JPH0474604B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention is directed to a fuel spill in a vaporization burner that is capable of evaporating kerosene or other liquid fuel from an initial raw fuel state and emitting vaporized combustion flames upward. Regarding prevention devices.

Prior Art Conventionally, in order to evaporate kerosene or other liquid fuel from its initial raw combustion state and eject the vaporized fuel flame upward, a vertical combustion tube equipped with a gas chamber is used.
A vaporizer cylinder with a closed top and an open base end is rotatably disposed, and the tip side of a blower cylinder, which is erected upward from the bottom wall of the vertical combustion cylinder, faces inside the vaporizer cylinder, The gas mixture passage formed between the vaporizer tube and the blower tube is connected to the gas chamber, and the tip opening of the fuel supply pipe facing upward is exposed to the surface of the fuel diffuser attached to the inner surface of the top of the vaporizer tube. The burner is well known, having been described in, for example, Japanese Patent Application Laid-open No. 188911/1983 prior to the filing of this application.

Problems to be Solved by the Invention Incidentally, in the above-mentioned known type of vaporizing burner, a fuel supply pipe extending upward from the blast tube side is generally used as a means for supplying fuel to the surface of the fuel diffuser when starting combustion. A predetermined amount of fuel was supplied through the tank.

However, according to the above-mentioned refueling means, a certain refueling gap is set between the tip opening of the refueling pipe and the surface of the fuel oil diffuser, so during refueling work, the tip opening of the refueling pipe is directed upward. A part of the fuel supplied from the tank toward the surface of the fuel diffuser flows down the fuel supply pipe, and the flowing fuel flows out of the vaporizing burner, which may cause an unexpected fire.

Accordingly, the present invention provides that even if a part of the fuel flows down the fuel supply pipe from the tip opening during the refueling operation, all of the flowing fuel is transferred to the narrow ventilation opening on the tip side of the blast tube. After the fuel oil is reliably caught by a narrow wall provided to form a gas cylinder, the flowing fuel oil is guided and accumulated in the gas chamber along the outer circumferential wall of the blower tube, and then evaporated in the gas chamber, or it is evaporated through a drain pipe. The above-mentioned problem has been solved by providing a fuel spill prevention device for a vaporizing burner that allows fuel to be properly collected outside the vaporizing burner and allows vaporization combustion to continue for a long period of time without the risk of fire outbreak. .

Means for Solving the Problem Therefore, the technical problem of the present invention is that even if a part of the fuel flows down from the tip opening through the fuel supply pipe during refueling operation, the flowing fuel can be The purpose is to reliably prevent the gas from flowing out of the vaporizing burner.

In order to solve this technical problem, the present invention has a structure in which a vaporizing cylinder with an open base end is rotatably arranged in a vertical combustion cylinder equipped with a gas chamber, and In the case where the gas mixture passage formed between the vaporizer tube and the blower tube is connected to the gas chamber with the tip side of the blower tube standing upward facing from the bottom wall side of the vertical combustion tube, A narrow wall for forming a narrow air outlet is provided on the tip side of the blower tube, and an upwardly directed oil supply pipe inserted from the inside of the blower tube toward the inside of the vaporizing tube is passed through the penetration part provided in the narrow wall. This is a fuel spill prevention device for a vaporizing burner, characterized in that the penetration portion is sealed.

Effect The above technical means works as follows.

That is, in FIGS. 1 and 2, if the burner is started now, the carburetor 11 will rotate at high speed and at the same time heated combustion air will flow through the blower tube 19 and the vaporizer tube 11 into the gas chamber 10. Finally, it is ejected upward from the gas chamber 10. When fuel is supplied from the fuel supply pipe 26 under such conditions, the fuel is heated combustion air that is forcefully jetted out from the narrow air outlet 22 opened at the tip side of the air blower tube 19, and the fuel is poured into the top of the vaporizer tube 11. After the inner surface is refueled, the vaporizer cylinder 1
It becomes fine particles while being diffused along the inner circumferential surface of the combustion tube 1, and is sprayed from the open base end side of the vaporizing tube 11 toward the inner circumferential surface of the vertical combustion tube 11, whereupon it is ignited and immediately undergoes live combustion. be done. When the fuel is live-combusted in the vertical combustion tube 11 in this manner, the entire vaporization tube 11 is heated by the raw combustion flame, and the temperature inside the vaporization tube is quickly raised to the atmospheric temperature at which vaporization occurs.

