Fruit cultivation components, fruit cultivation systems and fruit cultivation methods using the same.

Abstract

The present invention provides a fruit cultivation component, a fruit cultivation system, and a fruit cultivation method that can locally and efficiently regulate the environment surrounding the fruit, while also reducing the amount of work required. [Solution] A fruit cultivation member used for cultivating fruit, comprising a surrounding portion that surrounds the fruit, and an air pipe formed to allow air to flow through the inside and passing through the surrounding portion, wherein the air pipe has at least two recirculation portions for circulating the air flowing inside back into the surrounding portion.

Description

Technical Field

[0001] The present invention relates to a fruit cultivation member used for cultivating fruits by adjusting the surrounding environment of the fruits, a fruit cultivation system using the same, and a fruit cultivation method using the system.

Background Art

[0002] In order to cultivate fruits such as grapes and ship them as products, it is necessary to ensure a certain level of quality. The quality of fruits is greatly affected by the surrounding environment including climate, soil, and pests. Therefore, consideration for the surrounding environment is essential for cultivating high-quality fruits. If this consideration for the surrounding environment is insufficient, various damages such as stunted growth and pests will occur. One of the phenomena caused by such damages is fruit cracking.

[0003] Fruit cracking refers to the phenomenon where fruits crack, and it may also be called actual cracking. Fruit cracking can occur due to pests, overcrowding of fruit grains, etc., but an increase in the moisture inside the fruit grains due to rainfall, etc., is one of the major causes. When the moisture inside the fruit grains increases due to water absorption during the ripening period, it is considered that the fruit skin ruptures because it cannot withstand the turgor pressure. This increase in the moisture inside the fruit grains occurs not only due to excessive soil moisture but also due to high air humidity, and there is also an opinion that the latter has a great influence on the occurrence of fruit cracking. Fruit cracking also occurs in grapes, and abnormal weather in recent years around July to September, which is the ripening period of grapes, may increase the fruit cracking damage of grapes, so urgent countermeasures are desired.

[0004] As described above, since high air humidity is cited as one of the factors of fruit cracking, it is expected that fruit cracking can be suppressed by controlling the humidity. However, even when cultivating grapes in a greenhouse such as a vinyl house to control the humidity, it is difficult to control the humidity of the entire greenhouse due to economic problems. Therefore, a humidity control technology considering the economic aspect has been demanded.

[0005] As such a humidity control technology, the present inventors have proposed in Patent Document 1 a fruit cultivation system that can efficiently adjust the environment surrounding the fruit to make it suitable for fruit cultivation, thereby suppressing damage such as fruit cracking.

[0006] In the fruit cultivation system described in Patent Document 1, the environment surrounding the fruit is locally and efficiently regulated by circulating air with controlled humidity and temperature through the covering portion that encloses the fruit. The air regulated by the air conditioning unit circulates through a circulation pipe, flows to the covering portion via a discharge tube connected to the circulation pipe and the covering portion, and returns to the circulation pipe via a receiving tube connected to the covering portion and the circulation pipe. This makes it possible to suppress damage such as fruit cracking at low cost. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 7076859 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, in the fruit cultivation system described in Patent Document 1, a covering section, a delivery tube, and a receiving tube must be prepared for each fruit, and each fruit must be covered with the covering section, with the delivery tube and receiving tube inserted into each covering section. Therefore, the installation process may be time-consuming.

[0009] The present invention has been made in accordance with the circumstances described above, and the object of the present invention is to provide a fruit cultivation component, a fruit cultivation system, and a fruit cultivation method that can locally and efficiently adjust the environment surrounding the fruit, and reduce the amount of work required. [Means for solving the problem]

[0010] The inventors of this invention have conducted extensive research to solve the above problems and have found that the following invention is suitable for the above purpose, leading to the present invention.

[0011] In other words, the present invention relates to the following invention. <1> A fruit cultivation member used for cultivating fruit, comprising: a surrounding portion that surrounds the fruit; and an air pipe formed to allow air to flow through it and penetrating the surrounding portion, wherein the air pipe has at least two recirculation portions for circulating the air flowing inside back into the surrounding portion. <2> The aforementioned recirculation section is composed of a recirculation pipe that penetrates the side of the air piping. <1> Fruit cultivation components as described above. <3> The surrounding portion is capable of surrounding multiple fruits. <1> or <2> Fruit cultivation components as described above. <4> The surrounding portion comprises a detachable lid portion that forms an opening in the surrounding portion for inserting the fruit inside, and an openable and closable, flexible slit portion that forms a gap extending toward the center from the part where the lid portion is joined, allowing the stem of the fruit to be inserted and moved. <1> from <3> A fruit cultivation component as described in any of the following. <5> The air piping is positioned near the surface in the surrounding portion that faces the surface having the slit portion. <4> Fruit cultivation components as described above. <6> The surrounding portion is made of a rigid material. <1> from <5> A fruit cultivation component as described in any of the following. <7> <1> from <6> A fruit cultivation system using a fruit cultivation component as described in any of the above, comprising at least an air conditioning unit for adjusting the humidity of the air, a component connecting unit formed by connecting the fruit cultivation components, and a circulation component pipe connected to the air conditioning unit and the component connecting unit, which guides the air regulated by the air conditioning unit to the component connecting unit, wherein the air conditioning unit, the circulation component pipe and the component connecting unit form a circulation path. <8> A fruit cultivation system comprising: an air conditioning unit for adjusting the humidity of the air; a fruit cultivation member comprising a surrounding unit for surrounding the fruit; an air pipe penetrating the surrounding unit; and a circulation component pipe connected to the air conditioning unit and the air pipe to form a circulation path for circulating the air regulated by the air conditioning unit, wherein the air pipe has at least two circulation sections for circulating the air flowing inside to the surrounding unit, each of the surrounding units, and the surrounding unit has an openable and closable insertion section into which the air pipe can be inserted from the side of the air pipe. <9> The surrounding portion comprises a flexible auxiliary member that is attached to the insertion portion, and the auxiliary member is formed to cover the insertion opening of the insertion portion and to be pressed against the side surface of the air pipe when the air pipe is inserted. <8> The fruit cultivation system described above. <10> The system comprises multiple air conditioning units, and the circulation path includes at least two of the air conditioning units. <7> from <9> A fruit cultivation system as described in any of the following. <11> A fruit cultivation member used for cultivating fruit, wherein the fruit cultivation member comprises a surrounding portion that surrounds the fruit, and the surrounding portion includes an openable and closable insertion portion formed to allow the insertion of an air pipe. <12> The surrounding portion comprises a flexible auxiliary member that is attached to the insertion portion, and the auxiliary member is formed to cover the insertion opening of the insertion portion and to be pressed against the side surface of the air pipe when the air pipe is inserted. <11> Fruit cultivation components as described above. <13> <7> from <10> A method of cultivating fruit using a fruit cultivation system described in any of the following. <14> The aforementioned fruit is a grape. <13> The fruit cultivation method described below. [Effects of the Invention]

[0012] According to the fruit cultivation member, fruit cultivation system, and fruit cultivation method of the present invention, since air is flowing through the surrounding portion that surrounds the fruit, the surrounding environment of the fruit can be locally and efficiently adjusted, and damage such as cracked fruits can be suppressed at low cost. Furthermore, since the air pipe penetrates through the surrounding portion, the installation work can be carried out without requiring a large amount of man-hours.

Brief Description of the Drawings

[0013] [Figure 1] It is a perspective view showing an example of a vinyl greenhouse in which the fruit cultivation system according to the present invention is used (First Embodiment). [Figure 2] It is a plan view showing an example of the fruit cultivation system according to the present invention (First Embodiment). [Figure 3] It is a perspective view showing an example of a fruit cultivation member, (A) is a perspective view in a state where the lid portion is fixed, and (B) is a perspective view in a state where the lid portion is removed. [Figure 4] It is a plan view showing an example of a slit portion. [Figure 5] It is a schematic view showing an example of a circulation pipe penetrating the side surface of an air pipe. [Figure 6] It is a cross-sectional view showing an example of arranging an air pipe around a surrounding portion using a cushion rubber, (A) is a cross-sectional view when the cushion rubber is wound, and (B) is a cross-sectional view when the cushion rubber is installed. [Figure 7] It is a front view showing an example of a main body portion in a state where grape fruits are inserted. [Figure 8] It is a perspective view showing an example of a fruit cultivation member provided with an insertion port. [Figure 9] It is a schematic view showing a modification example of the joining of a circulation pipe and an air pipe. [Figure 10] It is a schematic view showing another modification example of the joining of a circulation pipe and an air pipe. [Figure 11] It is a schematic view showing an example of an air pipe provided with a roof portion. [Figure 12] It is a perspective view showing an example of a vinyl greenhouse in which the fruit cultivation system according to the present invention is used (Second Embodiment). [Figure 13]This is a plan view showing an example (second embodiment) of a fruit cultivation system according to the present invention. [Figure 14] This is a perspective view showing an example of a greenhouse (third embodiment) in which the fruit cultivation system according to the present invention is used. [Figure 15] This is a plan view showing an example of a fruit cultivation system according to the present invention (third embodiment). [Figure 16] This is a plan view showing an example of a fruit cultivation system according to the present invention (fourth embodiment). [Figure 17] This is a perspective view showing an example of the surrounding portion (Fifth Embodiment), where (A) is a perspective view with the lid and plug fastened, and (B) is a perspective view with the lid and plug removed. [Figure 18] The diagram shows an example of the main body with the stopper removed; (A) is a right side view, and (B) is a bottom view. [Figure 19] The cross-sectional view shows an example of the main body with an auxiliary member attached. (A) shows the plug removed, and (B) shows the air pipe inserted and the plug fitted. [Modes for carrying out the invention]

[0014] The present invention relates to a fruit cultivation member comprising a surrounding portion that surrounds a fruit, and an air pipe formed to allow air to flow through its interior and penetrating the surrounding portion, wherein the air pipe has at least two recirculation portions for circulating the air flowing inside back to the surrounding portion.

[0015] Furthermore, the present invention relates to a fruit cultivation system comprising at least an air conditioning unit that adjusts the humidity of the air, a member connecting unit formed by connecting the fruit cultivation members, and a circulation pipe connected to the air conditioning unit and the member connecting unit, which guides the air regulated by the air conditioning unit to the member connecting unit, wherein the air conditioning unit, the circulation pipe, and the member connecting unit form a circulation path.

