JP2019010086A - Barn - Google Patents

Abstract

To solve problems about a barn in which cattle are tough against the cold, however, when building a barn in a cold district, freezing of a barn work device provided in the barn has to be solved.SOLUTION: One side wall has pull side blowers, and the other side wall has push side blowers. A pair of end walls have an air fan respectively. A barn comprises: an ambient temperature thermometer; an inside air thermometer; a shutter provided on outside of the push side blowers; and a controller connected to the pull side blowers, the push side blowers, the air fan and the shutter and having a timer. The controller causes the pull side blowers, push side blowers, air fan and shutter to perform an operation of each of maximum operation processing, inside air control processing, inside air control processing with day and night, and winter mode processing, based on inside air temperature and ambient air temperature.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a barn that performs push-pull ventilation in a closed barn, and particularly relates to a barn used in cold regions.

  Patent Document 1 discloses a tunnel ventilation type barn structure. Here, both end walls including an opening and closing part, side walls, an outside air inflow path that always allows outside air to flow into one end wall of the barn body closed by the roof, and an air discharge device provided on the other end wall An air circulation device that circulates a part of air in a barn is disclosed.

  In other words, the barn of Patent Document 1 is provided with an air discharge device on one short side of a rectangular barn and an outside air inflow passage on the other short side, so that air flows in the length direction of the rectangle. is there. Note that the air circulation device is intended to prevent the temperature inside the barn from falling too much by circulating a part of the air in the barn during the cold winter season, instead of ventilating all the air inside the barn.

  Moreover, an air exhaust device increases / decreases the operating number of the some exhaust fan for air exhaust based on the temperature detection apparatus in a cowshed. That is, the wind speed in the barn is changed based on the temperature in the barn.

  There are some proposals for controlling the wind based on the temperature in the barn where the livestock such as cattle, pigs and chickens are kept without being limited to the barn. Patent Document 2 discloses a control device in which a plurality of air blowers are arranged in a barn and the air volume is individually set based on the temperature at the place where the air blower is installed.

  Patent Document 3 discloses that a push-pull type fan is disposed so as to face the long side of a rectangular barn to perform ventilation and temperature adjustment in the barn.

Utility Model Registration No. 3110491 JP 2007-23912 A Japanese Patent Laying-Open No. 2015-204766

Measures against heat stress by detecting heat stress to prevent decline in milk yield and fertility rate JFC Japan Finance Corporation Agriculture, Forestry and Fisheries Project Technology Window 1910 H25.4.25 URL (http://www.jfc.go.jp/n/finance/keiei/pdf/1910.pdf)

  Conventional barns are mainly equipped with an open-type barn that has ventilation fans on the ceiling and blows forward. The open-type barn is not adequately ventilated because the number, arrangement, and volume of ventilation fans are not appropriate. There was a problem that the environment in the barn was not good, such as generation of temperature irregularities and retention of ammonia gas. Milking of these problems, especially in winter in cold regions, freezing of the automatic milking machine in the barn, preventing cold to the cows and preventing the heat of the cows in the summer, the cows feel stress The problem of a decrease in volume has not yet been solved.

  Patent Documents 1 to 3 attempt to raise cows comfortably by causing an air flow in a barn as a countermeasure against heat. However, in cold regions, it is necessary to take measures against the cold in winter as well as the heat in summer. That is, Patent Documents 1 to 3 cannot be said to be sufficient for winter countermeasures. Cattle themselves are resistant to cold and weak against heat, so heating in barns is rarely regarded as a problem. However, particularly in the barns where automation has been promoted in recent years, there has been a risk that the operation of the barn itself will stop due to the freezing of the automation machine before the cattle receives a cold shock.

  In particular, in an automated barn, a large barn is operated by a small number of people, and if an automated feeding machine or milking machine stops operating, it takes time to recover. This situation not only significantly reduces milk production, but can even lead to the death of the cow itself.

  In addition, when a large number of blowers with shutters are attached to the side walls, when all the shutters are opened and closed all at once, a relatively loud sound reverberates in the barn and impacts the sleeping cow. In view of such a situation, the present invention provides a closed barn that is particularly suitable for cold regions.

  In order to solve the above problems, the barn according to the present invention has a structure in which a fan for push-pull ventilation is provided on the side wall of the barn, and the fan is provided with a shutter that opens and closes based on the outside air temperature. .

  That is, the closed type barn of the present invention has a ventilation fan for supplying and exhausting air on the wall of the barn, and automatically controlling the ventilation fan using thermometers inside and outside the barn, so that the temperature, humidity, It keeps the wind speed uniform and realizes an optimal breeding environment.

More specifically, the barn according to the present invention is:
A rectangular floor;
A pair of side walls provided on the long side of the floor surface;
A pair of end walls provided on the short side of the floor;
An architectural body having a roof disposed above the side wall and the end wall;
On the first side walls of the pair of side walls, a pull-side blower is juxtaposed in the discharge direction at intervals equal to or less than the diameter of the fan of the adjacent blower over the length of the end wall,
On the second side wall of the pair of side walls, a push-side fan is disposed in a suction direction at positions opposite to the fans on both ends of the pull-side fan, and an openable / closable through hole is provided between the push-side fans. Provided,
A ventilation fan is provided on the pair of end walls,
An outside temperature thermometer for measuring outside temperature outside the building;
An inside air thermometer for measuring the inside air temperature inside the building,
A shutter provided on the outside of the building body of the pull-side fan and the push-side fan;
In-building work device that cannot operate when frozen inside the building,
Connected to the pull-side blower, the push-side blower, the ventilation fan and the shutter, and having a controller having a timer,
The controller receives an outside air temperature measured by the outside air thermometer and an inside air temperature signal measured by the inside air thermometer,
If the received inside temperature rises above the stress temperature of the cow,
The received inside air temperature is less than the stress temperature of the cow,
When the received outside air temperature is equal to or higher than a predetermined outside air temperature (Tot2),
When the received outside air temperature is equal to or higher than a predetermined outside air temperature (Tot1), the inside / outside air control process with day and night,
A winter mode process is performed when the received outside air temperature is lower than a predetermined outside air temperature (Tot1).

  In the closed type barn of the present invention, a suitable arrangement of ventilation fans was investigated using the simulation technique for the environment inside the barn. Therefore, the entire interior of the barn can be ventilated at a uniform wind speed, and an optimum environment for cattle can be realized. For biosecurity, activities such as flies and flies can be suppressed by ventilation throughout the barn. In addition, because it is a closed barn, it also has the effect of suppressing the invasion of wild birds.

  Since the livestock barn according to the present invention performs push-pull ventilation between the side walls provided on the opposing long sides of the rectangle, it is possible to generate a uniform air flow that can be said to be a uniform flow. A comfortable air flow can be received. On the other hand, since the shutter of the fan is closed in winter, it becomes a closed type barn, and the temperature in the barn is not lowered as much as the outside air, so that the in-house working device in the barn can be prevented from freezing.

  Further, the barn according to the present invention has ventilation fans not only on the push-pull ventilation fan arranged on the side wall provided on the long side portion but also on the end wall provided on the short side portion, If the pull ventilation fan is stopped, ventilate between the opposite end walls.

  Further, when push-pull ventilation is used, the uniform air flow generated between the side walls of the barn can eliminate the accumulation of ammonia and carbon dioxide in the barn. Furthermore, the uniform air flow prevents pests such as fly flies from staying in the barn. As a result, the stinging flies can be reduced and the stress on the cows can be reduced. In addition, since the barn is closed, it is possible to prevent the invasion of harmful animals such as birds.

