JP6866502B2 - Humidification / cooling air blower Wet curtain device and control method - Google Patents

Description

The present invention relates to the field of greenhouse heating / humidifying technology, and particularly to a humidifying / cooling air blower wet curtain device and a control method.

Conventionally, in the design of a wind blower wet curtain heating device, a wet curtain and a wind blower are installed on both sides of the greenhouse, and the air is exhausted by the wind blower to create a negative pressure in the greenhouse, and the outdoor air is cooled through the wet curtain. To.

In such a temperature-lowering design, the temperature distribution tends to be uneven in the greenhouse, and as the distance between the wet curtain and the wind blower increases, the temperature difference between the wet curtain end and the wind blower end becomes larger and larger. And affect production. Generally, if the distance between the wet curtain and the wind blower exceeds 40 meters, the negative pressure type wind blower wet curtain lowering temperature cannot be adopted. In the conventional negative pressure type winder wet curtain lowering temperature, since simple simple start and stop control is used to control the blower, it is not possible to obtain an appropriate amount of lowering temperature ventilation, and the room temperature repeatedly rises and falls, and the air The flow suddenly starts or stops, and the environment in the greenhouse is not stable, which affects the operation of equipment and the growth of crops in the greenhouse. Furthermore, in the conventional negative pressure type wind blower wet curtain temperature lowering device, pathogens and insect sources of crops in the greenhouse are likely to be sucked in, and since the wet curtain and the wind blower are located at both ends of the greenhouse, an intake port and an exhaust port are provided. It is necessary to make it difficult to arrange the space inside and outside the greenhouse, and the wet curtains and wind blowers at both ends of the greenhouse block a lot of sunlight from outside the greenhouse, which greatly affects the lighting on the wet curtain side and the wind blower side in the greenhouse. .. In addition, the wet curtain is a device with high humidification efficiency and good humidification effect. Especially in the warming period in winter, the humidity of the greenhouse is generally insufficient and it is necessary to humidify it. In the design of the wet curtain temperature lowering device, the inside air circulation through the wet curtain cannot be formed in the greenhouse, and the wet curtain cannot be used as a humidifier.

In order to eliminate the defects of the conventional air blower wet curtain lowering device, the present invention provides a humidifying / lowering air blower wet curtain device and a control method, and the greenhouse adopts a positive pressure type lowering design and is wet on the same side of the greenhouse. There are curtains and winders. The intake port side window motor and angle sensor adjust the angle change of the intake port side window baffle according to the change of environmental factors inside and outside the greenhouse, and the new air volume of the greenhouse and the circulating air volume in the greenhouse are automatically adjusted. Accurate control of the temperature inside the greenhouse. When the greenhouse needs to be humidified during the winter-spring season, the air in the greenhouse is provided by the indoor humidity sensor, indoor temperature sensor, glass baffle, wet curtain water supply electromagnetic valve, wet curtain, intake side window baffle and air blower. The internal circulation of the glass is realized, and the water is humidified by the wet curtain water supply electromagnetic valve and the wet curtain. A positive pressure type temperature reduction design, an intake port insect net, and a ceiling window exhaust net insect net design are adopted to reduce the pathogenesis of crops in the greenhouse and the invasion of insect sources. When the greenhouse is cooled or humidified by blowing air using a wind blower, a ventilation duct and an exhaust port, the distribution of temperature or humidity in the greenhouse is made uniform. A radiation sensor, a temperature sensor, and a humidity sensor are provided above the greenhouse outdoor air intake insect net. The greenhouse temperature sensor and indoor humidity sensor are located in the center of the greenhouse. By adopting the proportional integral control of the feedforward method in the control method, the accuracy of the temperature control at the time of temperature decrease is improved. The humidifying / cooling air blower wet curtain device can be widely applied to greenhouses having high environmental control accuracy and good temperature lowering and insect repellent effects.

The technical proposal adopted in the present invention in order to achieve the above object is as follows. A humidifying / cooling air blower wet curtain device, which is used to lower the temperature of a greenhouse and increase the humidity. The temperature lowering device includes a ceiling window motor, a radiation sensor, a temperature sensor, a humidity sensor, and a side window baffle. Drive mechanism, angle sensor for detecting the opening of the intake port side window baffle, intake port side window baffle, wet curtain, wet curtain water supply electromagnetic valve, wind blower, glass baffle, housing, exhaust It is provided with a mouth, a ventilation duct, an indoor temperature sensor, an indoor humidity sensor, and a ceiling window exhaust port. An outdoor intake port is opened on one side wall of the greenhouse, and an intake port side window is provided on the outdoor intake port. The baffle is hinged, the opening degree of the intake port side window baffle is controlled by the side window baffle drive mechanism, and the wet curtain and the wind blower are connected by a housing and attached to both sides of the housing, respectively. The outflow is controlled by the wet curtain water supply electromagnetic valve, a glass baffle is provided above the housing located on the wet curtain side, and the side wall on the side having the glass baffle and the outdoor intake port of the greenhouse serves as the indoor intake port of the greenhouse. The wind blower communicates with the ventilation duct, the ventilation duct is provided with an exhaust port, the radiation sensor, the temperature sensor, and the humidity sensor are provided outside the greenhouse, and the indoor temperature sensor and the indoor humidity are provided. The sensor is provided in the greenhouse, a plurality of ceiling windows are opened at the top of the greenhouse, a ceiling window motor is attached to the ceiling window, and the ceiling window motor, radiation sensor, temperature sensor, humidity sensor, etc. The angle sensor, the wet curtain water supply electromagnetic valve, the intake port side window motor, the wind blower, the indoor temperature sensor, and the indoor humidity sensor are all connected to the controller.

