JP2007263088A - Air blower for livestock barn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide air blowers for a livestock barn capable of automatically stopping the operation of the air blowers when the speed of blasting fans of the air blowers exceeds the rotational speed preset according to the flow velocity of the outside air flowing into the barn for a specified time or longer or is lowered when the blasting fans of the air blowers rotate at a predetermined reference speed or a set rotational speed, and automatically re-driving the air blowers when the idle rotational speed of the blasting fans of the air blowers automatically stopped by the outside air is lowered to a preset rotational speed or less. <P>SOLUTION: This air blower for a livestock barn comprises the plurality of air blowers 2 arranged inside the barn 1 linearly along the longitudinal direction and suspended, a temperature detection sensor 11 installed in the barn 1 and detecting the temperature inside the barn 1, a driving operation control part 20 for controlling the energization and deenergization of the air blowers 2 according to the flow velocity of the outside air flowing into the barn 1 through the entrance 13 and the windows of the barn 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention is an improvement of an air blower for a livestock house that is suspended in a livestock house for raising livestock such as cattle and horses, and is blown at a predetermined air flow rate in the livestock house so that the inside of the livestock house is always ventilated and dried. The purpose of this is to simply avoid that the operation of the blower is hindered by the wind force of the outside air flowing into the barn from the outside during the operation of the blower, to save energy in the blower, By keeping the ventilation in good condition at all times, the breeding environment of the barn has been improved.

Conventionally, when maintaining and improving the breeding environment of a barn, it is difficult to adopt air conditioning equipment such as an air conditioner due to profitability problems. It was used to raise livestock while ventilating and drying the barn. However, when raising large-scale livestock such as cattle and horses, livestock such as cattle and horses can be kept relatively cold in the cold season of winter, while hot in summer. In addition to this, there was a tendency that the physical condition was easily lost due to the sudden rise in humidity.

For this reason, according to the area of a building, for example, a plurality of above-mentioned air blowers are attached to barns, such as a cowshed, in the state suspended from the ceiling. This prevents fatigue from the heat of livestock from the rainy season to autumn, and prevents the livestock from losing health by reducing the temperature difference between daytime and morning / evening in late autumn and early summer. Or
Maintaining a good breeding environment in the barn at all times by drying the rugs and sawdust laid on the floor of the barn well, and discharging the odor from manure and body odor from the barn to the outdoors It is installed to keep livestock in a healthy state (for example, see Patent Document 1).

And when installing the ventilation unit for the barn, the inside of the barn is virtually divided into a plurality of blocks in the longitudinal direction, and in each barn, a sensor such as a temperature sensor that senses the environmental conditions in the barn A predetermined number of livestock blower units are installed along the longitudinal direction of the barn for each block, and an inverter for controlling the rotational speed of the blower unit for each block is installed for each block. A slave sequencer that compares the data sent from each sensor with the target data and transmits it to the inverter is provided for each block, and the ventilation and drying of each block are promoted independently, thereby raising the temperature and humidity of the livestock. The problem of losing physical condition is avoided (see, for example, Patent Document 1).

Japanese Examined Patent Publication No. 3-62978

However, in a barn with a plurality of air blowers, especially on sunny days from early spring to autumn, the doors and windows at the barn doors are opened during the day to promote drying in the barn and to reduce odors. In this case, the air blower is always driven to maintain good ventilation and dryness in the barn, and keep the barn in a sanitary manner. It was.

However, in the above, when the barn is open during the day, when strong winds (outside air) such as gusts flow from the outside into the barn, for example, outside air with a flow rate of 5 to 10 m / s or more enters the barn. When the air flows in, the blowing device attached in the vicinity of the outside air flows, when the wind is a tailwind due to the inflow of the outside air, the rotation speed of the blowing fan rapidly rises above the set rotation speed,
In the case of the head wind, the blower fan rotates with the rotational speed lower than the set rotational speed due to the reverse wind.

As a result, if the inflow of outside air is used as a tailwind to rotate the blower fan, that is, if the blower fan rotates more than the set number of rotations, the air blown from the blower fan becomes stronger and is sent to the livestock side, Since the wind is exhausted to the floor side, the livestock receives wind force exceeding the set rotation speed while the strong wind is flowing in, so there is a risk of ill health. In addition, when the strong wind is exhausted to the floor side of the barn, firewood and dust laid on the floor will rise and circulate in the barn, which may deteriorate the breeding environment of the barn. .

Furthermore, when the outside air that flows into the barn becomes a reverse wind and comes into contact with the blower fan, the rotational speed of the blower fan temporarily decreases. Therefore, the motor of the blower device corrects the decrease in the rotational speed of the blower fan. Then, an attempt is made to increase the decreased rotational speed so as to return the rotational speed to the set rotational speed. As a result, the electric motor of the blower device has a problem of wasteful consumption of electric power energy due to the flow of more current than necessary in order to maintain the rotation speed of the blower fan.

In view of the above problems, the present invention is directed to the operation of the blower device when the rotational speed of the blower fan deviates from a predetermined rotational speed for a predetermined time or more due to the flow rate of the outside air flowing into the barn by the operational blower apparatus. Is stopped, and when the flow rate of the outside air is reduced, the blower is re-driven, so that it is possible to effectively avoid the adverse effects caused by the stop of the blower in the barn and improve the breeding environment in the barn The purpose of the present invention is to provide an improved air supply for a barn that enables energy saving operation of the air blower.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a plurality of blower devices arranged in a straight line along the longitudinal direction in the barn and suspended, and a plurality of blowers attached in the barn and installed in the barn A temperature detection sensor for detecting the temperature, and a drive operation control unit for the blower that controls the stop of energization and the start of energization according to the flow rate of the outside air flowing into the livestock from the entrance and window of the barn. It is characterized by being configured.