  With these effects, the conception rate can be improved even in the summer, the milk yield can be prevented from decreasing, and the in-house work devices (automatic milking machines and mechanical feeders) can be prevented from freezing in the winter. .

1 is an external perspective view of a barn (cattle barn) according to the present invention. It is a figure showing the end wall of the short side of a barn. It is the side wall (pull side wall) of the long side of a barn, and its enlarged view. It is a figure which shows an example of the air blower used for a barn. It is a figure which shows the air blower and shutter used for a barn. It is the side wall (push side side wall) of the long side of a barn, and its enlarged view. It is a top view which illustrates arrangement | positioning of a push side air blower and a pull side air blower. It is a top view which illustrates the form which uses a part of barn. It is a top view which shows the other form of a barn. It is a figure which shows the connection relation of a control system. It is a figure which shows a main flow. It is a figure which shows the flow of an initial process. It is a figure which shows the flow of a wind process. It is a figure which shows the flow of maximum driving | operation. It is a figure which shows the flow of inside air control. It is a figure which shows the flow of the inside air control with day and night. It is a figure which shows the flow of temperature control. It is a figure which shows the flow of winter mode. It is a figure explaining a motion of a shutter.

  Hereinafter, the barn according to the present invention will be described with reference to the drawings. In addition, the following description is description of one Embodiment of the barn which concerns on this invention, and is not limited to this. The following embodiments can be modified without departing from the spirit of the present invention. In the following description, the barn will be described as a cowshed. However, the barn of the present invention is not particularly limited to a cowshed, and can also be applied to a poultry house and a pig house.

  FIG. 1 shows a perspective view of a barn (slaughterhouse) 1 according to the present invention. Moreover, in FIG. 2, the side view of the short side direction of the barn 1 is shown. FIG. 3 shows a side view (hereinafter referred to as “pull-side side wall”) in which a later-described pull-side fan is provided in the barn 1 and a partially enlarged view thereof. FIG. 6 shows a side view (hereinafter referred to as “push-side side wall”) provided with a push-side fan, which will be described later, in the barn 1 and a partially enlarged view thereof.

  Please refer to FIG. The barn 1 includes a rectangular floor surface 10, end walls 12 a and 12 b (either or both are also referred to as “end wall 12”) provided on the short side of the floor surface 10, and a long side of the floor surface 10. A pull side wall 14 a and a push side wall 14 b (both are collectively referred to as “side wall 14”) provided on the side, and a roof 16 are formed. In addition, it may be said that the roof 16, the side wall 14, and the end wall 12 constitute a building. In the following description, the “longitudinal direction of the barn 1” refers to the long side direction of the floor surface 10 and the “width direction of the barn 1” refers to the short side direction of the floor surface 10.

  The floor surface 10 has a rectangular shape. However, the square is not excluded. There may be some distortions due to the circumstances of the land where the barn is constructed. Here, “distortion” includes a situation in which each side is not a complete straight line, or the angle forming each side deviates from 90 degrees. However, since the cowshed 1 ensures comfort for the cow by generating a uniform air flow in the house, it is not preferable that the cowshed 1 be distorted to the extent that the uniform airflow is hindered. .

  The finish of the floor surface 10 is not particularly limited, and a slight embankment may be provided. However, it is not preferable that the embankment is uneven enough to inhibit the uniform air flow described later.

  The side wall 14 is provided in the long side which the rectangular floor surface 10 opposes. One side wall is the pull side wall 14a and the other side wall is the push side wall 14b. Each side wall 14 is provided with a blower and a through-hole described later.

  With reference to FIG. 2, end walls 12 a and 12 b are provided on opposing short sides of rectangular floor surface 10. The doors 13a and 13b are provided here. The open / close doors 13a and 13b are used for the entry / exit of cows to / from the barn 1 and the entry / exit of work vehicles or workers. Normally, it is desirable to close the open / close doors 13a and 13b. This is because if there are openings in the end walls 12a and 12b, the uniform air flow generated in the barn 1 may be disturbed. Reference numeral 16 h represents the eave height, which is the height of the side wall 14.

  Further, the end wall 12a and the end wall 12b are provided with a ventilation fan 22a and a ventilation fan 22b (referred to as “ventilation fan 22” when instructing both together). The ventilation fan 22 is preferably a hood. The ventilation fan 22 is used when push-pull ventilation cannot be used. Specifically, when the outside air temperature falls below a predetermined temperature, the barn 1 according to the present invention stops the blower 20 provided on the side wall 14 in order to prevent cold air from entering, and the shutter 21 (see FIG. 5) is closed. In such a case, ventilation is performed only with the ventilation fan 22. In FIG. 2, three ventilation fans 22 a and three ventilation fans 22 b are illustrated, but the number of ventilation fans 22 is not limited to three.

  Referring again to FIG. 1, the roof 16 is a part that forms a space for creating a uniform air flow in the barn 1, and therefore has a ceiling flatness that does not hinder the air flow. desirable. When the roof 16 directly becomes a ceiling, it is desirable that the roof 16 is nearly flat. The shape is not particularly limited, and may be freely used such as a gable roof or a dormitory roof. A gable roof having a slope 16 of 1 inch (5.7 degrees) can be suitably used. In cold regions, a two-dimensional gradient (11.4 degrees) may be used from the viewpoint of preventing snow accumulation and the strength of the roof 16. Even if the slope is more than this, it is possible to make the air flow uniform without forming a ceiling by providing a baffle called a baffle in the barn 1.

  3A shows a front view of the pull side wall 14a, and FIG. 3B shows a partially enlarged view. A through hole 14ah is formed in the pull side wall 14a. The through-hole 14ah may be one through-hole that spreads over the side wall, or a plurality of through-holes may be provided. A pull-side blower 20a, which will be described later, is installed in the through hole 14ah. Further, the through hole 14ah may be formed after forming the pull side wall 14a or the wall member (board-like material forming the side wall), or may be provided in combination with a wall member having a concave cut. It may be a hole in the pulled side wall 14a. In FIG. 3B, the through hole 14ah is a generic term for the through hole 14ah1 and the through hole 14ah2.

  A pull-side blower 20a is installed in a through hole 14ah provided in the pull-side side wall 14a. The pull side blower 20a disposed on the pull side wall 14a is a blower that allows air to flow from the inside of the barn 1 to the outside. You may call this the pull side air blower 20a. As for arrangement | positioning of the pull side air blower 20a, it is desirable to arrange | position so that adjacent pull side air blowers 20a may become equal intervals. Moreover, it is desirable that the interval between adjacent pull-side blowers 20a is a distance within the diameter of the fan to be used.

  This is because, in order to create a uniform air flow, if the interval between adjacent pull-side blowers 20a is too large, a space in which air does not flow is created. However, as will be described later, an aspect capable of producing a uniform air flow is not excluded even if the above conditions are not satisfied.

  FIG. 4 shows an example of one blower 20. 4A is a side view and FIG. 4B is a plan view. The blower 20 has a size of 1120 mm × 1120 mm, and both the width 20 w and the height 20 h have the same dimensions. The fan diameter 20d has a size of 1000 mm. Of course, it is not limited to this size.

  On the front surface 20f and the rear surface 20r of the blower 20, blade guards made of wire are provided. Air enters from the rear surface 20r and blows out from the front surface 20f. The blower 20 illustrated in FIG. 4 shows the type of blower 20 in which the suction side and the blowout side are determined. However, it is more preferable that the blower 20 is a type that can make both surfaces on the suction side depending on the rotation direction of the fan.

