JP4089169B2 - Far-infrared grain dryer radiator structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiator structure of a far-infrared grain dryer, and in particular, has been given to the user due to a problem that the parts of the burner are exposed to high temperatures, a problem that the far-infrared radiator is locally overheated, and the red heat of the far-infrared radiator The present invention relates to a radiator structure of a far-infrared grain dryer that can eliminate anxiety.
[0002]
[Prior art]
Grain dryers for drying grains such as rice and wheat are those for drying grains such as rice and wheat that are in a cocoon state before milling, and there are circulation type and flat type grain dryers.
[0003]
The circulation type grain dryer is provided with a storage part into which the grains are put in order from the top, a drying part for drying the grains, and a cereal collecting part for collecting the dried grains in the main body of the dryer. Then, the cereal is dried by hot air or far infrared rays in the drying section while being led to the lower cereal collecting section through the middle drying section and then returned to the upper storage section and circulated.
[0004]
Then, when using the far infrared ray in the grain dryer, that is, when drying the grain by the far infrared grain dryer, the drying unit 108 of the far infrared grain dryer (not shown), as shown in FIGS. A burner 132 and a far-infrared radiator 138 are disposed.
[0005]
At this time, the burner 132 burns liquid fuel to generate hot air, heats the far-infrared radiator 138 with the hot air, emits far-infrared rays, and dries the grains.
[0006]
As such grain dryers, there are those disclosed in JP-A-8-14746, JP-A-9-113140, and JP-A-10-82586.
[0007]
JP-A-8-14746 discloses a far-infrared radiation chamber for radiating and ejecting far-infrared radiant heat and hot air downward to a flowing grain in a storage tank. Japanese Patent Application Laid-Open No. 9-113140 discloses a radiator tube as a far-infrared radiator provided in a hot air chamber, a burner provided at one end of the radiator tube, and the other end of the radiator tube opened in the hot air chamber. Is. Japanese Patent Application Laid-Open No. 10-82586 has a far-infrared radiator facing a part where the grain flows, and rotates the far-infrared radiator so that the surface facing the flowing grain is changed. Is.
[0008]
[Problems to be solved by the invention]
By the way, in the conventional far-infrared grain dryer, as shown in FIG. 13, the burner 132 and the far-infrared radiator 138 are connected so as to be in close contact with each other.
[0009]
As a result, there is a disadvantage that the components of the burner may be exposed to a high temperature, for example, higher than the operating temperature due to heat transfer from the heated far-infrared radiator to the burner.
[0010]
And in a very large grain dryer, the situation where a burner is exposed to high temperature is remarkable, and there exists a problem that durability of the components of a burner falls.
[0011]
In addition, by directly connecting the far-infrared radiator to the burner, the far-infrared radiator will be locally overheated and red-hot, and the durability of the far-infrared radiator will be reduced, and the user will feel uneasy. There is also a disadvantage that it is disadvantageous in practice.
[0012]
[Means for Solving the Problems]
Therefore, in order to eliminate the above-described inconveniences, the present invention is provided with an upper storage unit, an intermediate drying unit, and a lower cereal collecting unit in a dryer main body that is long in the front-rear direction, and the storage unit in the drying unit. A flow path that extends in the front-rear direction is provided in communication with the grain collection unit, a far-infrared radiation chamber that extends in the front-rear direction is provided adjacent to the flow path, and a burner is provided on the front side of the dryer main body outside the drying unit. In addition, an exhaust fan is provided on the rear side of the dryer main body, and a far-infrared radiator having a substantially cylindrical shape with one end connected to the burner and the other end positioned in the vicinity of the exhaust fan is provided in the far infrared radiation chamber. In the far-infrared grain dryer, a tapered connecting pipe that gradually expands from the burner side toward the far-infrared radiator side is provided between the burner and the far-infrared radiator to prevent local heating of the far-infrared radiator. For far infrared A sleeve is provided inside the radiator, and the sleeve is disposed inwardly from the connecting pipe mounting end surface of the far-infrared radiator, and the sleeve is arranged at the downstream end of the sleeve so as to be smaller than the outer dimension. A resistor for reducing the passage cross-sectional area of the portion is provided .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
By inventing as described above, in the far-infrared grain dryer provided with the far-infrared radiator, a tapered connecting pipe that gradually expands from the burner side toward the far-infrared radiator side between the burner and the far-infrared radiator. The burner parts are not exposed to high temperatures, improving the durability of the burner parts, extending the life of the parts, preventing the far-infrared radiator from overheating locally, and preventing the far-infrared radiator from red-hot. , The anxiety given to the user is solved.
