JP2019010010A - Control device for ventilation system of poultry house - Google Patents

Abstract

To provide a control device that enables efficient and energy-saving operation in a poultry house with a heat exchanger installed in it.SOLUTION: Provided is a control device 30 for a ventilation system of a poultry house 1 comprising: a building structure composed of a floor surface 2, side walls 3, 3b, gable walls 4a, 4b, and a roof 5; a plurality of heaters 10 arranged in a longitudinal direction between the side walls 3, 3b; ventilators 12 with a door disposed on one gable wall 4a of the gable walls 4a, 4b; shutters 13, 13a disposed on the other gable wall 4b or the side walls 3a, 3b near the garble wall 4b; heat exchangers 14 provided on the side wall 3b; an environment meter 20 disposed in the building structure; and an outdoor air thermometer 16a disposed outside the building structure. The control device 30 for the ventilation system of the poultry house is connected at least to the environment meter 20 and the outdoor air thermometer 16a to control the operation of the heat exchangers 14 and the ventilators 12 with a door. The control device 30 operates the ventilators 12 with a door in a case where an amount of ventilation by the heat exchangers 14 does not reach a prescribed amount determined on the basis of a value from the environment meter 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation system for a poultry house for breeding broilers.

  In broilers, the environmental conditions, especially during the younger days, determine the size of the final growth. Therefore, it is necessary to manage the environment such as the temperature inside the poultry house according to the number of breeding days. For example, when the temperature outside the poultry house is lower than the temperature required for the broiler of the day, the temperature inside the poultry house must be maintained at a predetermined temperature by a heater such as a gas broiler.

  On the other hand, even in the cold season when the outside air temperature is low, in order to improve the air quality in the poultry house, it is necessary to ventilate with the minimum air volume according to the age. Here, the air quality refers to the concentration of each component in the air such as oxygen concentration, carbon dioxide concentration, carbon monoxide concentration, ammonia concentration, dust concentration in the air.

  The ventilation of the poultry house includes natural ventilation and forced ventilation according to the structure of the poultry house, and the poultry house targeted by the present invention is a windless poultry house, and conventionally, forced ventilation using a ventilation fan has been performed.

  Conventional ventilation of a windless poultry house introduces outside air from an air inlet and exhausts the air in the house by a ventilation fan. Therefore, temperature management and ventilation management in the poultry house were performed by operating / stopping the heater and operating / stopping the ventilation fan. In the following, the Windless house will be abbreviated as a house.

  That is, outside air is introduced into the poultry house for ventilation even when the outside air temperature in the cold season is low. However, the temperature inside the poultry house rapidly decreases due to the introduction of cold outside air. Therefore, the ventilation amount is reduced. This causes the air quality in the poultry house to deteriorate.

  On the other hand, in order to prevent the temperature inside the poultry house from dropping even when cold outside air is introduced, the number of brooders must be increased. This is not preferable because initial investment and fuel costs such as gas become high.

  In view of such circumstances, a method has been proposed in which cold outside air is not introduced into the poultry house as it is. As an example, Patent Document 1 discloses a barn equipped with a heat exchanger.

  In Patent Document 2, a plurality of chicken rooms separated by partition walls are extended in the longitudinal direction of the poultry house, and a large-diameter fan, medium-diameter fan, and small-diameter fan are provided at positions corresponding to the respective chicken farms. An arranged windless poultry house structure is disclosed.

Japanese Utility Model Publication No. 61-004166 JP 08-009820 A (Patent No. 2535137)

  Patent Document 1 discloses a barn equipped with a heat exchanger. The heat exchanger exchanges air having heat generated by the carbon dioxide generated by the broiler in the barn or body temperature with air introduced from outside the barn, and raises the temperature of the cold outside air and introduces it into the barn. In this way, cold outside air is directly introduced into the barn and the temperature inside the barn is prevented from rapidly decreasing.

  However, as already mentioned, broilers require fine temperature control and ventilation control in the poultry house according to the number of days of breeding, and it is difficult to achieve both energy saving and heat control by simply installing a heat exchanger. And a heat exchanger control method that performs ventilation management with energy saving has not been devised.

  In particular, since heat exchangers are relatively expensive, the initial investment is smaller when the number of installed units is as small as possible. On the other hand, even if a heat exchanger is arranged to obtain a ventilation rate that can be assumed with a safety factor, environmental waste gases such as carbon dioxide, carbon monoxide, ammonia, and dust exceeding the ventilation capacity are generated in extremely rare situations. There is a risk.

  A control device for a ventilation system of a poultry house according to the present invention has been conceived in view of the above-described problems, and provides a control device for efficiently operating a ventilation system in a poultry house having a heat exchanger. It is.

