JPS6058364B2 - vaporizing burner - Google Patents

Description

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

Kerosene and other liquid fuels are atomized by the rotating action of the vaporizer with the tip closed and the base end open, and are live-combusted in the combustion cylinder.Then, the vaporized material is heated by the heat of combustion and supplied into the vaporizer. The fuel is vaporized and mixed with air at the same time to form a humid gas, which is then pressurized into the gas chamber provided at the open end of the vaporized body, followed by vigorous olfactory combustion from the annular flame path. For vaporizing burners,
If the olfactory pressure of the mixed gas is low, it will ignite in the gas chamber and cause backfire combustion, making it impossible to use it as a vaporizing burner.

For this reason, conventional vaporizing burners of this type generally burn the mixed gas by increasing the olfactory pressure to an extent that backfire combustion does not occur, which may result in high vaporization combustion noise and the inability to burn quietly and softly. The moisture gas generated inside the vaporized body is pressurized into the gas chamber while being in a swirling state due to the rotational action of the vaporized body, with its amount constantly changing, and after hitting the surrounding gas chamber wall, it is turned around. Because olfactory combustion is forced through the narrow annular flame path, a pulsation phenomenon occurs in the gas chamber due to fluctuations in gas pressure, and the olfactory pressure is not equalized around the entire circumference of the annular flame path, resulting in vaporization. The combustion flame becomes wavy with different lengths, and the combustion state fluctuates and becomes unstable. In view of the foregoing, the present invention is designed to evaporate and burn from an initial raw combustion state, by attaching the base end to the fuel cylinder on the outside of the inner flame wall provided on the open side of the base end of the vaporized body. The attached flame outer wall is installed along the annular flame path between the inner flame wall and the outer flame wall, the base end of which communicates with the gas chamber, and between the combustion tube and the outer flame wall there is a base. The gas storage chambers are each formed in a gas storage chamber with a stopper shape whose end side is connected to the gas chamber, and on the outer wall of the flame forming the annular flame path, the humid gas stored in the gas storage chamber is formed in the annular flame path. A large number of gas ejection holes are perforated at intervals so that the gas can be smelled inside, and the annular flame path is directed from the gas chamber to the inside of the combustion cylinder, forming an annular shape and having an irregular pressure state to prevent moisture gas from being smelled. , suppress moisture gas by spraying it in a cross pattern at intervals from the gas storage chamber,
A vortex of humid gas is actively created at intervals in the annular flame path to equalize the flame pressure from the entire circumference of the annular flame path, and at the same time, the ejection speed is softened and quiet. Moreover, the present invention is intended to provide a vaporizing burner capable of emitting a vaporizing combustion flame in a stable state with a substantially constant wave length over the entire circumference. The configuration of such a vaporizing burner will be described with reference to a preferred embodiment shown in the accompanying drawings.

In Figure 1, 1 has the tip open and the bottom side is the ventilation chamber 2.
It is a bottomed combustion tube connected to the combustion tube 1, and a rotary shaft 3 inserted into the combustion tube 1 from the ventilation chamber 2 side is provided in the center of the combustion tube 1. At the tip of the rotary shaft 3, A cylindrical vaporizer 4 whose distal end is closed and whose proximal end is open is fixedly placed over the rotating shaft 3. A gas stirring cylinder 5 is attached to the base end open side of the vaporizer 4 with a fuel scattering gap 6 therebetween, and a flame inner wall 7 is formed on the outer circumferential side of the gas stirring cylinder 5.
is inclined upward toward the open end side of the combustion tube 1, and its end is formed as a fuel scattering end 8. Reference numeral 9 denotes a blower tube with open ends attached to the combustion tube 1 so as to penetrate deeply into the vaporizer 4 from the bottom side of the combustion tube 1, and the end side of the blower tube 9 is connected to the blower chamber 2. At the same time, the tip side is opened into the vaporizer 4 to form a mixed gas passage 10 between the inner circumferential side of the vaporizer 4 and the outer circumferential side of the blower tube 9 .

Reference numeral 11 denotes a gas chamber formed between the bottom side of the combustion tube 1 and the open side of the vaporizer 4, and a mixed gas passage 10 is connected to this gas chamber 11.

The upper open side of the gas chamber 11 formed as described above is covered at its peripheral edge by a horizontal wall plate 12 attached to the combustion tube 1, and at the center opening of this wall plate 12. is the inner wall of the flame 7
An annular flame passage 14 whose base end passes through the gas chamber 11 is formed between the flame inner wall 7 and the flame outer wall 13 by integrally molding the flame outer wall 13 which is bent inward along the flame flame wall 13. do. The interior covered by the combustion tube 1, the wall plate 12, and the flame outer wall 13 serves as a gas storage chamber 15, and its base end side is connected to the gas chamber 11.

In the flame outer wall 13 formed as described above, a large number of gas jet holes 16 are bored in one row or in a plurality of rows at approximately equal intervals, so that the gas discharge holes 16 are perforated from the gas chamber 11 into the annular flame passage 14 and into the combustion tube 1. The gas storage chamber 15
A large number of gas ejection holes 16.
・・・・・・・The jets are applied in a cross-shaped manner and suppressed, and a vortex phenomenon of mixed gas is generated at intervals in the annular flame path 14, and the flame pressure from the entire circumference of the annular flame path 14 is increased. At the same time, the ejection speed is softened to emit a vaporized combustion flame that is quiet and has a substantially constant wave shape over the entire circumference. Reference numeral 17 denotes an inverted cone-shaped fuel diffuser attached to the inner surface of the top end of the vaporizer 4 via the rotary shaft 3, and the tip of the fuel supply pipe 18 is visible through the fuel diffuser 17.