Further, the side window baffle drive mechanism includes an arc-shaped push rod rack and an intake port side window motor, and the side window motor is attached to the outside of the side wall of the greenhouse at the outdoor intake port, and the output shaft of the side window motor. A gear is attached to the wheel, one end of the arc-shaped push rod rack is fixed to the window baffle on the intake port side, and the gear and the arc-shaped push rod rack are meshed and transmitted.

Further, the radiation sensor, the temperature sensor, and the humidity sensor are provided above the greenhouse outdoor intake port.

Further, the indoor temperature sensor and the indoor humidity sensor are provided in the center of the greenhouse.

Further, the angle sensor is provided between the greenhouse side wall and the intake port side window baffle.

Further, the intake port insect repellent net is provided at the intake port in the greenhouse.

Further, the ceiling window exhaust port is provided with an insect repellent net for the ceiling window exhaust port.

と、ウエットカーテン給水電磁弁が開弁する閾値dと、ウエットカーテン給水電磁弁が開弁する降温湿度閾値h₁と、ウエットカーテン給水電磁弁が開弁する湿度増加閾値h₂とを設定し、コントローラが室外気温センサ、室外湿度センサ、放射強度センサ、室内気温センサ及び室内湿度センサから伝達される情報を受信するステップ１と、
ステップ２であって、室外気温センサ、及び室内気温センサは、検出した温度信号、及び放射強度センサは、検出した室内の太陽放射値をコントローラに伝達し、コントローラは、受信した室外温度及び放射強度の室内温度への影響値に基づき、次式によって室内の所望気温T_qを計算し、

ただし、T_qは室内の所望気温であり、T_sは設定された標準温度であり、T_oは室外温度の室内温度への影響値であり、T_rは太陽放射強度の室内温度への影響値であり、k₁は、室外温度の室内温度への影響値を計算する影響係数であり、tは現在の室外温度であり、t₀は指定された室外温度の参考値であり、k₂は太陽放射強度の室内温度への影響値を計算する影響係数であり、rは現在の室外放射強度であり、r₀は指定された室外放射強度の参考値であるステップ２と、
ステップ３であって、コントローラが室内の所望気温T_qを計算して取得し、室内の所望気温T_qが室内において降温を起動する閾値温度T_cよりも高い場合、加湿・降温風機ウエットカーテン装置が降温モードに入り、室内の所望気温T_qが室内において降温を起動する閾値温度T_cよりも低い場合、加湿・降温風機ウエットカーテン装置が加湿モードに入り、コントローラが室内気象因子に基づき、装置の異なるモードでの風機の起動及び停止、室外吸気口の新風量、ウエットカーテン給水電磁弁の開弁又は閉弁、天井窓排気口の開放又は閉鎖を計算制御し、風機の起動又は停止状態は、次式のように計算され、

ただし、P_fは風機の起動又は停止状態であり、１は起動であり、０は停止であり、T_cは室内において降温を起動する閾値温度であり、bは風機が降温を起動する閾値であり、H_wは温室内において湿度増加を起動する湿度閾値であり、H_iは室内湿度センサが検出した湿度値であり、h₂はウエットカーテン給水電磁弁が開弁する湿度増加閾値であり、T_iは室内気温センサが検出した実際の温度値であり、dはウエットカーテン給水電磁弁が開弁する閾値であるステップ３と、
ステップ４であって、コントローラは、角度センサ、吸気口側窓モータが作動することで、吸気口側窓バッフルと吸気口立面とのなす角を制御することにより、温室に入る新風量を制御し、室外吸気口の新風量の計算では、室内において現在実際に測定した気温t₂(n)と５分前の室内気温t₂(n−１)との差｜t₂(n−１)−t₂(n)｜で室内気温の変化の速さを測り、
閾値δを設定し、｜t₂(n−１)−t₂(n)｜≧δであると、比例調節法を用いて５分間の新風量Q(n＋1)を計算して、次式のように得られ、

ただし、Qは設定される標準新風量であり、t₁(n＋2)は１０分後の室内の所望気温であり、k_pは比例係数であり、Q_oは室外温度の新風量の計算への影響値であり、Q_rは太陽放射照度の新風量の計算への影響値であり、k_oは室外温度の新風量の計算への影響係数であり、k_rは太陽放射照度の新風量の計算への影響係数であり、
｜t₂(n−１)−t₂(n)｜＜δかつ｜t₂(n)−t₁(n＋2)｜＞δ₁であるとき、積分により、定常状態誤差が解消されると、次の５分間の新風量Q(n＋1)は、次式のようになり、

ただし、δ_iは正値積分係数であり、t(n)は設定された室内気温の降温温度であり、δ₁は設定された別の閾値であるステップ４と、
ステップ５であって、室外湿度センサ、室内湿度センサ、及び室内温度センサは５分間ごとに信号の検出を行い、検出した信号をコントローラに伝達し、コントローラは、検出した信号に基づき、ウエットカーテン給水電磁弁の開弁と閉弁を制御し、次式のように計算し、

