WO2019208279A1 - 栽培装置 - Google Patents
栽培装置 Download PDFInfo
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- WO2019208279A1 WO2019208279A1 PCT/JP2019/016040 JP2019016040W WO2019208279A1 WO 2019208279 A1 WO2019208279 A1 WO 2019208279A1 JP 2019016040 W JP2019016040 W JP 2019016040W WO 2019208279 A1 WO2019208279 A1 WO 2019208279A1
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- cultivation
- chamber
- nutrient solution
- air
- room
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
- A01G31/06—Hydroponic culture on racks or in stacked containers
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
- A01G31/04—Hydroponic culture on conveyors
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/249—Lighting means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Definitions
- the present invention relates to a cultivation apparatus used in an artificial light type plant factory.
- Plant factories are attracting attention as a solution to problems such as food shortages due to global population growth and crop production decline due to a decline in rural population due to aging in developed countries such as Japan.
- Plant factories are broadly divided into two types: fully artificial light type and sunlight utilization type.
- the fully artificial light type is cultivated using only artificial light sources without using sunlight in a closed environment
- the solar-powered type is based on the use of sunlight in an environment close to a greenhouse and supplemented with artificial light. It is cultivated using high temperature control technology in summer.
- JP 2002-291349 A Japanese Unexamined Patent Publication No. 2005-21065
- the temperature difference between the cultivation shelf installed in the vicinity of the air conditioning apparatus and the cultivation shelf installed far away is actually And humidity difference.
- a temperature difference and a humidity difference similarly arise in the up-down direction of the cultivation shelf.
- the temperature of the nutrient solution increases due to exhaust heat during the lighting period of the artificial light source, and gradually during the extinguishing period. It will not be constant.
- an object of the present invention is to keep the cultivation environment depending on the place and time almost constant in the plant factory.
- the present invention is a cultivation apparatus used in an artificial light type plant factory, and a plurality of cultivation chambers formed by partitioning the cultivation room in the vertical direction at a predetermined interval, wherein the cultivation room can be sealed inside
- An air circulation device that supplies air adjusted to a predetermined condition to each of the plurality of cultivation chambers at a predetermined flow rate, collects and circulates the supplied air from the plurality of cultivation chambers, and a predetermined condition
- It is related with a cultivation apparatus provided with the nutrient solution circulation device which supplies the nutrient solution adjusted to the above to each of a plurality of cultivation chambers at a predetermined flow rate, and collects and circulates the supplied nutrient solution from the cultivation chamber.
- the nutrient solution adjusted to the predetermined condition is supplied to each of the plurality of cultivation chambers at a flow rate with a changeable set value.
- the flow direction of the nutrient solution respectively supplied to the cultivation chamber by the air circulation device and the nutrient solution circulation device is along the short direction of the cultivation chamber.
- the flow direction of the air respectively supplied to the cultivation chamber by the air circulation device and the nutrient solution circulation device is along the short direction of the cultivation chamber.
- the flow direction of the air respectively supplied to the cultivation chamber by the air circulation device and the nutrient solution circulation device is from above to below the cultivation chamber.
- the cultivation chamber has a plurality of rectangular cultivation plates, It is preferable that the plurality of cultivation plates are arranged in the cultivation chamber such that the short side direction is along the longitudinal direction of the cultivation chamber.
- the said cultivation chamber is equipped with the nutrient solution tray for pouring a nutrient solution
- the said nutrient solution tray is comprised by the rectangular tray which can arrange
- the plurality of rectangular trays are preferably arranged in the cultivation chamber such that the short side direction is along the longitudinal direction of the cultivation chamber.
- the nutrient solution tray has an inclined surface that is inclined at a predetermined angle with respect to the short direction of the cultivation chamber so that the downstream side of the nutrient solution flow is downward.
- the cultivation chamber is configured by a box-shaped member, and has a chamber opening for taking in and out the cultivation plate on one end side in the longitudinal direction, and a chamber lid that can open and close the chamber opening. It is preferable to close the cultivation chamber by closing the chamber opening with the chamber lid.
- it further comprises a transport mechanism for transporting the cultivation plate, the transport mechanism is provided in the cultivation chamber, and a transport machine for transporting the cultivation plate in the longitudinal direction of the cultivation chamber, It is preferable to have an elevator that is provided adjacent to the side of the cultivation chamber on which the chamber opening is provided, and that moves the cultivation plate in and out of the chamber opening and transports it in the vertical direction.
- the said elevator is provided in the said cultivation room
- the said cultivation room is a cultivation room opening part for taking in and out the said cultivation plate in the one end side in which the said elevator was provided among the longitudinal directions, and this cultivation room It is preferable to have a cultivation room lid that can open and close the opening.
- the nutrient solution tray that is arranged in the cultivation chamber and for pouring the nutrient solution is composed of a rectangular tray that is substantially the same size as the cultivation plate and on which the cultivation plate can be arranged. It is preferable to convey the cultivation plate and the rectangular tray in a state where the cultivation plate is arranged on the rectangular tray.
- the present invention since air is supplied to each of a plurality of cultivation chambers arranged in the vertical direction in a closed cultivation room, a uniform cultivation environment can be provided regardless of the place in the cultivation room, Since the air and nutrient solution adjusted to the predetermined conditions are always supplied to the cultivation chamber in the cultivation room and collected in a short time, the environment in the cultivation room can be kept almost constant.
- the cultivation apparatus of the present invention is used in an artificial light type plant factory, and is suitably used in a plant factory with a large production scale, which has conventionally been difficult to manage the cultivation environment.
- FIG. 1 is a functional block diagram showing the configuration of the cultivation apparatus 1A of the present invention.
- the cultivation device 1A includes a cultivation room 10A, a plurality of cultivation chambers 20A, an air circulation device 30, a nutrient solution circulation device 40, an operation unit 50, a control unit 60, and a display unit 70.
- the cultivation room 10 ⁇ / b> A has a rectangular parallelepiped outer wall that can be hermetically sealed, and is a cultivation environment independent of the environment (temperature and humidity) of the work room of the plant factory where the cultivation apparatus 1 ⁇ / b> A is arranged. Can be maintained.
- a material of the outer wall it is preferable to use a heat insulating material so that it is not easily affected by the environment of the working room that is outside the cultivation room 10A.
- 1 A of cultivation apparatuses of the state which removed the outer wall of 10 A of cultivation rooms are shown.
- FIG. 4 shows a schematic cross-sectional view of the cultivation room 10 of the present invention as viewed from the longitudinal direction.
- the plurality of cultivation chambers 20 ⁇ / b> A are formed by dividing the cultivation room 10 ⁇ / b> A by a shelf plate 111 at a predetermined interval in the vertical direction, and each has a substantially rectangular parallelepiped shape.
- the plurality of cultivation chambers 20A can be configured by providing an exterior to a conventionally known multi-stage cultivation shelf.
