JPH1163827A - Fresh air suction device of grain drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a burner and a burner case from being heated to a high temperature through thermal radiation, by sucking fresh air into a burner case equipped with a burner and allowing the sucked fresh air to pass through an interior of the burner case. SOLUTION: Fresh air sucked through an fresh air suction case 5a outside of a ventilation passage case 4b, and hot air generated by a burner 3 installed in a burner case 13 formed in a gas-exhausting chamber 9 between grain drying chambers 8, 8, are mixed within the ventilation passage case 4b so as to be changed into dry hot air, which is then permitted to move across the drying chamber 8 via a ventilation chamber 10. A plurality of fresh air suction openings for sucking fresh air are provided in a machine wall 4 located above the ventilation passage case 4b at a front side, on which the ventilation passage case 4b is installed, and fresh air sucked through the fresh air suction openings is blown into the ventilation passage case 4b via an interior of the burner case 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outside air suction device for sucking outside air into a burner section used in a grain dryer for drying grains and for blowing air.

[0002]

2. Description of the Related Art Hot air generated from a burner mounted in a burner case provided in an air discharge chamber is supplied to a hot air blown into an air flow path chamber formed by an air flow path case and an outside air provided outside the air flow path case. The outside air that is sucked into the suction case and blown into the ventilation path chamber is mixed in the ventilation path chamber to become dry hot air.

[0003] The dried hot air passes through the respective grain drying chambers from the ventilation path chamber through the respective ventilation chambers, passes through the ventilation path chamber formed from the ventilation chamber, and is used by the exhaust fan through the ventilation path chamber formed by the ventilation path case. Hot air is exhausted outside the machine. The grains flowing down in each of the drying chambers are dried by being exposed to dry hot air, and this drying is repeated, and the grains are dried until reaching a predetermined moisture value.

[0004]

The outside air is not sucked into the burner case in which the burner is mounted. Therefore, the outside air does not pass through the burner portion, so that the burner case and the burner are radiated by radiant heat. However, high temperatures may occur, which may cause poor combustion of the burner or a fire. However, the present invention is intended to solve this problem.

[0005]

In order to achieve this, the present invention provides an air passage case 4b which forms an air passage chamber 4a for blowing dry hot air in which hot air and outside air are mixed on the outer surface of the front machine wall 4. And an outside air suction case 5a for sucking outside air to the outside surface of the air passageway case 4b and blowing the air to the airflow passage room 4a, and exhaust air for exhausting used dry hot air on the outside surface of the rear machine wall 4. An exhaust path case 16a in which a path chamber 16 is formed and an exhaust fan 15 is mounted; and grain drying chambers 8, 8 on both the left and right sides at predetermined intervals between the front and rear machine walls 4, 4; An exhaust chamber 9 communicating with the exhaust path chamber 16 between the insides of the exhaust chambers 8, 8, and blower chambers 10, 10 communicating with the air path chamber 4 a on both left and right sides outside the drying chambers 8, 8. A burner case 13 forming a burner chamber 13a is provided in the exhaust chamber 9 on the side of the blower passage chamber 4a, and a front side is provided in the burner chamber 13a. A burner 3 mounted to blow hot air toward the air blower, and an outside air suction port 10a for sucking outside air into the front side of the machine wall 4 at an upper portion of the blowing path case 4b and blowing the outside air to the burner chamber 13a. The outside air suction device of the grain dryer is characterized in that a plurality thereof are provided at predetermined intervals.

[0006]

The hot air generated from the burner 3 mounted in the burner case 13 provided in the air discharge chamber 9 is blown into the air flow path chamber 4a formed by the air flow path case 4b and the hot air. Outside air suction case 5 provided outside road case 4b
a, and is blown into the blowing path chamber 4a.
Outside air sucked from a plurality of outside air intake ports 10a provided on the front wall 4 at the upper portion of the air passage case 4b is blown into the burner case 13, and the air passage chamber 4a The outside air blown into the inside and blown into the blowing path chamber 4a is mixed in the blowing path chamber 4b to become dry hot air.

[0007] The dried hot air passes through the drying chambers 8 and 8 from the ventilation path chamber 4b through the respective ventilation chambers 10 and 10, and flows from the ventilation chamber 9 to the ventilation path chamber 16 formed by the ventilation path case 16a. The hot dry air used in the exhaust unit 15 is exhausted to the outside of the unit. The grains flowing down in the respective drying chambers 8, 8 are dried by being exposed to dry hot air, and this drying is repeated, and the grains are dried until reaching a predetermined moisture value.

