KR20200144974A - CO2 supplying apparatus and method for plant factory using tri-generation - Google Patents

Abstract

The present invention relates to an apparatus and method for supplying CO_2 of a plant factory using a tri-generation technique. An object of the present invention is to provide the apparatus and method for supplying CO_2 of the plant factory using the tri-generation technique, which can effectively distribute and supply CO_2 to highly integrated plants when a tri-generation system is applied to the plant factory.

Description

CO2 supplying apparatus and method for plant factory using tri-generation}

The present invention relates to an apparatus and method for supplying CO ₂ in a plant factory using the Trizen technique, and more specifically, a Trizen system for producing heating, cooling, and CO ₂ is introduced into the plant factory, , Trapani now relates to a CO ₂ supply and how to plant plants using the technique of the CO ₂ to be more efficiently supplied to the plant.

Gas engine-driven heat pump (GHP) refers to a device that produces cooling and heating using a compressor driven by the power of an internal combustion engine that uses clean low-carbon gas fuel (NG, LPG, synthetic gas). . In general, a very large amount of heat is generated in an internal combustion engine, and therefore, the internal combustion engine is provided with a structure to cool the internal combustion engine by absorbing excess heat while cooling water circulates around the internal combustion engine. At this time, the coolant that has reached a high temperature by absorbing heat returns to the internal combustion engine and discards heat to the outside so that it can absorb heat.This waste heat can be used to perform heating, or a cooling cycle including a heat pump is performed. Cooling can also be performed by using. In addition, since carbon dioxide (CO ₂ ) is included in the exhaust gas generated from the internal combustion engine, it is possible to produce CO ₂ by removing harmful substances and excessive moisture in the exhaust gas.

As such, GHP can produce three types of heating, cooling, and CO ₂ at once, and such a system is called a tri-generation system or a trigen system. An example of such a Trigen system is well disclosed in Korean Patent Registration No. 1569677 ("Trigen system and its control method using high lean combustion", 2015.11.11.). On the other hand, when referring to the Trigen system, it does not necessarily refer to only producing heating, cooling, and CO ₂ using GHP. For example, a generator operated by a gas engine may be used as the central device of the Trizen system. In this case, electricity from a generator, heating from waste heat from a gas engine, and CO ₂ from exhaust gas from a gas engine are produced, thereby forming a Trigen system that produces electricity, heating, and CO ₂ . In this case, it is possible to produce cooling by using electricity generated from the generator. In this case, it can be utilized as a quadruple power generation system that produces electricity, heating, cooling, and CO ₂ .

Meanwhile, the introduction of urban smart farms in the form of direct cultivation of crops by installing greenhouses on the roof of buildings in order to quickly and easily supply fresh crops to people, mainly in large cities in advanced countries such as North America and Europe, is spreading. Plant factory facilities such as urban smart farms and facility gardening require electricity to supply various equipment for crop cultivation, heating and cooling to control the temperature suitable for crop growth, and also to control crop growth. A supply of CO ₂ is needed to facilitate it. That is, it is suitable to apply the above-described triple or quadruple power generation system. In Korea, electricity bills are cheaper than overseas, so it is not necessary to produce electricity from GHP. In case of domestic plant factories, it is very suitable to apply the GHP-based Trigen system that produces heating, cooling, and CO ₂ as described above. Do.

In general, a plant factory consists of a plurality of cabinets arranged by planting plants in long pots arranged on a plurality of shelves. The space in which these storage cabinets are arranged is isolated from the outside, and lighting, heating, cooling, and CO ₂ are supplied to satisfy the optimal light quantity, temperature, humidity, and air quality conditions for plant growth. As described above, when GHP is introduced into a plant factory, heating, cooling, and CO ₂ can be supplied smoothly, and external electricity can be used for lighting.

However, as described above, since plants are arranged in a highly integrated form, if CO ₂ is simply supplied from one outlet, the concentration of CO _{2 in the} plant factory space becomes non-uniform, thus maximizing the plant growth efficiency. Can't. Therefore, when applying the Trigen system to a plant factory, there is a need for a technology that can effectively supply the CO ₂ generated from the Trigen system to the plant.

