WO2017199359A1

WO2017199359A1 - Method for ventilating chicken coop

Info

Publication number: WO2017199359A1
Application number: PCT/JP2016/064710
Authority: WO
Inventors: 敏視安藤; 幸太郎安田
Original assignee: 株式会社ハイテム
Priority date: 2016-05-18
Filing date: 2016-05-18
Publication date: 2017-11-23
Also published as: KR20180079410A; JP6082506B1; CN108882693A; CN108882693B; JPWO2017199359A1; KR102077003B1

Abstract

In the present invention, air is forcibly discharged by discharge fans (11f) through a discharge outlet (11b) disposed in a wall (11) extending perpendicular to cage lines (90) to create a negative pressure in the chicken coop (1). Air is taken through side-wall inlets (20) disposed at upper parts of side walls (10). An air intake adjustment device is controlled on the basis of the difference in static pressure between the inner space and the outer space which is detected by a differential pressure gauge (40) as well as temperatures detected at multiple sites in the inner space such that opening/closing of the side-wall inlets by rotation plates (31) and the degree of opening are controlled to reduce the temperature difference in a flow path of air from upstream to downstream in the chicken coop, and the temperature difference in the vertical direction in which the cages are stacked.

Description

How to ventilate poultry houses

The present invention relates to a ventilation method for a poultry house.

In a poultry farm that raises a large number of birds, a large poultry house that contains multiple cage rows with cages connected in one direction is used. The present applicant has so far proposed a structure and a ventilation method of the ventilation and ventilation that makes the large poultry house windowless and ventilates in the direction in which the cage row extends, and has proposed and implemented the structure and ventilation method (for example, (See Patent Documents 1 and 2). The ventilating structures in these documents include an inlet port provided in one of a pair of walls (wife surfaces) orthogonal to the cage row, an exhaust port provided in the other wall, and a pair of side walls parallel to the cage row. Each of the upper portions has a basic structure including an elongated auxiliary air inlet provided between the roof and an air inlet adjusting device that opens and closes the auxiliary air inlet.

Then, the inside of the poultry house is made negative pressure by forcibly exhausting it with a fan attached to the exhaust port, and ventilation is performed by taking air into the poultry house from the outside through the inlet port or the auxiliary inlet port. The taken-in air circulates in the poultry house and is discharged from the exhaust port. In the process, it is warmed by the bird's body temperature. Therefore, when no countermeasure is taken, the temperature becomes higher in the downstream of the air flow. It is not desirable that the temperature environment differs depending on the position of the cage, which causes variations in the growth of birds to be reared and the production of eggs.

Therefore, in the techniques of Patent Documents 1 and 2, the air intake adjusting device is controlled based on the temperatures measured at a plurality of locations in the poultry house, and the air intake amount from the auxiliary air inlet is adjusted. Thereby, the temperature difference in the flow path from the upstream to the downstream of the air flow in the poultry house can be reduced.

However, in one cage row, a plurality of cages are stacked in the vertical direction, and have a height of several meters. And warm air rises naturally. Therefore, in the techniques of Patent Documents 1 and 2, even if the temperature difference in the flow path from upstream to downstream of the air flow in the poultry house can be reduced, a large temperature difference may occur in the vertical direction. For example, when the cages are stacked in 5 to 6 stages, there may be a temperature difference of 5 ° C to 8 ° C between the uppermost cage and the lowermost cage in winter when the outside air temperature is low. .

Japanese Patent No. 3703168 Japanese Patent No. 3598212

Therefore, in view of the above circumstances, the present invention can reduce the temperature difference in the flow path from upstream to downstream of the air flow in the poultry house, and also in the vertical direction in which the cages are stacked. It is an object of the present invention to provide a method for ventilating a poultry house that can reduce the temperature.