According to a second aspect of the present invention, in the slaughterhouse blower according to the first aspect, the drive operation control unit is configured such that the blower fan of the blower blows a predetermined set rotational speed for a certain period of time according to the flow rate of outside air flowing into the shed. When deviating from the above, an electric motor stopping means for stopping the operation of the blower by stopping energization to the blower is provided.

The invention according to claim 3 is the air blower for a barn according to claim 1, wherein the drive operation control unit includes the idle rotation speed of the blower fan of the blower that idles due to the inflow of outside air while the energization to the blower is stopped. When the rotation speed is less than or equal to a predetermined set number of rotations, an energization restart command means for restarting energization of the blower is provided.

According to a fourth aspect of the present invention, in the livestock blower device according to the first aspect, the drive operation control unit includes a case where the blower fan does not reach the set rotational speed within a predetermined time after resuming energization to the blower device. Is a control unit with a built-in function to determine the drive of the blower as abnormal, energization stop means for instructing to stop energization of the blower in response to a command from the control unit, and a notification to notify the abnormal stop of the blower Means.

According to a fifth aspect of the present invention, in the slaughterhouse blower apparatus according to the first aspect, the drive operation control unit is configured to rotate a blower fan of the blower device at a rotational speed following the detected temperature in the shed. When the controller that incorporates the function of changing the rotational speed of the blower and the rotational speed of the blower fan deviates from the rotational speed that follows the detected temperature due to the flow rate of the outside air flowing into the barn, for a predetermined time or more, An electric motor stopping means for stopping energization of the blower is provided.

In the invention according to claim 1, each air blower suspended and arranged in the barn can rotate the air blower fan at a rotational speed corresponding to the temperature detected by the temperature detection sensor provided in each air blower. In addition, it is configured to temporarily stop or restart the blower according to the flow rate of the outside air flowing into the barn. It is possible to reduce the rotation speed, that is, since the rotation speed of the blower fan can be controlled according to cold and warm, the temperature in the barn can always be maintained at a temperature environment suitable for raising livestock. Become. As a result, for example, livestock can be bred hygienically and in a healthy state without losing physical condition even in the hot summer season. Moreover, in the present invention, the operation of the blower can be stopped or restarted by a command from the drive operation control unit provided in the blower according to the flow rate of the outside air flowing into the barn. As a result, energy saving operation of the blower is possible, and even if the blower stops the rotation of the blower fan due to the flow rate of the outside air, the outside air will flow into the livestock as it is. As a result of being able to maintain the same ventilation and dry state as in the operation state, it is possible to satisfactorily maintain the environmental conditions suitable for raising livestock in the barn.

In invention of Claim 2, when the ventilation fan of an air blower rotates deviating from setting rotation speed with the flow velocity of the external air which flows in into a livestock barn, by the command from the drive operation control part installed in the air blower Since it is configured to immediately stop the operation of the electrically driven blower, the outside air flowing into the barn with the barn opened is strong enough to deviate from the set rotational speed of the blower for a certain time or more. In the case of the flow velocity (wind power), the blower fan of the blower to be driven is immediately stopped, and the blower fan and the blower can be prevented from being damaged by the inflow of strong wind, which is convenient.

In the invention of claim 3, when the blower fan of the blower that has deviated from the set rotational speed at a flow rate of outside air for a certain time or more and stopped rotating, is idling by the outside air flowing into the barn,
When the idling number of rotations is equal to or less than a predetermined idling number of revolutions, it is configured to resume energization to the blower device and rotate the blower fan in response to a command from the drive operation control unit. Since the blower fan, which has stopped rotating in step 1, can immediately start rotating when the flow rate of the outside air flowing into the barn falls, the blower unit is restarted almost at the same time as the flow rate of the outside air drops. Since it can be driven, temperature rise in the barn and dwelling of moisture can be favorably avoided, and deterioration of the breeding conditions of livestock can be reliably prevented.

In the invention according to claim 4, after the energization of the blower is resumed, when the rotation speed of the blower fan does not reach the predetermined rotation number within a predetermined time, the energization to the blower is performed by a command from the drive operation control unit. And the operation is stopped, and the notification means notifies that the blower is abnormal. Therefore, when the blower resumes operation, foreign matter scattered by the inflow of outside air gets entangled in the blower fan. When the blower fan is difficult to rotate, or the air blower suspended by the flow rate of the outside air flowing into the barn swings and hits the barn, struts, walls, etc. When it becomes difficult, the blower fan is forcibly rotated to damage the blower device itself, or a large amount of current flows through the motor that drives the blower fan, causing the motor to overheat or burn out. To forestall state, and it is possible to satisfactorily prevent a convenience.

In the invention according to claim 5, the air blower detects the temperature in the vicinity of the air blower and can rotate the blower fan at the rotational speed corresponding to the detected temperature. Is designed to be variable in proportion to the temperature, so that the temperature tends to be relatively high near the center of the barn, and conversely, the rise of the temperature tends to be suppressed by the inflow of outside air or the door of the doorway. Because the rotation speed of the blower fan is different from the vicinity, it is convenient because livestock can be raised in the optimal breeding environment at any part of the barn, and the blower fan itself is controlled by the flow rate of the outside air. However, when the rotation speed deviates from the predetermined rotational speed for a certain time or more, the blower can be immediately stopped. By rotating above the speed satisfactorily prevent inverter from being damaged by voltage energizing the electric circuit of the motor and the inverter becomes high,
On the contrary, in the case of head wind, it is possible to avoid the problem that the motor burns out by flowing a large current through the coil of the motor to increase the rotation speed due to the decrease in the rotation speed of the blower fan. It is convenient because it can be used in a stable state over a long period of time, with reduced power consumption.

