JP6279362B2 - Plant cultivation unit and plant cultivation facility - Google Patents

Description

  The present invention relates to a plant cultivation unit and a plant cultivation facility, and more particularly, to a plant cultivation unit and a plant cultivation facility used for cultivating a plant in consideration of the growth environment of the plant.

2. Description of the Related Art Conventionally, plant factories capable of systematically producing plants in a closed or semi-closed space in which the internal environment is controlled are widely known for the purpose of providing safe foods for the year.
In this plant factory, plants are generally grown using solution cultivation using artificial light or natural light as a light source, and the productivity of vegetables and fruits is controlled by controlling the temperature, humidity, carbon dioxide concentration, etc. in the space. It is improving.

For example, Patent Literature 1 discloses a closed space type multi-stage shelf-type seedling raising device, and this seedling raising device mainly includes an artificial light source, an air conditioner, and an automatic irrigation device. The plant can be produced in a plant-growing environment that is not affected by
In addition, drain water generated during cooling is collected by an air conditioner, and resource saving is achieved by using this drain water as raw water for culture solution or diluted water for culture solution.

JP 2002-291349 A

By the way, it is said that optimization of four conditions of carbon dioxide concentration, temperature, humidity, and air flow (wind speed) mainly leads to improvement of vegetable productivity as the optimum air conditioning in vegetable cultivation in a plant factory. .
Specifically, by increasing the carbon dioxide concentration in the space moderately, the photosynthesis rate of the plant can be promoted, and by controlling the temperature and humidity at a certain level, the carbon dioxide absorption efficiency of the plant can be increased. Decrease can be prevented, and carbon dioxide can be efficiently sent to plants by creating a moderate airflow.

Generally, in the internal environment of a plant factory like patent document 1, it becomes easy to become comparatively high temperature, and when it does so, the water | moisture content from the pores of a plant will increase, and a plant will be in a dry state and will cause water stress. As a result, the pores are closed so as not to miss the moisture in the plant, leading to a decrease in carbon dioxide absorption efficiency and a decrease in the amount of photosynthesis, which impedes vegetable productivity. Therefore, plant factories always use an air conditioner to keep the room temperature constant.
However, since it is dehumidified along with the operation of the air conditioner, the humidity is lowered, and a problem that the photosynthesis of plants is hindered due to the decrease in the humidity occurs, leading to a decrease in production. Although there were cases where a humidifier was introduced as a measure to maintain a constant humidity, it was inefficient and costly because dehumidification of the air conditioner and humidification of the humidifier were performed simultaneously. .
Therefore, in plant cultivation including cultivation of a plant factory, a plant cultivation facility capable of providing an environment that leads to improved productivity of vegetables has been desired.

This invention is made | formed in view of said subject, The objective of this invention provides the plant cultivation unit and plant cultivation apparatus which can provide the environment which leads to the productivity improvement of foodstuffs, such as vegetables, in plant cultivation There is to do.
Another object of the present invention is to provide a plant cultivation unit and a plant cultivation apparatus capable of preventing temperature rise and humidity drop particularly in order to optimize air conditioning in an internal environment of a predetermined space such as a plant factory. It is to provide.

According to the plant cultivation unit of the present invention, the subject is a plant cultivation unit comprising a cultivation tray used for cultivating a plant and a cultivation shelf on which the cultivation tray can be placed. In the tray, a medium for growing the plant, a cover member for covering the medium from above, a cover member provided above the cover member, and arranged around the plant in a state planted in the medium. It is solved by containing the humidity control material.
As described above, in the plant cultivation unit, the humidity conditioner is disposed around the plant in the state of being planted in the medium. For example, even if the humidity in the vicinity of the plant has relatively decreased, the humidity conditioner It is possible to humidify the vicinity of the plant by utilizing the moisture absorption / release property.
For example, even when the temperature in the vicinity of the plant has become relatively high, the increase in temperature in the vicinity of the plant can be suppressed by utilizing the heat of vaporization (heat absorption) of water evaporation from the humidity control material.
In addition, since the plant cultivation unit includes a cover member that covers the medium from above, it is possible to prevent the evaporated water from the humidity control material from moving toward the medium side instead of the plant side. In this case, it is possible to prevent the culture solution from penetrating into the humidity control material and reducing the amount of the solution.
As a result, in plant cultivation, a plant cultivation unit capable of providing an environment that leads to improved productivity of foods such as vegetables can be provided.