1. Korean Patent Registration No. 1569677 ("Trigen system using high lean combustion and its control method", 2015.11.11.)

Therefore, the present invention was conceived to solve the problems of the prior art as described above, and the object of the present invention is to effectively distribute and supply CO ₂ to highly integrated plants when the Trigen system is applied to a plant factory. Note, it is intended to provide an apparatus and method for supplying CO ₂ in a plant factory using the Trigen technique.

The CO ₂ supply device 100 of a plant factory using the Trigen technique of the present invention for achieving the above object includes a plurality of pots 550 extending in one direction and in which a plurality of plants are planted along the extending direction. In the plant factory's CO ₂ supply device 100 that is installed in a plant factory and distributes and supplies CO ₂ to the plants from the Trigen system 200 for producing CO ₂ and discharging it to the outlet 210, the A main pipe 110 in which a plurality of branch portions corresponding to the flower pots 550 are formed in the form of a pipe in communication with the outlet 210, and CO ₂ is circulated therein; One end is in the form of a pipe in communication with the branch and a plurality of supply holes 125 are formed to discharge and supply CO ₂ to the plant, and extend in the extending direction of the flower pot 550 to be disposed above or below the plant A distribution unit including at least one selected from a supply pipe 120 and a supply fan 130 formed on the branch and supplying CO ₂ to the plant; It may include.

More specifically, the distribution unit is provided with only the supply pipe 120 disposed at the upper side per one of the flower pots 550, or the supply pipe 120 disposed at the lower side per each of the flower pots 550 Or, only the supply fan 130 is installed per each of the flower pots 550, or the supply pipe 120 and the supply fan 130 are disposed above each of the flower pots 550, or It may be formed such that the supply pipe 120 and the supply fan 130 disposed below the flower pot 550 are installed.

In addition, the distribution unit, a plurality of the supply holes 125 are all arranged at equal intervals, the diameter of the main pipe 110 is D, the diameter of the supply pipe 120 is d, the supply pipe 120 When the number is N, the diameter of the supply holes 125 is a, and the number of supply holes 125 is n, it may be formed to satisfy the following equation.

In addition, the plurality of supply holes 125 may be arranged at tighter intervals as the overall length of the supply pipe 120 is shorter.

In addition, the distribution unit is provided with at least one supply pipe 120 per each flower pot 550 in the width direction of the flower pot 550, and if the width of the flower pot 550 is more than a predetermined standard, a plurality of It can be formed to be installed.

In addition, in the supply hole 125, when the width of the flower pot 550 is less than a predetermined standard at one supply position P, one supply hole 125 per supply position P is When the supply pipe 120 is disposed vertically downward or upward, and the width of the flower pot 550 is greater than or equal to a predetermined reference, a pair of the supply holes 125 per one supply position P may be provided with the supply pipe ( 120) may be arranged to open at a predetermined angle from below or above.

In addition, the CO ₂ supply device of the plant factory is provided at the connection portion of the main pipe 110 and the supply pipe 120 to control the flow rate of CO ₂ circulating through the supply pipe 120 ( 140); It may further include.

In addition, the CO ₂ supply device of the plant factory includes: a plurality of concentration sensors 150 disposed between the supply pipe 120 and the plants to measure the CO ₂ concentration; It may further include.

In addition, the CO ₂ supply method of the plant factory using the Trigen technique of the present invention is distributed through the main pipe 110 in the CO ₂ supply method of the plant factory using the CO ₂ supply device of the plant factory as described above. Distributing the converted CO ₂ to a plurality of the distribution units; Supplying the CO ₂ distributed to the distribution unit to the plant; Measuring the concentration of CO ₂ at a plurality of measurement locations (S) by a plurality of the concentration sensors 150; When the measured CO ₂ concentration deviates from a predetermined standard, the supply valve 140 or the supply fan 130 is operated so that the amount of CO ₂ supplied to the supply position P close to the measurement position S increases or decreases. step; It may include.

