JP2020061968A - Plant culture system - Google Patents

Abstract

To preferably maintain an environment in a culture chamber.SOLUTION: A plant culture system 100 comprises a plurality of culture racks 24 comprising a plurality of culture shelves. On one side surface in a longer direction of each culture shelf, a plurality of suction fans 40 are provided, and on the other side surface in the longer direction, a plurality of exhaust fans 41 are provided. The plurality of culture racks 24 are arranged so that the side surfaces where the suction fans 40 are arranged face each other, and the side surfaces where the exhaust fans 41 are arranged face each other. A suction fan side passage 42 is formed between the culture racks 24 where the side surfaces where the suction fans 40 are arranged face each other, and an exhaust fan side passage 43 is formed between the culture racks 24 where the side surfaces where the exhaust fans 41 are arranged face each other. Air in the suction fan side passage 42 is sucked into a culture space by the suction fans 40, and air in the culture space is discharged to the exhaust fan side passage 43 by the exhaust fans 41, thereby generating an air current flowing into the suction fan side passage 42 from the exhaust fan side passage 43.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a plant cultivation system.

  BACKGROUND ART Conventionally, there is known a plant cultivation system in which a plant such as lettuce is cultivated indoors by arranging a fluorescent lamp or an LED light as a light source in a cultivation shelf.

  In such a plant cultivation system, since the temperature and humidity environment in the cultivation shelf changes due to heat generated by lighting the light and evaporation by the plant, it is possible to control the environment in the cultivation shelf to keep the growth environment of the plant at a constant condition. Desired. Patent Document 1 describes that a fan for air suction is arranged on a side surface of a cultivation shelf to supply a wind having an appropriate strength to a space inside the cultivation shelf and keep the concentration of oxygen and carbon dioxide constant. Has been done.

JP, 2017-212955, A

  By the way, in the plant cultivation system, usually, a plurality of cultivation shelves are stacked in the vertical direction, and a plurality of the stacked cultivation shelves are arranged in the cultivation room. Due to the existence of the stacked cultivation shelves, the air flow in the cultivation room is increased. In some cases, it is difficult to keep the temperature and humidity environment in the cultivation room suitable.

  The present invention has been made in view of these circumstances, and an object of the present invention is to provide a plant cultivation system capable of maintaining a suitable environment in the cultivation room.

  In order to solve the above-mentioned subject, the plant cultivation system of one mode of the present invention is a plant cultivation system with which a plurality of cultivation racks were arranged in a cultivation room. Each cultivation rack includes a plurality of cultivation shelves in the vertical direction. Reflecting plates are arranged on the four sides of each cultivation shelf, and the space surrounded by the reflecting plates is a cultivation space for cultivating plants. One of the longitudinal sides of each cultivation shelf is provided with a plurality of intake fans for sucking the outside air into the cultivation space, and the other longitudinal side of each cultivation shelf, the air in the cultivation space to the outside. A plurality of exhaust fans are provided for exhausting. The plurality of cultivation racks are arranged in parallel at predetermined intervals so that the side faces on which the intake fans are arranged face each other and the side faces on which the exhaust fans are arranged face each other. An intake fan side passage, which is a partially closed semi-closed space, is formed between the adjacent cultivation racks where the side surfaces on which the intake fans are arranged face each other. An exhaust fan side passage, which is a partially closed semi-closed space, is formed between the adjacent cultivation racks where the side surfaces on which the exhaust fans are arranged face each other. Airflow flowing from the exhaust fan side passage to the intake fan side passage by sucking the air in the intake fan side passage into the cultivation space by the intake fan and discharging the air in the cultivation space into the exhaust fan side passage by the exhaust fan Occurs.

  An upper air blocking member for blocking the flow of air may be disposed between the top surface of each cultivation rack and the ceiling of the cultivation room.

  A lower air blocking member for blocking the flow of air may be arranged between the bottom surface of each cultivation rack and the floor of the cultivation room.