[0016] The present invention also relates to a fruit cultivation system comprising: an air conditioning unit for adjusting the humidity of the air; a fruit cultivation member comprising a surrounding unit for surrounding the fruit; an air pipe penetrating the surrounding unit; and a circulation component pipe connected to the air conditioning unit and the air pipe to form a circulation path for circulating the air regulated by the air conditioning unit, wherein the air pipe is provided with at least two recirculation sections for circulating the air flowing inside to the surrounding unit, for each surrounding unit, and the surrounding unit is provided with an openable and closable insertion section into which the air pipe can be inserted from the side of the air pipe.

[0017] Furthermore, the present invention relates to a fruit cultivation member comprising a surrounding portion that surrounds a fruit, the surrounding portion having an openable and closable insertion portion formed to allow the insertion of an air pipe.

[0018] Furthermore, the present invention relates to a method for cultivating fruits using the aforementioned fruit cultivation system.

[0019] In this invention, air regulated in the air conditioning unit flows through the circulation pipe to the air piping, and is then sent from the air piping into the surrounding area that encloses the fruit. The air within the surrounding area is then sent back to the air piping, through the circulation pipe, and returned to the air conditioning unit. Therefore, the range of the surrounding environment to be regulated is limited to the air conditioning unit, circulation pipe, air piping, and surrounding area, rather than the entire greenhouse or other facility where the fruit is cultivated. This allows for localized regulation, and the surrounding environment of the fruit can be accurately regulated without the need for large-scale equipment.

[0020] In the fruit cultivation component according to the present invention, the air piping that penetrates the surrounding section circulates the air back into the surrounding section. Therefore, by simply connecting the air piping to the circulation component pipe and connecting the air pipings to each other, air can be supplied to the fruit. Thus, by using the fruit cultivation component, the man-hours required to construct a fruit cultivation system can be reduced. Furthermore, since the surrounding section provides thermal insulation to the air piping within the surrounding section, direct thermal insulation measures for the air piping can be omitted.

[0021] In this invention, the surrounding portion can surround multiple fruits. By surrounding multiple fruits with the surrounding portion, the number of surrounding portions can be reduced compared to surrounding each fruit individually, thereby reducing the labor required for installation. Thus, because the present invention adjusts the surrounding environment locally, accurately, and efficiently, it can suppress fruit damage such as cracking at low cost, and can also reduce the amount of work required to construct the system.

[0022] Embodiments of the present invention will be described below with reference to the drawings. In each drawing, the same components are denoted by the same reference numerals, and their descriptions may be omitted. Furthermore, the numerical values ​​and shapes in the following description are illustrative, and the present invention is not limited to these. In addition, although this embodiment uses the suppression of fruit cracking in grape cultivation as an example, the present invention is not limited to grape cultivation but can be applied to the cultivation of other fruits and is also effective in suppressing damage to fruits other than fruit cracking and promoting fruit development such as coloring.

[0023] An example (first embodiment) of a fruit cultivation system using the fruit cultivation components according to the present invention for grape cultivation in a greenhouse will be described.

[0024] Figure 1 is a perspective view of greenhouse 1, and Figure 2 is a plan view of the fruit cultivation system 2 used in greenhouse 1. In Figure 2, the fruit cultivation system 2 is depicted larger than greenhouse 1 to clearly show the structure of the fruit cultivation system 2 within greenhouse 1, and the proportions of the sizes of the parts may differ from reality. In addition, some parts of the component connection section 50 (see below) are omitted and shown with dashed lines. The greenhouse 1 is a series of interconnected buildings, consisting of five buildings in this embodiment. In Figures 1 and 2, the buildings are arranged horizontally. Each building has an arched ceiling. The width (horizontal length in the horizontal direction in Figure 2) and depth (vertical length in Figure 2) of each building can be set as appropriate. In this embodiment, the width is 4m and the depth is 50m. No plastic sheeting is stretched along the boundaries between the buildings (hereinafter referred to as "building boundaries"), and multiple pillars support the greenhouse 1.

[0025] Grapevine 3 is planted along the boundary of the building using an H-shaped pruning method. That is, multiple main trunks of grapevine 3 grow vertically from the ground located at the boundary of the building, and from there, main branches spread out in an H-shape, extending in the depth direction (up and down direction in Figure 2) of greenhouse 1, as shown in Figure 2. Small branches grow from the main branches, and fruit (grapefruit) grows on each small branch. Note that only the main branches are shown in Figure 2.

[0026] The fruit cultivation system 2 includes an air conditioning unit 80 that adjusts the air to a humidity and temperature suitable for suppressing cracking of grapes 3, a member connecting unit 50 which is formed by connecting fruit cultivation members that surround the grape fruit 3A (see Figure 7 described later), and a circulation pipe that guides the air regulated by the air conditioning unit 80 to the member connecting unit 50. These components form a circulation path, and air circulates in the flow of air conditioning unit 80 → circulation pipe → member connecting unit 50 → circulation pipe → air conditioning unit 80.

[0027] The air conditioning unit 80 is located approximately in the center of the greenhouse 1 and is connected to the circulating pipes arranged within the greenhouse 1. The air conditioning unit 80 is a closed space surrounded by walls, etc., and in order to suppress cracking of the grapes 3, commercially available equipment is used to adjust the air in the space to a predetermined humidity and temperature, and the adjusted air is sent out. Specifically, an air conditioner (hereinafter abbreviated as "air conditioner") and an electric blower that automatically adjust the humidity and temperature to set values ​​are used.

[0028] To suppress fruit cracking, it is best to create a low-humidity, low-temperature environment around the grape fruit 3A. Therefore, an air conditioner is used to adjust the humidity and temperature of the air inside the air conditioning unit 80 to match such an environment. The specific humidity and temperature will be determined appropriately based on experiments and publicly known knowledge in the field, taking into account the grape variety 3, the growth stage of the grape fruit 3A, etc.

[0029] For example, regarding humidity, in the early stages of grape fruit 3A growth, the humidity should be set to be about the same as inside greenhouse 1 (60-70%), and the humidity of the circulating air should be controlled so that the humidity inside the fruit cultivation material becomes 50% or less, 30% or less, and 20% or less (just before harvest) as the fruit grows, preventing cracking. Regarding temperature, since grape fruit 3A begins to change color at around 23°C, it is preferable to control the temperature of the circulating air to be 15°C to 23°C (nighttime temperature). It should also be noted that if grape fruit 3A is severely dried out in the later stages of maturation, it may cause detachment of grapes from the roots, so attention should be paid to phenomena other than cracking. The air regulated by the air conditioner is sent to the circulation pipes connected to the air conditioning unit 80 using electric blowers. The number of electric blowers installed in the air conditioning unit 80 and the amount of air sent out by each electric blower are determined according to the size and structure of the circulation pipes and component connection parts 50 arranged in greenhouse 1. For example, four electric blowers are installed in the air conditioning unit 80, and the air volume delivered by each electric blower is 11.5 m³. 3 Use / minutes.

[0030] Furthermore, simply creating a low-humidity environment is effective in suppressing fruit cracking, so it is also acceptable to adjust only the humidity inside the air conditioning unit 80 with an air conditioner. In this case, a dehumidifier may be used instead of an air conditioner. If humidity (and temperature) can be adjusted by simply supplying air from the air conditioning unit 80, it is also acceptable to use only an electric blower. If the air conditioner has an air purification function, that function may be enabled. To efficiently adjust the air inside the air conditioning unit 80, an air circulator or other air agitator may be used. Instead of constructing the air conditioning unit 80 with commercially available equipment, a dedicated device may be manufactured. The outdoor unit of the air conditioner is placed outside the greenhouse 1, but if it is difficult to place it outside and it must be placed inside, a path should be provided to release the heat discharged from the outdoor unit to the outside of the greenhouse 1. For example, an outlet can be drilled in the ceiling of the greenhouse 1 located above the air conditioning unit 80, and a path can be provided connecting the outdoor unit to the outlet, through which the heat from the outdoor unit can be released.

[0031] Furthermore, while the air conditioning unit 80 is set to ensure that the humidity and temperature within the unit are at values ​​appropriate for preventing fruit cracking, the humidity and temperature within the fruit cultivation components may also be measured, and the air conditioning settings may be adjusted so that these measured values ​​are appropriate for preventing fruit cracking. This allows for more appropriate control of humidity and temperature.

[0032] The circulation system consists of four types of circulation components (first circulation component 10, second circulation component 20, third circulation component 30, and fourth circulation component 40). The circulating pipes are made of rigid polyvinyl chloride pipes (commonly known as PVC pipes). The inner diameter decreases in the order of the first circulating pipe 10, the second circulating pipe 20, the third circulating pipe 30, and the fourth circulating pipe 40. Inside the greenhouse 1, the pipes are connected in this order from the air conditioning unit 80 to the component connection unit 50, and then connected in the reverse order from the component connection unit 50 back to the air conditioning unit 80.

[0033] The connection of different types of circulation pipes is structured such that two of the smaller diameter circulation pipes are connected to one of the larger diameter circulation pipes, that is, a structure that separates or combines them into two. Therefore, from the standpoint of equalizing the amount of circulating air, it is preferable that the cross-sectional area of ​​the smaller diameter circulation pipes is 1 / 2 the cross-sectional area of ​​the larger diameter circulation pipe, and the inner diameter is 1 / √2. However, when using off-the-shelf PVC pipes to reduce costs, the available inner diameters are limited, so at the very least, the inner diameter should not be too large. For example, the inner diameter (nominal diameter) of the first circulation pipe 10 is 75 mm, the inner diameter of the second circulation pipe 20 is 75 mm, the inner diameter of the third circulation pipe 30 is 65 mm, and the inner diameter of the fourth circulation pipe 40 is 65 mm. The circulating pipes are wrapped with a sheet that has heat insulation and heat shielding properties, such as a polyethylene foam light cover, and further wrapped with a light-shielding sheet, such as an aluminum vapor-deposited sheet (a sheet with aluminum vacuum-deposited on its surface). However, if the effects of using these are unnecessary, or if other means are used to address the issue, it is not necessary to wrap them around the circulating pipes. The circulating pipes are positioned at approximately the same height as or slightly lower than the grape fruit 3A, and are fixed to the pipes that form and support the greenhouse 1 using fittings, wires, etc.