According to the present invention, when the Trigen system is applied to a plant factory, there is an effect that CO ₂ can be effectively distributed and supplied to highly integrated plants. More specifically, for a plant factory in which a plurality of storage cabinets are arranged in which plants are planted in long pots arranged on a plurality of shelves, a pipe or a fan extending in the extending direction of the pots in which plants are arranged is provided. by a, a uniform rodeunji plants in any location within the plant, plant density by allowing judoe blowing a CO ₂ directly to the location where the plant is present, is formed in consideration of the distance from the GHP outlet to the CO ₂ injection position is properly optimized using It has the effect of making it possible to supply CO ₂ .

Of course, according to this effect, according to the present invention, there is an effect of maximizing the growth efficiency of plants in the plant factory. On the flip side, this means that the use of CO ₂ in the Trigen system that produces heating, cooling and CO ₂ can be optimized, resulting in the maximization of the efficiency of the Trigen system itself.

1 is a schematic diagram of a plant factory.
Figure 2 is an embodiment of the CO ₂ supply device of the present invention.
3 is a first embodiment of the distribution unit.
4 is a second embodiment of the distribution unit.
5 is a third embodiment of the distribution unit.
6 is a fourth embodiment of the distribution unit.
7 is a fifth embodiment of the distribution unit.
8 is an embodiment of arrangement of a flower pot and a supply pipe.
9 is a detailed view of the lower surface of the supply pipe.
10 is an embodiment of the arrangement of the supply hole.
11 is a detailed cross-sectional view of the supply pipe.
12 is an embodiment of a supply and use state.

Hereinafter, an apparatus and method for supplying CO ₂ in a plant factory using the Trigen technique according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

1 schematically shows the form of a general plant factory. As shown, in the plant factory, a plurality of storage cabinets 500 formed by planting plants in long pots 550 disposed on a plurality of shelves 510 are arranged. As shown, the flower pot 550 extends in one direction and has a shape in which a plurality of plants are planted along the extending direction. In addition, in the storage cabinet 500, a lighting 520 for supplying light is installed so that plants can grow smoothly. In the case of hydroponic cultivation, since the plants are basically planted in water, various devices for managing water quality may be further provided, and in the case of soil cultivation, a nozzle for watering the plants may be further installed.

As described above, the plant factory space needs to meet environmental conditions such as temperature, humidity, and CO ₂ concentration optimized for plant growth, and for this, heating, cooling, and CO ₂ need to be supplied. At this time, the GHP-based Trigen system that produces heating, cooling and CO ₂ is very suitable for introduction into plant factories.

[1] CO of the plant factory of the present invention ₂ Basic configuration of supply device

2 is a schematic diagram of the CO ₂ supply device of the present invention, as described above, of the present invention for distributing and supplying CO ₂ to the plant from the Trigen system 200 for producing CO ₂ and discharging it to the outlet 210 It schematically shows the CO ₂ supply device 100 of the plant factory. As shown, the CO ₂ supply device 100 of the plant factory of the present invention includes a distribution unit including a main pipe 110, a supply pipe 120 having a supply hole 125, or a supply fan 130, and , Here, the supply valve 140 and the concentration sensor 150 may be further included.

The main pipe 110 is formed in the form of a pipe in communication with the outlet 210 so that CO ₂ is circulated therein, and a plurality of branch portions corresponding to the flower pots 550 are formed. In addition to CO ₂ , the exhaust gas discharged from the Trigen system 200 further contains harmful substances and excessive moisture, but by passing a catalyst for removing harmful substances and a desiccant for removing moisture, the outlet ( 210) can be clean air with only a high concentration of CO ₂ .

As described above, the distribution unit may include at least one selected from the supply pipe 120 and the supply fan 130. The specific configuration of the distribution unit will be described in more detail later.

The supply pipe 120 may be connected to the branch, that is, a plurality of the main pipes 110 may be formed, and at least one may be disposed for each of the flower pots 550 as shown. The supply pipe 120 has one end in communication with the branch and has a pipe shape in which a plurality of supply holes 125 are formed. More specifically, the supply pipe 120 has one end in the form of a pipe forming a connection end 120a communicating with the main pipe 110 and the other end being closed to form a closed end 120b. Accordingly, the CO ₂ circulating in the main pipe 110 flows into the supply pipe 120 through the connection end 120a and can be distributed. In addition, through the supply hole 125 formed in the supply pipe 120, CO ₂ is discharged from the supply pipe 120 and can be supplied to the plant. The supply pipe 120 extends in the extending direction of the flower pot 550 and is disposed above or below the plant. According to this arrangement, CO ₂ can be naturally and smoothly supplied to the plant.