  A passage air blocking member for blocking the flow of air is arranged on one side surface of the intake fan side passage and the exhaust fan side passage on the shorter side, and the other side of the intake fan side passage and the exhaust fan side passage on the shorter side. The sides of the may be open.

  An air conditioner may be further provided that sucks air in the exhaust fan side passage, adjusts the temperature and humidity of the air, and sends the adjusted air into the intake fan side passage.

  The intake fan and the exhaust fan may be configured to be able to adjust the air volume according to the vertical position of the cultivation shelf where they are arranged.

  The intake fan and the exhaust fan increase the air volume of the intake fan and the exhaust fan arranged on the upper cultivation shelves, and decrease the air volume of the intake fan and the exhaust fan arranged on the lower cultivation shelves. As a result, a first operation mode for generating an ascending airflow in the intake fan side passage and a descending airflow in the exhaust fan side passage may be provided.

  The intake fan and the exhaust fan reduce the air volume of the intake fan and the exhaust fan arranged on the upper cultivation rack, and increase the air volume of the intake fan and the exhaust fan arranged on the lower cultivation shelf. As a result, a second operation mode in which a descending air flow is generated in the intake fan side passage and an ascending air flow is generated in the exhaust fan side passage may be provided.

  It should be noted that any combination of the above constituent elements, and the expression of the present invention converted between methods, devices, systems, etc. are also effective as an aspect of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the plant cultivation system which can maintain the environment in a cultivation room suitable can be provided.

It is a schematic plan view of the plant cultivation system which concerns on embodiment of this invention. It is an AA schematic sectional drawing of the plant cultivation system shown in FIG. It is a schematic perspective view for demonstrating the structure of a cultivation unit. It is a schematic plan view for demonstrating the flow of the air in the plant cultivation system which concerns on embodiment of this invention. It is an AA schematic sectional drawing of the plant cultivation system shown in FIG. It is a schematic sectional drawing of an exhaust fan side passage. It is a schematic sectional drawing of an intake fan side passage. It is a schematic plan view for demonstrating the flow of the air in the plant cultivation system which concerns on embodiment of this invention. It is a schematic sectional drawing for demonstrating the 1st operation mode of an intake fan and an exhaust fan. It is a schematic sectional drawing for demonstrating the 2nd operation mode of an intake fan and an exhaust fan. It is a schematic sectional drawing of the exhaust fan side passage in the plant cultivation system which concerns on another embodiment of this invention. It is a schematic sectional drawing of the intake fan side passage in the plant cultivation system which concerns on another embodiment of this invention. It is a schematic perspective view of the ceiling vicinity of the intake fan side passage in the plant cultivation system which concerns on another embodiment of this invention.

  Hereinafter, a plant cultivation system according to an embodiment of the present invention will be described in detail with reference to the drawings. Since each drawing is intended to describe the positional relationship of each member, it does not necessarily represent the actual dimensional relationship of each member. In the description of the embodiments, the same or corresponding components will be denoted by the same reference symbols, and redundant description will be omitted as appropriate.

  FIG. 1 is a schematic plan view of a plant cultivation system 100 according to this embodiment. FIG. 2 is an AA schematic cross-sectional view of the plant cultivation system 100 shown in FIG.

  As shown in FIGS. 1 and 2, the plant cultivation system 100 includes a plurality of cultivation racks 24 arranged in a cultivation room 23. The cultivation room 23 is a semi-closed space in which the influence of the external environment is blocked by a heat insulating panel or the like. In the present embodiment, the cultivation chamber 23 has a rectangular parallelepiped space and is partitioned by a ceiling 30, a floor 31, a front side wall 32, a back side wall 33, a left side wall 34, and a right side wall 35. In the present embodiment, as shown in FIG. 1, the width of the front side wall 32 and the back side wall 33 is larger than that of the left side wall 34 and the right side wall 35. In the present embodiment, the plurality of cultivation racks 24 are arranged in parallel in the width direction of the front side wall 32 and the rear side wall 33. The longitudinal direction of each cultivation rack 24 is parallel to the width direction of the left side wall 34 and the right side wall 35. The number of the cultivation racks 24 is not particularly limited, and may be appropriately set according to the size of the cultivation chamber 23 (for example, the width of the front side wall 32 and the rear side wall 33).