At this time, a irrigation tube for irrigating the humidity control material accommodated in the cultivation tray is provided, and the irrigation tube may extend along a direction intersecting with the vertical direction of the cultivation tray. .
As described above, since the irrigation tube can be irrigated from the outside to the humidity control material accommodated in the cultivation tray, the humidity control material is placed around the plant in a state of containing moisture, and the humidity control material By using the moisture absorption / release properties of the wood, the vicinity of the plant can be further humidified.
Moreover, since the irrigation tube is extended along the direction which cross | intersects the up-down direction of a cultivation tray, compared with the case where it extends along an up-down direction, it irrigates efficiently the humidity control material in the cultivation tray normally used. be able to.

At this time, the lighting device is provided above the plant and irradiates the plant with light, and the lighting device is disposed in the center of the plant cultivation unit in the width direction of the cultivation tray, and the irrigation tube Is preferably arranged at a position closer to the end than the center of the plant cultivation unit in the width direction.
As mentioned above, since it becomes the structure by which an illuminating device is arrange | positioned at the center part of a plant cultivation unit, the plant provided in the cultivation tray can be irradiated with light comparatively efficiently.
Moreover, since the irrigation tube is disposed at a position close to the end of the plant cultivation unit, there is a degree of freedom in arrangement without interfering with the plant.
Moreover, since the lighting device is provided, in addition to improving the photosynthetic rate of the plant, the moisture release from the humidity control material becomes active due to the sensible heat of the lighting device, and the plant can absorb the released moisture. .

At this time, the illuminating device is preferably composed of a fluorescent lamp.
In general, fluorescent lamps are more frequently used because they can reduce costs when used for a long time such as plant cultivation, but, for example, when the lighting is turned on or in the lighting state as compared with an LED lighting device or the like As the amount of heat released increases, the temperature around the plant increases and the humidity decreases.
Therefore, when using a fluorescent lamp, the effect of suppressing the temperature rise using the humidification utilizing the moisture absorption / release property of the humidity control material and the vaporization heat (heat absorption) of the water evaporation from the humidity control material is further enhanced.

At this time, in the plant cultivation unit used in the space where the air conditioner is provided, the irrigation tube is connected to a pipe forming a flow path of drain water discharged from the air conditioner, and flows from the pipe. The drain water is preferably irrigated to the humidity control material.
As described above, the moisture conditioning material is retained in a state of containing moisture using drain water discharged from the air conditioner, so that moisture dehumidified by an air conditioner such as an air conditioner can be used without waste. And can provide a plant cultivation unit with a balanced water balance.
Further, since humidity adjustment can be easily performed in a form corresponding to the operation of the air conditioner, it is not necessary to have a complicated humidity sensor for adjusting the humidity and a complicated control function associated therewith.

At this time, in the plant cultivation unit used in the space where the air conditioner is provided above the plant, a plurality of the cultivation shelves can be placed with the cultivation tray spaced apart in the vertical direction. The first irrigation tube and the second irrigation tube respectively accommodated in the first cultivation tray placed on the cultivation shelf and the second cultivation tray placed on the lower side of the first cultivation tray Are connected via an intermediate pipe, and the first irrigation tube has an irrigation hole provided on an outer surface, and the drain water flowing from the pipe is supplied to the first humidity control material via the irrigation hole. Irrigation, the remaining drain water flows out to the intermediate pipe, and the second irrigation tube irrigates the remaining drain water flowing from the intermediate pipe to the second humidity control material through the irrigation hole. Good to be.
With the above configuration, the drain water discharged from the air conditioner provided relatively upward flows to the first cultivation tray and the second cultivation tray that are placed on the cultivation shelf in the order of the lower side in order. Since the water is irrigated to the first humidity control material and the second humidity control material, the drain water can be used without waste.
In particular, irrigation efficiency is extremely improved because water is irrigated in order from the first humidity control material that is close to the air conditioner side and where moisture evaporation is active.