ただし、P_cはウエットカーテン給水電磁弁の開弁又は閉弁の状態であり、１は開弁を示し、０は閉弁を示し、H_iは室内湿度センサが検出した実際の湿度値であり、H_oは室外湿度センサが検出した湿度値であり、T_iは室内気温センサが検出した実際の温度値であり、T_cは設定される室内において降温を起動する温度閾値であり、dはウエットカーテン給水電磁弁が開弁する温度閾値であり、H_wは、温室内において湿度増加を起動する湿度閾値であり、h₁はウエットカーテン給水電磁弁が開弁する降温湿度閾値であり、h₂はウエットカーテン給水電磁弁が開弁する湿度増加閾値であるステップ５と、を含む。 Another object of the present invention is to provide a method for controlling the above-mentioned humidifying / cooling air blower wet curtain device, and the method is described in the present invention.
In step 1, first, the controller has a temperature threshold T _{c that activates the temperature decrease in the room, a humidity threshold H w} that activates the humidity increase, and a threshold that the wind blower activates the temperature decrease.

, The threshold d at which the wet curtain water supply electromagnetic valve opens, the temperature / humidity threshold h _{1 at} which the wet curtain water supply electromagnetic valve opens, and the humidity increase threshold h ₂ at which the wet curtain water supply electromagnetic valve opens are set. Step 1 in which the controller receives information transmitted from the outdoor air temperature sensor, the outdoor humidity sensor, the radiation intensity sensor, the indoor air temperature sensor, and the indoor humidity sensor.
In step 2, the outdoor air temperature sensor and the indoor air temperature sensor detect the temperature signal, and the radiation intensity sensor transmits the detected indoor solar radiation value to the controller, and the controller receives the received outdoor temperature and radiation intensity. Calculate _{the desired indoor air temperature T q} by the following formula based on the effect value on the indoor temperature.

However, T _q is the desired temperature of the room, T _s is the standard temperature set, T _o is the impact value of the indoor temperature of the outdoor temperature, T _r is the influence of the room temperature of the solar radiation intensity It is a value, k ₁ is an influence coefficient for calculating the influence value of the outdoor temperature on the indoor temperature, t is the current outdoor temperature, t ₀ is a reference value of the specified outdoor temperature, and k ₂ Is the influence coefficient for calculating the effect value of the solar radiation intensity on the indoor temperature, r is the current outdoor radiation intensity, and r ₀ is the reference value of the specified outdoor radiation intensity in step 2 and
A step 3, the controller is obtained by calculating the desired air temperature T _q of the room, if desired temperature T _q of the room is higher than the threshold temperature T _c starting the cooling in the indoor, humidified and cooled blower wet curtain device Enters the cooling mode, and when the desired indoor air temperature T _{q is lower than the threshold temperature T c} that activates the indoor temperature, the humidification / cooling air blower wet curtain device enters the humidification mode, and the controller is based on the indoor weather factor. The start and stop of the air blower in different modes, the new air volume of the outdoor intake port, the opening or closing of the wet curtain water supply electromagnetic valve, the opening or closing of the ceiling window exhaust port are calculated and controlled, and the start or stop state of the wind fan is , Calculated as

However, P _f is the start or stop state of the wind blower, 1 is the start, 0 is the stop, T _c is the threshold temperature at which the temperature drop is started indoors, and b is the threshold temperature at which the wind blower starts the temperature drop. Yes, H _w is the humidity threshold that activates the humidity increase in the greenhouse, H _i is the humidity value detected by the indoor humidity sensor, and h ₂ is the humidity increase threshold that the wet curtain water supply electromagnetic valve opens. T _i is the actual temperature value detected by the indoor air temperature sensor, and d is the threshold value at which the wet curtain water supply electromagnetic valve opens.
In step 4, the controller controls the amount of new air entering the greenhouse by controlling the angle between the intake port side window baffle and the intake port elevation by operating the angle sensor and the intake port side window motor. However, in the calculation of the new air volume at the outdoor air intake _{, the difference between the temperature t 2} (n) actually measured indoors and the indoor temperature t ₂ (n-1) _{5 minutes ago | t 2} (n-1) Measure the speed of change in indoor temperature with −t _{2 (n) ｜}
When the threshold value δ is set and | t ₂ (n-1) −t ₂ (n) | ≧ δ, the new air volume Q (n + 1) for 5 minutes is calculated using the proportional adjustment method, and the following equation is used. Obtained like

However, Q is the standard new _{air volume to be set, t 1} (n + 2) is the desired indoor temperature after 10 minutes, k _p is a proportional coefficient, and Q _o is the calculation of the new air volume for the outdoor temperature. The influence value, Q _r is the influence value on the calculation of the new air volume of the solar irradiance, k _o is the influence coefficient on the calculation of the new air volume of the outdoor temperature, and k _r is the influence value of the new air volume of the solar irradiance. It is a coefficient of influence on the calculation.
When | t ₂ (n-1) −t ₂ (n) | <δ and | t ₂ (n) −t ₁ (n + 2) |> δ ₁ and the steady-state error is eliminated by integration, The new air volume Q (n + 1) for the next 5 minutes is as shown in the following equation.