More specifically, the control device for the ventilation system of the poultry house according to the present invention,
A rectangular floor;
A side wall provided on the long side of the rectangle;
A wife wall provided on the short side of the rectangle;
A building composed of a roof covering the floor;
A plurality of heaters arranged in a longitudinal direction between the side walls;
Among the wife walls, a ventilating fan with a door disposed on one of the wife walls,
Among the wife walls, the other wife wall or a shutter disposed on the side wall close to the wife wall,
A heat exchanger provided on the side wall;
An environmental meter disposed in the building;
A control device for a ventilation system of a poultry house provided with an outside air thermometer arranged outside the building,
Connected to at least the environmental meter and the outside air thermometer,
Control the operation of the heat exchanger and the ventilator with door,
When the ventilation amount by the heat exchanger does not reach a predetermined amount determined based on a value from the environmental measurement meter, the door-mounted ventilation fan is operated.

  Even if the control device of the ventilation system of the poultry house according to the present invention uses a heat exchanger distributed in the poultry house, if it is judged that the ventilation amount is insufficient, the ventilation fan is used for ventilation. It is possible to prevent waste gas and the like from staying in the poultry house. As a result, it is possible to achieve efficient growth of broilers while achieving both energy conservation and good heat and air quality in the poultry house.

It is the external appearance and top view of a chicken house in which the control apparatus of the ventilation system which concerns on this invention was integrated. It is a figure which shows the structure of a heat exchanger. It is a figure which shows the structure of a control apparatus. It is a processing flow of the control device. It is a graph which shows the temperature change in the poultry house when temperature management is performed. It is a detailed flow of the process which operates a heat exchanger. It is a figure which shows the example in the case of ventilating for every breeding zone.

  Below, the control apparatus of the ventilation system of the poultry house which concerns on this invention is demonstrated, referring a figure. In addition, the following description illustrates one Embodiment of the control apparatus of the ventilation system of the poultry house which concerns on this invention, and this invention is not limited to the following description. The following embodiments can be modified without departing from the spirit of the present invention.

  FIG. 1 shows a perspective view (FIG. 1 (a)) and a plan view (FIG. 1 (b)) of a poultry house having a control device 30 for the ventilation system of the poultry house according to the present invention. The poultry house 1 in which the poultry house ventilation system control device 30 according to the present invention is introduced includes a rectangular floor surface 2, side walls 3a and 3b provided along the long side, and a wife wall provided along the short side. 4 a, 4 b and a roof 5. This is for tunnel-type ventilation as will be described later. Therefore, even if the floor surface 2 is square, if the interior is partitioned into strips and divided into rectangular sections, it can be said that the chicken house 1 is intended for the control device 30 of the ventilation system according to the present invention.

  In the side walls 3a and 3b, the inside of the poultry house 1 is referred to as inner side walls 3ai and 3bi, and the outside of the poultry house 1 is referred to as outer walls 3ao and 3bo. In FIG. 1B, only the inner wall 3ai and the outer wall 3ao are shown. Further, the floor surface 2 can be divided into a plurality of breeding zones Bz. Usually, since the area to be raised in the poultry house 1 is expanded according to the age, it is preferable that the area can be divided into a plurality of breeding zones Bz. FIG. 1B shows a case where there are four breeding zones Bz.

  In the poultry house 1, a heater 10 (also referred to as “broider”) is installed along the center line 2 a of the floor 2. The heater 10 may be placed directly on the floor 2 or may be suspended at a certain height from the ceiling. The interval 10a between the heaters 10 is approximately equal. This is because the heater 10 is placed in order to keep the temperature inside the poultry house 1 constant, and it is desirable that the temperature at an arbitrary position on the floor 2 be constant. The floor 2, the side walls 3a and 3b, the end walls 4a and 4b, and the roof 5 are referred to as a building.

  Therefore, it is desirable that the distance 3L between the side walls 3a and 3b be set at a distance that allows the effect of the heater 10 to reach the wall when the heater 10 is placed at the center.

  On one end wall 4a, a ventilating fan 12 with a door is provided. The other end wall 4b is provided with a shutter 13 that can be opened and closed. In FIG. 1, four rows of upper and lower two-stage ventilating fans 12 are arranged on the end wall 4a, and a shutter 13 of the same size is disposed on the end wall 4b at a position facing the ventilating fan 12 with the door. It shows a state. The shutter 13 may be provided on the side walls 3a and 3b close to the end wall 4b. In FIG. 1, the shutter 13a is shown on the side wall 3a side, but it is also provided on the side wall 3b.

  Heat exchangers 14 are provided opposite to the opposing side walls 3a and 3b, respectively. In FIG. 1B, 16 heat exchangers 14 are arranged on the side walls 3a and 3b, respectively. In FIG. 1A, only one heat exchanger 14 is shown. Further, a side wall inlet 40 is provided on the upper side of the side walls 3 a and 3 b, and a ceiling inlet 42 is disposed on the roof 5. These inlets can be opened and closed, and either one or both of them may be provided. Since these inlets hardly generate wind in the breeding area (height direction) of the poultry house 1, they can be used as an effective ventilation means when the chicks are young.