At this time, the humidity control material is composed of a humidity control plate material having a holding hole for holding the plant when the plant is planted in the medium, and the irrigation tube is attached to the cultivation tray. It is good to attach so that the said humidity control plate material accommodated may be penetrated.
As mentioned above, it can be set as the structure which suppressed the number of parts by forming the plant holding plate normally utilized in a plant unit from a humidity control material.
Moreover, since the irrigation tube is attached so as to penetrate the humidity control plate material, the working efficiency for irrigating the humidity control plate material is improved.

At this time, the cover member is formed of a waterproof cover sheet having an insertion hole for allowing the plant to pass therethrough when the plant is planted in the medium, and the waterproof cover sheet includes the humidity control plate material. It is good to be attached to the outer surface of the medium side.
With this configuration, in this plant cultivation unit, it is possible to prevent the evaporated water from the humidity control material from moving toward the medium side instead of the plant side. For example, when the medium is a culture solution, the culture solution is conditioned. It is possible to prevent the amount of liquid from penetrating the material side to decrease.

  Moreover, the plant cultivation facility provided with the said plant cultivation unit in the space inside is also realizable.

According to the plant cultivation unit and the plant cultivation apparatus of the present invention, in plant cultivation, it is possible to provide an environment that leads to improved productivity of foods such as vegetables.
In addition, in order to optimize air conditioning in an internal environment of a predetermined space such as a plant factory, it is possible to prevent temperature rise and humidity drop in particular.

It is a schematic perspective view explaining the plant cultivation facility concerning this embodiment. It is a schematic perspective view of the cultivation shelf in which the some cultivation tray was mounted, Comprising: It is explanatory drawing which shows the state by which the plant was planted. It is AA sectional drawing of the cultivation shelf in which the cultivation tray was mounted, Comprising: It is explanatory drawing which shows the state by which the plant was planted. It is a schematic exploded perspective view of a cultivation tray. It is explanatory drawing which shows the flow path of the drain water discharged | emitted from an air conditioning apparatus. It is a general | schematic disassembled perspective view of the cultivation tray which concerns on 2nd Embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
This embodiment is a plant cultivation facility comprising a closed space in which an air conditioner and a lighting device are installed, and is provided between a humidity control plate material that holds plants, a culture medium, and a humidity control plate material and a culture medium And a cultivation tray that houses the waterproof cover, and drains water discharged from the air conditioner to the humidity control plate material through the irrigation tube, thereby utilizing the moisture absorption and release characteristics of the humidity control plate material. The present invention relates to an invention of a plant cultivation facility characterized in that the surroundings of a plant are humidified and the temperature rise around the plant is suppressed by utilizing the heat of vaporization (heat absorption) of moisture evaporation of a humidity control plate material.
In the plant cultivation facility, the direction in which the user enters and exits from the door provided on the side wall surface of the facility is the front-rear direction, and the width direction orthogonal to the front-rear direction in the facility is the left-right direction.

As shown in FIG. 1, the plant cultivation facility P of the present embodiment is composed of a building unit for producing plants in a closed space in which the internal environment is controlled, and is installed in an upper portion of a predetermined inner wall surface inside the facility. The air conditioner 1 to be performed, a pair of cultivation shelves 10 installed at positions where the air conditioner 1 is sandwiched in the left-right width direction inside the facility, and an interval in the vertical direction on the cultivation shelf 10 as shown in FIG. A plurality of illuminating devices 20 and a cultivation tray 30 that are placed on the cultivation shelf 10 at intervals in the vertical direction and arranged at positions facing the illuminating device 20 are mainly provided.
In addition, in this embodiment, the plant cultivation unit of a claim is a component accommodated in the cultivation shelf 10, the illuminating device 20, the cultivation tray 30, and the cultivation tray 30, as shown in FIG. Are equivalent to those provided.

