JPS6127649B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a vaporizing burner that evaporates and burns kerosene or other liquid fuel from an initial raw combustion state.

A combustion disk having a large number of gas ejection holes is installed in the combustion cylinder to form a gas chamber between the combustion disk and the bottom wall of the combustion cylinder, and the area around the center of the combustion disk where the gas ejection holes are not bored is The gas ejection outer wall tube is formed in a downwardly inclined direction diagonally inward with the bent part as a boundary, and the gas ejecting tube is formed in an upwardly inclined outwardly direction on the base end open side of the vaporizer which is rotatably arranged in the combustion tube. A blowout inner wall tube is formed, and an annular gas blowout passage whose base end side is connected to the gas chamber is formed between the gas blowout outer wall tube and the gas blowout inner wall tube, and the mixed gas generated inside the vaporized body is discharged. In the case of a vaporizing burner that causes vigorous fumes to burn through gas jet holes and jet channels that are perforated in the combustion disk, one gas jet outer wall tube that forms the annular gas jet path is located at the center of the combustion disk, which is usually horizontal. Since plastic forming was performed by bending the peripheral part directly inward, the bent part was rounded due to the thickness of the material and could not be formed into an acute angle. It is opened in an open shape.

Therefore, if the amount of mixed gas is reduced at the same time as the jet pressure of the mixed gas is lowered in order to cause a small amount of vaporized combustion to occur in the vaporizing burner, ignition will immediately enter the gas chamber from the gas outlet opening in the shape of a tip. This causes backfire combustion and makes it impossible to stably maintain a small amount of vaporized combustion.Therefore, conventional vaporizing burners have the disadvantage that the combustion amount cannot be adjusted over a wide range.

In view of the above, the present invention is designed to cause the mixed gas generated inside the vaporized body to be combusted through the combustion disk and the gas jet passage, but the present invention has been developed by providing a Gas is ejected by attaching an annular wall extending slightly diagonally outward from the bend of the combustion disk to the inner circumferential surface of the gas ejection outer wall cylinder, which is formed by slanting downward toward the inside at the bend. By completely eliminating the opening of the discharge side of the passageway, backfire combustion due to ignition in the gas chamber is prevented even in the case of a small amount of vaporized combustion, and even with a single burner. The present invention aims to provide a vaporizing burner that can easily change from large-capacity vaporizing combustion to small-capacity vaporizing combustion, and the structure of the vaporizing burner according to the present invention is shown in the accompanying drawings below. A preferred embodiment will be described.

In FIG. 1, reference numeral 1 denotes a combustion tube with an open tip and a closed bottom side.A ventilation passage 2 is connected to the bottom side of the combustion tube 1, and a large number of gases are inside the combustion tube 1. Gas outlet 4 or slit-shaped gas outlet 4'
A combustion plate 3 with an open opening is laid horizontally, and a gas chamber 5 of an appropriate capacity is arranged between the bottom side of the combustion tube 1 and the combustion plate 3. Reference numeral 6 denotes a cylindrical vaporized body with a closed tip and an open proximal end, and the vaporized body 6 is connected to the ventilation passage 2.
It is fixed to the tip of the rotating shaft 7 inserted into the center of the combustion cylinder 1 from the side so as to cover the rotating shaft 7.

A gas stirring cylinder 8 is integrally attached to the base end open side of the vaporizer 6 with a combustion scattering gap 18 interposed therebetween, and the peripheral wall on the distal end side of the gas stirring cylinder is slanted upward toward the outside to form a gas jetting inner wall. Forming a cylinder 9 and slanting the gas ejection inner wall 9 and the periphery of the central portion of the combustion disk 3, where the large number of gas ejection holes 4, 4' are not perforated, diagonally inward and downward with the bent portion 14 as a boundary. Gas ejection outer wall cylinder 1 formed of
1, an annular gas ejection passage 12 having the same width and having a proximal end connected to the gas chamber 5 is formed. 1
0 is a central opening opened at the center of the combustion disk 3.