In addition, a cylindrical sleeve is disposed inside the far-infrared radiator to reduce local heating of the far-infrared radiator.
Further, a sleeve is arranged inwardly from the connecting pipe mounting end face of the far-infrared radiator to reduce radiation to the burner side.
Furthermore, the passage cross-sectional area of the downstream end portion of the sleeve is reduced, and a resistor is provided so as to be smaller than the outer dimension, thereby reducing the amount of carbon generated and ensuring a good combustion state.
[0014]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0015]
1 to 11 show an embodiment of the present invention.
[0016]
10 and 11, 2 is a circulation type far-infrared grain dryer, 4 is a dryer body, 6 is a storage unit, 8 is a drying unit, and 10 is a grain collecting unit.
[0017]
In the far-infrared grain dryer 2, a front plate 12, a rear plate 14, and a side plate 16 form a dryer body 4 that is long in the front-rear direction. In the dryer main body 4, a storage unit 6 into which grains are charged, a drying unit 8 for drying the grains, and a cereal collecting unit 10 for collecting the dried grains are provided in order from the top.
[0018]
Further, the far-infrared grain dryer 2 is provided with a cerealing machine 18 on the front plate 12 side of the dryer body 4, and provided with an upper conveying means 20 connected to the upper part of the cerealing machine 18 above the storage unit 6. Lower conveying means 22 connected to the lower part of the cerealing machine 18 is provided below the part 10.
[0019]
Furthermore, the far-infrared grain dryer 2 drops the grains lifted by the cerealing machine 18 equally into the storage unit 6 by the upper conveying means 20, collects them in the cereal collecting unit 10 after drying in the drying unit 8, The cereal is dried by repeating the circulation of conveying to the lower part of the cerealing machine 18 by the conveying means 22 and lifting again.
[0020]
In the drying unit 8, as shown in FIG. 11, there is provided a flowing grain path 24 that connects the storage unit 6 and the grain collecting unit 8 and extends in the front-rear direction of the dryer body 4. A far-infrared radiation chamber 26 extending in the front-rear direction of the dryer main body 4 is provided adjacently.
[0021]
In this embodiment, two flowing cereal paths 24 partitioned by a breathable ventilation member 28 made of a perforated plate, a net-like member, or the like are provided symmetrically spaced apart from each other in the width direction. A far-infrared radiation chamber 26 extending in the direction is provided, and a wind exhaust chamber 30 extending in the front-rear direction is provided between each side plate 16 outside the two flow passages 24.
[0022]
As shown in FIG. 10, the far-infrared grain dryer 2 is provided with a gun-type burner 32 for generating hot air by burning liquid fuel on the front side of the dryer body 4 outside the dryer 8, and at the outside of the dryer 8. On the rear side of the dryer main body 4, an exhaust fan 34 that sucks and exhausts hot air from the exhaust chamber 30 is provided. The burner 32 is attached to the front plate 12, and the exhaust fan 34 is attached to the rear plate 14.
[0023]
The burner 32 and the exhaust fan 34 are controlled by a control unit 36 attached to the front plate 12. The control unit 36 controls the burner 32 and the exhaust fan 34 to generate hot air for drying the grains and to discharge the hot air after drying. Also, the control unit 36 controls the masher 18, the upper transport unit 20, and the lower transport unit 20. Each motor (not shown) is controlled to circulate the grain.
[0024]
The far-infrared grain dryer 2 is provided with a substantially cylindrical far-infrared radiator 38 having one end connected to the burner 32 and the other end positioned in the vicinity of the exhaust fan 34 in the far-infrared radiation chamber 26.
[0025]
As shown in FIGS. 6 and 7, the far-infrared radiator 38 is formed of a plate-like member in a substantially cylindrical shape having a radiator passage 40 therein.
