JP7104419B2 - Irrigation equipment - Google Patents

Description

The present invention relates to an irrigation device that supplies a fluid at a predetermined temperature to soil.

Various methods have been proposed as methods for irrigating the soil in which crops including plants such as strawberries are cultivated (for example, Patent Document 1). In Patent Document 1, a porous pipe connected to the water tank is embedded in the soil, the position of the water surface in the water tank is set slightly higher than the position of the porous pipe, and the water pressure in the water tank is slightly adjusted. I try to put pressure on it. As a result, even if a sudden change occurs in the external environment, stable irrigation of the soil using the water pressure difference becomes possible.

Japanese Unexamined Patent Publication No. 2011-055713

In some cases, the harvest time of crops, in other words, the progress of growth, is artificially controlled according to the demand from the market. For example, the standard harvest time for strawberries is April, but in many cases, strawberries are grown so that the harvest peaks around December, when demand for Christmas cakes is high. The integrated temperature used as an index showing the progress of growth may be calculated using the temperature of the water supplied to the soil. However, in the prior art including Patent Document 1, since raw water such as groundwater is supplied to the soil as it is, the operator cannot arbitrarily adjust the temperature of the water supplied to the soil according to the production plan of the crop. rice field.

Therefore, an object of the present invention is to provide an irrigation apparatus capable of controlling the growth of a crop by adjusting the temperature of the fluid supplied to the soil according to the production plan of the crop.

The irrigation system of the present invention has a regulated water supply pipeline to which the regulated water generated by adjusting the first fluid to a predetermined temperature is supplied, and a second fluid supply to which the second fluid is supplied. A mixture of the pipeline, the regulated water supplied from the regulated water supply pipeline, and the second fluid supplied from the second fluid supply pipeline is supplied and produced. The adjustment is provided with a mixed water supply pipeline in which a discharge port for supplying the mixed water to the soil is formed, and an adjustment water generating means for generating the adjustment water to be supplied to the adjustment water supply pipeline. The water generating means is based on a heating unit that heats the first fluid, a cooling unit that cools the first fluid, a setting unit that sets the temperature of the adjusted water to be generated, and a temperature set by the setting unit. A control unit that selects and controls the heating unit or the cooling unit is included, and a part of the mixed water supply pipeline is buried in the soil, and the control unit selects and controls the heating unit. In this case, when mixed water having a temperature higher than the target temperature to be supplied to the soil is generated at the mixing position of the adjusting water and the second fluid, and the control unit selects and controls the cooling unit, the production Mixed water having a temperature lower than the target temperature to be supplied to the soil is generated at the mixing position of the adjusted water and the second fluid, and the mixed water supply pipeline connects the connection portion with the second fluid supply pipeline. The first part extending toward the containing soil, the second part connected to the first part and buried in the soil, the third part connected to the second part and protruding from the soil to the ground side, and the above-mentioned It is the position of the first part exposed on the ground including the fourth part connected to the third part and formed with the discharge port, and is arranged at the connecting position with the second fluid supply pipeline. A fourth temperature sensor and a fifth temperature sensor arranged at the fourth portion are further provided, and the mixing position is set on the second fluid supply pipeline .

According to the present invention, the growth of crops can be controlled by adjusting the temperature of the fluid supplied to the soil.

The figure which shows typically the whole structure of the irrigation apparatus in one Embodiment of this invention. The figure which shows typically the whole structure of the irrigation apparatus in one Embodiment of this invention. A block diagram constituting a control unit included in the irrigation apparatus according to the embodiment of the present invention. The figure which shows the operating condition setting screen displayed on the touch panel provided in the irrigation apparatus in one Embodiment of this invention. The figure which shows the irrigation method by the irrigation apparatus in one Embodiment of this invention. The figure which shows the irrigation method by the irrigation apparatus in one Embodiment of this invention.

The overall configuration of the irrigation device (water supply device for soil) according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. The irrigation apparatus 1 has a function of supplying the mixed water 2 generated by mixing a plurality of types of fluids having different temperatures to the crop 5 (seedling) planted in the soil 4 which is the surface layer of the soil 3. Examples of the crop 5 include not only perennial plants such as strawberries but also various plants including annual plants such as squash.

In FIG. 1, the soil 4 is formed inside a facility 6 such as a vinyl house, which can set and control the temperature of a room partitioned from the outside world. Above the crop 5 planted in the soil 4, a part of the mixed water supply pipeline 24, which will be described later, is provided so as to extend in the planting direction of the crop 5.

