KR100952956B1 - Apparatus for stable ventilation and air purification system with the same - Google Patents

Abstract

PURPOSE: A livestock shed ventilation system and an air cleaning system using the same are provided, which ventilates a livestock shed in order to maintain the temperature, humidity, smell, and toxic gas inside the livestock shed. CONSTITUTION: A livestock shed ventilation system comprises: an indoor part(20) installed inside a cattle shed; a main body(40) which is installed outside the livestock shed and includes a pair of heat exchangers arranged in parallel in order to collect the waste heat of the air exhausted to the outside; and a connection duct(30) connecting the indoor part to the main body by being inserted into the wall of the livestock shed. The indoor part includes: a supply duct supplying external air to the inside of the cattle shed; an exhaust duct discharging the air of the cattle shed to the outside; and a purification unit installed at the front of the exhaust duct.

Description

Barn ventilator and air purifying system using it {APPARATUS FOR STABLE VENTILATION AND AIR PURIFICATION SYSTEM WITH THE SAME}

The present invention relates to a barn ventilator and an air purifying system using the same, and more particularly, to a barn ventilator and an air purifying system using the same, which can recover waste heat emitted from the inside of the barn during the ventilation of the barn. It is about.

In addition to agricultural production, ordinary farmhouses use the barn to raise livestock such as cattle, pigs, chickens, and dogs to generate economic profits.

Of these livestock, the chicken breathes air for metabolism, feeds and waters, and releases poultry, carbon dioxide (CO ₂ ), and heat. Therefore, inside the cage, bad smell and ammonia (NH ₄ ) water vapor due to poultice and respiration are generated.

The results from the metabolism of chickens, if neglected, cause many illnesses, depending on climatic conditions, which lead to productivity and quality problems. For example, coliform disease in chickens is caused by the generation of ammonia gas and causes mortality, causing problems such as decreased feed efficiency and discolored eggs. In addition, most of the diseases causing quality deterioration such as chick umbilitis and navel inflammation are caused by moisture and harmful gases. In order to solve these problems, ventilation is essential for breeding flocks.

However, currently used cages are poor environment where both heating and cooling should be considered in terms of breeding conditions due to poor thermal insulation structure and distinct weather conditions in four seasons. In addition, the summer climate is hot and humid, and in winter, the temperature is low and low, which is expensive to maintain the temperature and humidity of the house in season.

Ventilation systems inside the cage include side venting, tunneling, tunnel cross-mixing, and roof exhaust and tunnel-mixing ventilation.

Among them, an example of a cage ventilation apparatus using a roof exhaust and tunnel mixed ventilation method is disclosed in Korean Patent Publication No. 10-0156292 (registered on July 21, 1998, hereinafter referred to as 'Document 1').

1 is a block diagram of a cage ventilation system according to the document 1 above.

As shown in FIG. 1, the ventilation system 1 of the cage 1 according to Document 1 has a side wall 2 of a movable member 4, part of which is a fixing member 3 and the other part of which can be opened and closed, this side wall 2. Flap (6) formed on the upper side of the ventilator (5) and the flap (6) installed in the ventilation path (5) so as to switch or open or close the inflow direction of the outside air, the roof part (7) Ventilation fan (8) formed at the inner side of the exhaust window (8), the control plate (9) for adjusting the exhaust amount and the side wall (2) or a ventilation fan installed in the rear wall to discharge the indoor air to the outside (Fig. O).

The cage ventilation system according to this document 1 performs the ventilation of the cage 1 to maintain the optimal temperature and ventilation amount by natural or forced ventilation method according to the climate change and the state inside the cage 1.

However, the cage ventilation system according to Document 1 has a very low insulation level by treating the wall surface including the movable member 4 with a winch curtain or a heat insulating cover.

In particular, the cage ventilation system according to Document 1 discharged harmful air by using an exhaust window 8 provided on the roof 7 or by using a ventilation fan provided on the side wall 2 or the rear wall without installing an inlet separately.

Therefore, when the movable member 4 is opened during the ventilation in winter, the cold air from outside is pushed into the cage 1 at once, and the temperature inside the cage 1 is drastically increased, so that the hot air heater is started again to provide rapid heating and heating. do.

As such, if the temperature inside the cage 1 drops and rises, the normal growth of the chicken is inhibited, and the heating and cooling costs are unnecessarily increased.

