JP2013021945A - Spraying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spraying system capable of supplying a plurality of liquid to plants while suppressing the increase of device scale as much as possible.SOLUTION: This spraying system 1 is provided with: a water tank 5; a chemical tank 6; electrolytic water tanks 7, 8; a selector valve 10; a sub tank 15; liquid-supplying systems 30i (wherein, i is a natural number of ≥1); and a control system. The selector valve 10 switches the liquid to be flown to the liquid-supplying systems 30i to any one of water Wa, a liquid state chemical ac, acidic water aw and alkaline water iw. The liquid-supplying systems 30i are provided with at least a plurality of spraying nozzles 31, a plurality of circuit motor valves 35ij, flowing pipes 36i and a fluid machine 45i as one system, and spraying the liquid outputted from the selector valve 10 to a defined partitions 70i that is the defined partitions, respectively. The control system decides the kind of liquid and controls the object to be controlled so that the decided kind of liquid is sprayed by the spray nozzle 31.

Description

  The present invention relates to a spray system.

2. Description of the Related Art Conventionally, there is a known plant factory that systematically produces plants planted on a cultivation bed in an at least semi-enclosed space in which the internal environment is controlled.
In this kind of plant factory, as a system for supplying water to the plant being cultivated, a tank for storing water, a pipe connected to the tank and disposed along the cultivation bed of the plant, A spray system provided with a fine fog nozzle that is provided and discharges fine water droplets is used (see, for example, Patent Document 1).

JP 2010-051190 A

  By the way, when cultivating a plant in a plant factory, it is necessary to supply agricultural chemicals in addition to water to the plant. Thus, in order to supply agricultural chemicals in addition to water to plants, two types of spraying systems, that is, a spraying system for supplying water and a spraying system for supplying agricultural chemicals, can be arranged in a plant factory. Conceivable.

However, when two systems of spray systems are arranged, the scale of the apparatus increases, and problems such as an increase in the space required for arranging these two systems of spray systems arise.
Then, an object of this invention is to provide the spray system which can supply a some liquid to a plant, suppressing the increase in an apparatus scale as much as possible.

A spray system made to achieve the above object includes a water tank, a chemical tank, a switching valve, a liquid supply system, and a control unit.
The water tank stores water, and the drug tank stores liquid drug. At least a water tank and a chemical tank are connected to the switching valve, and the switching valve switches the type of liquid to be output in accordance with an external command.

  In the spray system of the present invention, the liquid supply system sends at least one spray nozzle that sprays liquid, a flow pipe that forms a flow path to the spray nozzle, and one liquid output from the switching valve to the flow pipe. The fluid machine to be used is defined as one system for each defined section which is a defined section.

  Furthermore, the control unit controls the switching valve and the fluid machine so that the type of liquid output from the switching valve is switched and the liquid output from the switching valve is sprayed from the spray nozzle when the prescribed condition is satisfied. To do.

  According to such a spray system, the water stored in the water tank or the liquid medicine stored in the medicine tank can be supplied to one liquid supply system while switching. As a result, according to the spray system of the present invention, water and a medicine can be sprayed (sprayed) on a plant even with a single liquid supply system.

That is, according to the present invention, it is possible to provide a spray system capable of supplying a plurality of liquids to a plant while suppressing an increase in apparatus scale as much as possible.
The control unit in the spray system of the present invention executes a chemical spraying process when the first condition, which is one of the prescribed conditions, is satisfied, and when the second condition, which is one of the prescribed conditions, satisfies the second condition. You may perform a fog cooling process (Claim 2).

  In the medicine spraying process, the switching valve and the fluid machine are controlled so that the type of liquid sprayed from the spray nozzle is the liquid medicine stored in the medicine tank. In the fine fog cooling process, the switching valve and the fluid machine are controlled so that the type of liquid sprayed from the spray nozzle is the water stored in the water tank.

According to such a spray system, the medicine can be sprayed by executing the medicine spraying process, and the water can be sprayed by executing the fine fog cooling process.
Furthermore, the control part in the spray system of this invention may perform the washing | cleaning process which wash | cleans a liquid supply system after execution of a chemical | medical agent spraying process (Claim 3).

According to such a spray system, the liquid supply system can be washed, and the spray nozzle can be prevented from being clogged with the medicine.
The spray system in the present invention may include an acidic water tank that stores acidic water and is connected to a switching valve, and an alkaline water tank that stores alkaline water and is connected to the switching valve.

  In this case, the switching valve may use acidic water stored in the acidic water tank and alkaline water stored in the alkaline water tank as one of the types of liquids output by the switching valve. The control unit is configured so that the type of liquid sprayed from the spray nozzle is such that the acidic water stored in the acidic water tank and the alkaline water stored in the alkaline water tank are continuous in random order. Control of the machine may be executed as a cleaning process (claim 4).

