JPH0210332B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention mixes evaporated gas of fuel with combustion air and pressurizes it into a gas chamber, and then blows it into a flame chamber to continue vaporization combustion. Even in the event of a fire extinguishment in a vaporization burner, it is possible to reliably prevent the foul odor of the unburned gas mixture generated during the extinguishment of the vaporization combustion from being radiated into the surrounding area for any length of time, and to complete clean combustion from start to finish. This invention relates to a method and device for preventing bad odors.

[Prior Art] Conventionally, fuel, such as petroleum fuel, is fed into a rotating vaporization cylinder in a combustion cylinder, and the fuel is live-combusted in the combustion cylinder, and then the vaporization cylinder is heated by the raw combustion flame. After that, the fuel that has been sent is evaporated and vaporized in the vaporization cylinder, and the generated vaporized gas is mixed with combustion air and injected into the flame chamber from the gas chamber arranged on the inner circumference of the combustion cylinder, resulting in vaporization combustion. The vaporizing burner that was designed to continue was developed before the application of this application, for example, by
This method is publicly known as described in Japanese Patent No. 32094.

[Problems to be solved by the invention] By the way, in the above-mentioned known vaporizing burner,
If the fuel supply is cut off to extinguish the continued vaporization combustion, the fuel that diffuses and migrates in the vaporization cylinder before the oil supply is stopped will be prevented from vaporization combustion by the fuel supply being stopped. Perhaps because the required concentration of vaporized gas cannot be obtained, this vaporized gas is diluted by the combustion air, becomes an unburned gas mixture that cannot be combusted, and remains in the gas chamber. For a long time, the combustible mixture gas has been gradually ejected from the gas chamber, which has caused the problem that the foul odor of the unburnt gas mixture is dissipated into the surrounding area after the vaporizing burner is extinguished.

Therefore, when extinguishing vaporization combustion, the present invention controls so that the ignition plug for the accumulated gas installed in the gas chamber is energized for a short time at the same time as the supply of fuel is stopped, and the unburned gas mixture accumulated in the gas chamber is instantly extinguished. An object of the present invention is to provide a method and device for preventing bad odor during extinguishing in a vaporizing burner, which can prevent the bad odor of unburned gas from being combusted and dissipated into the surrounding area. It is something.

[Means for Solving the Problems] Therefore, the technical problem of the present invention is to quickly ignite and burn the unburned gas mixture generated during the extinguishing of vaporization combustion in the gas chamber, thereby converting the unburned gas mixture into The goal is to fundamentally eliminate the odors caused by gas from being emitted into the surrounding area.

In order to solve this technical problem, we have developed a method in which the evaporated gas of fuel is mixed with combustion air and injected into the gas chamber under pressure, and then the mixture is injected into the combustion chamber to perform vaporization combustion. In a vaporizing burner characterized in that when extinguishing vaporization combustion, the supply of fuel is stopped and at the same time the ignition plug for accumulated gas provided in the gas chamber is energized to cause the unburned gas mixture accumulated in the gas chamber to be combusted in the gas chamber. This is a method for preventing bad odors during fire extinguishing, and its configuration is such that a combustion cylinder is provided with a gas chamber on its inner periphery, and a vaporization cylinder that communicates with the gas chamber is rotatably disposed, and one side of the combustion cylinder is equipped with a combustion cylinder. A ventilation chamber capable of blowing air into the gas chamber through the vaporization tube is installed, and a fuel supply pipe connected to a fuel pump is inserted into the vaporization tube, and an ignition plug for accumulated gas is provided in the gas chamber, and The ignition plug for retained gas and the fuel pump are each connected to a control device that can energize the ignition plug for retained gas for a short period of time at the same time as the fuel pump stops operating. Prevention of bad odors when extinguishing a vaporizing burner This is a device.

[Operation] The above technical method and its device operate as follows.

