.

[0054] The mist generating unit 114 humidifies the dried carbon dioxide-containing gas. The mist generating unit 114 dissolves the carbon dioxide discharged from the carbon dioxide storage unit 112 in water and concentrates the carbon dioxide in the water. The carbon dioxide concentrated in the water is atomized (misted). Mist can be generated by a spray nozzle method, an ultrasonic method, a steam method, an evaporation method, a method of releasing evaporated water by applying hot air, a decompression method, or the like. In this way, the dried carbon dioxide-containing gas is humidified. By humidifying the dried carbon dioxide-containing gas, it is possible to prevent the dried carbon dioxide-containing gas from being supplied to the plants 20.

[0055] The carbon dioxide-containing gas discharged from the mist generating unit 114 may be mixed with air to achieve an appropriate humidity and carbon dioxide concentration. Because the appropriate humidity varies depending on the type of plant 20, the humidity is set appropriately depending on the type of plant 20, and the carbon dioxide-containing gas and air are mixed to achieve the set humidity. If the carbon dioxide-containing gas discharged from the mist generating unit 114 is too high and not an appropriate concentration for the plant 20, the carbon dioxide-containing gas and air are mixed to achieve the set carbon dioxide concentration. As a method for mixing the carbon dioxide-containing gas and air, for example, as shown in FIG. 4, a path for introducing air is installed between the mist generating unit 114 and the cultivation device 200, and the air flow rate is adjusted using mass flow or the like, and the humidified carbon dioxide-containing gas is mixed with the air.

[0056] As described above, by providing the carbon dioxide concentration control device 100 with the carbon dioxide storage unit 112 and the mist generation unit 114, it is possible to stably supply carbon dioxide-containing gas at an appropriate humidity to the plants 20.

[0057] <Fourth embodiment> A fourth embodiment of the cultivation device 200 will be described with reference to Fig. 5. Fig. 5 is a schematic perspective view showing the configuration of the cultivation device of the greening apparatus in the fourth embodiment of the present invention.

[0058] The cultivation apparatus 200 has an induction pipe 220. The induction pipe 220 is a pipe that guides the carbon dioxide-containing gas sucked from the fan 210 to the through-holes 208 (see FIG. 1). The induction pipe 220 is arranged in the ventilation layer 206. The induction pipe 220 is connected to the fan 210. The induction pipe 220 is connected to the fan 210 via a joint or the like. When a plurality of through-holes 208 are provided, the induction pipe 220 has side-flow induction pipes 220B that branch off from a main induction pipe 220A connected to the fan 210 and guide the gas to each of the plurality of through-holes 208. The branched induction pipes 220B have holes 212 that overlap the through-holes 208. The induction pipe 220 can be made of, for example, polyvinyl chloride, vinyl, stone, ceramic, special synthetic rubber, glass, or film.

[0059] As described above, by providing the guide pipes 220 that guide the carbon dioxide-containing gas sucked into the cultivation device 200 to the through-holes 208, it is possible to uniformly provide the carbon dioxide-containing gas to all the plants 20 in the cultivation device 200. Furthermore, by sending the sucked carbon dioxide-containing gas directly to the through-holes 208 by the guide pipes 220, it is possible to reduce the capacity of the fan 210, and it is possible to reduce the operating costs of the greening device 10.

[0060] Referring again to FIG. 5, the cultivation apparatus 200 according to the fifth embodiment will be described.

[0061] The cultivation apparatus 200 has a drying prevention sheet 214. The drying prevention sheet 214 is placed on the planting base 202. The drying prevention sheet 214 covers the planting base 202. The drying prevention sheet 214 prevents the moisture contained in the planting base 202 from coming into contact with the carbon dioxide-containing gas sucked in by the fan 210, thereby suppressing the adsorption of carbon dioxide by the moisture in the planting base 202. The drying prevention sheet 214 prevents the wind generated by the fan 210 from hitting the planting base 202, preventing the moisture contained in the planting base 202 from drying out. The drying prevention sheet 214 can be made of, for example, nonwoven fabric, mulch sheet, weed control sheet, straw, cotton, chemical fiber, wood chips, plastic, metal, resin, urethane, bentonite sheet, PVC sheet, rubber sheet, TPE sheet, adhesive spray material, etc.