In FIG. 2, the irrigation apparatus 1 includes a working unit 1a for generating the adjusted water 13a described later, and the working unit 1a includes a storage unit 7, a first water source 8, a second water source 9, a preheating unit 10, and a main heating unit. 11. The cooling unit 12 and a plurality of pipelines connected to these are included. The storage unit 7 stores the regulated water 13a, and a first temperature sensor S1 for measuring the temperature of the stored regulated water 13a is provided inside the storage unit 7.

The first water source 8 is, for example, tap water, and supplies water at around 15 degrees Celsius (hereinafter referred to as “first fluid”). The first fluid 13 supplied from the first water source 8 is stored in the storage unit 7 in a state adjusted to a predetermined temperature by the preheating unit 10, the main heating unit 11, or the cooling unit 12. The first water source 8 is connected to one end of the heating section conduction line 14 (first line) provided with the first pump P1 and the first valve V1, and the other end of the heating section conduction line 14 is the main heating section. It is open to the inside of 11.

A branch line 15 (second line) is connected to the heating part conduction line 14, and one end and the other end of the branch line 15 communicate with the heating part conduction line 14 so as to sandwich the first valve V1. is doing. The branch pipeline 15 includes a second valve V2 and a third valve V3, and a preheating unit 10 arranged between these valves V2 and V3.

The preheating unit 10 is a known heat exchanger driven by so-called photovoltaic power generation that converts light energy such as sunlight into electricity. The preheating unit 10 preheats the first fluid 13 supplied from the first water source 8 and passing through the branch pipe 15. The first fluid 13 heated to a predetermined temperature by the preheating section 10 is sent to the main heating section 11 via the branch line 15 and the heating section conduction line 14. There is also a pattern in which the first fluid 13 supplied from the first water source 8 is directly supplied to the main heating unit 11 without preheating the first fluid 13 in the preheating unit 10.

The heating unit 11 has a function of heating the first fluid 13 supplied through the conduction pipe line 14 of the heating unit, and has a water tank 16, a second temperature sensor S2 arranged in the water tank 16, and a plug heater 17. It has. The second temperature sensor S2 measures the temperature of the first fluid 13 supplied to the water tank 16. The plug heater 17 directly heats the first fluid 13 in the water tank 16. The preheating section 10 and the main heating section 11 are heating sections for heating the first fluid 13.

A heating section conduction pipe 14 penetrates into the upper right part of the water tank 16. A first storage section conductive pipe line 18 (third pipe line) provided with a fourth valve V4 penetrates into the upper left upper part of the water tank 16, and one end thereof opens into the water tank 16. The other end of the first storage section conduction pipe 18 is open in the storage section 7. The first fluid 13 supplied to the main heating unit 11 is heated by the plug heater 17, whereby the adjusting water 13a adjusted to a predetermined temperature is generated. The generated adjusting water 13a is supplied to the storage unit 7 via the first storage unit conduction pipe 18.

One end of the return pipe 19 (fourth pipe) is connected to the lower right side of the storage unit 7, and the other end of the return pipe 19 is connected to the lower right lower part of the main heating unit 11. The return pipe 19 is provided with a fifth valve V5, a sixth valve V6, a second pump P2, a seventh valve V7, and an eighth valve V8.

One end of the cooling unit conductive pipe 20 (fifth pipe) is connected to the position sandwiched between the 7th valve V and the 8th valve V8 of the return pipe 19, and the cooling unit conductive pipe 20 and others are connected. The end is connected to the cooling unit 12. A ninth valve V9 is provided in the cooling section conduction pipe line 20. When the first fluid 13 supplied from the first water source 8 is cooled, the first fluid 13 supplied from the first water source 8 reaches the cooling unit 12 via the return pipe 19 and the cooling unit conduction pipe 20. Will be sent.

The cooling unit 12 is, for example, a known air-cooled chiller, and has a function of cooling the first fluid 13 to a predetermined temperature by heat exchange using a refrigerant. One end of the second storage section conduction line 21 (sixth line) is connected to the upper right side of the cooling section 12, and the other end of the second storage section conduction line 21 is connected to the storage section 7. ing. A tenth valve V10 is provided in the second storage portion conduction line 21. The first fluid 13 cooled by the cooling unit 12 is stored in the storage unit 7 after being supplied to the second storage unit conduction pipe 21 as the adjusting water 13a adjusted to a predetermined temperature.