  As shown in FIG. 2, each cultivation rack 24 includes a plurality of cultivation shelves 10 stacked in the vertical direction. In the embodiment shown in FIG. 2, the cultivation shelves 10 are stacked in 12 steps, but the number of steps of the cultivation shelves 10 is not particularly limited, and may be appropriately set according to the ceiling height of the cultivation room 23 and the like.

  As shown in FIG. 1, each cultivation shelf 10 is composed of a plurality of cultivation units 26 arranged in a row in the lateral direction (horizontal direction). In the embodiment shown in FIG. 1, the cultivation shelf 10 is composed of six cultivation units 26, but the number of cultivation units 26 is not particularly limited, and the size of the cultivation room 23 (for example, the left side wall 34 and the right side). It may be appropriately set according to the width of the wall 35).

  FIG. 3 is a schematic perspective view for explaining the configuration of the cultivation unit 26. As shown in FIG. 3, the cultivation unit 26 is formed between the upper and lower two shelf plates 11 and 11 ′ of the cultivation rack. The cultivation unit 26 is provided on the upper surface of the lower shelf 11 ′, the nutrient solution pool 12, the cultivation panel 13 arranged on the nutrient solution pool 12, and the lower surface of the upper shelf 11. The ceiling surface member 14 and the reflection plate 17 arranged on the side surface in the longitudinal direction of the space between the shelf plates 11 and 11 ′ are provided.

  The cultivating panel 13 is a styrofoam plate having holes for planting a plurality of plants. The plurality of holes are formed at a predetermined pitch. Cultivation panels with different pitches may be used depending on the growth process of the plant. For example, at the time of raising seedlings, a seedling raising panel having a pitch of 60 mm is used, and thereafter, a planting panel having a pitch of 200 mm is planted. The surface of the cultivation panel 13 may be formed to reflect light. For example, the surface material of the cultivation panel 13 may be reflective, the surface of the cultivation panel 13 may be coated with a reflecting material, or the surface of the cultivation panel 13 may be covered with a reflector. .

  As shown in FIG. 3, an LED light source 15 is provided on the ceiling surface member 14. The LED light source 15 is an artificial light source that irradiates the plant 22 with light. The LED light source 15 includes a red LED light source and a blue LED light source, and alternately implements a bright period in which red illumination and blue illumination are simultaneously emitted and a dark period in which they are not emitted. The artificial light source is not limited to the LED light source as long as the light intensity is adjustable, and may be, for example, an LD (laser diode), a CCFL (cold cathode fluorescent tube), or a fluorescent lamp. The surface of the ceiling surface member 14 is formed to reflect light. For example, a reflecting material may be applied to the surface of the ceiling surface member 14, or the surface of the ceiling surface member 14 may be covered with a reflecting plate.

  The nutrient solution pool 12 is connected to a nutrient solution tank (not shown), and receives the nutrient solution necessary for growing the plants 22 from the nutrient solution tank.

  As described above, the plurality of cultivation units 26 are arranged in a row to form one cultivation shelf 10. Reflectors 18 (see FIG. 1) are arranged on the lateral sides of the cultivation units 26 located at both ends. Therefore, in the cultivation shelf 10, the reflectors are arranged on the four side surfaces (two opposing longitudinal side surfaces and two opposing lateral sides). In the cultivation shelf 10, a cultivation space 20 having the cultivation panel 13 as the bottom surface, the reflection plates 17 and 18 as the side surfaces, and the ceiling surface member 14 as the ceiling is formed, and the plants 22 are cultivated in the cultivation space 20.

