JP5795722B2 - Control method for spraying device for temperature drop, device therefor and multi-temperature drop system - Google Patents

Control method for spraying device for temperature drop, device therefor and multi-temperature drop system Download PDF

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JP5795722B2
JP5795722B2 JP2011118180A JP2011118180A JP5795722B2 JP 5795722 B2 JP5795722 B2 JP 5795722B2 JP 2011118180 A JP2011118180 A JP 2011118180A JP 2011118180 A JP2011118180 A JP 2011118180A JP 5795722 B2 JP5795722 B2 JP 5795722B2
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JP2012247106A (en
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原田 昌幸
昌幸 原田
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公立大学法人名古屋市立大学
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  The present invention relates to a method for controlling a spraying device for cooling and an improvement of the device.

A temperature lowering spray device is disclosed in Patent Document 1. This temperature lowering spray device (hereinafter sometimes simply referred to as “spraying device”) sprays mist, and efficiently lowers the ambient temperature by absorbing latent heat accompanying evaporation of the mist.
The spraying device for temperature reduction disclosed in Patent Document 1 includes a pressure pump that generates a water pressure of 2 MPa to 10 MPa, a spray nozzle having a predetermined structure, a water distribution pipe that connects the pump and the nozzle, and a water control valve that is disposed in the water distribution pipe. It becomes.
This temperature lowering spray device has been used exclusively outdoors, as seen, for example, at the Aichi Expo.
Note that Non-Patent Document 1 should also be referred to as a document related to the present invention.

JP 2006-177575 A Masayuki Harada, Tsuyoshi Sugiyama, Study on dry mist technology in horticultural facilities Part 1 Characteristics of temperature fluctuation and heat balance by line type unit (h = 2,000), Journal of Architectural Institute of Japan Tokai Branch, No. 49, pp. 317-320, February 2011

One characteristic of this spray device is that only the pressurized water is supplied to the spray nozzle to form mist, so that the energy (electric power) required for operation is extremely small.
The present inventor has been studying the application of the temperature lowering spraying apparatus to the cooling of the greenhouse, paying attention to such characteristics.
The greenhouse is for keeping the internal environment at a temperature suitable for horticultural objects and the like, and takes in sunlight from the viewpoint of energy efficiency in winter and to promote photosynthesis of horticultural objects. However, as a result of taking in sunlight, the internal temperature rises above the optimum temperature for growing horticultural plants during the daytime in the summer, so the temperature must be forcibly lowered.

When trying to apply the above-described spraying device as the temperature lowering means, the following problems were encountered for the time being.
Since the temperature lowering principle of the spray device is absorption of latent heat accompanying vaporization of mist, generally the temperature of the space to be cooled and the humidity as required are measured, and the amount of mist sprayed is controlled according to the measured result. . The sprayed mist evaporates and lowers the temperature in the temperature-decreasing target space. However, since the atmosphere in the temperature-decreasing target space is constantly replaced in the open outdoors, the temperature and humidity in the temperature-decreasing target space are in a substantially constant range.
On the other hand, in a greenhouse which is ventilated but is a semi-enclosed space, the temperature in the greenhouse changes depending on the incidence of sunlight. Since there is a certain time lag between the amount of sunlight incident and the temperature rise / fall in the greenhouse, there is also a certain lime lag in the spraying of mist and the temperature drop in the target space. Even if the amount of mist sprayed is controlled based on this, a sufficient temperature lowering effect may not be obtained. Moreover, when the amount of spraying becomes excessive, there is a possibility that unvaporized mist is generated and the inside of the greenhouse is wetted. Wetting of horticultural materials in the greenhouse can cause quality degradation such as the occurrence of pests and malformations and should be avoided.

This invention arises when the spraying device for cooling is used in a facility where sunlight such as a greenhouse is inserted (hereinafter, the facility may be simply referred to as “greenhouse”), and the present inventors have newly found the above-mentioned The present invention has been made to solve the problem, and the first aspect thereof is defined as follows.
A method for controlling a temperature lowering spray device disposed in a facility where sunlight is incident, wherein the spray device according to the temperature or temperature and humidity in the facility and the intensity of sunlight incident in the facility A control method for a temperature lowering spray device, which controls the amount of mist sprayed from the air.
According to the control method for the temperature lowering spray device of the first aspect defined as described above, not only the temperature in the facility or the temperature and humidity but also the spray of mist according to the intensity of sunlight incident on the facility. Since the amount is adjusted, the temperature in the facility can be controlled accurately and easily.
Here, the facility is a building having a space partitioned from the outside by walls, roofs, floors, windows, doors, etc., part or all of which is formed of a light-transmitting material, and the light-transmitting property Sunlight that permeates through the material, and affects the temperature of the internal space. A typical example of this facility is a greenhouse.
The intensity of sunlight can be evaluated by the amount of solar radiation (heat amount), the amount of sunlight (light amount), and the like. Moreover, sunlight can be converted into electric power through a solar panel, and the intensity of sunlight can be evaluated based on the electric power. The strength of sunlight to be evaluated in the present invention is whether or not the temperature in the facility is affected. The intensity of sunlight that raises the temperature in the facility can be used as a reference for evaluating the strength. Of course, since the incident time length of sunlight also affects the temperature rise or fall in the facility, the standard of the intensity of sunlight can be determined in association with the incident time length.
Mist refers to, for example, water droplets having an average particle size of 40 μm or less and can be sprayed with the apparatus described in Patent Document 1 (so-called dry mist (registered trademark)), but is not limited to this. Absent.