  FIG. 5 shows a state in which the blower 20 is provided with the shutter 21. The blower 20 used in the barn 1 according to the present invention is provided with a shutter 21. FIG. 5A shows a shutter 21 installed on the pull-side fan 20a, and FIG. 5B shows a shutter 21 installed on the push-side fan 20b.

  All the shutters 21 open toward the outside of the barn 1. The opening and closing of the shutter 21 is performed by the drive motor 21m according to an instruction from the controller 50 described later. When the shutter 21 is opened, it is desirable that the shutter 21 is locked and does not return easily (for example, an air damper is attached to the opening / closing mechanism member of the shutter 21). This is because when the shutter 21 is suddenly closed by a strong wind, the impact sound at that time gives stress to the cow.

  In the barn 1 according to the present invention, the shutter 21 is not limited to the one shown in FIG. 5, but has a shape like a hoisting curtain or a curtain that slides to the left or right or one side. There may be. Further, the shutter 21 is not attached to each blower 20 but may be a large one that opens and closes a plurality at a time.

  Referring to FIG. 3 again, the pull side blower 20a is disposed on the entire surface of the pull side wall 14a. In FIG. 3, through holes 14ah1 and 14ah2 are provided close to the pull side wall 14a in the height direction, and the pull side blower 20a is installed in each of the through holes 14ah1 and 14ah2. That is, the pull-side blower 20a is arranged in two stages in the height direction.

  Looking at the longitudinal direction of the barn 1, there are a narrow portion (interval) 15a and a wide portion (interval) 15b in the interval between the through holes 14ah1, 14ah2. The wide portion 15b is a place where a column of the pull side wall 14a is provided. It is desirable that both the narrow portion 15a and the wide portion 15b are installed at a narrower interval than the diameter 20d of the fan of the pull-side fan 20a (see FIG. 4B). In addition, the space | interval of the adjacent pull side air blower 20a here means the distance from which the front-end | tips of the fan of the adjacent pull side air blower 20a become the shortest.

  Further, at both ends of the pull-side side wall 14a, the distance 15c from the ends 14at1 and 14at2 to the first pull-side fan 20a is arranged at a shorter interval than the diameter 20d of the fan of the pull-side fan 20a. However, it is a case where it is used as the barn 1 from end to end of the pull side wall 14a, and when an additional facility space such as a garage or stocker is additionally provided in the barn 1, the first pull side from the ends 14at1 and 14at2 The distance 15c to the blower 20a may be longer than the diameter 20d of the fan.

  Also, when the pull-side blowers 20a are stacked in the height direction, the distance between the pull-side blowers 20a is arranged at an interval shorter than the fan diameter 20d. In addition, you may arrange | position the pull side air blower 20a only in 1 step | paragraph. This is because a uniform air flow from the floor surface 10 to the height of the head of the cow is sufficient so that a fan with a fan diameter 20d of about 2 m may be one stage. Further, the pull-side blower 20a does not exclude the arrangement of three or more stages.

  6A and 6B show the entire surface of the push side wall 14b, and FIG. 6C shows a partially enlarged view. A through-hole 14bh2 is formed in the push side wall 14b, and the push side blower 20b is disposed. Unlike the pull side wall 14a, the push side blower 20b is arranged at a wide interval. However, the push-side blower 20bt1 and the push-side blower 20bt2 are arranged at portions corresponding to the pull-side blower 20a at both ends of the pull-side blower 20a arranged on the pull-side side wall 14a.

  As shown in Patent Document 3, the push-side blower 20b (the push-side blower 20bt1 and the push-side blower 20bt2) is arranged at a position corresponding to the pull-side blower 20a at both ends arranged on the pull-side side wall 14a. This is because a uniform wind flow can be created in the barn 1.

  Accordingly, the push-side blower 20b is arranged in such a number that two machines arranged at positions corresponding to the positions of both ends of the pull-side fan 20a and a number that can be arranged at almost equal intervals between the two machines. Therefore, it is desirable to arrange two or more, preferably three or more push-side blowers 20b on the push-side side wall 14b. Of course, the maximum number is the same as the number of the pull side blowers 20a arranged on the pull side wall 14a. However, even if it is less than the number of the pull side blowers 20a, a uniform wind flow can be generated in the barn 1.

  In addition, the push side blower 20b arrange | positioned at the push side side wall 14b is a blower which flows air toward the inside of the barn 1 from the outside.

  The push-side blower 20b is disposed so as to be movable up and down at least over a distance of a fan diameter of 20d or more. FIG. 6C shows a state where the through holes 14bh2 that can be arranged in the vertical direction for two push-side fans 20b are formed, and one push-side fan 20b is arranged there. The push-side blower 20b is provided so as to be movable in the height direction of the push-side side wall 14b along the through hole 14bh2 by a mechanism that is lifted from above or pushed up from below.

  The case where the push-side fan 20b is on the lower side is said to be in the lower position, and the case where it is on the upper side is said to be in the upper position. In addition, it does not exclude that it exists in the middle position of an upper position and a lower position.

  That is, only one push-side blower 20b is installed at one installation location. Moreover, an opening is formed on the upper side or the lower side of the push-side blower 20b. In FIG. 6C, the current push-side blower 20b is disposed at the lower position as indicated by the solid line, and can be lifted to the upper position as indicated by the dotted line. Moreover, Fig.6 (a) shows a mode that all the push side air blowers 20b are arrange | positioned in the upper position, and FIG.6 (b) shows all the push side air blowers 20b being arrange | positioned in the lower position.

  Moreover, the push side air blower 20b may be arrange | positioned so that a movement is possible along the push side wall 14b (in the longitudinal direction of the barn 1). When partially using the barn 1, the push-side fan 20 b is arranged only in the area to be used in the barn 1 and is used together with the pull-side fan 20 a that can cover the area. A uniform wind can be generated only in the region.

  In addition, even if the push-side blower 20b is arranged so as to be movable along the push-side side wall 14b, the push-side blower 20b is arranged so that an interval (through hole) having a diameter of 20d or more is provided between the push-side blowers 20b.

  Further, it is not excluded to dispose two push-side blowers 20b above and below in the through hole 14bh2. Further, the through holes (through holes 14bh1 and 14bh2) formed in the push side wall 14b are blocked in winter. This is to prevent the outside air from entering the barn 1 during the winter so that the temperature in the barn 1 does not drop. For this blockage, a vinyl blocking curtain, a shutter, or the like can be used. Moreover, you may make it perform sealing manually.

  FIG. 7 illustrates a plan view of the barn 1. The feeding area 60 is arranged in two rows in the central part of the barn 1. The feeding area 60 is an area where food is arranged. The bait may be placed directly on the floor 10 or may be placed in a bowl-shaped container. The feeding area 60 includes both states. Cows are kept between the side wall 14 and the feeding area 60. Rails 72 are provided between the feeding areas 60. A carrier 74 travels along the rail 72. The carrier 74 is loaded with food by a stocker 76 that stores the food, and is delivered to the food station 60. The carrier 74 is normally waiting in the garage 78.

  An automatic milking machine 80 may be disposed in the barn 1. Cows that have entered the automatic milking machine 80 are fully automatic from nipple washing to milking, and can detect mastitis cows by measuring the number of somatic milk milk and the electrical conductivity of the milk. More specifically, if the sodium chloride component in the raw milk is increased, potential mastitis can be found, and the parcel with cows infected with mastitis can be found. Further, the automatic milking machine 80 can automatically separate raw milk that is not suitable for shipment, and can send only high-quality raw milk to the bulk cooler.