One end of the adjusting water supply pipe line 22 (seventh pipe line) is connected to the position sandwiched between the fifth valve V5 and the sixth valve V6 of the return pipe line 19. The regulated water supply pipe line 22 includes an eleventh valve V11 and a twelfth valve V12, and the other end is connected to the second fluid supply pipe line 23 (eighth pipe line). The regulated water 13a in the storage unit 7 is supplied to the second fluid supply pipeline 23 via the return pipeline 19 and the regulated water supply pipeline 22. The second fluid supply pipe line 23 is provided with a thirteenth valve V13. As the 12th valve V12 and the 13th valve V13, those having an adjustable flow rate, such as a spherical valve, are used.

One end of the second fluid supply pipe line 23 is connected to the second water source 9, and the other end is connected to one end of the mixed water supply pipe line 24 (9th pipe line). The second water source 9 is, for example, groundwater flowing through a constant temperature layer, and the water temperature is maintained in the range of 13 to 16 degrees throughout the year. The second fluid supply pipe line 23 includes a third pump P3.

The raw water supplied from the second water source 9 (hereinafter referred to as “second fluid”) by driving the third pump P3 is a regulated water supply pipe in the process of being supplied to the second fluid supply pipe line 23. The adjusting water 13a supplied through the passage 22 is mixed at the mixing position T to become the mixed water 2 having a predetermined temperature and is supplied to the mixed water supply pipe line 24.

In FIG. 1, the mixed water supply line 24 includes a connection portion with the second fluid supply line 23 and extends toward the soil 3, and is connected to the first part 24a in the soil 3. The second part 24b extending in the horizontal direction, the third part 24c connected to the second part 24b and protruding from the soil 3 to the ground side to reach the internal space of the facility 6, and the third part 24c connected to the third part 24c and directly above the crop 5. A fourth site 24d extending in the planting direction is included in the plant. A plurality of discharge ports 25 are formed along the longitudinal direction at the position of the mixed water supply pipe line 24 (fourth part 24d) directly above the crop 5. The mixed water 2 is supplied to the soil 4 through the discharge port 25.

A third temperature sensor S3 is provided in the second fluid supply pipe line 23. The third temperature sensor S3 is a position exposed on the ground of the second fluid supply pipe line 23, and is arranged between the connection position with the regulated water supply pipe line 22 and the second water source 9. .. The third temperature sensor S3 is, for example, a bimetal type temperature sensor, and a temperature sensitive cylinder containing a bimetal (not shown) is provided in the second fluid supply pipe line 23. The third temperature sensor S3 measures the temperature of the second fluid before being mixed with the adjusting water 13a.

The mixed water supply pipe line 24 is provided with a fourth temperature sensor S4 and a fifth temperature sensor S5. The fourth temperature sensor S4 is located at a position corresponding to the first portion 24a and close to the connection position with the second fluid supply pipe line 23. The fifth temperature sensor S4 is located at a position corresponding to the fourth portion 24d and close to the discharge port 25. Similar to the third temperature sensor S3, the fourth temperature sensor S4 and the fifth temperature sensor S5 are, for example, bimetal temperature sensors. The fourth temperature sensor S4 measures the temperature of the mixed water 2 before passing through the mixed water supply pipe 24 (second part 24d) buried in the soil 3. The fifth temperature sensor S5 measures the temperature of the mixed water 2 passing through the mixed water supply pipe line 24 (fourth portion 24b) arranged in the facility 6. Mixed water 2 having a temperature close to the temperature measured by the fifth temperature sensor S5 is supplied to the soil preparation 4. A temperature sensor may be provided on the soil 4.

Next, the control system of the irrigation apparatus 1 will be described with reference to FIG. The control unit 26 includes a drive unit 27, a storage unit 28, and a determination unit 29. The preheating unit 10, the main heating unit 11, the cooling unit 12, the plug heater 17, the first to third temperature sensors S1 to S3, and the touch panel 30. , Is connected to the notification unit 37. The drive unit 27 drives the preheating unit 10 and the main heating unit based on the temperature of the first fluid 13 supplied from the first water source 8 and the generation temperature of the adjustment water 13a set by the operator via the touch panel 30. 11. Select and control the cooling unit 12. That is, when the generated temperature of the set adjusting water 13a is higher than the temperature of the first fluid 13 supplied from the first water source 8, the driving unit 27 drives and sets the preheating unit 10 and the main heating unit 11. When the generation temperature of the adjusted water 13a is lower than the temperature of the first fluid 13 supplied from the first water source 8, the cooling unit 12 is driven. The preheating unit 10, the main heating unit 11, and the cooling unit 12 are adjusting water generating means for generating the adjusting water 13a to be supplied to the adjusting water supply pipe line 22.