As described above, the spraying apparatus supplies high-pressure water (hereinafter sometimes referred to as “pressurized water”) of 2 MPa to 10 MPa at a constant pressure suitable for the spray nozzle, and ejects the water to make a mist. For this reason, the output (discharge pressure) of the pressurizing pump is constant, and as a result, it is difficult to control the amount of water discharged from the pressurizing pump. On the other hand, it is conceivable to control the amount of pressurized water supplied to the spray nozzle by a water control valve arranged between the pressure pump and the spray nozzle. It becomes expensive.
In other words, according to a practical spraying device, the control of the spray amount of mist must be based on on / off of the pressurizing pump. However, as described above, the internal temperature of the greenhouse changes depending on the state of solar radiation. Therefore, although it is necessary to change the mist spray amount in response to the change in the internal air temperature, there is a limit to the adjustment of the mist spray amount only by the on / off control of the pressurizing pump, that is, the two-stage control.
Therefore, the present inventor has noticed that at least two sets of spraying devices including a pressurized water supply unit for supplying pressurized water and a spray nozzle are arranged and controlled independently. This makes it possible to finely control the amount of mist spray as compared with at least one set of spray device on / off control (that is, two-stage control). That is, assuming that the mist ejection amount from the first spraying device is A and the mist spraying amount from the second spraying device is B, the mist ejection amount into the greenhouse is a maximum of four stages (0, A, B, A + B). ). Similarly, if n sets of spraying devices are prepared, it can be adjusted to 2 n steps at maximum.

On the premise of the arrangement of a plurality of spray devices as described above, the invention of the second aspect is defined as follows.
In the control method for a temperature lowering spray device defined in the first aspect, the temperature lowering spray device is a spray for forming a mist by ejecting a pressurized water supply unit and a constant pressure pressurized water supplied from the pressurized water supply unit. A nozzle, and
At least two sets of the temperature lowering spray device are arranged in the facility to constitute a multi-temperature lowering system,
Controlling the operation of the first spraying device for lowering the temperature based on the temperature in the facility or the temperature and humidity in the facility;
The operation of the second spraying device for temperature drop is controlled based on the intensity of the sunlight incident on the facility.

According to the second aspect thus defined, the first spraying device and the second spraying device are independent of each other, and the former is controlled in operation based on the temperature in the greenhouse or the temperature and humidity. The latter is controlled based on the intensity of incident sunlight.
Since the intensity of sunlight is a disturbance factor when controlling the temperature of the greenhouse, it is preferable to individually control the change in the intensity of sunlight, that is, to control the amount of mist spray. Since the temperature of the greenhouse, or the temperature and humidity are controlled objects in the first place, this is controlled by this regardless of the intensity of sunlight (ie, the amount of mist spray is controlled).
In other words, the temperature in the greenhouse, or the temperature and humidity varies depending on the intensity of sunlight, but its fluctuation range is relatively small, whereas the intensity of sunlight greatly varies depending on weather conditions. Therefore, it is preferable from the standpoint of improving the quality of control that the two are distinguished and measured and fed back to the mist spray amount.
The operation control of the first and second spraying devices is performed by turning on / off the pressurizing pump provided in the pressurizing water supply unit, thereby avoiding the use of expensive water control valves and the like. Can be provided at a low cost (third aspect).

In the control method stipulated in the third aspect, the first spraying device for temperature lowering is such that the temperature in the facility, or the temperature and humidity is the first reference condition, and the first reference condition is the first reference condition. When the pressure pump continues for more than the threshold time, turn the pressure pump on or off,
The second temperature lowering spray device is pressurized when the intensity of sunlight incident on the facility is a second reference condition and the second reference condition continues for a second threshold time or more. Turn the pump on or off. (Fourth aspect)
The first reference condition is, for example, that the pressure pump is turned off when the temperature DT is less than 32 ° C. or the relative humidity RH exceeds 70%, and the pressure pump is turned on under other conditions.
The amount of solar radiation can be used as the second reference condition regarding the intensity of sunlight. As the amount of solar radiation, the amount of heat per unit area (W / m 2 ) is preferably used from the viewpoint of comparison with latent heat. Therefore, the second reference condition is, for example, that the pressure pump is turned on when the amount of solar radiation is 300 (W / m 2 ) or more, and the pressure pump is used in other conditions (less than 300 (W / m 2 )). Turn off. (5th aspect)

Further, the first threshold time and the second threshold time can be 30 seconds. That is, as a first reference condition, for example, when the temperature DT is less than 32 ° C. or the relative humidity RH exceeds 70% for 30 seconds or more, the pressure pump is turned off, and the condition not satisfying this condition is 30 seconds. When the above is continued, the pressure pump is turned on. Similarly, as a second reference condition, for example, when a solar radiation amount of 300 (W / m 2 ) or more continues for 30 seconds or more, the pressure pump is turned on, and the solar radiation amount is less than 300 (W / m 2 ). The pressure pump is turned off when the time continues for 30 seconds or more.
Note that if the pressure pump of 2 MPa to 10 MPa is turned on / off in a short time, its life may be shortened. Therefore, it is preferable that the OFF time and / or the ON time of the pressurizing pump be equal to or longer than a third threshold time that can reduce the load of the pressurizing pump (sixth aspect).
This third threshold time may be 5 minutes. Of course, the third threshold time can be arbitrarily set according to the pressurizing pump.