[0008]

The burner 3 mounted in the burner case 13
Of the burner case 13 and the burner 3 are prevented from being heated to a high temperature by radiant heat when the outside air sucked from each outside air intake port 10a provided on the machine wall 4 passes around the periphery of the burner 3. Poor combustion and occurrence of fire can be prevented.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. The figure shows a circulation type grain dryer 1 for drying grains.
1 shows a state in which a moisture sensor 2 for detecting moisture in a grain and a burner 3 for generating hot air are mounted. The dryer 1 is provided with a transfer gutter 5 and a ceiling plate 6 in which a transfer spiral is rotatably mounted on the upper portion of the machine wall 4 in a rectangular shape long in the front-rear direction. Is formed between the falling plates 7a, 7a inclined downward and inward on both left and right sides, and a mountain-shaped falling plate 7b at the center of the storage chamber 7 below the storage chamber 7. Downflow chambers 7c, 7c are formed to communicate with the storage chamber 7.

The grain drying chamber 8 includes drying nets 8a on both right and left sides.
8a, for example, two rows are provided, and this drying chamber 8,
8 is provided below the downflow chambers 7c, 7c.
7c. The air discharge chamber 9 is provided between the insides of the drying chambers 8 and 8 below the central falling plate 7b. The blower chambers 10, 10 are provided outside the drying chambers 8, 8 below the flow-down plates 7a on both left and right sides. In the blower chamber 10, a hot air temperature sensor 55 for detecting the temperature of dry hot air, which will be described later, is provided.

At the lower part of the drying chambers 8, 8, a feed valve 11 for feeding and flowing down grains is rotatably supported, respectively. The collecting gutter 12 rotatably supports a transfer spiral and is provided below each of the drying chambers 8 and 8 so as to communicate with each other. Drying room 8
On the outer surface of the front machine wall 4 where is located, a front plate, an upper / lower plate, and a left / right plate are formed in a box shape, and a ventilation path case 4b forming a ventilation path chamber 4a is detachably provided. The front plate of the air passage case 4b is provided with a front air inlet 4c for inhaling and introducing outside air, and the air passage case 4b is located therein, and each of the air chambers 10, 10 and each of the drying chambers 8, 8 are provided. On the front side machine wall 4 where the air conditioner and the like are located, there are provided rear inlets 4d, 4d for feeding dry hot air in which hot air and outside air described later are mixed. The left and right plates of the air passage case 4b are provided with a plurality of outside air intake ports 4e having a predetermined length in the front-rear direction for sucking outside air at predetermined intervals in the vertical direction.

The width of the front air inlet 4c of the air passage case 4b is wider than the entire width of the burner 3 by a predetermined width.
When the burner 3 is attached and detached, the burner 3 can be easily attached and detached. An outside air suction case 5a formed in a box shape by the front plate, the upper and lower plates, and the left and right plates is detachably provided on the outer surface of the front plate of the air passage case 4b. A net-shaped suction case cover 5b is provided on the front plate of the outside air suction case 5a. The outside air sucked from the suction case cover 5b is blown from the outside air suction case 5a through the front inlet 4c of the air passage case 4b into the air passage chamber 4a formed by the air passage case 4b. It has a configuration.

A substantially mountain-shaped shut-off plate 4f for shutting off a combustion flame spouted from a burner 3, which will be described later, is provided in the blower passage case 4b so as to be detachable as shown in FIGS.
The blocking plate 4f is connected to the front inlet 4c of the air passage case 4b.
The shielding plate 4f is provided with a plurality of passage holes 4h each having a predetermined length in the horizontal direction through which the outside air passes and provided in the vertical direction.

Thus, by providing the blocking plate 4f, the hot air from the burner 3 can be divided and sent to the left and right air blowing chambers 10 and 10, and the right and left balance of the hot air can be improved. Drying performance could be improved. A burner case 13 is formed in the front part of the air discharge chamber 9 at the side of the airflow path case 4b, the rear plate, the lower plate, and the left and right plates being formed in a box shape to form a burner chamber 13a. In the case 13, the burner 3 is mounted forward so that hot air generated from the burner 3 is blown out into a ventilation path chamber 4a formed by a front ventilation path case 4b. The front machine wall 4 where the burner case 13 is located is provided with a jet port 14 d for jetting hot air from the burner 3.