In particular, by closing the movable member (4) at night there was a problem that the concentration of harmful gases in the cage (1) at dawn.

In addition, since the roof 7 exhaust system discharges fresh air introduced into the cage 1 directly to the roof 7 without accommodating harmful gas from the ground, the plain bottom surface of the chicken is always harmful. A gas layer is formed.

 Accordingly, the cage ventilation system according to document 1 increases the cost of managing the inside of the cage as an environment where chickens can be stably grown by consuming excessive respiratory diseases in late broiler season and excessive fuel consumption in winter. There was a problem.

In addition, the technique disclosed in the following Document 2 is provided with a plurality of fans on the roof of the cage at regular intervals, and having a mouth window on the upper wall of the entrance to operate the fan according to the environment inside and outside the cage to open and close the mouth window by the internal pressure. There is a problem that only has been disclosed for not having the function of recovering the heat of the air discharged from the room.

[Document 1] Republic of Korea Patent Publication No. 10-0156292 (registered September 28, 1998)

[Document 2] Republic of Korea Patent Publication No. 10-0679508 (registered February 31, 2007)

The present invention is to solve the problems as described above, an object of the present invention is to provide a barn ventilation apparatus and an air purification system using the same to ventilate the barn to maintain the temperature, humidity, odor and harmful gases in the barn in the standard state To provide.

Another object of the present invention is to provide a barn ventilation apparatus and an air purification system using the same, which can recover waste heat discharged to the outside during ventilation.

According to a feature of the present invention for achieving the object as described above, the present invention is a pair of heat exchanger is arranged in parallel to recover the waste heat of the air discharged to the outside installed inside the house, the outside of the house A main body having a machine and a connection duct inserted into a wall of the house to connect the indoor unit and the main body, wherein the indoor unit supplies an air supply duct for supplying outside air supplied through the main body to the inside of the house, and the air inside the house. An exhaust duct discharged to the outside and the front end of the exhaust duct is characterized in that it comprises a purifying unit for purifying the air in the livestock house and delivered to the exhaust duct.

The main body is a discharge port for discharging the indoor air passing through the heat exchanger, an intake port for sucking external air and transferring it to the heat exchanger, an exhaust fan and an intake fan provided at the discharge port and the suction port, and a connection port connected to the connection duct, It characterized in that it comprises a motor for driving the exhaust fan and the intake fan and a control unit for controlling the driving of the motor.

The heat exchanger is characterized in that each cell in which heat exchange is made by injection molding laminated plastic.

The connection duct is provided between the pair of air supply passages for supplying the air supply dispersed by the heat exchanger into the house and the pair of air supply passages and the exhaust passage for delivering the air delivered from the purification unit to the main body Characterized in that.

The air supply duct includes first and second louvers for adjusting the direction of air supplied into the house in left and right directions, and the air supply duct to prevent outside air from entering the house through the air supply duct when the ventilation operation is stopped. It characterized in that it comprises a damper for opening and closing the motor for driving the first and second louvers and the damper.

The purifying unit is characterized in that it comprises a frame which is integrally formed to fix the filter and the filter for purifying the air sucked in the inside of the barn.

The purifying unit is characterized in that the upper portion of the filter and the frame is projected toward the inside of the barn than the lower portion is formed obliquely inclined surface.

The filter is a chloride filter, and the frame is characterized in that the aluminum material.

According to another feature of the invention, the air purifying system according to the present invention is a plurality of barn ventilation apparatus consisting of the above-described configuration, a sensing unit for detecting at least one or more of the temperature, humidity, smell of the inside of the house and the detection signal of the detection unit It characterized in that it comprises a central control unit for selectively controlling the drive of the livestock ventilator based on.

As described above, the present invention detects the temperature, humidity, odor and harmful gas in the house in real time using the temperature, humidity, odor sensor, and calculates the required ventilation amount in the house in real time using the detected data to provide ventilation. As a result, the inside of the barn can be maintained in the most vibrant state of the chicken.

In addition, the present invention recovers the waste heat emitted to the outside during ventilation to maintain a constant temperature inside the barn, it is possible to reduce the heating and cooling costs. In particular, since the present invention uses a sensible heat recovery element made of a plastic material inexpensive compared to the expensive aluminum material used in the prior art, it is possible to reduce the installation cost of the barn ventilation apparatus.

