JPS6310325B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vaporizing burner that can quickly evaporate kerosene or other liquid fuel from an initial raw combustion state to a green flame state.

Kerosene and other liquid fuels are atomized by the rotating action of a rotary vaporizer cylinder installed inside the inner cylinder and are atomized and live burned, and then the liquid fuel supplied by combustion heat is passed between the rotary vaporizer cylinder and the inner cylinder. In a vaporizing burner, mixed gas is evaporated and vaporized in a mixed gas passage provided in the rotary vaporizing cylinder, and simultaneously mixed with air to form a mixed gas, which is then combusted with force from a gas chamber provided around the base end of the rotary vaporizing cylinder. In the early stages of combustion, it is possible to maximize the atomization of the liquid only by the rotational action of the rotary vaporizer cylinder, quickly and accurately achieve the ignition start of combustion, and efficiently heat the rotary vaporizer cylinder. Of course, during the transition to vaporization combustion, the generated air-fuel mixture is liquefied by contact with the cold combustion disk and inner cylinder, becoming unburned oil and remaining inside the combustion cylinder and on the outer circumferential surface of the inner cylinder. Of course, preventing the combustion from flowing down through the inner cylinder into the combustion cylinder shortens the transition time from the raw combustion state to the vaporization combustion state and maintains the green flame vaporization combustion state. This is a very important problem in continuously generating a mixed gas with a stable concentration and maintaining stable vaporization combustion over a long period of time.

By the way, in conventional vaporizing burners of this kind, the above problems have not been reliably solved, so sometimes the ignition start of live combustion becomes defective, making it impossible to shift to vaporizing combustion, or During combustion, red flames are mixed into the green flame due to changes in the gas mixture concentration due to the natural evaporation of unburned oil, resulting in a disadvantage that the flame is always in a blue flame state and cannot be vaporized and burned properly.

Therefore, in order to solve the drawbacks of the conventional vaporizing burner of this type, the present invention sprays the liquid fuel supplied to the rotary vaporizing cylinder multiple times to atomize the fuel to the maximum extent possible, thereby achieving live combustion. Not only does it make the ignition start quick and accurate, shortening the transition time from the raw combustion state to the vaporization combustion state, but it also enables the entire combustion tube to be quickly and efficiently heated by the conduction heat of the combustion plate installed to form the gas chamber. In addition to preventing part of the mixed gas from becoming liquefied by bringing it to a high temperature state,
The unburned oil or liquefied oil that is about to flow down into the combustion cylinder from the cold inner cylinder is scattered by the rotating action of the inner cylinder onto the liquefied fuel evaporation wall provided on a part of the bottom wall of the combustion cylinder, and is quickly evaporated. evaporation, which solves all the shortcomings of conventional evaporative burners, speeds up the ignition of live combustion, and generates a stable mixture of gases, making it possible to achieve blue-flame evaporative combustion over a long period of time. The objective is to obtain a vaporizing burner that can be used continuously.

The configuration of the present invention will be described below with reference to various preferred embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a combustion tube whose tip is open and a part of the bottom wall 2 is formed into an upward annular liquefied fuel evaporation wall 3, and the bottom wall 2 of the combustion tube 1 has an air blowing passage in the center. 4 is open. A ventilation chamber 5 is disposed on the bottom wall 2 side of the combustion tube 1, and the combustion tube 1 and the ventilation chamber 5 are communicated via the ventilation path 4. Reference numeral 6 denotes a rotating shaft that is inserted into the combustion tube 1 from the air passage 4, and the distal end of the rotating shaft 6 is closed and the base end is open. The rotary vaporizing tube 7 extends in a curved manner toward the tip side, and is directly connected to a rotary vaporizing tube 7 whose peripheral end serves as a fuel splashing end 9.

Inside the rotary vaporization cylinder 7, both the tip side and the base side are open, and the base open side end is bent toward the liquefied fuel evaporation wall 3, and the peripheral end is used as the liquefied fuel scattering end 11. Connect the inner cylinder 10 with an appropriate number of mounting brackets 12...
The gas mixture passage 13 is formed between the inner circumferential surface of the rotary vaporizing cylinder 7 and the outer circumferential surface of the inner cylinder 10. Therefore, the inner cylinder 10 has a hollow cylindrical shape, and its base end side is connected to the air passage 4. 1
4 is a rotation gap formed between the bottom wall 2 of the combustion cylinder 1 and the base end side of the inner cylinder 10.