The supply fan 130 is formed on the side of the branch and serves to blow and supply CO ₂ to the plant. As will be described in more detail later, the supply fan 130 may be installed and used alone, or may be installed and used together with the supply pipe 120. When installed alone, the supply fan 130 performs the role of supplying by blowing CO ₂ to the plant, and when installed together, discharged from the supply pipe 120 by the blowing of the supply fan 130 It may play a role of appropriately controlling the concentration according to the location of CO ₂ .

A summary of the process of supplying CO2 by the CO ₂ supply device 100 of the plant factory configured as described above is as follows. First, the CO ₂ circulated through the main pipe 110 is distributed to the plurality of distribution units. Next, CO ₂ is supplied to the plant by the supply pipe 120 or the supply fan 130.

Conventionally, when the CO ₂ discharged from the Trigen system 200 is supplied to a plant factory, a method of supplying the entire space through a device such as an outlet installed on the wall has been used. However, in this case, there is a problem that the concentration of CO ₂ is high near the outlet, whereas the concentration of CO ₂ decreases as the distance from the outlet increases. In addition, there is a problem in that the concentration imbalance problem is further aggravated by the plants disposed near the outlet consume CO ₂ .

However, the CO ₂ supply device 100 of the plant factory of the present invention does not directly discharge the CO ₂ discharged from the Trigen system 200 into the plant factory space as described above, but the CO ₂ into the main pipe ( 110) through a suitable route, but is made to supply to the plant through a plurality of the distribution unit in communication with the main pipe (110). In particular, since the distribution unit is disposed at least one for each of the flower pots 550, regardless of how far and close the plant is to the outlet 210, that is, wherever the plant is located, CO ₂ is uniformly supplied. You will be able to.

3 to 7 illustrate various embodiments of the distribution unit. Each of them will be described in more detail as follows.

3 is a first embodiment of the distribution unit, in the case where only the supply pipe 120 disposed on the upper side of one flower pot 550 is installed. As described above, a plurality of the supply holes 125 are formed in the supply pipe 120, so that the CO ₂ circulating in the supply pipe 120 is naturally discharged through the supply hole 125. I can. At this time, as in the first embodiment, when the supply pipe 120 is disposed above the plant, CO ₂ naturally descends and can be smoothly supplied to the plant because it is denser than air. Of course, in this case, of course, the supply hole 125 is preferably formed below the supply pipe 120. In addition, in the case of the first embodiment, since the supply pipe 120 and the plant are arranged to be spaced apart to some extent, no interference occurs to the plant during the process of installing or replacing the supply pipe 120. There is also the advantage of not doing it.

4 is a second embodiment of the distribution unit, a case where only the supply pipe 120 disposed at the lower side is installed per one of the flower pots 550. In the case of the first embodiment, there is a concern that light emitted from the lighting 520 may be partially covered by the supply pipe 120. In order to solve this point, in the second embodiment, the supply pipe 120 is disposed under the plant. I can not get the first embodiment advantages, that is due to the natural lowering effect that there is no interference with the CO ₂ supply to the plant seamlessly become effect or, installation, replacement work plant of CO ₂ above, the first to the second embodiment According to the above, there is an advantage in that the element that obstructs the light emitted from the lighting 520 can be removed, thereby removing the element that obstructs the plant growth. In addition, in the second embodiment, the supply hole 125 is formed above the supply pipe 120, so that CO ₂ is injected upwardly through the supply hole 125 at an appropriate pressure, although CO ₂ Even if it is denser than air, as it is spread upwards by the injection pressure, the supply of CO ₂ to the plant can be sufficiently smooth.