However, δ _i is the positive integration coefficient, t (n) is the set indoor air temperature decrease temperature, and δ ₁ is another set threshold in step 4 and
In step 5, the outdoor humidity sensor, the indoor humidity sensor, and the indoor temperature sensor detect signals every 5 minutes and transmit the detected signals to the controller, and the controller supplies wet curtain water based on the detected signals. Control the opening and closing of the solenoid valve, calculate as follows,

However, P _c is the state of opening or closing of the wet curtain water supply electromagnetic valve, 1 denotes a valve opening, 0 indicates the closing, H _i is the actual humidity value room humidity sensor has detected , H _o is the humidity value detected the outdoor humidity sensor, T _i is the actual temperature value room temperature sensor detects, T _c is the temperature threshold to start the cooling in a room to be set, d is The temperature threshold at which the wet curtain water supply electromagnetic valve opens, H _w is the humidity threshold at which the humidity increase is activated in the greenhouse, and h ₁ is the temperature / humidity threshold at which the wet curtain water supply electromagnetic valve opens. ₂ includes step 5 which is a humidity increase threshold at which the wet curtain water supply electromagnetic valve opens.

According to steps 1 to 5, the controller controls the start or stop of the wind blower, the opening and closing of the wet curtain water supply electromagnetic valve, the opening and closing of the ceiling window in the apparatus, and based on the new air volume of the outdoor intake port. By adjusting the opening angle of the window baffle on the intake port side, the temperature and humidity in the greenhouse are adjusted so that the indoor temperature and humidity meet the required requirements.

The beneficial effect of the present invention is that the wind blower and the wet curtain in the device according to the present invention are located on the same side as compared with the conventional negative pressure type wet curtain device, and the influence on the length design of the greenhouse is small, and the temperature is lowered. At this time, the temperature distribution in the greenhouse becomes more uniform. By installing the wet curtain and the wind blower on the same side of the greenhouse, the arrangement of the conventional wet curtain wind blower is optimized, the awning in the greenhouse by the wind blower is reduced, and the daylighting property and the space utilization rate of the greenhouse are improved. By changing the angle of the window baffle on the intake port side, the new air volume entering the greenhouse and the circulating air volume in the greenhouse are adjusted to achieve the purpose of accurately adjusting and controlling the temperature inside the greenhouse, and the conventional wet curtain wind blower is activated. And stop to avoid defects where the temperature in the greenhouse changes rapidly. By blowing air through a ventilation duct, the distribution of temperature and humidity in the greenhouse is made uniform. The purpose of humidifying the greenhouse can be achieved by the internal circulation of air in the greenhouse and the flooding of wet curtains. The positive pressure design of the greenhouse production area and the design of the insect repellent net at the intake and exhaust ports reduce the invasion of harmful pathogens and insect sources into the greenhouse. In the control method, feedforward control is adopted to improve the accuracy of temperature and humidity control.

It is a principle diagram of this invention. It is a side view of the temperature lowering mode (mixed intake air between indoor and outdoor) of this invention. It is a side view of the temperature lowering mode (complete outdoor intake) of this invention. It is a side view of the humidification mode of this invention.

Hereinafter, the present invention will be further described with reference to the drawings and examples.

As shown in FIG. 1, a humidifying / cooling air blower wet curtain device is used for lowering and humidifying a greenhouse, and the heating device includes a ceiling window motor 1, a radiation sensor 2, and a temperature sensor 3. Humidity sensor 4, side window baffle drive mechanism, angle sensor 8 that detects the opening degree of the intake port side window baffle, intake port side window baffle 9, wet curtain 10, wet curtain water supply electromagnetic valve 11, and wind blower. A glass baffle 15, a housing 16, an exhaust port 17, a ventilation duct 18, an indoor temperature sensor 19, an indoor humidity sensor 20, and a ceiling window exhaust port 23 are provided. An outdoor intake port 5 is opened on one side wall of the greenhouse, an intake port side window baffle 9 is hinged to the outdoor intake port 5, and the opening degree of the intake port side window baffle 9 is controlled by a side window baffle drive mechanism. To. The wet curtain 10 and the wind fan 13 are connected by a housing 16 and are attached to both sides of the housing 16, respectively. The wet curtain 10 is controlled by a wet curtain water supply solenoid valve 11. A glass baffle 15 is provided above the housing 11 located on the wet curtain 10 side, and the greenhouse indoor air intake port 14 is formed by the glass baffle 15 and the side wall of the greenhouse on the side having the outdoor air intake port 5. The air blower 13 communicates with the ventilation duct 18, an exhaust port 17 is provided in the ventilation duct 18, a seed plantation nursery 21 is provided in the ventilation duct 18, and a plant 22 is planted in the nursery. The radiation sensor 2, the temperature sensor 3, and the humidity sensor 4 are provided outside the greenhouse, and the indoor temperature sensor 19 and the indoor humidity sensor 20 are provided inside the greenhouse. A plurality of ceiling windows are opened at the top of the greenhouse, and a ceiling window motor 1 is attached to the ceiling windows. The ceiling window motor 1, radiation sensor 2, temperature sensor 3, humidity sensor 4, angle sensor 8, wet curtain water supply electromagnetic valve 11, intake port side window motor 12, wind blower 13, room temperature sensor 19, and room humidity sensor 20 are , Both are connected to the controller. As the controller, a product of Zhejiang University model number ZJU-AES-05 may be used, but the controller is not limited thereto.

Further, the side window baffle drive mechanism includes an arc-shaped push rod rack 7 and an intake port side window motor 12, and the side window motor 12 is attached to the outside of the greenhouse side wall at the outdoor intake port 5, and the side window motor 12 A gear is attached to the output shaft of the above, one end of the arc-shaped push rod rack 7 is fixed to the intake port side window baffle 9, and the gear and the arc-shaped push rod rack 7 are meshed and transmitted, that is, the form of internal meshing transmission is configured. Has been done.

