JPH06273045A - Control system for grain dryer on occurrence of malfunction of hot air equipment - Google Patents

Abstract

PURPOSE:To continue, even if a wind regulating fan malfunctions and to dry with hot air by cutting OFF a power source for connecting an operating unit and a wind regulator, and removing an air filter provided in a suction unit of combustion air of a burner. CONSTITUTION:When grain moisture to be detected by a moisture sensor 2 becomes the same grain moisture as a finish target moisture set by operating a moisture set knob 38, end of drying is judged. Then, a dryer is automatically stopped by an automatic control of a control board 57 to stop drying of the grains. When a malfunction occurs in a wind regulation fan during the drying and combustion air is not supplied, a power source for connecting an operation unit and a wind regulator is turned OFF, and an air filter provided in a suction unit of a burner is removed. Thus, an ON time of a fuel pump is fixedly controlled to a predetermined ON time, combustion fuel is fixedly controlled to a predetermined flow rate to become dry hot air, and drying is continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air device abnormality control system for a grain dryer.

[0002]

2. Description of the Related Art Conventionally, when the temperature of the dry hot air generated from a burner is set by setting the amount of grains and the type of grain, the dry hot air temperature is set to the set value.
The control panel provided in the operating device controls the fuel pump that supplies the combustion fuel to the burner, and the rotation of the air conditioning fan that blows the combustion air to the burner according to the supplied combustion fuel amount. The number is controlled by the wind control panel provided in the wind controller, the combustion air is supplied in proportion to the combustion fuel amount, the combustion fuel burns in the burner to become dry hot air,
Dry hot air of the set temperature is generated from this burner.

The grains contained in the grain storage chamber are fed from the storage chamber into the grain drying chamber and circulated while flowing down.
The dry hot air of the set temperature generated from the burner passes through the drying chamber and is sucked and exhausted by the air blower to be exposed to the dry hot air and dried. During this drying operation, if a malfunction occurs in the air conditioning fan and the combustion air is no longer supplied, the combustion of the burner is stopped, and the grain drying is stopped.

[0004]

When starting the drying operation of the grain, the temperature of the dry hot air generated from the burner of the grain dryer is set by setting, for example, the amount of grain to be stuck and the type of grain. In order to achieve the set dry hot air temperature, the control panel of the operating device controls the fuel pump for supplying the combustion fuel to the burner, and the combustion air is supplied according to the supplied combustion fuel amount. The rotation speed of the air conditioner fan that blows air to the burner is controlled by the air conditioner control panel of the air conditioner, and combustion air that is commensurate with the amount of fuel for combustion is supplied, and the combustion fuel burns and dries in the burner. It becomes hot air, and dry hot air of the set temperature is generated from this burner.

The grains stored in the grain storage chamber of the grain dryer are fed from the storage chamber to the grain drying chamber and circulated while flowing down while the hot dry air of the set temperature generated by the burner is fed to the drying chamber. By passing through and being sucked and exhausted by the exhaust fan,
When exposed to this dry hot air and dried, and the grain moisture during drying reaches the finishing target moisture, it is automatically controlled by the control panel,
The dryer is automatically stopped to finish the drying.

During this drying operation, if a malfunction occurs in the air conditioning fan and the combustion air is no longer supplied, the burner is stopped to stop the combustion, and the dryer is also stopped to dry the grain. Although it is stopped, even if a defect occurs in the air conditioning fan, hot air drying can be continuously performed.

[0007]

According to the present invention, the set dry hot air generated from the burner 4 is supplied to the drying chamber 9 while the grains are being fed from the upper grain storage chamber 8 to the lower grain drying chamber 9 and flowing down. The control panel 57 is provided to ventilate the air and suck the air with the exhaust fan 16 to dry it, and to control the fuel pump 20 and the like that supply the combustion fuel to the burner 4 in order to perform the operation and set the hot air temperature for drying. And an air conditioning fan 2 for supplying combustion air commensurate with the combustion fuel amount.
A wind control device 25 that incorporates a wind control panel 24 that controls 2 etc.
In the grain dryer provided with, when a malfunction occurs in the air conditioning fan 22, the power supply connecting the operating device 15 and the air conditioning device 25 is shut off, and the burner 4 sucks the combustion air. By removing the air filter 38 provided in 28, the combustion fuel amount supplied to the burner 4 is fixedly controlled to a predetermined flow rate and supplied by the fuel pump 20, and the combustion air is supplied by the exhaust fan 16. A part of the suction air to be sucked and discharged is controlled so that the combustion air is sucked from the suction portion 28 from which the air filter 38 is removed.

