JPS6266009A - Burner - Google Patents

Abstract

PURPOSE:To provide always stable combustion and reduce a production of carbon and soot by a method wherein gasified fuel injected from an injecting port is mixed with combustion air injected from a combustion air injecting port in a rotational direction of a dispersing cylinder so as to perform a circulating combustion of the fuel. CONSTITUTION:In a dryer for use in drying grains, a dispersing cylinder 2 for use in guiding and dispersing fuel under its rotation by means of enlarging a diameter of an outer circumferential edge 1 at its extremity end to make a conical shape and an injecting auxiliary cylinder 4 forming an injecting port 3 for use in injecting and igniting a part of the gasified fuel are provided, and an injecting cylinder 8 is arranged in order to form an injecting space 5 for injecting a part of the fuel and igniting it is also installed. Gasified fuel is injected from the two points of the injecting port 3 and the injecting space 5, the gasified fuel injected from the injecting port 3 is circulated and ignited under a rotation of the dispersing cylinder 2, and a circulating flow is applied to the circulation combustion with the combustion air injecting from the combustion air injecting port 7, resulting in that the gasified fuel and the combustion air are well mixed with each other to show always a stable combustion. So, no carbon or soot is adhered to a burner 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a burner, and can be used in a dryer for drying grain.

2. Description of the Related Art Conventionally, there has been an eight-stage system for ejecting and burning vaporized fuel using a jet port formed between a diffusion pipe and an auxiliary jet pipe, and a jet gap formed between the auxiliary jet pipe and the jet pipe. there were.

Problems to be Solved by the Invention For example, when a burner is used in a grain dryer, hot air generated by the burner installed at the front of the dryer is sucked by an exhaust fan installed at the rear. In a configuration in which hot air is passed through a drying chamber to dry the grains flowing down inside the drying chamber, combustion of the burner during this drying operation is performed using a rotating diffusion tube whose outer periphery at the tip is expanded into a conical shape. The vaporized fuel is ejected and combusted through the ejection port formed between the enlarged diameter part and the auxiliary ejection cylinder, and the ejection gap formed between the outer peripheral part of the auxiliary injection cylinder and the ejection cylinder, and this ejected combustion The combustion air when
The fuel is supplied along the jet nozzle and the jet gap from a direction perpendicular to the jet nozzle and the jet gap, and the burner burns. Even when the fuel at the start of combustion in the burner is raw combustion, or when the raw combustion becomes main combustion, the combustion air is supplied and ejected along the jet nozzle and the jet gap. Since this combustion air does not swirl, the effect of promoting combustion is small, and therefore carbon and soot may be generated in large quantities.

Means for Solving the Problems This invention provides a diffusion tube (2) whose tip outer periphery (1) is enlarged in diameter into a conical shape and which guides and diffuses fuel by rotation, and a diffusion tube (2) that A spout (3) that spouts and burns vaporized fuel
), and a jet auxiliary cylinder (4) is provided on the outer periphery of the jet auxiliary cylinder (4) to form a jet gap (5) for jetting and burning a part of the vaporized fuel. , Combustion air is ejected between the ejection port (3) and the ejection gap (5) in the rotational direction of the diffusion cylinder (2), and the vaporized fuel ejected from the ejection port (3) is The burner is provided with a combustion air outlet (7) that promotes combustion.

Effect of the invention A spout (3) formed between this enlarged diameter part of the diffusion cylinder (2) whose outer peripheral edge (1) is conical and has an enlarged diameter and the jet auxiliary cylinder (4).
and the ejection gap (5) formed between the ejection auxiliary pipe (4) and the ejection pipe (6), the vaporized fuel ejects and burns to become a combustion flame. (3) The vaporized fuel jetted out from the combustion air jet port (7) provided between the jet port (3) and the jet gap (5) in the direction of rotation of the diffusion tube (2). It mixes with combustion air and swirls to create a combustion flame.