In addition, the present invention by applying a pair of heat exchangers for recovering waste heat in parallel to perform the intake and exhaust operation to uniformly distribute the internal air flow of the stall, it is possible to improve the heat exchange efficiency by removing the dead zone in which heat exchange is not made In addition, since the size and weight of the heat exchanger is reduced by half compared to the case where one large heat exchanger is applied, it can be easily exchanged.

In addition, the present invention has the effect of maintaining the entire inside of the house in a uniform state by determining the temperature distribution inside the house using the computational fluid dynamics analysis method to set the location of the house ventilation apparatus.

Hereinafter, a barn ventilator and an air purification system using the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the present embodiment will be described using a cage for raising chickens in livestock. However, the present invention is not limited only to cages, but may be modified to be applied to various places requiring ventilation such as mushroom growers, horticultural farmers, flower farmers, homes, factories, offices, as well as barns such as pigs and barns.

2 is a block diagram of an air purification system using a cage ventilation system according to a preferred embodiment of the present invention, Figure 3 is a perspective view of the cage ventilation apparatus shown in Figure 2, Figure 4 is a cage ventilation apparatus shown in FIG. 5 is an exploded perspective view showing another aspect, and FIG. 5 is a diagram illustrating an internal configuration of the main body shown in FIG. 3.

As shown in FIG. 2, the air purifying system using the cage ventilation system according to the preferred embodiment of the present invention discharges the internal air of the cage 10 to the outside, and supplies fresh air outside to the cage 10. A plurality of cage ventilation apparatuses 11, a detector 12 for detecting the temperature, humidity and smell inside the cage 10 and the detection signal of the detector 12 of the cage ventilation apparatus 11 The central control part 13 which controls a drive is provided.

The cage ventilation apparatus 11 may vary in number, size, and position according to the width of the cage 10.

For example, the cage ventilator 11 is positioned in accordance with the temperature distribution inside the cage 10 using a computational fluid dynamics analysis method, and 6 to 10 units in one cage 10. The cage ventilation system 11 may be spaced apart by a predetermined interval. The configuration of the cage ventilation apparatus 11 will be described in detail with reference to FIGS. 3 to 5.

The detection unit 12 is a temperature sensor for detecting the temperature inside the cage 10, a humidity sensor for detecting the humidity and harmful gases such as ammonia or ethanol contained in the air to measure the pollution of the air inside the cage 10 At least one or more of the odor sensor for outputting a detection signal according to the concentration.

The central control unit 13 calculates in real time the required ventilation amount inside the cage 10 using the detection signal output from the detector 12 to simultaneously control each cage ventilator 11 or each cage ventilator 11. Can be individually controlled through the ID given by each.

To this end, the sensing unit 12, the central control unit 13 and the cage ventilation apparatus 11 is configured to be connected to each other by a wireless or wired communication method.

Next, the configuration of the cage ventilation apparatus 11 will be described in detail with reference to FIGS. 3 to 5.

First, as illustrated in FIGS. 3 and 4, the cage ventilation device 11 includes an indoor unit 20 installed inside the cage 10, a main body 40 and a cage 10 installed outside the cage 10. Inserted into the mounting hole perforated on the wall of the) is made to include a connection duct 30 for connecting the indoor unit 20 and the main body 40.

As shown in FIG. 3, the indoor unit 20 includes an air supply duct 21 for supplying outside air to the cage 10 through the connection duct 30 and an exhaust duct for sucking and discharging the indoor air to the outside ( 22) and a purifying unit 23 provided at the front of the exhaust duct 22 to purify the air discharged to the outside.

As shown in FIG. 3, the air supply duct 21 has a first and second louvers 211 and 212 which rotate in left and right directions and up and down directions so as to adjust the direction of the air supplied to the cage 10. A damper (not shown) is provided to open and close the air supply duct 21 so as to block outside air from flowing into the cage 10 through the air supply duct 21 when stopped.

Motors (not shown) for driving the first and second louvers 211 and 212 and the dampers to rotate the first and second louvers 211 and 212 and the dampers, respectively, are controlled by the central control unit 14. It is preferably driven according to, or under the control of the controller 47 provided in the main body 40.

Alternatively, instead of having a damper, the first louver 211 may be rotated perpendicular to the ground to block the air supply duct 21 to prevent the inflow of outside air.

The purifying unit 23 includes a filter 231 for primary purification of indoor air and a frame 232 for tightly fixing the periphery of the filter 231.