[0008]

When the grain drying operation is started by the grain dryer, the temperature of the dry hot air generated from the burner 4 is set by, for example, setting the amount of grain to be stuck and the type of grain. The control panel 57 of the operating device 15 controls the fuel pump 20 for supplying the combustion fuel to the burner 4 in order to achieve the set dry hot air temperature, and the combustion air is supplied by the supplied combustion fuel amount. The rotation speed of the air conditioning fan 22 that blows air to the burner 4 is controlled by the air conditioning control panel 24 of the air conditioning device 25.
Controlled by, the combustion air is supplied in proportion to the amount of combustion fuel, the combustion fuel burns in the burner 4 to become dry hot air, and the burner 4 generates dry hot air at the set temperature.

The grains stored in the grain storage chamber 8 of the dryer are fed from the storage chamber 8 to the grain drying chamber 9 and circulated while flowing down, while the dry hot air of the set temperature generated from the burner 4 is circulated. Is passed through the drying chamber 9 and is sucked and discharged by the air blower 16 to be exposed to the dry hot air to be dried, and when the moisture content of the grain being dried reaches the finishing target moisture content, the control panel 57 automatically By controlling, the dryer is automatically stopped to finish the drying.

During this drying operation, the air conditioner fan 22 malfunctions and the combustion air is no longer supplied, but when the hot air drying is continued, the control panel 57 of the operating device 15 is continued.
And the air conditioner control panel 24 of the air conditioner 25 are shut off from the power supply, and the air filter 38 provided in the combustion air intake portion 28 of the burner 4 is removed, thereby supplying combustion to the burner 4. The fuel for fuel is fixedly controlled to a predetermined flow rate, and the fuel for combustion of the predetermined flow rate is supplied by the fuel pump 20, and as for the combustion air, a part of the suction air sucked and discharged by the air exhaust unit 16 is the air. The burner 4 is sucked through the suction portion 28 from which the filter 38 is removed, and a predetermined flow rate of combustion fuel is burned by the burner 4 to produce dry hot air, and the dry hot air dries the grains.

[0011]

According to the present invention, the combustion air is supplied to the burner 4
Even if a trouble occurs in the air conditioning fan 22 that supplies to, the hot dry air of a predetermined temperature is generated without stopping control of the burner 4, and the grain drying can be continued. Even at this time, it is possible to prevent the grain from becoming uneven and the quality of the grain from being deteriorated.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The illustrated example is a circulation type grain dryer 1 for drying grains.
It shows a state in which a moisture sensor 2 for detecting the moisture of the grain and a burner 4 of a hot air device 3 for generating hot dry air are attached.

The dryer 1 has a rectangular shape that is long in the front-rear direction and has a transfer gutter 6 and a ceiling plate 7 in which a transfer spiral is rotatably installed on the upper part of the machine wall 5. Below the ceiling plate 7, grains are provided. A grain storage chamber 8 for storing grains is formed. Grain drying room 9,
In the lower side of the storage chamber 1, 9 is an exhaust chamber 10 on both the left and right sides.
10 is provided between the blower chamber 11 and the central blower chamber 11, and below these drying chambers 9 and 9, a feeding valve 1 for feeding and flowing down the grains is provided.
2 are rotatably supported respectively.

In the grain collecting trough 13, a transfer spiral is rotatably rotatably supported and provided below the respective drying chambers 9, 9 so as to communicate with each other. The burner 4 of the hot air device 3 is provided inside the burner case 14, and the burner case 14 is located on the front side of the front side machine wall 5 so as to correspond to the inlet side of the blower chamber 11.
An operation device 15 is detachably provided on the outer side surface, and a drier 1, a moisture sensor 2 and a burner 4 are attached, and an operating device 15 for starting and stopping each of drying and discharging operations is detachably provided on the front machine wall 5. . The burner case 14 is provided with an air volume sensor 14 'for detecting the presence / absence of external air flow passing through the burner case 14, and the air volume sensor 14' is turned on / off by the external air flow passing therethrough. become,
It is configured to detect that the outside air is passing.

The exhaust fan 16 is provided on the rear machine wall 5 on the central rear side exhaust cylinder 18 of the exhaust passage chamber 17 provided so as to communicate with the left and right exhaust chambers 10, 10. An exhaust fan motor 19 that rotationally drives the exhaust fan 16 is provided in the No. 5.
The valve motor 19 'drives the delivery valves 12, 12 to rotate via a reduction mechanism.