According to such a spray system, since the liquid used in the cleaning process is neutralized, the liquid supply system can be prevented from corroding.
The drug tank may store an acidic liquid or an alkaline liquid as a liquid drug. In this case, the spray system of the present invention may have a neutralizing water tank that stores a neutralizing agent that is a liquid that neutralizes the drug and is connected to the switching valve.

  Furthermore, in this case, the neutralizing agent stored in the neutralizing water tank is set as one of the types of liquid output by the switching valve, and the control unit determines that the type of liquid sprayed from the spray nozzle is determined by the chemical spraying process. Control of the switching valve and the fluid machine may be executed as a cleaning process so as to be a neutralizing agent for neutralizing the sprayed medicine (Claim 5).

That is, in the spray system of the present invention, an acidic or alkaline liquid can be sprayed as a medicine.
In this case, the neutralizing agent that neutralizes the chemical sprayed in the chemical spraying process is supplied to the liquid supply system by the cleaning process, so that the liquid supply system can be more reliably prevented from corroding.

  By the way, the spray system of this invention may be provided with the temperature measurement means which measures the temperature of a regulation area. In this case, the control unit may control the switching valve on the second condition that the measurement result of the temperature measuring unit is equal to or higher than a predetermined temperature specified in advance (Claim 6).

In such a spray system, when the temperature of the specified section becomes equal to or higher than the specified temperature, the fine fog cooling process is executed.
Therefore, according to the spray system of the present invention, the temperature of the defined section can be prevented from continuously becoming higher than the defined temperature, and the temperature of the defined section can be maintained at the optimum temperature.

In the spray system of the present invention, a sub-tank that stores the liquid output from the switching valve may be provided on the flow path from the switching valve to the spray nozzle.
That is, according to such a spray system, the sub tank can function as a liquid adjustment tank.

  The spray system of the present invention may include an acidic water tank that stores acidic water and is connected to the switching valve, and an alkaline water tank that stores alkaline water and is connected to the switching valve. In this case, the switching valve may use the acidic water stored in the acidic water tank and the alkaline water stored in the alkaline water tank as one of the types of liquids output by the switching valve.

  According to such a spraying system, it is possible to promote the growth of plants or reduce the amount of medicine used by spraying acidic water onto plants. Moreover, it can suppress that the soil which grows a plant becomes acidic by spraying alkaline water.

It is a figure which shows the structure of the spraying system to which this invention was applied. It is a block diagram which shows the control system of the fine fog cooling system in embodiment. It is a flowchart which shows the process sequence of the spray process which a control part performs. It is a flowchart which shows the process sequence of the chemical | medical agent dispersion | distribution process which a control part performs. It is a flowchart which shows the process sequence of the washing process which a control part performs. It is a figure which shows the modification of a spraying system.

Embodiments of the present invention will be described below with reference to the drawings.
<Overall system configuration>
First, FIG. 1 is a diagram showing an overall configuration of a spray system to which the present invention is applied.

  The spray system 1 is a system disposed in a plant factory that systematically produces (cultivates) a plant planted in a cultivation bed (or cocoon) in an at least semi-enclosed space in which the internal environment is controlled. In addition, a liquid such as water Wa or medicine ac is sprayed.

The spray system 1 includes a water tank 5, a chemical tank 6, electrolyzed water tanks 7 and 8, a switching valve 10, a sub tank 15, a liquid supply system 30 _i (i is a natural number of 1 or more), a control. System 100 (see FIG. 2).

  The water tank 5 is a tank that stores the water Wa. The medicine tank 6 is a tank for storing a liquid medicine ac. In the present embodiment, the liquid drug ac is, for example, an agrochemical that exterminates harmful insects that are harmful to the plant being cultivated.

  The electrolyzed water tank 7 is configured to be capable of generating strong acid water aw that is one of electrolyzed water, and stores the generated strong acid water (that is, acid water) aw. The electrolyzed water tank 8 is configured to be capable of generating alkali ion water (that is, alkaline water) iw, which is one of electrolyzed water, and stores the generated alkali ion water iw.

  The switching valve 10 is a valve that selects one of the fluids flowing through the pipes connected to the valve 10 and outputs the selected fluid to the subsequent stage. In addition, the some pipe connected to the switching valve 10 of this embodiment is connected to the water tank 5, the chemical | medical agent tank 6, the electrolyzed water tank 7, and the electrolyzed water tank 8, respectively. That is, the switching valve 10 switches the liquid that flows to the sub tank 15 connected to the switching valve 10 to any one of water Wa, liquid medicine ac, acidic water aw, and alkaline water iw. It is.

The sub tank 15 is a tank that stores the fluid (liquid) output from the switching valve 10.
Liquid supply system 30 _i, respectively, to the defined a compartment defined compartments 70 _i, a mechanism for spraying a liquid stored in the sub tank 15, is provided for each defined partition 70 _i. The defined section 70 _i is provided with a setting circuit 72 _ij (j is a natural number of 1 or more) that is narrower than the defined section 70 _i , and the liquid supply system 30 _i is provided for each setting circuit 72 _ij. In addition, the liquid is sprayed.

