JPH0783409A - Burner combustion equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to achieve stable combustion even when the combustion fuel supplied to the burner is small. [Composition] The vaporized fuel vaporized in the diffusion cylinder 30 burns,
The inner wall 33 ′ of the inner wall 33 ′ of the combustion cylinder 33 provided outside the combustion plate 32 from which the combustion flame is ejected from the ejection hole 31 has an inner diameter 3
A combustion stabilizing plate 34 for stabilizing combustion is provided by setting 4'to a diameter substantially equal to the outer diameter of the combustion plate 32. [Effect] The combustion flame is pushed toward the center by the combustion stabilizing plate 34, so that the diffusion cylinder 30 vaporizes the fuel.
Is always heated well, the vaporization of the combustion fuel becomes good, and stable combustion can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner combustion device and can be used in a grain dryer for drying grains.

[0002]

2. Description of the Related Art Conventionally, vaporized fuel obtained by vaporizing a liquid fuel in a diffusion cylinder is ejected from an ejection hole of a combustion plate provided between an outer diameter portion of the diffusion cylinder and an inner diameter portion of the combustion cylinder. While it is a combustion device that burns, the combustion cylinder portion is not provided with a device or the like for stabilizing the combustion flame.

[0003]

For example, in the case of a burner used in a grain dryer for drying grains, the grains contained in this dryer flow down and circulate in the grain drying chamber of this dryer. However, the vaporized fuel vaporized in the diffusion cylinder of the burner is burnt while being jetted from the ejection holes of the combustion plate provided between the diffusion cylinder and the combustion cylinder, and the combustion flame becomes dry hot air. By passing hot air through the drying chamber,
It is exposed to this dry hot air and dried.

During this drying operation, if the amount of dried grains is small, the combustion fuel supplied to the burner will be small, so that the diffusion cylinder is less likely to be heated by the combustion flame. If the vaporization of fuel deteriorates in the diffusion cylinder, the flame color becomes red fire and incomplete combustion occurs, or if there is a large amount of outside air that is sucked in and passes through the burner, a misfire may occur. However, it is an attempt to solve these problems.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a diffusion cylinder 30.
An inner diameter 34 'is provided at the tip edge of an inner wall 33' of a combustion cylinder 33 provided outside a combustion plate 32 having ejection holes 31 for ejecting a combustion flame while burning vaporized fuel vaporized therein. A burner combustion device is characterized in that a combustion stabilizing plate 34 that is formed to have substantially the same diameter as the outer diameter to stabilize combustion is provided.

[0006]

The function and effect of the invention: The burner used in the grain dryer for drying the grain is such that the grain accommodated in the dryer is circulated while flowing down in the grain drying chamber and the diffusion cylinder of the burner. The vaporized fuel obtained by vaporizing the liquid fuel in 30 is ejected through the ejection holes 3 of the combustion plate 32 provided between the diffusion cylinder 30 and the combustion cylinder 33.
From 1, combustion is performed while ejecting to become a combustion flame, and this combustion flame becomes hot air, and the hot air and the outside air to be sucked are mixed to become dry hot air. By passing the dry hot air through the drying chamber, The grains flowing down in the drying chamber are exposed to the dry hot air and dried.

At the time of this drying operation, the combustion flame that burns while ejecting from the ejection holes 31 of the combustion plate 32 is centered by the combustion stabilizing plate 34 provided at the tip edge of the inner wall 33 'of the combustion cylinder 33. Combustion is carried out while being pressed in the direction. Therefore, the combustion fuel is vaporized and burned while the diffusion cylinder 30 is well heated by the combustion flame. Due to the above, even when the amount of dried grains is small, the diffusion cylinder 3
When 0 is heated well, vaporization of liquid fuel is promoted and combustion is stabilized, incomplete combustion of red fire does not occur, and even when the amount of outside air to be taken in is large , The fuel vaporization is good, so there is no misfire.

[0008]

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 moisture in the grain, a burner 3 for generating hot air, etc. are mounted. The dryer 1 has a rectangular shape that is long in the front-rear direction, and the upper part of the machine wall 4
A transfer trough 5 and a ceiling plate 6 in which a transfer spiral is rotatably installed are provided, and a grain storage chamber 7 for storing grains is formed below the ceiling plate 6.

The grain drying chambers 8 and 8 are provided below the storage chamber 7 between the left and right air exhaust chambers 9 and 9 and the central air blowing chamber 10, and below these drying chambers 8 and 8. Each of the feeding valves 11 for feeding and dropping the grain is rotatably supported. The grain collecting trough 12 rotatably supports a transfer spiral and is provided below the drying chambers 8 and 8 to communicate with each other.

The burner 3 is installed inside a burner case 13, and the burner case 13 is detachably attached to the outer surface of the front machine wall 4 so as to correspond to the inlet side of the blower chamber 10 on the front side of the front machine wall 4. Installed in the dryer, the dryer 1, the moisture sensor 2
Further, an operating device 14 for starting and stopping the burner 3 for each of the work of loading, drying and discharging is detachably provided on the front side machine wall 4.