  The movement of the carrier 74 and the automatic milking machine 80 may be controlled by the controller 50 described later. Moreover, you may control by another controller. The stocker 76, the carrier 74, and the rail 72 constitute an automatic feeding device. Here, an example in which the automatic feeding device includes a stocker 76, a carrier 74, a rail 72, a controller, and the like has been described. However, the automatic feeding device is not limited to this, and may be an automatic feeding device according to the present invention as long as it feeds the food mechanically from the stocker 76 that stores the food to the feeding place 60. For example, the robot etc. which move in the barn 1 by stand-alone may be sufficient. The automatic feeding device and the automatic milking machine 80 are included in the in-house work device 70. These in-house work devices 70 become inoperable when frozen.

  Next, the example of arrangement | positioning of the push side air blower 20b is demonstrated. In the pull-side fan 20a, the push-side fan 20bt1 and the push-side fan 20bt2 are arranged at positions corresponding to the pull-side fan 20at1 and the pull-side fan 20at2 at both ends. The other push-side blower 20b3, push-side blower 20b4, and the like are arranged with a distance of a fan diameter of 20d or more.

  In addition, the length 19 of the longitudinal region in which the pull-side blower 20a is installed is the length in the direction of the side walls 14a and 14b (longitudinal direction) of the space in which the cow is inhabited. If this length 19 is longer than the width of the barn 1 (length 12w of the end walls 12a and 12b), it may be shorter than the length 14w of the pull side wall 14a and the push side wall 14b. In other words, the pull-side blower 20a may not be disposed on the entire surface of the pull-side side wall 14a with a fan diameter of 20d or less. This is because it is only necessary to generate a uniform air flow in the part where the cows live in the barn 1, and it is not necessary to arrange the blower 20 in the part where there is no cow.

  The end wall 12a and the end wall 12b are provided with a ventilation fan 22 (a ventilation fan 22a and a ventilation fan 22b). Moreover, the ventilation fan 24 may be provided between the end wall 12a and the end wall 12b. The blower fan 24 is a fan that creates a wind flow in the longitudinal direction of the barn 1. In FIG. 7, twelve blowing fans 24 (rectangles with vertical lines) are drawn, but the number of blowing fans 24 is not limited to this.

  In FIG. 8, it shows about arrangement | positioning in case the barn 1 is partially utilized. Here, the pull side blower 20ac to be operated is determined so as to cover the region to be used. In the figure, the pull-side blower 20ac in an operating state is shown by a square with a diagonal line.

  On the other hand, there are two push-side blowers 20b (push-side blower 20b3 and push-side blower 20b4 in the positions corresponding to the pull-side blower 20act1 and the pull-side blower 20act2 at both ends of the pull-side blower 20ac to be operated. Square). Further, air guiding means 12c1 and 12c2 (indicated by a one-dot chain line) parallel to the end wall 12 may be arranged so as to divide these regions. Specifically, a curtain can be suitably used.

  In addition, in FIG. 8, the state by which bait is supplied only to the part of the length 19 to be used for the bait hall 60 is shown by a pattern by dots.

  FIG. 9 shows another embodiment of the barn 1. In the barn 2, a management building 3 is arranged in the longitudinal direction. Since the livestock barn according to the present invention mainly ventilates in the width (end wall length 12 w) direction of the rectangular floor surface 10, the side wall 14 becomes long. Therefore, if the management building 3 is provided near the center of the barn 2, it can move in almost the same time regardless of which end wall 12 is moved. Therefore, when viewed as a whole, the barn 2 can breed cattle in two zones, zone A and zone B, with the management building 3 as a boundary.

  Even in such a structure, in at least one of the A zone and the B zone, if the length 19 of the portion where the pull-side blower 20a is continuously arranged is longer than the end wall length 12w, the present invention is applied. It may be said to be a livestock barn. Further, the push-side fan 20bt1 and the push-side fan 20bt2 are arranged to face the pull-side fan 20at1 and the pull-side fan 20at2 that are arranged at both ends of the portion where the pull-side fan 20a is continuously arranged. Yes.

  Moreover, even if it is a structure like a cowshed 2, the ventilation fan 22a and the ventilation fan 22b are arrange | positioned at the end wall 12a and the end wall 12b.

  In the configuration of FIG. 9, the area 3R in the cowshed 2 where the management building 3 is installed can be used as a utility zone in which the automatic milking machine 80 is arranged. Since the automatic milking machine 80 has many parts that handle moisture and is easily frozen, it is preferable to install the automatic milking machine 80 in the region 3R in the barn 2 that is not easily affected by the outside air temperature. In addition, since the cows line up with the automatic milking machine 80 themselves, a relatively wide space such as the area 3 </ b> R in the barn 2 is necessary. Region 3R can satisfy this requirement.

  Further, auxiliary ventilation fans 23 may be disposed on the side walls 14 on both sides of the management building 3. This is because the area 3R where the management building 3 is installed is ventilated. The auxiliary ventilation fan 23 creates an air flow in the width direction of the barn 2.

  FIG. 10 is a schematic view of a cross section of the barn 1 cut along a plane parallel to the end wall 12. The barn 2 has a similar system. The processing flow of the blower 20 and other means in the barn 1 will be described with reference to this figure. The inside air thermometer 30, the outside air thermometer 32, the wind speed sensor 34, and the house working device thermometer 40 provided in the barn 1 are connected to the controller 50. When the blower 20 operates, the air in the barn 1 flows in the direction of reference numeral 18.

  The in-house work device thermometer 40 is a collective term for all thermometers installed on the surface of the in-house work device 70 such as the carrier 74, stocker 76, garage 78, and automatic milking machine 80. Moreover, it is also possible to include an in-house work device 70 other than the above, which stops its operation at a low temperature. The controller 50 is also connected to all the blowers 20 and the shutters 21.

  A plurality of sensors such as the inside air thermometer 30, the outside air thermometer 32, and the wind speed sensor 34 may be arranged at predetermined intervals in the longitudinal direction of the barn 1 (direction along the side wall 14). This is because since the barn 1 has a rectangular shape, it may not be possible to cover all positions in the barn 1 with the value of one sensor.

  The controller 50 receives a signal Sti from the inside air thermometer 30, a signal Sto from the outside air thermometer 32, a signal Sw from the wind speed sensor 34, and a signal RR from the indoor work device thermometer 40. Further, the controller 50 has a timer 56 and can know the current time and the elapsed time from a certain time.

  As for these received signals, a plurality of signals may be input to one type of sensor. This is because a plurality of sensors of the same type are planned to be arranged. In this case, the controller 50 may control the whole with the average value of a plurality of inputs from the same type of sensor. Further, when the dispersion is obtained and there is a measurement value having a large dispersion value, the control may be performed in consideration of the position of each sensor.

  The controller 50 transmits instruction signals C20a, C20b, and C22 for instructing the frequency of the inverter (the higher the output, the higher the output) to the blower 20 and the ventilation fan 22. Note that the instruction signals C20a and C20b may control all of the blowers 20 arranged on the entire surfaces of the side walls 14a and 14b, or may control specific blowers 20 individually. In particular, in the case of the structure like the barn 2 shown in FIG. 9, the blower 20 may be operated for each zone. Moreover, the ventilation fan 22 arrange | positioned at the end wall 12 can also be operated partially.