[0034] Inside the greenhouse 1, the circulating pipes are arranged symmetrically in four divided regions (hereinafter referred to as "divided regions") centered around the air conditioning unit 80. Below, the arrangement of the circulating pipes in one divided region (the upper right region in Figure 2) will be described. In the other divided regions, the arrangement is symmetrical to that in the divided region described. In one divided region, four main branches of grapevines 3 extend in the depth direction.

[0035] The first circulation component 10 is composed of first circulation component pipes 11 and 12, both of which are connected to the air conditioning unit 80.

[0036] The first circulation pipe 11 is connected to the discharge port of the electric blower in the air conditioning unit 80 and penetrates the wall of the air conditioning unit 80. It is positioned to extend horizontally in the direction of the opening of the greenhouse 1 (left-right direction in Figure 2) to a length of approximately one opening (4m). The end of the first circulation pipe 11 that is not connected to the discharge port of the electric blower is connected to the second circulation pipe 20. Two second circulation pipes 20 (21 and 22) are connected to one first circulation pipe 11. Since the second circulation pipes 21 and 22 are arranged to extend in the same direction as the first circulation pipe 11, the connection between the first circulation pipe 11 and the second circulation pipes 21 and 22 is made by using a combination of L-pipes and T-pipes as fittings, for example. That is, one opening of the L-pipe is connected to the end of the first circulation pipe 11, the other opening is connected to the branch pipe side opening (non-opposing opening) of the T-pipe, and the ends of the second circulation pipes 21 and 22 are connected to the two main pipe side openings (opposing openings) of the T-pipe, respectively. Note that combinations of pipes of other shapes may also be used as fittings.

[0037] The first circulation pipe 12 is connected to the air conditioning unit 80 by fitting its end into a connection port drilled in the wall of the air conditioning unit 80. It extends horizontally in the depth direction of the greenhouse 1 to one end face (the upper part in Figure 2), then bends perpendicularly near the end face toward one end face (side face) in the width direction (the right face in Figure 2), and is positioned to extend along the end face for about one width (4m). The end of the first circulation pipe 12 that is not connected to the air conditioning unit 80 is also connected to the second circulation pipe 20, and the second circulation pipes 23 and 24 are connected to the first circulation pipe 12. Similar to the case of the first circulation pipe 11, the connection between the first circulation pipe 12 and the second circulation pipes 23 and 24 is also made by using, for example, a combination of L-pipe and T-pipe as a fitting.

[0038] As described above, the second circulation component 20 is composed of second circulation component tubes 21, 22, 23 and 24, with second circulation component tubes 21 and 22 connected to the first circulation component tube 11, and second circulation component tubes 23 and 24 connected to the first circulation component tube 12.

[0039] The second circulation pipe 21 is connected to the first circulation pipe 11 via a joint and is positioned to extend horizontally in the direction of the opening of the greenhouse 1 toward one side. The end of the second circulation pipe 21 that is not connected to the first circulation pipe 11 is connected to the third circulation pipe 30. Two third circulation pipes 30 (31 and 32) are connected to one second circulation pipe 21. The connection between the second circulation pipe 21 and the third circulation pipes 31 and 32 is made in the same way as the connection between the first circulation pipe 11 and the second circulation pipes 21 and 22, for example, by using a combination of L-pipes and T-pipes as fittings.

[0040] The second circulation pipe 22 is connected to the first circulation pipe 11 via a joint and is positioned to extend horizontally in the direction of the opening of the greenhouse 1 toward the other side. The end of the second circulation pipe 22 that is not connected to the first circulation pipe 11 is connected to two third circulation pipes 30 in the same manner as the second circulation pipe 21.

[0041] The second circulation pipe 23 is connected to the first circulation pipe 12 via a joint and is connected to the third circulation pipes 33 and 34 in the same arrangement and structure as the second circulation pipe 21. The second circulation pipe 24 is also connected to the first circulation pipe 12 via a joint and is connected to the two third circulation pipes 30 in the same arrangement and structure as the second circulation pipe 22.

[0042] The third circulation system 30 consists of eight circulation systems, including the third circulation systems 31-34, and is connected to the second circulation system 20 in the same arrangement and structure as the second circulation system 20 connected to the first circulation system 10. For example, the third circulation systems 31 and 32 are connected to the second circulation system 21, and the third circulation systems 33 and 34 are connected to the second circulation system 23. The end of the third circulation component 30 that is not connected to the second circulation component 20 is connected to the fourth circulation component 40 in the same arrangement and structure as the second circulation component 20 that is connected to the third circulation component 30. For example, the third circulation component 31 is connected to the fourth circulation component 41 and 42, and the third circulation component 33 is connected to the fourth circulation component 43 and 44.

[0043] The fourth circulation system 40 is composed of 16 circulation systems, including the fourth circulation systems 41-44, and is connected to the third circulation system 30 in the same arrangement and structure as the second circulation system 20 connected to the first circulation system 10 and the third circulation system 30 connected to the second circulation system 20. For example, the fourth circulation systems 41 and 42 are connected to the third circulation system 31, and the fourth circulation systems 43 and 44 are connected to the third circulation system 33.

[0044] The end of the fourth circulation component pipe 40 that is not connected to the third circulation component pipe 30 is connected to the component connection section 50. Specifically, one fourth circulation component pipe 40 is connected to the air piping of one of the fruit cultivation members that make up the component connection section 50, for example, using an L-shaped pipe as a joint. For example, the fourth circulation component pipe 41 is connected to the air piping of the fruit cultivation member 51, and the fourth circulation component pipe 43 is connected to the air piping of the fruit cultivation member 70.

[0045] With this configuration of circulation pipes, the air regulated by the air conditioning unit 80 flows from the air conditioning unit 80 in the following order, as shown by the arrows in Figure 2: first circulation pipe 11, second circulation pipes 21 and 22, four third circulation pipes 30 including third circulation pipes 31 and 32, eight fourth circulation pipes 4 including fourth circulation pipes 41 and 42, and is sent to the component connection unit 50. Further, it is sent from the component connection unit 50 and flows in the following order, returning to the air conditioning unit 80: eight fourth circulation pipes 40 including fourth circulation pipes 43 and 44, four third circulation pipes 30 including third circulation pipes 33 and 34, second circulation pipes 23 and 24, and first circulation pipe 12.

[0046] Valves may be installed near the joints of the circulating pipes to regulate the amount of air flowing through them. The circulating pipes are composed of four types of pipes, but the number of types of pipes is not limited to four and may be other. Different types of circulating pipes are connected by a structure that separates or joins two pipes, but a structure that separates or joins three or more pipes is also acceptable. The inner diameter of each circulating pipe is not limited to those described above and can be changed as appropriate, and all circulating pipes may have the same inner diameter. In addition, the circulating pipes are not limited to PVC pipes but may be made of other materials such as iron pipes.

[0047] The member connection section 50 is constructed by connecting fruit cultivation members that surround the grape fruit 3A. Typically, grape fruit 3A grows on the left and right sides in the direction of extension of the main stem of the grape 3, and the fruit cultivation members constituting the member connection section 50 are arranged to surround the growing grape fruit 3A, so the fruit cultivation members are arranged on the left and right sides in the direction of extension of the main stem (up and down direction in Figure 2). Since the grape fruit 3A growing on one side of a single main stem is surrounded by multiple fruit cultivation members, the multiple connected fruit cultivation members (hereinafter referred to as "connected fruit cultivation members") are arranged parallel to the direction of extension of the main stem. In the fruit cultivation system 2 shown in Figure 2, four main stems extend into one divided region, so eight connected fruit cultivation members are arranged parallel to each other in each divided region.

[0048] An example of a fruit cultivation member constituting the member connecting section 50 is shown in Figure 3. Figure 3 is a perspective view of the fruit cultivation member 51, where Figure 3(A) is a perspective view of the fruit cultivation member 51 with the lid 511b (described later) attached, and Figure 3(B) is a perspective view of the fruit cultivation member 51 with the lid 511b removed. In Figure 3, as indicated by the arrows, the top and bottom of the figure are the "top" and "bottom" of the fruit cultivation member 51, respectively, the front and back are the "front" and "back" of the fruit cultivation member 51, respectively, and the right and left sides (right and left sides of the figure) when viewed from the front are the "right" and "left" of the fruit cultivation member 51, respectively.

[0049] The fruit cultivation member 51 includes a surrounding portion 511 that surrounds the grape fruit 3A and an air pipe 512 formed to allow air to flow through its interior, with the air pipe 512 passing through the surrounding portion 511.

[0050] The surrounding portion 511 has a rectangular parallelepiped shape, and is positioned so that its longitudinal direction (left-right direction in Figure 3) coincides with the extension direction of the main stem of the grape 3. The surrounding portion 511 is made of a rigid material with appropriate rigidity to suppress the dispersion of the force (pressure) of the air being sent inside. A lightweight rigid material is preferably selected to allow for easy installation of the surrounding portion 511. For example, expanded polystyrene is used to make the surrounding portion 511. Expanded polystyrene is a material produced by expanding polystyrene granules (beads) to a certain ratio (for example, about 45 times), and is lightweight and has excellent heat insulation, waterproofing, and shock absorption properties. By making the surrounding portion 511 out of expanded polystyrene, the influence of the outside temperature on the inside of the surrounding portion 511 can be reduced. However, a certain amount of ambient light is necessary for the grape fruit 3A to color, and if the surrounding portion 511 is made of thick polystyrene foam to improve heat insulation, the light-blocking properties will also improve. Therefore, the thickness should be such that light transmission (high visible light transmittance) is also taken into consideration in addition to heat insulation. For example, the surrounding portion 511 can be made using polystyrene foam with a thickness of 3 cm. If light transmission is to be improved, thinner polystyrene foam (for example, 2 cm thick) can be used. In addition, windows or the like can be provided in the surrounding portion 511 to improve light transmission. Conversely, to reduce light transmission, a light-blocking sheet, such as an aluminum vapor-deposited sheet, can be attached to the outer surface of the surrounding portion 511. Furthermore, the rigid material constituting the surrounding portion 511 may be made using various resin materials or resin composite materials other than polystyrene foam. Examples include foamed resins other than polystyrene foam, hollow structure resins, fiber-reinforced plastics (FRP), etc.