The wind blower 15 is provided on the rear windshield 4, which is provided on a central rear wind blower 17 of the wind passage chamber 16 which is provided so as to communicate with the left and right wind blow chambers 9, 9. 4 is this blower 1
A blower motor 18 for rotating and driving 5 is provided. The valve motor 19 rotationally drives the delivery valves 11, 11 via a speed reduction mechanism.

The fuel pump 20 has a fuel valve,
The fuel pump 20 is provided outside the lower plate of the burner case 13, and the fuel in the fuel tank 21 is sucked by the fuel pump 20 and supplied to the burner 3. Blower 22
Is provided on the outer side of the upper plate and is rotationally driven at a variable speed by a fan motor 23 for speed change so that combustion air commensurate with the amount of fuel supplied is blown by the fan 22 to the burner 3. The hot air generated from the burner 3 and the intake outside air that is sucked by the exhaust fan 15 and passes around the burner 3 in the burner case 13 are mixed to form dry hot air, which is blown from the blower chamber 10 to the drying chamber. It is configured to pass through 8 and 8.

The burner 3 is composed of a front combustion unit 24 and a rear blower unit 25. The combustion unit 24 scatters the liquid fuel supplied from the fuel nozzle 26. A scatterer 29 and a diffusion tube 30 are mounted on the tip of the shaft 28 for the burner motor 27 that vaporizes.
A guide tube 30 'is provided inside with a predetermined gap. A combustion board 32 having a large number of ejection holes 31 for combusting vaporized fuel and ejecting combustion flames is provided on the rear side of the diffusion cylinder 30.
Is provided.

The combustion cylinder 33 is provided on the rear side of the combustion board 32,
A vaporized fuel passage 34 ′ is formed between the combustion cylinder 33 and the combustion plate 32. The combustion cylinder 33 is formed in a plurality of stages, and the inner wall 33 ′ of the maximum diameter portion has an inner diameter of 3 mm at the tip edge portion.
A combustion stabilizing plate 34 for stabilizing combustion is formed by forming 4'into the same outer diameter as the combustion plate 32.
Reference numeral 4 has a function of holding down the combustion flames ejected from both the ejection holes 31 of the combustion plate 32 and the flame ejection port 35 formed between the diffusion cylinder 30 and the combustion plate 32 toward the central portion. The diffusion cylinder 30 is heated.

The ignition lot 36 is provided on the bottom plate of the maximum diameter portion of the combustion cylinder 33 to ignite liquid fuel, and a frame sensor 37 for detecting the presence or absence of combustion flame is also attached to this bottom plate. The blower unit 25 includes a blower cylinder 38, a burner motor 27, and the like. The blower cylinder 38 is provided on the rear side of the combustion cylinder 33. The burner motor 27 is mounted inside via a mounting plate 39, and the blower 22 The combustion air to be blown is supplied from the blower tube 38 through the blower guide tube 40 into the diffusion tube 30 of the combustion device section 24.

FIG. 7 and FIG. 8 are views showing another embodiment, in which the bottom plate of the maximum diameter portion of the combustion cylinder 33 is provided with a large number of air holes 57 through which the outside air to be sucked passes to provide stable combustion. Board 34
It is also possible to adopt a configuration in which the temperature rise of is cooled by the outside air passing therethrough and lowered. According to the above, the combustion stabilizer 3
4 is intended to prevent burning and rising to a high temperature due to combustion flame.

FIG. 9 is a view showing another embodiment, in which the burner 5 is used.
8 is provided with a projecting portion 60 that projects a part of the outer peripheral portion of the combustion cylinder 59 toward the outside.
1 and a partition plate 62 are provided, and the ignition lot 61 is formed so as to project from the partition plate 62. The bottom plate of the maximum diameter portion of the combustion cylinder 59 has an air hole 63 through which the outside air to be sucked in passes.
Are provided in large numbers.

The combustion stabilizing plate 64 is provided at the tip edge portion of the inner wall 65 of the maximum diameter portion of the combustion cylinder 59, and the inner diameter 66 of the combustion stabilizing plate 64 is formed to be substantially the same as the outer diameter of the combustion plate 67. The combustion stabilizing plate 64 is configured to stabilize combustion.
The diffusion cylinder 68 is provided inside the combustion plate 67. As described above, the ignition lot 61 is provided on the protruding portion 60 to prevent the cooling due to ventilation and to suppress the combustion flame toward the central portion by the combustion stabilizing plate 64 to heat the diffusion cylinder 68 to improve the vaporization of the combustion fuel. ing.

The diffusion plate 41 is provided at the center of the bottom plate of the transfer gutter 5 in the front-rear direction and below the supply port for supplying the transfer grains to the storage chamber 7 to uniformly diffuse and reduce the grains to the storage chamber 7. ing.
The grain-sustaining machine 42 is provided on the outer side of the front side machine wall 4 and has a belt with a bucket conveyor 43 stretched inside, and the upper end has a throw-out cylinder 44 between it and the starting end of the transfer gutter 5. The lower end is provided with a supply gutter 45 between the terminal end of the grain collecting gutter 12 and the lower end thereof.