- the five-stage cultivation shelf 100 is provided with an exterior (outer wall of the cultivation room 10A).
- each cultivation chamber 20A a plurality of nutrient solution trays 210 and cultivation plates 220 as shown in FIG. 5A are arranged so that their short direction is along the longitudinal direction of the cultivation chamber 20A as shown in FIG. 5B. Is done.
- the nutrient solution tray 210 is substantially the same size as the rectangular cultivation plate 220 and is configured by a rectangular tray that can be arranged to fit the cultivation plate 220. In the present embodiment, 16 pieces are arranged in each cultivation chamber 20A in a state where the cultivation plate 220 is fitted in the nutrient solution tray 210 of about 30 cm ⁇ 120 cm (see FIG. 5B).
- the length in the longitudinal direction may be a long shape that is at least twice the length in the short direction. preferable.
- the size of the cultivation chamber 20A (the number of cultivation plates 220 arranged in the cultivation chamber 20A) is not limited to the size of the above-described embodiment.
- the nutrient solution tray 210 and the cultivation plate 220 are rectangular in this embodiment, it is not restricted to this, A square may be sufficient. In the case of a square, one side of the square cultivation plate 220 is arranged along the longitudinal direction of the cultivation chamber 20A.
- each of the plurality of cultivation chambers 20 is in a sealed or semi-sealed state.
- the nutrient solution tray 210 is formed with a discharge port 211 (see FIG. 4) for discharging the supplied nutrient solution on one end side in the longitudinal direction (downstream side of the nutrient solution flow).
- the nutrient solution tray 210 includes an inclined surface that is inclined at a predetermined angle (for example, about 1 degree) in the short direction of the cultivation chamber 20A so that the downstream side of the flow of the nutrient solution is downward.
- a nutrient solution recovery pipe 470 which will be described later, is disposed below the discharge port 211 (see FIG. 4).
- the nutrient solution tray 210 may not be a size corresponding to one cultivation plate 220, and may be configured such that a plurality of cultivation plates 220 can be arranged in one nutrient solution tray 210. .
- an artificial light source 230 is disposed above each cultivation chamber 20 ⁇ / b> A, and a dimmer 231 that performs dimming of the artificial light source 230 is connected thereto.
- two artificial light sources 230 are arranged along the longitudinal direction of the nutrient solution tray 210 and the cultivation plate 220 (short direction of the cultivation chamber 20A).
- an LED that consumes less power and can be configured to be thin is preferably used.
- the air circulation device 30 is disposed adjacent to the cultivation shelf 100 on one end side in the longitudinal direction of the cultivation room 10, and air adjusted to a predetermined condition at a predetermined flow rate. It supplies to each cultivation chamber 20A, collect
- the air circulation device 30 only needs to have a function of adjusting at least the temperature, humidity, carbon dioxide concentration, and air flow rate (flow rate).
- the air circulation device 30 includes an air sterilization device 310, a direct expansion type air heating device 320 having a heating, cooling and dehumidifying function (a method of directly cooling air with a refrigerant), and a humidifying device having a humidifying function. 330, a carbon dioxide supply device 340 that adjusts the carbon dioxide concentration, a suction pump 350, and a compression pump 360.
- a chiller device of an inflating method (a method of cooling air through water with a refrigerant) may be used.
- Each cultivation chamber 20A and the air circulation device 30 are connected through an air recovery pipe 370A and an air supply pipe 380.
- the air recovery pipe 370 ⁇ / b> A and the air supply pipe 380 extend in the longitudinal direction of the cultivation chamber 20.
- a plurality of air recovery ports 371 provided at predetermined intervals are formed in the air recovery pipe 370A.
- the air supply pipe 380 is formed with a plurality of air supply ports 381 provided at predetermined intervals, and these air supply ports 381 are provided with constant flow valves (not shown).
- a temperature sensor, a humidity sensor, and a carbon dioxide concentration sensor are attached to predetermined locations of each cultivation chamber 20A, and the temperature, humidity, and carbon dioxide concentration of the circulating air are monitored.
- the air recovered from each cultivation chamber 20A by the suction pump 350 via the air recovery pipe 370A is sterilized via the air sterilizer 310 and sent to the air conditioner 320.
- the air conditioner 320 temperature adjustment and dehumidification are performed according to the measurement results of the temperature sensor and the humidity sensor, and then the humidifier 330 performs humidification.
- the carbon dioxide supply device 340 supplies carbon dioxide from a carbon dioxide supply source 341 such as a carbon dioxide cylinder according to the measurement result of the carbon dioxide concentration sensor.
- the air adjusted to a predetermined condition and a predetermined flow velocity is supplied to each cultivation chamber 20A through the air supply pipe 380 by the compression pump 360.
- the set value of the air flow rate may be fixed or changeable.
- the flow direction of the air in the cultivation chamber 20A is along the transversal direction of the cultivation chamber 20A.
- recovery can be shortened compared with the case where the flow direction of air is supplied so that the longitudinal direction of cultivation chamber 20A may be followed. Therefore, changes in the cultivation environment such as temperature, humidity, and carbon dioxide concentration that occur on the upstream side and downstream side of the air flow can be reduced.
- the flow direction of the air in the cultivation chamber 20A may be along the downward direction from the upper direction of the cultivation chamber 20A.
- one cultivation device 1A includes one cultivation room 10A, one cultivation room 10A includes a plurality of cultivation chambers 20A and one air circulation device 30, and one cultivation chamber 20A has one. Air is sent from the air circulation device 30.
- One cultivation apparatus 1A includes one cultivation room 10A, and one cultivation room 10A includes a plurality of cultivation chambers 20A and a plurality of air circulation apparatuses 30 corresponding to the respective cultivation chambers 20. It is possible to have a configuration in which air is sent from the corresponding air circulation device 30 to each of the plurality of cultivation chambers 20A. In this case, the temperature, humidity, carbon dioxide concentration, flow rate (flow rate), etc. of the circulating air can be changed for each cultivation chamber 20A.
- one cultivation apparatus 1A may include a plurality of cultivation rooms 10A, and each of the plurality of cultivation rooms 10A may include a plurality of cultivation chambers 20A and one air circulation device 30. Furthermore, one cultivation apparatus 1A may include a plurality of cultivation rooms 10A, and each of the plurality of cultivation rooms 10A may include a plurality of cultivation chambers 20A and a plurality of air circulation devices 30 corresponding to the respective cultivation chambers 20. .
- the nutrient solution circulation device 40 is arranged below the cultivation room 10A, and the nutrient solution adjusted to a predetermined condition is fed to the nutrient solution tray 210 of each cultivation chamber 20A at a predetermined flow rate.
- the nutrient solution that has been supplied and passed through each nutrient solution tray is collected and adjusted to satisfy predetermined conditions, and this is repeated to supply the nutrient solution in a circulating manner.