[0051] The surrounding portion 511 is equipped with a removable lid portion 511b for inserting grape fruits 3A into its interior. In the fruit cultivation system 2, the front surface of the surrounding portion 511 shown in Figure 3(A) (the front surface in Figure 3) is a flat lid portion 511b, and the remaining surfaces constitute the main body portion 511a. In other words, the main body portion 511a has an open front surface, and the lid portion 511b is attached to the main body portion 511a by joining it to this opening 511d. For example, the lid portion 511b can be made into a double structure with a portion that fits into the opening 511d and a portion that contacts the front surface of the main body portion 511a excluding the opening 511d, thereby joining the lid portion 511b to the main body portion 511a. If removable, adhesive tape or the like may be used to attach the lid portion 511b to the main body portion 511a.

[0052] When inserting the grape fruit 3A into the surrounding portion 511 through the opening 511d, a slit portion 511c is provided in the main body portion 511a to allow the axis 3B of the grape fruit 3A (see Figure 7, described later), which is connected to a twig extending from the main stem of the grape 3, to pass through the interior. The slit portions 511c are arranged on the upper surface (upper surface in Figure 3) of the main body portion 511a shown in Figure 3, according to the number of grape fruits surrounded by the fruit cultivation member 51 (five in the fruit cultivation member 51 shown in Figure 3).

[0053] An example of the slit portion 511c is shown in Figure 4. Figure 4 is an enlarged plan view of one of the slit portions 511c provided on the upper surface of the main body portion 511a. The slit portion 511c is made of a flexible material and fitted onto the upper surface of the main body portion 511a. For example, the slit portion 511c is made of cushion rubber made of natural rubber, polyethylene, polyurethane, etc. The slit portion 511c has a gap 511c-1 that extends from the front surface of the main body portion 511a, which is the surface that joins with the lid portion 511b, toward the center of the upper surface of the main body portion 511a (front-to-back direction in Figure 3). The gap 511c-1 is normally closed, but when a rigid object is inserted, it opens to that extent and grips the object from both sides, allowing the inserted object to move. The end of the gap 511c-1, which extends to near the center of the upper surface of the main body 511a, is connected to a circular hole 511c-2 drilled in the upper surface. The size of the hole 511c-2 is slightly smaller than the stem 3B of the grape fruit 3A. By providing a slit portion 511c of this shape, the stem 3B of the grape fruit 3A can be inserted into the gap 511c-1, moved to the hole 511c-2, and the stem 3B of the grape fruit 3A can be clamped in the hole 511c-2. However, the shape and material of the slit portion 511c are not limited to the above, as long as it is possible to pass the stem 3B of the grape fruit 3A through the inside of the surrounding portion 511.

[0054] The air piping 512 has two recirculation sections 513 and 514 through which air flows and which recirculates the air back to the surrounding section 511. Hereinafter, the part of the air piping 512 excluding the recirculation sections 513 and 514 may be referred to as the main body of the air piping 512. The main body of the air pipe 512 is made of PVC pipe, similar to the circulation components. The component connecting section 50, which is part of the fruit cultivation components, is connected to the fourth circulation components 40. As described later, one air pipe is connected to one fourth circulation component 40, so the inner diameter of the air pipe 512 is the same as the inner diameter of the fourth circulation component 40 (for example, 65 mm). Note that the main body of the air pipe 512 may be made of other materials such as iron pipe, rather than PVC pipe, and does not have to be made of the same material as the circulation components.

[0055] The recirculation sections 513 and 514 are arranged to recirculate the air flowing inside the air pipe 512 to the surrounding section 511. In order to recirculate air over a wide area within the surrounding section 511, the air pipe 512 penetrates the right and left sides (the right side and the left side in Figure 3) of the surrounding section 511, which are opposite each other in the longitudinal direction, and the recirculation sections 513 and 514 are arranged close to the right and left sides, respectively.

[0056] In the air piping 512 of this embodiment, the recirculation sections 513 and 514 are composed of recirculation pipes that penetrate the side surface (the surface extending in the circumferential direction) of the air piping 512. Figure 5 shows examples of recirculation pipes 513a that constitute the recirculation section 513 and 514a that constitute the recirculation section 514, which penetrate the side surface of the air piping 512. Figure 5 shows the internal structure of the air piping 512 when it is cut along a plane that passes through the penetration point and extends in the longitudinal direction (left-right direction in Figure 5). The arrows indicate the direction in which the air flows.

[0057] The circulation tubes 513a and 514a are tubes made of silicone rubber, which is a type of silicone resin that has a rubbery appearance. Their inner diameter is smaller than that of the air pipe 512, for example, 20 to 40 mm. Other materials may be used instead of silicone rubber.

[0058] The return pipes 513a and 514a are inserted into the air pipe 512 through two circular or elliptical openings 513b and 514b drilled in the side of the air pipe 512. One return pipe 513a and 514a delivers air flowing inside the air pipe 512 to the surrounding section 511, and the other returns air flowing inside the surrounding section 511 to the air pipe 512. The return pipes 513a and 514a are inserted in such a way that air can be delivered with reduced resistance. Specifically, the return pipe 513a, which is positioned near the right side of the surrounding section 511, is inserted so that its end located inside the air pipe 512 (hereinafter referred to as the "inner end") is close to the right side, and the return pipe 514a, which is positioned near the left side of the surrounding section 511, is inserted so that its inner end is close to the left side. With this arrangement, for example, when air flows from right to left inside the air pipe 512 as shown in Figure 5, the opening at the inner end of the return pipe 513a faces the opposite direction to the airflow, making it easier for air to flow in, and the opening at the inner end of the return pipe 514a faces the same direction as the airflow, making it easier for air to flow out. Even when air flows in the opposite direction (left to right) inside the air pipe 512, it becomes easier for air to flow into the return pipe 514a and for air to flow out of the return pipe 513a. In addition, to prevent insects from entering the surrounding portion 511, mesh or the like may be attached to the ends of the return pipes 513a and 514a.

[0059] As described above, the air pipe 512 penetrates the right and left sides of the surrounding portion 511, and is positioned near the lower surface (the lower surface in Figure 3) facing the upper surface having the slit portion 511c, and the rear surface (the rear surface in Figure 3) facing the lid portion 511b. The grape fruit 3A is inserted into the interior of the surrounding portion 511 by inserting its stem 3B into the gap 511c-1 between the slit portion 511c through the opening 511d of the main body portion 511a, and is moved to the hole 511c-2 where it is fixed. In order to prevent the air pipe 512 from obstructing the movement and fixed state of the grape fruit 3A, the air pipe 512 is positioned in the above location. Because the air pipe 512 is positioned in this location, the circulation pipes 513a and 514a are arranged above the air pipe 512. Furthermore, in cases where there is a gap between the lower end of the grape fruit 3A and the lower surface of the surrounding portion 511 for the air pipe 512 to pass through when the grape fruit 3A is fixed, the air pipe 512 may be placed near the center of the lower surface of the surrounding portion 511, rather than near the rear surface. In cases where there is a gap between the upper end of the grape fruit 3A and the upper surface of the surrounding portion 511 for the air pipe 512 to pass through, the air pipe 512 may be placed near the upper surface of the surrounding portion 511, rather than near the lower surface. In this case, the circulation pipes 513a and 514a are placed below the air pipe 512.

[0060] To secure the air pipe 512 inside the surrounding portion 511, a cushioning rubber or the like may be wrapped around part or all of the air pipe 512, as shown in Figure 6(A). Figure 6 is a cross-sectional view when the air pipe 512 is positioned in the surrounding portion 511 and cut along a plane parallel to the right side of the surrounding portion 511. In Figure 6(A), a cushioning rubber 515 is wrapped around the air pipe 512. Instead of wrapping a cushioning rubber or the like, a cushioning rubber 516 may be placed in front of the point where the air pipe 512 contacts the inner surface of the surrounding portion 511, as shown in Figure 6(B). By placing the cushioning rubber 516 in front, it is possible to suppress the rotation of the air pipe 512 in the circumferential direction.

[0061] Figure 7 shows an example of a fruit cultivation member 51 with such a structure, in which grape fruits 3A are inserted into the main body 511a. The fruit cultivation member 51 can surround five grape fruits 3A, and Figure 7 is a front view when five grape fruits 3A are inserted. The grape fruits 3A have their shafts 3B passing through the slit portion 511c and are fixed in front of the air pipe 512.

[0062] It is preferable that the height (vertical size in Figure 3) and width (front-to-back size in Figure 3) of the surrounding portion 511 are set such that the grape fruits 3A do not come into contact with the inner surface of the surrounding portion 511 and the air pipe 512 inside the fruit cultivation member 51, and an appropriate gap is formed between the grape fruits 3A and them. For example, the height of the surrounding portion 511 is 34 cm and the width is 21 cm. The length of the surrounding portion 511 (left-to-right size in Figure 3) is determined according to the number of grape fruits 3A to be surrounded. For example, the length of the surrounding portion 511 that can surround five grape fruits 3A is 90 cm. Note that the number of grape fruits 3A that the surrounding portion 511 can surround is not limited to five; it may be as little as one. Furthermore, if there is a possibility that the grape fruits 3A may come into contact with the air pipe 512, an elastic cushion or the like may be attached to the contact point on the air pipe 512.

[0063] The component connection section 50 is formed by connecting fruit cultivation components in the air piping. Two fruit cultivation components are placed side by side in the longitudinal direction (left-right direction in Figure 3), and adjacent air pipes are connected using cylindrical sockets or the like as fittings. In the fruit cultivation system 2 shown in Figure 2, the depth of the greenhouse 1 is 50m, so considering the installation area of ​​the air adjustment unit 80, the length of the component connection section 50 in the depth direction is approximately 22m. Therefore, if the length of the surrounding portion 511 of the fruit cultivation component 51 is 90cm, considering the length of the portion of the air pipe 512 protruding from the surrounding portion 511, the connected fruit cultivation component in each divided region consists of approximately 20 fruit cultivation components connected in the depth direction. In Figure 2, 20 fruit cultivation components 51 to 70, including fruit cultivation component 51, are connected to form one connected fruit cultivation component. Eight such connected fruit cultivation components are arranged parallel to each other in the width direction in each divided region. The air pipes at both ends of each connected fruit cultivation member are connected to the ends of the fourth circulation pipe 40. The fruit cultivation member 51 is positioned to surround the grape fruit 3A, and the air pipe 512 is positioned near the bottom surface of the surrounding portion 511 of the fruit cultivation member 51. As a result, the air pipe 512 is positioned at approximately the same height as or slightly lower than the grape fruit 3A. The fourth circulation pipe 40 connected to the air pipe, and the circulation pipe including the fourth circulation pipe 40, are also positioned at approximately the same height as or slightly lower than the grape fruit 3A. Because the air pipe and circulation pipe are positioned in this manner, when spraying pesticides on leaves and branches located above the grape fruit 3A, there are no obstructions, and spraying can be done efficiently. If the position of the air pipe does not change, the circulation pipe may be positioned higher than the grape fruit 3A, but it is preferable that it be positioned at the same height as the air pipe.