At the upper part of the air passage case 4b, the front machine wall 4
A plurality of outside air suction ports 10a having a predetermined length in the lateral direction are provided at predetermined intervals in the vertical direction, and the outside air sucked from each of the outside air suction ports 10a is supplied from a suction chamber 10c formed by a connection case 10b described later. In this configuration, air is blown to a burner chamber 13a formed by the burner case 13. The connection case 10b connected to the burner case 13 is formed in a box shape by a rear plate and left and right plates to form the suction chamber 10c, and is connected to upper ends of the left and right plates of the burner case 13. It is configured to be

Each outside air intake port 10 provided in the front side machine wall 4
The outside air sucked in from the air passage case 4b passes through the suction chamber 10c formed by the connecting case 10b, passes from the burner chamber 13a formed by the burner case 13 through the jet port 13d of the front side machine wall 4, and flows into the air passage case 4b. This is a configuration in which air is blown into the formed ventilation path chamber 4a. When the outside air passes through the burner case 13, the burner case 13 and the burner 3 are prevented from rising to a high temperature by radiant heat.

The hot air generated from the burner 3, the outside air suction cover 5b of the outside air suction case 5a, the outside air suction port 10a of the front side machine wall 4 and the outside air sucked from each outside air suction port 4e of the ventilation path case 4b. The wind is the air passage case 4b.
The hot air is mixed in the air passage chamber 4a formed as described above and becomes dry hot air. The dry hot air passes through the rear air inlets 4d, 4d of the front side machine wall 4 from the air blow path chamber 4a, and then flows into each air blow chamber. 1
The air is blown into the inside of the drying chambers 8 and 8, and the air is exhausted into the exhaust chamber 9.

As shown in FIG. 9, an upper plate 13b is provided at the upper ends of the left and right plates of the burner case 13.
b, an air inlet 13c is provided at the rear, and the outside air sucked from each outside air inlet 10a of the front machine wall 4 is connected to the connection case 10c.
b, the air is blown from the inlet 13c of the upper plate 13b into the burner chamber 13a formed by the burner case 13, and the outside air is blown from the rear to the front of the burner 3. It is configured to be blown.

As a result, the outside air is blown from the rear to the front of the burner 3, and the burner case 1
3, and the temperature rise of the burner 3 can be prevented. As shown in FIG. 10, the rear plate 11a of the connection case 11d.
Is inclined toward the front lower part, and the burner case 13
The rear case 11a, the upper plate 11b, and the left and right plates 11c, 11c joined to the lower plate constitute a connection case 11d.
The suction chamber 11e is formed by the connection case 11d. The connection case 11d is provided above the burner case 13, and the outside air sucked from each outside air suction port 10a of the front machine wall 4 is formed by the burner case 13 from the suction chamber 11e formed by the connection case 11d. Burner room 1
The outside air is blown into the inside of the burner 3a from the rear to the front.

As a result, more outside air can be sucked in, and this much outside air is blown from the rear part to the front part of the burner 3, and the burner case 13 and the temperature rise of the burner 3 rise. Can be more reliably prevented. As shown in FIG. 5, an outside air temperature sensor 56 for detecting an outside air temperature is provided on the front side surface of the rear plate of the connection case 10b, and both the outside air temperature detection and the abnormal heating of the burner 3 are detected. It has a configuration.

Thus, when the outside air temperature is detected by the outside air temperature sensor 56 and the abnormal heating of the burner 3 occurs, the abnormal heating is conventionally detected by the thermostat. Since the outside temperature sensor 56 can detect the abnormal heating, the cost can be reduced. As shown in FIG. 5, on the rear side of the rear plate of the connecting case 10b opposite to the outside air temperature sensor 56, an exhaust air temperature sensor 57 for detecting the exhaust air temperature is provided in back-to-back relation with the outside air temperature sensor 56. I have.

Thus, these two temperature sensors 56, 57
The harness can be integrated, and the cost can be reduced. Further, as shown in FIG. 5, the harness 3a of the burner 3 is configured to be connected to an operation device 14, which will be described later, via a suction chamber 10c formed by a connection case 10b. Thus, since the harness 3a of the burner 3 is provided in the suction chamber 10c through which the outside air passes, it is possible to prevent burnout of the harness 3a.