- the nutrient solution circulation device 40 only needs to have a function of adjusting at least the temperature of the nutrient solution and nutrients (various simple fertilizer ions such as nitrogen, phosphoric acid, and potassium).
- the nutrient solution circulation device 40 includes a nutrient solution sterilizer 410, a nutrient solution tank 420 connected to a city water supply source, a chiller device (not shown) having a heating and cooling function, and a nutrient supply.
- the apparatus 440, the oxygen supply apparatus 450 which adjusts dissolved oxygen concentration by supplying oxygen, and the nutrient solution pressure pump 460 are provided.
- Each cultivation chamber 20 ⁇ / b> A and the nutrient solution circulation device 40 are connected via a nutrient solution recovery pipe 470 and a nutrient solution supply pipe 480.
- the nutrient solution recovery pipe 470 extends in the longitudinal direction of the cultivation chamber 20A and is configured to recover the nutrient solution discharged from the discharge port of the nutrient solution tray 210.
- the nutrient solution supply pipe 480 extends in the longitudinal direction of the cultivation chamber 20, and the nutrient solution supply pipe 480 has a plurality of nutrient solution supply ports 481 formed at predetermined intervals.
- the nutrient solution supply port 481 may be opened to face downward in the nutrient solution supply pipe 480, but it is preferable to open the nutrient solution supply port 481 so as to face the direction along the flow direction of the nutrient solution as in the present embodiment. (See FIGS. 4 and 7). Thereby, compared with the case where it opens below, if the supply amount is the same, the flow rate of the nutrient solution can be increased.
- one cultivating apparatus 1A includes one cultivating room 10A, and one cultivating room 10A includes a plurality of culturing chambers 20A and one nutrient solution circulation device 40, and one cultivating chamber 20A includes one
- the nutrient solution is sent from the two nutrient solution circulation devices 40.
- the set value of the flow rate of the nutrient solution may be fixed or changeable.
- One cultivation device 1A is provided with one cultivation room 10A, and one cultivation room 10A has a plurality of cultivation chambers 20A, and a plurality of nutrient solution circulation devices 40 corresponding to each cultivation chamber 20
- the nutrient solution may be sent from the corresponding nutrient solution circulation device 40 to each of the plurality of cultivation chambers 20A.
- the temperature, nutrient content, flow rate, etc. of the nutrient solution can be changed for each cultivation chamber 20A.
- one cultivation apparatus 1A may include a plurality of cultivation rooms 10A, and each of the plurality of cultivation rooms 10A may include a plurality of cultivation chambers 20A and one nutrient solution circulation apparatus 40. Furthermore, one cultivation apparatus 1A includes a plurality of cultivation rooms 10A, and each of the plurality of cultivation rooms 10A includes a plurality of cultivation chambers 20A and a plurality of nutrient solution circulation apparatuses 40 corresponding to the respective cultivation chambers 20. Good.
- a water temperature sensor (not shown) is attached to the nutrient solution tank 420, and a single fertilizer sensor SFS for measuring the concentration of various nutrients is attached in the vicinity of the connection port with the nutrient solution recovery pipe 470 of the nutrient solution tank 420. Monitor the water temperature of the liquid and the concentration of various simple fertilizer ions.
- the chiller device adjusts the temperature of the nutrient solution according to the measurement result of the water temperature sensor.
- the nutrient supply device 440 includes a simple fertilizer ion concentration controller 441, a single fertilizer sensor SFS, and a single fertilizer ion supply plunger 442.
- the single fertilizer ion concentration control part 441 drives the single fertilizer ion supply plunger 442 according to the measurement result of various single fertilizer sensors SFS, and adjusts the single fertilizer ion concentration of a nutrient solution To do.
- the nutrient solution stored in the nutrient solution tank 420 is adjusted to a predetermined water temperature by the chiller device, adjusted to a predetermined simple fertilizer ion concentration by the nutrient supply device 440, and becomes a predetermined dissolved oxygen amount by the oxygen supply device 450. Adjusted to Thereafter, the nutrient solution is supplied from the nutrient solution pressure pump 460 to the nutrient solution tray 210 disposed in each cultivation chamber 20A via the nutrient solution supply pipe 480. As shown in FIG.
- the nutrient solution flows through the nutrient solution tray 210 along the short direction of the cultivation chamber 20 ⁇ / b> A at a predetermined flow velocity, is discharged from the discharge port 211 of the nutrient solution tray 210, and is supplied with the nutrient solution recovery tube It flows to 470.
- the nutrient solution collected by the nutrient solution collection tube 470 connected to each cultivation chamber 20A is sterilized by the nutrient solution sterilizer 410 and then flows into the nutrient solution tank 420. At this time, the flow direction of the nutrient solution in the cultivation chamber 20A is along the short direction of the cultivation chamber 20A.
- recovery can be shortened.
- the nutrient solution tank 420 may be provided for each cultivation chamber 20 ⁇ / b> A or only one for the cultivation room 10.
- the operation unit 50 is configured with buttons, a keyboard, and the like for setting the inside of the cultivation room 10 to be a predetermined cultivation environment. As shown in FIGS. 1 and 2, one end side in the longitudinal direction of the cultivation room 10 ( The air circulation device 30 is disposed on the outer side of the air circulation device 30.
- the control part 60 is arrange
- 70 for example, a central processing unit, a computer device comprising a RAM, a ROM and the like.
- the display unit 70 is for displaying the measurement results monitored by various sensors in each cultivation chamber 20 in the cultivation room 10, the predetermined cultivation environment set by the operation unit 50, and the like, and is configured by a liquid crystal panel or the like. Is done. As shown in FIGS. 2 and 3, the display unit 70 is disposed outside one end side in the longitudinal direction of the cultivation room 10 (the side where the air circulation device 30 is disposed).
- a control panel including an operation unit, a control unit, and a display unit is arranged at a predetermined location in the plant factory, and the cultivation environment of the plurality of cultivation chambers 20 in each of the plurality of cultivation rooms 10 is centrally managed by this control panel. May be.
- a cultivation device 1A used in an artificial light type plant factory has a rectangular parallelepiped-shaped cultivation room 10A capable of sealing the inside and a rectangular parallelepiped shape formed by dividing the cultivation room 10A in the vertical direction at a predetermined interval.
- Air circulation for supplying a plurality of cultivation chambers 20A and air adjusted to a predetermined condition to each of the plurality of cultivation chambers 20A at a predetermined flow rate, and collecting and circulating the supplied air from the plurality of cultivation chambers 20A.
- the apparatus 30 and a nutrient solution circulation apparatus 40 that supplies a nutrient solution adjusted to a predetermined condition to each of the plurality of cultivation chambers 20A at a predetermined flow rate, and collects and supplies the supplied nutrient solution from the cultivation chamber 20A.