  In addition, the controller 50 transmits an opening / closing instruction signal Cst to the shutter 21. The shutter 21 that has received the instruction signal Cst performs an operation such as closing or opening in accordance with the instruction signal Cst. Here, the description will be continued assuming that the shutter 21 performs an opening / closing operation, but control to adjust the opening degree of the shutter 21 may be performed.

  In the barn 1 of the present invention, the purpose is to create a uniform air flow in the barn 1, so that the pull-side fan 20a and the push-side fan 20b arranged in parallel with the pull-side side wall 14a and the push-side side wall 14b. Such a control is not excluded if there is a case where a uniform air flow can be created by driving a part intermittently or by partially increasing or decreasing the wind speed.

  The controller 50 is also connected to a disconnect switch 36 provided on a power supply line that supplies power to the blower 20 and the ventilation fan 22. The controller 50 can cut the power supply by transmitting the instruction signal Cd. Moreover, instruction | indication signal C20a, C20b, C22 which instruct | indicates the frequency of an inverter to the air blower 20 and the ventilation fan 22 can be transmitted, and air consumption can also be suppressed and power consumption can also be controlled.

  The controller 50 is connected to the input / output device 52. The input / output device 52 includes a display screen 52d and input means 52k such as a keyboard. Mainly used by an operator to give an instruction to the controller 50 or to display each status in order to confirm the current state of the barn 1. The controller 50 transmits a signal Sd to and from the input / output device 52, delivers data and the like, receives an instruction signal Cc, and follows the instructions of the operator.

  The input / output device 52 may be equipped with an alarm such as a warning lamp 54. The alarm may be a warning buzzer other than the warning lamp 54.

<Control flow>
The control flow of the controller 50 is illustrated below. However, the controller 50 is not limited to the following flow. Therefore, in the following process flow, the processes can be interchanged or other processes can be inserted without changing the gist of the present invention.

<Main flow>
FIG. 11 shows a main flow of ventilation in the barn 1 by the controller 50. The processing flow of the controller 50 shown in FIG. 10 always returns to the end determination (step S102). That is, the controller 50 repeatedly performs various processes unless an end determination is made. Details of each process will be described after the description of the main flow.

  When the controller 50 starts the process (step S100), an end determination is made (step S102). The end determination may be other than when instructed by the operator from the console of the controller 50, or when it is necessary to stop urgently, the flow may be returned to this flow by interruption. When the process ends (Y branch in step S102), the control ends (step S150). Note that step S150 may include final processing such as stopping power supply to the blower 20 and the ventilation fan 22 and closing the shutter 21.

  When the control is continued (N branch in step S102), initial processing is performed next (step S104). The initial process (step S104) operates to check the temperature of the thermometer installed in each machine of the in-building work apparatus 70 and stop ventilation when the temperature is lower than a predetermined temperature to prevent intrusion of outside air. When the temperature of the in-house work device 70 is low, the in-house work device 70 does not operate due to freezing. Also, the bait itself may freeze.

  In particular, the automatic milking machine 80 also performs a full automatic operation from the nipple washing to milking of the cow to be milked, and also serves as a measuring instrument that instantaneously measures the component data of raw milk during milking. Therefore, if the automatic milking machine 80 does not operate due to freezing, not only milking cannot be performed, but also the health management of the cow cannot be performed. Details of the initial process (step S104) will be described in detail in the section <Initial process>.

  If the initial process (step S104) is exited, then the wind process (step S106) is performed. In the wind process (step S106), the shutter 21 is closed when the wind of the outside air is strong. This is because if the shutter 21 closes vigorously due to the strong wind of the outside air, a loud sound will be heard in the barn, and the cow will be surprised and stressed. In the wind process (step S106), the process may return to the initial process (step S104) at a part of the determination. The wind process (step S106) will also be described in detail in the <wind process> item.

  When the wind process (step S106) is completed, the pull-side fan 20a, the push-side fan 20b, and the ventilation fan 22 are controlled based on the outside air temperature To and the inside air temperature Ti. In the following process, each of the maximum operation process (step S110), the inside air control process (step S114), the day / night-time inside air control process (step S118), and the winter mode process (step S120) will be described in detail later. .

First, a maximum operating process (step S110), in step S108, if the inside air temperature Ti is obviously rise above stress temperature _{T MAX} of bovine (Y branch of Step S108).

Next, in step S112, if the outside air temperature To is equal to or higher than a predetermined temperature (Tot2) (Y branch in step S112), the inside air control process (step S114) is performed. That is, the inside air control process (step S114) is performed when the stress temperature is not the obvious stress temperature T _MAX but is higher than the predetermined temperature. The inside air control process (step S114) is a process for controlling the driving of the pull side blower 20a, the push side blower 20b, and the ventilation fan 22 based on the inside air temperature Ti.

  In step S116, when the outside air temperature To is equal to or higher than a predetermined temperature (Tot1) (Y branch in step S116), the inside / outside air control process (step S118) is performed. The inside / outside air control process (step S118) with day and night is the same as the inside air control process (step S114), but when the outside air temperature To and the inside air temperature Ti have a predetermined relationship, the shutter 21 is closed at night. A procedure to leave is added. As will be described later, this is to avoid shocking the cow.

  When the outside air temperature To is equal to or lower than the predetermined temperature (Tot1) (N branch in step S116), the winter mode process (step S120) is performed. Therefore, the predetermined temperature Tot2 is clearly higher than the predetermined temperature Tot1.

  The day / night-time inside air control process (step S118) is a process performed in a temperature range in which the outside air temperature To is higher than the predetermined temperature Tot1 and lower than the predetermined temperature Tot2. That is, it is a process in the case where the temperature is not so cold as the winter mode process (step S120), and the outside air temperature is not stable and high enough to continue the inside air control process (step S114).

  The controller 50 repeatedly executes these processes until the end determination (Y branch in step S102) is reached.

<Initial processing>
Next, the process of step S104 in the main flow will be described in detail. The initial process (step S104) stops all ventilation and tries to maintain the temperature in the barn when there is a possibility that the in-house work apparatus 70 and the bait, which are incidental facilities in the barn, will freeze. In cold regions, if the in-house work device 70 and the bait itself are frozen, the movement of the barn itself stops.

  Referring to FIG. 12, when the process moves to the initial process (step S104), it is checked whether or not the temperature (RR) of the in-building work apparatus 70 is equal to or lower than a predetermined temperature T5 (step S162). If the temperature is equal to or lower than the predetermined temperature T5 (Y branch of step S162), a warning is issued (step S166), and ventilation is stopped (step S168). Otherwise (N branch of step S162), the process returns to the main flow (step S170).

  Note that the temperature (RR) of the in-house work device 70 means the temperature of all the machines included in the in-house work device 70. If the temperature of at least one of these machines is equal to or lower than T5, the Y branch is selected in step S162.

  Here, the warning can be performed on the display screen 52d or the warning lamp 54 connected to the controller 50, and a method of notifying a warning sound or a predetermined notification destination can be performed. Further, stopping the ventilation (step S168) stops the pull-side fan 20a, the push-side fan 20b, and the ventilation fan 22, and further closes the shutter 21. Further, if there is any other part (for example, a curtain that closes the through hole 14bh or the like of the push side wall 14b) that can be controlled by the controller 50, it is also closed.

  As described above, in the initial process (step S104), if all of the temperature RR of the machines such as the stocker 76, the automatic feeding device, and the automatic milking machine 80 do not exceed the predetermined temperature T5, the main flow is not returned. However, if the cow is raised in the barn, the temperature in the barn immediately rises due to the body temperature of the cow, and the temperature (RR) of the in-house work device 70 also rises.