The fuel pump 20 has a fuel valve,
The burner case 14 is provided outside the lower plate, and the combustion fuel in the fuel tank 21 is suction-controlled by the opening / closing of the fuel pump 20 by opening / closing the fuel valve to supply the burner 4 with the burner 4. The wind-conditioning fan 22 is rotationally driven in a variable-speed manner by a speed-changing wind-conditioning fan motor 23, and combustion air corresponding to the supplied fuel amount is supplied to the burner 4.
It is blown with 1. On the outside of the lateral wall plate of the burner case 14, a wind control device 25 is installed which has a wind control panel 24 for controlling the rotation of the wind control fan motor 23.

The burner 4 includes a combustion section 26 and a blower tube section 2.
7. The combustion unit 26 is provided with the suction unit 28, and the combustion fuel supplied from the fuel pump 20 is supplied to the outer peripheral portion of the diffuser 30 through the fuel nozzle 29, and diffuses from the diffuser 30 to the diffusion cylinder 31. A combustion board 32 and a combustion cylinder 33, which are supplied and vaporized and in which the vaporized fuel is injected, are provided.
An ignition heater 34 is provided on the outer periphery of the No. 3 outer peripheral portion.

The blower tube portion 27 is provided with a diffusion motor 36 for rotationally driving the diffuser 30 and the diffusion tube 31 in the blower tube 35, and the air conditioning fan 22 and the air conditioning fan 22 for supplying combustion air commensurate with the amount of fuel supplied. A configuration is provided in which a wind adjustment fan motor 23 that rotationally drives the wind adjustment fan 22 is provided. The suction part 28 has a suction port 37 for sucking the outside air as combustion air.
A cylindrical air filter 38 is detachably inserted to the outside of the suction port 37 to prevent dust from entering the outside air.

The diffusion plate 39 is provided at the central portion of the bottom plate of the transfer gutter 6 in the front-rear direction and below the supply port for supplying the transfer grains to the storage chamber 8 to uniformly diffuse and reduce the grains to the storage chamber 8. ing.
The grain-sustaining machine 30 is provided on the outer side of the front side machine wall 5, is provided with a belt with a bucket conveyor 41 stretched inside, and the upper end has a throw-out tube 42 between the transfer gutter 6 and the starting end. The lower end is provided with a supply gutter 43 between the terminal end of the grain collecting gutter 13 and the lower end.

The grain elevator motor 44 is used for the bucket conveyor 4
The belt with 1, the transfer spiral in the transfer gutter 6, the transfer spiral in the diffusing plate 39 and the grain collecting gutter 13, etc. are rotationally driven. The moisture sensor 2 is provided substantially in the central portion in the vertical direction of the grain raising machine 40. The moisture sensor 2 is rotated by the moisture motor 45 when an electric measurement signal is transmitted from the operating device 15. Each part is driven to rotate, and bucket conveyor 4
In step 1, the grain is received while it is being conveyed to the upper portion, and the grain is crushed under pressure to detect the water content of the crushed grain.

The operating device 15 has a box shape, and a drier 1, a moisture sensor 2, a burner 4 and the like are put on a surface plate of the box body, and each start switch 46 is operated to start each operation of drying and discharging. , A stop switch 47 for stopping operation, and a moisture setting knob 4 for setting the finishing target moisture of the grain according to the operation position.
8. Grain type setting shaving 49 and swelling amount setting shaving 50 for setting the dry hot air temperature generated from the burner 4 according to the operating position, a display section 51 for digitally displaying various display items,
An alarm device 51 'and a monitor display are provided.

In the operating device 15 and the air conditioner 25, the connectors (A) 53 on one side provided on both sides of the cord 52 are inserted into the connectors (B) 55 provided in the operating device 15,
When the connector (A ') 54 on the other side is inserted into the connector (B') 56 provided on the air conditioner 25, the operating device 1
The control panel 57 of No. 5 and the air conditioning control panel 24 of the air conditioning device 25 are configured such that the power supplies are in a conductive state and signals can be transmitted to each other, and the connector (A) 53 on either one side. And by removing the connector (A ′) 54,
The power supply is cut off and signals cannot be transmitted.

The control board 57 is provided in the operating device 15, and the detection values detected by the moisture sensor 2 and the hot air temperature sensor 58, the operation of the switches 46 and 47, and the setting knobs 4 are performed.
Operation of 8, 49, 50, etc. is inputted, and it comprises a CPU 59, etc. for arithmetic and logical operation and comparison operation of these inputs, and each CPU 19, 59 ′, 36, 44, 4 by this CPU 59.
5, the fuel valve, the fuel pump 20, etc. are configured to be started, stopped, and adjusted and controlled. Each setting selection 48, 4
9 and 50 are of a rotary switch type, and predetermined numerical values and types are set depending on the operation position.