The storage unit 28 contains production data defined for each type of crop 5, information on the temperature measured by the first to third temperature sensors S1 to S3, and the first fluid 13 supplied from the first water source 8. The temperature etc. are stored. The determination unit 29 compares the temperature of the adjusting water 13a in the storage unit 7 detected by the first temperature sensor S1 with the generated temperature set by the operator, and determines whether or not the temperature difference exceeds a predetermined value. Is determined.

The touch panel 30 is a combination of a display unit such as a liquid crystal panel or an organic EL panel and an input unit such as a touch pad, and has a function of displaying operating conditions and a function of inputting operation commands and various data. is doing. The operator can set the temperature of the adjusting water 13a to be generated through the operation / input on the touch panel 30. The touch panel 30 is a setting unit for setting the temperature of the adjusting water 13a to be generated. The notification unit 37 is, for example, an alarm device, and as a result of determination by the determination unit 29, when the temperature difference between the temperature of the adjusting water 13a in the storage unit 7 and the generation temperature set by the operator exceeds a predetermined value. It sends an alarm sound to notify the operator.

FIG. 4 is an example of the operating condition setting screen 30a displayed on the touch panel 30 for setting the operating conditions. The operating condition setting screen 30a includes "crop" 31, "adjusted water set temperature" 32, "reservoir temperature" 33, "first fluid temperature" 34, "second fluid temperature" 35, and "start" 36. Will be done. “Crop” 31 is a display column indicating the type of crop to be produced. The “adjusted water set temperature” 32 is a display column indicating the temperature of the adjusted water 13a (the temperature of the adjusted water 13a to be generated) set by the operator via the touch panel 30. The “storage unit temperature” 33 is a display column indicating the temperature of the adjusted water 13a in the storage unit 7 measured by the first temperature sensor S1. The “first fluid temperature” 34 is a display column indicating the temperature of the first fluid 13 supplied from the first water source 8. “Second fluid temperature” 35 is a display column indicating the temperature of the second fluid measured by the third temperature sensor S3. “Start” 36 is an operation button for starting driving of the preheating unit 10, the main heating unit 11, and the cooling unit 12 in order to generate the adjusting water 13a having a predetermined temperature set by the operator.

Based on the production plan of the crop 5, the operator sets the temperature of the adjusted water 13a generated by the irrigation apparatus 1 so that the temperature of the mixed water 2 supplied to the soil 4 becomes a desired temperature. For example, the operator should visually confirm the temperature of the mixed water 2 measured by the fourth temperature sensor S4 and the fifth temperature sensor S5, and then generate the temperature via a temperature setting screen (not shown) displayed on the touch panel 30. The temperature of the adjusting water 13a is set.

To adjust the flow rate of the mixed water 2 supplied to the soil, the operator operates the 12th valve V12 to control the flow rate of the adjusting water 13a supplied to the second fluid supply pipeline 23, and also This is done by operating the thirteenth valve V13 to control the flow rate of the second fluid supplied from the second water source 9 to the second fluid supply pipeline 23.

Here, the relationship between the temperature of the mixed water 2 supplied to the soil 4 and the growth of the crop 5 will be described. The integrated temperature is generally used as an index showing the progress of the growth of the crop 5. The integrated temperature may be calculated using the water temperature of the fluid (mixed water 2 in the present embodiment) supplied to the soil. That is, the growing period of the crop 5 can have a certain width by making the temperature of the fluid supplied to the soil 4 different.

The applicant has found that the temperature of the fluid supplied to the soil 4 affects the growth speed of the crop 5. For example, when the production target is strawberry, the growth is most promoted by supplying water of about 15 degrees to the soil 4 (the temperature is referred to as "growth promotion temperature". On the other hand, the soil 4 is 15 The growth of strawberries is suppressed by supplying water below the temperature (for example, around 10 degrees) (the temperature is referred to as "growth suppression temperature").