To achieve this, the liquid supply system 30 _i includes a plurality of spray nozzles 31, a plurality of circuit motor valves 35 _ij , a flow pipe 36 _i , a fluid machine 45 _i , a return pipe 48 _i , a pressure release The valve 49 _i is provided as one system.

Among these, each of the spray nozzles 31 is a well-known nozzle that sprays liquid in a mist form, and a plurality of spray nozzles 31 are arranged along the arrangement of cultivation beds (or straws) for each setting circuit 72 _ij . Flow pipe 36 _i is a pipe forming a flow path from the sub tank 15 to the spray nozzle 31, a main pipe 37 _i directed from the sub tank 15 to define compartments 70 _i, directed from the main pipe 37 _i to each setting circuit 72 _ij A liquid pipe 38 _ij .

The circuit motor valve 35 _ij is a valve for switching the setting circuit 72 _ij for spraying liquid, and is provided on the liquid pipe 38 _ij of the flow pipe 36 _i . The fluid machine 45 _i is a compressor (or pump) that sends out one liquid output from the switching valve 10, and consequently, the liquid stored in the sub tank 15 to the flow pipe 36 _i .

The return pipe 48 _i is a pipe that forms a flow path in which a part of the liquid delivered by the fluid machine 45 _i flows to the sub tank 15. Depressurization valves 49 _i is a valve provided on the feedback pipe 48 _i, by being opened to lower the pressure in the feedback pipe 48 _i and the flow pipe 36 in the _i.
<Regarding the control system of the spray system>
Here, FIG. 2 is a block diagram showing a configuration of a control system in the spray system.

  In the present embodiment, the control system 100 of the spray system 1 configures the spray system 1 according to the sensor group 102 that acquires state information including at least information indicating the state of the spray system 1 and the state information acquired by the sensor group 102. Among these units, a control unit 105 that controls each unit defined as the control target 103 is provided.

The sensor group 102 includes a temperature sensor 110 that detects the temperature of each defined section 70 _i , a water storage sensor 111 that detects the amount of water stored in the water tank 5, and the amount of liquid stored in the drug tank 6 (hereinafter, also referred to as drug amount). A chemical sensor 112 that detects the amount of liquid stored in the electrolyzed water tank 7 (hereinafter also referred to as acidic water amount). Further, the sensor group 102 includes an alkaline water amount sensor 114 for detecting the amount of liquid stored in the electrolyzed water tank 8 (hereinafter also referred to as alkaline water amount) and the amount of liquid stored in the sub tank 15 (hereinafter also referred to as storage amount). A storage amount sensor 115 that detects the input), and an operation reception unit 116 that detects and receives an external input (for example, button operation).

Each sensor 110, 111, 112, 113, 114, 115, 116 included in the sensor group 102 acquires a detection result as state information.
The control unit 105 includes a storage unit 106 that stores a processing program and various data, and a control circuit 107 that controls the control target 103 in accordance with the processing program stored in the storage unit 106. In the present embodiment, the control target 103 includes at least the switching valve 10, the fluid machine 45 _i , the circuit motor valve 35 _i , and the pressure relief valve 49 _i .

The storage unit 106 defines a spray process for determining the type of liquid and controlling the control target 103 so that the liquid of that type is sprayed from the spray nozzle 31 as a program executed by the control unit 105. Stored programs.
<About spray treatment>
Next, the spray process performed by the control unit 105 will be described.

Here, FIG. 3 is a flowchart showing the processing procedure of the spray processing executed by the control unit.
This spraying process is started when the control unit 105 is activated.
As shown in FIG. 3, when the spray process is started, first, it is determined whether or not to execute the medicine spraying process for spraying the liquid medicine ac stored in the medicine tank 6 onto the specified section 70 _i. Determine (S110). In S110 of the present embodiment, the determination is made according to a medicine spraying flag indicating whether or not the medicine spraying process can be executed. In the medicine spraying flag of the present embodiment, switching between permitting execution of the medicine spraying process and not permitting execution of the medicine spraying process may be set at a predetermined time, You may set according to the input from the outside.

As a result of the determination in S110, when the medicine spraying process is not executed, that is, when the medicine spraying flag indicates that the medicine spraying process is not permitted (S110: NO), the regulation detected by the temperature sensor 110 It is determined whether or not the temperature of the section 70 _i is equal to or higher than a preset temperature Thte (S120).

  If the temperature detected by the temperature sensor 110 is lower than the set temperature Thte as a result of the determination in S120 (S120: NO), the process returns to S110. On the other hand, if the temperature detected by the temperature sensor 110 is equal to or higher than the set temperature Thte (S120: YES), is the water storage amount of the water tank 5 based on the detection result of the water storage sensor 111 equal to or higher than a predetermined value Thw specified in advance? It is determined whether or not (S130).

