JP2605689B2 - Burner - Google Patents

Description

The present invention relates to a burner that burns liquid fuel as vaporized fuel, and can be used, for example, for a burner for a grain dryer.

[Problems to solve the prior art invention]

In order to vaporize the liquid fuel, a rotary vaporization cylinder is arranged at the center side of the combustion flame, and the fuel supplied inside is vaporized by the radiant heat of the flame while transferring the fuel by blast, and this vaporized fuel is injected into the ejection gap of the combustion plate. It burns while vigorously squirting from, but if the combustion flame is overheated,
The liquid fuel cannot be vaporized and moves in a granular state, which causes a so-called red fire.

This tendency is remarkable in the configuration of hot air generation in which the outer periphery of the burner is ventilated. In other words, this is because the wind flowing around the outer periphery of the burner is drawn into the center near the burner, and this acts on the combustion flame to promote the heating of the vaporizing cylinder.

[Means for solving the problem]

The present invention solves such a defect, and therefore, has taken the following technical measures.

That is, the diffusion body 37 is provided inside the rotating vaporization cylinder 2, and the tip of the liquid fuel nozzle 36 is viewed from the diffusion body 37, and the liquid fuel is vaporized while moving the inner peripheral side of the vaporization cylinder 2 by blowing air. The burner 8 is configured to be discharged from a discharge gap such as the discharge holes 3 and 33 formed in the combustion plate 4 and burns, and is installed in a burner case 10 through which the burner 8 can pass. At the tip end of the cylinder 2, an annular cylinder 5 is disposed at a predetermined distance from the vaporization cylinder 2 so as to resist entrainment toward the center of the vaporization cylinder 2.

[Functions and Effects of the Invention]

The liquid fuel supplied from the nozzle 36 is atomized by the rotation of the diffuser 37 and moves inside the vaporization cylinder 2 by blowing air. During this time, the liquid fuel is vaporized by the heating of the vaporization cylinder 2 by the combustion flame, and becomes the combustion plate 4 as vaporized fuel. , And vigorously squirt from the squirt gap to burn. Then, the combustion flame is used as various kinds of drying winds by hot-airizing the air flowing around the burner.

At this time, in the conventional apparatus, the supplied air is entrained in the combustion space of the burner, and the entrainment may cause the combustion flame to be blown back to excessively heat the vaporization cylinder 2, but in the present invention, the vaporization cylinder 2 The annular cylinder 5 provided on the distal end side prevents the combustion flame from being blown back. Further, since the annular cylinder 5 is provided at a predetermined distance from the vaporization cylinder 2, excessive combustion of the vaporization cylinder 2 is prevented. Heating can be avoided and a stable combustion state can be maintained.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

The machine wall 9 of the dryer 7 has a rectangular shape in plan view that is long in the front-rear direction and includes front and rear wall plates and left and right wall plates. A burner 8 is built in a burner case 10 provided on the front wall plate.

An operating device 11 for controlling the start and stop of the dryer 7 is provided on the front wall plate above the burner case 10, and an exhaust fan 12 is provided on the rear wall plate.

The inside of the machine wall 9 is formed by sequentially stacking a storage room 18, drying rooms 14, 14, and a grain collecting gutter 13. Among them, the grain collecting gutter 13 has the transfer spiral 12 at the lower end. The drying chamber 14 at the upper part of the collecting gutter 13 has an upper part connected to a storage chamber 18, and the hot air chamber 16 is provided with the burner case so that the falling grain flows from the hot air chamber 16 to the exhaust air chamber 17.
At 10, the exhaust chamber 17 communicates with the exhaust 12 case. 15,15
Is a delivery valve.

A transfer gutter 20 is provided on a ceiling plate 19 above the storage chamber 18, and a diffusion plate 21 is viewed below an outlet of the transfer gutter 20.

At the front of the machine wall 9, a lift 22 in the form of a belt conveyor 23 is mounted inside. A throw-out cylinder 24 is provided between the elevator 22 and the start end of the transfer gutter 20, and a supply gutter 25 is provided between the lower end and the end of the grain collection gutter 13 to communicate therewith.

The motor 26 rotates the belt conveyor 23, the transfer spiral in the transfer gutter, the diffusion plate 21 and the like, and the motor 27 operates the transfer spiral in the grain collection gutter 13, the delivery valves 15, 15 and the exhaust fan 12
Etc. are configured to rotate and interlock.

The burner 8 is mounted laterally in the burner case 10 with a mounting plate 28. The burner 8 is provided with a blower cylinder 29 for blowing combustion air at the rear. In the blower cylinder 29, there is provided a motor 30 which rotates and rotates the vaporization cylinder 2 which is axially supported on the front side. At the front of the blower cylinder 29, a combustion cylinder 31 having an open center is provided.
A conical guide cylinder 32 is provided at the opening of the combustion cylinder 31. The combustion cylinder 31 has an ejection combustion plate 4 having an ejection hole 33.
Are provided in the fitted state. A passage 34 through which vaporized fuel passes is formed between the combustion platen 4 and the combustion cylinder 31. 35 is an ignition heater.