5 is a third embodiment of the distribution unit, in a case where only the supply fan 130 is installed per one of the flower pots 550. As described above, in a conventional plant factory, a concentration imbalance problem occurred because the CO ₂ discharged from the Trigen system 200 was supplied to the entire space through any one outlet. In the third embodiment, this problem is primarily solved by arranging the distribution unit for each of the flower pots 550. However, since the flower pot 550 has a shape extending in one direction as shown, when the distribution part is disposed at one end side of the flower pot 550, the concentration of CO ₂ is high in the side close to the distribution part. A concentration imbalance problem may still occur in which the CO ₂ concentration decreases as the distance from the distribution unit increases. At this time, when the supply fan 130 is installed as in the third embodiment, the supply fan 130 is forced to blow air from the distribution unit, so that the CO ₂ reaches the far end side of the flower pot 550. By allowing it to be supplied, the concentration imbalance problem as described above can be smoothly solved.

The role of the supply fan 130 is not only for uniform distribution of CO ₂ . Proper wind is required for the smooth growth of plants, and the wind strength is a factor that affects the uniform distribution of CO ₂ , moisture retention, and opening of pores of the plant. If the pores of the plant are properly opened, the amount of exchange of oxygen, carbon dioxide, moisture, etc. increases, which is helpful for growth, but if the pores of the plant are opened excessively, more moisture escaping into the pores than the moisture sucked from the root causes dehydration. It is necessary to properly adjust the intensity of. In addition, direct winds should be avoided as plants directly hit the wind, which adversely affects the growth and decreases the height of the plants. In consideration of this point, it is preferable that the wind speed of the wind blown from the supply fan 130 is about 1 to 3 m/s. At this time, if the length of the flower pot 550 is quite long, it may be difficult to blow CO ₂ to the end, and in this case, it is necessary to additionally install the supply fan 130.

6 is a fourth embodiment of the distribution unit, a case in which the supply pipe 120 and the supply fan 130 disposed on the upper side of each flower pot 550 are installed. In the case of the fourth embodiment, while taking advantage of the first embodiment described above as it is, it is possible to distribute the CO ₂ more evenly using the supply fan 130. More specifically, it is as follows. In supplying CO ₂ to the plant using the supply pipe 120 as described above, ideally, CO ₂ should be uniformly supplied from the connection end 120a to the closed end 120b, but in reality As the pressure drop occurs while proceeding from the connection end 120a to the closed end 120b, the CO ₂ flow rate at the side of the closed end 120b may be partially reduced. In addition, as CO ₂ exits from the supply hole 125 near the connection end 120a in advance, the tendency for the CO ₂ flow rate to decrease toward the closed end 120b becomes stronger. That is, even if CO ₂ is supplied to the plant using the supply pipe 120, the problem of concentration non-uniformity in which the concentration of CO ₂ is higher in the connection end 120a than the closed end 120b is still slightly Can remain. At this time, the supply fan 130 blows air having a high CO ₂ concentration from the connection end 120a to the closed end 120b, so that this concentration non-uniformity problem can be greatly alleviated. That is, the supply fan 130 is disposed on the connection end 120a and blows toward the closed end 120b to control the concentration of CO ₂ for each location. In addition, as described above, by supplying wind to the plants using the supply fan 130, it is of course possible to further affect plant growth promotion, such as maintaining moisture and expanding pores.

7 is a fifth embodiment of the distribution unit, a case in which the supply pipe 120 and the supply fan 130 disposed below each flower pot 550 are installed. Compared with the fourth embodiment, only the supply pipe 120 is installed on the lower side is different, that is, the fifth embodiment also has advantages of the second embodiment, the advantages of the third embodiment, and the advantages of simultaneous installation of a supply pipe + a supply fan. You can get all of them.

[2] CO of the plant factory of the present invention ₂ Additional configuration of the supply device

As described above, the CO ₂ supply device 100 of the plant factory may further include a supply valve 140 and a concentration sensor 150, thereby performing more precise environmental condition control. This will be described in detail as follows.

The supply valve 140 is provided at a connection portion between the main pipe 110 and the supply pipe 120 and serves to adjust the flow rate of CO ₂ circulating through the supply pipe 120. For example, when the concentration of CO ₂ is not as high as necessary, the flow rate of CO ₂ supplied to the plant may be increased by opening the supply valve 140 further, and when the concentration of CO ₂ is excessively increased than necessary, the supply valve ( 140) by giving a may be further reduced by closing the CO ₂ flow rate to be supplied to the plant.