  FIG. 2 shows a simple configuration of the heat exchanger 14. In the following description, the side wall 3a side is described. However, the side wall 3b side is the same. The heat exchanger 14 includes a heat exchange element 14 a, an exhaust system air passage 14 o that exhausts air inside the poultry house 1 to the outside of the poultry house 1, and an air supply system air path 14 i that takes air outside the poultry house 1 into the poultry house 1. Consists of.

  The heat exchanging element 14a brings the air flow path 14o of the exhaust system and the air path 14i of the air supply system close to each other to give the heat amount of the air of the exhaust system to the air of the air supply system (sensible heat exchange), or the humidity of the exhaust system It may be of the type (total heat exchange) given to the air in the supply system.

  Most preferably, the heat exchanger 14 incorporates both a sensible heat exchange element and a total heat exchange element as the heat exchange element 14a and can be switched by an instruction from the outside. In addition, the case where it operates with a sensible heat exchange element is called sensible heat operation, and the case where it operates with a total heat exchange element is called total heat operation.

  The exhaust system of the heat exchanger 14 is provided with an inside air suction port 14oi that takes in air inside the poultry house 1 below the inner wall 3ai. The inside air suction port 14oi is set to be higher than the floor surface 2 by a predetermined height 3h. This is to prevent the young chicks from hitting the air flow flowing toward the inside air suction port 14oi as much as possible. Chickens do not grow significantly after 40 to 50 days when exposed to cold air when they are young. Further, an inside air discharge port 14oo that is an outlet of air in the exhaust system is provided in the lower part of the heat exchanger 14.

  A fan 14of is provided in the middle of the exhaust system air passage 14o to generate an air flow from the inside of the poultry house 1 to the outside of the poultry house 1. In the exhaust system, air reaches the heat exchange element 14a from the inside air suction port 14oi through the air passage 14o of the exhaust system, is sent out from the heat exchange element 14a to the inside air discharge port 14oo, and is discharged outside the poultry house 1.

  In the air supply system of the heat exchanger 14, an outside air suction port 14 ii for taking in air outside the poultry house 1 is provided at the top of the heat exchanger 14. An outside air outlet 14io, which is an outside air outlet, is provided above the inner wall 3ai. A fan 14if is also provided in the air passage 14i of the air supply system, and generates an air flow from the outside of the chicken house 1 to the inside of the chicken house 1. In the air supply system, air reaches the heat exchange element 14 a from the outside air suction port 14 ii, is sent out from there to the outside air outlet 14 io in the poultry house 1, and is released into the poultry house 1.

  Referring to FIG. 1 (b) again, it is desirable that a plurality of heat exchangers 14 be provided on each of the side walls 3a and 3b of the poultry house 1. This is because the range that can be covered by one heat exchanger 14 is not so wide, and if there are many heat exchangers 14, it is easy to set the interior of the poultry house 1 in a uniform environment.

  The wife wall 4a is provided with a door-mounted ventilation fan 12 (hereinafter also simply referred to as “ventilation fan 12”), and the wife wall 4b is provided with a shutter 13. Ventilation fan 12 with a door ventilates so that air in poultry house 1 may be discharged outside. Moreover, the wind guide fan 12a (refer FIG. 1 (a)) which sends air from the wife wall 4b to the wife wall 4a may be provided.

  The poultry house 1 is further provided with several sensors. First, an outside air thermometer 16a and an outside air hygrometer 16b are provided outside the poultry house 1. The poultry house 1 is provided with an in-house thermometer 18a, an in-house hygrometer 18b, and an environmental meter 20 capable of measuring carbon dioxide, carbon monoxide, ammonia, and the amount of dust.

  Although the environmental meter 20 is shown as one in FIG. 1 (b), it is assumed that there are separate measuring devices such as a carbon dioxide meter 20a, a carbon monoxide meter 20b, an ammonia meter 20c, and a dust meter 20d. Further, the measurement values obtained from the environmental meter 20 are collectively referred to as an environmental index Ev. Therefore, the environmental meter 20 may be called an environmental index measuring device.

  The chicken house 1 may be provided with a camera 22 (see FIG. 1A). The floor surface 2 of the poultry house 1 is divided into a plurality of breeding zones Bz. The number of cameras 22 is set such that at least all the breeding zones Bz can determine whether or not there is a broiler.

  In order to control the ventilation system of the poultry house 1, the poultry house 1 is provided with a control device 30. The control device 30 determines the operation of the ventilating fan 12 with door, the shutter 13, the side wall inlet 40, the ceiling inlet 42, and the heat exchanger 14 based on the outside air and the temperature and humidity in the building. You may control the operation | movement of the camera 22 and the wind guide fan 12a.

  FIG. 3 shows the configuration of the control device 30. The control device 30 operates with an MPU (Micro Processor Unit), a memory 30m, and a control program. The control device 30 is connected to an input device 31 for giving an instruction from the outside and a display device 32 capable of displaying the state in the poultry house 1.