The inner peripheral surface of the gas ejection outer wall cylinder 11 for forming the gas ejection passage 12 has a combustion disk 3 at its tip.
An annular wall 13 extending slightly obliquely outward from the bent portion 14 is attached so that the bent portion 14 between the combustion disk 3 and the gas jet outer wall cylinder 11 is rounded due to the thickness of the material, etc. Even if the gas ejection path 1
Not only can it be possible to prevent the opening of the gas jet passage 12 from opening in a slanted manner, but also, depending on the shape of the annular wall 13, the discharge side of the gas jet passage 12 can be narrowed to make backfire combustion more effective during small-volume vaporization combustion. You can make it happen.

Reference numeral 15 denotes a ventilation tube located inside the vaporized body 6, connected to the ventilation passage 2 on the base end side, and having a ventilation passage 16 opened on the distal end side.
A mixed gas passage 17 is formed between the outer circumferential surface of the gas chamber 1 and the gas mixture passage 17, which is connected to the ventilation port 16 on the base end side and to the gas chamber 5 on the discharge side.

Reference numeral 19 denotes an inverted conical fuel diffuser mounted inside the top of the tip of the vaporizer 6 via the rotary shaft 7, and the tip of the oil supply pipe 20 is visible from the surface of this fuel diffuser.

21 is a spark plug.

When a large number of slit-shaped gas outlets 4' are provided on the surface of the combustion disk 3, the gas outlets 4' are surrounded by a bulging wall 22. The vaporizing burner shown in FIG. 5 is another example of the vaporizing burner shown in FIG.
The periphery of the base end open side is integrally developed in a curved manner so as to face diagonally outward and tilt upward, and this developed part is used as the gas jetting inner wall tube 9', so that even if the gas stirring tube 8 is abolished, the gas jetting inner wall tube 9 ' and the gas ejection outer wall cylinder 11 form a predetermined gas ejection path 12.

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

In FIG. 1, when starting the burner, the rotating shaft 7 rotates the vaporized body 6 at high speed, and the ventilation passage 2
When forced air is made to flow toward the combustion tube 1 and liquid fuel is started to be supplied from the fuel supply pipe 20, the liquid fuel is supplied from the tip of the fuel supply pipe 20 to the surface of the fuel diffuser 19, and then diffuses and vaporizes. It is supplied to the top inner surface of the body 6. The fuel, which has spread into fine particles and has become a thin film, sequentially passes through the mixed gas passage 17.
The gas exits from the fuel scattering gap 18 provided on the open side of the base end of the vaporized body 6 to the gas jetting inner wall 9, and is sprayed from the peripheral end onto the inner circumferential surface of the combustion tube 1, so that when ignited by the ignition plug 21, Raw combustion occurs within the combustion tube 1.

When raw combustion occurs within the fuel cylinder 1, the combustion flame heats the vaporized body 6, and the vaporized body 6 rapidly reaches the vaporization temperature of the fuel. Therefore, the fuel supplied to the inner circumferential surface of the top end of the vaporized body 6 is rapidly evaporated and vaporized while being diffused and transferred along the inner circumferential surface of the vaporized body 6 due to the rotational centrifugal action.In the above-mentioned combustion state, however, the fuel is quickly evaporated and vaporized. Since forced air is distributed from the ventilation passage 2 into the mixture gas passage 17 through the ventilation pipe 15 and the ventilation port 16, the evaporated vaporized gas generated in the mixture gas passage 17 is transferred to the mixture gas passage 17. is evenly stirred and mixed with the flowing forced air, becomes a mixed gas of a certain concentration, enters the gas chamber 5 through the gas stirring tube 8, and then enters the gas outlet 4 of the combustion plate 3 or the slit-shaped gas outlet. 4' and the annular gas ejection passage 12 and are vigorously ejected and burned. When a part of the mixed gas is ejected from the annular gas ejection passage 12, the inner peripheral surface of the gas ejection outer wall cylinder 11, which forms the gas ejection passage 12 with the gas ejection inner wall cylinder 9, has a tip. Since the annular wall 13 extending slightly obliquely outward from the curved portion 14 of the combustion disk 3 is attached, the gas ejection passage 12 is formed into a tip-opening shape by the gas ejection inner cylinder 9 and the annular wall 13. First, an accurate flame nozzle is formed to vaporize and burn the mixed gas well.