In the above, it is possible to wait for a difference between the reference for turning on the pressure pump and the reference for turning it off. That is, the seventh aspect of the present invention is defined as follows.
In the control method defined in the fourth aspect, the first reference condition satisfies both the following conditions (A) and (B):
(A) When the temperature in the facility or the temperature and humidity are the 1-1 standard conditions and the 1-1 standard condition continues for the fourth threshold time or longer, the pressure pump is turned on. To
(B) The pressure pump is turned off when the temperature in the facility, or the temperature and humidity are the first and second reference conditions, and the first and second reference conditions continue for the fifth threshold time or longer. To do.
The first reference condition is, for example, that the pressure pump is turned on when the temperature DT is 34 ° C. or more and the relative humidity RH is 60% or less. The first reference condition is, for example, that the temperature DT is The pressurizing pump can be turned off when the temperature is less than 32 ° C. or the relative humidity RH is more than 70%.
In the control method of the seventh aspect, there is a difference between the ON condition and the OFF condition of the pressurizing pump only for the reference condition related to the temperature or the temperature and the humidity. Similarly, in the reference condition related to the intensity of sunlight, Also, a difference can be provided between the ON condition and the OFF condition of the pressure pump.
In the above, the fourth threshold time and the fifth threshold time may be 30 seconds.

As described above, it is possible to control the temperature in the greenhouse in multiple stages by arranging a plurality of sets of spray devices whose operations are controlled on / off. In the second aspect, the first spray device is installed in the greenhouse. The second spraying device is controlled by the intensity of sunlight.
From the viewpoint of controlling the temperature in the greenhouse more precisely, the first and second spraying devices may be controlled based on different standards.
Therefore, the eighth aspect of the present invention is defined as follows.
A control method for a temperature lowering spray device arranged in a facility where sunlight is incident,
At least two sets of temperature-falling spraying devices comprising a pressurized water supply unit having a pressure pump and a spray nozzle that ejects constant-pressure pressurized water supplied from the pressurized water supply unit to form mist To configure a multi-temperature drop system,
Controlling on / off of the pressurizing pump of the first temperature-decreasing spray device based on a third reference condition in the facility;
A control method for a temperature lowering spray device, wherein the on / off of the pressure pump of the second temperature lowering spray device is controlled based on a fourth reference condition in the facility.

Here, different temperatures and humidity can be used as the third reference condition and the fourth reference condition, respectively, and can be defined as in the following ninth aspect. That is,
In the control method defined in the eighth aspect, as the third reference condition, when the temperature in the facility is equal to or higher than the first temperature and the humidity is equal to or lower than the first humidity, the pressure pump is turned on. (Turn off under other conditions),
As the fourth reference condition, when the temperature in the facility is equal to or higher than the second temperature and the humidity is equal to or lower than the second humidity, the pressure pump is turned on (it is turned off under other conditions).
Here, the first temperature is a temperature DT: 32 ° C., the first humidity is a relative humidity RH: 70%, the second temperature is a temperature DT: 34 ° C., and the second humidity is a relative humidity RH: 60 % (Tenth aspect).

The eleventh aspect of the present invention is defined as follows.
A mist forming unit that forms a mist by ejecting pressurized water of a constant pressure supplied from a pressurized water supply unit from a spray nozzle;
A first detection unit that detects the temperature of the atmosphere of the temperature-lowering target space, or the temperature and humidity;
A second detector for detecting the intensity of sunlight;
A temperature-falling spraying device comprising: a mist amount adjusting unit that adjusts an amount of mist ejected from the spray nozzle based on detection results of the first detection unit and the second detection unit.
According to the temperature lowering spray device of the eleventh aspect defined in this way, the control method defined in the first aspect can be executed.

The twelfth aspect of the present invention is defined as follows. That is,
A first temperature lowering spray device comprising a first pressure pump and a first spray nozzle; a second temperature lowering spray device comprising a second pressure pump and a second spray nozzle; Is a multi-temperature drop system that combines
A first detection unit that detects the temperature of the atmosphere of the temperature-lowering target space, or the temperature and humidity;
A second detector for detecting the intensity of sunlight;
A multi-temperature drop system including a mist amount adjustment unit that performs on / off control of the first and / or second pressurization pumps based on detection results of the first detection unit and the second detection unit.
According to the multi-temperature-falling system of the twelfth aspect thus defined, since two sets of temperature-falling spraying devices are provided, the amount of mist ejected into the greenhouse can be controlled more finely. Further, according to the twelfth aspect of the present invention defined in this way, the control method defined in the third aspect can be executed.

The thirteenth aspect of the present invention is defined as follows. That is,
In the multi-temperature drop system defined in the twelfth aspect, the mist amount adjusting unit is configured to control on / off of the first pressurizing pump based on a detection result of the first detecting unit; A second adjusting unit that controls on / off of the second pressurizing pump based on a detection result of the second detecting unit.
According to the multi-temperature drop system of the thirteenth aspect defined as described above, the control method defined in the third aspect can be executed.

The fourteenth aspect of the present invention is defined as follows. That is,
In the multi-temperature drop system defined in the twelfth or thirteenth aspect, the first pressurization pump and the second pressurization pump have the same rating, and the first spray nozzle and the second spray nozzle also It is the same rating.
As a result, the parts can be shared, and a multi-temperature drop system with low manufacturing cost and low maintenance cost can be provided.