When the vaporization tube 11 is heated to a predetermined temperature in the above manner, the fuel supplied to the inner circumferential surface of the vaporization tube 11 via the oil supply pipe 26 flows along the inner circumferential surface of the vaporization tube 11. The gas quickly evaporates and vaporizes while being diffused and transferred by the rotating centrifugal action of No. 11 and the blowing action of the circulating heated combustion air, and the generated vaporized gas is well stirred and mixed with the circulating heated combustion air. After becoming a complete mixed gas and being pressurized into the gas chamber 10, it is injected under a constant pressure condition, allowing the vaporized combustion flame to rise.

By the way, during the refueling work as described above,
Even if a part of the fuel is desulfurized along the outer circumferential surface of the fuel supply pipe 26 without being supplied to the inner surface of the top of the vaporizing tube 11, the desulfurized fuel is trapped at the tip side of the blower tube 19. The sealing action of the penetration portion 28 of the narrow wall 21 provided to form the air outlet 22 prevents further flow down. All of the fluidized fuel blocked by the sealing portion is transmitted from the narrow wall 21 to the outer circumferential wall surface of the blower tube 19 and is accumulated in the gas chamber 10. Therefore, as described above, the fuel accumulated in the gas chamber 10 is vaporized in the gas chamber 10 by the heating effect due to continued combustion, and the air mixture is pressurized into the gas chamber 10 from the vaporization tube 11. Fumarole combustion is performed from the gas chamber 10 together with the gas, or the gas chamber 10
From the bottom of the drain pipe 29, the fuel is properly discharged to the outside of the vaporizing burner, thereby ensuring good vaporizing combustion over a long period of time while preventing fires caused by the flowing fuel flowing out of the vaporizing burner. It can be continued for a long time.

Embodiment The structure of the vaporizing burner according to the present invention will be described with reference to a preferred embodiment shown in the accompanying drawings.

In FIGS. 1 and 2, 1 is a vertical combustion tube with an open top end and an opening 2 at the center of the base end and bottom wall side, and 3 is an open top end provided so as to surround the entire vertical combustion tube 1 from the outside. A temperature path 4 is formed between the vertical combustion tube 1 and the outer tube 3, the base end communicating with the opening 2 and the distal end opening upward. A ventilation chamber 5, an opening 2 of the vertical combustion tube 1, and a temperature path 4 are provided on the outer surface side of the outer cylinder 3.
These are communicated through an open window 7 to which a ventilation heater 6 is fitted over the entire surface.

A large number of gas injection holes 9 are provided in the vertical combustion tube 1 described above.
A combustion disk 8 having a perforated hole is laid horizontally, and a gas chamber 10 of an appropriate capacity is arranged between the vertical combustion tube 1 and the combustion disk 8.

Reference numeral 11 denotes a cylindrical carburetor with a closed top and an open base end. It is fixed so as to cover the shaft 12.
Then, a gas stirring cylinder 13 having a gas jetting inner wall 14 with a fuel oil scattering end 15 at the end and a gas jetting inner wall 14 on the outer circumferential side is integrally attached to the base end open side of the vaporizing cylinder 11 with a fuel oil scattering gap 16 therebetween, and the gas jets out. Inner wall 14 and combustion plate 8
An annular gas ejection passage 18 is formed in the center between the gas ejection outer wall 17 and the gas ejection outer wall 17 provided so as to be inclined inward. Reference numeral 19 is a blower tube with both ends open, which is inserted upward from the bottom wall side of the vertical combustion tube 1 to deep inside the vaporizer tube 11, and a constricted blower port 22 is formed upward at the tip side of the blower tube 19. A cylindrical constriction body 20 having a constriction wall 21 is provided integrally with the blower tube 19 or separately.

19a is a mixed gas passage formed between the inner circumferential surface of the vaporizing tube 11 and the outer circumferential surface of the blower tube 19, and the discharge side thereof is connected to the gas chamber 10.