Further, the radiation sensor 2, the temperature sensor 3, and the humidity sensor 4 are provided above the greenhouse outdoor air intake port 5.

Further, the indoor temperature sensor 19 and the indoor humidity sensor 20 are provided in the center of the greenhouse.

Further, the angle sensor 8 is provided between the greenhouse side wall and the intake port side window baffle 9, and is used to detect the size of the opening of the intake port side window baffle 9.

Further, the intake port insect repellent net 6 is provided at the intake port 5 in the greenhouse.

Further, the ceiling window exhaust port 23 is provided with a ceiling window exhaust port insect repellent net 24.

As shown in FIG. 2, in the temperature lowering mode, the controller calculates the new air volume in the room based on the indoor and outdoor environmental factors, and operates the angle sensor 8 and the intake port side window motor 12 to operate the intake port side window motor 12. The angle between the side window baffle 9 and the elevation of the outdoor intake port is controlled, the amount of new air entering the wet curtain 10 via the outdoor intake port 5 is adjusted, and the fresh air in the outdoor intake port 5 and the indoor intake port 14 After the indoor air is mixed and enters the wet curtain 10, the temperature is lowered to the cold air, the cold air enters the greenhouse uniformly through the air blower 13, the ventilation duct 18 and the exhaust port 17 and is cooled, and the cold air enters the greenhouse. After that, it receives heat and rises, enters the indoor intake port 14 and the wet curtain 10, circulates and lowers the temperature, or is discharged to the outside through the ceiling window exhaust port 23.

As shown in FIG. 3, the temperature lowering mode has been entered and the maximum temperature lowering load has been reached. The intake port side window baffle 9 and the back surface of the intake port form an angle of 90 degrees, the outdoor intake port 5 is completely open, and the indoor intake port 14 is completely closed.

As shown in FIG. 4, the humidification mode is entered. The intake port side window baffle 9 is superposed on the back surface of the intake port, the outdoor intake port 5 is completely closed, and the indoor intake port 14 is completely opened. The dry air in the room enters the wet curtain 10 through the indoor intake port 14, the wet curtain water supply electromagnetic valve 11 opens, is humidified by the moist air, and passes through the air blower 13, the ventilation duct 18, and the exhaust port 17 to the greenhouse. The moist air enters the greenhouse and dries, then rises, and enters the indoor air intake port 14 and the wet curtain 10 to be circulated and humidified.

In the control of the humidifying / cooling air blower wet curtain device, the device is controlled to enter the cooling mode or the humidifying mode according to the detected environmental factors inside and outside the greenhouse. Depending on the temperature and humidity value set in the greenhouse and the temperature and humidity value actually measured, start and stop of the wind blower, ceiling window motor, side window ventilation port motor, and closing and opening the wet curtain water supply solenoid valve. To calculate and judge.

In the control of the new air volume in the cooling mode of the device, the angle of the window baffle on the intake port side changes to adjust the new air volume entering the greenhouse and the circulating air volume in the greenhouse, and accurately adjust and control the temperature inside the greenhouse. To do. Since the temperature inside the greenhouse is affected by the outdoor temperature and solar radiation factors, the method of controlling the variable new air volume in the cooling mode of the device using feedforward proportional integration specifically includes the following steps. ..

In step 1, first, the controller has a temperature threshold T _{c that activates the temperature decrease in the room, a humidity threshold H w} that activates the humidity increase, a threshold b that the wind blower activates the temperature decrease, and a wet curtain water supply electromagnetic valve. The threshold value d for opening the valve, the humidity decrease threshold h _{1 for} opening the wet curtain water supply electromagnetic valve, and the humidity increase threshold h _{2 for} opening the wet curtain water supply electromagnetic valve are set, and the controller sets the outdoor air temperature sensor and the outdoor temperature sensor. Receives information transmitted from the humidity sensor, radiation intensity sensor, indoor air temperature sensor, and indoor humidity sensor in real time.

ただし、T_sは設定された標準温度であり、T_oは室外温度の室内温度への影響値であり、T_rは太陽放射強度の室内温度への影響値であり、T_qは温室内の所望気温であり、k₁は室外温度の室内温度への影響値を計算するための影響係数であり、k₂は太陽放射強度の室内温度への影響値を計算するための影響係数であり、tは現在の室外温度であり、t₀は指定された室外温度の参考値であり、rは現在の室外放射強度であり、r₀は指定された室外放射強度の参考値である。 In step 2, the outdoor air temperature sensor and the indoor air temperature sensor transmit the detected temperature signal, the radiation intensity sensor transmits the detected indoor solar radiation value to the controller, and the controller transmits the received outdoor temperature and radiation. Based on the effect value of the intensity on the indoor temperature, the desired indoor air temperature T _q is calculated by the following formula.

However, T _s is the standard temperature set, T _o is the impact value of the indoor temperature of the outdoor temperature, T _r is the impact value of the room temperature of the solar radiation intensity, T _q is in the greenhouse It is the desired temperature, k ₁ is the influence coefficient for calculating the influence value of the outdoor temperature on the indoor temperature, and k ₂ is the influence coefficient for calculating the influence value of the solar radiation intensity on the indoor temperature. t is the current outdoor temperature, t ₀ is the reference value for the specified outdoor temperature, r is the current outdoor radiation intensity, and r ₀ is the reference value for the specified outdoor radiation intensity.