  As described above, in the plant cultivation system 100 according to the present embodiment, since the reflection plates are arranged on the four side surfaces of the cultivation shelf 10, the light energy from the LED light source 15 is unlikely to leak to the outside of the cultivation space 20. Therefore, since the utilization efficiency of light energy is increased, the amount of light energy supplied to the cultivation space 20 can be suppressed.

  In the present embodiment, each cultivation shelf 10 includes a plurality of intake fans 40 provided on one longitudinal side surface thereof and a plurality of exhaust fans 41 provided on the other longitudinal side surface thereof. The intake fan 40 is a fan for sucking outside air into the cultivation space 20. The exhaust fan 41 is a fan for exhausting the air in the cultivation space 20 to the outside. The intake fan 40 and the exhaust fan 41 are arranged at predetermined intervals along the longitudinal direction of the cultivation shelf 10.

  As shown in FIGS. 1 and 2, the plurality of cultivation racks 24 are arranged at predetermined intervals so that the side surfaces on which the intake fan 40 is arranged face each other and the side surfaces on which the exhaust fan 41 is arranged face each other. Opened in parallel. An intake fan-side passage 42, which is a partially closed semi-closed space, is formed between the adjacent cultivation racks 24 where the side surfaces on which the intake fans 40 are arranged face each other. Further, an exhaust fan side passage 43, which is a partially closed semi-closed space, is formed between the adjacent cultivation racks 24 where the side surfaces on which the exhaust fan 41 is arranged face each other. In the present embodiment, the side surfaces of the cultivation racks 24 at both ends on which the intake fans 40 are arranged face the left side wall 34 and the right side wall 35, respectively. Therefore, the intake fan side passages 42 are formed between the left side wall 34 and the right side wall 35, and the side surface of the cultivation rack 24 on which the intake fans 40 are arranged, respectively.

  In the plant cultivation system 100 according to the present embodiment, an upper air blocking member 44 for blocking the flow of air is arranged between the uppermost surface of each cultivation rack 24 and the ceiling 30 of the cultivation room 23. Further, a lower air blocking member 45 for blocking the flow of air is arranged between the lowermost surface of each cultivation rack 24 and the floor 31 of the cultivation room 23. The upper air blocking member 44 and the lower air blocking member 45 may be, for example, resin boards or cloth curtains. Further, a passage air blocking member 46 for blocking the flow of air is arranged on one side surface on the shorter side of the intake fan side passage 42 and the exhaust fan side passage 43. The passage air blocking member 46 may be, for example, a curtain curtain suspended from the ceiling 30. On the other hand, the other side surface 47 on the shorter side of the intake fan side passage 42 and the exhaust fan side passage 43 is open (hereinafter, referred to as "open side surface 47").

  As described above, in the plant cultivation system 100 according to the present embodiment, the intake fan side passage 42 and the exhaust fan side passage 43 are formed by the cultivation rack 24, the upper air blocking member 44, the lower air blocking member 45, and the passage air blocking member 46. It is formed. The intake fan side passage 42 and the exhaust fan side passage 43 are semi-closed spaces in which only the open side surfaces 47 are open. As shown in FIGS. 1 and 2, the intake fan side passages 42 and the exhaust fan side passages 43 are alternately arranged in the width direction of the front side wall 32 and the rear side wall 33.

  FIG. 4 is a schematic plan view for explaining the air flow in the plant cultivation system 100 according to the present embodiment. FIG. 5 is an AA schematic cross-sectional view of the plant cultivation system 100 shown in FIG.