  If the result of determination in S130 is that the amount of stored water is less than the prescribed value Thw (S130: NO), the process returns to S110. On the other hand, if the amount of stored water is equal to or greater than the specified value Thw (S130: YES), the switching valve 10 is opened so that the liquid output from the switching valve 10 becomes the water Wa stored in the water tank 5 (S140). .

  Subsequently, it is determined whether or not the storage amount of the sub tank based on the detection result of the storage amount sensor 115 is equal to or greater than a preset set value Th (S150). As a result of the determination in S150, if the storage amount is less than the set value Th (S150: NO), the process waits until the storage amount becomes equal to or greater than the set value Th.

On the other hand, if the result of determination in S150 is that the storage amount is equal to or greater than the set value Th (S150: YES), one circuit motor valve 35 _ij so that the liquid stored in the sub tank 15 is sprayed from the spray nozzle 31. Is opened and the fluid machine 45 _i is driven (S160). Thereby, the water Wa stored in the water tank 5 is sprayed to one setting circuit 72 _ij in one prescribed section 70 _i .

Then, it is determined whether or not the spraying of the water Wa stored in the water tank 5 is completed for all the setting circuits 72 _ij in the defined section 70 _i (S170). If the spraying of the water Wa stored in the water tank 5 is not completed for all the setting circuits 72 _{ij as} a result of the determination in S170 (S170: NO), the opened circuit motor valve 35 _ij is sealed and the new circuit motor valve 35 _ij is opened (S180). Thereafter, the process returns to S160.

That is, in S180 of the present embodiment, the circuit motor valve _35ij is controlled so that the water Wa is sprayed on the setting circuit _72ij that has not been sprayed with the water Wa.
On the other hand, the result of the determination in S170, for all the setting circuit 72 _ij at a defined compartment 70 _i, if spraying water Wa is completed (S170: YES), for all the defined compartments 70 _i, It is determined whether or not the spraying of the water Wa stored in the water tank 5 has been completed (S190). If the result of determination in S190 is that spraying of water Wa has not been completed for all of the defined sections 70 _i (S190: NO), the process returns to S160.

In step S160, the operation of the fluid machine 45 _i that has been driven is stopped and the operation of a new fluid machine 45 _i is started. That is, spraying of the water Wa stored in the water tank 5 is started on the new specified section 70 _i .

Note that, as a result of the determination in S190, if the spraying of the water Wa has been completed for all the defined sections 70 _i (S190: YES), the operation of all the fluid machines 45 _i is stopped and all of the fluid machines 45 _i are stopped. After the spraying of the water Wa is completed on the specified section 70 _i , it is determined whether or not a spray stop time specified in advance has elapsed (S200). As a result of the determination in S200, if the spray pause time has not elapsed (S200: NO), the process waits until the spray pause time elapses. When the spray pause time has elapsed (S200: YES), it is determined whether or not the temperature of the defined section 70 _i detected by the temperature sensor 110 is equal to or higher than the set temperature Thte (S210).

  If the temperature detected by the temperature sensor 110 is equal to or higher than the set temperature Thte as a result of the determination in S210 (S210: YES), the process returns to S160 and sprays water Wa again. On the other hand, if the temperature detected by the temperature sensor 110 is lower than the set temperature Thte (S210: NO), the process returns to S110.

As a result of the determination in S110, when it is determined that the medicine spraying process is to be executed, that is, when the medicine spraying flag indicates that the medicine spraying process is permitted (S110: YES), the medicine spraying is performed. Processing is executed (S220). Thereafter, a cleaning process for cleaning the liquid supply system 30 _i is executed (S230), and the process proceeds to S120.

In other words, a spray process, if the temperature of the defined compartments 70 _i is set temperatures Thte above, such provision to a temperature of the compartment 70 _i is less than the set temperature Thte, the spray nozzle 31 the water Wa, which is stored in the water tank 5 Spray from.
<About chemical spraying>
Next, the medicine spraying process activated in S220 of the spray process will be described.

Here, FIG. 4 is a flowchart showing a processing procedure of the medicine spraying process.
As shown in FIG. 4, when the medicine spraying process is started, first, it is determined whether or not the amount of medicine in the medicine tank 6 based on the detection result of the medicine sensor 112 is equal to or greater than a predetermined value Tha. Determination is made (S510).

If the result of determination in S510 is that the amount of drug is less than the prescribed value Tha (S510: NO), execution of this drug spraying process is terminated, and the process proceeds to S230 of spraying (ie, cleaning process). On the other hand, if the amount of medicine is equal to or greater than the specified value Tha (S510: YES), a cleaning drainage process for cleaning the sub tank 15 and the liquid supply system 30 _i is executed (S520).

In the cleaning waste water treatment of the present embodiment, specifically, the circuit motor valve 35 _i that is opened and the fluid machine 45 _i are switched until the liquid stored in the sub tank 15 is exhausted, that is, until the sub tank 15 is empty. And the release of the pressure relief valve 49 _i are repeatedly executed.