ただし、P_fは風機の起動又は停止状態であり、1は起動であり、0は停止であり、T_qは室内の所望気温であり、T_iは室内気温センサが検出した実際の温度値であり、T_cは室内において降温を起動する閾値温度であり、H_iは室内湿度センサが検出した湿度値であり、H_oは室外湿度センサが検出した湿度値であり、H_wは温室内において湿度増加を起動する湿度閾値であり、bは風機が降温を起動する閾値であり、dはウエットカーテン給水電磁弁が開弁する閾値であり、h₂はウエットカーテン給水電磁弁が開弁する湿度増加閾値である。 A step 3, the controller is obtained by calculating the desired air temperature T _q of the room, if desired temperature T _q of the room is higher than the threshold temperature T _c starting the cooling in the indoor, humidified and cooled blower wet curtain device Enters the temperature lowering mode, and when the desired indoor air temperature T _{q is lower than the threshold temperature T c} that initiates the temperature lowering in the room, the humidifying / lowering air blower wet curtain device enters the humidifying mode. The controller calculates the start and stop of the wind blower in different modes of the device, the new air volume of the outdoor intake, the opening or closing of the wet curtain water supply solenoid valve, and the opening or closing of the ceiling window exhaust based on the indoor weather factors. The start or stop state of the wind blower is calculated according to the following equation.

However, P _f is the start or stop state of the wind blower, 1 is the start, 0 is the stop, T _q is the desired indoor temperature, and T _i is the actual temperature value detected by the room temperature sensor. There, T _c is the threshold temperature for starting the cooling in the indoor, H _i is the humidity value room humidity sensor detects, H _o is the humidity value outdoor humidity sensor detects, H _w in greenhouse Humidity threshold that activates humidity increase, b is the threshold that the wind blower activates temperature decrease, d is the threshold that the wet curtain water supply electromagnetic valve opens, and h ₂ is the humidity that the wet curtain water supply electromagnetic valve opens. The increase threshold.

In step 4, the controller controls the amount of new air entering the greenhouse by controlling the angle between the intake port side window baffle and the intake port elevation by operating the angle sensor and the intake port side window motor. .. The calculation of the new air volume at the outdoor air intake is as follows. That is, the difference between the air temperature t ₂ (n) actually measured in the room and the indoor air temperature t ₂ (n-1) _{5 minutes ago | t 2} (n-1) −t ₂ (n) | Measure the speed of change.

ただし、Qは設定される標準新風量であり、t₁(n＋2)は１０分後の室内の所望気温であり、k_pは比例係数であり、Q_oは室外温度の新風量の計算への影響値であり、Q_rは太陽放射照度の新風量の計算への影響値であり、k_oは室外温度の新風量の計算への影響係数であり、k_rは太陽放射照度の新風量の計算への影響係数である。 When the threshold value δ is set and | t ₂ (n-1) −t ₂ (n) | ≧ δ, the new air volume Q (n + 1) for 5 minutes is calculated using the proportional adjustment method, and the following equation is used. Obtained like this.

However, Q is the standard new _{air volume to be set, t 1} (n + 2) is the desired indoor temperature after 10 minutes, k _p is a proportional coefficient, and Q _o is the calculation of the new air volume for the outdoor temperature. The influence value, Q _r is the influence value on the calculation of the new air volume of the solar irradiance, k _o is the influence coefficient on the calculation of the new air volume of the outdoor temperature, and k _r is the influence value of the new air volume of the solar irradiance. It is a coefficient of influence on the calculation.

ただし、δ_iは正値積分係数であり、t(n)は設定された室内気温の降温温度であり、δ₁は設定された別の閾値である。 When | t ₂ (n-1) −t ₂ (n) | <δ and | t ₂ (n) −t ₁ (n + 2) |> δ ₁ and the steady-state error is eliminated by integration, The new air volume Q (n + 1) for the next 5 minutes is as follows.

However, δ _i is the positive integration factor, t (n) is the set indoor air temperature drop temperature, and δ ₁ is another set threshold.

ただし、P_cはウエットカーテン給水電磁弁の開弁又は閉弁の状態であり、1は開弁を示し、0は閉弁を示し、H_iは室内湿度センサが検出した実際の湿度値であり、H_oは室外湿度センサが検出した湿度値であり、T_iは、室内気温センサが検出した実際の温度値であり、T_cは室内において降温を起動する温度閾値であり、dはウエットカーテン給水電磁弁が開弁する温度閾値であり、H_wは温室内において湿度増加を起動する湿度閾値であり、h₁はウエットカーテン給水電磁弁が開弁する降温湿度閾値であり、h₂はウエットカーテン給水電磁弁が開弁する湿度増加閾値である。 In step 5, the outdoor humidity sensor, the indoor humidity sensor, and the indoor temperature sensor detect a signal every 5 minutes and transmit the detected signal to the controller. The controller controls the opening and closing of the wet curtain water supply solenoid valve based on the detected signal, and calculates as follows.