The control of the burner 4 by the control board 57 is as follows.
The configuration is as follows. That is, the setting knob 4
The dry hot air temperature generated from the burner 4 is set by the operation positions of 9, 50, the on-time of the fuel pump 20 is controlled so as to reach the set dry hot air temperature, and the set hot air temperature is adjusted by the control panel 57. It is input to the control panel 24, and the rotation speed of the wind adjustment fan motor 23 is controlled by the wind adjustment control board 24 according to the input on-time, and the rotation speed of the wind adjustment fan 22 is controlled. Combustion air suitable for the above condition is configured to be supplied to the combustion section 26 by the air conditioning fan 22.

During the drying operation, a trouble occurs in the air conditioning fan 22, but if it is desired to continue the hot air drying, either the connector (A) 53 or the connector (A ') 54 is removed and the air filter is further removed. The on-time control of the fuel pump 20 can be performed by removing 38.
The fuel for combustion supplied by the fuel pump 20 is fixed at a predetermined supply flow rate and supplied to the combustion unit 26, and the combustion air is fixedly controlled to a predetermined on-time set and stored in the CPU 59. A part of the sucked air that is sucked and discharged by the exhaust fan 16 is sucked from the suction port 37 of the suction unit 28 from which the air filter 38 is removed and burnt as combustion air. In addition, the fixed flow rate stored in this setting memory has a configuration in which a small flow rate is set and stored.

The control of suction air volume for drying by the control panel 57 is performed as follows. That is, the drying is started (step 101), it is detected whether the start switch 46 for starting the drying is ON (step 102), and NO.
If it is detected, the routine returns to step 102, and if YES is detected, it is detected whether the blower motor 19 is ON (step 1
03), if YES is detected, a normal grain drying process is performed (step 104).

When NO is detected in step 103, it is detected whether the air volume sensor 14 'is ON (step 105), and N
When O is detected, the process returns to step 102, and when YES is detected, the alarm device 51 'is activated to issue an alarm (step 106). By the above control, even if the start switch 46 for starting drying is turned on, the immediate exhaust fan 16 is not rotationally driven. If the air volume sensor 14 'is turned on immediately after the start switch 46 is turned on, When the air volume sensor 14 'detects an abnormality, and accordingly, when the exhaust fan 16 is not rotationally driven, the air volume sensor 14' is checked, and if it is ON, the hot air drying is not performed, which causes a fire. It has a configuration that can prevent it.

The control of the suction air volume abnormality detection for drying by the control board 57 is configured as follows. That is, the drying is started (step 201), and it is detected whether the start switch 46 for starting the drying is ON (step 2).
02), if NO is detected, the process returns to step 202 and Y
When ES is detected, it is detected that the air volume sensor 14 'is OFF (step 203), and when NO is detected, it is detected that the air volume sensor 14' is abnormal (step 204), and YES.
If it is detected that the exhaust fan motor 19 is ON (step 205), if NO is detected, the flow returns to step 202, and if YES is detected, the air flow sensor 14 'is turned ON.
Is detected (step 206), and if YES is detected, the outputs of the fuel valve of the combustion system, the fuel pump 20, and the air conditioning fan motor 23 are turned on (step 207), and the drying is completed (drying is completed) ( Step 208).

When it is detected as ON in step 206, it is detected whether a certain time has elapsed (step 209), when NO is detected, the process returns to step 206, and when YES is detected, it is detected that the air volume is insufficient. (Step 2
10). According to the above control, when it is confirmed that the air volume sensor 14 'is normally turned OFF-ON at the start of the drying operation, the combustion is started, so that the air volume sensor 14' remains in the defective state. Never driven
It is designed to prevent fires.

The operation of the above embodiment will be described below. By operating the setting scoops 48, 49, 50 of the operating device 15 to predetermined positions and operating the start switch 46 for starting the drying operation, each part of the grain dryer 1 and the hot air device 3 are operated.
The burner 4, the moisture sensor 2, etc. of the
Dry hot air temperature is set by the operation position of 9, 50,
The control panel 57 of the operating device 15 is controlled to achieve this set hot air temperature.
, The on-time of the fuel pump 20 is set, the fuel pump 20 is controlled, the combustion fuel is supplied to the combustion section 26 of the burner 4, and the air condition control panel 24 of the air conditioner 25 is supplied from the control panel 57. The on-time of the fuel pump 20 is input to the air-conditioning fan 22, and the rotation speed of the air-conditioning fan motor 23 that blows combustion air to the burner 4 is controlled by the supplied fuel amount according to the input on-time. Is controlled to rotate, and the combustion air, which is commensurate with the combustion fuel, is supplied to the combustion section 26 by the air conditioning fan 22 and burns to become dry hot air, and the dry hot air is generated from the burner 4. The dry hot air passes through the grain drying chambers 9, 9 from the air blowing chamber 11, passes through the air exhaust chambers 10, 10 and the air exhaust passage chamber 17, and is sucked and exhausted by the air exhaust unit 16.