Combustion tube 1 around the base end open side of the rotary carburetor tube 7
Inside, there is a gas ejection interval 17 between the rotary vaporizing cylinder 7 and
The outer peripheral wall 18 is attached to the combustion cylinder 1, and the combustion plate 1 has a large number of gas ejection holes 16 perforated on its surface.
5 is installed to form a gas chamber 19 between the combustion tube 1 and the combustion plate 15 to which the discharge side of the mixed gas passage 13 is connected.

At the open end of the inner cylinder 10 described above, there is a hollow inverted conical fuel diffusion tube 20 whose tip edge is bent horizontally to the periphery to form a fuel scattering end 21.
is fitted into the inner cylinder 10, and the opening at the tip of the oil feed pipe 22 faces closely to the inner surface on the small diameter side of the fuel diffusion cylinder 20. 23 is a spark plug.

In the embodiment shown in FIG. 4, the peripheral wall 8 on the open side of the base end is bent slightly outward horizontally without being expanded and extended toward the tip side of the combustion tube 1. At the curved part position, an inclined unfolded wall 25 whose upper half is unfolded obliquely outward and whose peripheral end is formed as a fuel scattering end 26 and a cylinder body 27 whose majority part is formed into a cylindrical shape are installed. This is a modification of the rotary vaporizer tube 7' in which an integrally molded mixture tube 24 is installed, and when such a rotary vaporizer tube 7' is used, the vaporized gas generated in the mixture gas passage 13 is circulated. By using forced air and stirring, a good mixed gas can be generated.

Next, the operation of the present invention will be explained.

In FIG. 1, when the rotating shaft 6 is started, the rotary vaporizing cylinder 7 and the inner cylinder 10, which are integrated, are both rotated at high speed. Therefore, if forced air is blown from the air chamber 5 through the air passage 4 and the inner cylinder 10 toward the tip side of the rotary vaporizing cylinder 7, the forced air flows through the mixed gas passage 13 and gases from the discharge side. After entering the chamber 19, the gas is vigorously injected into the combustion tube 1 through the numerous gas ejection holes 16 and the annular gas ejection gap 17.

There, the rotating fuel diffusion cylinder 20 is connected to the oil pipe 22.
When fuel is supplied to the small diameter side of the inverted cone, the fuel is diffused along the circumferential surface of the inverted cone, and then reaches the fuel scattering end 2 at the circumferential end.
1 toward the inner circumferential surface on the tip side of the rotary vaporizing cylinder 7 in the form of fine particles. The atomized fuel scattered on the inner circumferential surface of the rotary carburetor 7 becomes further diffused by the rotational action of the rotary carburetor 7 and is transferred toward the base end open side.
Finally, the fuel is sprayed from the fuel scattering end 9 toward the combustion tube 1, and ignites to cause raw combustion. Therefore, the supplied fuel repeats the diffusion and scattering actions many times while being sprayed toward the combustion tube 1, so that it becomes atomized to the maximum extent and is burnt live quickly and accurately. When a raw combustion flame is generated in the combustion tube 1, the combustion heat heats not only the rotary vaporization tube 7 but also the combustion disk 15, and furthermore, due to the conductive heat action from the combustion disk 15, the entire combustion tube 1 also reaches a considerable temperature. state.

As a result, the atomized fuel scattered from the fuel pipe 22 to the inner circumferential surface of the rotary vaporizer cylinder 7 from the fuel diffusion cylinder 20 is
It quickly evaporates into vaporized gas during diffusion along the inner circumferential surface of the rotary vaporizer tube 7, and the generated vaporized gas flows through the supplied forced air and the mixed gas passage 13 into the rotary vaporizer tube 7 and inside. While flowing while being rotated by the rotational action of the cylinder 10, the mixture is stirred and mixed, becoming a complete mixture of gases, which is then pressurized into the gas chamber 19. Then, while increasing the ejection pressure, the gas ejection hole 16 and the gas ejection gap 1 are injected into the gas chamber 19.
7, the steam is vigorously emitted, ignited by the previous raw combustion flame, and the vaporized combustion flame is ignited.