  The control device 30 receives signals Rq from the outside air thermometer 16a, the outside air hygrometer 16b, the building thermometer 18a, the building hygrometer 18b, the environment measuring meter 20, and the input device 31. Further, the control device 30 is connected to the heater 10, the door-mounted ventilation fan 12, the shutter 13, the side wall inlet 40, the ceiling inlet 42, each heat exchanger 14, and the display device 32. Then, instruction signals (C10, C12, C13, C14, and C32, respectively) can be output to these devices to control the operation. In addition, about the heater 10, the ventilation fan 12 with a door, the shutter 13, the side wall inlet 40, the ceiling inlet 42, and each heat exchanger 14, when there are two or more, an instruction | indication signal can be output with respect to each apparatus. . That is, each device can be controlled independently.

  Further, in the control device 30, a timer 30T, a management temperature determination unit 30A, a management ventilation amount determination unit 30B, a breeding zone determination unit 30C, a heat exchanger control unit 30D, an age determination unit 30E, and an outside air temperature detection unit 30F Is provided. These may be provided with a dedicated circuit in the control device 30, but may be realized as software as a control program.

  Operation | movement is demonstrated, showing a flow about the control apparatus 30 of the ventilation system of the poultry house 1 which has the above structure. FIG. 4 is a part of the control flow of the ventilation system of the control device 30. The control device 30 may perform more control than shown here.

  When the process starts (step S100), initialization is performed (step S102). Initial settings include management temperature Tc, management humidity Hc, minimum temperature management width ΔT1, upper limit temperature management width ΔT2, minimum ventilation volume Ae, correction value Ad based on environmental index Ev, breeding zone Bz, etc. Entered. As will be described later, the correction value Ad is a value that is considered when determining the number of operating heat exchangers 14. Further, the lower limit temperature management width ΔT1 and the upper limit temperature management width ΔT2 are also a margin for temperature management, as will be described later. These values are changed according to the age of the broiler. Therefore, an equation for obtaining a value corresponding to the age and a table of each variable for each age are input in advance at the time of initial setting.

  Thereafter, when a broiler chick is accepted (Y branch in step S104), management is started. The breeding zone Bz described in the initial setting may be input at this time. The control device 30 starts an internal timer 30T (step S106). Or record the date and time of receipt. Thereafter, the current age is obtained by the age determination unit 30E based on the value of the timer 30T or the elapsed time from the date of acceptance. That is, the age determination unit 30E returns the current age Rd when requested. Here, the age of the day of acceptance (“current age Rd” at this stage) is recorded in the management age Md.

  Next, management parameters Mp such as a management temperature Tc, a management humidity Hc, a lower limit temperature management width ΔT1, an upper limit temperature management width ΔT2, and a minimum ventilation volume Ae are determined based on the management age Md (step S108). The management temperature Tc, the management humidity Hc, the lower limit temperature management width ΔT1, and the upper limit temperature management width ΔT2 are determined by the management temperature determination unit 30A based on the management date Md. The correction value Ad based on the minimum ventilation volume Ae and the environmental index Ev is determined by the management ventilation volume determination unit 30B based on the management day age Md. The correction value Ad may take into account the breeding zone Bz. Thereafter, if this routine is passed, the management parameter Mp is updated according to the management day age Md at that time.

  Next, the temperature obtained by subtracting the lower limit temperature management width ΔT1 ° C. from the management temperature Tc determined on the basis of the outside temperature To and the management date Md obtained by the outside temperature detector 30F by the outside temperature thermometer 16a is compared (step S110). . If the outside air temperature To is low (Y branch of step S110), the heat exchanger 14 is started (step S112). That is, when the outside air temperature To falls below the lower limit temperature management width ΔT1 ° C. from the management temperature Tc, sufficiently cool air is taken in from the building, so the heat exchanger 14 is started and efforts are made to maintain the amount of heat. In addition, when starting the heat exchanger 14, the driving | operation of the ventilation fan 12 with a door is stopped (step S112). If the heat exchanger 14 is already operating, the process proceeds to step S118 without doing anything.

  On the other hand, when the outside air temperature To is higher than the temperature obtained by subtracting the lower limit temperature management width ΔT1 ° C. from the management temperature Tc (N branch in step S110), the value obtained by adding the upper limit temperature management width ΔT2 ° C. to the management temperature Tc and the outside air temperature To. Are compared (step S114). If the outside air temperature To is higher than the temperature obtained by adding the upper limit temperature management width ΔT2 ° C. to the management temperature Tc (Y branch in step S114), the heat exchanger 14 is stopped and the door-mounted ventilation fan 12 is started (step S116). ).

  In this case, since the cold air is not taken in from the outside from the outside, the heat exchanger 14 is stopped. If the heat exchanger 14 has already stopped, the process proceeds to the next flow without doing anything. If the determination in step S114 is No, the process proceeds to step S118 without doing anything. In step S110 and step S114, the inequality sign does not include a case where the values are equal to each other, but may be included. That is, the inequality sign in both steps may be “<” or “≦”.