An operating device 14 for starting and stopping the dryer 1, the moisture sensor 2, the burner 3 and the like for each operation such as filling, drying, and discharging on the outer surface of the air passage case 4b.
Are detachably provided. On the outer surface of the rear machine wall 4 where the drying chamber 8 is located, a rear plate, an upper / lower plate, and a left / right plate are formed in a box shape to form a discharge channel case 16. 16a is provided detachably, and
6 and the exhaust chamber 9 are configured to communicate with each other. Exhaust fan 15
Is provided on the air exhaust path case 16a at the center rear side exhaust air duct 17, and the rear side machine wall 4 is provided with an exhaust motor 18 for driving the exhaust air generator 15 to rotate.

The valve motor 19 is provided with the delivery valves 11, 1
1 is driven to rotate via a speed reduction mechanism. The fuel pump 20 has a fuel valve and is provided in the burner case 13. The fuel pump 20 is opened and closed by opening and closing the fuel valve.
The fuel in the fuel tank 21 is sucked and supplied to the burner 3. The blower 22 is provided inside the burner cylinder of the burner 3 and is driven to perform a rotational speed change by a blower motor 23 for speed change.
Combustion air corresponding to the supplied fuel amount is blown by the blower 22 to the burner 3. The hot air generated from the burner 3 and the external air passing through the burner case 13, the external air suction case 5a, and the air passage case 4b are mixed to form dry hot air.

The diffusion board 24 is provided at the center in the front-rear direction of the bottom plate of the transfer gutter 5 and below the supply port for supplying the transported grains to the storage chamber 7, and uniformly diffuses and reduces the grains to the storage chamber 7. ing.
The grain raising machine 25 is provided on the outer side of the front side machine wall 4, and has a belt with a bucket conveyor 26 stretched therein, and the upper end thereof is provided with a discharge cylinder 27 between the starter of the transfer gutter 5. The lower end is provided with a supply gutter 28 to communicate with the end of the grain collecting gutter 12.

The grain raising motor 29 is connected to the bucket conveyor 2
The belt with 6, the transfer spiral in the transfer gutter 5, the diffusion board 24, the transfer spiral in the grain collecting gutter 12, and the like are rotationally driven. The moisture sensor 2 is provided substantially at the center of the grain raising machine 25 in the vertical direction. The moisture sensor 2 transmits an electrical measurement signal from the operation device 14 to rotate the moisture motor 30 to rotate and drive various parts of the moisture sensor 2. In response to this, the moisture in the crushed grains is detected while crushing and compressing the grains. Further, an electrode temperature sensor 58 for detecting an electrode temperature is provided in the moisture sensor 2.

The operating device 14 is a box-shaped push button for starting the drying machine 1, the moisture sensor 2, the burner 3 and the like on the surface plate of the box body for each of the operations of inserting, drying, and discharging. -Type on / off switch incorporation / drying / discharge starting means 31a, 31b, 31c, stopping means 32 for stopping the dryer 1 and the buzzer 33, moisture setting means for setting a target finish moisture of kernels 34, display lamps 35 for each moisture, drying type setting means 36 for setting a drying type as a drying speed, respective display lamps 37 for each drying type, a setting amount setting means 38 for setting the amount of embedded grain, stone Indicator lamps 39 for both number and ventilation drying, moisture correction means 40 for correcting the grain moisture value, timer increase / decrease setting means 41, 42 for increasing or decreasing the set time of the timer, emergency stop means 43a ,
Power supply starting means 44, display means 43 for digitally displaying various display items, monitor display lamps 45, 45 for displaying motor abnormalities and sensor abnormalities, display lamps 46 for displaying the mixed state of immature grains, and water content of kernels A display lamp 47 for displaying a variation state is provided.

The method of setting various items by operating the setting means 34, 36, 38 has the following construction. For example, when setting a fast drying mode for rice grain, by turning on the drying setting means 36,
This display lamp 37 is sequentially turned on from the display lamp 37 at the position where the rice grain is slow, and when the display lamp 37 at the display position is turned on as soon as possible, the drying setting means 36 is turned off during this turn on, thereby enabling quick drying. The mode can be set.

When the target moisture content is set to 15%, by turning on the moisture setting means 34, the display lamps 35 are turned on sequentially from the display lamps 35 at the cut-off position, and the display lamps 35 at the display position are turned on. When the display lamp 35 is turned on, by turning off the moisture setting means 34 during this lighting, the finish target moisture can be set to 15%. The setting of the filling amount can be set by operating the filling amount setting means 38 in the same manner as described above.