Embodiments of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a barn for raising livestock, and in this barn, a plurality of blowers 2 are arranged along the longitudinal direction of the barn 1,
For example, the air blower 2 itself is hung on the air blower support beam 1a constructed using the space near the ceiling in the barn 1 so that the air blower 3 is inclined downward. Is retained.

The plurality of air blowers 2 arranged in the barn 1 are connected in parallel to each other via a power line 5 as shown in FIG. In FIG. 3, reference numeral 6 denotes an operating device connected to the drive power source 4. The operating device 6 basically includes a controller 7 built in for controlling the operation of the blower 2, and the controller 7. And an operation unit 8 (see FIG. 5) for operating the device.

And the said controller 7 and the air blower 2 are connected via the signal wire | line 9, and various command signals from the controller 7 are attached to the drive operation control part 20 attached to the electric motor 21 which comprises each air blower 2 later. Send it out. 3 indicates a temperature detection sensor installed in the barn 1, and the temperature detection signal detected by the temperature detection sensor 11 is sent to the driving operation control unit 20 via the signal line 12. .

Further, in the barn 1 in which the air blower 2 is suspended, as shown in FIGS. 1, 2, and 4, an entrance 13 for a breeder and livestock to enter and exit, and a window for taking outside air into the side wall of the barn 1 A predetermined number 14 is provided. The windows 14 may be opened / closed using any opening / closing means (not shown), for example, whether to open / close individually or to open / close collectively by a handle operation.

Next, the configuration of the operating device 6 will be described. First, the operation unit 8 of the operation device 6 includes
As shown in FIG. 5, a power switch 15 for turning on / off the operating device 6, an operating switch 16 for inputting the temperature in the barn 1, and a rotational speed setting switch 17 for inputting the rotational speed of the blower 2.
And an operation switch 18 for turning on / off the blower 2 is provided.

And the controller 7 incorporated in the operating device 6 is for starting the drive of the air blower 2 by a preset program by operating the various switches 15 to 18. A program having the following functions is stored.

(1) ON / OFF operation function of the power switch To operate the power switch 15 to turn the controller 7 ON / OFF by energizing or stopping the operation power supply to the power supply unit of the controller 7 built in the controller device 6 A program with the functions of.

(2) Temperature information input function by operation switch By inputting the temperature information in the barn 1 to the input section (not shown) of the controller 7 by the operation switch 16, the input reference temperature is displayed on the display a, for example, digitally. And a function of transmitting temperature information input to the input unit of the controller 7 to the drive operation control unit 20 of the blower 2.

(3) Rotational speed information input function of blower by rotational speed setting switch
A function of causing the display b to display, for example, a digital display of the input rotation speed by inputting the reference rotation speed of the blower fan 3 of the blower 2 to an input section (not shown) of the controller 7 by the rotation speed setting switch 17; The program provided with the function which outputs the information of reference | standard rotation speed to the drive operation control part 20 of the air blower 2. FIG.

Moreover, in the program provided with the rotation speed information input function of the blower 2, when the reference temperature in the barn 1 is set to 20 ° C., the reference rotation speed of the blower fan 3 is set to 300 rpm / 20 ° C. Each time the reference temperature is increased or decreased by 1 ° C., 10 rpm / 1 ° C.
A program with a function to increase / decrease the rotation speed and rotate the blower fan 3 at 100 rpm at the lowest temperature (0 ° C.) and 500 rpm at the highest temperature (40 ° C.) 3 is input, for example, when the reference temperature is input as 20 ° C. and the rotation speed of the blower fan 3 is input as 350 rpm, the blower fan 3 is rotated at the input rotation speed (350 rpm). A program with functions that can
When a reference temperature of 21 ° C. is input and the rotation speed of the blower fan 3 is not input, the rotation speed of the blower fan 3 is set to 310 rpm, that is, a program having a function of rotating at a rotation speed corresponding to the input reference temperature; And a function of outputting a reference rotational speed corresponding to the reference temperature to the drive operation control unit 20 of the blower 2 is also provided.

In the program in which the reference rotation speed corresponding to the reference temperature is set, when the inside of the barn 1 updates the maximum temperature or the minimum temperature, the rotation speed corresponding to a preset temperature of 40 ° C. or 0 ° C. Needless to say, the program is set to rotate the blower fan 3 while maintaining the above. That is, when the temperature in the barn 1 exceeds 40 ° C., the rotation fan 3 rotates at a rotation speed corresponding to the temperature of 40 ° C., and when the temperature falls below 0 ° C., the blower fan 3 rotates at the rotation speed corresponding to 0 ° C. The program is set to let

(4) ON / OFF operation function of the blower device After setting the operation contents of the blower device 2 (the reference temperature input of the barn 1 and the reference rotation speed input of the blower fan 3), the energization / energization of the motor 21 of the blower device 2 is performed. This is a program for giving a stop command, that is, a program having a function of the operation / stop operation switch 18 for operating / stopping the blower 2, and a command signal for energization / energization stop is input to the operation stop operation switch 18. By blower 2
Is output to the driving operation control unit 20.

Next, the drive operation control unit 20 described above will be described. This drive operation control unit 20 is shown in FIG.
, 5, each motor 21 constituting each blower 2 is attached individually,
The controller 7 of the controller device 6 is connected in parallel via a signal line 9.