- the cultivation room 10A has a sealable structure, when the cultivation apparatus 1A of the present invention is arranged in a work room where a person works in a plant factory, the cultivation room 10A and the work room are independent from each other. can do. Therefore, since it is not necessary for the plant and the person to coexist like the work room in the conventional plant factory, for example, the environment in the cultivation room 10A is not appropriate for the human body, but the optimum cultivation conditions for the plant. It can be.
- 1 A of cultivation apparatuses of this invention can set the optimal cultivation environment independently for every apparatus 1A, it can grow the plant from which cultivation conditions differ in one working room of a plant factory. Furthermore, by making the cultivation room 10A hermetically sealed, the temperature and humidity can be managed inside the cultivation room 10A without being affected by the temperature and humidity inside the plant factory. Therefore, since the environmental management conditions inside the plant factory can be set gently, the plant factory can be made larger.
- the cultivation apparatus 1A includes a plurality of rectangular cultivation plates 220, and the plurality of cultivation plates 220 are arranged in the cultivation chamber 20A so that the short side direction is along the longitudinal direction of the cultivation chamber 20A. It was supposed to be. Thereby, even if it is the elongate cultivation apparatus 1A (cultivation chamber 20A) which can arrange
- the cultivation apparatus 1A includes a nutrient solution tray 210 for pouring a nutrient solution disposed in the cultivation chamber 20, and the nutrient solution tray 210 is cultivated so that the downstream side of the nutrient solution flow is downward.
- An inclined surface inclined at a predetermined angle in the short direction of the chamber 20A was provided. Thereby, it is possible to flow the nutrient solution in the short direction at a predetermined flow rate without retaining the nutrient solution along the short direction of the cultivation chamber 20A.
- the nutrient solution tray can be configured shallower than when the nutrient solution is flowed in the longitudinal direction with an inclination in the longitudinal direction. Therefore, since the height of the cultivation chamber 20A can be reduced, the space can be saved.
- the cultivation chamber 20A is arranged in the same space, the number of stages of the cultivation chamber 20A can be increased, thereby increasing the production amount per unit area. be able to. Furthermore, since the plant can be cultivated while flowing the nutrient solution at a predetermined flow rate, a new nutrient solution can be kept in contact with the root of the plant at all times. Therefore, plant growth can be further promoted, and plant production efficiency can be improved.
- the nutrient solution tray of the cultivating apparatus 1 ⁇ / b> A is configured by a rectangular tray 210 that is substantially the same size as the cultivation plate 220 and can arrange the cultivation plate 220, and the plurality of rectangular trays 210 are short. It shall be arrange
- FIG. 8 is a functional block diagram showing the configuration of the cultivation apparatus 1B of the present invention.
- FIG. 9 is a perspective view showing the cultivation apparatus 1B.
- the cultivation apparatus 1B includes a cultivation room 10B, a plurality of cultivation chambers 20B, an air circulation device 30, a nutrient solution circulation device 40, an operation unit 50, a control unit 60, a display unit 70, a transport mechanism 80, Is provided.
- the cultivation room 10B is configured in a rectangular parallelepiped shape in which cultivation chambers 20B formed in a box shape are stacked in a plurality of vertical directions. Thereby, each of the plurality of cultivation chambers 20B is configured to be hermetically sealed, and can maintain a cultivation environment independent of the environment (temperature and humidity) of the work room of the plant factory where the cultivation apparatus 1B is arranged.
- a material for the cultivation chamber 20B it is preferable to use a heat insulating material so that the cultivation chamber 20B is not easily affected by the environment of the working room outside the cultivation room 10B.
- the cultivation room 10B includes a five-stage cultivation chamber 20B.
- the cultivation room cover part 12 for opening and closing this opening part 11 is provided (refer FIG.9 and FIG.12).
- the cultivation room cover part 12 is comprised by the electric hinge 13 so that opening and closing is possible as an example. Only when the nutrient solution tray 210 and the cultivation plate 220 are taken in and out, the cultivation room 10B can be sealed by opening the cultivation room lid 12 and closing the others.
- FIG. 10 shows the cross-sectional schematic diagram which looked at the cultivation room 10 of this invention from the longitudinal direction.
- the plurality of cultivation chambers 20 ⁇ / b> B are configured by airtight box-shaped members, and are arranged in multiple stages in the vertical direction in the cultivation room 10 ⁇ / b> B. That is, the plurality of cultivation chambers 20B are formed by the cultivation room 10B being partitioned by a box-like member at a predetermined interval in the vertical direction, and each has a substantially rectangular parallelepiped shape and is hermetically sealed.
- the cultivation chamber 20B has a chamber opening 21 and an opening for inserting and removing the nutrient solution tray 210 and the cultivation plate 220 on one end side in the longitudinal direction (the side opposite to the side where the air circulation device 30 is provided). And a chamber lid portion 22 that can open and close 21 (see FIG. 12).
- the chamber lid 22 is configured to be opened and closed by an electric hinge 23. Only when the nutrient solution tray 210 and the cultivation plate 220 are taken in and out, the cultivation chamber 20B can be sealed by opening the chamber lid 22 and closing the others.
- each of the plurality of cultivation chambers 20B can be controlled independently in different cultivation environments. Moreover, even if insects, fungi, etc. occur in one cultivation chamber 20B among the plurality of cultivation chambers 20B, there is a possibility that contamination of insects, fungi, etc. spreads to other cultivation chambers 20B in the same cultivation room 10B. Can be reduced.
- the inner wall of the cultivation chamber 20B is preferably made of a material having a reflectance of 90% or more from the viewpoint of efficiently absorbing light by the plant.
- the inner wall of the cultivation chamber 20B is preferably configured with a mirror surface having a reflectance of about 96% to 97%.
- a plurality of nutrient solution trays 210 and cultivation plates 220 are arranged in each cultivation chamber 20B so that the short direction thereof is along the longitudinal direction of the cultivation chamber 20B.
- the air circulation device 30 is disposed adjacent to the cultivation shelf 100 on one end side in the longitudinal direction of the cultivation room 10B, and the air adjusted to a predetermined condition is predetermined.
- the air is supplied to each cultivation chamber 20B at a flow rate, the air that has passed through the inside of each cultivation chamber 20B is recovered, adjusted so as to satisfy a predetermined condition, and this is repeated to supply the circulation.
- the air circulation device 30 only needs to have a function of adjusting at least the temperature, humidity, carbon dioxide concentration, and air flow rate (flow rate).
- the air circulation device 30 includes an air sterilization device 310, a direct expansion type air heating device 320 having a heating, cooling and dehumidifying function (a method of directly cooling air with a refrigerant), and a humidifying device having a humidifying function. 330, a carbon dioxide supply device 340 that adjusts the carbon dioxide concentration, a suction pump 350, and a compression pump 360.
- a chiller device of an inflating method (a method of cooling air through water with a refrigerant) may be used.
- Each cultivation chamber 20B and the air circulation device 30 are connected via an air recovery duct 370B and an air supply duct 380B.