The fifteenth aspect of the present invention is defined as follows. That is,
In the multi-temperature-decreasing system defined in the twelfth or thirteenth aspect, based on the detection result of the first detection unit, the temperature of the temperature-decreasing target space, or the temperature and humidity are the first reference condition, and the first When the reference condition of 1 continues for the first threshold time or longer, the mist amount adjusting unit outputs a signal for turning on or off the first pressurizing pump,
Based on the detection result of the second detection unit, when the intensity of sunlight incident on the temperature drop target space is the second reference condition, and the second reference condition continues for a second threshold time or longer The mist amount adjusting unit outputs a signal for turning on or off the second pressurizing pump.
Thereby, the same operation and effect as the fourth aspect can be obtained.

The sixteenth aspect of the present invention is defined as follows. That is,
In the multi-temperature drop system defined in the twelfth or thirteenth aspect, the mist amount adjusting unit sets an off time and / or an on time of the first pressurizing pump and the second pressurizing pump to a third threshold value. A pressurizing pump controller for maintaining the time is further provided.
Thereby, the effect | action and effect similar to 6th aspect are acquired.

The seventeenth aspect of the present invention is defined as follows. That is,
In the multi-temperature drop system defined in the fifteenth aspect, the first reference condition satisfies both of the following conditions (a) and (b):
(A) The mist amount adjusting unit when the temperature of the temperature-decreasing target space or the temperature and humidity are 1-1 reference conditions, and the 1-1 reference conditions continue for a fourth threshold time or longer. Turns on the first pressurizing pump,
(A) When the temperature of the space to be cooled, or the temperature and humidity are the first to second reference conditions, and the first to second reference conditions continue for the fifth reference time or longer, the first Turn off the pressure pump.
Thereby, the same operation and effect as in the seventh aspect can be obtained.

The eighteenth aspect of the present invention is defined as follows. That is,
A first temperature-lowering spraying device comprising a first pressure pump, a first water distribution pipe, and a plurality of first spray nozzles attached to the first water distribution pipe; a second pressure pump; 2 water spray pipes and a second temperature lowering spray device comprising a plurality of second spray nozzles attached to the second water pipe, are arranged in the facility,
The first spray nozzle and the second spray nozzle are each distributed so as to be evenly distributed in the facility,
The amount of mist sprayed from the first spray nozzle is controlled by turning on and off the first pressurizing pump,
The multi temperature fall system in which the amount of mist sprayed from the second spray nozzle is controlled by turning on and off the second pressurizing pump.
According to the multi-temperature lowering system thus defined, the spray nozzles of the first temperature lowering spray device and the second temperature lowering spray device are evenly distributed in the facility. By operating the temperature lowering spray devices independently, the amount of mist can be adjusted evenly and in multiple stages in the facility.
If the amount of mist sprayed from the spray nozzle can be controlled linearly using a water control valve or the like, the area in charge of the first temperature drop spraying device and the area in charge of the second temperature drop spraying device can be sorted in the facility. . In this case, since the spray nozzle of each device is installed only in the area in charge, an increase in the length of the pipe and the installation cost can be suppressed. However, the use of the water control valve is not realistic from the viewpoint of cost, and the mist spray amount must be controlled by turning on and off the pressurizing pump. In this case, the water distribution pipes and the spray nozzles of the spraying devices for cooling each temperature are distributed evenly in the facility against the cost increase for installation.

It is a schematic diagram which shows the spraying apparatus for temperature fall of embodiment of this invention. It is a flowchart which similarly shows operation | movement of the spraying apparatus for temperature fall. It is a flowchart which similarly shows the operation control of a 1st pressurization pump. It is a flowchart which similarly shows operation control of a 2nd pressurization pump.

Hereinafter, the present invention will be described in more detail based on embodiments.
FIG. 1 shows a multi-temperature drop system 1 that is a typical example of an embodiment of the present invention. This multi temperature lowering system 1 includes a first temperature lowering spray device 10 and a second temperature lowering spray device 20.
The first temperature lowering spray device 10 includes a pressurizing pump 11, a water distribution pipe 12, a plurality of spray nozzles 14 attached to the water distribution pipe 12, and a water control valve 15. The structure of the spray nozzle 14, the water pressure required for the pressurizing pump, the ON / OFF timing thereof, and other opening / closing timings of the control valve 15 are based on the description in Patent Document 1, for example.
The second temperature lowering spray device 20 also includes a pressurizing pump 21, a water distribution pipe 22, a plurality of spray nozzles 24 and a water control valve 25 attached to the water distribution pipe 22, and at least the pressurization pump 21 and the spray nozzle 24 are the first. 1 and elements 11 and 14 of the temperature lowering spraying apparatus 10. As a result, the parts can be shared and the manufacturing cost of the apparatus can be reduced.
Of course, it is also possible to provide a difference between the amount of mist discharged from the first temperature lowering spray device 10 and the amount of mist discharged from the second temperature lowering spray device 20.