  In the plant cultivation system 100, when the intake fan 40 and the exhaust fan 41 are operated, the air in the intake fan side passage 42 is sucked into the cultivation space 20 by the intake fan 40 as shown by an arrow AF in FIGS. 4 and 5. Moreover, the air in the cultivation space 20 is discharged to the exhaust fan side passage 43 by the exhaust fan 41. This causes a pressure difference between the exhaust fan side passage 43 and the intake fan side passage 42. That is, the pressure in the exhaust fan side passage 43 becomes higher than that in the intake fan side passage 42. Due to this pressure difference, as shown in FIG. 4, an airflow is generated which flows from the exhaust fan side passage 43 to the intake fan side passage 42 through the open side surface 47.

  Due to the heat generation of the LED light source 15 installed in the cultivation shelf 10 and the evaporation from the plants 22, the airflow generated in the exhaust fan side passage 43 has a higher temperature and humidity than the airflow generated in the intake fan side passage 42. Therefore, the airflow generated in the exhaust fan side passage 43 is referred to as "warm airflow HA", and the airflow generated in the intake fan side passage 42 is referred to as "cold airflow CA".

  In the plant cultivation system 100 according to the present embodiment, the warm air flow HA and the cold air flow CA are generated, so that air circulation can be generated in the cultivation room 23. Since the bias of the temperature / humidity environment in the cultivation space 20 is suppressed, the environment in the cultivation room 23 can be appropriately maintained.

Here, a suitable relationship between the sizes of the cultivation room 23 and the cultivation rack 24 will be shown. As shown in FIG. 2, the height from the floor 31 to the ceiling 30 in the cultivation room 23 is La (m), and the height of the cultivation rack 24 is Lb (m). In addition, as shown in FIG. 1, the length of the cultivation rack 24 in the longitudinal direction is Lc (m), and the arrangement interval of the cultivation rack 24 is Ld (m). At this time, it is desirable that La, Lb, Lc, and Ld satisfy the following conditional expressions (1) to (3).
0.85 ≦ Lb / La ≦ 1.0 (1)
0.5 ≦ Lc / La ≦ 5.0 (2)
0.1 ≦ Ld / La ≦ 0.3 (3)

The space volume Lv of the intake fan side passage 42 and the exhaust fan side passage 43 is Lv = La × Lc × Ld (m ³ ). When the total air volume of the intake fan 40 or the exhaust fan 41 provided on the side surface in the longitudinal direction of one cultivation rack 24 is Ft (m ³ / sec), Ft preferably satisfies the following conditional expression (4). .
Lv / 50 ≦ Ft ≦ Lv / 5 (4)
Here, in the present embodiment, the lower limit value (Lv / 50) and the upper limit value (Lv / 5) of Ft are intake fans in which air corresponding to 1/2 of the space volume Lv is arranged on the side surface of the cultivation rack 24. 40 (or the exhaust fan 41) so that the inside of the cultivation rack 24 is blown (or blown outside), the arrangement interval Ld of the cultivation rack 24 and the wind speed required inside the cultivation rack 24 (cultivation shelf 10). Can be determined based on.

  The plant cultivation system 100 according to the present embodiment further includes an air conditioning facility 50 arranged outside the cultivation room 23. As shown in FIG. 4, this air conditioning equipment 50 sucks a part of the air in the exhaust fan side passage 43 from the intake port 50a provided in the front side wall 32, adjusts the temperature and humidity of the air, and adjusts the temperature. The rear air is sent into the intake fan side passage 42 from the exhaust port 50b provided in the front side wall 32. The warm airflow HA of the exhaust fan side passage 43 that has not been sucked in through the intake port 50a of the air conditioning equipment 50 is mixed with the adjusted air sent out through the exhaust port 50b of the air conditioning equipment 50, and is adjacent to the cultivation rack 24. Flows into the intake fan side passage 42. By providing the air conditioning equipment 50 in this way, the temperature and humidity of the cold airflow CA can be adjusted, so that the environment in the cultivation room 23 can be further favorably maintained.