  Next, it is determined whether or not the management parameter Mp needs to be changed (step S118). This determination is made based on whether or not the age has advanced. This is because the ventilation system operates according to the age. Specifically, if the management age Md and the current age Rd calculated by the age determination unit 30E are different (N branch in step S118), it is determined that the management parameter Mp needs to be changed.

  If it is determined that a change is necessary, the management age Md is incremented (step S120), and the process proceeds to step S108. If it is not necessary to change the management parameter Mp (Y branch in step S118), an end determination (step S122) is performed. The end determination may be made based on whether or not the current age Rd is the planned shipping age RE.

  When the process is to be ended (Y branch in step S122), an end process is performed (step S124) and the process is stopped (step S126). If the process does not end (N branch in step S122), the process proceeds to step S110.

  FIG. 5 shows an operation image of the heat exchanger 14 controlled by the above flow. First, reference is made to FIG. FIG. 5 (a) shows the operation of the heat exchanger 14 within a day. The horizontal axis is time, and the vertical axis is temperature. Even during the day, the outside air temperature To decreases from midnight to dawn. When the sun rises, the outside air temperature To rises, and the outside air temperature To falls again from noon to evening. This is shown by the curve of the outside air temperature To.

  Assume that the management temperature Tc determined by the age Md at this time is determined as shown in FIG. 5A with respect to such a change in the outside air temperature To. Basically, the heat exchanger 14 is operated when the outside air temperature To is lower than the management temperature Tc, and is stopped when the outside air temperature To is higher than the management temperature Tc. Then, the control device 30 of the present invention starts to operate when the outside air temperature To becomes lower than the management temperature Tc by the lower limit temperature management width ΔT1 ° C. or more. In FIG. 5A, the point “START14” is the operation start point of the heat exchanger 14.

  The operation is stopped when the outside air temperature To becomes higher than the management temperature Tc by the upper limit temperature management width ΔT2 ° C. or more. In FIG. 5A, the point of “STOP 14” is the operation stop point of the heat exchanger 14. By performing such management, it becomes possible to give a sufficient amount of heat to the broiler during cold hours of the day, and to suppress wasteful operation / stop hunting of the heat exchanger 14.

  FIG. 5B is an explanatory diagram when the time axis is made longer. The horizontal axis is the number of breeding days, and the vertical axis is the temperature. The management temperature Tc is determined based on the broiler age Md, and the management temperature Tc decreases as the age Md advances. For example, the management temperature Tc of chicks up to 7 days of age is required to be about 30 ° C., but the management temperature Tc of adult birds that have passed 35 days of age and have molted may be 16 to 18 ° C.

  In FIG.5 (b), it turns out that management temperature Tc is falling with the number of breeding days (day age). On the other hand, it is assumed that the outside air temperature To is moving from a low temperature to a high temperature as shown in FIG. Of course, the outside air temperature To varies depending on the season in which the poultry house 1 is set up.

  Here again, the heat exchanger 14 is operated when the outside air temperature To becomes lower than the management temperature Tc by the lower limit temperature management width ΔT1 ° C. or more, and is stopped when the outside temperature To becomes higher than the management temperature Tc by the upper limit temperature management width ΔT2 ° C. or more. FIG. 5B shows that after the breeding days W, the heat exchanger 14 has entered a period when it is not necessary to use it. Of course, as shown in FIG. 5A, the operation is repeatedly started and stopped according to the temperature during the day. Therefore, even in the season when the outdoor temperature To during the daytime is sufficiently higher than the house temperature, the heat exchanger 14 operates if the temperature before dawn is lower than the management temperature Tc by the lower limit temperature management width ΔT1 ° C. or more.

  Further, as shown in FIG. 5B, the lower limit temperature management width ΔT1 is set to a large value according to the age of the broiler, and the upper limit temperature management width ΔT2 is set to a small value according to the age of the broiler. Yes. Broilers gain weight with age, and the broiler itself generates more heat. The lower limit temperature control width ΔT1 is set as a proportion of the rise in the temperature in the building due to the amount of heat generated by the broiler itself. The upper limit temperature management width ΔT2 is a value provided to suppress hunting of operation / stop of the heat exchanger 14, and the width (ΔT1 + ΔT2) serving as the dead zone is set to a constant value regardless of the age. The temperature management width ΔT2 is set to a small value according to the age of the broiler. Thereby, useless driving | operation of the heat exchanger 14 can be suppressed and the energy saving of fuel cost reduction can be performed efficiently.

  FIG. 6 is a flow showing in further detail the step (S112) in which the heat exchanger 14 of the flow of FIG. 4 operates. When operating the heat exchanger 14, first, the minimum ventilation amount Ae is determined (step S202). The minimum ventilation volume Ae is determined by the management ventilation volume determination unit 30B based on the management day age Md. This is because broilers know almost the required amount of oxygen according to their age.

  Further, the environmental index Ev and the breeding zone Bz may be taken into consideration for determining the minimum ventilation amount Ae. This is because there are cases where dust tends to stand up depending on the season and the condition of the bedding at that time, or the amount of ammonia in the air increases due to poor cleaning.