The filter 231 has a stable collection performance, easy to clean and replace, use a semi-permanent use of the chloride network filter, the aluminum frame 232 so that the filter 231 can maintain a tight state It is desirable to be manufactured integrally with the.

At this time, the filter 231 and the frame 232, as shown in Figure 3, the upper portion is projected toward the inside of the cage rather than the lower portion is formed obliquely inclined surface.

Accordingly, the purifying unit 23 may improve the ventilation efficiency by increasing the amount of air discharged to the outside of the cage 10 after being sucked and purified by the filter 231.

In addition, when the dust and foreign matter inside the cage 10 accumulates in the filter 231, the purification unit 23 performs a cleaning operation from the top to the bottom of the filter 232 to easily collect the dust and foreign matter collected in the dust tray. Can be removed.

The connection duct 30 has three air passages arranged side by side, as shown in FIG. 4, wherein a pair of flow passages located at both sides is connected to the air supply duct 21 to supply air into the house. The air supply passage 31 to be supplied is provided, and the flow path between the pair of air supply passages 31 is an exhaust passage 32 which delivers air delivered from the exhaust duct 22 to the main body 40.

The main body 40 supplies fresh air to the outside and discharges the indoor air to the outside, and at the same time recovers the waste heat of the indoor air discharged to the outside to approximate the temperature of the air supplied to the room to the indoor air temperature. Do it.

As shown in FIG. 5, the main body 40 is formed in a box shape having a space formed therein, and includes a discharge port 41 for discharging indoor air on both sides, and a suction port for sucking fresh air from the outside. It is provided with a 42, the upper portion is provided with a connector (43) connected to the connection duct (30).

The discharge port 41 is formed with an inclined surface in which the tip is inclined downward so that the discharge air is discharged downward, and the suction port 42 has a filter network having a mesh higher than or equal to a predetermined reference to remove dust contained in external air. It is desirable to install it.

And the connector 43 is a pair of air supply port 431 and the exhaust port 31 is located between and connected to the exhaust flow path 31 so as to correspond to the air supply flow path 31 and the exhaust flow path 32 of the connection duct ( 432.

At this time, as the main body 40 and the connecting duct 30 are connected in the vertical direction, the air supplied and exhausted between the main body 40 and the connecting duct 30 must move in the vertical direction, so that the main body 40 is heat exchanged. It is preferable to further include a curved flow path formed with a certain curvature so that the air can move smoothly between the group 44 and the connector 43.

As shown in FIG. 5, an inner space of the main body 40 includes a pair of heat exchangers 44 for recovering waste heat and an exhaust fan 45 provided at the discharge port 41 to smoothly discharge indoor air. And an intake fan 46 and a heat exchanger 44, an exhaust fan 45, and an intake fan 16 that are provided at the intake port 42 to drive outdoor fresh air into the cage 10. A control unit 47 for controlling is provided.

The heat exchanger 44 stacks and assembles a plurality of cells that exchange heat as air flows, and the assembled pair of heat exchangers 44 are arranged in parallel in a single space to ensure sufficient ventilation.

The heat exchanger 44 is preferably provided with an intake filter 441 and an exhaust filter 442 which are installed at the inlet side and the exhaust side inlet to remove contaminants contained in the inhaled and discharged air, respectively. That is, in the present invention, since the air supplied from the outside to the cage 10 is fresh air, purification is performed once through the intake filter 441, and the air discharged to the outside from the cage 10 is polluted air. Secondary purification of the filter 231 and the exhaust filter 442 of the purification unit 23 is performed.

In addition, the heat exchanger 44 is manufactured by injection molding a plastic material so as to reduce the manufacturing cost compared to a conventional heat exchanger using an expensive aluminum material.

The exhaust fan 45 and the intake fan 46 are provided with a brushless direct current motor (hereinafter referred to as a BLDC motor) that generates rotational power (not shown). The BLDC motor is more durable than a DC motor by removing a brush, has a lower power consumption and higher efficiency than an AC motor, and provides a pulse width modulation (PWM) control signal. Through the rotation of the BLDC motor can be easily controlled.

The controller 47 controls the driving of the heat exchanger 44, the exhaust fan 45, and the intake fan 46 under the control of the central controller 13. However, when an abnormality occurs in the central control unit 13, or when the user operates the manual operation button to individually operate each cage ventilation apparatus 11, the control unit 47 individually controls the operation according to the user's operation. You can also do

In addition, as shown in FIG. 4, the main body 40 opens and closes to replace the heat exchanger 44, the suction filter 441, and the exhaust filter 442, or to manually operate the controller 47. The door 48 is provided.