- the air recovery duct 370B and the air supply duct 380B extend in the longitudinal direction of the cultivation chamber 20B, and the air recovery duct 370B and the air supply duct 380B are disposed adjacent to the cultivation chamber 20B (see FIGS. 10 and 11). ).
- a plurality of air recovery ports 371 provided at predetermined intervals are formed in the air recovery duct 370B, and a fan (not shown) for sucking air in the cultivation chamber into the air recovery duct 370B is formed in these air recovery ports 371.
- the air supply duct 380B is formed with a plurality of air supply ports 381 provided at predetermined intervals, and these air supply ports 381 are provided with constant flow valves (not shown).
- a temperature sensor, a humidity sensor, and a carbon dioxide concentration sensor are attached to predetermined locations of the cultivation chamber 20B, and the temperature, humidity, and carbon dioxide concentration of circulating air Is monitored.
- the air recovered from each cultivation chamber 20B by the suction pump 350 via the air recovery duct 370B is sterilized via the air sterilizer 310 and sent to the air conditioner 320.
- the air conditioner 320 temperature adjustment and dehumidification are performed according to the measurement results of the temperature sensor and the humidity sensor, and then the humidifier 330 performs humidification.
- the carbon dioxide supply device 340 supplies carbon dioxide from a carbon dioxide supply source 341 such as a carbon dioxide cylinder according to the measurement result of the carbon dioxide concentration sensor.
- the air adjusted to a predetermined condition and a predetermined flow velocity is supplied to each cultivation chamber 20B through the air supply pipe 380 by the compression pump 360. Under the present circumstances, as shown in FIG.
- the flow direction of the air in the cultivation chamber 20B is along the transversal direction of the cultivation chamber 20B.
- recovery can be shortened compared with the case where the flow direction of air is supplied so that the longitudinal direction of the cultivation chamber 20B may be followed. Therefore, changes in the cultivation environment such as temperature, humidity, and carbon dioxide concentration that occur on the upstream side and downstream side of the air flow can be reduced.
- the nutrient solution circulation device 40, the operation unit 50, the control unit 60, and the display unit 70 are configured in the same manner as in the first embodiment, and thus description thereof is omitted.
- one dimmer 231 of the artificial light source 230, the air circulation device 30, and the nutrient solution circulation device 40 are provided for one cultivation room 10B. It is good also considering the cultivation environment adjusted by these by arrange
- the dimmer 231, the air circulation device 30, and the nutrient solution circulation device 40 are arranged one by one for each cultivation chamber 20 ⁇ / b> B, and each of the plurality of cultivation chambers 20 ⁇ / b> B can be set to different cultivation environments.
- FIG. 12 is a schematic diagram for explaining the configuration of the transport mechanism 80
- FIG. 13 is an explanatory diagram of a transport method for the cultivation plate 220 using the transport mechanism 80.
- the transport mechanism 80 transports the plurality of cultivation plates 220 from outside the cultivation room 10B to a predetermined position in the cultivation chamber 20B, and conveys the plurality of cultivation plates 220 disposed in the cultivation chamber 20B to grow the cultivation room 10B. It is for taking out. As shown in FIG. 12, the transport mechanism 80 includes a transporter 810 and an elevator 820. In this embodiment, the case where the nutrient solution tray 210 is also conveyed with the cultivation plate 220 is demonstrated as an example.
- the conveyance machine 810 is provided in each of the plurality of cultivation chambers 20B, and is for conveying the nutrient solution tray 210 and the cultivation plate 220 in the longitudinal direction of the cultivation chamber 20B.
- the transporter 810 includes a plurality of rollers 811 and a roller support base 812, and is arranged so that the plurality of rollers 811 are in contact with the back surface of the nutrient solution tray 210.
- the roller support base 812 is a cultivation chamber. It arrange
- the plurality of rollers 811 are constituted by an electric drive roller and a non-drive roller, and the nutrient solution tray 210 and the cultivation plate 220 are moved in the longitudinal direction of the cultivation chamber 20B by controlling the rotation direction and the rotation amount of the electric drive roller. Can be conveyed. Note that all of the plurality of rollers 811 may be configured by electric drive rollers.
- the elevator 820 is provided adjacent to the side of the cultivation chamber 20B where the chamber opening 21 is provided, and moves the chamber tray 21 and the cultivation plate 220 in and out of the chamber opening 21 to move in the vertical direction. It is for conveying the nutrient solution tray 210 and the cultivation plate 220 between the opening part 21 and the cultivation room opening part 11 provided under the cultivation room 10B. Moreover, in this embodiment, the elevator 820 is arrange
- each of the plurality of cultivation chambers 20B in one cultivation room 10B can be easily and independently controlled in different cultivation environments. Moreover, since airtightness further increases, it is possible to further reduce contamination of insects and fungi from outside the cultivation room 10B. Moreover, even if insects, fungi, and the like are generated in one cultivation chamber 20B, it is possible to reduce the possibility of contamination by insects, fungi, and the like in other cultivation chambers 20B in the same cultivation room 10B.
- the elevator 820 includes a loading platform 821, a support column 822, a tray receiving plate 823, and a plurality of rollers 824.
- the loading platform 821 is attached to a support column 822 that extends in the vertical direction, and is movable in the vertical direction by electric power.
- a tray receiving plate 823 for receiving the nutrient solution tray 210 is attached to the loading platform 821 so as to be slidable in the longitudinal direction of the cultivation chamber 20B.
- the tray receiving plate 823 has a bifurcated shape that can be inserted into the space on both sides of the roller 811 and the roller support 812 shown in FIG.
- the plurality of rollers 824 are attached to the loading platform 821 and are configured by an electrically driven roller and a non-driven roller, and a surface formed by the plurality of rollers 824 can be tilted electrically (see FIGS. 13F and 13F). 13G).
- the nutrient solution tray 210 and the cultivation plate 220 can be sent out from the loading platform 821 toward the cultivation room opening 11 by controlling the rotation direction and the rotation amount of the electric drive roller and tilting the surface constituted by the plurality of rollers 824. it can.
- the transfer device 810 is arranged in the vicinity of the cultivation chamber 20B to be taken out at a position that does not interfere even when the chamber lid portion 22 is opened and closed.
- the conveyance machine 810 is arrange
- the transfer device 810 is moved to the vicinity of the lower limit of the chamber opening 21 (see FIG. 13A). From the state shown in FIG. 13A, the tray receiving plate 823 is slid toward the chamber opening 21 (see FIG. 13B) and inserted into the space on both sides of the roller 811 and the roller support 812.
- the loading platform 821 is slightly raised together with the tray receiving plate 823, and the nutrient solution tray 210 and the cultivation plate 220 are placed on the tray receiving plate 823 (see FIG. 13C).
- the loading platform 821 is moved downward toward the cultivation room opening 11 (see FIG. 13D).
