JPS6137939Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an oil-fired burner, that is, in recent years, many combustion burners that gasify and burn fuel have been provided.

Among these, the so-called rotary type gasifies without using a heating heater, but at the beginning of combustion, raw fuel is burned to heat the vaporization cylinder, and when the vaporization cylinder is heated, it automatically turns into gas. This is to switch from raw combustion to gasification combustion.

However, in order to continue gasification combustion, it is necessary to constantly preheat the vaporization cylinder, and this preheating divides the same gas into the preheating combustion chamber and the main combustion chamber.
At this time, the amount or static pressure of combustion air mixed is structurally excessive on the main combustion chamber side, and thin on the preheating combustion chamber side.

As a result, the preheating combustion chamber exhibits a combustion state that generates red flame or carbon, and the main combustion chamber undergoes lift combustion.

This invention focuses on this point and attempts to eliminate the above-mentioned drawbacks by simply improving the inside of the vaporization cylinder in order to optimize the combustion air or static pressure for the preheating combustion chamber and the main combustion chamber.

Next, to explain the drawings of an embodiment of this invention, 1 is a deep dish-shaped case body with an opening at the center of the front and a large number of air holes around this opening, and inside there is a blower motor 2 and a case body. A fan 3 is integrated with a motor shaft 4 to form an air blowing chamber 5, and an outer frame 6 that can be divided into upper and lower parts is attached to the front.

Reference numeral 7 denotes a middle cylinder that forms an air circulation chamber 8 between the inside of the outer frame 6 and the front of the case body 1, and has an air vent at the rear, and is bent inward while the front part is fixed to the upper end of the inner surface of the outer frame 6. A crater 9 is formed.

Reference numeral 10 denotes a trumpet-shaped vaporizer cylinder whose rear opening is narrowly bent inward to form an oil storage section 11 and communicated with the air blowing chamber 5, and furthermore, the outer peripheral edge of the front opening is bent outward and rearward. On the other hand, a fuel release plate 12 whose outer peripheral edge is bent outward and rearward is attached to form a fuel release gap 13 of 1.2 to 0.5 mm, and a control body 14 extending from the motor shaft 4 side is attached inside. , circulates the incoming combustion air or the static pressure outer circumferential side to improve mixing with the gas, suppresses excess air to the main combustion chamber described later, and also supplies an appropriate amount of fuel air to the preheating combustion chamber described later. to maintain balance.

Further, the fuel release plate 12 has a plurality of gas vents 15...
The gas regulating ring 16 is installed between the outer side of the gas vent 15 on the back side and the fuel release gap 14, and the gas regulating ring 16 is installed between the outer side of the gas vent 15 on the back side and the fuel release gap 14, and is attached integrally with the motor shaft 4 in the center. A gas guide tube 17 is attached to the.

In order to install the vaporizing cylinder 10, it is installed horizontally through the air opening of the middle cylinder 7 and the air circulation chamber 8 to communicate with the air blowing chamber 5.

An inner cylinder 18 is located between the middle cylinder 7 and the vaporizing cylinder 10 and has an ignition plug 19, and its rear end is bent inward from the middle to form a preheating combustion chamber 20 diagonally below the fuel discharge gap 13. A preheating combustion flame path 21 is connected to the carburetor cylinder 10 and the rear and outer side between the middle cylinder 7 and the middle cylinder 7.
Furthermore, a flow passage 22 is formed between the fuel discharge plate 12 and the gas guide cylinder 17 halfway inside the partition plate 2.
3, and a bowl-shaped main combustion chamber 2 at the front.
4 is attached to the partition plate 23 while forming a cavity 25, and the cavity 25 and the inner cylinder 7 are communicated with the air circulation chamber 8 through a plurality of communication ports 26.

The rear circulation hole 27 of the main combustion chamber 24 is opposed to the gas guide tube 17 with a gap 28 formed therebetween, and communicates with the front of the vaporization tube 10, while the front is provided with a plurality of flame ports 29. However, the crater 9 and the preheating combustion flame path 21
It is located inside.

Reference numeral 30 denotes a fuel supply pipe, the tip of which opens into the oil storage portion 11 of the carburetor 10, and the rear end connected to a solenoid valve (not shown) or the like.

31 is a combustion chamber in which a combustion burner is installed.

This invention is constructed as described above. Next, the operation of this embodiment will be explained. When the blower motor 2 is started, the fan 3, the carburetor cylinder 10, and the fuel discharge plate 12 are rotated. Combustion air also flows into various locations as indicated by the arrows.