  Thus, when the environmental index Ev increases, it is necessary to perform ventilation that is equal to or greater than the minimum ventilation amount Ae calculated from the age. In FIG. 6, it is described as “Ae = F (Md, Ad)” that the minimum ventilation volume Ae is determined based on the correction value Ad determined by the management day age Md and the environmental index Ev.

  In addition, about the carbon dioxide, carbon monoxide, ammonia, and the amount of dust in the environmental index Ev, an allowable amount is provided for each. When any one item exceeds the allowable amount, the environmental index Ev is determined to be sufficiently large. In the ventilation system targeted by the present invention, the minimum ventilation amount Ae is determined based on the environmental index Ev. Since the ventilation system operates to perform ventilation equivalent to the minimum ventilation amount Ae, the environmental index Ev is a factor that determines the minimum ventilation amount Ae.

  Therefore, determining the environmental index Ev to be large corresponds to giving an instruction to increase the ventilation amount. That is, if any one of the items of the environmental index Ev exceeds the allowable value, the correction value Ad is set such that the minimum ventilation Ae is larger than the maximum ventilation 14Max of the heat exchanger 14 described later. Thus, the environmental index Ev is determined.

  How the correction value Ad is determined by the environmental index Ev is determined by the type of broiler and other factors. The relationship between the environmental index Ev and the correction value Ad is preferably input at the time of initial setting (step S102 in FIG. 4).

  Next, it is confirmed whether or not the breeding zone Bz is designated (step S204). If the breeding zone Bz is designated (Y branch in step S204), the process proceeds to step S250.

  If the breeding zone Bz is not specified (N branch in step S204), a heat exchanger 14 (use device) used in the heat exchanger 14 and an operation pattern P14 for selecting continuous operation or intermittent operation are obtained. (Step S206). It is also assumed that this is given to the control device 30 in advance by a table or the like. Or you may make it obtain | require with a numerical formula. When the minimum ventilation volume Ae is smaller than the minimum ventilation volume capacity of the heat exchanger 14 to be used, the operation pattern P14 is intermittent operation, and in other cases, it is continuous operation. This process may be performed by the management ventilation amount determination unit 30B.

  When the heat exchanger 14 to be used and the operation pattern P14 are determined, an instruction is issued to the corresponding heat exchanger 14. This instruction may be performed by the heat exchanger control unit 30D. The heat exchanger 14 (corresponding device) that has received the instruction starts (step S208).

  Processing when the breeding zone Bz is designated (Y branch in step S204) will be described. The designation of the breeding zone Bz means that the floor surface 2 of the chicken house 1 is divided into a plurality of sections and only a part of the breeding zone Bz is used. The designation of the breeding zone Bz is notified to the control device 30 by inputting the fact to the input device 31 when the entry date and the breeding zone Bz are changed. In the flow of FIG. 4, it can be performed at the initial setting in step S102 or the timer start portion in step S106.

  The control device 30 operates the heat exchanger 14 associated with the designated breeding zone Bz. When the camera 22 is set in the poultry house 1, if there is an instruction to use the breeding zone Bz, the control device 30 detects the breeding zone Bz currently used by viewing the video of the camera 22. To do. FIG. 6 shows a flow when the camera 22 is used. If a specific location of the breeding zone Bz is instructed, it is sufficient to skip to step S254.

  Specifically, images of the breeding zone Bz are copied at different times (step S250), and by comparing these, it is possible to determine which breeding zone Bz is used (step S252). Of course, the breeding zone Bz is determined by image analysis other than this, and the detection is completed. Such processing can be performed by the breeding zone determination unit 30C.

  When the breeding zone Bz is determined, the heat exchanger 14 and the operation pattern P14 to be used are determined (step S254). Thereafter, the corresponding heat exchanger 14 is instructed (step S256).

  When the operation of the heat exchanger 14 is started, the maximum ventilation amount 14Max of the heat exchanger 14 and the minimum ventilation amount Ae are compared (step S210). If the maximum ventilation volume 14Max is equal to or greater than the minimum ventilation volume Ae (Y branch in step S210), the process proceeds to step S118 in FIG. This is because it can be determined that the minimum ventilation is achieved only by the ventilation by the heat exchanger 14.

  If the maximum ventilation volume 14Max is smaller than the minimum ventilation volume Ae (N branch in step S210), one of the environmental index Ev is greater than the allowable value, and the heat exchanger 14 cannot fully ventilate. Is shown. Therefore, ventilation is performed using the door-mounted ventilation fan 12 and the shutter 13, or the side wall inlet 40 or the ceiling inlet 42 so that the temperature in the poultry house 1 does not become a predetermined value or less.

  That is, when the ventilation amount by the heat exchanger 14 has not reached the predetermined amount (minimum ventilation amount Ae) determined based on the value (environment index Ev) from the environmental meter 20, the ventilation by the heat exchanger 14 Ventilation by the door-mounted ventilation fan 12 is performed. The predetermined amount may be determined based on the age of the chicken. This is because the minimum ventilation Ae is determined based on the age of the chicken.