The concentration sensor 150 is disposed between the supply pipe 120 and the plant to measure the CO ₂ concentration. By controlling the degree of opening and closing of the supply valve 140 and the degree of blowing of the supply fan 130 described above according to the concentration of CO ₂ measured by the concentration sensor 150, the CO ₂ concentration condition around the plant is always optimized. You can keep it.

When the supply valve 140 and the concentration sensor 150 are further provided, the CO ₂ supply device 100 of the plant factory may operate as follows. First, the concentration of CO ₂ is measured at a plurality of measurement locations (S) by the plurality of concentration sensors 150. Next, when the measured CO ₂ concentration deviates from a predetermined standard, the supply valve 140 or the supply fan 130 so that the amount of CO ₂ supplied to the supply position P close to the measurement position S increases or decreases. This works. For example, if the concentration of CO ₂ measured at the measurement locations (S) formed throughout a single flowerpot 550 is lower than a predetermined reference, it is provided in the supply pipe 120 corresponding to the corresponding flowerpot 550 It can be operated in a way to further open the supplied valve 140. In other cases, for example side said connection ends (120a) in which one of the pots 550, as previously described the CO ₂ concentration is appropriate or slightly excessive one said closed end (120b) p CO ₂ concentration is below one, the pollen ( By blowing air from the supply fan 130 corresponding to 550), air having a high concentration of CO ₂ may be blown toward the closed end 120b.

[3] Detailed configuration of supply pipe and supply hole

8 shows an embodiment of arrangement of a flower pot and a supply pipe. As shown, the distribution unit includes at least one supply pipe 120 installed in the width direction of the flower pot 550 per each flower pot 550, and the width of the flower pot 550 is greater than or equal to a predetermined standard. It can be formed so that a plurality of the back side is installed. More specifically, in this case, a predetermined criterion of the width of the flower pot 550 may be 2 m. That is, the number of the supply pipes 120 in the width direction is preferably so that the width of the flower pot 550 increases by one for 2 m. Specifically, if the width of the flower pot 550 is 2 m or less, one, If it is in the range of 2 to 4m, it is two.

9 is a detailed bottom view of the CO ₂ supply pipe, and FIG. 10 shows several embodiments of the CO ₂ supply pipe. 9 and 10 are cross-sectional views taken vertically with respect to the extending direction of the main pipe 110, that is, AA′ cross-sectional views in FIG. 2.

The main pipe 110 is preferably made able to be a sufficiently large amount of CO ₂ flow to better distribute the CO ₂ to a plurality of the supply pipe 120. In consideration of this point, it is preferable that the main pipe 110 has a larger diameter than the supply pipe 120.

On the other hand, if the diameter of the supply hole 125 is too large, too much CO ₂ is discharged from the side close to the connection end 120a, and thus there is a concern that the flow rate of CO ₂ flowing to the closed end 120b is insufficient. In addition, when the diameter of the supply hole 125 is too large compared to the diameter of the supply pipe 120, the rigidity of the supply pipe 120 may be weakened. On the contrary, if the diameter of the supply hole 125 is too small, there is a problem that a sufficient amount of CO ₂ cannot be discharged.

In addition, as shown in FIG. 9, a plurality of supply holes 125 are all arranged at the same interval in the supply pipe 120. At this time, the degree of uniformity of the CO ₂ concentration around the supply location (P) varies depending on how densely the supply holes 125 are arranged, and the number of the supply holes 125 is a design that should be considered very important. Element. In addition, like the number of supply holes 125 formed per one supply pipe 120, the number of supply pipes 120 connected per one main pipe 110 should also be considered important. to be.

In order to supply CO ₂ smoothly, the diameter and number of the main pipe 110, the supply pipe 120, and the supply hole 125 must be designed in accordance with each other. 9, the diameter of the main pipe 110 is D, the diameter of the supply pipe 120 is d, the number of supply pipes 120 (per one of the main pipes 110) is N, and the When the diameter of the supply hole 125 is a and the number of supply holes 125 is n (per one supply pipe 120), the main pipe 110, the supply pipe 120, and the supply It is preferable to satisfy all of the following Equations 1 and 2 between the diameter and the number of holes 125.