Then, the drive operation control unit 20 is provided with the temperature / rotation speed information input unit 2 as shown in FIG.
2, a control unit 24 that outputs a control command signal to an inverter 31 that drives and controls the operation of the electric motor 21 by comparing the various information input to the input unit 22 and the required data read from the memory 23. The energization command means 25 and the energization restart command means 26 that output the energization command signal in response to the control command signal from the control unit 24, and the motor 21 of the blower 2 are abnormal within a predetermined time after the blower 2 is started. Is generated, an energization stop unit 27 that outputs an energization stop command signal in response to a control command signal from the control unit 24, an informing unit 28 that notifies that the energization command unit 27 has been operated, and an abnormality in the blower 2 The motor stop means 29 that stops the drive of the electric motor 21 by stopping the drive of the inverter 31 by the control command signal from the control unit 24, and the various means 2
The output means 30 outputs a drive or stop command signal to the inverter 31 based on the command signals from 5 to 29.

Next, details of each component in the drive operation control unit 20 will be described. First, the function of the input unit 22 will be described. The input unit 22 includes reference temperature information of the barn 1 and reference rotation speed information of the blower fan 3 output from the controller 7, and detected temperature information (hereinafter, detected temperature) detected by the temperature detection sensor 11 installed in the barn 1. And the rotational speed information detected from the motor 21 that rotates the blower fan 3 (the rotational speed of the blower fan 3 and hereinafter referred to as the rotational speed) are individually input, and each of these pieces of information is sorted into the control unit 24 described later. It has a function to output.

Next, the memory 23 that outputs required data to the control unit 24 in response to a read command from the control unit 24 will be described. In this memory 23, data indicating the relationship between the temperature near the blower 2 provided with the temperature detection sensor 11 in the barn 1 detected by the temperature detection sensor 11 and the rotation speed of the blower fan 3, that is, the detected temperature When the temperature is 20 ° C., the rotational speed of the blower fan 3 is set to 300 rpm, and the rotational speed of the blower fan 3 is increased / decreased by, for example, 10 rpm each time the detected temperature detected by the temperature detection sensor 11 increases / decreases by 1 ° C. Temperature / rotational speed information indicating the relationship between the detected temperature and the rotational speed at which the limit rotational speed is set when the detected temperature reaches its upper limit (40 ° C .: 500 rpm) and lower limit (0 ° C .: 100 rpm). Data (in this case, if the reference rotational speed is set at 20 ° C. and, for example, the rotational speed is 250 rpm, the rotational speed of the blower fan 3 is set to 10 r each time the detected temperature rises or falls by 1 ° C. It goes without saying that it can be increased or decreased by m), and if the rotational speed of the blower fan 3 exceeds or falls below a predetermined rotational speed due to external factors (outside air flowing into the barn 1), For example, if the reference rotational speed set by the controller 7 is 300 ° C. at 20 ° C., the rotational speed of the blower fan 3 increases to 330 rpm or more due to external factors (in the case of tailwind), or decreases to 270 rpm or less (headwind) In other words, when the blower fan 3 is 30r relative to the reference rotational speed.
When the rotation of the blower 2 is stopped more or less than pm, the blower 2 operation is stopped when the blower 2 is stopped. Whether or not the operation of the blower 2 is restarted by the idling rotation speed of the blower fan 3 (
For example, when the idling rotation speed of the blower fan 3 is 70 rpm or less, the re-drive of the blower 2 is performed.
It is configured to store data of air blower re-operation information indicating the relationship between the re-drive of the air blower 2 and the stop state continuation for determining whether the air is stopped at 0 rpm or more. Can be read and used by the control unit 24 at any time by a reading function from the control unit 24 described below.

The above-described control unit 24 is configured to store a program having various control functions.
Roughly divided from the various programs, a rotation speed variable program for changing the rotation speed of the blower fan 3 for each temperature detected by the temperature detection sensor 11, and the rotation speed of the blower fan 3 is 30 rpm with respect to the reference rotation speed. An emergency stop program for the blower 2 that stops the operation of the blower 2 when the number of the blower 2 is increased, an energization (operation) continuation program for continuing energization of the blower 2, and the operation of the blower 2 that has been stopped. When the rotational speed of the blower fan 3 does not reach the reference rotational speed even after a predetermined time has elapsed, it is determined that an abnormality has occurred in the blower 2 and the blower 2 is operated. Is an abnormality determination program for stopping the motor 21 (stopping the electric motor 21), and the control unit 24 includes the above-described programs.

Next, the outline of each program constituting the control unit 24 will be described. First, when the rotation fan 3 is rotated while the reference temperature and the reference rotation speed of the barn 1 set by the controller 7 are 20 ° C. and 300 rpm, the rotation speed variable program is executed by the temperature detection sensor 11. When the temperature in the vicinity of (blower 2) is detected as 21 ° C., memory 23
The rotation speed of the blower fan 3 at 21 ° C. is read out from the power supply, and a control command signal of a rotation speed change command for rotating the electric motor 21 that rotates the blower fan 3 at a rotation speed of 21 ° C. (310 rpm) is described later. 25 is a program having a function of outputting to 25.

Subsequently, the emergency stop program is, for example, that the blower fan 3 is 300 rp at 20 ° C.
When the rotation speed is set to m, and the rotation speed of the blower fan 3 is detected by the temperature detection sensor 11 due to the flow rate of the outside air flowing into the barn 1, the temperature detected by the temperature detection sensor 11 exceeds 20 ° C, or 20 ° C.
In spite of the fact that it does not fall below, the range of increase / decrease is more than 30rpm (following wind) or below the reference rotation speed (following wind) or below (head wind) ), The rotational speed data corresponding to the detected temperature is read from the memory 23, the rotational speed described in the data is compared with the actual rotational speed, and when the difference increases or decreases by 30 rpm or more, the rotational speed of the motor 21 ( This is a program having a function of outputting an energization stop command signal for stopping the operation to the motor stop means 29 described later.