Effects of the Invention According to the present invention, a combustion air outlet (7) is provided in the direction of rotation of the diffusion cylinder (2), from which combustion air is ejected for swirling combustion after being mixed with the vaporized fuel ejected from the outlet (3). As a result, when the fuel is in main combustion at the start of burner combustion, the combustion air jetted out from the combustion air outlet (7) generates a strong swirling air current, increasing the agitation of the air and increasing the main combustion. By shortening the time, it is possible to prevent the generation of carbon and soot generated during this main combustion, and at the same time, when the main combustion shifts to the main combustion, vaporization that is ejected from the jet port (3) and combusted can be prevented. The fuel is swirled and combusted by the rotation of the diffusion cylinder (2), and the combustion air jetted out from the combustion air outlet (7) adds a swirling flow to the swirling combustion, thereby causing the fuel to burn through the combustion air outlet (3). ) The vaporized fuel ejected from the combustion air nozzle (7) is mixed well with the combustion air ejected from the combustion air nozzle (7), and the combustion is always stable, so that the generation of carbon and soot is reduced.

Example In the example in Figure 1, (8) is a dryer.
) is provided with a burner case (9) in the front, a burner (10) is built into the burner case (9), and an operating device (11) for starting and stopping the dryer (8), etc. )
and a grain hoist (12) for transporting the grains to the upper part, an exhaust fan (13) for sucking and exhausting the hot air generated from the burner (10) at the rear, and a drying room ( +4)
, a storage chamber (15) is provided in the upper part, and the hot air generated from the burner (lO) is sucked and exhausted by the exhaust fan (13), thereby ventilating the drying chamber (14). , this drunkenness 4.μ (11) Meat Le Tsubakishita City's Koshirechi l 10 - Karekukuni σ It is configured to be exposed to dryness.

The burner (10) is attached to a mounting plate (16) that protrudes upward from the inner side of the lower plate of the burner case (9), and this burner (lO) is cylindrical and has a rear wall portion that blows combustion air to the rear. A rear blower tube (17) having an opening, a cylindrical front blower tube (18), and an opening (19) in the center and near the outer periphery between the front and rear blowers (17) and (18). A partition plate (20) having a shaft (19) is provided, and a motor (22) having a shaft (21) projecting forward is mounted on a support plate inside the rear blower tube (18).

Inside the front blower tube (18), a blower tube (
6), the ejection tube (6) has a cylindrical tip, a vertical portion, an inclined portion that slopes from the vertical portion toward the center rear portion, and an opening in the center of the bottom. A jet auxiliary cylinder (4) is provided at the inner diameter of the tip of the jet cylinder (6) to form a jet gap (5), and this jet auxiliary cylinder (4) has a cylindrical tip and a vertical portion. It has a sloped part that projects forward from this vertical part and slopes toward the central rear part, and has an opening in the central part, and the vertical part between the auxiliary jet pipe (4) and the jet pipe (6) has a certain gap, and a part of the vaporized fuel passes through this gap and is ejected and burned from the ejection gap (5), and the front feeder Attach the ignition heater (23) to the heater mounting plate (2
4), and the end of this ignition heater (23) is configured to protrude into the injection auxiliary cylinder (4).

A cylindrical guide tube (25) with an open end is fixed to the opening at the bottom of the ejection tube (6), and the shaft (25) of the motor (22)
21) A scattering body (27) that rotates and scatters the fuel injected from the fuel nozzle (2B) and a diffusion tube (2) are fixed to the shaft end, and the diffusion tube (2) is shaped like a tip and has a mouth rim. The outer peripheral edge (1) of the tip is expanded in diameter into a conical shape, and the other end is a small diameter cylinder with a vertical part that connects this small diameter part and the expanded diameter part. A small gap is formed between the part and the mouth edge to allow fuel to flow out. A jet nozzle (3) is formed between the enlarged diameter part of the diffusion cylinder (2) and the inclined part of the jet auxiliary # (4), and the vaporized fuel is spouted from this jet nozzle (3). The structure is such that vaporized fuel is ejected and combusted.