Therefore, even if the pressure of the mixture gas is reduced to perform a small amount of vaporization combustion by reducing the supply amount of liquid fuel and the supply amount of forced air, the combustion disk 3 and the gas injection outer wall tube 11, the rounded part formed at the bent part 14 with the tip of the bent part 1 of the combustion disk 3
4, the annular wall 13 is attached to the inner circumferential surface of the gas ejection outer wall tube 11 so as to extend slightly diagonally outward than the gas ejection passage 12, so that the gas ejection passage 12 is formed in an accurate shape without being opened in a front-opening shape. It is possible to completely prevent flashback combustion due to ignition into the gas chamber 5, and to allow a small amount of vaporized combustion to continue for a long period of time. Therefore, according to the vaporizing burner of the present invention, even with a single burner, the combustion amount can be adjusted over a wide range from large-capacity vaporizing combustion to small-capacity vaporizing combustion, and the range of use of the vaporizing burner can be widened. You can make it big.

In short, since the present invention has the above-described specific configuration, a large amount of liquid fuel is atomized and raw burned, and then the atomized liquid fuel is evaporated with the heat of combustion. At the same time, the mixed gas is mixed with air to form a mixed gas, and this mixed gas is passed through the gas chamber 5 to the combustion plate 3 and the annular gas ejection passage 1.
Even in the case of more vigorous fumarole combustion than 2,
A gas ejection passage 1 having the same width between the gas ejection inner wall tube 9 and the gas ejection inner wall pipe 9
An annular wall 13 whose tip extends slightly obliquely outward from the bent portion 14 of the combustion disk 3 is attached to the inner circumferential surface of one of the gas ejection outer wall tubes 11 forming the combustion disk 3. It is possible to completely eliminate the rounded part formed in the bent portion 14 between the outer wall pipe 11 and the gas ejection outer wall cylinder 11, and form the gas ejection passage 12 in the correct shape that prevents flashback combustion. By eliminating the opening shape, it is possible to reliably prevent backfire combustion due to ignition from the gas outlet passage 12 to the gas chamber 5 even during small-volume vaporization combustion with low gas pressure, and as a result, one burner can This has the effect of providing a vaporizing burner with a wide combustion adjustment range that can easily achieve vaporization combustion from a large capacity to a small capacity.

[Brief explanation of the drawing]

The drawings show an embodiment of the vaporizing burner according to the present invention, in which Fig. 1 is a longitudinal sectional front view with a portion cut away, and Fig. 2 is a combustion plate in which a small circular gas outlet is bored. Fig. 3 is a partially cutaway plan view of the combustion disk when the gas outlet is opened in the form of a slit, Fig. 4 is an enlarged sectional view of the main part,
FIG. 5 is a partially cutaway longitudinal sectional front view of another embodiment. 1... Combustion tube, 3... Combustion plate, 5... Gas chamber,
6... Vaporized body, 9... Gas ejection inner wall cylinder, 11...
Gas ejection outer wall tube, 12... Gas ejection path, 13...
Annular wall, 14... bending part.

Claims (1)

[Claims] 1. A combustion plate having a large number of gas injection ports is installed in the combustion cylinder, a gas chamber is provided between the combustion plate and the bottom wall of the combustion cylinder, and the area around the center of the combustion plate where the gas injection holes are not bored is The gas ejection outer wall tube is formed in a downwardly inclined direction diagonally inward with the bent portion as a boundary, and the gas ejecting tube is formed in a gas ejection outer wall tube inclined diagonally outwardly and upwardly on the base end open side of the vaporizer rotatably disposed in the combustion tube. forming a gas jetting inner wall tube to form an annular gas jetting path having the same width and having a proximal end connected to the gas chamber between the gas jetting outer wall tube and the gas jetting inner wall tube;
A vaporizing burner characterized in that an annular wall whose tip extends slightly obliquely outward from the bent portion of the combustion disk is attached to the inner circumferential surface of the gas ejection outer wall tube.