However, P _c is the open or closed state of the wet curtain water supply electromagnetic valve, 1 indicates the valve open, 0 indicates the valve closed, and H _i is the actual humidity value detected by the indoor humidity sensor. , H _o is the humidity value detected the outdoor humidity sensor, T _i is the actual temperature value room temperature sensor detects, T _c is the temperature threshold to start the cooling in a room, d is the wet curtain _{H w} is the temperature threshold at which the water supply electromagnetic valve opens, H w is the humidity threshold at which the humidity increase is activated in the greenhouse, h ₁ is the temperature / humidity threshold at which the wet curtain water supply electromagnetic valve opens, and h ₂ is the wet humidity threshold. This is the humidity increase threshold at which the curtain water supply electromagnetic valve opens.

From step 1 to step 5, the controller controls the start or stop of the wind blower, the opening and closing of the wet curtain water supply electromagnetic valve, the opening and closing of the ceiling window in the device, and based on the new air volume of the outdoor intake port. By adjusting the opening angle of the window baffle on the intake port side, the temperature and humidity in the greenhouse are adjusted so that the indoor temperature and humidity meet the required requirements.

1 Ceiling window motor 2 Radiation sensor 3 Temperature sensor 4 Humidity sensor 5 Outdoor intake port 6 Outdoor intake port insect repellent net 7 Push rod rack 8 Angle sensor 9 Intake port side window baffle 10 Wet curtain 11 Wet curtain Water supply electromagnetic valve 12 Intake port side window Motor 13 Winder 14 Indoor air intake 15 Glass baffle 16 Housing 17 Exhaust port 18 Ventilation duct 19 Indoor temperature sensor 20 Indoor humidity sensor 23 Ceiling window exhaust port 24 Ceiling window exhaust port Insect-proof net.

Claims (7)

A humidifying / lowering air blower wet curtain device for lowering the temperature of a greenhouse and increasing the humidity. It is a ceiling window motor (1), a radiation sensor (2), a temperature sensor (3), and a humidity sensor (4). ), The side window baffle drive mechanism, the angle sensor (8) that detects the opening degree of the intake port side window baffle, the intake port side window baffle (9), the wet curtain (10), and the wet curtain water supply electromagnetic valve. (11), wind blower (13), glass baffle (15), housing (16), exhaust port (17), ventilation duct (18), indoor temperature sensor (19), indoor humidity sensor (11) 20) and a ceiling window exhaust port (23), etc.
An outdoor air intake (5) is opened on one side wall of the greenhouse, and a window baffle (9) on the air intake side is hinged to the outdoor air intake (5) to open the window baffle (9) on the air intake side. The degree is controlled by the side window baffle drive mechanism,
The wet curtain (10) and the wind blower (13) are connected by a housing (16) and attached to both sides of the housing (16), respectively, and the wet curtain (10) is discharged by a wet curtain water supply solenoid valve (11). Controlled
A glass baffle (15) is provided above the housing (11) located on the wet curtain (10) side, and the glass baffle (15) and the side wall on the side having the outdoor air intake (5) of the greenhouse form a greenhouse. Forming the indoor air intake (14),
The air blower (13) communicates with the ventilation duct (18), and the ventilation duct (18) is provided with an exhaust port (17).
The radiation sensor (2), the temperature sensor (3), and the humidity sensor (4) are provided outside the greenhouse, and the indoor temperature sensor (19) and the indoor humidity sensor (20) are provided inside the greenhouse. Ori,
A plurality of ceiling windows are opened at the top of the greenhouse, and a ceiling window motor (1) is attached to the ceiling windows.
The ceiling window motor (1), radiation sensor (2), temperature sensor (3), humidity sensor (4), angle sensor (8), wet curtain water supply electromagnetic valve (11), intake port side window motor (12), The wind blower (13), the indoor temperature sensor (19), and the indoor humidity sensor (20) are all connected to the controller .
The side window baffle drive mechanism includes an arc-shaped push rod rack (7) and an intake port side window motor (12), and the intake port side window motor (12) is a greenhouse in an outdoor intake port (5). A gear is attached to the output shaft of the intake port side window motor (12) attached to the outside of the side wall, and one end of the arc-shaped push rod rack (7) is fixed to the intake port side window baffle (9). A humidifying / lowering air blower wet curtain device , wherein the gear and the arc-shaped push rod rack (7) are engaged and transmitted. The humidifying / lowering air blower wet according to claim 1 , wherein the radiation sensor (2), the temperature sensor (3), and the humidity sensor (4) are provided above the outdoor intake port (5). Curtain device. The humidifying / lowering air blower wet curtain device according to claim 2 , wherein the indoor temperature sensor (19) and the indoor humidity sensor (20) are provided in the center of the greenhouse. The humidifying / lowering air blower wet curtain device according to claim 3 , wherein the angle sensor (8) is provided between the greenhouse side wall and the intake port side window baffle (9). The humidifying / lowering air blower wet curtain device according to claim 4 , wherein the outdoor intake port (5) is provided with an intake port insect repellent net (6). The humidifying / lowering air blower wet curtain device according to claim 5 , wherein the ceiling window exhaust port (23) is provided with a ceiling window exhaust port insect repellent net (24). The method for controlling a humidifying / lowering air blower wet curtain device according to any one of claims 1 to 6.
In step 1, first, the controller has a temperature threshold T _{c that activates the temperature decrease in the room, a humidity threshold H w} that activates the humidity increase, a threshold b that the wind blower activates the temperature decrease, and a wet curtain water supply electromagnetic valve. The threshold value d for opening the valve, the humidity decrease threshold h _{1 for} opening the wet curtain water supply electromagnetic valve, and the humidity increase threshold h _{2 for} opening the wet curtain water supply electromagnetic valve are set, and the controller is an outdoor air temperature sensor. Step 1 of receiving information transmitted from the outdoor humidity sensor, radiation intensity sensor, indoor air temperature sensor, and indoor humidity sensor in real time, and
In step 2, the outdoor air temperature sensor and the indoor air temperature sensor detect the temperature signal, and the radiation intensity sensor transmits the detected indoor solar radiation value to the controller, and the controller receives the received outdoor temperature and radiation intensity. Calculate _{the desired indoor air temperature T q} by the following formula based on the effect value on the indoor temperature.