The grain elevator motor 46 is used for the bucket conveyor 4
The belt with 3 and the transfer spiral in the transfer gutter 5 and the transfer spiral in the diffuser 41 and the grain collecting gutter 12 are rotationally driven. The moisture sensor 2 is provided substantially vertically in the center of the grain raising machine 42. The moisture sensor 2 is rotated by a moisture motor 47 when an electric measurement signal is transmitted from the operating device 14. Each of the parts is rotationally driven, and receives the grains falling while being conveyed to the upper part by the bucket conveyor 43, and while crushing the grains by pressing, the moisture of the crushed grains is detected.

The operation device 14 includes a start switch 48 for starting each work, a stop switch 49 for stopping operation, a moisture setting picker 50 for setting a finishing target moisture of the grain, and a burner 3 on the surface plate. A grain type setting knob 51 and a stake amount setting knob 52 for setting the temperature of the generated hot air, a display section 53 for displaying various items, a monitor display and the like are provided.

The control device 54 is provided in the operating device 14, and the detection values detected by the moisture sensor 2, the frame sensor 37, the hot air temperature sensor 55, etc., the operation of the switches 48, 49, and the setting knobs 50, 51. CP for inputting operations such as 52 and 52 and performing arithmetic and logical operations and comparison operations on these inputs
The CPU 56 is configured to start, stop, adjust, etc., the motors 18, 19, 23, 27, 46, 47 of the drive system, the fuel valve of the combustion system, the fuel pump 20, and the like by the CPU 56. Each of the setting knobs 50, 51, 52 is of a rotary switch type, and predetermined numerical values and types are set according to the operation position.

The operation of the above embodiment will be described below. By operating each setting scoop 50, 51, 52 of the operating device 14 to a predetermined position and operating the start switch 48 for starting the drying operation, the grain dryer 1 is started and the burner 3 is started.
Hot air is generated from the air, and the dry hot air obtained by mixing the hot air with the outside air sucked in is blown from the air blowing chamber 10 into the grain drying chambers 8 and 8.
Through the exhaust air chambers 9 and 9 and the exhaust air passage chamber 16 to be sucked and exhausted by the exhaust fan 15.

The grains stored in the grain storage chamber 7 are dried by being exposed to the hot dry air while flowing down from the storage chamber 7 into the drying chambers 8 and 8. Is fed and flowed down from the grain collecting trough 12 to the inside of the grain raising machine 42 through the supply gutter 45 by the lower transfer spiral, and is conveyed to the upper portion by the bucket conveyor 43, and the transfer gutter 5 is conveyed from the throwing-out cylinder 44. After that, it is transferred and supplied by the upper transfer spiral onto the diffusion plate 41, and is uniformly diffused and reduced into the storage chamber 7 by the diffusion plate 41 and circulated and dried.

When the moisture sensor 2 detects the same grain moisture as the finishing target moisture set by the operation of the moisture setting knob 50,
When the drying is completed, the controller 54 automatically controls the dryer 1 to automatically stop, and the drying of the grain is stopped. The combustion of the burner 3 at the time of this drying work is performed by the liquid fuel supplied from the fuel nozzle 26 to the scatterer 29.
And is supplied to the inner wall portion of the diffusion cylinder 30 and vaporized while flowing down the inner wall portion.
Combustion is generated while ejecting from both the ejection hole 31 and the flame ejection port 35 of No. 2 into a combustion flame, and this combustion flame becomes hot air, and this hot air and the outside air sucking in the burner case 13 are mixed to produce a dry hot air. Becomes

The combustion flame is pushed toward the center by the combustion stabilizing plate 34 of the combustion cylinder 33, and the combustion fuel is vaporized and burned while the diffusion cylinder 30 is always heated well by the combustion flame. .

[Brief description of drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 is an enlarged side sectional view of a burner.

FIG. 2 is an enlarged front view of the burner.

[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: Block diagram

FIG. 6 is an enlarged front view in which a part of the operating device is broken.

FIG. 7 is a view showing another embodiment, which is an enlarged side sectional view of a burner.

FIG. 8 is a view showing another embodiment, and is an enlarged front view of the burner.

FIG. 9 is a view showing another embodiment, and is an enlarged front view of the burner.

[Explanation of symbols]

 30 Diffusion Cylinder 31 Jet Hole 32 Combustion Plate 33 Combustion Cylinder 33 'Inner Wall 34 Combustion Stabilizer 34' Inner Diameter

Claims (1)

[Claims] 1. A tip end portion of an inner wall 33 'of a combustion cylinder 33 provided outside a combustion plate 32 having ejection holes 31 for ejecting a combustion flame while burning vaporized fuel vaporized in a diffusion cylinder 30, A burner combustion device characterized in that an inner diameter 34 'is formed to be substantially the same as the outer diameter of the combustion plate 32 to provide a combustion stabilizing plate 34 for stabilizing combustion.