  Here, the predetermined temperature T5 is preferably set to a temperature of about 5 ° C. This is because the automatic milking machine 80 handling a large amount of water will not freeze at 5 ° C.

<Wind treatment>
Next, the flow of the wind process in step S106 in the main flow of FIG. 11 will be described in detail with reference to FIG. A wind process (step S106) is a process in case the external air wind Wo is too strong. If the outside wind force Wo is too strong, the shutter 21 is suddenly closed by the wind pressure, and an impact sound is heard in the barn. Such impact noise significantly increases cattle stress. In addition, the abrupt shielding operation of the shutter 21 leads to damage of the shutter 21. Therefore, when the outdoor wind force Wo is strong, the shutter 21 is closed.

  Referring to FIG. 13, when the process moves to the wind process (step S106), the outside air wind Wo is measured (step S180). If the outside air wind Wo is smaller than the predetermined value W10 (N branch in step S180), the process returns to the main flow (step S196). When the outside air wind Wo is equal to or greater than the predetermined value W10 (Y branch in step S180), the shutter 21 is closed (step S182). The predetermined value W10 depends on the intensity of the shutter 21. For example, a shutter 21 that is appropriate to set W10 to 10 m / s is commercially available.

  Next, the outside air temperature To is examined (step S184). When the outside air temperature To is equal to or higher than the predetermined temperature Tot3 (Y branch in step S184), the ventilation fan 22 is operated at the maximum capacity (step S186). Here, the maximum capacity operation refers to an operation that can produce the maximum air flow rate. For example, when the ventilation fan 22 is inverter-controlled, it means that the ventilation fan 22 is operated at the maximum frequency. On the other hand, the minimum capacity operation refers to an operation that produces a minimum air flow rate.

  When the outside air temperature To is lower than the predetermined temperature Tot3 (N branch in step S184), the ventilation fan 22 performs the minimum capacity operation. Alternatively, intermittent operation may be performed (step S188). Steps S186 and S188 are processes for performing ventilation by the ventilation fan 22 provided on the end wall 12 when the outside air wind Wo is too strong to open the shutter 21.

  At this time, if the outside air temperature To is higher than the predetermined temperature Tot3, the temperature inside the barn also increases, which means that the ventilation fan 22 is operated at the maximum output. On the other hand, when the temperature is lower than the predetermined temperature Tot3, the ventilation fan 22 may be operated at the minimum capacity. Note that the minimum capacity driving in step S188 may include driving with a capacity lower than the maximum capacity driving. The predetermined temperature Tot3 is preferably set to a temperature between the predetermined temperature Tot1 and the predetermined temperature Tot2.

  When step S186 or step S188 is executed, it is checked whether the temperature RR of the in-house work device 70 is equal to or higher than the predetermined temperature T5 (step S190). When the temperature RR of the in-house work device 70 is equal to or lower than the predetermined temperature T5 (Y branch of step S190), the process is transferred to the initial process (step S104) (step S192).

  In a cold region, the case where the outside air temperature Wo is strong and the outside air temperature To may rapidly decrease may occur. In that case, the temperature of the in-house work device 70 is used as an index to wait for the wind to settle, or the process returns to the initial process (step S104) and closes to the ventilation fan 22 ("ventilation stop process" in step S168: see FIG. 12). ) Is selected.

  If temperature RR of in-house work device 70 is higher than predetermined temperature T5 (N branch of Step S190), processing will return to Step S180 and outside wind power Wo will be measured again.

  Thus, in the wind process (step S106), the process waits until the outside air wind Wo becomes weaker than the predetermined value W10. It should be noted that a time constant may be provided for the determination in step S180 so that the flow returns to the main flow if the wind of the predetermined value W10 is whispered for a certain time or more.

<Maximum operation>
Next, the maximum operation (step S110) in the main flow of FIG. 11 will be described. After exiting the wind process (step S106), the process determines whether the inside air temperature Ti is clearly higher than the temperature at which the cow feels stress (stress temperature T _MAX ) (step S108). The stress temperature T _MAX may be obtained in relation to humidity. For example, you may obtain | require with a THI index | exponent.

Referring to FIG. 14, when inside air temperature Ti is higher than stress temperature T _MAX (Y branch of step S108: see FIG. 11), shutter 21 is opened (step S200), and pull-side fan 20a and push-side fan 20b are opened. Is operated at the maximum capacity (step S202: described as “FANMAX”). This is because the Y branch in step S108 is very stressful for the cow, so it is necessary to quickly cool the barn. Thereafter, the process returns to the main flow (step S204). In the main flow of FIG. 11, when the maximum operation (step S110) is executed, the process returns to the end process (step S102).

<Inside air control>
Next, inside air control (step S114) will be described in the main flow of FIG. By the N branch in step S108, the inside air temperature Ti in the barn is clearly lower than the temperature at which the cow feels stress (stress temperature T _MAX ). Therefore, it is determined whether or not the outside air temperature To is higher than the predetermined temperature Tot2 (step S112). The inside air control (step S114) is a process performed in the Y branch in this determination. Therefore, the inside air control (step S114) is a process selected when the inside air temperature Ti is lower than the stress temperature T _MAX and the outside air temperature To is higher than the predetermined temperature Tot2.

  Refer to FIG. When the process moves to the inside air control (step S114), it is checked whether or not the inside air temperature Ti is equal to or higher than the predetermined temperature Tit2 (step S220). Further, when the inside air temperature Ti is lower than the predetermined temperature Tit2 (N branch in step S220), it is determined whether or not the inside air temperature Ti is equal to or higher than the predetermined temperature Tit1 (step S222). If both are the Y branch (Y branch of step S220 and step S222), the shutter 21 is opened (step S224), and temperature control is performed (step S226). Here, it is assumed that the predetermined temperature Tit2 is higher than the predetermined temperature Tit1.

Since the inside air temperature control (step S114) is a case where the inside air temperature Ti is lower than the stress temperature T _MAX , the fact that both the step S220 and the step S222 are Y branches indicates that the inside air temperature Ti is higher than the predetermined temperature Tit1 and the stress temperature It means lower than T _MAX . When it is in such a range, ventilation control according to the inside air temperature Ti is performed. Details of the temperature control (step S226) will be described in detail with reference to FIG.

  The N branch in step S222 means that the inside air temperature Ti is lower than the predetermined temperature Tit1. In such a case, ventilation using the blower 20 provided on the side wall 14 of the barn is not performed, the shutter 21 is closed (step S228), and the ventilation fan 22 is operated at the minimum capacity (step S230). In this case as well, the minimum capacity operation may include a state where the maximum capacity operation is not performed. When the process is executed, the process returns to the main flow (step S232).

  Next, in the main flow of FIG. 11, day / night inside air control (step S <b> 118) will be described with reference to FIG. 16. The inside / outside air control with day and night (step S118) is a process selected when the outside air temperature To is equal to or higher than the predetermined temperature Tot1 and lower than the predetermined temperature Tot2.

  Referring to FIG. 16, when the process moves to day / night inside air control (step S118), it is checked whether or not the inside air temperature Ti is equal to or higher than the predetermined temperature Tit2 (step S240). In branching, it is further checked whether or not the inside air temperature Ti is equal to or higher than the predetermined temperature Tit1 (step S242). In either case, if the Y branch is determined (Y branch in step S240 and step S242), the shutter 21 is opened (step S244), and the temperature control process (step S226) is performed. Then, the process returns to the main routine (step S258).