The plant cultivation facility P is composed of a relatively small building unit having a substantially rectangular parallelepiped shape. However, the facility may be further reduced in size such as a showcase type or a panel type, and is configured by a large-scale facility. May be. Moreover, it is good also as a structure which cultivates a plant using sunlight and artificial light together in a semi-closed space besides cultivating a plant by completely artificial light in a closed space.
In addition, as shown in FIG. 1, the solar power generation device is installed in the top wall upper surface of the plant cultivation facility P. As shown in FIG. A solar power generation device is a device that converts solar energy into electrical energy, and is connected to a power conditioner (not shown). The power conditioner converts DC power generated in the solar power generation device into AC power. For example, it is used as electric power for the air conditioner 1, the lighting device 20, and the like.

As shown in FIG. 1, the air conditioner 1 is a wall-hanging air conditioner for adjusting temperature and humidity as an air conditioner in the plant cultivation facility P. The air conditioner 1 mainly adjusts the temperature in the facility by a cooling function. Used to keep it constant. On the other hand, as a result of condensation occurring inside the air conditioner 1 by the cooling function and the drain water being discharged, the humidity in the facility is relatively lowered.
The drain water discharged from the air conditioner 1 flows out toward the cultivation tray 30 through a pipe forming the drain water flow path, and is finally discharged to the waste liquid tank. Details will be described later.

As shown in FIG. 1, the cultivation shelf 10 is a shelf for placing a plurality of cultivation trays 30 and is installed extending in the front-rear direction of the plant cultivation facility P, and has a predetermined interval in the left-right width direction. Two units are arranged with a gap.
The cultivation shelf 10 is installed at a lower position than the air conditioner 1 and is disposed at a position where the air conditioner 1 is sandwiched in the left-right width direction.
As shown in FIG. 2, the cultivation shelf 10 includes a tray receiving portion 11 that can stack the cultivation trays 30 at a predetermined interval in the vertical direction. A total of six cultivation trays 30 are placed, three in the front and rear direction.
In addition, on the cultivation shelf 10, the cultivation tray 30 is divided | segmented into the up-down direction according to the cultivation period of a plant, for example, and is mounted. The cultivation tray 30 in which plants in the germination period are planted is placed on the lower side of the cultivation shelf 10, and the cultivation tray 30 in which plants in the fixed planting period are planted is placed on the upper stage. ing.

As shown in FIG. 2, the lighting device 20 is a fluorescent lamp for irradiating light to the plants in the cultivation tray 30, and is installed on the bottom side of the tray receiving portion 11 and the top wall portion 12 of the cultivation shelf 10. , Extending along the longitudinal direction of the cultivation shelf 10. And it arrange | positions in the position facing a plant in an up-down direction.
Specifically, as shown in FIG. 3, the lighting device 20 is disposed at a position closer to the center portion than the end portion in the width direction of the cultivation tray 30.
The lighting device 20 may employ a known lighting fixture such as an LED lighting device in addition to a fluorescent lamp.

The cultivation tray 30 is a box-shaped resin container used for cultivating plants, as shown in FIGS. 2 and 3, and the culture medium 40 and the culture medium 40 are substantially omitted from above in the cultivation tray 30. A waterproof cover sheet 50 that covers the entire surface, a humidity control plate material 60 that is provided above the waterproof cover sheet 50 and holds the plant planted in the culture medium 40, and irrigation for irrigating the humidity control plate material 60 A tube 70 is accommodated.
And the substantially circular tube attachment hole 31 which can penetrate the irrigation tube 70 and can be attached is formed in the both-sides wall surface of the elongate direction of the cultivation tray 30 as shown in FIG.