The door 48 is coupled to the main body 40 using a torque hinge so that the user can open the door 48 by a predetermined angle and then hold it by the user or maintain the open state without a separate pedestal. Accordingly, the door 48 is closed by itself when a force is applied in the open direction in the open state at the time of closing.

5, the drain plate 491 is formed to have a predetermined gradient in the lower portion of the heat exchanger 40 to collect condensed water condensed by the temperature difference between the indoor air and the outdoor air. And a drain portion 49 including a drain pipe 492 for discharging the condensed water collected in the drain plate 491 to the outside.

As described above, the cage ventilation device 11 according to the preferred embodiment of the present invention has a pair of heat exchangers 44 arranged in parallel therein, thereby dispersing fresh air sucked through the suction port 42 to both sides. A pair of heat exchanger 44, the supply duct 31 of the connection duct 30 and the air supply duct 21 is supplied to the room. The cage ventilation system 11 distributes the purified indoor air to both sides through the exhaust duct 22 and the pair of heat exchangers 44 while passing through the purification unit 23, and then discharges it to the outside through the discharge port 41. do.

Therefore, the cage ventilator 11 according to the preferred embodiment of the present invention has a dead heat exchange between the intake air and the discharged air by performing heat exchange in the entire pair of heat exchangers 44 arranged in parallel. By reducing the dead zone, the heat exchange efficiency can be improved.

In addition, the cage ventilation system 11 according to the preferred embodiment of the present invention can reduce the size and weight of the heat exchanger 44 by half compared to the case of having one heat exchanger having the same capacity, thereby cleaning and maintenance. Can be easily performed.

Next, the operation of the cage ventilation system and the air purification system using the same according to a preferred embodiment of the present invention will be described in detail.

First, a plurality of cage ventilation devices 11 are installed at positions set according to temperature distribution inside the cage 10 using a computational fluid dynamics analysis method.

To this end, through-holes are formed in the walls of the cage 10, the connecting duct 30 is inserted into the through-holes, and then the interior 20 is installed on the inside of the cage 10, and the outside of the cage 30 is walled. Install the main body 40 to connect to each other. At this time, molding is performed on the connection part to enable waterproofing and dustproofing between the main body 40 and the connection duct 30 and the indoor unit 20.

As described above, the present invention can install the cage ventilation device 11 only by drilling a wall without interference of existing facilities provided in the cage 10, and thus, the installation work can be easily performed and the installation area can be minimized.

When the installation work of the cage ventilation device 11 is completed, the detector 12 including at least one or more of a temperature sensor, a humidity sensor, and an odor sensor is installed at a predetermined position, and the detector 12 and the central controller ( 13) and the cage ventilation system 11 are connected to each other in a wired or wireless communication method to enable communication.

As such, when the installation work of the air purifying system using the cage ventilation device is completed, the central control unit 13 uses a detection signal transmitted from each sensor of the detector 12 to real-time the required ventilation amount in the cage 10. It calculates by and controls the drive of each cage ventilation system 11.

Then, each cage ventilator 11 controls the BLDC motor driving the exhaust fan 45 and the intake fan 46 under the control of the central control unit 13 to perform intake and exhaust operations, and at the same time, the heat exchanger 44 ) Absorbs waste heat from the discharged air to bring the temperature of the air supplied to the room closer to the room air. In this case, the controller 47 may finely adjust the temperature, humidity, and smell state of the indoor air by adjusting the rotation speeds of the BLDC motor driving the exhaust fan 45 and the intake fan 46 using the PWM signal.

Accordingly, the present invention can reduce the cooling and heating costs by minimizing the temperature difference between the indoor air and the air supplied to the room even if the temperature difference between the indoor and outdoor occurs.

For example, Figure 6 is an operational state diagram illustrating the operation of the cage ventilation apparatus according to a preferred embodiment of the present invention.

As shown in FIG. 6, the cage ventilator 11 drives the exhaust fan 45 to exhaust the indoor air purified from the purification unit 23 in the direction of arrow A along the exhaust duct 22 and the exhaust passage 32. ) Is discharged to the outside through the heat exchanger 44 and the discharge port 41.