At the same time, the ignition plug 19 starts to discharge sparks, and after a slight delay, fuel is supplied from the fuel supply pipe 30 to the oil storage section 11. The fuel advances in the form of a thin film on the inner wall of the carburetor cylinder 10 due to the circular force, and finally is ejected in the form of mist from the front fuel discharge gap 13 in an obliquely rearward direction.

Diagonally behind this is a preheating combustion chamber 2 with a spark plug 19.
0, and ignition occurs in this preheating combustion chamber 20, starting raw combustion.

The preheating combustion flame and hot air flow back while heating the outer wall of the vaporization cylinder 10, flow into the preheating combustion flame path 21 in a meandering manner, and reach the crater 9.

By this preheating combustion, the outer wall of the vaporization tube 10 is sufficiently heated, and therefore, the fuel flowing into the inner wall of the vaporization tube 10 is gradually vaporized and becomes vaporized gas, which is mixed with the post-combustion air rectified by the control body 14. It flows into the main combustion chamber 24, is ejected from the flame port 29, ignites from the preheated combustion flame, and starts full-scale gasification combustion.

On the other hand, a part of the vaporized gas in the vaporization cylinder 10 is released from the fuel release gap 13 together with part of the combustion air, and is preheated and combusted in the preheating combustion chamber 20 together with part of the raw combustion fuel, which is similar to live combustion. Continue to uniformly heat the outer wall of the vaporizer cylinder 10.

When switching from the raw combustion mentioned above to gas combustion, since the conventional type does not have a control body in the vaporization cylinder,
The combustion air from the blowing chamber circulates around the inner circumference of the carburetor cylinder, where there is less resistance, and flows into the main combustion chamber with force.
Therefore, the vaporized gas that flows along the inner wall of the vaporization cylinder does not properly flow into the main combustion chamber and becomes excess air, which causes lifting combustion.On the other hand, the vaporized gas generated in large quantities on the outer circumferential side of the vaporization cylinder is larger than the proportion of combustion air. Since a large amount of fuel flows into the preheating combustion chamber through the fuel discharge gap, there is a lack of combustion air, resulting in red flame combustion and carbon generation, which accumulates in the preheating combustion chamber and the preheating combustion flame path.

However, in this invention, by providing a control body 14 in the vaporization tube 10 that causes combustion air to flow toward the outer circumferential side, the combustion air flowing inside the vaporization tube 10 is controlled by the control body 14.
4 serves as a resistor, and therefore flows through the inner wall side of the vaporizer cylinder 10 and mixes with the vaporized gas in large quantities.
Allowing a large amount of vaporized gas to flow into the main combustion chamber 24, preventing lifting combustion without creating excess air,
On the other hand, the combustion air flows around the outer circumferential side of the carburetor cylinder 10 and mixes with the vaporized gas in large quantities, while flowing into the preheating combustion chamber 20 through the fuel discharge gap 13.Therefore, there is no shortage of combustion air, and green flame combustion is achieved. This prevents carbon from accumulating in the preheating combustion chamber and the preheating combustion flame path, and of course allows complete combustion without any red flames being mixed in.

As described above, this invention is based on the rotating motor shaft 4.
The front side of the bulge-shaped carburetor 10 attached to the main combustion chamber 24 is connected to the main combustion chamber 24, and the fuel discharge gap 13 of the carburetor 10 is located in the preheating combustion chamber 20, and the empty cylinder 1 is connected to the main combustion chamber 24.
0 is connected to the blowing chamber 5 that generates combustion air, and inside the vaporization tube 10 is a control body 14 that causes the combustion air flowing in the vaporization tube 10 to flow toward the outer circumferential side.
This allows for automatic transition from raw combustion to gas combustion without installing an expensive heater, and also balances the mixture of combustion air and vaporized gas in the main combustion chamber and preheating combustion chamber. It can be supplied well and therefore the entire combustion can be completely combusted.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of this invention, and FIG. 2 is a sectional view taken along line A--A in FIG. 1. 4...Motor shaft, 5...Blowing chamber, 10...Carbonizer cylinder, 14...Control body, 20...Preheating combustion chamber, 2
4...Main combustion chamber.

Claims (1)

[Scope of utility model registration request] The front side of the bulge-shaped carburetor 10 attached to the rotating motor shaft 4 is communicated with the main combustion chamber 24, and the fuel discharge gap 13 of the carburetor 10 is located within the preheating combustion chamber 20, and the rear of the carburetor 10 is connected to the combustion chamber 24. An oil combustion burner characterized in that it communicates with a blowing chamber 5 that generates air, and includes a control body 14 in the vaporization tube 10 that causes combustion air flowing through the vaporization tube 10 to flow toward the outer circumferential side.