As shown in FIGS. 3 and 4, the medium 40 is a liquid medium for growing plants, and is provided in a state where a certain amount of culture solution is secured.
More specifically, in the plant cultivation facility P, as shown in FIG. 2, a solution tank, a solution circulation pump, and a solution circulation pipe are provided in the cultivation shelf 10. It is controlled so that the culture solution flows from the solution tank into the cultivation tray 30 at the timing. The culture solution that has become unnecessary is discharged to a waste liquid tank through a drain pipe.
In addition, the culture medium 40 may be composed of a solid culture medium, a two-phase culture medium in which a liquid and a solid are combined, in addition to a liquid culture medium.
In addition, the circulation method of the culture solution used for the culture medium 40 may be controlled manually in addition to automatic control.

The waterproof cover sheet 50 corresponds to a cover member, and as shown in FIGS. 3 and 4, is a substantially rectangular sheet for preventing water penetration between the culture medium 40 and the humidity control plate material 60, For example, it is a sheet-like or film-like cover formed from a vinyl chloride resin-based material.
The waterproof cover sheet 50 is affixed to the bottom surface side of the humidity control plate material 60 so as to face almost the entire surface, and a tube inserted through the outer surface of the waterproof cover sheet 50 from the upper surface side toward the bottom surface side. A plurality of holes 51 are formed.
The tube insertion hole 51 is a substantially circular hole for allowing a plant to pass from the humidity control plate material 60 side to the culture medium 40 side, and has a predetermined interval in the long and short directions of the waterproof cover sheet 50. A plurality are provided.
The waterproof cover sheet 50 is preferably formed of a waterproof material, but if it is attached so as to be interposed between the culture medium 40 and the humidity control plate member 60, a resin material that does not have waterproof properties. Alternatively, various materials such as paper material, leather material, wooden material, and metal material may be used. Further, the cover member may have a relatively thick plate shape from a relatively thin sheet shape.

The humidity control plate material 60 corresponds to a humidity control material. As shown in FIGS. 3 and 4, the humidity control plate material 60 is a substantially flat plate for holding a plant in a state of being planted in the culture medium 40, and is a moisture absorbing / releasing property. It is formed from the humidity control material which has.
The humidity control plate material 60 is formed to be slightly narrower than the internal space of the cultivation tray 30, and has a size that can be accommodated in the cultivation tray 30.
In addition, the humidity control plate material 60 is formed from any one of the humidity control materials of ceramic, zeolite, calcium plate, hygroscopic plastic, and diatomaceous earth as the humidity control material. Therefore, the humidity control material is relatively inexpensive and easy to process, and is suitable for mass production.
A plurality of plant holding holes 61 penetrating from the upper surface side toward the bottom surface side are formed on the outer surface of the humidity control plate material 60.

The plant holding hole 61 is a substantially circular hole for inserting and holding a plant, and a plurality of the plant holding holes 61 are provided at predetermined intervals in the long direction and the short direction of the humidity control plate material 60, and are waterproof. The cover sheet 50 is disposed at a position facing the tube insertion hole 51.
The plurality of plant holding holes 61 are formed at positions closer to one end side than the center part in the width direction of the humidity control plate material 60. And the tube attachment hole 62 for penetrating along the elongate direction of the humidity control plate material 60 and attaching the irrigation tube 70 is formed in the position near the other end side.

The tube attachment hole 62 is a substantially circular hole through which the irrigation tube 70 can be inserted and attached, and extends substantially linearly along the longitudinal direction of the humidity control plate material 60.
The tube attachment hole 62 and the tube attachment hole 31 of the cultivation tray 30 are formed at positions facing each other and are arranged to communicate with each other.

The irrigation tube 70 is a tube for irrigating the humidity control plate material 60 using a plurality of irrigation holes provided on the outer surface, and as shown in FIGS. 3 and 4, the cultivation tray 30 and the humidity control plate Each extends through the material 60.
As shown in FIG. 5, the irrigation tube 70 is connected to a pipe 2 that forms a flow path of drain water discharged from the air conditioner 1 and one end side, and drain water flowing from the pipe 2 is supplied to the humidity control plate material 60. It is configured to irrigate.
The irrigation tube 70 irrigates drainage water flowing from one end side to the humidity control plate material 60 and causes remaining drain water that has not flowed out from the irrigation hole to flow out to the intermediate pipe 3 connected to the other end side. It has a configuration. Details will be described later.