The energization (operation) continuation program increases or decreases the reference temperature when the temperature in the barn 1 is set in advance or the temperature detected by the temperature detection sensor 11 (in this case, the reference temperature set in advance) In the case where the blower fan 3 continues to rotate without being affected by the outside air flowing into the barn 1), the rotational speed of the motor 21 and the memory 2
3 is compared with the rotation speed corresponding to the reference temperature in the barn 1 read out from 3, and the rotation speed is 30r.
If it is within pm, it is constituted by a program having a function of outputting to the energization command means 25 a control command signal for continuing the rotation of the electric motor 21 at the current rotation speed.

Next, the energization (operation) restart program forcibly stops the driving of the blower device 2 when the rotational speed of the blower fan 3 exceeds the reference rotational speed by 30 rpm or more or falls due to the flow rate of the outside air. After that, the idling rotation speed that is idling by the outside air into which the blower fan 3 flows, and the idling rotation speed (the setting condition for resuming the operation of the blower 2 read from the memory 23) (
In this example, when the idling rotational speed of the blower fan 3 is lower than the rotational speed at the time of restarting the operation, an energization restart command means 2 for re-driving the electric motor 21 is provided.
6 is configured by a program having a function of outputting to the computer.

In addition, the abnormality determination program is used when starting the operation of the blower 2 or when restarting the operation after the operation has been temporarily stopped due to an external factor, that is, starting energization and restarting energization of the motor 21 of the blower 2. When the rotational speed of the blower fan 3 in the motor does not reach the predetermined rotational speed corresponding to the reference or detected temperature, for example, when the rotational speed is 300 rpm at a temperature of 21 ° C., the air flow after the start of energization (re-energization restart) When the rotation speed of the fan 3 does not reach 300 rpm even after 15 seconds from energization and the lower limit rotation speed is 75 rpm or less, the control unit 24 determines that an abnormality has occurred in the electric motor 21 of the blower device 2, A function of outputting an abnormal operation stop command signal (energization stop command signal) for stopping abnormal driving of the electric motor 21 to the energization stopping means 27 described later, and the electric motor 2 being driven Decrease in rotational speed is rapidly, in which case the rotational speed is equal to or less than 75 rpm, a program having a function of outputting a control command signal for stopping the operation of the motor 21. The reason why the blower fan 3 does not reach the reference rotational speed within a predetermined time is that foreign matter such as a bag is entangled with the blower 2 to inhibit the blower fan 3 from rotating, or an abnormal current flows through the coil of the electric motor 21. This abnormality determination program is set on the assumption that the coil is disconnected and the electric motor 21 cannot be energized.

Further, the control unit 24 has a function of selecting a program corresponding to each information input to the control unit 24 from various programs, rotation speed data of the blower fan 3 processed by a predetermined program, or a control command signal. Needless to say, a program having a function of outputting to the energization command means 25 described later is included.

The energization command means 25 receives an energization continuation and rotation speed change control command signal output from the control unit 24 and an energization restart command signal output from the control unit 24 via an energization restart command means 26 described later. When inputted, it is constituted by a program having a function of outputting an energization command signal to output means 30 described later based on the inputted command signal.

Subsequently, the energization restart command means 26 described above is restarted from the control unit 24 when the blower 2 itself stops operation due to an external factor and then the idling rotation speed of the blower fan 3 is 70 rpm or less. It operates in response to an input of a control command signal for driving, outputs an energization restart command signal to the energization command means 25, and the blower 2 that has stopped blowing by the energization command signal from the energization command means 25 It is constituted by a program having a function of outputting the energization restart command signal for re-driving the electric motor 21 to the energization command means 25.

Further, the energization stopping means 27 is 1 / of the rotation speed at the time of resuming energization when the electric motor 21 is rotating at a normal rotation speed, or the rotation speed immediately after the operation of the electric motor 21 is restarted for some reason. When the rotational speed does not increase by 4 or more and the rotation speed continues for a predetermined time (for example, 15 seconds), when the abnormal operation stop command signal output from the control unit 24 is input, the notification means 28 described later immediately. And a program having a function of outputting a control command signal for notifying that the electric motor 21 is in an abnormal operation state.

When the control means signal notifying the abnormal operation of the electric motor 21 is input from the energization stop means 27, the notification means 28 is provided in the blower device 2 in the abnormal operation state, for example, a notification lamp (not shown) A function to cause the breeder to be informed of an abnormality and a motor stop means 29 which will be described later with an energization stop command signal for immediately shutting off the energization of the motor 21.
It is comprised by the program provided with the function to output to.

Subsequently, the motor stop means 29 has a function of operating immediately when an energization stop command signal output from the control unit 24 or the notifying means 28 is input and outputting an energization stop command signal to the output means 30 described later. The inverter 31 stops driving by the output of the energization stop command signal, stops the rotation of the electric motor 21, and stops the blowing by the blower fan 3.

Further, in the output means 30 described above, when energization command signals based on the control command signals for continuation of energization and change in the rotation speed output from the energization command means 25 are input, the inverter 31 corresponds to each command signal. It is constituted by a program having a function of outputting a drive command signal and a function of outputting a drive stop command signal to the inverter 31 by the input of the power stop command signal output from the power stop means 27.

The inverter 31 is driven and controlled by a drive command signal output from the output means 30, and controls the energization of the electric motor 21 to drive the electric motor 21 as a reference or at a set rotational speed to the blower fan 3. The inside of the barn 1 is configured to be ventilated and dried. Needless to say, when a drive stop command signal is input to the inverter 31, the energization of the motor 21 is immediately stopped, the drive of the motor 21 is stopped, and the blowing by the blower fan 3 is stopped.