[0026]
The far-infrared radiator 38 emits far-infrared radiation by heating a far-infrared radiation material such as ceramic attached to the surface by hot air flowing through the radiator passage 40.
[0027]
In addition, a burner side mounting portion 42 that communicates with the burner 32 is provided on one end side of the far-infrared radiator 38. The burner side mounting portion 42 is provided with a communication hole 44 through which hot air from the burner 32 flows. The far-infrared radiator 38 closes the other end side, and a curved tube passage 46 having an arcuate cross section is provided above the closed portion.
[0028]
Above the closed part on the other end side of the far-infrared radiator 38, one end side of a curved tube 48 having a circular arc cross section that functions as a return tube is connected.
[0029]
That is, as shown in FIG. 7, the bending tube 48 is connected to the lower end side, which is one end side, above the closed portion on the other end side of the far-infrared radiator 38, and is directed upward to one end side of the far-infrared radiator 38. By bending in such a manner, a circular arc shape having the curved tube passage 46 inside is formed.
[0030]
One end of the hot air tube 50 is connected to the other end of the bending tube 48. The hot air pipe 50 is formed of a plate-like member in a substantially cylindrical shape having a hot air pipe passage 52 inside. The hot air pipe 50 is disposed in parallel above the far infrared radiator 38 and opens the hot air outlet 54 of the hot air pipe passage 52 in the vicinity of the burner side mounting portion 42 on one end side of the far infrared radiator 38 on the other end side. Provided.
[0031]
The far-infrared radiator 38 is disposed on a rail (not shown), and an upper part of the far-infrared radiator 38 and a lower part of the hot air tube 50 are connected in parallel. Then, as shown in FIG. 2, a thermostat 58 is provided on the hot air pipe 50 via a thermostat mounting portion 56.
[0032]
At this time, a tapered connecting pipe 60 is provided between the burner 32 and the far-infrared radiator 38 so as to gradually expand from the burner 32 side toward the far-infrared radiator 38 side.
[0033]
More specifically, as shown in FIGS. 1 and 2, a connecting pipe 60 is disposed between the burner 32 and the burner side mounting portion 42 at one end of the far-infrared radiator 38.
[0034]
As shown in FIGS. 4 and 5, the connecting pipe 60 includes a small-diameter annular portion 60-1 attached to the burner 32 and a large-diameter annular portion 60 attached to the burner-side attachment portion 42 on one end side of the far-infrared radiator 38. -2 and a tapered surface portion 60-3 connecting the small-diameter annular portion 60-1 and the large-diameter annular portion 60-2.
[0035]
Further, in order to prevent local heating of the far-infrared radiator 38, a sleeve 62 formed in a cylindrical shape by a plate member is disposed inside the far-infrared radiator 38.
[0036]
At this time, when the sleeve 62 is disposed, as shown in FIG. 7, the sleeve 62 is separated from the burner side mounting portion 42, which is the connecting pipe mounting end surface of the far-infrared radiator 38, inward by, for example, several centimeters. A sleeve 62 is disposed.
[0037]
Further, the sleeve 62 is provided with a resistor 64 for reducing the passage cross-sectional area of the downstream end portion of the sleeve 62 so as to be smaller than the outer dimension.
[0038]
That is, as shown in FIGS. 8 and 9, the resistor 64 is formed in an annular shape by a plate-like member, and the resistor 64 is attached to the downstream end of the sleeve 62 so that the passage of the downstream end of the sleeve 62 is cut off. The area is narrowed down.
[0039]
Next, the operation will be described.
[0040]
When drying of the grain by the far-infrared grain dryer 2 is started, the burner 32 starts to burn, and the burner 32 burns while repeating ON / OFF operation so that the drying temperature becomes a set value.
[0041]
The far-infrared radiator 38 is heated by the hot air generated by the burner 32, and far-infrared radiation is radiated from the surface of the far-infrared radiator 38. At the same time, the hot air from the burner 32 is heated at the other end of the far-infrared radiator 38. It returns to the burner 32 side through the bending tube passage 46 of the bending tube 48 and the hot air tube passage 52 of the hot air tube 50 connected above the closed portion on the side, and is mixed with the outside air through the front plate 12 from the hot air outlet 54. . At this time, the hot air from the burner 32 reaching the back side of the front plate 12 is diverted in the lower left and lower right directions by the front plate 12 functioning as an outside air / hot air mixing unit, and is mixed with the outside air.