  FIG. 6 is a schematic cross-sectional view of the exhaust fan side passage 43. FIG. 7 is a schematic cross-sectional view of the intake fan side passage 42. As shown in FIG. 6, as the air in the exhaust fan side passage 43 is sucked in through the intake port 50a of the air conditioning equipment 50, a vertical flow of the warm airflow HA is generated in the exhaust fan side passage 43. Further, as shown in FIG. 7, air is sent from the exhaust port 50b of the air conditioning equipment 50 to the intake fan side passage 42, so that a vertical flow of the cold airflow CA is generated in the intake fan side passage 42. The flows of the warm airflow HA and the cold airflow CA shown in FIGS. 6 and 7 are examples, and the flow of the warm airflow HA and the cold airflow CA is changed by changing the intake direction at the intake port 50a and the exhaust direction at the exhaust port 50b. Can be changed.

  FIG. 8 is a schematic plan view for explaining the flow of air in the plant cultivation system 100 according to this embodiment. As shown in FIG. 8, in order to control the amount of the warm airflow HA flowing from the exhaust fan side passage 43 to the intake fan side passage 42, between the end portion of the front side wall 32 of the cultivation rack 24 and the front side wall 32, The air blocking member 80 may be arranged. The air blocking member 80 may be, for example, a curtain curtain suspended from the ceiling 30. The height of the air blocking member 80 may be adjustable. In this case, by adjusting the height of the air blocking member 80, the amount of the warm airflow HA flowing from the exhaust fan side passage 43 into the intake fan side passage 42 can be controlled appropriately.

  In the plant cultivation system 100, the intake fan 40 and the exhaust fan 41 may be configured so that the air volume can be adjusted according to the vertical position of the cultivation shelf 10 where they are arranged. The details will be described below.

  FIG. 9 is a schematic cross-sectional view for explaining the first operation mode of the intake fan 40 and the exhaust fan 41. In the first operation mode, the air volumes of the intake fan 40 and the exhaust fan 41 arranged on the cultivation shelf 10 located above are increased, and the intake fan 40 and the exhaust fan 41 arranged on the cultivation shelf 10 located below are increased. Reduce the air flow. In FIG. 9, the thickness of the arrow AF indicates the air volume of the intake fan 40 and the exhaust fan 41. As shown in FIG. 9, in the first operation mode, the air volumes of the intake fan 40 and the exhaust fan 41 decrease from the upper cultivation shelf 10 to the lower cultivation shelf 10. When the intake fan 40 and the exhaust fan 41 are operated in this way, in the intake fan side passage 42, the upper pressure becomes relatively lower than the lower pressure, so that an upflow of the cool airflow CA occurs. On the other hand, in the exhaust fan side passage 43, the upper pressure becomes relatively higher than the lower pressure, so that the downflow of the warm air HA occurs.

  FIG. 10 is a schematic cross-sectional view for explaining the second operation mode of the intake fan 40 and the exhaust fan 41. In the second operation mode, the air flow rates of the intake fan 40 and the exhaust fan 41 arranged on the cultivation shelf 10 located above are reduced, and the intake fan 40 and the exhaust fan 41 arranged on the cultivation shelf 10 located below are reduced. Increase the air volume of. In FIG. 10, the thickness of the arrow AF indicates the air volume of the intake fan 40 and the exhaust fan 41. As shown in FIG. 10, in the second operation mode, the air volumes of the intake fan 40 and the exhaust fan 41 increase from the upper cultivation shelf 10 to the lower cultivation shelf 10. When the intake fan 40 and the exhaust fan 41 are operated in this manner, in the intake fan side passage 42, the upper pressure becomes relatively higher than the lower pressure, so that the downflow of the cool airflow CA occurs. On the other hand, in the exhaust fan side passage 43, the upward pressure is relatively lower than the downward pressure, so that an upward airflow of the warm airflow HA is generated.