However, T _q is the desired temperature of the room, T _s is the standard temperature set, T _o is the impact value of the indoor temperature of the outdoor temperature, T _r is the influence of the room temperature of the solar radiation intensity It is a value, k ₁ is an influence coefficient for calculating the influence value of the outdoor temperature on the indoor temperature, t is the current outdoor temperature, t ₀ is a reference value of the specified outdoor temperature, and k ₂ Is the influence coefficient for calculating the effect value of the solar radiation intensity on the indoor temperature, r is the current outdoor radiation intensity, and r ₀ is the reference value of the specified outdoor radiation intensity in step 2 and
A step 3, the controller is obtained by calculating the desired air temperature T _q of the room, if desired temperature T _q of the room is higher than the threshold temperature T _c starting the cooling in the indoor, humidified and cooled blower wet curtain device Enters the cooling mode, and when the desired indoor air temperature T _{q is lower than the threshold temperature T c} that activates the indoor temperature, the humidification / cooling air blower wet curtain device enters the humidification mode, and the controller is based on the indoor weather factor. Start and stop of the wind blower in different modes, new air temperature of the outdoor intake port, opening or closing of the wet curtain water supply electromagnetic valve, opening or closing of the ceiling window exhaust port are calculated and controlled, and the start or stop of the wind blower The state is calculated as

However, P _f is the start or stop state of the wind blower, 1 is the start, 0 is the stop, T _c is the threshold temperature at which the temperature drop is started indoors, and b is the threshold temperature at which the wind blower starts the temperature drop. Yes, H _w is the humidity threshold that activates the humidity increase in the greenhouse, H _i is the humidity value detected by the indoor humidity sensor, and h ₂ is the humidity increase threshold that the wet curtain water supply electromagnetic valve opens. T _i is the actual temperature value detected by the indoor air temperature sensor, and d is the threshold value at which the wet curtain water supply electromagnetic valve opens.
In step 4, the controller controls the amount of new air entering the greenhouse by controlling the angle between the intake port side window baffle and the intake port elevation by operating the angle sensor and the intake port side window motor. However, in the calculation of the new air volume at the outdoor air intake _{, the difference between the temperature t 2} (n) actually measured indoors and the indoor temperature t ₂ (n-1) _{5 minutes ago | t 2} (n-1) Measure the speed of change in indoor temperature with −t _{2 (n) ｜}
When the threshold value δ is set and | t ₂ (n-1) −t ₂ (n) | ≧ δ, the new air volume Q (n + 1) for 5 minutes is calculated using the proportional adjustment method, and the following equation is used. Obtained like

However, Q is the standard new _{air volume to be set, t 1} (n + 2) is the desired indoor temperature after 10 minutes, k _p is a proportional coefficient, and Q _o is the calculation of the new air volume for the outdoor temperature. The influence value, Q _r is the influence value on the calculation of the new air volume of the solar irradiance, k _o is the influence coefficient on the calculation of the new air volume of the outdoor temperature, and k _r is the influence value of the new air volume of the solar irradiance. It is a coefficient of influence on the calculation.
When | t ₂ (n-1) −t ₂ (n) | <δ and | t ₂ (n) −t ₁ (n + 2) |> δ ₁ and the steady-state error is eliminated by integration, The new air volume Q (n + 1) for the next 5 minutes is as shown in the following equation.

However, δ _i is the positive integration coefficient, t (n) is the set indoor air temperature decrease temperature, and δ ₁ is another set threshold in step 4 and
In step 5, the outdoor humidity sensor, the indoor humidity sensor, and the indoor temperature sensor detect signals every 5 minutes and transmit the detected signals to the controller, and the controller supplies wet curtain water based on the detected signals. Control the opening and closing of the solenoid valve, calculate as follows,

However, P _c is the state of opening or closing of the wet curtain water supply electromagnetic valve, 1 denotes a valve opening, 0 indicates the closing, H _i is the actual humidity value room humidity sensor has detected , H _o is the humidity value detected the outdoor humidity sensor, T _i is the actual temperature value room temperature sensor detects, T _c is the temperature threshold to start the cooling in a room to be set, d is The temperature threshold at which the wet curtain water supply electromagnetic valve opens, H _w is the humidity threshold at which the humidity increase is activated in the greenhouse, and h ₁ is the temperature / humidity threshold at which the wet curtain water supply electromagnetic valve opens. ₂ includes step 5 which is the humidity increase threshold at which the wet curtain water supply electromagnetic valve opens.
In steps 1 to 5, the controller controls the start or stop of the wind blower, the opening and closing of the wet curtain water supply electromagnetic valve, the opening and closing of the ceiling window in the device, and based on the new air volume of the outdoor intake port. By adjusting the opening angle of the window baffle on the intake port side, the temperature and humidity inside the greenhouse can be adjusted to meet the required requirements for indoor temperature and humidity. How to control the device.

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