  Therefore, first, it is measured whether or not the house temperature Ti is higher than Tc−ΔTe (step S212). When the house temperature Ti is higher than Tc−ΔTe (Y branch of step S212), the shutter 13 is opened, and the door-mounted ventilation fan 12 is operated to ventilate (step S214).

  When the house temperature Ti is lower than Tc−ΔTe (N branch of step S212), the shutter 13 and the door-mounted ventilation fan 12 are closed (step S216). At this time, it is preferable to increase the temperature in the poultry house 1 by operating the heater 10 or increasing the heating capacity. Here, ΔTe is a value smaller than ΔT1. During operation of the heat exchanger 14, the outside air temperature To is lower than the house temperature Ti in the house 1. Therefore, when cold air is introduced into the poultry house 1, the house temperature Ti of the poultry house 1 is prevented from becoming lower than Tc−ΔT1.

  In addition, since the ventilation fan 12 with a door and the shutter 13 are arrange | positioned in the position which respond | corresponds, ventilation by the ventilation fan 12 with a door will become tunnel exhaust when it sees in the poultry house 1. Therefore, the air flow is close to the laminar flow from the end wall 4b toward the end wall 4a. This tunnel ventilation is suitable for chickens that are 6 to 7 weeks of age after molting and require a decrease in body temperature during hot weather. The door-mounted ventilation fan 12 and the shutter 13 are arranged at a position higher than the floor surface 2 by a height of 3 h (see FIG. 2). If the height 3h is set higher than the young chicks, the young chicks are not directly exposed to the cold.

  Further, in the case of young chicks, in particular, ventilation up to about 3 to 5 weeks of age (before molting) should be performed only from the ceiling inlet 42 or the side wall inlet 40 above the side walls 3a and 3b. This is because cold air is not directly applied to the chicks. Moreover, when the age is young, the environmental index Ev rarely deteriorates. In order not to use the ventilating fan 12 with a door while it is young, it can be realized by setting the minimum ventilation amount Ae determined based on the age to a small value.

  Further, as shown in FIG. 1, if the ventilation fans 12 with doors and the shutters 13 are arranged in two or more stages, not all the ventilation fans 12 with doors 12 and the shutters 13 are opened at once, but ventilation is performed. Ventilation may be performed by opening only the part. For example, if the amount of ammonia exceeds the allowable amount, ventilation may be performed by opening the upper ventilating fan 12 and the shutter 13 or the side wall inlet 40 or the ceiling inlet 42.

  In the flow shown above, the ventilation operation by the ventilation fan 12 with door 12 and the shutter 13, or the side wall inlet 40 or the ceiling inlet 42 is performed by changing the minimum ventilation amount Ae from the environmental index Ev through the correction value Ad. Although control is performed, ventilation may be performed by the door-mounted ventilation fan 12 and the shutter 13, or the side wall inlet 40 or the ceiling inlet 42 when each item becomes higher than the allowable value. This is because the control device 30 is connected to the carbon dioxide meter 20a, the carbon monoxide meter 20b, the ammonia meter 20c, and the dust meter 20d and can directly know the respective values. Further, here, as the environmental index Ev, carbon dioxide, carbon monoxide, ammonia, and the amount of dust are taken as examples, but the environmental index Ev may include other items.

  In addition, referring to FIG. 4 again, in FIG. 6, the process (step S112) when the heat exchanger 14 is operated has been described. In particular, when the environmental index Ev becomes high during the operation of the heat exchanger 14 and the minimum ventilation amount Ae becomes larger than the maximum ventilation amount 14Max of the heat exchanger 14, the ventilation fan 12 with door 12 and the shutter 13, or the side wall inlet 40 is used. In addition, the process of ventilating by operating the ceiling inlet 42 has been described.

  On the other hand, when the outside air temperature To is high and ventilation is performed with the door-mounted ventilation fan 12 and the shutter 13 (step S116), when the environmental index Ev is increased, the ventilation amount is increased by increasing the rotation speed of the door-mounted ventilation fan 12. To increase. If the environmental index Ev becomes high in step S112 and step S116, a warning may be displayed on the display device 32.

  FIG. 7 shows the floor surface 2 of the poultry house 1 divided into breeding zones Bz. It is assumed that there are four breeding zones Bz and the third zone from the left is used. The control device 30 (not shown in FIG. 7) knows that this zone instruction has been received in advance or that breeding is being performed in this zone through image analysis of the camera 22.

  And operation instruction | indication is performed to 4 sets 8 heat exchangers 14 which can cover a 3rd zone. In this way, since only the breeding zone Bz is ventilated and the entire poultry house 1 is not ventilated, unnecessary power consumption can be suppressed. In addition, when the minimum ventilation volume Ae is lower than the minimum ventilation volume of 4 sets of 8 heat exchangers 14, the uniformity of ventilation in the breeding zone Bz is ensured by operating each heat exchanger 14 in order.