  When the inside air temperature Ti is lower than the predetermined temperature Tit1 (N branch in step S242), it is checked whether it is nighttime (step S248). This can be determined by checking the time with the timer 56 of the controller 50. For example, it is nighttime from 18:00 in the evening to 8:00 in the next morning.

When it is not nighttime (N branch of step S248), the shutter 21 is closed (step S250), and the ventilation fan 22 is operated at the minimum capacity (step S252). Then, the process returns to the main routine (step S258).

  On the other hand, if it is nighttime (Y branch of step S248), the shutter 21 is closed (step S254), the ventilation fan 22 is operated at the minimum capacity (step S256), and the process waits until dawn (returns to step S248). The meaning of this night process will be described with reference to FIG.

  Next, the temperature control (step S226) will be described in detail with reference to FIG. The temperature control (step S226) is a process used in the inside air control (step S114) and the inside / outside air control (step S118). The temperature control (step S226) is a process of controlling the pull side blower 20a and the push side blower 20b based on the inside air temperature Ti. How to control needs to be programmed in advance. Here, it is assumed that two controls of a proportional control and a THI control are prepared. Further, it is assumed that which control is performed is determined in advance.

  Specifically, it is input from the input means 52 k of the input / output device 52. That is, the controller 50 is supported as to which proportional control is performed as an instruction from the outside. However, it is not excluded to control to automatically select based on the season and the outside air temperature To.

  When the processing shifts to temperature control (step S226), it is determined whether or not to perform proportional control (step S260). In the case of proportional control (Y branch of step S260), the shutter 21 is opened (step S264), and power proportional to the inside air temperature Ti is sent to the blower 20 (step S266).

Step S266 will be further described. PF is the electric power sent to the pull side blower 20a and the push side blower 20b. In the case of inverter control, it may be called frequency. G1 (Ti) represents that it is proportional to the inside air temperature Ti, and G1 represents a function. The function G1 is not particularly limited as long as it is proportional to the inside air temperature Ti. For example, if the maximum power that can be transmitted is P _MAX , equation (1) may be used.

Here, a is a proportionality constant, and the stress temperature T _MAX may be used as the predetermined temperature Tit2.

  In the case of N branch in step S260, THI control is performed (step S262). In FIG. 17, although determination is made in step S262, when control other than proportional control or THI control is added, it can be inserted following the N branch in step S262. FIG. 17 shows that a process for selecting a control method is inserted when an N branch is made in step S262 as a “selection request” (step S272).

  When THI control is performed (Y branch in step S262), the shutter 21 is opened (step S268), and THI control is performed (step S270). THI is called a “Temperature Humidity Index”, and is defined by Equation (2) (Non-patent Document 1).

  Here, T is the inside air temperature Ti and H is the inside air humidity. That is, when performing THI control, it is necessary to arrange an inside air hygrometer (not shown) in the barn. Since THI calculated by the equation (2) is an index that increases as it becomes uncomfortable, power proportional to THI may be transmitted to the pull-side fan 20a and the push-side fan 20b. In step S270 of FIG. 17, it is expressed as follows.

  Here, G2 is a function including the index THI. The form of this function is not particularly limited, but a function G2 is set such that PF increases as THI increases. In addition, PF in step S266 and step S270 is transmitting the suitable electric power to each of the blowers 20, and does not necessarily mean transmitting the same electric power to all the blowers 20. If the above process is performed, it will return to the inside air control of FIG. 15 or FIG. 16 (step S274).

  Referring to FIG. 17 again, the predetermined temperature Tit2 and the predetermined temperature Tit1 are set at 10 ° C. and 5 ° C., for example. Of course, it can change suitably.

<Winter mode>
FIG. 11 will be referred to again. When the process proceeds to the N branch in step S116, winter mode processing (step S120) is performed. Step S116 is processing when the outside air temperature To is lower than the predetermined temperature Tot1. For example, if the predetermined temperature Tot1 is 5 ° C. or less, the process can proceed to the winter mode process (step S120). Of course, the setting of the value of Tot1 is not limited to this.

  Please refer to FIG. When the process moves to the winter mode (step S120), the shutter 21 is first closed (step S280). This is to prevent cold air from entering the barn. This process is performed when the outside air temperature To is lower than the predetermined temperature Tot1 in the previous step S116 (refer to the main flow in FIG. 11), so that the shutter 21 is closed based on the outside air temperature To. Good.

  Next, it is determined whether it is night (step S282). For example, the timer 56 of the controller 50 may determine that the evening from 18:00 to 8:00 the next morning is night.

  If it is night (Y branch of step S282), it is determined whether or not the inside air temperature Ti is equal to or higher than a predetermined temperature Tit2 (step S284). When the inside air temperature Ti is equal to or higher than the predetermined temperature Tit2 (Y branch in step S284), the ventilation fan 22 is caused to perform the minimum capacity operation (step S286). Thereafter, the process returns to the main flow (step S300).

  If the inside air temperature Ti is lower than the predetermined temperature Tit2 (N branch in step S284), it is further determined whether or not the temperature is equal to or higher than the predetermined temperature Tit1 (step S288). When the temperature is equal to or higher than the predetermined temperature Tit1 (Y branch in step S288), the ventilation fan 22 is caused to perform intermittent operation in the minimum capacity operation state (step S290). Here, the operation time is TW1, and the downtime is TL1. That is, although the inside air temperature Ti is equal to or higher than the predetermined temperature Tit1, the inside of the barn is cold and the outside air temperature To is low, so intermittent operation is performed in order to perform ventilation while suppressing a temperature drop in the barn.

  When the inside air temperature Ti is lower than the predetermined temperature Tit1 (N branch in step S288), the process returns to the main flow without ventilation (step S300). That is, the process is simply closing the shutter 21.

  When it is determined that it is daytime in step S282 (N branch of step S282), it is determined whether or not the inside air temperature Ti is higher than a predetermined temperature Tit2 (step S292). When it is high (Y branch of step S292), the ventilation fan 22 is caused to perform the minimum capacity operation (step S294). If the inside air temperature Ti is lower than the predetermined temperature Tit2 (N branch of step S292), it is further determined whether or not the temperature is equal to or higher than the predetermined temperature Tit1 (step S296). When the inside air temperature Ti is equal to or higher than the predetermined temperature Tit1 (Y branch in step S296), the ventilation fan 22 is intermittently operated in the minimum capacity operation state (step S298). The operation time is TW2, and the downtime is TL2.

  Although the display is the same as that at night shown in step S290, it is desirable to set the daytime driving time TW2 longer than the nighttime driving time TW1. This is because the cold at night is often colder. As for the resting time, it is desirable to set the night resting time TL1 longer than the daytime resting time TL2. This is to reduce the time during which cold air enters at night.

  Even in the daytime, if the inside air temperature Ti is lower than the predetermined temperature Tit1 (N branch of step S296), the process returns to the main flow without doing anything (step S300).

  The controller 50 operates the shutter 21 of the cowshed, the blower 20, the ventilation fan 22 and the like according to the above flow. FIG. 19 shows an actual operation example. FIG. 19A shows a case where the outside air temperature To suddenly decreases. Note that the predetermined temperatures Tot1 and Tot2 of the outside air temperature To and the predetermined temperatures Tit1 and Tit2 of the inside air temperature Ti have a relationship of Tot1 ≦ Tit1 <Tit2 ≦ Tot2.