Subsequently, the switching valve 10 is opened so that the liquid output from the switching valve 10 becomes the liquid medicine ac stored in the medicine tank 6 (S530).
Subsequently, it is determined whether or not the storage amount of the sub tank 15 based on the detection result of the storage amount sensor 115 is equal to or greater than the set value Th (S540). As a result of the determination in S540, if the storage amount is less than the set value Th (S540: NO), the process waits until the storage amount becomes equal to or greater than the set value Th. On the other hand, if the storage amount is equal to or greater than the set value Th (S540: YES), one circuit motor valve is used so that the liquid stored in the sub tank 15 (that is, the liquid medicine ac) is sprayed from the spray nozzle 31. 35 _ij is opened and the fluid machine 45 _i is driven (S550). As a result, the liquid medicine ac stored in the medicine tank 6 is sprayed on one setting circuit 72 _ij in one prescribed section 70 _i .

Then, it is determined whether or not the spraying of the liquid medicine ac stored in the medicine tank 6 has been completed for all the setting circuits 72 _ij in the defined section 70 _i (S560). A result of the determination in the S560, for all setting circuit 72 _ij, if spraying of liquid drug ac is not completed (S560: NO), open seals the circuit motor valve 35 _ij was The new circuit motor valve _35ij is opened (S570). Thereafter, the process returns to S550.

That is, in S570 of the present embodiment, the circuit motor valve _35ij is controlled so that the liquid medicine ac is sprayed on the setting circuit _72ij that has not been sprayed with the liquid medicine ac.

On the other hand, as a result of the determination in S560, if spraying of the liquid medicine ac is completed for all the setting circuits 72 _ij in the defined section 70 _i (S560: YES), all the defined sections 70 _i are filled. On the other hand, it is determined whether or not the spraying of the liquid medicine ac stored in the medicine tank 6 has been completed (S580). As a result of the determination in S580, if spraying of the liquid drug ac stored in the drug tank 6 is not completed for all the defined sections 70 _i (S580: NO), the process returns to S550.

In S550 thus shifted, the operation of the fluid machine 45 _i that has been driven is stopped and the operation of a new fluid machine 45 _i is started. That is, spraying of the liquid medicine ac stored in the medicine tank 6 is started on the new defined section 70 _i .

Note that, as a result of the determination in S580, if the spraying of the liquid medicine ac is completed for all the defined sections 70 _i (S580: YES), the operation of all the fluid machines 45 _i is stopped. Then, after the spraying of the liquid medicine ac is completed with respect to all the defined sections 70 _i , it is determined whether or not a medicine spraying pause time defined in advance has elapsed (S590). As a result of the determination in S590, if the drug spray pause time has not elapsed (S590: NO), the process waits until the drug spray pause time elapses. When the medicine spray pause time has elapsed (S590: YES), the process proceeds to S230 of the spray process, that is, the cleaning process.

That is, in the medicine spraying process of the present embodiment, the kind of liquid sprayed from the spray nozzle 31 is applied to the medicine tank 6 on the first condition that the medicine spraying flag indicates that the medicine spraying process is permitted to be executed. The control target 103 is controlled so that the stored liquid medicine ac is obtained.
<About cleaning treatment>
Next, the cleaning process activated in S230 of the spray process will be described.

Here, FIG. 5 is a flowchart showing the procedure of the cleaning process.
As shown in FIG. 5, when the cleaning process is started, first, each of the acidic water amount detected by the acidic water amount sensor 113 and the alkaline water amount detected by the alkaline water amount sensor 114 is defined in advance. It is determined whether or not the value is equal to or greater than the value Thb (S710). As a result of the determination in S710, if each of the acidic water amount and the alkaline water amount is less than the specified value Thb (S710: NO), the main cleaning process is terminated, and the process proceeds to S120 of the spraying process.

On the other hand, as a result of the determination in S710, if each of the acidic water amount and the alkaline water amount is equal to or greater than the specified value Thb (S710: YES), a cleaning waste water treatment for cleaning the sub tank 15 and the liquid supply system 30 _i is executed (S720). .

Subsequently, the switching valve 10 is opened so that the liquid output from the switching valve 10 becomes alkaline water stored in the electrolyzed water tank 8 (S730).
Subsequently, it is determined whether or not the storage amount (that is, the storage amount of alkaline water) of the sub tank 15 based on the detection result of the storage amount sensor 115 is equal to or greater than the set value Th (S740). As a result of the determination in S740, if the stored amount is less than the set value Th (S740: NO), the process waits until the stored amount becomes equal to or greater than the set value Th. On the other hand, as a result of the determination in S740, if the storage amount is equal to or greater than the set value Th (S740: YES), the liquid stored in the sub tank 15 (that is, alkaline water iw) is sprayed from the spray nozzle 31. One circuit motor valve 35 _ij is opened to drive the fluid machine 45 _i (S750). Thus, for a single setting circuit 72 _ij in one defined zone 70 _i, alkaline water iw is sprayed which is stored in the electrolytic water tank 8.