Between the jet gap (5) and the jet port (3), a combustion air metal (28) is installed in the vertical part of the jet auxiliary pipe (4) and the jet pipe (6). ), and a predetermined number of these combustion air metals (28
) A passageway (29) through which combustion air passes and a combustion air outlet (7) from which this combustion air is ejected are provided in the central part, and this combustion air outlet (7) is connected to the diffusion tube ( 2), and the combustion air is supplied to the blower m (30 mm) provided on the outer side of the upper plate of the burner case (9).
) is rotated by the blower motor (31), and the blower (3
0) and the opening of the rear blower tube (17).
The air is blown inward, and the openings (19), (19) of the partition plate (20) are blown from inside this rear blower tube (17).
through the spout (3), the spout gap (5) and the front feed J! The combustion air is ejected into Lm (18), and is ejected from the combustion air outlet (7) via the passageway (29) of the combustion air metal (28).

Fuel for combustion is supplied from a fuel tank (33) installed at the front of the dryer (8) through a fuel hose (34), a fuel pump (35) installed on the outer side of the lower plate of the burner case (9), and a fuel supply. 'r! (3Ei) and the rear blower tube (17)
The fuel is injected and supplied to the outer circumferential portion of the scattering body (27) through the fuel nozzle (2B) fixed to the outer circumferential portion and directed above the scattering body (27).

By operating the operating device (11) provided at the front of the dryer (8), the dryer (8) is started, and at the same time, the ignition heater (24) of the burner (10) is energized. 24) becomes red hot, and the combustion fuel flows into the fuel tank (
33) to the fuel nozzle (2) via the fuel pump (35), etc.
6), the fuel is injected and supplied to the outer periphery of the scattering body (27), and the fuel is scattered to the inner wall of the diffusion tube (2) by the scattering body (27),
While flowing down the inner wall of this diffusion tube (2),
A part of the ejected fuel scatters onto the red-hot ignition heater (24), automatically ignites and starts combustion, and this combustion causes the diffusion tube (2) to is heated, and the fuel flowing down inside the diffusion tube (2) is vaporized, and this vaporized fuel is ejected from two locations, the ejection port (3) and the ejection gap (5). It burns to become a combustion flame, and this combustion flame turns into hot air, which is sucked by the exhaust fan (13) installed at the rear of the dryer 41 (8) and ventilated across the drying room (14), and then into the storage room (15). ) The grains flowing down the drying chamber (14) are exposed to this hot air and dried, and when the grains reach a specified moisture content, the operating device I
C11) to automatically stop the dryer (8).

During the drying operation, the burner (lO) burns the vaporized fuel from two locations: the jet nozzle (3) and the jet gap (5), and the vaporized fuel is combusted. The vaporized fuel ejected from (3) undergoes swirling combustion due to the rotation of the diffusion cylinder (2), and a swirling flow is added to the swirling combustion by the combustion air ejected from the combustion air jet port (7). The vaporized fuel ejected and burned from the ejection port (3) and the combustion air ejected from the combustion air ejection port (7) mix well and burn in a stable state at all times.

In this way, since the combustion is always in a stable state, there is no possibility that carbon or soot will adhere to the par (10).

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side sectional view, Fig. 2 is an enlarged perspective view of a part thereof, Fig. 3 is a front view, and Fig. 4 is a part of a dryer. FIG. 5 is a partially cutaway front view of the dryer. In the figure, code (1) is the outer periphery, (2) is the diffusion cylinder, (3) is the jet port, (4) is the jet auxiliary pipe, (5) is the jet gap, and (6) is the jet auxiliary cylinder.
) indicates the injection pipe, and (7) indicates the combustion air injection port.

Claims (1)

[Claims] A diffusion tube (2) whose tip outer circumferential edge (1) is expanded into a conical shape and guides and diffuses fuel by rotation, and an ejection port (3) for ejecting and burning vaporized fuel between the diffusion tube (2) and the diffusion tube (2). A jet auxiliary pipe (4) is provided on the outer periphery of the jet auxiliary pipe (4) to form a jet gap (5) for ejecting and burning a part of the vaporized fuel. Spout (3
) and the ejection gap (5), a combustion air is ejected in the direction of rotation of the diffusion tube (2) to promote combustion of the vaporized fuel ejected from the ejection port (3). A burner equipped with an air outlet (7).