[0064] The connected fruit cultivation members are fixed to the pipes that form and support the greenhouse 1 using fittings, wires, etc., at the air piping portions and joints that protrude from the surrounding portion, similar to the circulation components. Furthermore, as with the circulation components, valves may be installed near the joints of the air piping to regulate the amount of air flowing through the air piping.

[0065] In this way, at the member connection section 50, the fruit cultivation member surrounds multiple grape fruits 3A, forming a closed space around the surrounded grape fruits 3A that is isolated from the outside. By supplying air regulated by the air adjustment section 80 through the air piping into this gap, the environment surrounding the grape fruits 3A can be adjusted.

[0066] As described above, the surrounding portion 511 of the fruit cultivation member 51 has a rectangular parallelepiped shape, and the connected fruit cultivation member is constructed by connecting fruit cultivation members in series, so it is preferable that the grape fruits 3A grow in a roughly straight line at roughly constant intervals. For this reason, as a pruning method during the process of growing the grapes 3, mid-shoot pruning is used, which makes it easy to align the position where the grape fruits 3A grow. Mid-shoot pruning is a method of pruning branches that have fruit attached, leaving about 4 to 5 buds. Even if the grape fruits 3A grow irregularly, this can be addressed by adjusting the fixing position of the axis 3B of the grape fruit 3A in the slit portion 511c, the shape of the joints for connecting the air piping (elbow, special socket, etc.), etc.

[0067] The following modifications are possible to this embodiment. In the surrounding portion 511, the front surface is the lid portion 511b, but the top surface may also be the lid portion. In this case, a slit portion will be provided in the lid portion. Alternatively, an insertion opening may be drilled in the top surface instead of the lid portion in order to insert the grape fruit 3A into the interior of the surrounding portion 511.

[0068] Figure 8 shows an example of a fruit cultivation member with an insertion opening. Figure 8 is a perspective view of the fruit cultivation member 91. The surrounding portion 911 of the fruit cultivation member 91 has a rectangular parallelepiped shape without a lid, and multiple (five in Figure 8) insertion openings 912 for inserting grape fruits 3A are drilled on the top surface. Fitting members 913 that protrude outward for a certain length (e.g., 2-3 cm) are fitted into the insertion openings 912. For example, a thin-walled PVC pipe such as a VU pipe is used as the fitting member 913. Furthermore, a closing member 914 made of a flexible material, having a certain length and an open top, is wrapped around the outer surface of the fitting member 913. After inserting the grape fruits 3A through the opening of the closing member 914 and then inserting the grape fruits 3A into the surrounding portion 911 through the insertion openings 912, the opening of the closing member 914 is tied to the shaft 3B of the grape fruits 3A using a string-like member or the like. By securing the opening of the closing member 914 in this manner, the insertion opening 912 is closed, thereby suppressing air leakage from the surrounding portion 911. The closing member 914 is made of a transparent film that has flexibility as well as light transmission properties (high visible light transmittance), such as polyvinylidene chloride or polypropylene. The shape of the insertion opening 912 does not have to be circular; it may be a polygon such as a square, but a circular shape is preferred when considering the ease of installation of the fitting member 913 and the closing member 914, and the insertion of the grape fruits 3A. In this example, one grape fruit 3A is inserted into each insertion opening 912, but multiple grape fruits 3A may be inserted into each insertion opening 912. In this case, the shape of the insertion opening 912 is not circular, but preferably a shape corresponding to the number of grape fruits 3A to be inserted (for example, a rectangle).

[0069] The air piping 512 is provided with two recirculation sections 513 and 514, but there may be three or more recirculation sections as long as the structure does not obstruct the airflow shown in Figure 5. Furthermore, the form in which the recirculation pipes 513a and 514a are inserted into the openings 513b and 514b drilled in the air piping 512 is not limited to the form shown in Figure 5. For example, the opening surfaces of the inner ends of the recirculation pipes 513a and 514a may be in contact with the outer circumference of the respective openings 513b and 514b.

[0070] Figure 9 shows an example of inserting the recirculation pipe in the manner described above. Figure 9 shows the internal structure of the air pipe 512 when cut in the same manner as in Figure 5. The recirculation pipe 513c is inserted into the opening 513b, and the upper part of the opening surface at the inner end is in close contact with the air pipe 512 at the location indicated by arrow S1 in Figure 9 on the outer circumference of the opening 513b. The lower side surface of the recirculation pipe 513c is in close contact with the air pipe 512 at the location indicated by arrow S2, which is opposite to the location indicated by arrow S1 on the outer circumference of the opening 513b. The connection between the recirculation pipe 513c and the air pipe 512 is made by using adhesive or the like to make the recirculation pipe 513c tightly attached to the air pipe 512 at the locations indicated by arrows S1 and S2, and further by covering the connection part between the recirculation pipe 513c and the air pipe 512 with a sealant or the like to fill the gap that occurs between the recirculation pipe 513c and the air pipe 512 at the opening 513b. Furthermore, in cases where the circulation pipe 513c and the air pipe 512 can be connected using only sealing material, it is not necessary to apply adhesive or the like at the locations indicated by arrows S1 and S2. Moreover, if the circulation pipe 513c can be fixed to the air pipe 512 by applying adhesive or the like at the location indicated by arrow S1, it is not necessary to apply adhesive or the like at the location indicated by arrow S2.

[0071] The return pipe 514c is inserted into the opening 514b and, in the same configuration and manner as the return pipe 513c, is tightly connected to the air pipe 512 at the locations indicated by arrows R1 and R2 in Figure 9.

[0072] By connecting the recirculation tubes 513c and 514c to the air piping 512 in this manner, the area of ​​recirculation tubes 513c and 514c inserted into the air piping 512 is smaller than that of recirculation tubes 513a and 514a. Therefore, it is expected that the effect of suppressing obstruction of the airflow in the air piping 512 by recirculation tubes 513c and 514c can be achieved. In addition, when recirculation tubes 513c and 514c are connected to the air piping 512, the opening surfaces at the ends of recirculation tubes 513c and 514c may be formed at an angle slightly inclined from the short direction (direction perpendicular to the longitudinal direction) of recirculation tubes 513c and 514c, respectively, so that the opening surfaces at the ends of recirculation tubes 513c and 514c are perpendicular to the longitudinal direction of the air piping 512. This makes it possible to more efficiently allow air to flow into recirculation tube 513c and air to flow out of recirculation tube 514c.

[0073] The return pipes may be inserted into openings 513b and 514b in a manner such that the inner ends of the return pipes are fixed to the inner surface of the air pipes. An example of a return pipe inserted in this manner is shown in Figure 10. Figure 10 is a cross-sectional view similar to that of Figures 5 and 9.

[0074] The return pipes 513d and 514d are inserted into the openings 513b and 514b, respectively, then bent into an L-shape and fixed to the inner surface of the air pipe 512. The return pipes 513d and 514d fixed to the inner surface of the air pipe 512 extend in the longitudinal direction of the air pipe 512 such that the openings of their inner ends are located within a predetermined length (for example, 5 to 10 cm) from the openings 513b and 514b, respectively. The return pipes 513d and 514d are secured to the inner surface of the air pipe 512 using, for example, stainless steel wire. Specifically, holes or grooves are drilled near the ends of the return pipes 513d and 514d to be inserted, through which the wire is passed. The wire is then passed through these holes and wrapped around the outer surfaces of the return pipes 513d and 514d. The wire is then pulled towards the inner surface of the air pipe 512 to secure the return pipes 513d and 514d to the inner surface, and the wire is fixed in place so that it does not move, thereby securing the return pipes 513d and 514d to the inner surface of the air pipe 512. By securing the return pipes 513d and 514d to the inner surface near the opening in this way, obstruction of the airflow within the air pipe 512 is suppressed. Alternatively, the return tubes 513d and 514d may be secured using adhesive or the like.

[0075] The recirculation sections 513 and 514 of the air piping 512 are composed of recirculation pipes 513a and 514a, but they may be composed of something other than tubes (pipes) like recirculation pipes 513a and 514a, as long as the air flowing inside the air piping 512 can be recirculated to the surrounding section 511. For example, instead of recirculation pipes 513a and 514a, roof sections 513f and 514f may be provided above the openings 513e and 514e, extending diagonally upward from the side of the air piping 512, as shown in Figure 11.

[0076] In the fruit cultivation system 2 described above, the air conditioning unit 80 is located approximately in the center of the greenhouse 1, but it may also be located in other places within the greenhouse 1, such as near the center of the side. Alternatively, the air conditioning unit 80 may be installed outside the greenhouse 1 instead of inside. However, in these cases, the distance from the air conditioning unit 80 to the component connection section 50 will be different, so it will be necessary to adjust the airflow rate of the electric blowers connected to each pipe of the first circulation component pipe 10 in order to ensure that the conditions of the air flowing into each connected fruit component of the component connection section 50 are the same.

[0077] Furthermore, multiple air conditioning units 80 may be installed, and it is practical to install multiple air conditioning units 80 when the greenhouse 1 is large. The air conditioning units 80 may also be miniaturized so that multiple units 80 can be installed in a greenhouse 1 of the size shown in Figure 1. For example, one air conditioning unit may be installed for each of the four divided regions shown in Figure 2.

[0078] Other embodiments of the present invention will be described. First, a second embodiment of the present invention will be described.

[0079] In the first embodiment, the circulating pipes are connected in a structure where the connections of different types of circulating pipes are separated or joined into two. However, in this configuration, if the number of fruit cultivation members connected at the member connection section 50 is increased to accommodate grapes 3 cultivated over a wider area, the number of stages of circulating pipes connected from the air conditioning unit 80 to the member connection section 50 will increase, potentially making the configuration complicated. This can be addressed by providing multiple air conditioning units 80 and arranging multiple configurations as shown in Figure 2, or by changing the configuration of the circulating pipes.

[0080] An example of a fruit cultivation system that addresses the above (second embodiment) will be described. Figure 12 is a perspective view of the greenhouse 4 in the second embodiment, and Figure 13 is a plan view of the fruit cultivation system 5 used in the greenhouse 4. Similar to Figure 2, in Figure 13, the fruit cultivation system 5 is depicted larger than the greenhouse 4 in order to clearly show the structure of the fruit cultivation system 5 inside the greenhouse 4, and the proportions of the sizes of each part may differ from reality.