Then, it is determined whether or not the spraying of the alkaline water iw stored in the electrolyzed water tank 8 is completed for all the setting circuits 72 _ij in the defined section 70 _i (S760). A result of the determination in the S760, for all setting circuit 72 _ij, if not complete spraying of alkaline water iw (S760: NO), sealing the open circuit was motor valve 35 _ij new The circuit motor valve _35ij is opened (S770). Thereafter, the process returns to S750.

That is, in S770 of the present embodiment, the circuit motor valve _35ij is controlled so that the alkaline water iw is sprayed on the setting circuit _72ij that has not been sprayed with the alkaline water iw.

On the other hand, as a result of the determination in S760, if spraying of the alkaline water iw is completed for all the setting circuits 72 _ij in the defined section 70 _i (S760: YES), for all the defined sections 70 _i . Then, it is determined whether or not the spraying of the alkaline water iw stored in the electrolytic water tank 8 has been completed (S780). As a result of the determination in S780, if spraying of the alkaline water iw is not completed for all the defined sections 70 _i (S780: NO), the process returns to S750.

In S750 thus shifted, the operation of the fluid machine 45 _i that has been driven is stopped and the operation of a new fluid machine 45 _i is started. That is, spraying of the alkaline water iw stored in the electrolyzed water tank 8 is started with respect to the new defined section 70 _i .

Note that, as a result of the determination in S780, if the spraying of the alkaline water iw is completed for all the defined sections 70 _i (S780: YES), the operation of all the fluid machines 45 _i is stopped. At the same time, it is determined whether or not a first defined pause time has elapsed since the spraying of the alkaline water iw was completed for all the defined sections 70 _i (S790). If the result of determination in S790 is that the first pause time has not elapsed (S790: NO), the process waits until the first pause time has elapsed. On the other hand, if the result of determination in S790 is that the first pause time has elapsed (S790: YES), cleaning and drainage processing is executed (S800).

Subsequently, the switching valve 10 is opened so that the liquid output from the switching valve 10 becomes the acidic water aw stored in the electrolyzed water tank 7 (S810).
And it is determined whether the storage amount (namely, storage amount of acidic water ac) of the sub tank 15 based on the detection result of the storage amount sensor 115 is more than the setting value Th (S820). As a result of the determination in S820, if the stored amount is less than the set value Th (S820: NO), the process waits until the stored amount becomes equal to or greater than the set value Th. On the other hand, if the storage amount is equal to or greater than the set value Th (S820: YES), one circuit motor valve _35ij is used so that the liquid stored in the sub tank 15 (that is, acidic water aw) is sprayed from the spray nozzle 31. Is opened and the fluid machine 45i is driven (S830). Thus, for a single setting circuit 72 _ij in one defined compartments 70 _i, acidic water aw is sprayed which is stored in the electrolytic water tank 7.

Then, it is determined whether or not the spraying of the acidic water aw is completed for all the setting circuits 72 _ij in the defined section 70 _i (S840). As a result of the determination in S840, if the spraying of acidic water aw is not completed for all setting circuits 72 _ij (S840: NO), the opened circuit motor valve 35 _ij is sealed and a new one is sealed. The circuit motor valve _35ij is opened (S850). Thereafter, the process returns to S830.

That is, in S830 of the present embodiment, the circuit motor valve _35ij is controlled so that the acidic water aw is sprayed on the setting circuit _72ij that has not been sprayed with the acidic water aw.
On the other hand, as a result of the determination in S840, if the spraying of the acidic water aw is completed for all the setting circuits 72 _ij in the defined section 70 _i (S840: YES), for all the defined sections 70 _i . Then, it is determined whether or not the spraying of acidic water aw is completed (S860). As a result of the determination in S860, if spraying of the acidic water aw is not completed for all the defined sections 70 _i (S860: NO), the process returns to S830.

In step S830, the operation of the fluid machine 45 _i that has been driven is stopped and the operation of a new fluid machine 45 _i is started. That is, spraying of the acidic water aw stored in the electrolyzed water tank 7 is started with respect to the new defined section 70 _i .

As a result of the determination in S860, if spraying of the acidic water aw is completed for all the defined sections 70 _i (S860: YES), the operation of all the fluid machines 45 _i is stopped and all It is determined whether or not the second pause time has elapsed since the spraying of the acidic water aw on the specified section 70 _i is completed (S870). As a result of the determination in S870, if the second pause time has not elapsed (S870: NO), the process waits until the second pause time elapses. On the other hand, as a result of the determination in S870, when the second pause time has elapsed (S870: YES), the main cleaning process is terminated, and the process proceeds to S120 of the spray process.