- the chamber lid 22 After moving the loading platform 821 to the cultivation room opening 11 from the state shown in FIG. 13D, the chamber lid 22 is closed by the electric hinge 23, and then the electric drive roller among the plurality of rollers 824 of the transporter 810 is moved. By operating, all the remaining nutrient solution trays 210 (and the cultivation plate 220) are moved to the chamber opening 21 side by one sheet. Moreover, the cultivation room cover part 12 is made into an open state by the electric hinge 13 (refer FIG. 13E).
- the nutrient tray 210 and the cultivation plate 220 are transferred from the vicinity of the cultivation room opening 11 by a person or other transport means, and then the cultivation room lid 12 is closed by the electric hinge 13. Then, the inclinations of the plurality of rollers 824 attached to the loading platform 821 are restored (see FIG. 13G).
- FIGS. 13A to 13G the procedure performed in FIGS. 13A to 13G is repeated until all of the nutrient solution tray 210 and the cultivation plate 220 in the lowermost cultivation chamber 20B are taken out. Thereafter, by repeating the same operation in the remaining cultivation chamber 20B, all of the nutrient solution tray 210 and the cultivation plate 220 in the cultivation room 10B can be taken out of the cultivation room 10B.
- the nutrient solution tray 210 and the cultivation plate 220 can be conveyed by the conveyance mechanism 80 one set at a time in a state where the cultivation plate 220 is arranged on the nutrient solution tray 210.
- the nutrient solution tray 210 can be collected together with the cultivation plate 220, the nutrient solution tray 210 can be easily cleaned and the inside of the cultivation chamber 20B can be kept clean as compared with the case where the nutrient solution tray is installed in the cultivation chamber. be able to.
- the nutrient solution tray 210 and the cultivation plate 220 in the cultivation chamber 20B can be sequentially arranged at predetermined positions.
- the cultivation apparatus 1B of the present invention described above has the following effects.
- the cultivation chamber 20B of the cultivation apparatus 1B used in the artificial light type plant factory is composed of a box-shaped member, and the chamber opening 21 for taking in and out the cultivation plate 220 on one end side in the longitudinal direction, and the opening It is assumed that the cultivation chamber 20B can be sealed by closing the chamber opening portion 21 with the chamber lid portion 22.
- each of the some cultivation chamber 20B can be controlled independently in a different cultivation environment.
- the cultivation apparatus 1B used in the artificial light type plant factory further includes a conveyance mechanism 80 for conveying the cultivation plate 220, and the conveyance mechanism 80 is provided in the cultivation chamber 20B, and the cultivation chamber 20B. Is provided adjacent to the side of the cultivation chamber 20B on which the chamber opening 21 is provided, and moves the cultivation plate 220 up and down from the chamber opening 21. And an elevator 820 for conveying in the direction. Thereby, even if it is cultivation apparatus 1B provided with cultivation chamber 20B piled up in many steps in length, cultivation plate 220 can be conveyed to a desired position with conveyance mechanism 80.
- Elevator 820 of conveyance mechanism 80 shall be provided in cultivation room 10B, and cultivation room 10B is a cultivation room opening for putting cultivation plate 220 in and out at one end side where elevator 820 was provided among longitudinal directions. It has the cultivation room cover part 12 which can open and close the part 11 and this opening part 11. As shown in FIG. Thereby, compared with the case where the elevator 820 is arrange
- the sealing property can be further enhanced.
- each of the plurality of cultivation chambers 20B in one cultivation room 10B can be easily and independently controlled in different cultivation environments. Moreover, since airtightness further increases, it is possible to further reduce contamination of insects and fungi from outside the cultivation room 10B.
- the nutrient solution tray of the cultivating apparatus 1B is configured by a rectangular tray 210 that is substantially the same size as the cultivation plate 220 and on which the cultivation plate 220 can be arranged.
- the cultivation plate 220 and the rectangular tray 219 are transported in a state of being arranged on the shape tray 210.
- the nutrient solution tray 210 can also be collected together with the cultivation plate 220, the nutrient solution tray 210 can be easily cleaned and the inside of the cultivation chamber 20B can be kept clean as compared with the case where the nutrient solution tray is installed in the cultivation chamber. it can.
- this invention is not limited to the above-mentioned embodiment, It can change suitably.
- each supply pipe and each recovery pipe may be configured to be in opposite directions.
- the flow direction of the air and nutrient solution which are each supplied to the cultivation chamber 20 by the air circulation apparatus 30 and the nutrient solution circulation apparatus 40 was made to follow the transversal direction of the cultivation chamber 20, Not limited to this. That is, the flow directions of air and nutrient solution supplied to the cultivation chamber may be set along the longitudinal direction of the cultivation chamber.
- a plug connected to a city water supply source and a plug connected to a carbon dioxide supply source are collectively configured as a single cultivation device side plug, and this cultivation device side plug is water provided in a plant factory. And it is good also as a structure by which water and a carbon dioxide are supplied to a cultivation apparatus by connecting with the factory side plug which can supply a carbon dioxide.
- each cultivation device may be provided with an operation unit, a control unit, and a display unit that can centrally control a plurality of cultivation devices individually or collectively without providing an operation unit, a control unit, and a display unit.
- you may provide this operation part, a control part, and a display part in the place away from the installation place of a cultivation apparatus.
- the air recovery duct and the air supply duct are described as an example of the configuration provided outside the cultivation chamber in the cultivation room, but the present invention is not limited thereto. As long as the airtightness in the cultivation chamber can be maintained, the air recovery duct and the air supply duct may be arranged inside the cultivation chamber or outside the cultivation room.
- the nutrient plate is transported together with the cultivation plate by the transport mechanism as a method for transporting the cultivation plate, but the present invention is not limited thereto.
- the nutrient solution tray may be stationary in the cultivation chamber, and the conveyance mechanism may be configured to convey only the cultivation plate.
- the transport mechanism may be configured to transport a plurality of sets.
- the above-mentioned 2nd Embodiment showed the structure which arrange
- the structure of the roller conveyor system by a some roller was shown as a conveyance means of the longitudinal direction of a cultivation chamber in the conveyance machine and elevator of a conveyance mechanism, it is not restricted to this.
- other methods such as a belt conveyor method or a chain conveyor method may be used as the conveying means.