[0081] In the second embodiment, the greenhouse 4 consists of seven interconnected units, and, as in the first embodiment, has a width of 4m and a depth of 50m. The air conditioning unit 80 is located outside the greenhouse 4.

[0082] In the second embodiment, the circulation system consists of a main circulation pipe 110, a branch circulation pipe 120, and a small branch circulation pipe 130. The branch circulation pipe 120 is further composed of branch circulation pipes 121 and 122, and the small branch circulation pipe 130 is composed of small branch circulation pipes 131 and 132. The small branch circulation pipe 130 is connected to a component connecting section 150.

[0083] The inner diameters of the main circulation pipe 110, the branch circulation pipes 120, and the small branch circulation pipes 130 decrease in this order. For example, the inner diameter of the main circulation pipe 110 is 100 mm, the inner diameter of the branch circulation pipe 120 is 75 mm, and the inner diameter of the small branch circulation pipe 130 is 65 mm.

[0084] The main circulation pipe 110 is connected to the air conditioning unit 80. Specifically, it is connected to the outlet of the electric blower inside the air conditioning unit 80, penetrates the wall of the air conditioning unit 80, and extends into the interior of the greenhouse 4. Inside the greenhouse 4, the main circulation pipe 110 is located approximately in the center in the depth direction of the greenhouse 4 and is piped to extend horizontally in the width direction. Therefore, it is preferable to install the air conditioning unit 80 near the center of one side of the greenhouse 4. For example, if the air conditioning unit 80 is installed on the outside of one side of the greenhouse 4 as shown in Figure 13, the main circulation pipe 110 extends from the point where it is inserted into the greenhouse 4 to the other side in the direction of the opening. The end face of the main circulation pipe 110 facing the other side is closed.

[0085] The circulating branch pipes 121 and 122, which make up the circulating branch pipe 120, are also connected to the air conditioning unit 80. The circulating branch pipes 121 and 122 are connected by fitting their respective ends into separate connection ports drilled in the wall of the air conditioning unit 80.

[0086] Inside the greenhouse 4, as shown in Figure 13, the circulating branch pipe 121 extends from the point where it is inserted into the greenhouse 4 along the side to one end face (the upper part in Figure 13), bends vertically near the end face, and extends along the end face to the other side face.

[0087] The arrangement of the circulating branch pipe 122 is symmetrical to the arrangement of the circulating branch pipe 121. That is, the circulating branch pipe 122 extends from the point where it is inserted into the greenhouse 4 along the side to the other end face (the lower part in Figure 13), bends vertically near the end face, and extends along the end face to the other side face. The end faces of the circulating branch pipes 121 and 122 facing the other side face are closed.

[0088] The circulating branch pipe 131, which constitutes the circulating branch pipe 130, is connected to the main circulating pipe 110, and the circulating branch pipe 132 is connected to the circulating branch pipe 120 (circulating branch pipe 121 or 122).

[0089] The circulating branch pipes 131 extend from the circulating main pipe 110 toward the left and right sides of each main branch of the grapevine 3, and are arranged in groups of eight near the boundary of the building. They connect to the fruit cultivation members that make up the member connection section 150, which is located on both sides of the circulating main pipe 110 in the direction of extension of the main branches of the grapevine 3 (up and down in Figure 13). Since the air flowing through the circulating main pipe 110 flows through the circulating branch pipes 131 to the member connection section 150, the circulating branch pipes 131 are connected to the circulating main pipe 110 at an angle to facilitate airflow. Specifically, the circulating branch pipes 131 are connected to the circulating main pipe 110 such that the angle formed by the direction of air flowing through the circulating main pipe 110 and the direction of air flowing through the circulating branch pipe 131 from the connection point is acute. Y-pipes are used as joints for the connections. Therefore, the circulating branch pipes 131 connected to the main circulation pipe 110 in one direction (the circulating branch pipes 131 connected to the upper part of the main circulation pipe 110 or the circulating branch pipes 131 connected to the lower part in Figure 13) are offset from the circulating branch pipes 131 connected in the other direction and connected to the main circulation pipe 110.

[0090] The circulating branch pipes 132 are paired with the circulating branch pipes 131 and extend from the circulating branch pipe 120 toward the left and right sides of each main branch of the grapevine 3. Near the boundary of the ridge, there are a total of eight pipes: four connected to the circulating branch pipes 121 and four connected to the circulating branch pipes 122. Air from the member connection part 150 flows through the circulating branch pipes 132 to the circulating branch pipes 120, so, similar to the circulating branch pipes 131, the circulating branch pipes 132 are connected to the circulating branch pipes 120 at an angle to facilitate airflow. Specifically, the circulating branch pipes 132 are connected to the circulating branch pipes 120 such that the angle formed by the direction of air flowing through the circulating branch pipes 120 toward the connection point and the direction of air flowing through the circulating branch pipes 132 is acute. Similar to the circulating branch pipes 131, Y-pipes are used as joints for the connection.

[0091] Furthermore, the circulating branch pipe 131 may be connected to the main circulating pipe 110 at a right angle rather than at an angle, and the circulating branch pipe 132 may also be connected to the circulating branch pipe 120 at a right angle rather than at an angle.

[0092] A valve 90 is installed in the circulating branch pipe 130. By adjusting the amount of air flowing through the circulating branch pipe 130 using the valve 90, the amount of air ultimately delivered to the area surrounding the fruit cultivation component is adjusted. However, the valve 90 may be omitted to take cost and other factors into consideration.

[0093] The member connecting section 150 is composed of multiple fruit cultivation members, similar to the member connecting section 50 in the first embodiment, and the connected fruit cultivation members are arranged parallel to the direction of extension of the main branch. The air piping of the fruit cultivation members located at both ends of the connected fruit cultivation members is connected to the circulating branch pipe 130, and one connected fruit cultivation member is connected to one set of circulating branch pipes 131 and 132. In this embodiment, since the depth of the greenhouse 4 is 50m, the length of one connected fruit cultivation member is approximately 25m.

[0094] With this configuration of the circulating pipes, the air regulated by the air conditioning unit 80 flows from the air conditioning unit 80 through the main circulation pipe 110 and the small circulation branch pipe 131 in that order, as shown by the arrows in Figure 13, and is sent to the component connecting unit 150. From the component connecting unit 150, the air flows through the small circulation branch pipe 132 and the circulation branch pipe 120 (or the circulation branch pipe 121 or 122) in that order, and returns to the air conditioning unit 80.

[0095] In the second embodiment, if the number of connected fruit cultivation members is increased to cover grapes 3 grown over a wider area than the greenhouse 4, the main circulation pipe 110 and the branch circulation pipe 120 can be extended, and the small branch circulation pipe 130 and the connected fruit cultivation members can be connected to the extended portion. In the second embodiment, the circulation system consists of three types of pipes: a main circulation pipe 110, a branch circulation pipe 120, and a small branch circulation pipe 130. However, the number of pipe types is not limited to three, and other numbers of pipe types may be used. Similarly, the number of each type of pipe is not limited to those described above, and other numbers may be used. The inner diameter of each pipe is also not limited to those described above and can be changed as appropriate; all pipes may have the same inner diameter.

[0096] A third embodiment of the present invention will now be described.

[0097] In the fruit cultivation system 2 of the first embodiment, there is basically one air conditioning unit 80, and the air sent out from the air conditioning unit 80 flows through the circulation pipe and component connecting section and returns to the air conditioning unit 80 (hereinafter referred to as the "single-part configuration"). Even when there are multiple air conditioning units, the configuration consists of a series of single-part configurations. In contrast, it is also possible to configure the fruit cultivation system to include multiple air conditioning units in a single-part configuration (hereinafter referred to as the "multiple-part configuration"), that is, the air sent out from the air conditioning unit flows through the circulation pipe and component connecting section, as well as through another air conditioning unit, before returning to the original air conditioning unit. In the single-part configuration, if the circulation pipe becomes long, the effect of air conditioning by the air conditioning unit may weaken near the downstream end of the airflow, but by using a multiple-part configuration, the weakening of the conditioning effect can be suppressed.

[0098] An example of a multi-part fruit cultivation system (third embodiment) will be described. Figure 14 is a perspective view of the greenhouse 6 in the third embodiment, and Figure 15 is a plan view of the fruit cultivation system 7 used in the greenhouse 6. Similar to Figures 2 and 13, in Figure 15, the fruit cultivation system 7 is depicted larger than the greenhouse 6 in order to clearly show the structure of the fruit cultivation system 7 inside the greenhouse 6, and the proportions of the sizes of each part may differ from reality.

[0099] In the third embodiment, the greenhouse 6 consists of three interconnected buildings, and, as in the first embodiment, has a width of 4m and a depth of 50m. Inside the greenhouse 6, four main branches of the grape 3 extend in the depth direction.

[0100] The fruit cultivation system 7 has a multi-part structure comprising two air conditioning units 181 and 182. Circulation pipes and component connecting parts are arranged to connect the two air conditioning units 181 and 182. The circulation pipes consist of A circulation pipe 210, B circulation pipe 220, C circulation pipe 230, and D circulation pipe 240, all of which have the same shape and material. The inner diameter of the circulation pipes is, for example, 65 mm.

[0101] The air conditioning unit 181 is located near one end wall (upper part in Figure 15) inside the greenhouse 6 and is connected to the ends of the A circulation pipe 210 and the D circulation pipe 240. The air conditioning unit 182 is located near the other end wall (lower part in Figure 15) inside the greenhouse 6 and is connected to the ends of the B circulation pipe 220 and the C circulation pipe 230.

[0102] The air conditioning units 181 and 182 are enclosed spaces, similar to the air conditioning unit 80 in the first embodiment. Using an air conditioner and an electric blower, they adjust the air in the space to a predetermined temperature and humidity. The air conditioning unit 181 sends the adjusted air to the A circulation pipe 210, and the air conditioning unit 182 sends it to the C circulation pipe 230. Since the air is circulated by electric blowers installed in the two air conditioning units 181 and 182, the airflow can be reduced compared to the electric blower installed in the air conditioning unit 80, for example, 8 m³ 3 Use / minutes. Furthermore, the configuration of the installed devices in the air conditioning units 181 and 182 does not have to be the same, as long as they can adjust the humidity (and temperature) of the air. For example, the air conditioning unit 182 may be equipped with only an electric blower.