  As described above, according to the plant cultivation system 100 according to the present embodiment, by controlling the air volumes of the intake fan and the exhaust fan, an upflow or a downflow is generated in the intake fan side passage 42 and the exhaust fan side passage 43. Can be generated. With this, the temperature and humidity in the height direction of the intake fan side passage 42 and the exhaust fan side passage 43 can be adjusted, so that the environment in the cultivation chamber 23 can be further favorably maintained.

  Since the transpiration amount and the like differ depending on the growth state of the plant 22 on each cultivation shelf 10, it is preferable to appropriately switch the first operation mode and the second operation mode to operate the intake fan 40 and the exhaust fan 41. Further, also in each operation mode, the strength of the ascending or descending airflow can be adjusted by controlling the magnitude of the air volume. Further, a sensor for measuring the temperature / humidity environment may be arranged in the cultivation space 20, and the air volumes of the intake fan 40 and the exhaust fan 41 may be controlled based on the detection values of this sensor.

  11 and 12 are views for explaining a plant cultivation system 200 according to another embodiment of the present invention. FIG. 11 is a schematic cross-sectional view of the exhaust fan side passage 43 in the plant cultivation system 200. FIG. 12 is a schematic sectional view of the intake fan side passage 42 in the plant cultivation system 200. The plant cultivation system 200 according to this embodiment is different from the above-described plant cultivation system 100 in the method of intake and exhaust between the air conditioning equipment 50 arranged outside the cultivation room 23 and the cultivation room 23.

  In the plant cultivation system 200 according to the present embodiment, as shown in FIG. 11, an intake duct 60 is provided near the ceiling 30 of the exhaust fan side passage 43 along the exhaust fan side passage 43. Further, as shown in FIG. 12, an exhaust duct 62 is provided near the ceiling 30 of the intake fan side passage 42 along the intake fan side passage 42. The intake duct 60 and the exhaust duct 62 are connected to the air conditioning equipment 50 arranged outside the cultivation room 23.

  FIG. 13 is a schematic perspective view near the ceiling of the intake fan side passage 42 in the plant cultivation system 200. As described above, the exhaust duct 62 is provided near the ceiling of the intake fan side passage 42 along the intake fan side passage 42. As shown in FIG. 13, a plurality of exhaust ports 63 are provided on the lower surface of the exhaust duct 62 at predetermined intervals along the longitudinal direction of the exhaust duct 62. The plurality of exhaust ports 63 are formed so that the hole diameter increases as the flow path distance from the air conditioning equipment 50 increases. An intake duct 60 in which a plurality of intake ports 61 are formed is also provided near the ceiling of the exhaust fan side passage 43.

  As shown in FIG. 11, in the exhaust fan side passage 43, the air in the exhaust fan side passage 43 is sucked from the intake port 61 of the intake duct 60, so that the upward warm air flow HA is generated. Further, as shown in FIG. 12, in the intake fan side passage 42, air is sent from the exhaust port 63 of the exhaust duct 62 to the intake fan side passage 42, so that a downward flow of the cold airflow CA is generated.

  By performing intake / exhaust with the air conditioning equipment 50 via the intake duct 60 and the exhaust duct 62 provided in the ceiling 30 as in the present embodiment, the temperature and humidity in the cultivation room 23 can be adjusted more efficiently. .

  The plant cultivation system 200 according to the present embodiment may be configured so that the opening degrees of the intake port 61 and the exhaust port 63 can be adjusted. In this case, the temperature and humidity in the cultivation room 23 can be adjusted more efficiently.

  The present invention has been described above based on the embodiments. It should be understood by those skilled in the art that this embodiment is an exemplification, and that various modifications can be made to the combinations of the respective constituent elements and the respective processing processes, and that such modifications are within the scope of the present invention. .