At the same time, the cage ventilator 11 drives the intake fan 46 to supply external fresh air to the room through the intake port 42, the heat exchanger 44, and the air supply duct 21 along the direction of arrow B. . At this time, the controller 47 drives the motors connected to the first and second louvers 211 and 212 of the air supply duct 21 to rotate the first and second louvers 211 and 212 in the left and right directions and the up and down directions, so that the cage 10 Adjust the direction of the air supplied to the inside.

In this way, as the exhaust operation and the intake operation proceed, the heat exchanger 44 recovers the waste heat of the discharged air and raises or lowers the temperature of the sucked air to approach the room temperature. Accordingly, the present invention can reduce the cooling and heating costs by minimizing the temperature difference between the room air and the air supplied to the room.

Through the above process, the present invention detects the temperature, humidity, odor and harmful gas inside the cage in real time using the temperature, humidity, odor sensor, and calculates the required ventilation volume in the cage in real time using the detected data. As the ventilation is carried out, the inside of the cage can be kept constant in the state where the growth of the chicken is most active.

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self evident.

In the above embodiment, but described using the cage 10, the present invention is not necessarily limited thereto. That is, the present invention may be modified to be applied to various places requiring ventilation such as mushroom farms, horticultural farms, flower farms, homes, factories, offices, as well as barns such as barns and pigs.

1 is a block diagram of a cage ventilation apparatus according to the prior art.

2 is a block diagram of an air purification system using a cage ventilation apparatus according to a preferred embodiment of the present invention.

Figure 3 is a perspective view of the cage ventilation apparatus shown in FIG.

Figure 4 is an exploded perspective view showing the cage ventilation device shown in Figure 3 from another side.

5 is a configuration diagram showing the internal configuration of the main body shown in FIG.

6 is an operational state diagram illustrating the operation of the cage ventilation system and the air purification system using the same according to a preferred embodiment of the present invention.

`` Explanation of symbols for main parts of drawings ''

10: cage 11: cage ventilator

12: sensing unit 13: central control unit

20: Interior 21: Supply duct

22: exhaust duct 23: purification unit

30: Connection duct 31: Air supply passage

32: exhaust passage 40: main body

41: outlet 42: inlet

43: connector 44: heat exchanger

45: exhaust fan 46: intake fan

47: control unit

Claims (9)

An indoor unit installed inside the barn, A main body having a pair of heat exchangers installed outside the barn and arranged in parallel to recover waste heat of air discharged to the outside; A connection duct inserted into a wall of the barn and connecting the indoor unit and the main body; The indoor part is provided in the air supply duct for supplying the outside air supplied through the main body to the inside of the house, an exhaust duct for discharging the air inside the house to the outside, and is installed in front of the exhaust duct to purify the air inside the house to the exhaust duct It has a purification unit to deliver to, The main body is a discharge port for discharging the indoor air passing through the heat exchanger, an intake port for sucking external air and transferring it to the heat exchanger, an exhaust fan and an intake fan provided at the discharge port and the suction port, and a connection port connected to the connection duct, A motor for driving the exhaust fan and the intake fan, and a control unit for controlling the driving of the motor, The heat exchanger is a livestock ventilator, characterized in that each cell in which the heat exchange is made by injection molding laminated assembly. delete delete The method of claim 1, wherein the connection duct A pair of air supply passages for supplying air supplied by the heat exchanger into the house And an exhaust passage formed between the pair of air supply passages to transfer air delivered from the purification unit to the main body. The air supply duct of claim 4, wherein the air supply duct is First and second louvers for adjusting the direction of air supplied into the barn in left and right directions; A damper that opens and closes the air supply duct so as to prevent outside air from entering the house through the air supply duct when the ventilation operation is stopped; And a motor for driving the first and second louvers and a damper. The method of claim 4, wherein the purification unit A filter for purifying the air sucked in the barn; And a frame formed integrally with the filter to tighten the filter. The method of claim 6, wherein the purification unit The upper part of the filter and the frame protrudes toward the inside of the house than the lower barn ventilator characterized in that it is formed obliquely inclined surface. The method of claim 7, wherein The filter is a network chloride filter, The frame ventilator, characterized in that the aluminum material is formed. A plurality of barn ventilator comprising any one of claims 1, 4 to 8, A sensing unit that detects at least one of temperature, humidity, and smell inside the house; And a central control unit for selectively controlling the driving of the livestock ventilator based on the detection signal of the sensing unit.

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