In order to solve the above problems, a ventilation method for a poultry house according to the present invention (hereinafter, simply referred to as “ventilation method”)
“An exhaust port provided in one of the walls orthogonal to the cage row in which the cages are arranged in one direction,
An exhaust fan attached to the exhaust port;
A side wall inlet formed at an upper portion of at least one side wall parallel to the cage row;
In the poultry house comprising an air inlet adjustment device that opens and closes the side wall air inlet,
By operating the exhaust fan and exhausting from the exhaust port, the internal space becomes negative pressure, and air is taken in from the external space through the side wall inlet port,
The difference between the static pressure in the internal space and the static pressure in the external space is detected, and the difference in the detected static pressure is within a predetermined range. While controlling the opening and closing and opening,
The temperature is detected at a plurality of locations in the internal space, and the opening and closing and the opening of the side wall inlet by the inlet adjustment device are controlled so that the detected temperature is within a predetermined range. .

The “side wall inlet formed in the upper part of the side wall” includes a side wall inlet formed by providing a gap between the upper end of the side wall and the roof, and the upper end of the side wall when the poultry house has a ceiling. A side wall inlet formed by providing a gap with the ceiling can be exemplified. This side wall inlet is formed in “at least one of the side walls parallel to the cage row” and may be formed on both of the pair of side walls or only on one side wall. obtain. When there are a plurality of cage rows, it is desirable that the cage rows are formed on both of the pair of side walls.

Examples of the “air inlet adjustment device” include a configuration having a single-open or double-open door member that opens and closes the side wall inlet by rotation, and a configuration having a door member that opens and closes the side wall inlet by sliding. it can.

In this configuration, the difference between the static pressure in the internal space of the poultry house and the static pressure in the external space (hereinafter sometimes referred to as “internal / external pressure difference”) is determined in advance by opening / closing or opening of the side wall inlet. Adjust so that it is within the specified range. As a result, the speed of the air flowing in through the side wall inlet, and the distance that the inflowing air reaches above a certain speed, the size of the internal space, the number of cage rows, the height of the cage, etc. It can be suitable for the conditions. As a result, it is possible to create a state in which the air in the internal space is totally agitated by the air flowing in through the side wall inlet.

In addition, the temperature is detected at a plurality of locations in the internal space, and the opening and closing of the side wall inlet and the opening are adjusted so that the detected temperature is within a predetermined range. Therefore, the temperature difference in the flow path from the upstream to the downstream of the air flow in the poultry house can be reduced by the control based on the temperature detection, and the cages are stacked by the stirring action of the air by adjusting the pressure difference inside and outside. Even in the vertical direction, the temperature difference can be reduced.

The ventilation method according to the present invention is the above configuration,
“The control of the air intake adjusting device based on the detected static pressure difference is performed prior to the control of the air intake adjusting device based on the detected temperature”.

In the present invention, the opening and closing and the opening degree of the side wall inlet are controlled based on the detection of the pressure difference between the inside and the outside, and are also controlled based on the detection of the temperature. For this reason, at the start of control, control based on detection of either the pressure difference or temperature is performed first, but in this configuration, control based on detection of the pressure difference is performed first. That is, the air in the internal space is agitated, and the intake air adjusting device is controlled based on the temperature detection after the temperature in the vertical direction approaches a uniform level.

As a result, it is sufficient to install temperature sensors for detecting the temperature in order to adjust the opening and closing of the side wall inlet and the opening degree at a plurality of locations in the air flow path from the side wall inlet to the exhaust port. There is no need to install a plurality of temperature sensors in a vertical direction at a certain position. On the other hand, if different temperatures are detected by a plurality of temperature sensors installed in the vertical direction when the air is not sufficiently stirred and the temperature difference in the vertical direction is large, the input based on the detected temperature is used. The control of the air adjustment device is considered to be complicated.

Therefore, according to this configuration, the temperature difference in the flow path from the upstream to the downstream of the air flow in the poultry house can be reduced by simple control with a simple configuration, and the upper and lower sides where the cages are stacked can be reduced. Also in the direction, the temperature difference can be reduced.

In addition to the above configuration, the ventilation method according to the present invention includes:
"The side wall inlet is divided into a plurality in the longitudinal direction in which the cage row extends,
The said air intake adjustment device shall consist of a plurality of units which adjust opening and closing and an opening degree for every divided said side wall air inlet.