In the irrigation apparatus 1 of the present embodiment, the operator arbitrarily sets the temperature of the mixed water 2 supplied to the soil 4 in which the crop 5 is planted, so that the growth speed (growth period) of the crop 5 regardless of the season. In other words, the shipping time of crop 5 can be artificially controlled. That is, when it is desired to accelerate the growth of the crop 5, the operator sets the production temperature of the adjusted water 13a so that the mixed water 2 becomes the growth promotion temperature. On the other hand, when it is desired to delay the growth of the crop 5, the operator sets the production temperature of the adjusted water 13a so that the mixed water 2 becomes the growth suppression temperature. The growth promotion temperature and the growth suppression temperature are set by the operator for each type of crop 5 based on his / her own knowledge.

The irrigation device 1 in the present embodiment is configured as described above. Next, the irrigation method using the irrigation apparatus 1 will be described with reference to FIGS. 5 and 6. First, the temperature of the adjusting water 13a generated is set through the operation / input of the touch panel 30 by the operator. At this time, the operator first sets the temperature (target temperature) of the mixed water 2 to be supplied to the soil 4 in advance based on the production plan. For example, when it is desired to accelerate the growth of the crop 5, the target temperature is set to the “growth promotion temperature”. Then, the operator refers to the target temperature, the temperature of the second fluid measured by the third temperature sensor S3, and the like, sets the temperature of the adjusting water 13a to be mixed with the second fluid via the touch panel 30, and "starts". Operate 36.

When the mixed water 2 having a temperature higher than that of the second fluid is supplied to the soil 4 by the input of the operator, the adjusting water 13a generated by heating the first fluid 13 supplied from the first water source 8 to a predetermined temperature. Is mixed with the second fluid. When heating the first fluid 13, as shown in FIG. 5, the operator taps the "start" 36 before tapping the first valve V1, the sixth valve V6, the eighth valve V8, and the tenth valve V10. Put the remaining valves in the "open" state as well as in the "closed" state. In FIG. 5, for convenience, the valve in the “closed” state is black.

In this state, the first water source 8 feeds the first fluid 13 to the heating section conduction pipe 14 (arrow a) by driving the first pump P1, and the first fluid 13 passes through the branch pipe 15. It is preheated to a predetermined temperature by the preheating unit 10 (arrow b). The preheated first fluid 13 is fed to the main heating section 11 via the branch line 15 and the heating section conduction line 14 (arrow c). When preheating is not required, the operator puts the second valve V2 and the third valve V3 in the "closed" state and the first valve V1 in the "open" state.

Next, the main heating of the first fluid 13 is executed by the main heating unit 11. That is, the control unit 26 (drive unit 27) controls the plug heater 17 based on the generation temperature of the adjustment water 13a set by the operator. As a result, the first fluid 13 supplied to the main heating unit 11 is heated, and the adjusting water 13a that has risen to the temperature set by the operator is generated. The adjusted water 13a after heating is supplied to the storage unit 7 via the first storage unit conduction pipe 18 (arrow d).

The regulated water 13a stored in the storage unit 7 is supplied to the second fluid supply pipeline 23 via the return pipeline 19 and the regulated water supply pipeline 22 (arrow e). Then, the adjusting water 13a at the mixing position T set on the second fluid feeding pipe line 23 and the second fluid fed to the second fluid feeding pipe line 23 by the drive of the third pump P3 are mixed. This produces mixed water 2 at a predetermined temperature. The mixed water 2 is then supplied to the mixed water supply pipe line 24 (arrow f), and is supplied to the soil 4 through the discharge port 25.

By the way, a part (second part 24b) of the mixed water supply pipe line 24 is buried in the soil 3 near the ground surface. For example, in winter when the temperature of the soil 3 is low, the surface temperature of the second portion 24b (soil burial portion) of the mixed water supply pipeline 24 is extremely low. When the heated mixed water 2 passes through the second portion 24b in this state, heat exchange is performed with the mixed water supply pipe line 24, the temperature of the mixed water 2 drops, and the mixed water 2 is supplied to the soil. There is a possibility that the mixed water 2 having a temperature lower than the target temperature to be supplied to the soil 4 is supplied.

Therefore, in consideration of the temperature drop of the mixed water 2 when passing through the mixed water supply pipeline 24, the temperature is slightly higher than the target temperature of the mixed water 2 to be supplied to the soil 4 (5 to 5 to the target temperature). It is desirable to generate mixed water 2 at the mixing position T (at a temperature added by about 7 degrees), supply this to the mixed water supply pipeline 24, and supply the mixed water 4 to the soil. As a result, the temperature of the mixed water 2 when discharged from the discharge port 25 can be brought close to the target temperature. In such a case, the generation temperature of the adjusting water 13a is arbitrarily set by the operator via the touch panel 30, for example, with reference to the measurement results by the fourth temperature sensor S4 and the fifth temperature sensor S5.