[0062] As described above, by providing the drying prevention sheet 214 in the cultivation device 200, the carbon dioxide-containing gas can be efficiently brought into contact with the plants 20, and the plants 20 can be grown.

[0063] Fifth Embodiment 6, which is a schematic perspective view showing a configuration of a part of the cultivation device of the greening device according to one embodiment of the present invention, and explains a fifth modified example of the reflecting plate 204. FIG.

[0064] The reflector 204 has ventilation holes 216. The ventilation holes 216 are holes that discharge carbon dioxide-containing gas supplied from the carbon dioxide concentration control device 100 that vents the ventilation layer 206 to the vicinity of the underside of the plant leaves (dotted arrows in FIG. 6 ). The ventilation holes 216 are arranged around the through-holes 208. The ventilation holes 216 are arranged below the leaves of the plant 20. The ventilation holes 216 include multiple ventilation holes 216, and the multiple ventilation holes 216 are arranged to surround the through-hole 208. Multiple ventilation holes 216 are arranged for one through-hole 208. The diameter of the ventilation holes 216 is smaller than the diameter of the through-hole 208.

[0065] As described above, by providing the ventilation holes 216 around the through-holes 208 of the reflector plate 204, the carbon dioxide-containing gas can be brought into contact with the plants 20 efficiently.

[0066] Sixth Embodiment FIG. 7 is a schematic perspective view for explaining the configuration of the cultivation device of the greening device according to this embodiment. The greening device according to this embodiment has the same configuration as that of the first embodiment, but differs in the configuration of the reflector 204. FIG. 7 shows a partial configuration of the greening device to explain the configuration of the reflector 204. FIG. 8 shows a schematic cross-sectional view corresponding to the configuration shown in FIG. 7. In the following explanation, the differences from the first embodiment will be mainly explained, and explanations of common parts will be omitted as appropriate.

[0067] The reflector 204 has an LED (Light Emitting Diode) 218, a heat collector 222, and the carbon dioxide adsorption / release material 106. The LED 218 illuminates the plant 20 and the room, and can further heat the carbon dioxide adsorption / release material 106 with its exhaust heat. The LED 218 is arranged near the through-hole 208. The LED 218 is arranged at a position far enough away that the exhaust heat is transferred to the plant 20 when the LED 218 is turned on. The LED 218 is arranged below the leaves of the plant 20. The LED 218 is arranged so as to illuminate the leaves of the plant 20. The LED 218 is arranged facing the leaves of the plant 20. The LED 218 is arranged above the heat collector 222. The light emitted by the LED 218 can increase the rate of photosynthesis in the plant 20.

[0068] The heat collecting portion 222 can collect exhaust heat from the LEDs 218 and transfer the heat to the carbon dioxide adsorption and release material 106. The heat collecting portion 222 is provided below the LEDs 218. The heat collecting portion 222 is provided in contact with the LEDs 218. The heat collecting portion 222 is disposed on top of the carbon dioxide adsorption and release material 106.

[0069] The carbon dioxide adsorption and release material 106 is heated by exhaust heat when the LED 218 is turned on and releases carbon dioxide, and can adsorb carbon dioxide when the LED 218 is turned off. The carbon dioxide adsorption and release material 106 mainly releases carbon dioxide to the ventilation layer 206. The carbon dioxide adsorption and release material 106 may be heated by the heat source 108 described above. The carbon dioxide adsorption and release material 106 is provided below the heat collection section 222. The carbon dioxide adsorption and release material 106 is provided in contact with the heat collection section 222. The carbon dioxide adsorption and release material 106 is disposed facing the ventilation layer 206. As a result, the carbon dioxide released from the carbon dioxide adsorption and release material 106 passes through the ventilation layer 206 by the air blown by the fan 210, passes through the through-holes 208 or the ventilation holes 216, and comes into contact with the plants 20.

[0070] As explained above, by providing the reflector 204 with the LEDs 218, the heat collecting section 222 below the LEDs 218, and the carbon dioxide absorbing and releasing material 106 below the heat collecting section 222, a synergistic effect can be obtained between the light emitted by the LEDs 218 and the carbon dioxide in the carbon dioxide absorbing and releasing material 106, and the energy required for the growth of the plants 20 can be efficiently produced by photosynthesis. By reducing the energy required for cultivating the plants 20, a highly energy-efficient greening device 10 can be provided.