Reference numeral 23 denotes a hollow inverted cone-shaped ventilation regulating body mounted inside the top of the vaporizer cylinder 11 via the rotating shaft 12;
A fuel outflow passage 24 is provided at the top of the ventilation regulating body 23 . Reference numeral 25 denotes a fuel oil diffuser mounted on the rotating shaft 12 so as to be located at the center of the ventilation adjusting body 23, and the front end opening 27 of the oil supply pipe 26 is exposed on the surface of this fuel diffuser. The above-mentioned oil supply pipe 26 is passed through the narrow wall 21 from inside the blower pipe 19 to the vaporizer pipe 19.
1 and extends upward into the oil supply pipe 26.
The penetrating portion 28 at the position where it penetrates the narrow wall 21 is completely sealed with a sealing material or the like.

Therefore, even if a part of the fuel flows down from the tip opening 27 along the outer circumferential surface of the fuel supply pipe 26 during fuel refueling work, the flowing down of the fuel can be prevented by the stopper. After that, the gas chamber 1 is made to flow down on the narrow wall 21 along the circumferential wall of the blow tube 19.
The constricted air is allowed to accumulate in the gas chamber 10 and evaporate into the chamber 10 by heating, or to properly flow out and collect outside the vaporization burner through the drain pipe 29 connected to the bottom of the gas chamber 10 through an open connection. The fuel supplied to the fuel diffuser 25 from the tip opening 27 of the fuel supply pipe 26 is transferred to the fuel diffuser 25 by the jetting action of heated combustion air blown intensively from the port 22.
It can be ejected and transferred along the surface to the inner surface of the top of the vaporizer cylinder 11. 30 is a spark plug.

Effects of the Invention In short, since the present invention has the technical means as described above, fuel is supplied to the vaporizer cylinder 11 through the fuel supply pipe 26.
The fuel is then live-combusted in the vertical fuel cylinder 1, and then by the heating action of the live combustion flame, the fuel supplied into the vaporization cylinder is evaporated and vaporized into a complete mixed gas. Even in the case of a vaporizing burner that raises a vaporizing combustion flame upward from the gas chamber 10, during the fuel refueling operation, even a part of the fuel is transmitted through the fuel supply pipe 26 without being refueled into the vaporizing tube 11. Even if a situation occurs in which the fuel flows down, all of the flowing fuel is blocked by the sealing action of the penetration part 28 through which the fuel supply pipe 26 passes, and then the fuel is passed through the narrow wall 21 to the blower tube 19.
The fuel is treated by being induced to accumulate in the gas chamber 10 along the outer peripheral surface of the fuel, thereby preventing fires caused by the flowing fuel inadvertently flowing out of the vaporizing burner, and ensuring good vaporization combustion over a long period of time. can be continued.

[Brief explanation of the drawing]

The drawing shows one embodiment of the fuel spill prevention device in a vaporizing burner according to the present invention, and shows the first embodiment of the device.
The figure is a longitudinal sectional front view with a part cut away, and FIG. 2 is a perspective view of the main part. 1... Vertical combustion tube, 10... Gas chamber, 11...
Vaporizer tube, 19... Blower tube, 20... Constricted cylinder body, 2
DESCRIPTION OF SYMBOLS 1... Constricted wall, 22... Constricted air outlet, 26... Oil supply pipe, 28... Penetration part.

Claims (1)

[Claims] 1. A vaporizing cylinder with an open base end is rotatably arranged in a vertical combustion cylinder equipped with a gas chamber, and a blower is installed in the vaporizing cylinder upward from the bottom wall of the vertical combustion cylinder. A mixed gas passage formed between a vaporizing tube and a blower tube is connected to a gas chamber with the tip side of the tube facing, and a constriction is provided on the tip side of the blower tube to form a constricted air outlet. Fuel leakage in a vaporizing burner, characterized in that a wall is provided, and an upwardly directed fuel supply pipe inserted from the inside of the blast cylinder toward the inside of the vaporization cylinder is passed through the penetration part provided in the narrow wall, and the penetration part is sealed. Prevention device.