Next, the operation of the present invention will be described based on the flowchart shown in FIG. As shown in FIGS. 1 and 2, a plurality of the blower devices 2 are installed in a plurality of rows in the barn 1 in consideration of the number of livestock to be reared, for example, or the breeding environment, with a predetermined interval between them. ) Will be described.

Initially, the driving | running condition in the normal time of the air blower 2 is demonstrated. In this case, the window 14 of the barn 1 or the door of the doorway 13 is almost open during the day except in the severe winter season or when rainwater falls into the barn 1. When the blower 2 is driven, the operating state of the blower 2 is set by manually operating various switches 15 to 18 and setting keys provided in the operation unit 8 of the operation device 6.
The operation status of the blower 2 is set by operating the controller 7 provided in the operation device 6. The controller 7 sets the rotation speed of the blower 2 in advance by setting the temperature in the barn 1, that is, setting the reference rotation speed,
Including a program for sending the rotational speed information to the drive operation control unit 20 provided in each air blower 2,
An operation program for various switches for controlling ON / OFF of the power switch 15 and the blower 2 and a database for selecting temperature / rotational speed information for setting the rotational speed of the blower fan 3 of the blower 2 are stored. ing.

First, the power switch 15 of the operating device 6 is turned on to drive the controller 7. Subsequently, the operation switch 16 is operated to input the temperature in the barn 1. In this case, if the temperature in the barn 1 is sensory or 20 ° C. by a thermometer, the operation switch 16 is operated to digitally display the set temperature information 20 ° C. on the display a (see S1 in FIG. 7). )

Next, the rotational speed setting switch 17 is operated to set the rotational speed of the blower fan 3 of the blower 2. The rotation speed setting of the blower 2 can be set according to the season, for example, in spring, summer and autumn, even at 20 ° C.
It is set in consideration of the dry state in the barn 1 and some degree of humidity. When the temperature and humidity are high like summer, or when it is likely to become hot, a relatively fast rotation speed is selected. Akiguchi is set in consideration of selecting a slightly smaller number of revolutions in the season when air is dry even at 20 ° C. Of course, when it is not necessary to stick to the rotational speed of the blower fan 3, it is needless to say that the rotational speed corresponding to the temperature is selected from the temperature / rotational speed information database by inputting the temperature.

For example, when a temperature of 20 ° C. is input and the rotation speed setting switch 17 is not operated, the rotation speed (300 rpm) corresponding to 20 ° C. is determined in this example based on the preset temperature / rotation speed information database. It is programmed so that it can be set automatically. In addition, when the rotational speed is set to 250 rpm at 20 ° C., or conversely, 350 rpm, the rotational speed to be set is operated by operating the rotational speed setting switch 17 and the reference rotational speed is input to the display b. Is displayed digitally, and the input operation of the rotational speed of the blower 2 is finished. (See S2 in FIG. 7).

Thus, when the rotation speed of the blower fan 3 is set, the operation / stop operation switch 18 of the blower 2 is turned on. When the operation / stop operation switch 18 is turned on, the set temperature / rotation speed information is output from the controller 7 to the drive operation control unit 20 of the blower 2 via the signal line 9, and the drive operation control unit 20 outputs an inverter. A drive command signal is output to 31 to drive the inverter 31 to start the electric motor 21 of the blower 2 and rotate the blower fan 3. (Fig. 7
(See S3 and S4)

As described above, when the motors 21 of the blower devices 2 are started, the blower fans 3 start to rotate at the same time, for example, at the reference rotation speed (300 rpm) of 20 ° C.
Ventilate and dry the interior. Each air blower 2 disposed in the barn 1 has a temperature detection sensor 1.
1 is input to the input unit 22 of the driving operation control unit 20 of the blower 2 including the temperature detection sensor 11 in real time.

The temperature detected by the temperature detection sensor 11 input to the input unit 22 is sent to the control unit 24. In the control unit 24, temperature data corresponding to the detected temperature is read from the memory 23, and the blower fan indicated by the temperature data is read. The number of rotations of 3 is grasped. In this case, for example, if the temperature detected by the temperature detection sensor 11 is 20 ° C., the rotation speed corresponding to the detected temperature of 20 ° C. is read from the control unit 24 and the reference rotation speed set in advance by the controller 7 is read. Contrast with

As a result of the comparison, if the temperature detected by the temperature detection sensor 11 is the same as the temperature set by the controller in advance, the drive command signal for the rotational speed of the blower fan 3 at the set temperature is sent from the control unit 24 to the energization command. Means 25-> output means 30-> output to inverter 31, drive control of the inverter 31 to rotate the electric motor 21 at a rotational speed corresponding to the set temperature, and the electric motor 21 corresponds to a temperature of 20 ° C. as before. Driven at the rotation speed (300 rpm), the rotation of the blower fan 3 is continued (see S5 and S7 in FIG. 7).

On the other hand, when the temperature detected by the temperature detection sensor 11 is higher than a preset reference temperature, for example, when 21 ° C. is detected, the detected temperature information is sent from the input unit 22 to the control unit 2.
4, the control unit 24 reads out the rotational speed corresponding to the temperature information of 21 ° C. from the memory 23 and compares it with the reference rotational speed set by the controller 7. In this case, when the reference rotation speed is 20 ° C., the detection temperature is 21 ° C. although the rotation speed is set to 300 rpm.
Therefore, the rotation speed at a temperature of 21 ° C. is 310 rpm (the rotation speed is programmed in advance to increase by 10 rpm every time the temperature rises by 1 ° C.), and is set to 310 rpm from the control unit 24. A drive command signal of the set rotation speed (set rotation speed) is output to the energization command means 25 → the output means 30 → the inverter 31.
The motor 21 is rotated by driving control so that it can rotate at 0 rpm, and the rotation speed of the blower fan 3 is changed from the reference rotation speed 300 rpm to the set rotation speed 310 rpm (see S6 and S8 in FIG. 7).