The spray nozzles 14 are arranged so as to be evenly distributed in the greenhouse. Accordingly, the water distribution pipes 12 are also arranged so as to be evenly distributed in the greenhouse. Similarly, the spray nozzles 24 and the water distribution pipes 22 are also arranged so as to be evenly distributed in the greenhouse. As a result, the water distribution pipe 12 and the water distribution pipe 22 may intersect in the greenhouse.
By uniformly distributing the spray nozzles 14 of the first temperature lowering spraying device 10, when the pressurization pump 11 is controlled to be turned on / off in the first temperature lowering spraying device, the influence, that is, the mist amount is adjusted. Because it covers the whole greenhouse. Similarly, by uniformly distributing the spray nozzles 24 of the second temperature lowering spraying device 20, when the pressurizing pump 21 is controlled to be turned on / off in the second temperature lowering spraying device, the influence, that is, the amount of mist. Adjustment across the greenhouse.
Here, evenly distributing the spray nozzles means that the distance between the spray nozzles is uniform, but considering the airflow and obstacles in the greenhouse, the mist should be distributed evenly throughout the greenhouse. It also includes aligning the spray nozzle.
Reference numeral 31 in the figure denotes a temperature / humidity sensor (first detection unit) that detects the temperature and humidity in the greenhouse and sends the detection result to the first adjustment unit 41 of the mist amount adjustment unit 40. Similarly, the solar radiation sensor (second detection unit) 32 detects the intensity of sunlight (the amount of solar radiation) and sends the detection result to the second adjustment unit 42.
The first adjustment unit 41 controls on / off of the first pressurization pump 11 based on the result sent from the temperature / humidity sensor 31. Similarly, the second adjustment unit 42 controls on / off of the second pressurizing pump 21 based on the result sent from the solar radiation sensor 32.
Depending on the temperature and humidity in the greenhouse, it may be preferable to link the operation of the second pressurizing pump 21 with the first pressurizing pump 11.

Next, operation | movement of the multi temperature fall system 1 is demonstrated, referring the flowchart of FIG.
In step 1, the temperature and humidity sensor 31 detects the temperature DT and the relative humidity RH in the greenhouse.
The detection result obtained in step 1 is compared with the first reference condition in the first adjustment unit 41 (step 3). As the first reference condition, “when the temperature DT is less than 32 ° C. or the relative humidity RH exceeds 70%, the pressure pump is turned off and the pressure pump is turned on under other conditions” can be adopted. . This condition can be appropriately set according to the environment suitable for the horticulture in the greenhouse.
When the temperature and humidity in the greenhouse match “temperature DT is less than 32 ° C. or relative humidity RH exceeds 70%”, the first pressure pump 11 and the second pressure pump 21 are turned off (step 5, 6), stop the generation of mist. If the temperature DT is less than 32 ° C., it is not necessary to lower the temperature, and if mist is generated in a high humidity state where the relative humidity RH exceeds 70%, the evaporation of the mist may be insufficient and the greenhouse may be wetted. It is.
On the other hand, when the temperature DT is 32 ° C. or higher and the relative humidity is 70% or lower, the process proceeds to Step 10.

Details of step 10 are shown in FIG.
In step 101, the continuous stop time T1 of the first pressurizing pump 11 is measured. For example, when the first pressurizing pump 11 is turned off, an elapsed time from the time when the counter (not shown) is started and turned off is measured, and this is set as a continuous stop time T1.
Subsequently, in step 102, the condition that does not meet the condition of step 3 “temperature DT is less than 32 ° C. or relative humidity RH exceeds 70%”, that is, temperature DT is 32 ° C. or more and relative humidity is 70% or less. In this case, the elapsed time from the time when the counter (not shown) is started and the condition is satisfied is measured, and this is set as the continuous time T2.

In step 103, when the continuous stop time T1 measured in step 101 is less than 5 minutes, the first pressurizing pump 11 is not started (step 110).
On the other hand, when the continuous stop time T1 is 5 minutes or more, the routine proceeds to step 107. In step 107, when the continuous time T2 measured in step 102 is less than 30 seconds, the first pressurizing pump is not started (step 110).
On the other hand, the first pressurizing pump is started when the continuous time T2 is 30 seconds or longer (step 109).

By executing the control shown in FIG. 3, the first pressurizing pump 11 is not frequently turned on / off, and its life can be extended.
In FIG. 3, one of step 101 and step 103 or step 102 and step 107 may be omitted.

In step 11, the solar radiation amount S <b> 1 of sunlight that enters the greenhouse is measured by the solar radiation sensor 32.
The amount of heat (W / m 2 ) can be used as the amount of solar radiation S1.
The detection result obtained in step 11 is sent to the second adjustment unit 42 where it is compared with the second reference. As this second reference condition, use “the pressure pump is turned on when 300 (W / m 2 ) or more, and the pressure pump is turned off under other conditions (less than 300 (W / m 2 ))”. Can do. Of course, this second reference condition can also be set arbitrarily.
When the detected solar radiation amount S1 is less than 300 (W / m 2 ), the second pressurizing pump 21 is turned off (step 15). On the other hand, when the detected solar radiation amount S1 is 300 (W / m 2 ) or more, the routine proceeds to step 20.

Details of this step 20 are shown in FIG.
In step 201, the continuous stop time T3 of the second pressurizing pump 21 is measured.
For example, when the second pressurizing pump 21 is turned off, an elapsed time from when the counter (not shown) is started and turned off is measured, and this is set as a continuous stop time T3. Subsequently, in Step 202, the continuous time T4 under the condition of Step 13, that is, the condition where the solar radiation amount is 300 (W / m 2 ) or more is measured. For example, when such a condition is satisfied, a counter (not shown) is started and the elapsed time from when the condition is satisfied is measured, and this is set as a continuous time T4.

In step 203, when the continuous stop time T3 measured in step 201 is less than 5 minutes, the second pressurizing pump 21 is not started (step 210).
On the other hand, when the continuous stop time T3 is 5 minutes or longer, the routine proceeds to step 207. In step 207, when the continuous time T4 measured in step 202 is less than 30 seconds, the second pressurizing pump 21 is not started (step 210).
On the other hand, the second pressurizing pump 21 is started when the continuous time T4 is 30 seconds or longer (step 209).