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Abstract
Description
植物工場は、完全人工光型と太陽光利用型の2つの種類に大別される。完全人工光型は、閉鎖環境で太陽光を用いずに人工光源のみで栽培するものであり、太陽光利用型は、温室に近い環境で、太陽光の利用を基本とし、人工光による補光や夏季の高温抑制技術を用いて栽培するものである。
また、植物に供給される養液量を制御するため、循環方式の養液供給装置が用いられる(特許文献2参照)。
また、循環方式の養液供給装置により常に一定量の養液が植物に供給されたとしても、養液の水温は、人工光源の点灯期間中の排熱により上昇し、消灯期間中には徐々に下降して一定とはならない。
このように従来の植物工場では、栽培室内の空気の温度や湿度の場所による不均一や、時間による養液の温度変化が生じる。空気の温度、湿度の変化や養液の温度の変化によって、植物の生長速度は影響を受けるため、このような栽培環境の局所的変化や経時的変化は、植物工場の生産性の低下を招く。
前記複数の栽培プレートは、短手方向が前記栽培チャンバの長手方向に沿うように、前記栽培チャンバに配置されることが好ましい。
本発明の栽培装置は、人工光型の植物工場で用いられるものであり、従来では栽培環境の管理が困難であった生産規模の大きい植物工場に好適に用いられる。
第1実施形態の栽培装置1Aについて、図1~図7を参照して説明する。
図1は本発明の栽培装置1Aの構成を示す機能ブロック図である。栽培装置1Aは、栽培室10Aと、複数の栽培チャンバ20Aと、空気循環装置30と、養液循環装置40と、操作部50と、制御部60と、表示部70と、を備える。
複数の栽培チャンバ20Aは、図4に示すように、栽培室10Aが上下方向に所定の間隔で棚板111により区画されて形成され、それぞれが略直方体形状を有する。複数の栽培チャンバ20Aは、従来公知の多段式の栽培棚に外装を設けることにより構成することができる。本実施形態では、5段の栽培棚100に外装(栽培室10Aの外壁)を設けて構成した。
尚、栽培チャンバ20Aの形状は、生産規模の大きい植物工場に好適に用いられるため、長手方向の長さが短手方向の長さに対して2倍以上である長尺な形状であることが好ましい。本実施形態では、短手方向の長さ:長手方向の長さ=1:5である。ただし、栽培チャンバ20Aの大きさ(栽培チャンバ20Aに配置される栽培プレート220の枚数)は、上述の実施形態の大きさに限られない。
また、本実施形態で養液トレイ210及び栽培プレート220は矩形であるが、これに限らず正方形であってもよい。正方形の場合、正方形の栽培プレート220の一辺が栽培チャンバ20Aの長手方向に沿うよう配置される。
このように、養液トレイ210が配置された状態においては、複数の栽培チャンバ20は、それぞれが密閉又は半密閉の状態となる。
尚、養液トレイ210は、栽培プレート220の1枚分に対応するサイズでなくてもよく、複数枚の栽培プレート220を1つの養液トレイ210に配置することができるよう構成してもよい。
尚、温度を調整する機能を有する装置として、間膨方式(冷媒で水を介して空気を冷やす方式)のチラー装置を用いてもよい。
なお、空気の流速の設定値は、固定でもよく、また変更可能でもよい。
この際、図4に示すように栽培チャンバ20Aにおける空気の流れ方向は、栽培チャンバ20Aの短手方向に沿っている。これにより、空気の流れ方向を栽培チャンバ20Aの長手方向に沿うように供給した場合に比べて、空気の供給から回収までの時間を短くすることができる。よって、空気の流れの上流側と下流側とで生じる温度や湿度、二酸化炭素濃度等の栽培環境の変化を小さくすることができる。
ただし、これに限定されず、栽培チャンバ20Aにおける空気の流れ方向は、栽培チャンバ20Aの上方から下方に沿っていてもよい。
さらに、1つの栽培装置1Aが複数の栽培室10Aを備え、複数の栽培室10Aがそれぞれ、複数の栽培チャンバ20Aと、それぞれの栽培チャンバ20に対応する複数の空気循環装置30を備えてもよい。
なお、養液の流速の設定値は、固定でもよく、また変更可能でもよい。
さらに、1つの栽培装置1Aが複数の栽培室10Aを備え、複数の栽培室10Aがそれぞれ、複数の栽培チャンバ20Aと、それぞれの栽培チャンバ20に対応する複数の養液循環装置40を備えてもよい。
養分供給装置440は、単肥イオン濃度制御部441、単肥センサSFS及び単肥イオン供給プランジャ442を含んで構成される。そして、この養分供給装置440では、単肥イオン濃度制御部441が、各種単肥センサSFSの測定結果に応じて、単肥イオン供給プランジャ442を駆動して、養液の単肥イオン濃度を調整する。尚、養液の単肥イオン濃度は、pHセンサ及びECセンサを用いて測定してもよい。
この際、栽培チャンバ20Aにおける養液の流れ方向は、栽培チャンバ20Aの短手方向に沿っている。これにより、養液の流れ方向が栽培チャンバ20Aの長手方向に沿う場合に比べて、養液の供給から回収までの時間を短くすることができる。
尚、養液タンク420は、栽培チャンバ20A毎に設けてもよいし、栽培室10につき1つだけ設けてもよい。
これにより、密閉された栽培室10Aで上下方向に配置された複数の栽培チャンバ20Aのそれぞれに空気循環装置30により空気を供給するので、栽培室10Aにおいて場所によらず均一な栽培環境を提供できる。
また、栽培室10Aは、密閉可能な構造であるので、植物工場において人が作業する作業室に本発明の栽培装置1Aを配置した場合に、栽培室10A内と作業室とは独立した環境とすることができる。よって、従来の植物工場における作業室のように植物と人とを共存させる必要がないので、例えば、栽培室10A内の環境を人体にとっては適切とはいえないが、植物にとっては最適な栽培条件とすることができる。また、本発明の栽培装置1Aは、装置1Aごと独立して最適な栽培環境を設定できるので、植物工場の1つの作業室において栽培条件の異なる植物を栽培することができる。更に、栽培室10Aを密閉式としたことで、植物工場の内部の温度及び湿度に影響されることなく栽培室10Aの内部に温度及び湿度を管理できる。よって、植物工場の内部の環境管理条件を緩やかに設定できるので、植物工場をより大型化できる。
第2実施形態の栽培装置1Bについて、図8~図13を参照して説明する。
第2実施形態にかかる栽培装置1Bは、栽培室の構成、栽培チャンバの構成、及び、栽培チャンバと空気循環装置とを接続する空気回収管の構成が、第1実施形態におけるものとは異なり、更に、栽培プレートを搬送するための搬送機構を備える点で第1実施形態と異なる。本実施形態では、第1実施形態と異なる構成について詳細に説明し、同様の構成については、同じ符号を付して説明を省略する。
図8は本発明の栽培装置1Bの構成を示す機能ブロック図である。図9は、栽培装置1Bを示す斜視図である。