… (식 1)

… (Equation 1)

… (식 2)

… (Equation 2)

Equation 1 relates to the relationship between the main pipe 110 and the supply pipe 120, wherein the cross-sectional area (πD ² /4) of the main pipe 110 is a plurality of (N) of the supply pipe 120 It must be greater than the sum of the cross-sectional areas (πd ² /4) (N*πD ² /4). If Equation 1 is not satisfied, the CO ₂ circulating through the main pipe 110 is not sufficiently uniformly distributed to the plurality of supply pipes 120.

Equation 2 relates to the relationship between the supply pipe 120 and the supply hole 125. Similar to Equation 1, the cross-sectional area (πd ² /4) of the supply pipe 120 is a plurality of (n) That is, it should be larger than the sum (n*πD ² /4) of the areas (πa ² /4) of the supply hole 125. When Equation 2 is not satisfied, as in Equation 1, CO ₂ circulating through the supply pipe 120 is not sufficiently uniformly distributed to the plurality of supply holes 125.

Here, the values of N and n are values that can be naturally predetermined according to the size of the plant plant and the number of potted plants arranged in the plant plant. At this time, the values of D, d, and a that can satisfy Equations 1 and 2 can be very diverse. However, when considering a practical problem such as an actual installation, the selection of D or d can be prevented from increasing indefinitely by setting the minimum value satisfying the above equation.

FIG. 10 shows an exemplary arrangement of supply holes. First, in FIG. 10(A), a plurality of supply holes 125 are all within the range from the connection end 120a to the closed end 120b. It shows that they are arranged at equal intervals. In this case, when the supply pipe 120 is manufactured, it is only necessary to form the supply holes 125 at equal intervals, so if the supply pipe 120 is manufactured in advance for a very long time, it is cut to an appropriate length as desired and used. Bar, there is an advantage of very high manufacturing ease.

10(B) shows several embodiments of the spacing of the supply holes 125 according to the total length of the supply pipe 120. The number of the supply holes 125 is determined according to Equation 2 described above, but the plurality of supply holes 125 are, as shown in FIG. 10(B), as a specific embodiment, of the supply pipe 120 When the total length is less than 25m, it is arranged at 1m intervals, when the total length of the supply pipe 120 is within the range of 25m to 50m, it is arranged at 2m intervals, and when the total length of the supply pipe 120 is within the range of 50m to 100m It can be arranged at 3m intervals. In general, in the present invention, it is preferable that the supply holes 125 are arranged at tighter intervals as the overall length of the supply pipe 120 is shorter.

11 is a detailed cross-sectional view of a CO ₂ supply pipe, and FIG. 12 shows an embodiment of a CO ₂ supply and use state, respectively. The supply hole 125, at one supply position (P), when the width of the flower pot 550 is less than a predetermined standard as shown in Fig. 12 (A), one supply as shown in Fig. 11 (A) One supply hole 125 per position P may be arranged vertically below the supply pipe 120. Or, when the width of the flower pot 550 is greater than or equal to a predetermined standard as shown in FIG. 12(B), a pair of the supply holes 125 per supply position P as shown in FIG. 11(B) It may be arranged so as to open at a predetermined angle from the lower side of the pipe 120.

If the width of the flower pot 550 is narrow, the supply hole 125 alone can adequately supply CO ₂ to the plant. However, when the width of the flower pot 550 is widened, the plant immediately below the supply hole 125 In comparison, plants placed at both ends may not receive a sufficient amount of CO ₂ . However, if the direction of CO ₂ discharge is widened by forming two supply holes 125 as shown in FIG. 11(B) and forming them at appropriate intervals, a sufficient amount of CO ₂ can be smoothly supplied to plants placed at both ends. I can.

At this time, the standard of the width (W) of the flower pot 550 may be 2m, and FIG. 11(A) shows a case where only one supply hole 125 is formed when W is less than 2m (W<2m). 11(B) shows a case in which two supply holes 125 are formed when W is greater than or equal to 2m (W≥2m). This criterion may be the same as the criterion for determining the number of arrangements of the supply pipes 120 in the width direction per one of the flower pots 550. In addition, it is preferable that the angle between the pair of supply holes 125 is formed within a range of 60 degrees to 120 degrees.

The present invention is not limited to the above-described embodiments, and the scope of application thereof is diverse, as well as anyone with ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible.