[0071] The above-described embodiments of the present invention may be used interchangeably as appropriate, provided that they are not mutually inconsistent. Based on each embodiment, a person skilled in the art may add components as appropriate. Any additions, deletions, or design changes made to a product are within the scope of the present invention as long as they maintain the essence of the present invention. is included in the bracket. [Explanation of symbols]

[0072] 10: greening device, 20: plants, 100: carbon dioxide concentration control device, 102: dehumidification section, 104: carbon dioxide supply section, 106: carbon dioxide adsorption / release material, 106A: porous material, 106B: pipe, 108: heat source, 110: turbulence section, 112: carbon dioxide storage section, 114: mist generation section, 200: cultivation device, 202: planting base, 204: reflector, 206: ventilation layer, 208: through-hole, 210: fan, 212: hole, 214: anti-drying sheet, 216: ventilation hole, 218: LED, 220: induction tube, 222: heat collection section

Claims

1. a carbon dioxide concentration control device that discharges a carbon dioxide-containing gas having a higher carbon dioxide concentration than the air drawn in from the room; a cultivation device that supplies the carbon dioxide-containing gas to plants, The cultivation device is a planting base on which the plant is planted; A reflector plate that is provided on the planting base, has a through hole that allows the carbon dioxide-containing gas supplied from the carbon dioxide concentration control device to pass through, and reflects light; and The carbon dioxide concentration control device comprises: a dehumidifying unit that removes water vapor contained in the air; a carbon dioxide supply unit that includes a carbon dioxide adsorption / release material containing an amine compound capable of adsorbing and releasing carbon dioxide and that discharges the carbon dioxide-containing gas; The carbon dioxide adsorption / release material adsorbs carbon dioxide in the air that has passed through the dehumidification section, and releases the carbon dioxide when heated at a temperature higher than the temperature at which the carbon dioxide was adsorbed.

2. The carbon dioxide concentration control device comprises: The greening device according to claim 1 , further comprising a turbulence section for agitating the carbon dioxide-containing gas discharged from the carbon dioxide supply section.

3. The carbon dioxide concentration control device comprises: a carbon dioxide storage unit that dissolves the carbon dioxide contained in the carbon dioxide-containing gas discharged from the carbon dioxide supply unit into water; a mist generating unit that generates mist from the water in which the carbon dioxide is dissolved and that is discharged from the carbon dioxide storage unit, 2. The greening device according to claim 1, wherein the mist generating unit emits carbon dioxide-containing gas having a humidity higher than that of the carbon dioxide-containing gas discharged from the carbon dioxide supplying unit.

4. The carbon dioxide supply unit includes the amine compound, a porous substrate having pores capable of supporting the amine compound, and The greening device according to claim 1 , further comprising: a heat source for heating the porous substrate.

5. The carbon dioxide supply unit includes the amine compound, a pipe having a surface coated with the amine compound, and The greening device according to claim 1 , further comprising: a heat source for heating the tube.

6. The cultivation device includes a fan that draws the carbon dioxide-containing gas into the cultivation device; The greening device according to claim 1 , further comprising: a ventilation layer provided between the planting base and the reflecting plate, for allowing the carbon dioxide-containing gas to circulate.

7. The greening device according to claim 6, further comprising a guide pipe in the ventilation layer for guiding the carbon dioxide-containing gas sucked from the fan to the through-holes.

8. 2. The greening device according to claim 1, wherein the reflector further comprises a ventilation portion through which the carbon dioxide-containing gas supplied into the cultivation device can be ventilated.

9. The greening device according to claim 1, further comprising a fan between the carbon dioxide concentration control device and the cultivation device for sucking the carbon dioxide-containing gas into the cultivation device.

10. The reflector is an LED disposed near the through hole; a heat collecting portion provided below the LED; 2. The greening device according to claim 1, further comprising a carbon dioxide adsorption / release material provided below the heat collecting portion and containing an amine compound that adsorbs and releases carbon dioxide.

11. The concentration of carbon dioxide contained in the air sucked from the room is equal to or greater than 350 ppm and less than 800 ppm, The concentration of carbon dioxide contained in the carbon dioxide-containing gas is 800 ppm or more and 1500 ppm or less, 2. The greening device according to claim 1, wherein the carbon dioxide-containing gas passes between the cultivation device and the plants to be planted, and is then released into the room as the air.

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