The insertion amount setting means 38 is, for example, 24
Assuming that the dryer 1 can dry stone grains,
The minimum indentation amount of 4 stones is displayed as 1 and 6 stones are displayed as 2, and thereafter 8 stones, 10 stones, 12 stones, 14 stones, 16 stones, 18 stones,
20 stones, 22 stones, 24 stones 3, 4, 5, 6, 7, 8,
9, 10, and 11 are displayed. The control device 48 is provided in the operation device 14 and includes a paddy flow sensor 49.
Detection, input of digital sensor information, and moisture sensor 2
Digital input circuit 50, burner 3 to which the determination of
The comparison circuit 52 to which the detection of the frame lot 51 for detecting the flame generated from the input is inputted, and the respective start setting means 31a, 31
b, 31c, 32, 34, 36, 38, 40, 41, 4
2, 43a, 44, a digital input circuit 53, a detection value detected by the moisture sensor 2, and an analog input circuit 54 to which analog sensor information is input, a hot air temperature sensor 55, an outside air temperature sensor 56, and exhaust air. A voltage conversion circuit 59 to which detection values detected by the temperature sensor 57 and the electrode temperature sensor 58 are input, an A / D conversion circuit 60, a serial data reception circuit 61, and a digital input circuit 63 to which a memory clear 62 is input. Circuits 50, 52, 53, 54, 5
A microcomputer 64 for controlling the dryer for performing arithmetic logic operation and comparison operation on the inputs from 9, 60, 61 and 63, a memory 65, and a blower motor 18 via an output circuit 66 in response to a command from the microcomputer 64 for controlling the dryer. , Valve motor 1
9, and start and stop control of the grain raising motor 29, and start and stop control of the fuel valve, the fuel pump 20, the burner motor 68, and the igniter 69 via the output circuit 67,
The start and stop of the fuel valve are controlled via a pulse drive circuit 70, and the blower motor 23 is controlled via a rotation command output circuit 71.
Start, stop, and adjust control of the rotation pulse input circuit 7
2, input control to the dryer control microcomputer 64, start and stop control of the moisture motor 30 via an output circuit 73, display various items on the display means 43 via a display circuit 75, and output via an output circuit 74. The buzzer 33 is controlled to operate and stop, and includes a serial data transmission circuit 76, a nonvolatile memory 77, and the like.

As shown in FIGS. 11 to 14, the grain dryer 78
The left and right downflow chambers 7c, 7c below the storage chamber 7 are formed by a downflow net 79a, 79a formed by left and right side nets, a central mountain shape, an upper advantage length is a plate material, and a lower portion is a net material. It is constituted by the formed downflow net 79b. Large air blow chambers 10 and 10 which are long in the vertical direction are formed by these outer upper flow nets 79a and outer lower dry nets 8a. Along with the configuration of these large air blowing chambers 10, 10, large drying chambers 8, which are long in the vertical direction, are formed. It has a configuration in which an air-discharge chamber 9 is formed.

The front plate, upper and lower plates, and left and right plates are formed in a box shape from the upper end of the drying chamber 8 to a position above the upper end of the drying chamber 8 on the outer surface of the front side machine wall 4. An air passage case 80b that forms the air passage 80a is detachably provided. The lower partition plate 81b and the left and right
Right partition plates 81c, 81c are provided to form a connection chamber 81a.

At the lower part of the outer surface of the front plate of the air passage case 80b, a box-shaped outside air suction case 5a made of a front plate, upper and lower plates, and left and right plates is detachably provided.
A suction case cover 5b is provided on the front plate of the outside air suction case 5a. The outside air sucked in from the suction case cover 5b passes from the outside air suction case 5a through a front inlet 80c provided in a front plate of the air passage case 80b where the outside air suction case 5a is located. The air is blown into the ventilation path chamber 80a formed by 80b.

The left and right plates of the air passage case 80b have an external air inlet 8 having a predetermined length in the front-rear direction for sucking external air.
0d are provided at predetermined intervals in the vertical direction, and the air passage case 80
The front plate b has a configuration in which a plurality of outside air suction ports 80e of a predetermined length in the left and right direction for sucking outside air are provided at predetermined intervals in the up and down direction. Has a configuration in which a plurality of outside air intake ports 10a having a predetermined length in the left-right direction are provided at predetermined intervals in the vertical direction.