Thus, when the temperature detection sensor 11 provided in each air blower 2 has a difference with respect to the reference temperature set in advance, the detected temperature has priority, and the drive operation control unit 20 is based on the temperature information of the detected temperature. The rotation speed of the electric motor 21 is changed from the reference rotation speed to the set rotation speed, and the blower fan 3 is always rotated at a rotation speed corresponding to the actual temperature in the barn 1 to maintain a good ventilation / dry state. it can. In this case, if the detected temperature of the detected temperature sensor 11 is the same as the preset reference temperature at the installation location of the blower device 2, the blower fan 3 is set at the reference rotational speed (300 rpm) corresponding to the reference temperature (20 ° C.). Therefore, the livestock raised in the barn 1 is driven uniformly at the rotational speed of the temperature corresponding to the breeding place in the barn 1. Since the rotational speed of the blower fan 3 is set according to the breeding environment in the barn 1 without being driven by the rotational speed of the livestock, livestock can be reared with good physical condition (S7 in FIG. 7). , S9, S11).

In the above description, the embodiment in which the rotation speed of the blower fan 3 of the blower 2 is increased when the temperature in the barn 1 is raised, conversely, the temperature in the barn 1 is lower than the reference temperature (20 ° C.). In this case, for example, when the temperature detection sensor 11 detects a temperature of 18 ° C., the detected temperature is 2 ° C. lower than the reference temperature, so the drive operation control unit 20 sets the rotation speed of the blower fan 3 to the reference rotation speed ( 300 rpm) is set so as to be able to rotate at a set rotational speed (280 rpm) obtained by reducing the rotational speed by 20 rpm, so that the vicinity of the blower 2 having the temperature detection sensor 11 that detects the temperature of 18 ° C. It goes without saying that the number of rotations of the blower fan 3 can be reduced (or increased) as compared with other parts of the blower 2 that have not detected the temperature of 18 ° C. Thus, in this invention, since it controls so that the ventilation fan 3 may be rotated with the rotation speed corresponding to the temperature of the site | part for every installation place of the air blower 2, the breeding environment in the barn 1 is favorable. (See S9 in FIG. 7).

Next, a description will be given of how to deal with the case where the rotational speed of the blower fan 3 exceeds the reference rotational speed or the set rotational speed due to the flow rate of the outside air that has flowed into the barn 1 by the operating air blower 2.
In this case, for example, the blower 2 installed near the window 14 or in the vicinity of the entrance / exit 13 in the barn 1
When the rotational speed of the blower fan 3 exceeds a reference or set rotational speed for a certain period of time or more (when a tailwind is received) or falls (when a headwind is received) due to the flow velocity due to the inflow of outside air, the motor 21 When the rotation speed information signal is input to the control unit 24 via the input unit 22, the control unit 24 reads the temperature corresponding to the detected temperature of the temperature detection sensor 11 input to the control unit 24 from the memory 23. When the rotation speed input from the motor 21 and the rotation speed read from the memory 23 are compared by the emergency stop program and it is determined that the difference exceeds (below) 30 rpm, the controller 24 immediately An energization stop command signal for urgently stopping the rotation of the electric motor 21 is output to the stop means 29 (see S13 in FIG. 7).

When the energization stop command signal from the control unit 24 is input, the motor stop unit 29 outputs a drive stop command signal for stopping the drive of the inverter 31 to the output unit 30 to output the inverter 3
1 is stopped, the energization of the electric motor 21 is cut off, and the rotational movement of the electric motor 21 is stopped. As a result, the rotation of the electric motor 21 by energization is stopped, but the blower fan 3 continues to idle according to the flow rate of the outside air as long as it is affected by the outside air flowing into the barn 1. In this case, the blower 2 having the motor 21 that has been de-energized temporarily stops driving due to energization, but the blower fan 3 is idling, and the blower 2 that is energized continues to rotate. Therefore, even if the driving by energization of some of the blower devices 2 is stopped, the ventilation or dry state in the barn 1 is not impaired at all.

As described above, the control unit 24 of the drive operation control unit 20 receives the outside air flowing into the barn 1 and the blower fan 3 of the blower 2 is constant by exceeding or lowering the reference or set rotational speed by 30 rpm. When the motor rotates for more than the time, immediately after the number of rotations is detected, an energization stop command signal is output to the motor stop means 29 and the motor stop means 29 is operated to drive the motor 21 (
Since the rotation 21 is configured to stop continuation, the electric motor 21 of the blower 2 is affected by the outside air flowing into the barn 1 and disturbs the rotational speed of the blower fan 3 (rotation of the blower fan 3). Inverter 31 due to voltage increase due to the number becoming faster than necessary due to tailwind
Inversely, by reducing the rotational speed of the blower fan 3 by receiving the head wind, it is possible to avoid the damage of the coil due to the large current flowing through the coil of the electric motor 21 in advance. Since the drive of the blower 2 is temporarily stopped in response to the disturbance of the rotational speed of the blower fan 3 due to the inflow of outside air, the energy saving operation of the blower 2 in the barn 1 can be enabled, which is convenient. .

In the blower 2 that has stopped driving, the idling rotational speed of the blower fan 3 due to the inflow of outside air is always input to the control unit 24 via the input unit 22, and the inputted idling rotational speed is read from the memory 23. Idling rotational speed 7 as a re-driving condition based on the air blower re-operation information data
When it is determined that the idling speed of the blower fan 3 is 70 rpm or higher as compared with 0 rpm, the electric motor stop means 29 is continuously supplied with an energization stop command signal, and the drive of the electric motor 21 is stopped. On the other hand, the idling rotation speed of the blower fan 3 is 70 rp, which is a condition for restarting the driving of the electric motor 21.
If it is determined that it is equal to or less than m, the controller 24 immediately outputs the rotation speed information corresponding to the temperature detected by the temperature detection sensor 11 to the energization restart command means 26 as an energization restart command signal. The means 26 is operated to output an energization command signal to the output means 30, and the inverter 31 is driven (see S14 to S16 in FIG. 7).