In this configuration, the side wall inlet is divided into a plurality of portions in the longitudinal direction substantially along the direction of air flow in the poultry house, and each of the divided side wall inlets is opened or closed. Or, the opening when opening is made different. Thereby, for example, it is possible to adjust to increase the inflow amount of air from the side wall inlet as the downstream temperature becomes higher due to warming of the bird body temperature in the air flow. Therefore, the control which reduces the temperature difference in the flow path from the upstream of the air flow in a poultry house to downstream can be performed easily.

If the total length of the side wall inlet is the same as the total length of the cage row and the positions of both ends of the side wall inlet and the cage row are aligned, the fresh air flowing in from the side wall inlet will cause all birds to The surrounding space can be reliably ventilated, which is desirable.

As described above, as an effect of the present invention, the temperature difference in the flow path from the upstream to the downstream of the air flow in the poultry house can be reduced, and the temperature difference in the vertical direction in which the cages are stacked is also reduced. It is possible to provide a method for ventilating a poultry house that can be reduced.

It is a block diagram of the poultry house which uses the ventilation method which is one Embodiment of this invention. It is a sketch of the poultry house of FIG. FIG. 3 is a sectional view taken along line XX in FIG. 2 (illustration of an exhaust fan is omitted). FIG. 4 is an enlarged view of a range A in FIG. 3.

Hereinafter, a ventilation method according to an embodiment of the present invention and a poultry house 1 using the ventilation method will be described with reference to FIGS. 1 to 4.

First, the structure of the poultry house 1 will be described. The poultry house 1 is a substantially rectangular parallelepiped building surrounded by four walls, and a cage row 90 in which cages are arranged in one direction is accommodated in the internal space. The poultry house 1 has an exhaust port 11b provided in one of the

walls

11 and 12 orthogonal to the cage row 90, an exhaust fan 11f attached to the exhaust port 11b, and a wall provided with the exhaust port 11b. 11, an air inlet 12 b provided in the wall 12 opposite to the wall 11, a side wall air inlet 20 formed on each of the pair of side walls 10 parallel to the cage row 90, and an air inlet that opens and closes the side wall air inlet 20. And an adjusting device 30.

Specifically, the poultry house 1 is a gable structure, the length in the direction parallel to the ridge 80 where the roof 81 intersects is several tens to hundreds of meters, and the direction perpendicular to the ridge 80 (hereinafter referred to as “width direction”). ”) Is approximately a few meters to 40 meters in length, and is an elongated shape shorter than the length in the direction parallel to the ridge 80. A plurality of cage rows 90 are illustrated in the present embodiment (three rows are illustrated in FIGS. 2 and 3), but may be a single row. The longitudinal direction in which the cage row 90 extends is the direction in which the ridge 80 extends. That is, the

walls

11 and 12 provided with the exhaust port 11b and the intake port 12b are a pair of wife surfaces. The exhaust port 11b and the intake port 12b are each provided with a large area that is 1/2 or more of the entire wall area. The air inlet 12b is covered with a cooling pad 12p formed of paper or nonwoven fabric with high water absorption. On the other hand, a plurality of large exhaust fans 11f are vertically and horizontally attached to the exhaust port 11b.

The side wall inlet 20 is formed by providing a gap between the upper end of the side wall 10 and the roof 81 in each of the pair of side walls 10. More specifically, the space in the attic is partitioned by a partition plate 82 suspended from the roof 81 along the side wall 10 inside the side wall 10, and the lower end side of the partition plate 82 and the upper end side of the side wall 10. In between, the side wall inlet 20 is opened.

Further, the side wall inlet 20 has the same overall length as the cage row 90 and is installed with the positions of both ends thereof matching the both ends of the cage row 90 and is divided into a plurality of portions in the longitudinal direction. Yes. The inlet adjustment device 30 includes a plurality of units that adjust the opening and closing and the opening degree for each of the divided side wall inlets 20. 1 and 2 illustrate the case where the side wall inlet 20 is divided into three. In the following, for the side wall inlet 20 divided into three, the “side wall inlet 20a” closest to the inlet 12b, the “side wall inlet 20b” in the center, and the “side wall inlet 20b closest to the exhaust 12b” will be described. The term “air opening 20c” is used, and when there is no need to distinguish between them, they are collectively referred to as “side wall air inlet 20”.

Note that the side wall inlet 20 is in a state where the overall length is “same” as the overall length of the cage row 90 and the positions of both end portions thereof are “installed in accordance with both end portions of the cage row 90”. It is not practical to limit it to a state where they are completely the same and the positions of both ends are completely coincident. Here, when the longitudinal center of each of the side wall inlet 20 and the cage row 90 is aligned, it is defined as including the case where the overall length of the longer side is “within the range of the overall length of the shorter side + 10%”. .

The plurality of units of the air inlet adjustment device 30 have the same configuration, each of which has a flat plate shape and can be rotated around a horizontal axis. A rotation plate drive mechanism for rotating the angle is provided. The plurality of rotating plates 31 that are rotated by one unit of the air inlet adjustment device 30 are disposed adjacent to the vicinity of the upper end of the side wall 10, and the entire length thereof is divided into the side wall inlet 20a. , 20b, 20c are the same as one length.

The rotating plate driving mechanism includes a winch (not shown) driven by a motor, a main wire 32, and a plurality of sub wires 33. One end of the main wire 32 is wound around the winch, and the other end is fixed along a side wall 10 by being fixed to a bracket (not shown) protruding from the side wall 10 via a spring. ing. One end of each of the plurality of sub wires 33 is attached in the vicinity of the free end of each of the plurality of rotating plates 31 belonging to the same unit of the air intake adjustment device 30, and the other end is connected to the main wire 32. . And each subwire 33 changes direction by being wound around the 1st pulley 34 and the 2nd pulley 35 attached to the support plate 39 projected from the side wall 10 for every rotation board 31, The rotating plate 31 that is going to rotate downward due to its own weight is pulled from obliquely above.

The opening / closing and opening degree of the rotating plate 31 can be adjusted for each of the divided side wall inlets 20 by the rotating plate driving mechanism having such a configuration. Specifically, when the main wire 32 is wound up by the winch by driving the motor, the rotating plate 31 is pulled by the sub wire 33 connected to the winch and rotated upward, and the opening degree of the side wall inlet 20 is increased. Becomes smaller. On the contrary, when the main wire 32 is drawn out by the winch, the sub wire 33 is loosened, so that the rotating plate 31 is rotated downward by its own weight, and the opening of the side wall inlet 20 is increased. In FIG. 1, a plurality of rotating plates 31 that are simplified for the sake of clarity and are adjusted by simultaneously rotating the same opening and closing and opening of the divided side wall inlet 20 by the same angle are shown. This is shown as a single rotating plate 31.

In addition to the above configuration, the poultry house 1 includes a plurality of temperature sensors 50 for measuring the temperature of the internal space. There are at least as many temperature sensors 50 as there are divided side wall inlets 20, and the temperature sensors 50 are attached in the vicinity of the divided side wall inlets 20. Furthermore, the poultry house 1 includes a differential pressure gauge 40 that detects the difference between the static pressure in the internal space and the static pressure in the external space. The differential pressure gauge 40 is installed in the internal space of the poultry house 1, the low-pressure side pipe 41 is disposed in the internal space, and the high-pressure side pipe 42 is drawn out to the external space.

Next, the ventilation method used by the chicken house 1 having the above configuration will be described. In the ventilation method, the exhaust fan 11f is operated and exhausted from the exhaust port 11b to create a negative pressure in the internal space and take air from the external space through at least one of the side wall inlet port 20 and the inlet port 12b. It is. In addition, this ventilation method is based on the temperature of the external space, the first mode in which the air is taken in from the external space only through the side wall inlet 20, and the second mode in which only the inlet 12b is performed. The mode is switched to one of the third modes performed via both the side wall inlet 20 and the inlet 12b.

In the first mode and the third mode in which air is taken in from the external space through the side wall inlet 20, the difference between the static pressure in the internal space and the static pressure in the external space is detected, and the detected static pressure difference Is controlled by opening / closing and opening the side wall inlet 20 by the inlet adjustment device 30 so as to be within a predetermined range, and the temperature is detected at a plurality of locations in the internal space, and the detected temperature is determined in advance. The opening / closing and the opening degree of the side wall inlet 20 by the inlet adjustment device 30 are controlled so as to be within the range.

For example, when the outside air temperature is high such as in summer, air is taken in from the inlet 12b (second mode). Thereby, air can be distribute | circulated at high speed between the

walls

11 and 12 which oppose, and it can ventilate, cooling internal space with the outside air lower than the temperature in the poultry house 1. At this time, the temperature of the air passing through the cooling pad 12p, which has been deprived of the heat of vaporization of water, is lowered by dropping, spraying water on the cooling pad 12p covering the inlet 12b. The internal space can be effectively cooled.

On the other hand, when the outside air temperature is low such as in winter, the temperature on the inlet 12b side (upstream side) is obtained by taking outside air from the large area inlet 12b and passing the chicken house 1 vertically through the outlet 11b. Is too low. Therefore, the air inlet 12b is closed and outside air is taken in from the side wall inlet 20 (first mode).

In the first mode, since the direction in which air flows in through the side wall inlet 20 is different from the direction in which air is discharged through the exhaust port 11b, the air flow is slower than in the second mode. . Therefore, on the other hand, there is an advantage that the internal space is not overcooled, and the air flow is likely to stay or be biased, and the position in the flow path from the side wall inlet 20 to the exhaust outlet 11b or the vertical direction Depending on the position, the temperature tends to be non-uniform.

Therefore, in the present embodiment, the pressure difference between the inside and outside of the poultry house 1 is measured by the differential pressure gauge 40, and the air inlet adjustment device 30 is controlled so that the difference falls within a predetermined range. Adjust the opening and closing and opening.

Here, the “predetermined range” regarding the difference in static pressure is experimentally determined in advance for each poultry house 1 as a condition for obtaining a stirring action by the air flowing from the side wall inlet 20. For example, when the distance between the side walls 10 is large (in other words, the length in the width direction of the poultry house 1 is large) and the cage row 90 is numerous, the air flowing in from the side wall inlet 20 It is necessary to reach the cage row 90 while maintaining a certain level of wind speed. When a large number of cages are stacked, the air flowing from the side wall inlet 20 needs to reach the lowest cage while maintaining a certain level of wind speed. Therefore, for each poultry house where these conditions are different, the relationship between the internal and external pressure difference and the wind speed and reach distance of the air flowing in from the side wall inlet 20 is examined, so that the air flows in from the side wall inlet 20. The range of the pressure difference that can sufficiently obtain the stirring action by air is set.

It should be noted that the greater the flow rate of the incoming air, the greater the action of stirring the air in the internal space, but if the flow rate is too high, it is undesirable for the bird to stress the bird. Therefore, the range of the pressure difference between the inside and the outside is set so that the stirring action by the air flowing in from the side wall inlet 20 becomes “no excess or deficiency”.

Then, the inlet plate 30 is rotated by controlling the intake air adjusting device 30 so that the pressure difference between the inside and outside measured by the differential pressure gauge 40 is within the set range. Even if the operating conditions of the exhaust fan 11f that forcibly exhausts air from the internal space to the external space are the same, the pressure difference between the inside and the outside can be changed by the opening of the side wall inlet 20. Specifically, if the rotation plate 31 is rotated in the closing direction to reduce the opening area of the side wall inlet 20, the pressure difference between the inside and outside increases, the flow rate of the incoming air increases, The distance to reach while maintaining the flow rate will be longer. Conversely, if the opening area of the side wall inlet 20 is increased by rotating the rotating plate 31 in the opening direction, the pressure difference between the inside and the outside is reduced, and the flow velocity of the air flowing from the side wall inlet 20 is reduced. At the same time, the distance that can be reached while maintaining a certain flow velocity is shortened.

Further, when the operating condition of the exhaust fan 11f is changed in accordance with fluctuations in the outside air temperature, the pressure difference between the inside and outside also changes accordingly. The rotation plate 31 is rotated by controlling the device 30. For example, when the number of fans to be operated among the plurality of exhaust fans 11f is reduced with a decrease in the outside air temperature, the pressure difference between the inside and the outside is reduced. Is rotated in the closing direction. On the other hand, when the number of exhaust fans 11f to be operated is increased with an increase in the outside air temperature, the pressure difference between the inside and outside increases, so that the rotating plate 31 is rotated in the opening direction when it is outside the predetermined range. Move.

In addition, regarding the control at the time of adjusting the pressure difference between the inside and outside to a predetermined range, the rotation plates 31 belonging to the units of the air inlet adjustment device 30 that opens and closes the different side

wall air inlets

20a, 20b, and 20c are simultaneously the same. Turn the angle.

In this way, by adjusting the pressure difference between the inside and outside to be within a predetermined range, the air in the internal space is totally stirred by the air flowing in through the side wall inlet 20. Can be made. When the internal and external pressure differences become stable within a predetermined range and the air in the internal space is well agitated, the temperature is detected at a plurality of locations based on the temperature detected by the temperature sensor 50. The opening and closing of the side wall inlet 20 and the opening degree are adjusted so that the temperature is within a predetermined range.

Here, the “predetermined range” regarding the temperature can be determined by the size of the poultry house 1, the length of air circulating in the poultry house 1, the type of bird (whether it is a chick or an adult chicken), and the like. . For example, the size of the allowable temperature range can be changed according to the length of air flowing in the poultry house 1. Or when raising a bird with low tolerance with respect to a temperature change like a chick, the allowable range of temperature can be set small.

Since the air circulating in the poultry house 1 is warmed by the body temperature of the birds, the temperature inevitably increases in the downstream. Therefore, it is not practical to set a target value for the same temperature regardless of the position in the internal space. Therefore, the case where the target temperature range is set to “average temperature ± α ° C.” for the temperature in the entire internal space will be described as an example. For example, it is detected in the vicinity of the side wall inlet 20a closest to the inlet 12b. The target temperature value is set to “average temperature−α ° C.”, the target temperature value detected in the vicinity of the central side wall inlet 20b is set to “average temperature”, and the side wall closest to the exhaust port 11b is set. The target value can be set higher toward the downstream side so that the target value of the temperature detected in the vicinity of the inlet 20c is set to “average temperature + α ° C.”.

In many cases, immediately after the temperature adjustment is started, the temperature detected in the vicinity of the side wall inlet 20a is almost equal to the outside air temperature and is lower than the target value “average temperature−α ° C.”. Therefore, in order to increase the temperature by reducing the amount of outside air taken in, the rotation plate 31 is rotated in the closing direction at the side wall inlet 20a. On the other hand, the temperature detected in the vicinity of the side wall inlet 20c is higher than the target value “average temperature + α ° C.” in the initial stage of temperature adjustment. Therefore, in order to increase the intake amount of outside air and lower the temperature, the rotation plate 31 is rotated in the opening direction at the side wall inlet 20c. Since the temperature detected in the vicinity of the side wall inlet 20b is usually close to an average value which is a target value, the rotating plate 31 hardly moves at the side wall inlet 20b.

By taking the detected temperature from the temperature sensor 50 at regular time intervals and repeating the control of the rotating plate 31 by the inlet adjustment device 30 as described above, the temperatures detected at a plurality of locations gradually approach the target value. , Stable within the set tolerance. Thereafter, at a predetermined interval, the control of the intake air adjusting device 30 based on the detection of the internal and external pressure difference and the control of the intake air adjusting device 30 based on the temperature detection are alternately performed.

Here, a general-purpose computer having a main storage device, an auxiliary storage device, and a processor can be used for controlling the air intake adjustment device 30. A control program for rotating the rotating plate 31 by driving the motor based on the detection of the differential pressure gauge 40 and the temperature sensor 50 is stored in the main storage device, and the processor performs processing according to this control program.

When the outside air temperature is medium, such as during the summer and winter seasons, both the inlet 12b and the side wall inlet 20 are used together for taking in the outside air (third mode). Further, in the first mode and the third mode in which air is taken in through the side wall inlet 20, it is not necessary that all of the divided side wall inlets 20 are open, and one or more side wall inlets are provided. 20 may be closed by the rotating plate 31.

As described above, according to the ventilation method of the present embodiment, the opening and closing of the side wall inlet 20 and the opening degree are adjusted based on the detection of the pressure difference between the inside and the outside, thereby flowing in through the side wall inlet 20. Air can create a state in which the air in the interior space is totally agitated. Accordingly, the opening and closing of the side wall inlet 20 and the adjustment of the opening degree are performed by using the control based on the detection of the temperature at a plurality of locations in the internal space and the control based on the detection of the pressure difference inside and outside the house 1 The temperature difference in the flow path from the upstream to the downstream of the air flow can be reduced, and the temperature difference can also be reduced in the vertical direction in which the cages are stacked.

Further, in this embodiment, when opening / closing the side wall inlet 20 and opening degree adjustment are started, control based on detection of the internal and external pressure difference is performed prior to control based on temperature detection. Thus, control based on the temperature detection is performed after the air in the internal space is sufficiently agitated and the temperature in the vertical direction approaches a uniform level. Therefore, the temperature difference from the upstream to the downstream of the air flow in the poultry house 1 and the temperature difference in the vertical direction can be reduced by simple control with a simple configuration in which the number of temperature sensors 50 is suppressed.

Furthermore, in this embodiment, the side wall inlet 20 is divided into a plurality of parts in the longitudinal direction, and the opening / closing and opening thereof can be adjusted separately. Thereby, the control which makes the temperature of the internal space of the poultry house 1 warmed by the body temperature of the bird and becoming higher in the downstream becomes within a predetermined range can be easily performed.

In addition, in the present embodiment, by switching to any one of the first mode to the third mode in which the air intake port from the external space is different, it is possible to always cope with seasonal changes and fluctuations in the outside air temperature. Ventilation can be performed.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above-described embodiments, and various improvements and design changes can be made without departing from the scope of the present invention. It is.

For example, in the above description, as the air inlet adjustment device 30, the configuration in which the side wall air inlet 20 is opened / closed by one opening by the rotation of the rotating plate 31 is illustrated, but the opening / closing and opening degree of the side wall air inlet 20 can be adjusted. If it is a structure, it will not be limited to this, The structure which opens and closes by double opening by rotation, or the structure which slides in one direction and can open and close can be employ | adopted.

Moreover, although the case where the side wall inlet 20 was divided | segmented into three in the longitudinal direction was illustrated above, if the number of divisions is set so that the side wall inlet is longer in the longitudinal direction, the temperature inside the poultry house Control within a predetermined range can be performed more precisely.

Furthermore, although the case where the inlet 12b was covered with the cooling pad 12p was illustrated in the above, the inlet 12b may not be covered with the cooling pad in a poultry house where the temperature in summer is not so high. In place of the cooling pad, the air inlet 12b may be covered with a light shielding ventilation member that does not allow light to pass through but allows air to pass through naturally. This light-blocking ventilation member is a member in which a large number of thin plate materials are fixed in a frame at intervals, and the thin plate material is curved, bent or inclined so that light does not pass through it but air is naturally A ventilation space that passes therethrough is formed.

Claims

An exhaust port provided in one of the walls orthogonal to the cage row in which the cage is continuously provided in one direction;
An exhaust fan attached to the exhaust port;
A side wall inlet formed at an upper portion of at least one side wall parallel to the cage row;
In the poultry house comprising an air inlet adjustment device that opens and closes the side wall air inlet,
By operating the exhaust fan and exhausting from the exhaust port, the internal space becomes negative pressure, and air is taken in from the external space through the side wall inlet port,
The difference between the static pressure in the internal space and the static pressure in the external space is detected, and the difference in the detected static pressure is within a predetermined range. While controlling the opening and closing and opening,
The temperature is detected at a plurality of locations in the internal space, and the opening and closing and the opening of the side wall inlet by the inlet adjustment device are controlled so that the detected temperature falls within a predetermined range. How to ventilate a house.
2. The poultry house ventilation method according to claim 1, wherein the control of the air intake adjusting device based on the detected static pressure difference is performed prior to the control of the air intake adjusting device based on the detected temperature. .
The side wall inlet is divided into a plurality in the longitudinal direction in which the cage row extends,
2. The poultry house ventilation method according to claim 1, wherein the air intake adjustment device includes a plurality of units that adjust opening and closing and an opening degree for each of the divided side wall air inlets.