With the above configuration, the plant cultivation facility P uses the drain water discharged from the air conditioner 1 to hold the humidity control plate material 60 in a state of containing moisture. Even when the humidity is relatively lowered, the vicinity of the plant can be humidified using the moisture absorption / release property of the humidity control plate material 60.
And since the water | moisture content dehumidified by the air_conditioning | cooling function of the air conditioner 1 can be utilized without waste, it becomes a system with the water balance taken.

  Further, with the above configuration, even when the temperature in the vicinity of the plant becomes relatively high due to the sensible heat of the lighting device 20, the heat in the vicinity of the plant is utilized by utilizing the heat of vaporization (heat absorption) of moisture evaporation from the humidity control plate material 60. Temperature rise can be suppressed.

  Further, with the above configuration, the plant cultivation facility P includes the waterproof cover sheet 50 that covers the culture medium 40 from above, so that the evaporated water from the humidity control plate material 60 is directed toward the culture medium 40 instead of the plant. Can be suppressed. And it can also suppress that the culture solution of the culture medium 40 permeates into the humidity control plate material 60 side and the amount of culture solution decreases.

<Watering method using drain water>
Next, a method for irrigating the cultivation trays 30b and 30c on the lower side in order from the cultivation tray 30a located on the upper stage of the cultivation shelf 10 using drain water discharged from the air conditioner 1 will be described with reference to FIG. .

First, the pipe 2 and the intermediate pipe 3 forming the drain water flow path will be described.
As shown in FIG. 5, one end side of the pipe 2 is connected to the air conditioner 1, and the other end side is connected to the irrigation tube 70 a in the cultivation tray 30 a on the upper stage, so that drain water discharged from the air conditioner 1 is discharged. It becomes piping for making it flow out to the irrigation tube 70a side.
The intermediate pipe 3 has one end side connected to the irrigation tube 70a in the upper cultivation tray 30a and the other end side connected to the irrigation tube 70b in the cultivation tray 30b on the lower stage side, and the remaining inflow from the irrigation tube 70a. This is a pipe for draining drain water to the irrigation tube 70b.
In addition, the intermediate pipe 3 also has a pipe that branches and extends in the middle from the one end side to the other end side, and in that case, one end on the other end side is placed adjacent to the cultivation tray 30a in the same stage. It is connected to the cultivation tray 30a, and the other end on the other end side is similarly connected to the lower cultivation tray 30b.

In the above configuration, as shown in FIG. 5, the drain water discharged from the air conditioner 1 is firstly an irrigation tube located at the upper stage of each cultivation shelf 10 through a filter 4 provided at a branch point of the pipe 2. It flows out toward 70a.
The drain water that has flowed into the irrigation tube 70 a flows out to the humidity control plate material 60 a through the irrigation hole of the irrigation tube 70 a, and the remaining water amount flows toward the intermediate pipe 3.
In addition, the humidity control plate material 60a is hold | maintained in the state containing the water | moisture content by absorbing drain water. Therefore, when the humidity around the plant is reduced by the dehumidification of the air conditioner 1, the vicinity of the plant can be humidified by releasing the moisture from the humidity control plate material 60a containing moisture. Further, when the temperature around the plant rises due to the sensible heat of the lighting device 20, the temperature rise near the plant can be suppressed by using the heat of vaporization (heat absorption) of water evaporation from the humidity control plate material 60 a.

And the drain water which flowed into the intermediate | middle piping 3 is divided into the cultivation tray 30a side mounted in the same stage via a branch point, and the cultivation tray 30b side in a lower stage side, and predetermined amount of water flows out, respectively. .
As described above, as shown in FIG. 5, drain water flows out from the upper cultivation tray 30a to the lower cultivation trays 30b and 30c in order, and finally the remaining drain water is discharged to the waste liquid tank. It will be.