When the temperature of the adjusting water 13a in the storage unit 7 heated by the main heating unit 11 drops by a certain amount or more, the adjusting water 13a in the storage unit 7 conducts to the main heating unit 11 by driving the second pump P2. It is fed to the return pipe 19 and returned to the main heating unit 11 (arrow g), reheated, and then returned to the storage unit 7 via the first storage unit conduction pipe 18. In such a case, the operator puts the sixth valve V6 and the eighth valve V8 in the "open" state, and keeps the ninth valve V9 and the eleventh valve V11 in the "closed" state.

Next, when the mixed water 2 having a temperature lower than that of the second fluid is supplied to the soil 4 by the input of the operator, it is generated by cooling the first fluid 13 supplied from the first water source 8 to a predetermined temperature. The adjusting water 13a is mixed with the second fluid. When cooling the first fluid 13, as shown in FIG. 6, the operator has a second valve V2, a third valve V3, a fourth valve V4, a sixth valve V6, and a first valve before operating the “start” 36. 7 Put the valve V7 in the "closed" state and the remaining valves in the "open" state. In FIG. 6, for convenience, the valve in the “closed” state is black.

In this state, the first water source 8 to the first fluid 13 are fed to the main heating unit 11 via the heating unit conduction pipe 14 by driving the first pump P1 (arrow h). At this time, the plug heater 17 is not operated. The first fluid 13 in the water tank 16 is supplied to the cooling unit 12 via the return pipe line 19 and the cooling unit conduction pipe line 20 (arrow i).

Next, the cooling unit 12 cools the first fluid 13. That is, the control unit 26 (drive unit 27) controls the cooling unit 12 based on the generation temperature of the adjusting water 13a set by the operator. As a result, the first fluid 13 is cooled to generate the adjusting water 13a which has been lowered to a predetermined temperature. The cooled regulated water 13a is supplied to the storage unit 7 via the second storage unit conduction pipe 21 (arrow j).

The regulated water 13a stored in the storage unit 7 is supplied to the second fluid supply pipeline 23 via the return pipeline 19 and the regulated water supply pipeline 22 (arrow k). Then, the adjusting water 13a at the mixing position T set on the second fluid supply pipe line 23 and the second fluid supplied to the second fluid supply pipe line 23 by the drive of the third pump P3 are mixed. This produces mixed water 2 at a predetermined temperature. The mixed water 2 is then supplied to the mixed water supply pipe line 24 (arrow l), and is supplied to the soil 4 through the discharge port 25.

By the way, for example, in the summer when the temperature of the soil 3 is high, the surface temperature of the second portion 24b (soil burial portion) of the mixed water supply pipeline 24 is extremely high. When the cooled mixed water 2 passes through the second portion 24b in this state, heat exchange is performed with the mixed water supply pipe line 24, the temperature of the mixed water 2 rises, and the mixed water 2 is supplied to the soil. There is a possibility that the mixed water 2 having a temperature higher than the target temperature to be supplied is supplied to the soil 4.

Therefore, in consideration of the temperature rise of the mixed water 2 when passing through the mixed water supply pipeline 24, the temperature is slightly lower than the target temperature of the mixed water 2 to be supplied to the soil 4 (5 to 5 to the target temperature). It is desirable to generate mixed water 2 at the mixing position T (at a temperature subtracted by about 7 degrees), feed it to the mixed water supply pipeline 24, and supply it to the soil. As a result, the temperature of the mixed water 2 when discharged from the discharge port 25 can be brought close to the target temperature. In such a case, the generation temperature of the adjusting water 13a is arbitrarily set by the operator via the touch panel 30, for example, with reference to the measurement results by the fourth temperature sensor S4 and the fifth temperature sensor S5.

When the temperature of the adjusting water 13a in the storage unit 7 cooled by the cooling unit 12 rises by a certain amount or more, the adjusting water 13a in the storage unit 7 is driven by the second pump P2 via the return pipe 19. It is sent to the cooling unit conduction pipe 20 and returned to the cooling unit 12, recooled, and then returned to the storage unit 7 via the second storage unit conduction pipe 21. In such a case, the operator keeps the 8th valve V8 and the 11th valve V11 in the "closed" state and the 6th valve V6 and the 7th valve V7 in the "open" state.