That is, in the cleaning process of the present embodiment, the types of liquid sprayed from the spray nozzle 31 are in the order of alkaline water iw stored in the electrolyzed water tank 8 and acidic water aw stored in the electrolyzed water tank 7. Next, the control object 103 is controlled.
[Effect of the embodiment]
As described above, according to the spray system 1, by switching the liquid output from the switching valve 10, the water Wa stored in the water tank 5, the liquid drug ac stored in the drug tank 6, and the electrolyzed water The acidic water aw stored in the tank 7 and the alkaline water iw stored in the electrolytic water tank 8 can be supplied to one liquid supply system 30. As a result, according to the spray system 1, a plurality of liquids can be sprayed (sprayed) on a plant even with the single liquid supply system 30.

That is, according to the spray system 1, a plurality of liquids can be supplied to the plant while suppressing an increase in the apparatus scale as much as possible.
And if it is such a spray system 1, the environment in the semi-closed space where the said spray system 1 is arrange | positioned can be controlled easily, and the environmental control type agriculture in a high dimension can be implement | achieved.

By the way, in the spray system 1, the cleaning process is executed immediately after the medicine spraying process.
For this reason, according to the spray system 1, the liquid supply system 30 can be washed, and the spray nozzle 31 can be prevented from being clogged with the medicine ac.

  Moreover, in the cleaning process of the present embodiment, since the alkaline water iw and the acidic water aw are supplied to the liquid supply system 30 in this order, the liquid used in the cleaning process is neutralized, and the liquid supply system 30 is Corrosion can be suppressed.

In the spray system 1, the water Wa is sprayed while sequentially switching the setting circuit 72 _ij to spray the water Wa. For this reason, according to the spraying system 1, the water Wa can be sprayed evenly over a wide area with a small number of fluid machines 45.
[Other Embodiments]
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it is possible to implement in various aspects.

  For example, the spray system 1 includes the water tank 5, the drug tank 6, and the electrolyzed water tanks 7 and 8 as tanks for storing the liquid sprayed from the spray nozzle 31, but the spray system of the present invention includes. The tank is not limited to this. That is, in the spray system of the present invention, as in the spray system 150 shown in FIG. 6, the water tank 5, the drug tank 6, and the electrolyzed water tank 8 are used as tanks for storing the liquid sprayed from the spray nozzle 31. The electrolyzed water tank 7 may be omitted.

  In the spray system 150 shown in FIG. 6, strongly acidic water (acidic water) aw may be stored in the drug tank 6 as the liquid drug ac. The spray system 150 is configured in the same manner as the spray system 1 except for the chemical tank 6.

  According to such a spraying system 150, it is possible to promote the growth of the plant or reduce the amount of the medicine ac used by spraying the acidic water aw on the plant being cultivated. Moreover, it can suppress that the soil which grows a plant becomes acidic by spraying alkaline water iw.

  In addition, when the water Wa stored in the water tank 5 is stored in the sub tank 15 in the spraying process, if the liquid stored in the sub tank 15 is a liquid other than the water Wa, washing drainage may be executed. . That is, in the spraying process, when the liquid stored in the sub tank 15 is a liquid other than the water Wa, the liquid output from the switching valve 10 and stored in the sub tank 15 is stored in the water tank 5 in S140. Before the switching valve 10 is opened so as to become Wa, the cleaning drainage may be executed.

Furthermore, a spray process of the embodiment, as a condition for spraying water Wa, the temperature of the defined compartments 70 _i had a is at the set temperature Thte above, the condition for spraying water Wa in the spraying process, this For example, it may be when an execution command is input via the operation reception unit 116 or may be other conditions. That is, the spraying of the water Wa may be performed under any conditions.

  In the spraying process of the above embodiment, the condition for executing the drug spraying process is a case where the drug spraying flag indicates that the execution of the drug spraying process is permitted. However, in the spraying process, the drug spraying process is executed. The condition to perform is not limited to this, and may be, for example, when an execution command is input via the operation reception unit 116 or may be other conditions. Furthermore, the condition for executing the cleaning process may be when an execution command is input via the operation receiving unit 116.

Furthermore, in the above-described embodiment, the drug spraying process and the cleaning process are continuously performed. However, in the present invention, the drug spraying process and the cleaning process may not be performed continuously.
In the cleaning treatment of the above embodiment, the alkaline water iw and the acidic water aw are always sprayed continuously. In the present invention, the alkaline water iw and the acidic water aw are always sprayed continuously. For example, the alkaline water iw and the acidic water aw may be sprayed every other day. Furthermore, when the liquid medicine ac is the acidic water aw, the alkaline water iw may be simply sprayed in the cleaning process.

The user of the spray system 1 may set various rest times such as the spray rest time, the medicine spray rest time, the first rest time, and the second rest time via the operation reception unit 116.
[Correspondence between Embodiment and Claims]
Finally, the relationship between the description of the above embodiment and the description of the scope of claims will be described.