By executing the control shown in FIG. 4, the second pressurizing pump 21 is not frequently turned on / off, and its life can be extended.
In FIG. 4, one of step 201 and step 203 or step 202 and step 207 may be omitted.

  3 and 4, the control when the pressure pump is turned on has been described, but the same control can be performed for the pressure pump being turned off. In other words, when the continuous operation (on) time of the pressure pump is less than 5 minutes, it is not turned off, and the temperature and / or humidity conditions and solar radiation conditions to be turned off continue for 30 seconds or more. After that, turn it off.

Examples of the present invention will be described below.
During summer days, the inside of facilities such as glass greenhouses receive solar radiation, so even if they are ventilated, they become higher than the outside temperature. As a premise, the sprayed mist evaporates in at least 1 minute. In this setting method, the amount of water sprayed from the mist is predicted from a simplified heat balance equation, but it may be predicted more precisely using fluid simulation software or the like.

Targeting a facility with a floor area of 300 m 2 and a ventilation rate of 20 (m 3 / s), the outside air temperature is 33.0 ° C., and the amount of solar radiation incident on the target facility is 500 W per 1 m 2 of the floor area. Assuming a weather condition of 75W per 1m 2 of floor area when the sun is hidden in the clouds and assuming the weather condition of 75W per floor area, we will explain the case where we want to lower the temperature by 4 ° C compared to when not spraying by mist spray. do.
First, the amount of mist spray when the solar radiation amount is 500 W per 1 m 2 of the floor area is obtained. When mist is not sprayed, the heat load in the facility is mainly solar radiation load. Therefore, it may be considered that the heat balance in the facility is balanced by exhausting this solar radiation load with ventilation.
The amount of solar radiation in the facility is represented by 300 × 500 (W). The amount of heat exhausted by ventilation is the estimated temperature DT1 (° C) in the facility when balanced, the constant pressure specific heat of air is 1.0 × 10 3 J / (kg · K), and the density of air is 1.2 When expressed as (kg / m 3 ), it is represented by 1.0 × 10 3 × 1.2 × (DT1-33.0) × 20 (W). Since these two are balanced, the predicted temperature DT1 is 39.25 ° C.

Next, the heat balance in the facility at the time of mist spraying is the amount of solar radiation that enters the facility,
It can be considered that the amount of heat generated by mist is balanced with the sum of the amount of heat discharged with ventilation.
The amount of solar radiation in the facility is represented by 300 × 500 (W). The sum of the heat of vaporization due to mist and the amount of heat exhausted due to ventilation is the amount of mist spray for lowering the temperature by 4 ° C. than when not sprayed by mist spray, mw1 (g / s), and the heat of vaporization of mist is 2,447 (J / G), it is represented by 2477 × mw1 + 1.0 × 10 3 × 1.2 × ((39.25-4) −33.0) × 20 (W). Since these two are balanced, the mist spray amount mw1 is 38.8 (g / s).

Next, the amount of spray water of mist when the solar radiation amount is 75 W per 1 m 2 of the floor area is obtained. Since it has been experimentally known that mist condensation tends to occur gradually when the temperature inside the facility falls below 32 ° C., the amount of mist water mw2 for setting the temperature inside the facility to 32 ° C. ( g / s).
At this time, since the temperature inside the facility is lower than the outside temperature, the heat balance in the facility during mist spraying flows from the outside with the amount of heat generated by mist, the amount of solar radiation incident on the inside of the facility, and ventilation. It can be considered that the sum of heat is balanced.
The amount of heat generated by mist is expressed by 2477 × mw2 (W). The sum of the inflow heat quantity accompanying the amount of solar radiation incident on the inside of the facility and ventilation is represented by 300 × 75 + 1.0 × 10 3 × 1.2 × (33.0−32) × 20 (W). Since these two are balanced, the mist spray amount mw2 is 18.8 (g / s).
Therefore, of the two temperature lowering sprayers 10 and 20, the first temperature lowering sprayer 10 that sprays continuously regardless of fluctuations in solar radiation and the second temperature lowering sprayer that stops when the solar radiation changes. The spray amount of the device 20 may be 20.0 (g / s) and 18.8 (g / s), respectively.

Note that these values do not need to be exact. For example, even if (20 g / s) and 19 (g / s) are used, there is no significant problem.
Although the floor area of the target facility is 300 m 2 and the ventilation rate is 20 (m 3 / s), it may be set appropriately according to the target facility.
Moreover, although the outdoor temperature during the daytime in summer is 33.0 ° C., a representative value of the daytime temperature during a sunny day in summer in the area where the target facility is located may be used.
Also, inside 500W per floor area 1 m 2 the amount of solar radiation incident facilities, but the sun and the solar radiation amount entering the interior of the facility when the clouds and floor area 1 m 2 per 75W, solar radiation in the facilities of the subject What is necessary is just to set appropriately from quantity.
Moreover, although it presupposed that the temperature is lowered by 4 ° C. than when not sprayed by mist spraying, it may be 3 ° C. or 5 ° C. However, since it has been experimentally found that when the temperature exceeds 5 ° C., wetting is likely to occur gradually.