By the way, at the start of the production combustion, a part of the fuel scattered from the fuel scattering end 21 toward the inner circumferential surface of the rotary vaporizer cylinder 7 bounces back and adheres to the outer circumferential surface of the inner cylinder 10, which causes an increase in the amount of adhesion. Part of the mixed gas generated in the mixed gas passage 13 at the time of starting vaporization combustion comes into contact with the cold inner cylinder 10. Even if fuel is liquefied and flows down into the combustion tube 1 along the outer peripheral surface of the inner cylinder 10, the adhering fuel and liquefied fuel are maintained at a temperature considerably higher than that of the liquefied fuel splashing end 11 due to the rotational action of the inner cylinder 10. The liquefied fuel is scattered in fine particles toward the evaporation wall 3, quickly evaporates, becomes vaporized gas, and is stored in the gas chamber 19. It is also possible to prevent red flames from mixing with blue flames, which is caused by unburned fuel evaporating all at once due to natural evaporation, and mixed gases with different concentrations are combusted at once by fumarole combustion. The mixture gas pressurized into the gas chamber 19 is prevented from accidentally becoming liquefied because the entire combustion tube 1 is heated to a considerable temperature by conduction heat, and the mixture gas is always kept at a constant concentration. Gas can be stably atomized and vaporized and burned in a blue flame state over a long period of time.

In short, since the present invention has the above-mentioned specific configuration, when starting live combustion of fuel, the supplied fuel is diffused many times,
Alternatively, by scattering the particles, the atomization can be promoted to the maximum extent, and ignition can be started quickly and accurately, resulting in an early transition from a raw combustion state to a vaporization combustion state. In some cases, the combustion cylinder 1 is rapidly heated by conductive heat from the combustion disk 15, and a part of the mixed gas is liquefied due to unburned oil adhering to the inner peripheral surface of the inner cylinder 10 or contact with the cold inner cylinder 10. Even if a situation occurs in which unburned oil or liquefied fuel flows down into the combustion tube 1 from the base end side of the inner cylinder 10, the unburned oil or liquefied fuel is moved from the liquefied fuel scattering end 11 to the liquefied fuel evaporation wall 3 by using the rotating action of the inner cylinder 10. As a result, the concentration of the mixed gas emitted from the gas chamber 19 is always constant, and good blue flame vaporization combustion without red flame mixed in can be continued for a long period of time. It has the effect of making it possible.

[Brief explanation of the drawing]

The drawings show a vaporizing burner according to the present invention, in which FIG. 1 is a longitudinal sectional front view with a part cut away, and FIG.
The figure is a developed perspective view of the inner cylinder and the fuel diffusion tube, FIG. 3 is an enlarged front sectional view of the main part with a part cut away, and FIG. 4 is a longitudinal sectional front view showing another example of the rotary vaporization tube. DESCRIPTION OF SYMBOLS 1... Combustion tube, 2... Bottom wall, 3... Liquefied fuel evaporation wall, 7... Rotating vaporization tube, 9... Fuel scattering end of rotating vaporization tube, 10... Inner cylinder, 11... Liquefied fuel scattering End, 13... Mixed gas passage, 15... Combustion plate, 1
6...Gas outlet, 17...Gas chamber, 20...Fuel diffusion tube, 21...Fuel scattering end of the fuel diffusion tube.

Claims (1)

[Claims] 1. A rotary evaporation cylinder with a closed tip, an open proximal end, and a fuel scattering edge on the proximal side is rotatably installed in a combustion cylinder whose bottom wall partially serves as an annular upward liquefied fuel evaporation wall. An inner cylinder is disposed in the rotary vaporizing cylinder and has both the distal end and the proximal end open, and the proximal open end is provided with a liquefied fuel scattering end for scattering the liquefied fuel toward the liquefied fuel evaporation wall. are attached integrally to form a mixed gas passage between the inner circumferential surface of the rotary carburetor and the outer circumferential surface of the inner cylinder, and the rotary carburetor is installed in the combustion tube around the base end open side of the rotary carburetor. A gas ejection gap is provided between the combustion chamber and the combustion chamber, the outer peripheral wall of which is attached to the combustion tube, and a combustion plate with many gas ejection holes perforated on the surface.
A gas chamber to which the discharge side of the mixed gas passage is connected is formed between the combustion tube and the combustion disk, and a hollow inverted cone whose tip side periphery is formed as a fuel scattering end is provided at the tip open end of the inner tube. A vaporizing burner characterized by having a shaped fuel diffusion cylinder fitted into an inner cylinder.