[0103] The A circulation pipe 210 consists of four circulation pipes, including A circulation pipes 211 and 212, and connects the connecting fruit cultivation member of the member connecting section 250 and the air conditioning section 181, which are located in one of the areas (the left half of the area in Figure 15) that is roughly divided in two by the boundary line in the depth direction of the greenhouse 6.

[0104] One end of the A circulation pipe 210 is connected to the discharge port of the electric blower in the air conditioning unit 181 and penetrates the wall of the air conditioning unit 181. The other end of the A circulation pipe 210 is connected to the air piping of the fruit cultivation member located at one end of the connected fruit cultivation member.

[0105] The B circulation pipe 220 consists of four circulation pipes, including the B circulation pipes 221 and 222, and is paired with the A circulation pipe 210, connecting the connecting fruit cultivation member and the air conditioning unit 182, which are connected to the A circulation pipe 210.

[0106] One end of the B circulation pipe 220 is connected to the air piping of the fruit cultivation member located at the other end of the connected fruit cultivation member. The other end of the B circulation pipe 220 is connected to the air adjustment unit 182 by fitting into a connection port drilled in the wall of the air adjustment unit 182.

[0107] The C circulation pipe 230 is composed of four circulation pipes, including C circulation pipes 231 and 232, and connects the connecting fruit cultivation member of the member connecting section 250 and the air conditioning section 182, which are located in the other area (the right half of the area in Figure 15) that is roughly divided in two by the boundary line in the depth direction of the greenhouse 6, using a structure similar to that of the A circulation pipe 210.

[0108] The D circulation component 240 consists of four circulation component pipes, including the D circulation component pipes 241 and 242, and is paired with the C circulation component pipe 230. The connecting fruit cultivation member and the air conditioning unit 182, which are connected to the C circulation component pipe 230, are connected in the same manner as the B circulation component pipe 220.

[0109] The member connecting section 250 is composed of multiple fruit cultivation members, similar to the member connecting section 50 in the first embodiment, and the connected fruit cultivation members are arranged parallel to the direction of extension of the main branch. In this embodiment, since the depth of the greenhouse 6 is 50m, the length of one connected fruit cultivation member is approximately 50m.

[0110] With this multi-part configuration, in the air conditioning unit 181, air from the D circulation pipe 240 is regulated and sent to the A circulation pipe 210, and in the air conditioning unit 182, air from the B circulation pipe 220 is regulated and sent to the C circulation pipe 230. As shown by the arrows in Figure 15, the regulated air circulates in the following flow: air conditioning unit 181 → A circulation pipe 210 → component connection unit 250 → B circulation pipe 220 → air conditioning unit 182 → C circulation pipe 230 → component connection unit 250 → D circulation pipe 240 → air conditioning unit 181. Since the circulating air is regulated at two locations, air conditioning units 181 and 182, it is possible to suppress the weakening of the air conditioning effect without increasing parameters for air conditioning, such as the airflow rate of the electric blower at each air conditioning unit. The circulation pipes have a straight shape with no bends, which also contributes to suppressing the weakening of the air conditioning effect.

[0111] In the fruit cultivation system 7, the A circulation pipes 210 to D circulation pipes 240 are each composed of four circulation pipes, but the number of circulation pipes that make up the system may be other than four. Also, the fruit cultivation system 7 has a multi-part configuration with two air conditioning units 181 and 182, but it may also have a multi-part configuration with three or more air conditioning units, in which case the configuration of each air conditioning unit may be the same or different. This allows for flexible adaptation to the size of the greenhouse and the scale of the air conditioning units. For example, another air conditioning unit may be installed approximately midway between air conditioning units 181 and 182, and only an electric blower may be installed in that air conditioning unit. This can further suppress the weakening of the airflow. Furthermore, the fruit cultivation system may also be configured to combine single-component and multi-component structures. That is, the fruit cultivation system may be configured such that the circulation pipes are arranged in such a way that circulation paths containing only one air conditioning unit and circulation paths containing two or more air conditioning units are mixed together.

[0112] In the third embodiment, the circulation pipes consist of linearly shaped circulation pipes A 210 to D 240, but configurations with circulation pipes of different inner diameters or branching points may also be adopted, as in the first and second embodiments.

[0113] A fourth embodiment of the present invention will now be described.

[0114] In the first embodiment, the air conditioning unit 80 simply supplies air with adjusted humidity and temperature. However, it is also possible to further include a means for adding chemicals used for fruit cultivation to the air conditioned by the air conditioning unit. For example, chemical substances used to promote the growth of grapes 3 or to prevent diseases can be added to the supplied air in the form of a mist. For example, a fumigant or a vapor of hypochlorous acid water can be added to the supplied air. Adding a fumigant can control pests and diseases, and adding hypochlorous acid water can sterilize and disinfect.

[0115] When grape fruits 3A are covered with a container such as the fruit cultivation component 51, it is usually difficult to spray such a mist-like chemical substance onto the grape fruits 3A. However, by adding it to the air supplied from the air conditioning unit, these sprays become possible.

[0116] An example of a fruit cultivation system corresponding to the above (fourth embodiment) is shown in Figure 16. In the fourth embodiment of the fruit cultivation system 8, compared to the first embodiment of the fruit cultivation system 2 shown in Figure 2, the air conditioning unit 80 is replaced by the air conditioning unit 280, and the air conditioning unit 280 is equipped with a chemical application means 281.

[0117] The chemical addition means 281 consists of a fumigant and a hypochlorous acid water sprayer. These are used simultaneously or individually to add the fumigant and / or hypochlorous acid water in a smoky form to the air that the air conditioning unit 280 sends to the first circulation pipe 11. Furthermore, the chemical application means 281 may generate a gas containing beneficial bacteria such as noble rot fungi (Botrytis cinerea) in addition to a fumigant or hypochlorous acid water. Although the chemical application means 281 is provided within the air conditioning unit 280, it may also be connected directly to the first circulation pipe 11 independently of the air conditioning unit 280. In cases where multiple air conditioning units are provided, such as in the fruit cultivation system 7 of the third embodiment, all air conditioning units may be equipped with the chemical application means, or any number of air conditioning units may be equipped with the chemical application means. Even when the chemical application means is installed independently of the air conditioning unit, two or more chemical application means may be installed.

[0118] A fifth embodiment of the present invention will now be described.

[0119] In the first embodiment, the member connection section 50 is constructed by connecting fruit cultivation members 51 in which air pipes 512 have already passed through the surrounding section 511. However, it is also possible to separate the air pipes and the surrounding section, connect the air pipes in advance, and then install the surrounding section on them to construct the member connection section. In this case, instead of connecting multiple air pipes at the location corresponding to the connected fruit cultivation members, one air pipe may be used. By separating the air pipes and the surrounding section in this way, and installing the surrounding section with the air pipes and circulation components connected, the lighter surrounding section is installed instead of the fruit cultivation member equipped with air pipes, thus reducing the workload of the installation work. In addition, since longer air pipes can be used, the amount of work required to connect the air pipes can also be reduced. Furthermore, the position in which the surrounding section is installed can be easily adjusted, and after harvesting the grape fruits 3A, work for growing the next grape fruits 3A can be carried out with the air pipes and circulation components still connected, thus reducing the workload in the long term. Furthermore, the surrounding section, which is separated from the air piping, can also be used as a fruit cultivation component.

[0120] Figure 17 shows an example of the surrounding portion (5th embodiment) when the air piping and the surrounding portion are separable. Figure 17 is a perspective view of the surrounding portion 101. The surrounding portion 101 has the same shape as the surrounding portion 511 in the first embodiment and is made of the same material. Like the surrounding portion 511, it has a main body portion 101a, a lid portion 101b and a slit portion 101c, but an insertion portion 107 is provided to insert the air piping inside so that the air piping penetrates the surrounding portion 101. Figure 17(A) is a perspective view of the surrounding portion 101 with the lid portion 101b and the plug portion 107d (described later) fastened in place, and Figure 17(B) is a perspective view of the surrounding portion 101 and the plug portion 107d with them removed. As with the case in Figure 3, in Figure 17, as indicated by the arrows, the top and bottom of the figure are the "top" and "bottom" of the surrounding portion 101, respectively; the front and back are the "front" and "back" of the surrounding portion 101, respectively; and the right and left sides (right and left sides of the figure) when viewed from the front are the "right" and "left" of the surrounding portion 101, respectively.

[0121] The insertion section 107 has an openable and closable shape and is located at the bottom of the surrounding section 101 so that the surrounding section 101 can be lowered from above the air pipe and the air pipe can be inserted into the surrounding section 101 from the side of the air pipe. The surrounding section 101 is designed to allow installation even when air pipes are connected to each other or to the circulation components, so that the air pipe can be inserted into the surrounding section 101 from the side of the air pipe as described above. The insertion section 107 consists of an insertion opening 107a, through openings 107b and 107c, and a plug section 107d, and the insertion section 107 can be opened and closed by using the plug section 107d.

[0122] The insertion port 107a is provided on the lower surface (the lower surface in Figure 17) of the surrounding portion 101 so that an air pipe can be inserted. The insertion port 107a extends in the longitudinal direction (left-right direction in Figure 17) of the surrounding portion 101, reaching the right and left sides of the surrounding portion 101 (the right and left sides in Figure 17), and has a rectangular shape with both ends open. Figure 18 shows examples of the right and bottom sides of the main body portion 101a with the plug portion 107d removed. Figure 18(A) is a right side view of the main body portion 101a, and Figure 18(B) is a bottom view of the main body portion 101a. The width of the insertion port 107a (length in the front-to-back direction in Figure 17) is sized to match the size of the air pipe. In other words, the width of the insertion opening 107a should be larger than the outer diameter of the air pipe so that the air pipe can be inserted, but if it is too large, the gap at the through-hole 107b described later will be large, so it is preferable that the width of the insertion opening 107a be slightly larger than the outer diameter of the air pipe. For example, if the outer diameter of the air pipe is 76 mm, the width of the insertion opening 107a should be 82 mm. By fitting the stopper portion 107d into the insertion opening 107a, the insertion opening 107a is closed.