Moreover, although described with two systems, the 1st temperature falling spray apparatus 10 sprayed continuously irrespective of the fluctuation | variation of solar radiation, and the 2nd temperature falling spray apparatus 20 stopped when solar radiation fluctuates, for example, When the spray amount of the first temperature lowering spray device 10 is 20 (g / s) and the spray amount of the second temperature lowering spray device 20 is 40 (g / s), the second temperature lowering spray device 20 can be further divided into two systems, and can be divided into three systems in total.
About the setting method of the control conditions of mist start / stop, the first temperature-lowering spraying device 10 that sprays continuously regardless of the variation of solar radiation and the second temperature-lowering spraying device 20 that is stopped when the solar radiation varies. A case of two systems will be described as an example.
What is necessary is just to drive | operate the 1st temperature-fall spraying apparatus 10 sprayed continuously irrespective of the fluctuation | variation of solar radiation so that wetting may not generate | occur | produce. The mist amount adjustment unit 40 has a temperature DT of 32 ° C. based on the values of the temperature DT (° C.) and the relative humidity RH (%) input from the temperature / humidity sensor 31 installed at an appropriate position in the facility. When the relative humidity is 70% or less, the mist is sprayed. Moreover, when temperature DT is less than 32 degreeC or relative humidity exceeds 70%, spraying of mist is stopped.

Next, the temperature lowering spray device 20 that is stopped when the solar radiation fluctuates operates so as to cope with the rapid fluctuation of the solar radiation. Therefore, in addition to the temperature of 32 ° C. and the relative humidity of 70% or less, which is known to be a condition in which wetting is likely to occur experimentally, the amount of solar radiation S1 input from the solar radiation sensor 32 is 300 (W / m 2 ) Spray mist under the above conditions. Further, when the temperature DT is less than 32 ° C., the relative humidity exceeds 70%, or the solar radiation amount S1 is less than 300 (W / m 2 ), the mist spraying is stopped.
As an example, 300 (W / m 2 ) is used as the standard for the amount of solar radiation, but it may be 250 (W / m 2 ) or 350 (W / m 2 ). However, if it is set to a large value, the stopping time becomes longer and the cooling effect may be reduced. On the other hand, when the value is small, the mist does not completely evaporate and the possibility of wetting increases. The amount of solar radiation used in the mist spray amount setting method is preferably about 70% of 500 W per 1 m 2 of floor area.

  In the above example, the solar radiation sensor 32 is installed at an appropriate position inside the greenhouse. However, when it is difficult to install the solar radiation sensor 32 inside the greenhouse, the solar radiation transmittance ε of the facility is obtained in advance and the solar radiation sensor 32 is placed in an appropriate outdoor location. A value obtained by multiplying the solar radiation amount S2 from the installed solar radiation sensor 32 by the solar radiation transmittance ε of the facility may be used as the solar radiation amount S1 in the facility.

In the above example, the variation in the amount of solar radiation is measured by the solar radiation sensor 32 and used to determine whether spraying is necessary. However, when the amount of solar radiation varies, as a result, the temperature of the target temperature drop varies, It is also possible to determine whether or not spraying is necessary using the air temperature instead of the amount of solar radiation. For example, when the amount of solar radiation is 500 (W / m 2 ) and the first temperature-falling spraying device 10 and the second temperature-falling spraying device 20 are simultaneously operated, the predicted temperature of the temperature-lowering target space is 35.25 ° C. and the amount of solar radiation For the first temperature lowering using 34 ° C., which is close to the intermediate value of the predicted temperature 32 ° C. of the target temperature lowering when only the first temperature lowering spray device 10 is operating at 75 (W / m 2 ). The spray device 10 stops mist spraying when the temperature DT is 32 ° C. or more and the relative humidity is 70% or less, and stops spraying mist when the temperature DT is less than 32 ° C. or the relative humidity exceeds 70%.
When the temperature DT is 34 ° C. or more and the relative humidity is 60% or less, the second temperature lowering spray device 20 sprays mist, and when the temperature DT is less than 34 ° C. or the relative humidity exceeds 60%, the mist Stop spraying.

  In the above example, the temperature and humidity in the greenhouse are measured, and the first temperature lowering sprayer 10 is controlled based on the results. From the viewpoint of simplifying the measurement system, it is also possible to measure only the temperature in the greenhouse and control the on / off of the first temperature-falling sprayer 10 based on the result. In this case, it is preferable that the temperature condition for stopping the spraying of mist is set higher than when the humidity is not measured to reliably prevent wetting in the greenhouse.

In the present invention, when a spraying device for spraying mist is applied to a greenhouse, various problems may be caused if the spray amount of mist is controlled based on the temperature in the greenhouse or the temperature and humidity (first condition). Therefore, based on the second condition relating to the intensity of sunlight incident on the greenhouse in addition to the first condition, a new finding has been found by the inventor who intends to control the amount of mist injected into the greenhouse. Is based.
In the example described above, the mist spray amount is controlled by on / off control of the pressurizing pump in consideration of simplification and cost reduction of the spray device.
Of course, it is not prohibited to control the mist spray amount by using a pressurizing pump capable of changing the discharge amount or a water control valve capable of changing the flow rate. Further, a shutter can be provided at the tip of the spray nozzle to change the amount of mist ejected from the spray nozzle.

The present invention is not limited to the description of the embodiments and examples of the invention described above. Various modifications may be included in the present invention as long as those skilled in the art can easily conceive without departing from the description of the scope of claims.
The contents of papers, published patent gazettes, patent gazettes, and the like specified in this specification are incorporated by reference in their entirety.