[0042]
The grain is dried by both far-infrared radiation by the far-infrared radiator 38 and hot air flowing through the hot-air tube passage 52 of the hot-air tube 50.
[0043]
In addition, when drying the grain stretched to near the full amount of the far-infrared grain dryer 2, hot air of 50 to 50 degrees is required, and the burner 32 needs to be burned in the vicinity of the maximum combustion.
[0044]
At this time, the burner side of the far-infrared radiator 38 is locally heated by the combustion flame of the burner 32, but the tapered connecting tube 60 provided between the burner 32 and the far-infrared radiator 38 is used. Even if the heat transfer from the far-infrared radiator 38 to the burner 32 is reduced and the burner 32 is continuously burned, the use limit temperature of parts of the burner 32 is not exceeded.
[0045]
The cylindrical sleeve 62 disposed inside the far infrared radiator 38 alleviates local heating of the far infrared radiator 38.
[0046]
Further, the sleeve 62 disposed inwardly from the burner side mounting portion 42, which is the connecting pipe mounting end surface of the far-infrared radiator 38, by a distance of, for example, several centimeters, reduces the radiation toward the burner side.
[0047]
Furthermore, the resistor 64 provided by reducing the passage cross-sectional area at the downstream end of the sleeve 62 so as to be smaller than the outer dimension realizes combustion with a small amount of carbon generation.
[0048]
Thereby, the tapered connecting pipe 60 provided between the burner 32 and the far-infrared radiator 38 prevents the components of the burner 32 from being exposed to high temperature, and the durability of the components of the burner 32 can be improved. The life of the parts can be extended, which is economically advantageous, the far-infrared radiator 38 is not locally overheated, the period of maintenance and inspection can be extended, and the far-infrared radiator 38 is not red-hot. It can eliminate the anxiety that has been given and is practically advantageous.
[0049]
Further, by providing the cylindrical sleeve 62 inside the far infrared radiator 38, local heating of the far infrared radiator 38 can be mitigated.
[0050]
Further, the sleeve 62 is disposed inwardly from the burner side mounting portion 42, which is the connecting pipe mounting end surface of the far-infrared radiator 38, for example, by several centimeters, thereby reducing radiation to the burner side. Is practically advantageous.
[0051]
Furthermore, by reducing the passage cross-sectional area of the downstream end of the sleeve 62 and providing the resistor 64 so as to be smaller than the outer dimensions, the amount of carbon generated can be reduced and good combustion can be achieved. A state can be secured.
[0052]
The present invention is not limited to the above-described embodiments, and various application modifications are possible.
[0053]
For example, in the embodiment of the present invention, when a cylindrical sleeve is disposed inside the far infrared radiator, the inner side from the burner side mounting portion which is the connecting pipe mounting end surface of the far infrared radiator, for example, Although the sleeve is arranged by being separated by several centimeters, a special configuration in which a heat-resistant member is provided at the separated portion is also possible.
[0054]
That is, when the sleeve is arranged, for example, several centimeters away from the burner side attachment portion, which is the connecting pipe attachment end surface of the far-infrared radiator, for example, a heat-resistant member is positively provided at this separation portion. .
[0055]
Then, the local heating of the far-infrared radiator can be alleviated and the radiation to the burner can be reduced.
[0056]
In the embodiment of the present invention, in order to reduce the passage cross-sectional area of the downstream end portion of the sleeve, an annular resistor is provided so as to be smaller than the outer dimension. Therefore, it is possible to adopt a special configuration in which the resistor is shaped like a funnel.
[0057]
In other words, when hot air from the burner flows into the far-infrared radiator, the flow of hot air is smoothed by the funnel-shaped resistor, which is practically advantageous.