The grains stored in the grain storage chamber 8 are dried by being exposed to the hot air while flowing down from the storage chamber 8 into the drying chambers 9 and 9, respectively, and are dried by the feeding valves 12 and 12. Is fed to the grain collecting gutter 13 through the supply gutter 43, is fed by the lower transfer spiral into the grain raising machine 40, is conveyed by the bucket conveyor 41 to the upper part, and is conveyed through the throw-out cylinder 42. 6 is supplied to the inside of the storage gutter 6, and is transferred from the transfer gutter 6 onto the diffusion plate 39 by an upper transfer spiral, and is supplied to the storage chamber 8 by the diffusion plate 39.
It is uniformly diffused and reduced into the inside and circulated and dried.

When the grain moisture detected by the moisture sensor 2 is the same as the finishing target moisture set by operating the moisture setting knob 48, it is detected that the drying is completed and the control is performed. The board 57 is automatically controlled to automatically stop the dryer 1, and the drying of the grain is stopped. During this drying operation, a problem occurs in the air conditioning fan 22 and the combustion air is no longer supplied. However, when it is desired to continue hot air drying, the cord 52 connecting the operating device 15 and the air conditioning device 25 is connected. Either the connector (A) 53 or the connector (A ′) 54 is removed to shut off the power supply connecting the operating device 15 and the air conditioner 25, and the burner 4 and the suction port 37 of the suction unit 28 are connected. By removing the air filter 38, the on-time of the fuel pump 20 for supplying the combustion fuel to the combustion section 26 of the burner 4 is fixedly controlled to a predetermined on-time, and the combustion fuel is fixedly controlled to a predetermined flow rate. This predetermined flow rate of combustion fuel is supplied by the fuel pump 20, and the combustion air is sucked and discharged by the blower 16 so that part of the suction air is removed by removing the air filter 38. Is sucked from the suction inlet 37 of the join the club 28, the combustion fuel of a predetermined flow rate which is fixed in the combustion portion 26 of the burner 4 is a combustion to dry hot air is dried in this drying hot air.

[Brief description of drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 Block diagram

FIG. 2 is an enlarged perspective view of a main part.

[Fig. 3] Side view of the grain dryer that can be partially broken

FIG. 4 is an enlarged sectional view taken along line AA of FIG.

FIG. 5 is an enlarged side sectional view of the burner.

FIG. 6 is an enlarged rear view of the burner.

FIG. 7 is an enlarged front view of the operating device.

FIG. 8 is a flowchart

FIG. 9 is a flowchart

[Explanation of symbols]

 4 Burner 8 Grain storage chamber 9 Grain drying chamber 15 Operating device 16 Air blower 20 Fuel pump 22 Air conditioning fan 24 Air conditioning control panel 25 Air conditioning device 28 Intake section 38 Air filter 57 Control panel

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Keiichi Miyazaki, No. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Shinji Ninomiya No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Pref.Iseki Agricultural Machinery Co., Ltd. (72) Inventor Tomoyuki Ishida, No. 1 Yakura, Tobe-cho, Iyo-gun Ehime Pref.

Claims (1)

[Claims] 1. The set dry hot air generated from the burner 4 is ventilated to the drying chamber 9 by the blower 16 while the grains are being fed from the upper grain storage chamber 8 to the lower grain drying chamber 9 and flowing down. An operating device 15 which is provided for sucking and exhausting air to be dried, and which has a control panel 57 for controlling a driving operation and a fuel pump 20 for supplying combustion fuel to the burner 4 so as to achieve a set dry hot air temperature, and A wind-conditioning control panel 2 for controlling a wind-conditioning fan 22 for supplying combustion air in proportion to the amount of combustion fuel.
4 in the grain dryer provided with the air conditioning device 25, when a failure occurs in the air conditioning fan 22, the power source connecting the operating device 15 and the air conditioning device 25 is shut off, and the burner 4 Of the burner 4 by removing the air filter 38 provided on the combustion air suction part 28
The amount of the combustion fuel to be supplied to is fixedly controlled to a predetermined flow rate and is supplied by the fuel pump 20, and the combustion air is sucked and exhausted by the exhaust fan 16 so that a part of the sucked air is passed through the air filter 38. A control system at the time of abnormality occurrence of a hot-air device, characterized in that the combustion air is controlled so as to be sucked from the removed suction portion 28.