100: CO ₂ supply device of plant factory
110: main pipe 120: supply pipe
125: supply hole 130: supply fan
140: supply valve 150: concentration sensor
200: Trigen system 210: outlet
500: cabinet 510: shelf
520: lighting 550: flower pot

Claims (9)

Extending in one direction are installed in the plant, plant comprising a plurality of pots with a plurality of plants were planted along the extending direction, plant factory producing the trad now supplied to distribute the CO ₂ from the system to the plant to discharge into the outlet for CO ₂ In the CO ₂ supply device,
A main pipe in the form of a pipe in communication with the discharge port, through which CO ₂ is circulated, and a plurality of branch portions corresponding to the flower pots are formed;
A supply pipe having one end in communication with the branch and in the form of a pipe having a plurality of supply holes to discharge and supply CO ₂ to the plant, extending in the extending direction of the potted plant and disposed above or below the plant,
A supply fan formed on the branch side to supply CO ₂ by blowing it to the plant
A distribution unit including at least one selected from among;
CO ₂ supply device of a plant factory comprising a.
The method of claim 1, wherein the distribution unit,
Only the supply pipe disposed on the upper side per each flower pot is installed, or
Only the supply pipe disposed on the lower side per each of the flower pots is installed, or
Only the supply fan is installed per one of the flower pots, or
The supply pipe and the supply fan disposed on the upper side per each flower pot are installed, or
CO ₂ supply device of a plant factory, characterized in that formed so as to install the supply pipe and the supply fan disposed at the lower side per each of the flower pots.
The method of claim 1, wherein the distribution unit,
All of the plurality of supply holes are arranged at the same interval,
When the diameter of the main pipe is D, the diameter of the supply pipe is d, the number of supply pipes is N, the diameter of the supply hole is a, and the number of supply holes is n,
CO ₂ supply device of a plant factory, characterized in that formed to satisfy the following equation.

The method of claim 3, wherein the plurality of supply holes,
CO ₂ supply device of a plant factory, characterized in that the shorter the total length of the supply pipe is arranged at more dense intervals.
The method of claim 1, wherein the distribution unit,
At least one supply pipe is installed in the width direction of the flower pot per each of the flower pots,
CO ₂ supply device of a plant factory, characterized in that formed to be installed in a plurality of the width of the flower pot is more than a predetermined standard.
The method of claim 1, wherein the supply hole,
At one supply location,
When the width of the flower pot is less than a predetermined standard, one supply hole per one supply position is disposed vertically below or above the supply pipe,
CO ₂ supply device of a plant factory, characterized in that when the width of the flower pot is greater than or equal to a predetermined standard, a pair of supply holes per supply position are arranged to open at a predetermined angle below or above the supply pipe. .
The method of claim 1, wherein the CO ₂ supply device of the plant factory,
A plurality of supply valves provided at a connection portion between the main pipe and the supply pipe to control a flow rate of CO ₂ circulating through the supply pipe;
CO ₂ supply device of a plant factory, characterized in that it further comprises.
The method of claim 1, wherein the CO ₂ supply device of the plant factory,
A plurality of concentration sensors disposed between the supply pipe and the plant to measure the concentration of CO ₂ ;
CO ₂ supply device of a plant factory, characterized in that it further comprises.
In the CO ₂ supply method of a plant factory using the CO ₂ supply device of the plant factory according to claim 1,
The CO ₂ supply device of the plant factory,
A plurality of supply valves provided at a connection portion between the main pipe and the supply pipe to control a flow rate of CO ₂ circulating through the supply pipe;
A plurality of concentration sensors disposed between the supply pipe and the plant to measure the concentration of CO ₂ ;
It further includes,
The CO ₂ supply method of the plant factory,
Distributing the CO ₂ distributed to the main pipe to a plurality of the distribution units;
Supplying the CO ₂ distributed to the distribution unit to the plant;
Measuring the concentration of CO ₂ at a plurality of measurement locations by a plurality of the concentration sensors;
Operating the supply valve or the supply fan so that when the measured CO ₂ concentration deviates from a predetermined standard, the supply amount of CO ₂ to a supply position close to the measurement position is increased or decreased;
CO ₂ supply method of a plant factory comprising a.

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