That is, when the drive command signal is input from the output means 30, the inverter 31 is driven and controlled to re-rotate the electric motor 21 at a rotation speed corresponding to the detected temperature output from the control unit 24, and the electric motor 21 is re-driven. . The electric motor 21 is driven at a set rotational speed at a predetermined temperature by driving an inverter 31, and the blower fan 3 is rotated again to maintain the inside of the barn 1 in a ventilated / dry state suitable for breeding (in FIG. 7). (See S11 to S12). When the operation of the blower 2 is finished, the blowing is stopped by shutting off the operation switch 18. (S17 in FIG. 7
reference).

Next, when the motor 21 is being driven or when the motor 21 is re-energized and re-driven, the rotation speed of the motor 21 is equal to or less than 1/4 of the set rotation speed (for example, when the set rotation speed is 300 rpm). When the rotational speed has decreased to 75 rpm) and the rotational speed has been maintained for about 15 seconds or more, the controller 24 immediately receives the input of the rotational speed information of the electric motor 21 from the input unit 22 by the abnormality determination program. An abnormality is determined and an energization stop command signal is output to the energization stop means 27.

When the abnormal operation stop command signal is input, the energization stop means 27 immediately operates, and the notification means 28 notifies the motor 21 in the abnormal operation state with a notification lamp or the like, and the motor stop means 29 is energized. A stop command signal is output, and the drive of the inverter 31 is stopped via the output means 30. When the drive of the inverter 31 is stopped, the electric motor 21 is deenergized, stops rotating, and temporarily stops blowing by the blower fan 3.

The reason why the set rotational speed cannot be maintained when the electric motor 21 is rotating at the set rotational speed or when driving is started by resuming energization (failure of the motor 21, blower fan 3
If a foreign object is caught between the motor 21 and the motor 21, the operation of the motor 21 can be stopped immediately. Therefore, adverse effects caused by driving the motor 21 without noticing the abnormal operation (breakage of the blower fan 3, motor 21) can be favorably avoided, and thus the influence on the breeding environment in the barn 1 can be minimized, which is convenient.

As described above, the present invention immediately stops the driving of the blower 2 when the blower 2 exceeds a predetermined number of rotations due to the inflow of outside air in the barn 1, or conversely decreases. The adverse effect caused by the device 2 performing irregular driving (rotation) due to external factors can be surely eliminated, and the blower fan 3 of the blower device 2 can be idled by external factors, so that the inside of the barn 1 It is convenient because the ventilation and drying can be maintained well, and the air blower 2 itself can be operated in an energy saving manner by effectively utilizing the external factors.

It is a side view of the livestock barn which shows the attachment state of the ventilation apparatus for livestock barn of this invention. It is a front view of a livestock house. It is a block diagram which shows roughly the arrangement | positioning state of the air supply apparatus for livestock barn of this invention. It is a principal part crossing top view of the livestock which shows the state which has arrange | positioned the ventilation apparatus for livestock in the livestock. It is a block diagram which shows roughly the connection state of the air blower for livestock of this invention. It is a block diagram which shows roughly the structure of the drive operation control part provided in the ventilation apparatus for livestock. It is a flowchart figure explaining the operation | movement provided in the ventilation apparatus for livestock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Barn 2 Blower 3 Blower fan 6 Operating device 7 Controller
DESCRIPTION OF SYMBOLS 8 Operation part 11 Temperature detection sensor 15 Power switch 16 Operation switch 20 Drive operation control part 23 Memory 24 Control part 25 Energization command means 26 Energization restart command means 27 Energization stop means 28 Notification means 29 Electric motor stop means 30 Output means 31 Inverter

Claims (5)

A plurality of air blowers suspended in a straight line along the longitudinal direction in the barn, a temperature detection sensor attached to the barn to detect the temperature in the barn, and a barn from the doorway and window of the barn An air blower for a barn comprising a drive operation control unit of an air blower that controls energization stop and start of energization of the air blower according to the flow rate of outside air flowing into the air blower. In the drive operation control unit, when the blower fan of the blower deviates from a predetermined set number of rotations for a certain time or more due to the flow rate of the outside air flowing into the barn, the energization to the blower is stopped to operate the blower An air blower for a barn according to claim 1, further comprising an electric motor stopping means for stopping the operation. The drive operation control unit resumes energization to the blower when the idle rotation speed of the blower fan of the blower that idles due to the inflow of outside air when the energization of the blower is stopped is equal to or less than a predetermined set rotation speed. The livestock blower device according to claim 1, further comprising energization restart command means. In the drive operation control unit, when the blower fan does not reach the set rotational speed within a predetermined time after resuming energization to the blower, a control unit with a built-in function to determine that the drive of the blower is abnormal, The livestock fan according to claim 1, further comprising: an energization stop means for instructing to stop energization of the blower in response to a command from the controller; and an informing means for notifying an abnormal stop of the blower. apparatus. The drive operation control unit includes a control unit having a function of varying the rotation speed of the blower that rotates the blower fan of the blower at a rotation speed that follows the detected temperature in the barn, and the blower fan When the number of rotations deviates from the number of rotations following the detected temperature due to the flow rate of the outside air flowing into the barn for a certain time or more, there is provided an electric motor stopping means for stopping energization of the blower. The ventilation apparatus for livestock barn according to claim 1.

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