[0123] The through-ports 107b and 107c (hereinafter collectively referred to as "through-ports") are provided on the right and left sides of the surrounding portion 101, respectively, to move the air piping inserted from the insertion port 107a into the interior of the surrounding portion 101. The through-ports are connected to the insertion port 107a and have a shape combining a semicircle and a rectangle, with the rectangular portion located at the bottom being connected to the insertion port 107a. Therefore, the width of that portion (length in the front-to-back direction in Figure 17) is the same as the width of the insertion port 107a. The air piping is fixed at the semicircular portion located at the top. Therefore, in order to reduce the gap between the air piping and the inner surface of the through-port, the height of the through-port (length in the vertical direction in Figure 17) should be the same as the sum of the outer diameter of the air piping and the thickness of the plug portion 107b (length in the vertical direction in Figure 17), and preferably slightly larger than the sum of these values.

[0124] The plug portion 107d is used to close the insertion opening 107a by fitting it into the opening. Therefore, the plug portion 107d has the same length (length in the left-right direction in Figure 17) and width (length in the front-back direction in Figure 17) as the insertion opening 107a, and the same thickness (length in the up-down direction in Figure 17) as the bottom surface of the main body portion 101a, and is shaped like a rectangular parallelepiped. The air pipe is inserted into the surrounding portion 101 from the insertion opening 107a, and the plug portion 107d is fitted into the insertion opening 107a. Therefore, since the air pipe is placed on the upper surface of the plug portion 107d, the plug portion 107d may be secured to the main body portion 101a using adhesive tape or the like to prevent it from coming off the insertion opening 107a due to the weight or movement of the air pipe.

[0125] The enclosure portion 101 is installed on the air piping by removing the plug portion 107d from the enclosure portion 101, inserting the air piping through the insertion port 107a, moving the air piping to the upper ends of the through ports 107b and 107c, and fitting the plug portion 107d into the insertion port 107a. When installing the enclosure portion 101, the enclosure portion 101 may be fixed to the pipes that form and support the greenhouse 1 using metal fittings or wires to ensure stability. Furthermore, if a gap occurs between the air piping and the penetration opening, a flexible material such as a rubber sponge or silicone sponge may be inserted into the gap to seal it.

[0126] The following modifications are possible to this embodiment. The insertion port 107a is provided on the lower surface of the surrounding portion 101, but it may also be provided on the rear surface of the surrounding portion 101 (the rear surface in Figure 17). In this case as well, the through-ports are provided on the right and left sides of the surrounding portion 101, but they extend in the front-to-back direction rather than the up-and-down direction. Since the air piping has a recirculating section at the top, when inserting the air piping from the insertion port provided on the rear surface, care must be taken to prevent the recirculating section from hitting the surrounding portion by tilting the surrounding portion or taking other measures. Furthermore, if the air piping can be placed near the upper surface of the surrounding portion 101 (the upper surface in Figure 17), the insertion opening may be provided on the upper surface of the surrounding portion. In this case, the through-holes provided on the right and left sides will also be positioned to match the insertion opening. If the air piping can be placed near the center of the lower surface of the surrounding portion, the air piping may be inserted through the opening 101d to which the lid portion 101b is joined. In this case, the opening 101d will serve as the insertion opening, and the through-holes will be positioned to match the location where the air piping is inserted. The insertion port 107a is not limited to the rectangular shape described above; it may be any other shape as long as the air piping can be inserted, and the plug portion 107d should be shaped to match the shape of the insertion port 107a. The through port is also not limited to the shape described above; it may be any other shape as long as the air piping can move.

[0127] To suppress air leakage from the insertion portion 107 when the air piping is inserted into the surrounding portion 101, it is also possible to attach a film-like auxiliary member made of a flexible material such as polyethylene or polypropylene to the insertion portion 107.

[0128] Figure 19 shows an example of the main body 101a when an auxiliary member is attached to the insertion part 107. Figure 19 is a cross-sectional view when the main body 101a is cut along a plane parallel to the right side. Figure 19(A) is a cross-sectional view with the air pipe 102 not inserted and the plug part 107d removed, and Figure 19(B) is a cross-sectional view with the air pipe 102 inserted and the plug part 107d fitted. The auxiliary member 108 is attached to the periphery of the insertion opening 107a using an adhesive or the like so as to cover the entire opening 107a. When the air pipe 102 is inserted through the insertion opening 107a, the auxiliary member 108 is pressed against the upper side of the air pipe 102, so the auxiliary member 108 has a width that is greater than the width of the insertion opening 107a (length in the left-right direction in Figure 19).

[0129] The air piping 102, like the air piping 512, is equipped with a recirculation section composed of a recirculation pipe or the like. Therefore, in order to recirculate the air flowing inside the air piping 102 from the recirculation section into the surrounding section 101, the auxiliary member 108 has an opening (not shown) that penetrates the recirculation section at a position opposite the recirculation section. An example of such an opening is the gap 511c-1 in the slit section 511c. Such an opening consisting of a gap is normally in a closed state, but when a rigid object is inserted, it opens to that extent and grips the object from both sides, allowing the inserted object to move. Furthermore, if a gap occurs between the periphery of the opening and the recirculation section when the recirculation section is passed through the opening, the auxiliary member 108 and the air pipe 102 may be bonded together with adhesive tape or the like to eliminate the gap in order to suppress air leakage from that gap.

[0130] By using such auxiliary members 108, even if a gap occurs between the air pipe 102 and the penetration port or at the fitting point of the plug portion 107d, air leakage from that gap can be suppressed.

[0131] In the embodiments described above (Embodiments 1 to 5), the entire greenhouse may be covered with a windbreak net. The use of a windbreak net can suppress damage to grape fruits and new shoots.

[0132] The present invention can be realized not only as the above-described fruit cultivation component and fruit cultivation system, but also as a fruit cultivation method using the same system.

[0133] Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible without departing from the spirit of the invention.

[0134] Furthermore, matters not explicitly disclosed in the above-described form, such as the dimensions and weight of the components, do not deviate from what is normally practiced by a person skilled in the art, and values ​​that can be easily anticipated by a person skilled in the art may be adopted. [Explanation of Symbols]

[0135] 1, 4, 6 Greenhouse 2, 5, 7, 8 Fruit cultivation system 3 Grapes 3A Grape Fruit 3B axis 10, 11, 12 1st circulation component pipe 20, 21, 22, 23, 24 2nd circulation component pipe 30, 31, 32, 33, 34 Third circulation component pipe 40, 41, 42, 43, 44 4th circulation component pipe 50, 150, 250 component connecting parts 51, 91 Fruit cultivation components 80, 181, 182, 280 Air conditioning unit 90 valves 101, 511, 911 surrounding section 101a, 511a Main body 101b, 511b Lid 101c, 511c slit section 101d, 511d, 513b, 513e, 514b, 514e opening 102, 512 Air piping 107 Insertion part 107a, 912 Insertion port 107b, 107c through hole 107d Plug part 108 Auxiliary member 110 Circulation main 120, 121, 122 Circulatory branches 130, 131, 132 Circulatory ducts 210, 211, 212 A circulation configuration pipe 220, 221, 222 B circulation configuration pipe 230, 231, 232 C circulation configuration tube 240, 241, 242 D circulation configuration tube 281 Drug Addition Means 513, 514 Circulation section 513a, 513c, 513d, 514a, 514c, 514d Reflux tube 513f, 514f roof section 515, 516 Cushion rubber 913 Fitting member 914 Closing member

Claims

1. A fruit cultivation component used for cultivating fruit, A surrounding portion that surrounds the aforementioned fruit, It comprises an air pipe formed to allow air to flow through its interior and penetrating the surrounding portion, The fruit cultivation member is characterized in that the air piping comprises at least two recirculation sections for circulating the air flowing inside to the surrounding section.

2. The fruit cultivation member according to claim 1, wherein the recirculation portion is composed of a recirculation pipe that penetrates the side surface of the air piping.

3. The fruit cultivation member according to claim 1, wherein the surrounding portion is capable of surrounding a plurality of fruits.

4. The surrounding portion is, A removable lid portion is provided, which has an opening in the surrounding portion for inserting the fruit inside, The fruit cultivation member according to claim 1, comprising: an openable and closable and flexible slit portion that forms a gap extending toward the center from the portion where the lid portion is joined, so that the stem of the fruit can be inserted and moved.

5. The fruit cultivation member according to claim 4, wherein the air piping is arranged in the vicinity of the surface in the surrounding portion that faces the surface having the slit portion.

6. The fruit cultivation member according to claim 1, wherein the surrounding portion is made of a rigid material.

7. A fruit cultivation system using the fruit cultivation member described in claim 1, At least an air conditioning unit that adjusts the humidity of the air, A member connecting portion formed by connecting the aforementioned fruit cultivation members, The system includes a circulation pipe connected to the air conditioning unit and the member connecting unit, which guides the air regulated by the air conditioning unit to the member connecting unit, A fruit cultivation system characterized in that the air conditioning unit, the circulation component pipe, and the member connecting unit form a circulation path.

8. At least an air conditioning unit that adjusts the humidity of the air, A fruit cultivation component consisting of a surrounding portion that surrounds the fruit, An air pipe that penetrates the aforementioned surrounding portion, The system includes a circulation component pipe that connects to the air conditioning unit and the air piping to form a circulation path for circulating the air regulated by the air conditioning unit, The air piping is provided with at least two recirculation sections for recirculating the air flowing inside the surrounding section, with each surrounding section having such recirculation section. A fruit cultivation system characterized in that the surrounding portion includes an opening and closing insertion portion into which the air pipe can be inserted from the side of the air pipe.

9. The surrounding portion comprises a flexible auxiliary member that is attached to the insertion portion. The fruit cultivation system according to claim 8, wherein the auxiliary member is formed to cover the insertion opening of the insertion part and to be pressed against the side surface of the air pipe when the air pipe is inserted.

10. The system comprises multiple air conditioning units, The fruit cultivation system according to any one of claims 7 to 9, wherein the circulation path includes at least two of the air conditioning units.

11. A fruit cultivation component used for cultivating fruit, The fruit cultivation member is characterized by comprising a surrounding portion that surrounds the fruit, and the surrounding portion having an openable and closable insertion portion formed to allow the insertion of an air pipe.

12. The surrounding portion comprises a flexible auxiliary member that is attached to the insertion portion. The fruit cultivation member according to claim 11, wherein the auxiliary member is formed to cover the insertion opening of the insertion part and to be pressed against the side surface of the air pipe when the air pipe is inserted.

13. A method for cultivating fruit, characterized by using the fruit cultivation system described in any one of claims 7 to 9.

14. The fruit cultivation method according to claim 13, wherein the fruit is a grape.

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