With the above configuration, drain water discharged from the air conditioner 1 provided above flows in the order downward to the cultivation trays 30a, 30b, and 30c placed on the cultivation shelf 10, and each humidity control plate Since water is irrigated to the materials 60a, 60b and 60c, drain water can be used without waste.
In particular, since the water is irrigated sequentially from the humidity control plate material 60a near the air conditioner 1 side where moisture evaporation is active, the irrigation efficiency is extremely improved.

<Second embodiment of cultivation tray>
Next, 2nd Example of a cultivation tray is described based on FIG.
In addition, in the following description, the description which overlaps with the cultivation tray 30 mentioned above is abbreviate | omitted.
Inside the cultivation tray 130 according to the second embodiment, a culture medium 140, a waterproof cover sheet 150, a humidity control plate material 160 that holds plants, and a pair of irrigation tubes 170 are accommodated.
As shown in FIG. 6, substantially circular tube attachment holes 131 that can be attached by penetrating a pair of irrigation tubes 170 are formed on both side walls in the longitudinal direction of the cultivation tray 130, respectively.

The pair of irrigation tubes 170 are arranged at different ends from each other at positions closer to the end than the center in the width direction of the cultivation tray 130.
In addition, the irrigation tube 170 is placed on the upper surface of the humidity control plate material 160 and is attached and fixed to the tube attachment hole 131 of the cultivation tray 130.
As described above, since the humidity control plate material 160 is arranged so as to be sandwiched between the pair of irrigation tubes 170, when drain water flows out from each of the irrigation tubes 170, It is possible to efficiently infiltrate drain water from both ends toward the center. And since the humidity-control plate material 160 will be in the state containing water | moisture content over the whole, a humidification effect and a temperature suppression effect can be exhibited efficiently.

  As shown in FIG. 6, the irrigation tube 170 is placed on the upper surface of the humidity control plate material 160. However, the irrigation tube 170 is not limited to this, and faces the outside in the width direction with respect to the humidity control plate material 160. It may be arrange | positioned in this way and may be accommodated in the cultivation tray 130, and may be arrange | positioned a little above the humidity control plate material 160. FIG.

<Other embodiments>
In the plant cultivation facility P of the above-described embodiment, as shown in FIG. 5, the humidity control plate material 60 retains the moisture-containing state using the drain water, but is limited to the use of the drain water. Alternatively, it may be configured to use water supplied from the outside, or to use external water and drain water in combination.

  Moreover, in the said embodiment, as shown in FIG. 4, the humidity control plate material 60 which has humidity control property is formed by forming the plate holding a plant from a humidity control material, However, It is limited to this. It may be comprised from the plant holding plate normally used in a plant factory, and the separate humidity control material.

Moreover, in the said embodiment, as shown in FIG. 4, although the irrigation tube 70 is extended along the elongate direction of the cultivation tray 30, ie, the direction orthogonal to the up-down direction of the cultivation tray 30, it is limited to this. It can be appropriately changed without any change.
For example, the irrigation tube 70 should just extend along the direction which cross | intersects the up-down direction of the cultivation tray 30, and may extend along the up-down direction of the cultivation tray 30.

  Moreover, in the said embodiment, as shown to FIG. 4, FIG. 6, although the irrigation tubes 70 and 170 are attached to the tube attachment holes 31 and 131 of the cultivation trays 30 and 130, it is not limited to this. Further, it may extend so as to pass above the cultivation trays 30 and 130.