The outside air sucked from the outside air suction port 80e on the front side of the air passage case 80b is supplied to the air passage case 8b.
0b, a suction chamber 10c formed by the connection case 10b, a burner chamber 13a formed by the burner case 13 from each of the outside air intake ports 10a of the front side machine wall 4, and an ejection port 13d of the front side machine wall 4 from the connection chamber 81a. Through the air duct case 8
In this configuration, the air is blown into the ventilation path chamber 80a formed by Ob. When the outside air passes through the burner case 13, the burner case 13 and the burner 3 are prevented from rising to a high temperature by radiant heat.

In the burner chamber 13a formed by the burner case 13, hot air generated from the burner 3 mounted forward and the outside air suction cover 5b of the outside air suction case 5a.
The outside air suction port 80d of the air passage case 80b and the outside air sucked from the outside air suction port 80e are mixed in the ventilation path chamber 80a formed by the ventilation path case 80b to become dry hot air. The dried hot air is supplied from the ventilation path chamber 80a to the large rear transportation inlets 4d, 4d of the front side machine wall 4.
After that, air is blown into each of the large air-blowing chambers 10, 10, cross-flows through the large-sized drying chambers 8, 8, and is discharged into the large-sized air-blowing chamber 9.

As a result, the size of the drying chambers 8, 8 is increased, and the drying efficiency is improved. In addition, since the grain raising machine 25 and the operating device 14 do not protrude from the front of the outside air suction case 5a, the external appearance is improved. The shape becomes good, and the air duct case 80b
Is enlarged and the ventilation path chamber 80a is widened,
Noise was reduced and noise was prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along the line AA of FIG. 2 and FIG. 11;

FIG. 2 is an overall side view of a grain dryer partially sectioned.

FIG. 3 is an enlarged sectional view taken along line BB of FIG. 2;

FIG. 4 is an enlarged sectional view taken along the line CC of FIG. 2;

FIG. 5 is a sectional view taken along line DD of FIG. 3;

FIG. 6 is an enlarged front view of the operating device that can be partially broken;

FIG. 7 is a block diagram.

FIG. 8 is a view showing another embodiment, and is an enlarged sectional view taken along the line BB of FIG. 2;

FIG. 9 is a view showing another embodiment, and is a cross-sectional view taken along the line EE of FIG. 8;

FIG. 10 is a view showing another embodiment, and is a cross-sectional view taken along the line EE of FIG. 8;

FIG. 11 is a view showing another embodiment, and is an overall side view of a grain dryer partially sectioned.

FIG. 12 is a view showing another embodiment, and is an enlarged FF of FIG. 11;
Sectional view

FIG. 13 is a view showing another embodiment, and is an enlarged GG of FIG. 11;
Sectional view

14 is a view showing another embodiment, and is a cross-sectional view taken along the line HH in FIG. 12;

[Explanation of symbols]

 Reference Signs List 3 burner 4 machine wall 4a air duct room 4b air duct case 5a outside air intake case 8 grain drying room 9 exhaust air room 10 air exhaust room 10a outside air intake port 13 burner case 13a burner room 15 exhaust fan 16 exhaust air room 16a exhaust air Road case

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keiichi Miyazaki, 1-Eight Hachikura, Toze-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. Technical Department (72) Inventor Takashi Uehara 1 Toya-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. An air passage case 4b forming an air passage chamber 4a for blowing dry hot air, which is a mixture of hot air and outside air, on the outer surface of the front machine wall 4, and outside air on the outer surface of the air passage case 4b. And an outside air suction case 5a for sucking air and blowing it to the blowing path chamber 4a, and an exhaust path chamber 16 for exhausting the used dry hot air are formed on the outer surface of the rear wall 4 to mount the exhaust fan 15. The grain exhaust chambers 8 and 8 are provided on both the left and right sides at predetermined intervals between the exhaust air path case 16a and the machine walls 4 and 4 on the front and rear sides.
8, an exhaust chamber 9 communicating with the exhaust path chamber 16,
Burner cases forming ventilation chambers 10, 10 communicating with the ventilation path chamber 4 a on both left and right sides outside the drying chambers 8, and a burner chamber 13 a inside the ventilation chamber 9 on the ventilation path chamber 4 a side. 13
And a burner 3 mounted to blow hot air forward in the burner chamber 13a, and outside air is sucked into the burner chamber 13a by injecting outside air into the upper machine wall 4 in the upper part of the blower path case 4b. An outside air suction device for a grain dryer, wherein a plurality of outside air suction ports 10a for blowing air are provided at predetermined intervals in a vertical direction.