As described above, in the irrigation apparatus 1 of the present embodiment, the regulated water supply pipeline 22 to which the regulated water 13a generated by adjusting the first fluid 13 to a predetermined temperature is supplied, and the first The second fluid supply pipeline 23 to which the two fluids are supplied, the regulated water 13a supplied from the regulated water supply pipeline 22, and the second fluid supplied from the second fluid supply pipeline 23. The mixed water 2 is supplied, and the mixed water supply line 24 and the regulated water supply line 22 are provided with a discharge port 25 for supplying the mixed water 2 to the soil. It is provided with a adjusting water generating means for generating the adjusting water 13a to be supplied. Further, the adjusting water generating means sets the temperature of the heating unit (preheating unit 10 and the main heating unit 11) for heating the first fluid 13, the cooling unit 12 for cooling the first fluid 13, and the temperature of the adjusting water 13a to be generated. It includes a setting unit (touch panel 30) to be set, and a control unit 26 that selects and controls a heating unit or a cooling unit 12 based on a temperature set by the setting unit. As a result, the growth of the crop 5 can be controlled regardless of the season by adjusting the temperature of the fluid supplied to the soil 4.

Further, a part of the mixed water supply pipeline 24 is buried in the soil 3, and when the control unit 26 selects and controls the heating unit, the mixing temperature is higher than the target temperature to be supplied to the soil production 4. When water 2 is generated at the mixing position T of the adjusting water 13a and the second fluid and the control unit 26 selects and controls the cooling unit 12, the mixed water 2 having a temperature lower than the target temperature to be supplied to the soil 4 Is generated at the mixing position T of the adjusting water 13a and the second fluid, so that the temperature of the mixed water 2 when discharged from the discharge port 25 can be brought closer to the target temperature preset by the operator based on the production plan. can. The irrigation device 1 of the present invention is not limited to the present embodiment, and the design can be changed without departing from the gist of the present invention.

According to the present invention, the growth of crops can be controlled by adjusting the temperature of the fluid supplied to the soil, which is particularly useful in the agricultural field.

1 Irrigation equipment 3 Soil 4 Soil 10 Preheating part 11 Heating part 12 Cooling part 13 1st fluid 13a Adjusted water 22 Adjusted water supply pipeline 23 2nd fluid supply pipeline 24 Mixed water supply pipeline 25 Discharge Exit 26 Control unit 30 Touch panel

Claims (2)

A regulated water supply pipeline to which the regulated water generated by adjusting the first fluid to a predetermined temperature is supplied, and
The second fluid supply pipeline to which the second fluid is supplied, and
The mixed water which is a mixture of the adjusted water supplied from the adjusted water supply pipeline and the second fluid supplied from the second fluid supply pipeline is supplied, and the mixed water is supplied to the soil. A mixed water supply pipeline with a discharge port for supplying water, and
A regulated water generating means for generating regulated water to be supplied to the regulated water supply pipeline is provided.
The adjusted water generating means is
The heating part that heats the first fluid and
A cooling unit that cools the first fluid,
A setting unit that sets the temperature of the regulated water to be generated,
Including a control unit that selects and controls the heating unit or the cooling unit based on the temperature set by the setting unit. fruit,
A part of the mixed water supply pipeline is buried in the soil.
When the control unit selects and controls the heating unit, mixed water having a temperature higher than the target temperature to be supplied to the soil is generated at the mixing position of the adjusted water and the second fluid.
When the control unit selects and controls the cooling unit, mixed water having a temperature lower than the target temperature to be supplied to the soil is generated at the mixing position of the adjusted water and the second fluid.
The mixed water supply pipeline includes a first portion extending toward the soil including a connection portion with the second fluid supply pipeline, and a second portion connected to the first portion and buried in the soil. And a third part connected to the second part and protruding from the soil to the ground side, and a fourth part connected to the third part and formed with the discharge port.
A fourth temperature sensor located at the position of the first portion exposed on the ground and connected to the second fluid supply pipe, and the fourth temperature sensor.
Further equipped with a fifth temperature sensor arranged in the fourth portion,
The irrigation device where the mixing position is set on the second fluid supply pipeline. The irrigation apparatus according to claim 1, further comprising a storage unit for storing the adjusted water generated by the heating unit or the cooling unit.

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