  For example, in FIG. 7, reference numerals 1 to 8 are assigned to eight heat exchangers 14. Then, the heat exchanger 14 is operated in the order of the symbols, and when one unit is operating, the other heat exchanger 14 is stopped. Of course, you may perform intermittent operation about all the applicable heat exchangers 14. FIG.

  By operating the heat exchanger 14 intermittently in this way, the inside of the breeding zone Bz can be uniformly ventilated, and the filter or heat exchange element 14a (see FIG. 2) of the inside air suction port 14oi of the heat exchanger 14 can be obtained. The degree of soiling can be made constant for each heat exchanger 14.

  As described above, the control device for the ventilation system of the poultry house according to the present invention can perform temperature management and ventilation management in accordance with the number of breeding days in the poultry house, suppress unnecessary power consumption, and perform energy saving operation. .

  The control device of the ventilation system for a poultry house according to the present invention can be suitably used for a poultry house for breeding broilers.

DESCRIPTION OF SYMBOLS 1 Chicken house 2 Floor Bz Rearing zone 3a, 3b Side wall 3ai, 3bi Inner side wall 3ao, 3bo Outer side wall 3L Distance 3h between side walls 3a, 3b 4h from floor surface 2 4a, 4b Wife wall 5 Roof 2a Floor surface 2 Center line 10 Heater 10a Spacing between each heater 10 Ventilation fan 12a with doors Air guide fans 13, 13a Shutter 14 Heat exchanger 14a Heat exchange element 14o Exhaust air path 14i Supply air path 14oi Inside air suction port 14oo Inside air discharge port 14of Fan 14ii Outside air suction port 14io Outside air outlet 14if Fan P14 Operation pattern 14Max of heat exchanger 14 Maximum ventilation 16a Outside temperature thermometer 16b Outside temperature thermometer 18a Inside temperature meter 18b Inside humidity meter 20 Environmental measurement meter (Carbon dioxide meter 20a, carbon monoxide meter 20b, ammonia meter 20c, dust meter 20d)
Ev environmental index 22 camera 30 control device 30m memory 30T timer 30A management temperature determination unit 30B management ventilation amount determination unit 30C breeding zone determination unit 30D heat exchanger control unit 30E day age determination unit 30F outside temperature detection unit 31 input device 32 display device 40 Side wall inlet 42 Ceiling inlet Tc Management temperature Hc Management humidity ΔT1 Lower limit temperature management range ΔT2 Upper limit temperature management range Ae Minimum ventilation volume Ad Correction value based on environmental index Ev Management parameter To Outside temperature Ti Indoor temperature Md Management day age Rd Current Age RE Expected shipping age

Claims (7)

A rectangular floor;
A side wall provided on the long side of the rectangle;
A wife wall provided on the short side of the rectangle;
A building composed of a roof covering the floor;
A plurality of heaters arranged in a longitudinal direction between the side walls;
Among the wife walls, a ventilating fan with a door disposed on one of the wife walls,
Among the wife walls, the other wife wall or a shutter disposed on the side wall close to the wife wall,
A heat exchanger provided on the side wall;
An environmental meter disposed in the building;
A control device for a ventilation system of a poultry house provided with an outside air thermometer arranged outside the building,
Connected to at least the environmental meter and the outside air thermometer,
Control the operation of the heat exchanger and the ventilator with door,
The control apparatus of the ventilation system of the poultry house which operates the said ventilation fan with a door, when the ventilation amount by the said heat exchanger has not reached the predetermined amount determined based on the value from the said environmental meter.   The control device for a ventilation system of a poultry house according to claim 1, wherein the predetermined amount is determined based on a value of the environmental measurement meter and an age of a chicken to be bred.   The control apparatus of the ventilation system of the poultry house described in any one of Claim 1 or 2 which provided the side wall inlet in the upper part of the said side wall, and provided the ceiling inlet in the said roof. It has a management temperature determination unit that determines the management temperature based on the age of the broiler,
When the outside air temperature is lower than the control temperature by ΔT1 ° C., the heat exchanger is operated,
The control apparatus for a ventilation system of a poultry house according to any one of claims 1 to 3, wherein the heat exchanger is stopped when the outside air temperature is higher by ΔT2 ° C than the management temperature. The ΔT1 is set to a large value according to the age of the broiler,
The control device for a ventilation system of a poultry house according to any one of claims 1 to 4, wherein the ΔT2 is set to a small value according to an age of the broiler. The poultry house is divided into a plurality of breeding zones,
The control apparatus for a ventilation system of a poultry house according to any one of claims 1 to 5, wherein the heat exchanger associated with the breeding zone is operated. The poultry house further comprises a camera for monitoring the breeding zone,
A breeding zone determination unit for determining the currently used breeding zone from the video of the camera;
The control apparatus for a ventilation system of a poultry house according to claim 6, wherein the heat exchanger associated with the currently used breeding zone detected by the breeding zone determination unit is operated.