[0058]
【The invention's effect】
As described above in detail, the present invention is provided with an upper storage section, an intermediate drying section, and a lower cereal collection section in a dryer main body that is long in the front-rear direction, and the storage section and the cereal collection section are connected in the drying section. In addition, a flow path that extends in the front-rear direction is provided, a far-infrared radiation chamber that extends in the front-rear direction is provided adjacent to the flow path, a burner is provided on the front side of the dryer body outside the drying unit, and a rear side of the dryer body In a far-infrared grain dryer provided with a wind blower and provided with a substantially cylindrical far-infrared radiator in which one end is connected to the burner in the far-infrared radiation chamber and the other end is located in the vicinity of the blower. A tapered connecting pipe that gradually expands from the burner side toward the far-infrared radiator side is provided between the infrared radiators, so that the burner parts are not exposed to high temperatures and the durability of the burner parts is improved. The life of the parts In addition to being economically advantageous, the far-infrared radiator is not overheated locally, the maintenance and inspection period can be extended, and the far-infrared radiator does not become red hot, eliminating the sense of anxiety given to users. This is practically advantageous.
Moreover, local heating of the far-infrared radiator can be mitigated by arranging a cylindrical sleeve inside the far-infrared radiator.
Furthermore, by arranging the sleeve away from the connecting pipe mounting end surface of the far-infrared radiator inward, radiation to the burner side can be reduced, which is practically advantageous.
Furthermore, by reducing the passage cross-sectional area of the downstream end of the sleeve and providing a resistor so as to be smaller than the outer dimensions, the amount of carbon generated can be reduced, and a good combustion state can be achieved. It can be secured.
[Brief description of the drawings]
FIG. 1 is a right side view of a burner mounted on a far-infrared grain dryer showing an embodiment of the present invention.
FIG. 2 is a front view of a burner.
FIG. 3 is a plan view of the burner.
FIG. 4 is a central longitudinal sectional view of a connecting pipe.
FIG. 5 is a front view of a connecting pipe.
FIG. 6 is a front view of a far-infrared radiator.
FIG. 7 is a right side view of the far-infrared radiator.
FIG. 8 is a schematic front view of a sleeve.
FIG. 9 is a right side view of the main part cutout of the sleeve.
FIG. 10 is a front view of a far-infrared grain dryer.
FIG. 11 is a left side view of the far-infrared grain dryer.
FIG. 12 is a right side view of a burner mounted on a far-infrared grain dryer showing the prior art of the present invention.
FIG. 13 is a front view of the burner.
FIG. 14 is a right side view of the far-infrared radiator.
FIG. 15 is a front view of a far-infrared radiator.
[Explanation of symbols]
2 Far-infrared grain dryer 4 Dryer main body 6 Storage unit 8 Drying unit 10 Grain collecting unit 18 Graining machine 20 Upper conveying means 22 Lower conveying means 24 Flowing grain 26 Far-infrared radiation chamber 28 Ventilation member 30 Ventilation chamber 32 Burner 34 exhaust fan 36 control unit 38 far-infrared radiator 40 radiator passage 42 burner side attachment portion 44 communication hole 46 bending tube passage 48 bending tube 50 hot air tube 52 hot air tube passage 54 hot air outlet 56 thermostat attachment portion 58 thermostat 60 connection tube 60 -1 Small-diameter annular portion 60-2 Large-diameter annular portion 60-3 Tapered surface portion 62 Sleeve 64 Resistor

Claims (1)

An upper storage part, an intermediate drying part, and a lower cereal collecting part are provided in the dryer main body that is long in the front-rear direction, and the cereal that extends in the front-rear direction by connecting the storage part and the cereal collecting part in the drying part A far-infrared radiation chamber extending in the front-rear direction is provided adjacent to the flow path, and a burner is provided on the front side of the dryer main body outside the drying unit, and a blower is provided on the rear side of the dryer main body, In the far-infrared grain dryer provided with a substantially cylindrical far-infrared radiator whose one end is connected to the burner in the far-infrared radiation chamber and whose other end is located near the exhaust fan, the burner and the far-infrared radiation A tapered connecting pipe that gradually expands from the burner side toward the far-infrared radiator side between the bodies, and a sleeve inside the far-infrared radiator to prevent local heating of the far-infrared radiator, This And a resistor that restricts the passage cross-sectional area of the downstream end of the sleeve so that the sleeve is smaller than the outer dimension. A radiator structure of a far-infrared grain dryer characterized by being provided .

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