  In FIG. 19A, the horizontal axis is time, and the vertical axis is temperature. The outside air temperature To may decrease rapidly. On the other hand, the inside air temperature Ti is dragged by the outside air temperature To and decreases, but does not decrease as rapidly as the outside air temperature To. In such a case, the time when the outside air temperature To falls below the predetermined temperature Tot1 (Time-Co) is earlier than the time when the inside air temperature Ti falls below the predetermined temperature Tit1 (Time-Ci).

  This is a process by step S280 (refer FIG. 18) when a process transfers to winter mode process (step S120) by N branch of step S116 of FIG. That is, it can be said that the shutter 21 is closed based on the outside air temperature To.

  FIG. 19B shows a case where the outside air temperature To and the inside air temperature Ti are lowered in substantially the same manner. Such a case occurs when the difference between the outside air temperature To and the inside air temperature Ti is small and the temperature is slowly lowered. The horizontal axis is time, and the vertical axis is temperature. In such a case, the time when the inside air temperature Ti falls below the predetermined temperature Tit1 (Time-Ci) is earlier than the time when the outside air temperature To falls below the predetermined temperature Tot1 (Time-Co).

  This is because the Y branch is selected in step S116 in FIG. 11, and the shutter 21 is closed in the process when the inside air temperature Ti becomes lower than the predetermined temperature Tit1 in step S242 of day / night inside air control (step S118) (step S242). S250 or step S254). Therefore, in this case, it can be said that the shutter 21 is closed based on the inside air temperature Ti.

  As described above, in the barn described in the present embodiment, the shutter 21 can be closed based on either the outside air temperature To or the inside air temperature Ti. In the barn, since both the outside air temperature To and the inside air temperature Ti are judged, it is possible to perform fine control according to how the outside air temperature To and the inside air temperature Ti change. However, the barn (slaughterhouse) according to the present invention does not exclude controlling the opening and closing of the shutter 21 only by the outside air temperature To or the inside air temperature Ti.

  Next, refer to FIG. The operation in step S248 of day / night inside air control (step S118) shown in FIG. 16 will be described. In step S248, it is determined whether or not it is nighttime. This is because the outside air temperature To is equal to or higher than the predetermined temperature Tot1 (Y branch in step S116 in FIG. 11), and the inside air temperature Ti is lower than the predetermined temperature Tit1. (Temperature zone M in FIG. 19C) is shown.

  If the inside air temperature Ti is in this temperature range M before the night, the shutter 21 is likely to be opened and closed after the night. Cows are also sleeping at night, and when the shutter 21 suddenly opens and closes, a great stress is applied to the cows. In particular, since the shutters 21 of the air blowers 20 that are densely installed open and close all along the long side wall 14, the sleeping cow is likely to panic.

  A panicked cattle may run away, hit the walls and pillars in the barn, and be injured or die. Therefore, in such a temperature zone M, the shutter 21 is kept closed until dawn, in the meaning of nighttime judgment (step S248) of day / night inside air control (step S118). is there.

  That is, when the outside air temperature To is equal to or higher than the predetermined temperature Tot1 and the inside air temperature Ti is lower than the predetermined temperature Tit1, the barn of the present invention keeps the shutter 21 closed during the night. The inside air temperature Tit1 is higher than the outside air temperature Tot1.

  The barn of the present invention is operated by the above flow. Since the barn is operated in this way, the inside air temperature Ti in the barn is hardly avoided from falling below the predetermined temperature Tit1. Therefore, the food in the building working device 70 and the stocker 76 does not freeze.

  In particular, when building a large barn in a cold region, it is not easy to heat the barn. In that respect, the barn according to the present invention can be suitably operated because the temperature in the barn is unlikely to be lower than the predetermined temperature Tit1 without particularly providing heating equipment.

  The present invention can be suitably used not only for livestock breeding dairy cows but also for livestock livestock such as beef cattle, chickens and pigs.

DESCRIPTION OF SYMBOLS 1 Cattle barn 2 Cattle barn 3 Management building 3R Area 10 Floor 12 End wall 12a, 12b End wall 12c1, 12c2 Air guide means 12w End wall length 13a, 13b Open / close door 14 Side wall 14a Pull side side wall 14b Push side side wall 14ah, 14ah1 , 14ah2, 14bh, 14bh1, 14bh2 Through holes 14at1, 14at2 (side wall) end 14w Side wall length 14push Push side 14pull Pull side 15a, 15b (through hole) distance 15c From the end of the pull side wall to the first blower Distance 16 roof 16h eave height 18 air flow 19 length 20 (in the region where the pull-side blower is arranged side by side) length 20 blower 20a pull-side blower 20b push-side blower 20f (blower) front 20r (blower) rear 20d Diameter 20w (Blower) Width 20h (Blower) Height 21 Shut -21m Drive motor 22, 22a, 22b Ventilation fan 23 Auxiliary ventilation fan 24 Blower fan 30 Inside temperature thermometer 32 Outside temperature thermometer 34 Wind speed sensor 36 Disconnect switch 40 Thermometer for building work device 50 Controller 52 Input / output device 52d Display screen 52k Input Means 54 Warning light 56 Timer 60 Feeding station 70 In-house work device 72 Rail 74 Carrier 76 Stocker 78 Garage 80 Automatic milking machine To Outside air temperature Ti Inside air temperature T _MAX stress temperature

Claims (5)

A rectangular floor;
A pair of side walls provided on the long side of the floor surface;
A pair of end walls provided on the short side of the floor;
An architectural body having a roof disposed above the side wall and the end wall;
On the first side walls of the pair of side walls, a pull-side blower is juxtaposed in the discharge direction at intervals equal to or less than the diameter of the fan of the adjacent blower over the length of the end wall,
On the second side wall of the pair of side walls, a push-side fan is disposed in a suction direction at positions opposite to the fans on both ends of the pull-side fan, and an openable / closable through hole is provided between the push-side fans. Provided,
A ventilation fan is provided on the pair of end walls,
An outside temperature thermometer for measuring outside temperature outside the building;
An inside air thermometer for measuring the inside air temperature inside the building,
A shutter provided on the outside of the building body of the pull-side fan and the push-side fan;
In-building work device that cannot operate when frozen inside the building,
Connected to the pull-side blower, the push-side blower, the ventilation fan and the shutter, and having a controller having a timer,
The controller receives an outside air temperature measured by the outside air thermometer and an inside air temperature signal measured by the inside air thermometer,
If the received inside temperature rises above the stress temperature of the cow,
The received inside air temperature is less than the stress temperature of the cow,
When the received outside air temperature is equal to or higher than a predetermined outside air temperature (Tot2),
When the received outside air temperature is equal to or higher than a predetermined outside air temperature (Tot1), the inside / outside air control process with day and night,
A barn that performs winter mode processing when the received outside air temperature is lower than a predetermined outside air temperature (Tot1).   In the daytime / nighttime internal air control process, when the outside air temperature is higher than a predetermined outside air temperature and the inside air temperature is lower than the predetermined inside air temperature, a process of keeping the shutter closed during the night is added to the inside air control process. The barn according to claim 1.   The barn according to claim 1 or 2, wherein the controller closes the through hole when the shutter is closed. The controller controls the ventilation fan,
The barn according to any one of claims 1 to 3, which is driven when the shutter is closed. It further has an outside air speed sensor for measuring the wind speed outside the building body,
The barn according to any one of claims 1 to 4, wherein the controller opens and closes the shutter in preference to the output of the outside air speed sensor over the output of the outside air thermometer.