Moreover, in the said embodiment, as shown in FIG. 5, although each moisture-control plate material 60 is irrigated according to the amount of drain water discharged | emitted automatically from the air conditioner 1, it is separately provided with a flow meter (flow rate). A sensor and a valve for opening and closing the pipe may be provided at predetermined positions.
In this way, the valve can be opened and closed while the flow rate of the drain water at a predetermined position is measured with a flow meter, and the valve should be closed in advance at locations where drain water supply is not required. You can also.
Furthermore, it is good also as a structure provided with the control controller connected with the said flow meter and the said valve | bulb. The controller can control the opening / closing operation of the valve by receiving a data signal based on the measurement result from the flow meter and transmitting a data signal for executing the opening / closing operation of the valve based on the data signal to the valve. It becomes possible. If it does in this way, supply of drain water will be managed more efficiently.

In the present embodiment, the plant cultivation unit and the plant cultivation facility according to the present invention have been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.
In particular, the constituent elements accommodated in the cultivation tray 30 and the arrangement of the constituent elements described in the above embodiment are merely examples, and do not limit the present invention.

P Plant cultivation facility 1 Air conditioner 2 Pipe 3 Intermediate pipe 4 Filter 10 Cultivation shelf 11 Tray receiving part 12 Top wall 20 Lighting device 30, 130 Cultivation tray 30a, 30b, 30c Cultivation tray 31, 131 Tube attachment hole 40, 140 Medium 50 , 150 Waterproof cover sheet 51 Plant insertion hole 60, 160 Humidity control plate material 60a, 60b, 60c Humidity control plate material 61 Plant holding hole 62 Tube mounting hole 70, 170 Irrigation tube 70a, 70b, 70c Irrigation tube

Claims (9)

A plant cultivation unit comprising a cultivation tray used for cultivating plants, and a cultivation shelf on which the cultivation tray can be placed,
In the cultivation tray,
A medium for growing the plant;
A cover member covering the medium from above;
A plant cultivation unit comprising a humidity control material provided above the cover member and disposed around the plant in a state of being planted in the medium. An irrigation tube for irrigating the humidity control material accommodated in the cultivation tray;
2. The plant cultivation unit according to claim 1, wherein the irrigation tube extends along a direction intersecting with a vertical direction of the cultivation tray. Provided above the plant, comprising a lighting device that irradiates light to the plant,
The lighting device is disposed in the center of the plant cultivation unit in the width direction of the cultivation tray,
The said irrigation tube is arrange | positioned in the position close | similar to an edge part rather than the center part of the said plant cultivation unit in the said width direction.   4. The plant cultivation unit according to claim 3, wherein the lighting device is a fluorescent lamp. In the plant cultivation unit used in the space where the air conditioner is provided,
The irrigation tube is connected to a pipe that forms a flow path of drain water discharged from the air conditioner, and irrigates the humidity control material with the drain water flowing from the pipe. The plant cultivation unit according to any one of 2 to 4. In the plant cultivation unit used in the space where the air conditioner is provided above the plant,
The cultivation shelf can be placed a plurality of the cultivation trays at intervals in the vertical direction,
A first irrigation tube and a second irrigation tube respectively accommodated in a first cultivation tray placed on the cultivation shelf and a second cultivation tray placed on the lower side of the first cultivation tray; Is connected via an intermediate pipe,
The first irrigation tube has an irrigation hole provided on an outer surface, irrigates the drain water flowing in from the pipe to the first humidity control material through the irrigation hole, and removes the remaining drain water. Let it flow into the intermediate pipe,
6. The plant cultivation unit according to claim 5, wherein the second irrigation tube irrigates the remaining drain water flowing from the intermediate pipe to the second humidity control material through an irrigation hole. The humidity control material is a humidity control plate material having a holding hole for holding the plant when the plant is planted in the medium.
The plant cultivation unit according to any one of claims 2 to 6, wherein the irrigation tube is attached so as to penetrate the humidity control plate material housed in the cultivation tray. The cover member comprises a waterproof cover sheet having an insertion hole for inserting the plant when the plant is planted in the medium.
The plant cultivation unit according to claim 7, wherein the waterproof cover sheet is attached to an outer surface of the humidity control plate material on the medium side. A plant cultivation facility comprising the plant cultivation unit according to claim 1 inside the space.

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