19 is a spark plug.

The vaporizing burner shown in FIG. 2 is an example other than that shown in FIG. This curved expansion part is formed on the inner wall 7'' of the flame, and the outer peripheral end of the inner wall of the flame becomes the fuel oil scattering end 8''.

Therefore, if the vaporizer 4 is formed as in the embodiment shown in FIG. 2, the gas stirring cylinder 5 as in the vaporizer burner shown in FIG. 1 can be omitted, thereby simplifying the structure of the vaporizer burner.

Then, if the base end portion of the wall plate 12'' is further bent into a concave shape and this concave portion is formed in the unburned oil reservoir portion 20, the second
The vaporizing burner shown in the figure can be used immediately as a vertical vaporizing burner.

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

In FIG. 1, when starting the burner, the rotating shaft 3 rotates the vaporized body 4 at high speed, forcing forced air to flow from the ventilation chamber 2 into the vaporized body 4, and at the same time, liquid fuel is supplied from the fuel supply pipe 18. When the fuel starts, the fuel is supplied from the tip of the fuel supply pipe 18 to the surface of the fuel oil diffuser 17, and then diffuses and transfers due to its rotational action and reaches the inner surface of the top of the vaporizer 4. From then on, the fuel sequentially flows through the mixture gas passage 10 and the fuel oil diffuser 17. , passes through the fuel scattering gap 6,
Since the fuel is sprayed from the fuel scattering end 8 onto the inner circumferential surface of the combustion tube 1 , when ignited by the spark plug 19 , raw combustion occurs within the combustion tube 1 .

When raw combustion occurs in the combustion tube 1, the combustion flame heats the vaporized body 4, and the vaporized body 4 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 4 is quickly evaporated and vaporized while being diffused and transferred along the inner circumferential surface of the vaporized body 4 due to the rotational centrifugal action, and mixed with the flowing forced wind. It becomes gas. In this way, the mixed gas passage 10
The gas generated inside the gas stirring cylinder 5 enters the gas chamber 11 in a swirling state, then hits the gas chamber wall, reverses itself, and is vigorously ejected from the entire circumference of the annular flame passage 14.
Air is stored in the gas storage chamber 15. However, the outer wall of the flame 1
3 is provided with a large number of gas ejection holes 16 at intervals, so that the mixed gas of equal pressure stored in the gas storage chamber 15 is ejected from the gas ejection holes 16 into the annular flame passage 14. As a result, the mixed gas flowing through the annular flame path 14 is injected in a crosswise manner and is suppressed. As a result, the annular flame path 14
Inside the gas chamber 11, a vortex phenomenon of the mixed gas is generated at intervals, and the jetting speed of the mixed gas is softened, and even if a pulsation phenomenon occurs in the gas chamber 11, a vortex phenomenon of the mixed gas is generated at intervals. By equalizing the pressure of the jet flame from the entire circumference of the annular flame passage 14, a stable combustion flame of approximately the same length can be ejected in a wave shape from the entire circumference of the annular flame passage 14. In short, the present invention atomizes liquid fuel and combusts it live, then evaporates the atomized liquid fuel using the heat of combustion, simultaneously mixes it with air to form a mixed gas, and converts this mixed gas into Even in the case of a vaporizing burner in which flame is emitted from the gas chamber 11 through the annular flame passage 14, a stopper-shaped gas storage chamber 15 connected to the gas chamber 11 is formed on the outer peripheral side of the annular flame passage 14. The outer flame wall 13 forming the annular flame path 14 is provided with gas ejection holes 16 at intervals for blowing out the mixed gas stored in the gas storage chamber 15 into the annular flame path 14 in a cross-shaped manner. Since the perforation is made, the mixed gas of equal pressure stored in the gas storage chamber 15 is ejected from the gas ejection hole 16 into the annular flame passage 14, and the inside of the annular flame passage 14 is in an irregular pressure state. The mixed gas is sprayed in a cross-shaped manner to suppress it, creating a vortex phenomenon at intervals, which softens the jetting speed of the mixed gas and creates a quiet state. At the same time as the flame is emitted, the flame pressure is equalized over the entire circumference, and a stable wavy combustion flame of approximately the same length can be emitted from the entire circumference of the annular flame passage 14. As a result, the gas chamber Even if a pulsating phenomenon of the mixed gas occurs in the combustion engine 11, it is not only possible to stably continue quiet vaporization combustion for a long period of time, but also to prevent backfire combustion even when a small amount of combustion is performed. play.

[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 partially cutaway vertical front view, and FIG. 2 is a partially cutaway longitudinal front view showing another embodiment of the vaporizing burner. It is a diagram. 1... combustion cylinder, 4... vaporized body, 7...
...Flame inner wall, 11...Gas chamber, 13...
... Outer wall of the flame, 14... Annular flame path, 15...
...Gas storage chamber, 16...Gas outlet.

Claims (1)

[Claims] 1 In a bottomed combustion tube with an open tip, a vaporized body is rotatably arranged with the tip closed and the open side of the base as an inner wall of the flame facing the open side of the tip of the combustion tube. In a device in which a gas chamber is disposed between the inner flame wall and the open side, an outer flame wall whose base end is attached to the combustion tube is installed along the outside of the inner flame wall, so that the inner flame wall and the outer flame wall are connected to each other. An annular flame channel is formed between the combustion tube and the flame outer wall, and the base end is connected to the gas chamber. , the outer wall of the flame forming the annular flame path is provided with a large number of gas ejection holes at intervals, which cause the mixed gas stored in the gas storage chamber to be emitted crosswise into the annular flame path; A vaporizing burner featuring: