KR20180079410A - Ventilation method of chicken coop - Google Patents

Abstract

The air is forcedly discharged from the air outlet 11b formed in the wall 11 orthogonal to the cage row 90 to the exhaust fan 11f so that the inside of the chicken canal 1 is made to be in a negative pressure and the sidewall inlet port 20, controls the dressing adjustment device based on both the difference between the static pressure in the inner space and the outer space detected by the differential pressure gauge 40 and the temperature detected at a plurality of locations in the inner space, And the opening degree of the sidewall entry port by means of the sidewall inlet port, thereby reducing the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, and the temperature difference in the vertical direction in which the cage is stacked.

Description

Ventilation method of chicken coop

The present invention relates to a method of ventilating a chicken coop.

In a poultry facility for breeding a large number of chickens, a large chicken farm in which a plurality of cage rows in which cages are continuously arranged in one direction is used. The present applicant has heretofore called such a large chicken coop as a "windowless" and called "tunnel ventilation" for ventilation in a direction in which a cage column extends, (See, for example, Patent Documents 1 and 2). The ventilation structure in these documents is composed of an inlet port formed on one side of a pair of walls orthogonal to the cage row (a front side and a rear side) and an exhaust port formed on the other side An auxiliary inlet port provided between the roof and the upper portion of each of the pair of side walls parallel to the cage row and an opening for closing the auxiliary inlet port, And has a basic structure as an adjusting device.

The ventilation is performed by forcibly venting the air by a fan attached to the ventilation hole, thereby making the inside of the chicken cavity under negative pressure and receiving air from the outside through the inlet or auxiliary inlet port. The received air is circulated through the chicken coop and discharged from the exhaust port, but in the process, it is warmed by the body temperature of the chicken. Therefore, when no countermeasure is taken, the temperature becomes higher as the air flow is downstream. The difference in the temperature environment depending on the position of the cage is not preferable because it causes variations in the growth of the breed and the yield of the eggs produced.

Therefore, in the techniques of Patent Documents 1 and 2, the dressing adjustment device is controlled based on the temperature measured at a plurality of places in the chicken coop, and the amount of entrainment from the auxiliary inlet is adjusted. Thereby, the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, can be reduced.

However, in one cage row, a plurality of cages are stacked in the vertical direction, and the height of the cage is several meters. And the warm air rises by itself. Therefore, in the technologies of Patent Documents 1 and 2, even if the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, can be reduced, a large temperature difference may occur in the vertical direction. For example, when the cages are stacked in five to six stages, there is a case where a temperature difference of 5 ° C to 8 ° C is generated in the uppermost cage and the lowermost cage in the winter season where the received outside temperature is low .

: Japanese Patent No. 3703168 : Japanese Patent No. 3598212

Therefore, in view of the above-described circumstances, it is an object of the present invention to reduce the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, and to reduce the temperature difference even in the vertical direction in which the cages are stacked And to provide a ventilation method of a chicken coop.

In order to solve the above problems, a chicken coop ventilation method (hereinafter simply referred to as " ventilation method " in some cases)

"An exhaust port provided at one of the walls orthogonal to the cage column formed continuously in one direction,

An exhaust fan attached to the exhaust port,

A sidewall entry opening formed in at least one upper portion of a sidewall parallel to the cage row,

And a dressing adjustment device for opening and closing the side wall mouthpiece

In the chicken coop,

The exhaust fan is operated to exhaust air from the exhaust port to make the internal space sound pressure, to receive air from the external space through the side wall entry port,

The opening and closing of the sidewall entry port by the dressing adjustment device is controlled so that the difference between the static pressure of the internal space and the static pressure of the external space is detected and the difference of the detected static pressure is within a predetermined range,

The temperature is detected at a plurality of places in the inner space and the opening and closing of the sidewall entry port by the dressing adjustment device is controlled so that the detected temperature is within a predetermined range ".

The sidewall entry port formed by setting a gap between the top of the sidewall and the roof can be used as the sidewall entry port formed by setting a gap between the top of the sidewall and the ceiling, Can be exemplified. This side wall inserting hole is formed in at least one of the side walls parallel to the cage row, and may be formed on both side walls or only on one side wall. In the case of a plurality of cage rows, it is preferable that they are formed on both of the pair of side walls.

Examples of the "dressing adjustment device" include a structure having a door member that is opened to one side or opened to both sides by opening and closing the side wall mouthpiece by rotation, and a door member that opens and closes the side wall mouthpiece by a slide.

In this configuration, the difference between the static pressure in the inner space of the chicken coop and the static pressure in the outer space (hereinafter sometimes referred to as " inner and outer pressure differences ") is adjusted to be within a predetermined range by opening or closing the sidewall entrance opening . Accordingly, the velocity of the air introduced through the side wall inserting port and the distance at which the incoming air reaches above the speed can be made appropriate to the condition of the chicken coop, such as the size of the inner space, the number of cage rows, the height of the cage . Accordingly, it is possible to make the state that the air in the internal space is entirely stirred by the air introduced through the side wall inlet.

In addition, the temperature is detected at a plurality of places in the inner space, and the opening and closing of the side wall inlet is adjusted so that the detected temperature is within a predetermined range. Therefore, by the control based on the detection of the temperature, it is possible to reduce the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, and by the stirring action of the air by adjusting the pressure difference between the inside and the outside , It is possible to reduce the temperature difference even in the vertical direction in which the cages are stacked.

In the ventilation method according to the present invention,

It can be said that the control of the dressing adjustment apparatus based on the detected difference of the static pressures is performed prior to the control of the dressing adjustment apparatus based on the detected temperature.

In the present invention, the opening and closing of the side wall inlet is controlled based on the detection of the pressure difference between the inside and the outside, and also based on the detection of the temperature. Therefore, at the start of the control, control based on detection of any one of the pressure difference and the temperature is performed first. However, in this configuration, the control based on the detection of the pressure difference is performed first. In short, air in the internal space is stirred, and after the temperature in the up and down direction is uniformly close, control of the dressing adjustment device based on temperature detection is performed.

Accordingly, it is sufficient that the temperature sensor for detecting the temperature for regulating the opening and closing of the side wall inserting opening is provided at a plurality of places in the air flow path from the side wall inserting opening to the exhaust opening, It is not necessary to provide a plurality of temperature sensors. On the other hand, when different temperatures are detected by a plurality of temperature sensors provided in the vertical direction in a state where the air is not sufficiently stirred and the temperature difference in the vertical direction is large, The control is considered to be complicated.

Therefore, according to this configuration, the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coop, can be reduced by simple control by the simple configuration, and the temperature difference in the vertical direction in which the cages are stacked .

The ventilation method according to the present invention, in addition to the above configuration,

The side wall inserting portion is divided into a plurality of portions in the longitudinal direction in which the cage rows extend, and the dressing adjusting device is made up of a plurality of units for adjusting opening and closing and opening of each of the divided side wall inserting holes. &Quot;

In this configuration, the sidewall entry openings are divided into a plurality of pieces in the longitudinal direction that substantially follows the direction of the air flow in the chicken coop, and the opening or closing of each divided sidewall entry opening is made differently can do. This makes it possible to adjust the inflow amount of the air from the sidewall entry port to be increased as the temperature becomes higher as the temperature of the chicken becomes warmer in the air flow, for example. Therefore, control for reducing the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, can be easily performed.

In addition, when the entire length of the side wall inserting opening is made equal to the total length of the cage opening and the positions of both ends of each of the side wall inserting opening and the cage opening are matched, fresh air introduced from the side wall inserting opening can reliably ventilate the space around all of the chickens .

As described above, according to the present invention, it is possible to reduce the temperature difference in the flow path from the upstream to the downstream, which is the air flow in the chicken coaster, and to reduce the temperature difference even in the vertical direction in which the cages are stacked. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a chicken coaster using a ventilation method according to one embodiment of the present invention. Fig.
2 is a perspective view of the chicken cooperator of Fig.
Fig. 3 is a sectional view taken along the line XX in Fig. 2 (the illustration of the exhaust fan is omitted).
Fig. 4 is an enlarged view of the area A in Fig.

Hereinafter, a ventilating method (a replacing method) according to one embodiment of the present invention and a chicken coaster 1 using the ventilating method will be described with reference to Figs. 1 to 4. Fig.

First, the configuration of the chicken coop 1 will be described. The chicken coop 1 is a substantially rectangular parallelepiped building surrounded by four walls and houses therein a cage row 90 in which a cage is continuously provided in one direction. The chicken coop 1 has an exhaust port 11b formed in one wall 11 of the walls 11 and 12 orthogonal to the cage column 90 and an exhaust fan 11b attached to the exhaust port 11b An inlet port 12b formed in a wall 12 opposed to a wall 11 formed with an exhaust port 11b and a pair of side walls 12b formed in parallel with the cage column 90, A side wall inlet 20 formed at an upper portion of each of the side walls 10 and an entrance adjustment device 30 for opening and closing the side wall entrance 20, Respectively.

More specifically, the chicken coops 1 are a pair of coils, and the length in the direction parallel to the crest 80 on which the roof 81 intersects is several tens of meters to several hundreds of meters, and a direction perpendicular to the crest 80 Width direction ") is about several meters to about 40 meters in length, and is shorter than the length in the direction parallel to the crest 80, and is elongated. Although the cage column 90 exemplifies a plurality of cases in this embodiment (three columns are exemplified in Figs. 2 and 3), there may be a case where the cage column 90 is a single column. The longitudinal direction in which the cage row 90 extends is the direction in which the crest 80 extends. That is, the walls 11 and 12, in which the exhaust port 11b and the inlet port 12b are formed, are a pair of a front surface and a rear surface. The exhaust port 11b and the inlet port 12b are each formed with a large area of at least one half of the total wall area. The inlet port 12b is covered with a cooling pad 12p formed of an absorbent rich species or nonwoven fabric. On the other hand, a large number of exhaust fans 11f are attached to the exhaust port 11b in the longitudinal and lateral directions.

The side wall inlet port 20 is formed by setting a gap between the top of the side wall 10 and the roof 81 in each of the pair of side walls 10. More specifically, the space under the roof is partitioned into a partition plate 82 suspended from the roof 81 along the side wall 10 inwardly from the side wall 10, A side wall inlet 20 is opened between the vicinity of the lower end of the partition plate 82 and the vicinity of the upper end of the side wall 10. [

The sidewall entry port 20 has a total length equal to that of the cage column 90 and has both end portions thereof aligned with both ends of the cage column 90 and is divided into a plurality of portions in the longitudinal direction. The dressing adjustment device 30 is composed of a plurality of units for adjusting opening and closing degrees for each of the divided side wall inserting openings 20. 1 and 2 illustrate a case where the side wall inserting holes 20 are divided into three. The sidewall inlet port 20a closest to the inlet port 12b, the sidewall inlet port 20b at the center, and the sidewall inlet port 20b closest to the exhaust port 11b, (20c) ", and when there is no particular need to distinguish them, they are generically referred to as " sidewall entry ports 20 ".

The state that the total length of the side wall inserting port 20 is equal to the total length of the cage column 90 and the positions of the both ends thereof are formed to "both ends of the cage column 90" It is not practical to limit the positions of the both end portions to be completely aligned with each other. Here, the case where the entire length of the long side is within the range of "the total length of the shorter side + 10%" when the center position in the longitudinal direction of each of the sidewall entry port 20 and the cage column 90 is matched .

A plurality of units of the dressing adjustment device 30 are the same in structure and each has a flat plate shape and includes a plurality of rotating plates 31 that are open at one side capable of rotating around a horizontal axis, And a rotating plate driving mechanism that rotates at an angle. A plurality of rotary plates 31 rotated by one unit in the dressing adjustment device 30 are disposed adjacent to the vicinity of the upper end of the side wall 10 and the entire length thereof is formed by dividing the side wall inlet ports 20a and 20b , 20c, respectively.

The rotating plate drive mechanism is provided with a winch (not shown in any figure) driven by a motor, a main wire 32, and a plurality of sub-wires 33. The other end of the main wire 32 is fixed to the bracket (not shown) protruding from the side wall 10 through a spring so that one end of the main wire 32 is wound on the winch, 10 so as to be tensioned. 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 rotary plates 31 belonging to the same unit of the dressing adjustment device 30 and the other end is attached to the main wire 32 ). Each sub-wire 33 is wound around a first pulley 34 and a second pulley 35 attached to a supporting plate 39 protruding from the side wall 10 for each of the rotating plates 31, And the rotary plate 31, which tries to rotate in the downward direction by its own weight, is pulled obliquely from above.

Closing and opening by the rotary plate 31 can be adjusted for each of the side wall inlet ports 20 divided by the rotary plate driving mechanism having such a configuration. Concretely, when the main wire 32 is wound by a winch by driving the motor, the rotary plate 31 is pulled by the auxiliary wire 33 connected to the main wire 32 and rotated upward to open the opening of the side wall inlet 20 . On the contrary, when the main wire 32 is loosened with the winch, the auxiliary wire 33 is loosened and the rotating plate 31 is rotated downward by its own weight, so that the opening of the side wall inlet 20 becomes large. 1, a plurality of rotary plates 31, which are adjusted by simultaneously rotating one opening and closing of the divided sidewall entry ports 20 at the same angle at the same time, are shown as a single rotary plate 31, As shown in Fig.

In addition to the above configuration, the chicken coop 1 has a plurality of temperature sensors 50 for measuring the temperature of the internal space. The temperature sensor 50 is provided at least in the number of the divided side wall inserting openings 20 and attached to each of the divided side wall inserting openings 20. The chicken coaster 1 also includes a differential pressure meter 40 for detecting the difference between the static pressure of the internal space and the static pressure of the external space. The differential pressure gauge 40 is installed in the internal space of the chicken coop 1 and the low pressure side pipe member 41 is disposed in the internal space and the high pressure side pipe member 42 is drawn out into the external space .

Next, a ventilation method used by the chicken coop 1 having the above-described configuration will be described. The ventilation method is a method in which the exhaust fan 11f is operated and exhausted from the exhaust port 11b so that the internal space is made negative pressure and the exhaust gas is discharged from the outside space through at least one (one side) of the side wall inlet port 20 and the inlet port 12b. Lt; / RTI > In addition, the present ventilating method has a first mode in which air is sucked from the outer space only through the sidewall inlet 20, a second mode in which only the inlet 12b is operated, and a second mode in which the sidewall inlet 20 And a third mode through both of the inlet port 12a and the inlet port 12b.

Further, in the first mode and the third mode for receiving air 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 difference in detected static pressure is within a predetermined range Closing and opening of the side wall inserting opening 20 by the dressing adjustment device 30 and detecting the temperature at a plurality of places in the internal space and controlling the opening and closing of the side wall inserting opening 20 so that the detected temperature is within a predetermined range, And controls the opening and closing of the side wall inlet opening (20) by the adjusting device (30).

For example, when the outside temperature such as summer is high, air is taken in through the inlet 12b (second mode). As a result, air can be circulated between the facing walls 11 and 12 at a high speed, and ventilation can be performed while cooling the inner space with the outside air at a temperature lower than the temperature in the chicken storage space 1. [ At this time, by flowing water, dropping, and spraying (spraying) water onto the cooling pad 12p covering the inlet port 12b, the water passes through the cooling pad 12p, The temperature of the air can be lowered, and the internal space can be effectively cooled.

On the other hand, when the outside air temperature such as winter is low, when the outside air is received from the large-sized inlet port 12b and is flowed straight to the outlet port 11b, (On the upstream side) becomes too low. Thus, the inlet port 12b is closed and the outside air is received from the side wall inlet port 20 (first mode).

In the first mode, since the direction in which the air flows through the side wall inlet port 20 is different from the direction in which the air is discharged through the exhaust port 11b, the flow of air is slower than in the second mode. This makes it possible to prevent the inner space from being too cooled while the air is easily disturbed or tilted in the air flow so that the flow of air from the side wall inlet port 20 to the exhaust port 11b The temperature is liable to be uneven due to the position in the vertical direction and the position in the vertical direction.

Therefore, in the present embodiment, the pressure difference between the inside and outside of the chicken coop 1 is measured by the differential pressure gauge 40, and the dressing adjustment device 30 is controlled so that the difference is within a predetermined range, And the opening degree is adjusted.

Here, the " predetermined range " with respect to the difference in static pressure is experimentally determined beforehand for each chicken coop 1 as a condition for obtaining stirring action (stirring action) by the air introduced from the side wall inlet 20. For example, the distance between the side walls 10 is long (in other words, the length in the width direction of the chicken coel 1 is long), and the number of the cage rows 90 is large, It is necessary to reach the center cage row 90 in the width direction while maintaining the wind speed to some extent. Also, in the case where a plurality of cages are stacked, the air introduced from the side wall inlet 20 needs to reach the cage at the lowermost end while maintaining the wind speed to some extent. Therefore, by examining the relationship between the pressure difference between inside and outside of each chicken coaster, and the wind speed and arrival distance (arrival distance) of the air flowing in from the side wall inlet 20, The range of the pressure difference capable of sufficiently obtaining the stirring action is set.

Also, the faster the flow rate of the incoming air, the greater the effect of stirring the air in the internal space, but if the flow rate is too fast, it is not desirable for the chicken to stress the chicken. Therefore, the range of the pressure difference between the inside and the outside is set so that the stirring action by the air introduced from the side wall inlet 20 is "not too much".

The dressing adjuster 30 is controlled to rotate the rotary plate 31 such that the pressure difference between the inside and outside of the dresser 40 is within the set range. The pressure difference between inside and outside can be changed by the opening of the side wall inlet 20 even if the operating conditions of the exhaust fan 11f for forcibly discharging the air from the inside space to the outside space are the same. Specifically, when the rotary plate 31 is rotated in the closing direction to reduce the opening area of the side wall inlet port 20, the pressure difference between the inside and outside becomes large, and the flow velocity of the incoming air is increased. In addition, The distance to reach is longer. On the other hand, when the rotary plate 31 is rotated in the opening direction to enlarge the opening area of the side wall inlet 20, the pressure difference between the inside and outside becomes small so that the flow rate of the air introduced from the side wall inlet 20 is slow, The distance to reach is shortened.

When the operating condition of the exhaust fan 11f is changed in accordance with the variation of the outside air temperature, the pressure difference between the inside and outside of the exhaust fan 11f also changes. Therefore, So as to rotate the rotary plate 31. For example, when the number of the fans to be operated among the plurality of exhaust fans 11f is reduced in accordance with the decrease in the outside air temperature, the pressure difference between the inside and the outside is lowered. Therefore, Direction. On the other hand, when the number of the exhaust fans 11f to be operated is increased as the outside air temperature rises, the pressure difference between inside and outside increases, so that the rotating plate 31 is rotated in the opening direction when it deviates from a predetermined range.

The control when the pressure difference between the inside and outside is adjusted to a predetermined range is the same as the rotating plate 31 belonging to the unit of the dressing adjusting device 30 which opens and closes the different side wall inserting holes 20a, 20b and 20c at the same time Rotate the angle.

In this way, by adjusting the inner and outer pressure differences to be within a predetermined range, it is possible to make the state that the air in the inner space is entirely stirred by the air introduced through the side wall inlet 20. Then, when the pressure difference between the inside and the outside is stabilized within a predetermined range, and the air in the internal space is in a state of being well stirred, then, based on the detection of the temperature by the temperature sensor 50, Opening and closing of the sidewall entry port 20 are adjusted so that the temperature is within a predetermined range.

Here, the " predetermined range " with respect to the temperature can be determined by the size of the chicken coop 1, the length of air circulated in the chicken coop 1, and the type of chickens (chickens or spermatozoa) . For example, the size of the allowable range of the temperature can be changed according to the length of the air circulating in the chicken coop. In case of breeding chickens with low tolerance to temperature changes such as chickens, the allowable temperature range can be set small.

Since the air circulating in the henhouse (1) is warmed by the body temperature of the chicken, the temperature inevitably becomes higher downstream. Therefore, it is not practical to set the same temperature to the target value regardless of the position in the internal space. For example, when the target temperature range is set to the "average temperature ± α ° C." with respect to the temperature in the entire inner space, for example, in the vicinity of the side wall inlet port 20a closest to the inlet port 12b The target value of the temperature to be detected is set to "average temperature-α ° C.", the target value of the temperature detected in the vicinity of the central sidewall inlet port 20b is set to the "average temperature", and the sidewall entry port Quot; average temperature + alpha C ", and the target value can be set higher in the downstream direction.

In many cases, immediately after the start of the temperature adjustment, the temperature detected in the vicinity of the side wall inlet 20a is substantially equal to the outside air temperature and is lower than the target value "average temperature -.alpha. Therefore, in order to increase the temperature by reducing the suction amount of the outside air, the side plate inlet 20a rotates the rotary plate 31 in the closing direction. On the other hand, the temperature detected in the vicinity of the side wall inlet 20c is higher than the target value " average temperature + alpha C " Therefore, in order to increase the suction amount of the outside air to lower the temperature, the side plate inlet 20c rotates the rotary plate 31 in the opening direction. The temperature detected in the vicinity of the side wall inlet port 20b is usually close to the target average value, so that the rotary plate 31 hardly moves at the side wall inlet port 20b.

The detected temperature is received from the temperature sensor 50 at predetermined time intervals and the control of the rotary plate 31 by the dressing adjustment device 30 as described above is repeated so that the temperatures detected at a plurality of places are gradually increased to the target value And is stabilized within a set allowable range. Thereafter, the control of the dressing adjustment device 30 based on the detection of the inner and outer pressure differences and the control of the dressing adjustment device 30 based on the detection of the temperature are alternately performed at a predetermined interval.

Here, for controlling the dressing adjustment device 30, a general-purpose computer having a main memory, an auxiliary memory, and a processor can be used. A control program for rotating the rotary 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 memory and the processor performs processing according to the control program.

When the outside air temperature is intermediate, such as a period between the summer and winter, both the inlet port 12b for receiving outside air and the side wall inlet port 20 are used in combination (third mode). In the first mode and the third mode in which air is received through the side wall inlet 20, all of the plurality of divided side wall inlet holes 20 need not be opened, and one or more side wall inlet holes 20 It may be closed by the rotary plate 31. [

As described above, according to the ventilation method of the present embodiment, the opening and closing of the side wall inlet port 20 is adjusted based on the detection of the pressure difference between the inside and the outside, so that the air flowing through the side wall inlet port 20, Thereby making it possible to form a state in which the whole is stirred. Therefore, in combination with the control based on the detection of the temperature in a plurality of places of the internal space and the control based on the detection of the pressure difference between the inside and outside in the adjustment of the opening and closing of the side wall inlet opening 20, It is possible to reduce the temperature difference in the flow path from the upstream side to the downstream side and to decrease the temperature difference even in the vertical direction in which the cages are stacked.

In the present embodiment, control is performed based on the detection of the pressure difference between the inside and outside of the shed prior to the control based on the detection of the temperature at the start of the opening and closing of the sidewall inlet 20 and opening of the opening. Thereby, after the air in the internal space is sufficiently stirred and the temperature in the up-and-down direction is uniformly close, control based on the detection of the temperature is performed. Therefore, by simply controlling the number of the temperature sensors 50, the temperature difference in the upstream and downstream of the flow of air in the chicken storage 1 and the temperature difference in the vertical direction can be reduced .

Further, in the present embodiment, the side wall inserting opening 20 is divided into a plurality of lengthwise directions, so that the opening and closing thereof and the opening thereof can be separately adjusted. This makes it easy to control the temperature of the inner space of the chicken coop being warmed by the body temperature of the chicken to become high in the downstream direction within a predetermined range.

In addition, in the present embodiment, the inflow mechanism of the air from the external space is changed to any one of the first mode to the third mode, so that appropriate ventilation can be performed by always matching the fluctuation of the season or the outside temperature.

While the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be noted that various changes and modifications may be made without departing from the scope of the present invention.

For example, in the above description, the dressing adjustment device 30 is configured to open and close the side wall inlet opening 20 by opening the side wall inlet opening 20 by rotation of the rotary plate 31. However, However, the present invention is not limited to this configuration, and it is possible to employ a configuration in which it is opened and closed by rotation, or a configuration in which it is slid in one direction to open and close.

In the above example, the sidewall entry port 20 is divided into three pieces in the longitudinal direction. However, if the number of divided pieces of the sidewall entry port is set to be longer in the longitudinal direction, Can be made more precise.

In the above example, the inlet port 12b is covered with the cooling pad 12p. However, in the chicken port in a region where the temperature of the summer is not so high, the inlet port 12b may not be covered with the cooling pad. Alternatively, the cooling pad may be replaced with a shielding ventilation member that does not allow light to pass therethrough but allows air to pass naturally through the opening 12b. The light shielding ventilation member is one in which a plurality of thin plate members are fixed in a frame with an interval therebetween and the thin plate member is curved, bent or inclined so that light does not pass through but air passes through the ventilation space Is formed.

Claims (3)

An exhaust port formed 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 sidewall inlet port formed in at least one upper portion of a sidewall parallel to the cage row,
A mouthpiece adjusting device for opening and closing the side wall mouthpiece
In the chicken coop,
The exhaust fan is operated to discharge air from the exhaust port to make the internal space negative pressure to receive air from the external space through the side wall entry port,
Closing and opening degree of the side wall inserting opening by the dressing adjuster so that the difference between the static pressure of the inside space and the static pressure of the outside space is detected and the difference of the detected static pressure is within a predetermined range, And, at the same time,
The temperature is detected at a plurality of places in the internal space and the opening and closing of the side wall entrance opening by the dressing adjustment device is controlled so that the detected temperature is within a predetermined range
(Ventilation method).
The method according to claim 1,
The control of the dressing adjustment device based on the detected difference in static pressure is performed prior to the control of the dressing adjustment device based on the detected temperature
Wherein the ventilation of the chicken coop.
The method according to claim 1,
The side wall inserting portion is divided into a plurality of portions in the longitudinal direction in which the cage row extends,
Wherein the dressing adjustment device comprises a plurality of units for adjusting opening and closing and opening degree for each of the divided side wall entrance holes
Wherein the ventilation of the chicken coop.

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