DESCRIPTION OF SYMBOLS 1 Multi temperature fall system 10 1st temperature fall spray apparatus 11,21 Pressure pump 12,22 Water distribution pipes 14,24 Spray nozzle 15,25 Water control valve 20 2nd temperature fall spray apparatus 31 Temperature / humidity sensor 32 Solar radiation sensor 40 Mist amount adjustment unit 41 First adjustment unit 42 Second adjustment unit

Claims (11)

  1. A control method for a temperature lowering spray device arranged in a facility where sunlight is incident,
    The temperature lowering spray device includes a pressurized water supply unit, and a spray nozzle that ejects constant-pressure pressurized water supplied from the pressurized water supply unit to form mist.
    At least two sets of the temperature lowering spray device are arranged in the facility to constitute a multi-temperature lowering system,
    Controlling the operation of the first spraying device for lowering the temperature based on the temperature in the facility or the temperature and humidity in the facility;
    The control method of the temperature falling spray apparatus which controls operation | movement of the said 2nd temperature falling spray apparatus based on the intensity | strength of the said sunlight which injects into the said facility.
  2.   2. The control method according to claim 1, wherein the operation control of the first and second temperature lowering spray devices is based on on / off of a pressurization pump provided in the pressurization water supply unit.
  3. The first temperature-decreasing spray device has a pressurizing pump when the temperature in the facility, or the temperature and humidity are the first reference conditions, and the first reference conditions continue for a first threshold time or longer. On or off,
    The second temperature lowering spray device is pressurized when the intensity of sunlight incident on the facility is a second reference condition and the second reference condition continues for a second threshold time or more. The control method according to claim 2, wherein the pump is turned on or off.
  4. When the temperature DT is less than 32 ° C. or the relative temperature RH is more than 70% as the first reference condition, the pressure pump is turned off, and the pressure pump is turned on under other conditions,
    The control method according to claim 3, wherein, as the second reference condition, the pressure pump is turned on when an amount of solar radiation is 300 (W / m 2 ) or more, and the pressure pump is turned off under other conditions. .
  5. The control method according to any one of claims 2 to 4, wherein an off time and / or an on time of the pressurizing pump is set to a third threshold time or more that can reduce a load of the pressurizing pump.
  6. The first reference condition satisfies both the following conditions (A) and (B):
    (A) When the temperature in the facility or the temperature and humidity are the 1-1 standard conditions and the 1-1 standard condition continues for the fourth threshold time or longer, the pressure pump is turned on. To
    (B) The pressure pump is turned off when the temperature in the facility, or the temperature and humidity are the first and second reference conditions, and the first and second reference conditions continue for the fifth threshold time or longer. The control method according to claim 3.
  7. A first temperature lowering spray device comprising a first pressure pump and a first spray nozzle; a second temperature lowering spray device comprising a second pressure pump and a second spray nozzle; It is a multi-temperature drop system that combines,
    A first detection unit that detects the temperature of the atmosphere of the temperature-lowering target space, or the temperature and humidity;
    A second detector for detecting the intensity of sunlight;
    A first adjusting unit that controls on / off of the first pressurizing pump based on a detection result of the first detecting unit;
    And a second adjusting unit that controls on / off of the second pressurizing pump based on a detection result of the second detecting unit.
  8. 8. The system of claim 7, wherein the first pressurization pump and the second pressurization pump have the same rating, and the first spray nozzle and the second spray nozzle have the same rating.
  9. Based on the detection result of the first detection unit, when the temperature of the temperature drop target space, or the temperature and humidity are the first reference condition, and the first reference condition continues for a first threshold time or more. The first adjustment unit outputs a signal for turning on or off the first pressurizing pump,
    Based on the detection result of the second detection unit, when the intensity of sunlight incident on the temperature drop target space is the second reference condition, and the second reference condition continues for a second threshold time or longer The system according to claim 7 or 8 , wherein the second adjustment unit outputs a signal for turning on or off the second pressurizing pump.
  10. The first adjusting unit is further provided with a first pressurizing pump control device that maintains an off time and / or an on time of the first pressurizing pump for a third threshold time,
    Wherein the second adjustment unit, the second pressurizing pump control device is further provided that the off-time and / or on-time of the second pressure pump to maintain the third threshold time, to claim 7 The described system.
  11. The first reference condition satisfies both of the following conditions (a) and (b):
    (A) The first adjustment when the temperature of the space to be cooled, or the temperature and humidity are the 1-1 reference conditions, and the 1-1 reference conditions continue for the fourth threshold time or longer. The part turns on the first pressurizing pump,
    (B) The first temperature when the temperature of the space to be cooled, or the temperature and humidity are the first and second reference conditions, and the first and second reference conditions continue for the fifth reference time or more. The system according to claim 9, wherein the adjustment unit turns off the first pressurizing pump.
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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62294014A (en) * 1986-06-11 1987-12-21 Matsushita Seiko Kk Control unit of mist spray system
US5074124A (en) * 1990-08-23 1991-12-24 John Chapman Cooled air environment for air conditioners
JP2006138589A (en) * 2004-11-15 2006-06-01 Shimizu Corp Cooling structure for space
JP4488510B2 (en) * 2004-12-21 2010-06-23 能美防災株式会社 Temperature drop spray system
CN101206063B (en) * 2006-12-19 2011-11-23 三机工业株式会社 Refrigeration equipment
JP4400891B2 (en) * 2007-04-06 2010-01-20 株式会社いけうち 3D area cooling system
JP2009006217A (en) * 2007-06-26 2009-01-15 Norihiko Hirano Liquid spray system and spray method

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