The vaporizing cylinder 2 has a cup-like shape and its lip is bent outward, and a tip outer peripheral flange 1 is continuously provided with a small gap to guide the atomized fuel at the time of ignition to the ignition heater 35 side. I have. The vaporizing cylinder 2 and the diffuser 37 are fixed to the shaft of the motor 30. The diffuser 37 rotates at a high speed while the nozzle 36 rotates.
This is a configuration that receives and diffuses liquid fuel from the fuel cell. A gap between the outer peripheral flange 1 and the inner periphery of the combustion platen 4 is formed in a ring-shaped vaporized fuel injection hole 3.

The annular cylinder 5 is supported in a cantilever manner by the support arm 38 at a position 6 near the tip of the vaporizing cylinder 2 at a convenient interval 6 from the vaporizing cylinder 2.

39 is a fuel tank, 40 is a fuel pump, 41 is a fuel hose,
42 is a fuel supply pipe.

Regarding the combustion air supply device, the burner case 10
A blower 43 and a blower motor 44 are disposed above the
The suction cylinder 45 and the blower cylinder 46 are connected via 3 and the burner case 1
The configuration is such that the air sucked in 0 can be supplied to the blower cylinder 29 of the burner 8.

 The operation of the above example will be described.

When the start switch of the dryer is turned on, each operation unit is operated, and the grain drying is started. The burner 8 is energized by the fuel pump 40 and the ignition heater 35 to start combustion. That is, the liquid fuel from the fuel nozzle 36 is
It is jetted to the outer peripheral portion and is scattered by the rotation thereof to the inner peripheral side of the vaporizing cylinder 2. The atomized fuel moves along the inner circumference of the vaporizing cylinder 2 with the blowing, and is ignited by the above-mentioned ignition heater 35 which flows out of the gap between the front end outer peripheral flange 1 and the red heat, and the combustion flame rises.

The atomized fuel that is continuously supplied is vaporized while moving through the inner periphery of the vaporization cylinder 2 because the vaporization cylinder 2 is heated by the radiant heat of the combustion flame, and is mainly injected from the injection holes 3 and 33 and burns. Thus, the vaporized fuel is continuously burned.

By the way, the combustion flame is hot-airized with the outside air introduced into the burner case 10 by the suction air of the exhaust fan 12, and is used for grain drying. The introduced outside air passes through the outer periphery of the burner 8 and passes forward. Burner immediately after passing through the combustion cylinder 31
10 Caught in the center side to disturb the flame, and eventually the vaporization cylinder 2
The result is to promote heating. For this reason, the atomized fuel passing through the inner periphery is less likely to receive heat for proper vaporization from the excessively heated vaporization cylinder 2, causing an oil ball phenomenon, and not red fire combustion, but blue fire combustion.

However, in the above embodiment, since the annular cylinder 5 is provided on the outer periphery of the tip end side of the vaporization cylinder 2, it is possible to suppress the above introduced outside air from being entrained and shifted to the center side of the burner 8 after passing through the combustion cylinder 31,
The occurrence of the above-mentioned oil ball phenomenon can be reduced.

The generated hot air passes from the hot air chamber 16 through the drying chamber 14 to the exhaust air chamber 17, where it acts on the grains flowing down the drying chamber 14 to be dried. After this, the dried kernels are collected
13, elevator 22, transfer trough 20, diffusion board 21, etc.
It is returned to and undergoes a tempering action. The drying operation is stopped when the predetermined moisture value is reached.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is an enlarged sectional side view, FIG. 2 is a rear view thereof, FIG. 3 is an overall front view, and FIG. 4 is an overall side view. EXPLANATION OF SYMBOLS 2 ... Vaporizing cylinder 3,33 ... Injection hole 4 ... Combustion plate 5 ... Circular cylinder 8 ... Burner 10 ... Burner case 36 ... Fuel nozzle 37 ... Diffusion body

Claims (1)

(57) [Claims] 1. A diffuser 37 is provided inside a rotating vaporizing cylinder 2, and a tip of a liquid fuel nozzle 36 is viewed through the diffusing body 37, and liquid fuel is transferred to the inner peripheral side of the vaporizing cylinder 2 by blowing air. A burner 8 configured to be ejected from the ejection gaps such as the ejection holes 3 and 33 formed in the combustion plate 4 while being vaporized and burned.
In the case where the burner 8 is installed in a burner case 10 through which air can pass, an annular cylinder 5 that resists entrainment toward the center of the vaporization cylinder 2 is provided at the tip side of the vaporization cylinder 2. A burner, which is disposed at a predetermined distance from the burner.