  In the plant cultivation system 100 according to the above-described embodiment, the cultivation room 23 has been described as having a rectangular parallelepiped space, but the shape of the cultivation room is not limited to the rectangular parallelepiped shape. The shape of the cultivation room may be, for example, an arc shape in which the central part has a higher ceiling than the side parts, such as a gymnasium. In this case, the number of stages of the cultivation shelves 10 may be different depending on the ceiling height.

  10 cultivation shelf, 15 LED light source, 20 cultivation space, 22 plants, 23 cultivation room, 24 cultivation rack, 26 cultivation unit, 40 intake fan, 41 exhaust fan, 42 intake fan side passage, 43 exhaust fan side passage, 44 upper air Blocking member, 45 lower air blocking member, 46 passage air blocking member, 50 air conditioning equipment, 60 intake duct, 62 exhaust duct, 80 air blocking member, 100,200 plant cultivation system.

Claims (8)

A plant cultivation system in which a plurality of cultivation racks are arranged in a cultivation room,
Each said cultivation rack comprises a plurality of cultivation shelves in the vertical direction,
Reflectors are arranged on the four sides of each of the cultivation shelves, and the space surrounded by the reflectors is a cultivation space for cultivating plants,
One of the longitudinal sides of each of the cultivation shelves is provided with a plurality of intake fans for sucking external air into the cultivation space,
On the other longitudinal side surface of each of the cultivation shelves, a plurality of exhaust fans for exhausting the air in the cultivation space to the outside are provided,
The plurality of cultivation racks, the side surfaces where the intake fan is arranged are opposed to each other, and the side surfaces where the exhaust fan is arranged are opposed to each other, and are arranged in parallel at predetermined intervals,
Between adjacent cultivation racks where the side faces where the intake fans are arranged are opposed to each other, an intake fan side passage that is a partially closed semi-closed space is formed,
Between adjacent cultivation racks where the side faces where the exhaust fans are arranged are opposed to each other, an exhaust fan side passage which is a partially closed semi-closed space is formed,
The air in the intake fan side passage is sucked into the cultivation space by the intake fan, and the air in the cultivation space is discharged to the exhaust fan side passage by the exhaust fan, so that the exhaust fan side passage is A plant cultivation system characterized in that an airflow flowing into the intake fan side passage is generated.   The plant cultivation system according to claim 1, wherein an upper air blocking member for blocking a flow of air is arranged between an uppermost surface of each cultivation rack and a ceiling of the cultivation room.   The plant cultivation system according to claim 1, wherein a lower air blocking member for blocking the flow of air is arranged between the lowermost surface of each of the cultivation racks and the floor of the cultivation room. . A passage air blocking member for blocking the flow of air is arranged on one side surface of the intake fan side passage and the exhaust fan side passage on the shorter side.
The plant cultivation system according to any one of claims 1 to 3, wherein the other side surface on the shorter side of the intake fan side passage and the exhaust fan side passage is opened.   The air-conditioning facility for sucking in the air in the exhaust fan side passage, adjusting the temperature and humidity of the air, and sending the adjusted air into the intake fan side passage. The plant cultivation system according to any one of 1.   6. The intake fan and the exhaust fan are configured such that the air volume can be adjusted according to the vertical position of the cultivation shelf in which they are arranged. Plant cultivation system.   The intake fan and the exhaust fan increase the air volume of the intake fan and the exhaust fan arranged on the cultivation shelf located above, and the intake fan and the exhaust gas arranged on the cultivation shelf located below. The first operation mode for generating an ascending airflow in the intake fan side passage and a descending airflow in the exhaust fan side passage by reducing the air volume of the fan. The plant cultivation system described.   The intake fan and the exhaust fan reduce the air volume of the intake fan and the exhaust fan arranged on the upper cultivation rack, and the intake fan and the exhaust arranged on the lower cultivation shelf. 7. A second operation mode in which a descending air flow is generated in the intake fan side passage and an ascending air flow is generated in the exhaust fan side passage by increasing the air volume of the fan. 7. The plant cultivation system according to 7.

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