栽培装置1Bは、栽培室10Bと、複数の栽培チャンバ20Bと、空気循環装置30と、養液循環装置40と、操作部50と、制御部60と、表示部70と、搬送機構80と、を備える。
養液トレイ210及び栽培プレート220を出し入れするときのみ、栽培室蓋部12を開け、その他は閉じた状態とすることにより、栽培室10Bを密閉状態とすることができる。
複数の栽培チャンバ20Bは、密閉性のある箱状部材で構成され、栽培室10B内で上下方向に多段に配置される。即ち、複数の栽培チャンバ20Bは、栽培室10Bが上下方向に所定の間隔で箱状部材により区画されて形成され、それぞれが略直方体形状を有し、密閉性を備える。
養液トレイ210及び栽培プレート220を出し入れするときのみ、チャンバ蓋部22を開け、その他は閉じた状態とすることにより、栽培チャンバ20Bを密閉状態とすることができる。よって、栽培チャンバがそれぞれ密閉されていない構成に比べて、栽培チャンバ20Bからの空気(特に二酸化炭素)の漏出及び栽培チャンバ20Bへの空気の混入を低減することができるので、1つの栽培室10B内において、複数の栽培チャンバ20Bのそれぞれを異なる栽培環境で独立に制御することができる。また、複数の栽培チャンバ20B間で、たとえ、1つの栽培チャンバ20Bに虫や菌等が発生しても、同じ栽培室10B内の他の栽培チャンバ20Bに虫や菌等の汚染が広がる可能性を低減することができる。
尚、温度を調整する機能を有する装置として、間膨方式(冷媒で水を介して空気を冷やす方式)のチラー装置を用いてもよい。
尚、本実施形態では、第1実施形態で説明した場合と同様に、1つの栽培室10Bに対して、人工光源230の調光器231、空気循環装置30及び養液循環装置40を1つずつ配置して、これらにより調整される栽培環境を各栽培チャンバ20Bで同じものとしてもよい。また、栽培チャンバ20B毎に、調光器231、空気循環装置30及び養液循環装置40を1つずつ配置して、複数の栽培チャンバ20Bのそれぞれを異なる栽培環境とすることもできる。
昇降機820は、図12に示すように、荷台821と、支柱822と、トレイ受け板823と、複数のローラ824と、で構成されている。
図13Aに示す状態から、トレイ受け板823をチャンバ開口部21に向かってスライドさせ(図13B参照)、ローラ811及びローラ支持台812の両側の空間に挿入させる。
また、上述の第2実施形態では、搬送機構の搬送機及び昇降機において、栽培チャンバの長手方向の搬送手段として、複数のローラによるローラコンベア方式の構成を示したが、これに限らない。例えば、搬送手段として、ベルトコンベア方式やチェインコンベア方式等、他の方式を用いてもよい。
10A、10B 栽培室
20A、20B 栽培チャンバ
30 空気循環装置
40 養液循環装置
50 操作部
60 制御部
70 表示部
80 搬送機構
100 栽培棚
210 養液トレイ(矩形状トレイ)
220 栽培プレート
230 人工光源
370A 空気回収管
370B 空気回収ダクト
380 空気供給管
380B 空気供給ダクト
420 養液タンク
460 養液圧力ポンプ
470 養液回収管
480 養液供給管
810 搬送機
820 昇降機
Claims (13)
- 人工光型の植物工場で用いられる栽培装置であって、
内部を密閉可能な栽培室と、
前記栽培室が上下方向に所定の間隔で区画されて形成される複数の栽培チャンバと、
所定の条件に調整された空気を前記複数の栽培チャンバのそれぞれに所定の流速で供給し、該供給された空気を前記複数の栽培チャンバから回収して循環させる空気循環装置と、
所定の条件に調整された養液を前記複数の栽培チャンバのそれぞれに所定の流速で供給し、該供給された養液を前記栽培チャンバから回収して循環させる養液循環装置と、を備える栽培装置。 - 前記所定の条件に調整された空気を前記複数の栽培チャンバのそれぞれに、変更可能な設定値の流速で供給する、
請求項1に記載の栽培装置。 - 前記所定の条件に調整された養液を前記複数の栽培チャンバのそれぞれに、変更可能な設定値の流速で供給する、
請求項1又は2に記載の栽培装置。 - 前記空気循環装置及び前記養液循環装置により前記栽培チャンバにそれぞれ供給される養液の流れ方向は、該栽培チャンバの短手方向に沿っている請求項1から3のいずれか1項に記載の栽培装置。
- 前記空気循環装置及び前記養液循環装置により前記栽培チャンバにそれぞれ供給される空気の流れ方向は、該栽培チャンバの短手方向に沿っている請求項1から4のいずれか1項に記載の栽培装置。
- 前記空気循環装置及び前記養液循環装置により前記栽培チャンバにそれぞれ供給される空気の流れ方向は、該栽培チャンバの上方から下方に沿っている請求項1から4のいずれか1項に記載の栽培装置。
- 複数の矩形状の栽培プレートを備えており、
前記複数の栽培プレートは、短手方向が前記栽培チャンバの長手方向に沿うように、前記栽培チャンバに配置される請求項1から6のいずれか1項に記載の栽培装置。 - 前記栽培チャンバに配置され、養液を流し入れるための養液トレイを備え、
前記養液トレイは、前記栽培プレートと略同じ大きさで該栽培プレートを配置可能な矩形状トレイで構成されており、
複数の前記矩形状トレイは、短手方向が前記栽培チャンバの長手方向に沿うように、前記栽培チャンバに配置される請求項7に記載の栽培装置。 - 前記養液トレイは、養液の流れの下流側が下方になるように、前記栽培チャンバの短手方向について所定の角度で傾斜した傾斜面を備える請求項8に記載の栽培装置。
- 前記栽培チャンバは、箱状部材で構成され、長手方向の一端側に前記栽培プレートを出し入れするためのチャンバ開口部と、該チャンバ開口部を開閉可能なチャンバ蓋部と、を有しており、
前記チャンバ蓋部で前記チャンバ開口部を閉じることにより、前記栽培チャンバを密閉状態とすることができる請求項7から9のいずれかに記載の栽培装置。 - 前記栽培プレートを搬送するための搬送機構を更に備えており、
前記搬送機構は、
前記栽培チャンバ内に設けられ、該栽培チャンバの長手方向に前記栽培プレートを搬送するための搬送機と、
前記栽培チャンバの前記チャンバ開口部が設けられた側に隣接して設けられ、前記栽培プレートを前記チャンバ開口部から出し入れして上下方向に搬送するための昇降機と、
を有する請求項10に記載の栽培装置。 - 前記昇降機は、前記栽培室内に設けられており、
前記栽培室は、長手方向のうち前記昇降機が設けられた一端側に、前記栽培プレートを出し入れするための栽培室開口部及び該栽培室開口部を開閉可能な栽培室蓋部を有する請求項11に記載の栽培装置。 - 前記栽培チャンバに配置され、養液を流し入れるための養液トレイは、前記栽培プレートと略同じ大きさで該栽培プレートを配置可能な矩形状トレイで構成されており、
前記搬送機構は、前記栽培プレートが前記矩形状トレイに配置された状態で、栽培プレート及び矩形状トレイを搬送する請求項11又は12に記載の栽培装置。
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