The water tank 5 in the above embodiment corresponds to the water tank described in the claims, the drug tank 6 in the above embodiment corresponds to the drug tank in the claims, and the switching valve in the above embodiment. 10 corresponds to the switching valve in the description of the claims. Further, the liquid supply system 30 _i in the above embodiment corresponds to the liquid supply system in the description of the claims, and the control unit 105 in the above embodiment corresponds to the control unit in the description of the claims.

  The medicine spraying process in the above embodiment corresponds to the medicine spraying process in the description of the claims, and the function obtained by executing S120 to S210 in the spraying process of the above embodiment is in the description of the claims. This corresponds to the function obtained by executing the fine fog cooling process.

  Further, the electrolyzed water tank 7 in the above embodiment corresponds to the acidic water tank in the description of the claims, and the electrolyzed water tank 8 in the above embodiment corresponds to the alkaline water tank in the description of the claims, The temperature sensor 110 in the above embodiment corresponds to the temperature measuring means in the claims.

DESCRIPTION OF SYMBOLS 1,150 ... Spray system 5 ... Water tank 6 ... Chemical tank 7, 8 ... Electrolyzed water tank 10 ... Switching valve 15 ... Sub tank 30 ... Liquid supply system 31 ... Spray nozzle 35 ... Circuit motor valve 36 ... Flow pipe 37 ... Main pipe 38 ... Liquid piping 45 ... Fluid machine 48 ... Return pipe 49 ... Pressure release valve 70 ... Regulation section 72 ... Setting circuit 100 ... Control system 102 ... Sensor group 103 ... Control target 105 ... Control unit 106 ... Storage unit 107 ... Control circuit 110 ... Temperature sensor 111 ... Water storage sensor 112 ... Drug sensor 113 ... Acid water amount sensor 114 ... Alkaline water amount sensor 115 ... Reserved water amount sensor 116 ... Operation receiving part Wa ... Water ac ... Acid water ac ... Drug aw ... Acid water iw ... Alkaline water

Claims (8)

A water tank for storing water;
A medicine tank for storing liquid medicine;
At least the water tank and the chemical tank are connected, and a switching valve that switches the type of liquid to be output in accordance with an external command;
One system includes at least one spray nozzle that sprays liquid, a flow pipe that forms a flow path to the spray nozzle, and a fluid machine that sends out one liquid output from the switching valve to the flow pipe. A liquid supply system for each defined section which is a defined section;
When the specified condition is satisfied, the type of liquid output from the switching valve is switched, and the switching valve and the fluid machine are controlled so that the liquid output from the switching valve is sprayed from the spray nozzle. A spray system comprising: a control unit. The controller is
When the first condition, which is one of the defined conditions, is satisfied, the switching valve and the liquid so that the type of liquid sprayed from the spray nozzle is a liquid medicine stored in the medicine tank. Perform a chemical spraying process to control the fluid machine,
When the second condition, which is one of the defined conditions, is satisfied, the switching valve and the fluid machine are arranged so that the type of liquid sprayed from the spray nozzle is water stored in the water tank. The fine fog cooling process to control is performed. The spray system of Claim 1 characterized by the above-mentioned. The controller is
The spray system according to claim 2, wherein a cleaning process for cleaning the liquid supply system is performed after the chemical spraying process. Acidic water is stored, and an acidic water tank connected to the switching valve;
An alkaline water tank for storing alkaline water and connected to the switching valve;
The switching valve is
The acidic water stored in the acidic water tank and the alkaline water stored in the alkaline water tank are one of the types of liquids output by the switching valve,
The controller is
The changeover valve and the fluid machine are such that the type of liquid sprayed from the spray nozzle is continuous in any order between the acidic water stored in the acidic water tank and the alkaline water stored in the alkaline water tank. The spray system according to claim 3, wherein the control is executed as the cleaning process. The drug tank is
As the liquid drug, an acidic liquid or an alkaline liquid is stored,
Storing a neutralizing agent that is a liquid for neutralizing the chemical, and a neutralized water tank connected to the switching valve,
The switching valve is
The neutralizing agent stored in the neutralizing water tank is one of the types of liquid output by the switching valve,
The controller is
Controlling the switching valve and the fluid machine is executed as the cleaning process so that the type of liquid sprayed from the spray nozzle becomes a neutralizing agent that neutralizes the drug sprayed by the drug spraying process. The spray system according to claim 3. Comprising temperature measuring means for measuring the temperature of the defined section;
The controller is
6. The switching valve is controlled based on the second condition that a measurement result obtained by the temperature measuring unit is equal to or higher than a predetermined temperature specified in advance. A spraying system as described in. The spray system according to any one of claims 1 to 6, further comprising: a sub-tank that stores liquid output from the switching valve on a flow path from the switching valve to the spray nozzle. Acidic water is stored, and an acidic water tank connected to the switching valve;
An alkaline water tank for storing alkaline water and connected to the switching valve;
The switching valve is
The acidic water stored in the acidic water tank and the alkaline water stored in the alkaline water tank are one of the types of liquids output by the switching valve. The spraying system described.

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