That is, in FIG. 1, if the burner is started now, the carburetor cylinder 9 will be rotated at high speed, and a certain amount of combustion air suitable for vaporization combustion will flow from the ventilation chamber 2 through the vaporizer cylinder 9 to the gas chamber 7. After that, most of the air is blown into the combustion chamber 15 from the gas chamber 7. Under this condition, if the fuel pump 13 is operated and fuel is sent to the inner circumference of the vaporization tube 8 from the fuel supply pipe 14, the fuel will be diffused and transferred along the inner circumference of the vaporization tube 9, while the fuel will be transferred to the vaporization tube 8. The particles are atomized by the rotational centrifugal force and the blowing action of the circulating combustion air, and are sprayed into the combustion chamber 15 from the periphery of the base end open side of the vaporization tube 8, where they are ignited and burned live. When raw combustion occurs in the combustion chamber 15 in this way, the vaporization tube 8 is intensely heated by the raw combustion flame, so that the fuel sent into the vaporization tube 8 is evaporated during its diffusion and transfer. The generated vaporized gas is stirred and mixed with combustion air to form a complete mixed gas, which is then pumped into the gas chamber 7, and finally from the gas chamber 7 to the combustion chamber 15.
Fumes are emitted into the tank, ignited by the raw combustion flame, and the vaporized combustion flame rises. Therefore, after the supplied fuel is transferred from the raw combustion state to the vaporization combustion state, the vaporization cylinder 8 is heated by the rising vaporization combustion flame, so vaporized gas is continuously generated. Good vaporization combustion can be continued.

By the way, in order to extinguish the ongoing vaporization combustion as necessary, if the operation of the fuel pump 13 is stopped and the fuel supply to the fuel supply pipe 14 is stopped, the signal is immediately sent to the control device 18 and the stagnation is stopped. The gas ignition plug 17 is automatically energized for a short period of time, for example, 5 seconds.

By the way, as mentioned above, when extinguishing vaporization combustion, the fuel that had been fed into the vaporization cylinder 8 through the fuel supply pipe 14 before the fuel supply was stopped is heated and evaporated into vaporized gas. Since there is no new supply of fuel, the vaporized gas becomes a mixed gas with a low gas concentration and is not combusted from the gas chamber 7, causing a situation where the bad odor of the unburned mixed gas is dissipated to the surroundings.

However, as mentioned above, since the ignition plug 17 for the retained gas is in a sparking state for a short time at the same time as the fuel pump 13 stops operating, the generated unburned gas mixture is quickly ignited by the spark, and the remaining gas is quickly ignited in the gas chamber 7. Complete combustion occurs and odorless combustion gas is ejected into the combustion chamber 15.

Therefore, even when extinguishing vaporized combustion, the bad odor of unburned gas mixture is not emitted to the surroundings, and clean combustion can always be achieved.

Note that the vaporizing burner of the second embodiment shown in FIG. 2 is the same as the first embodiment of FIG. The vaporizing burner of the third embodiment shown in FIG. 3 has the same function as the vaporizing burner of the first embodiment except that the vaporizing combustion flame is raised from the combustion plate on the bottom wall side. It is something to do.

[Example] The structure of an oil vaporizing burner for carrying out the method according to the present invention will be explained based on each example.

In FIG. 1, reference numeral 1 denotes a bottomed cylindrical combustion tube with an open tip and a closed base end. and the ventilation chamber 2 are opened in the center of the bottomed side of the combustion tube 1.
communication via. On the entire inner circumference of the combustion tube 1, a combustion plate 4 is provided, which is open on the inside of the central bulging step and has a large number of gas ejection holes 6a perforated around the approximately front half of the combustion surface 5a of the tube wall. A gas chamber 7 is formed between the combustion disk 4 and the combustion disk 4. Reference numeral 8 denotes a carburetor cylinder with a closed tip and an open base end, and the carburetor cylinder 8 is mounted on the tip of a rotating shaft 9 inserted into the combustion cylinder 1 from the ventilation chamber 2 side. It is installed in the same condition. Reference numeral 10 denotes a blower tube, and the blower tube 10 is deeply inserted from the vent 3 of the combustion tube 1 toward the distal end side of the vaporization tube 8, and
A mixed gas 11 is formed between the vaporizer tube 8 and the blower tube 10, and the base end of the mixed gas passage 11 communicates with the gas chamber 7 through the opening of the combustion disk 4.

An inverted conical fuel diffuser 12 is fixed to the tip of the vaporizing tube 8 so as to face the opening at the tip of the blower tube 10, and one end of the fuel diffuser 12 is connected to a fuel pump 13 on the outer surface of the fuel diffuser 12. The opening at the tip of the oil supply pipe 14 is exposed. 15 is a combustion chamber formed inside the combustion disk 4, 16 is a spark plug for vaporization combustion installed across the combustion tube 1 and the combustion disk 4 so that the tip side faces into the combustion chamber 15, and 17 is a tip. The fuel pump 13 and the accumulated gas spark plug 17 are installed in the combustion tube 1 so as to face the inside of the gas chamber 7, and the fuel pump 13 and the residual gas spark plug 17 are used to stop the operation of the fuel pump 13 (stop fuel supply). At the same time, each control device 18 is configured to energize the ignition plug 17 for retained gas for a short time (for example, 5 seconds) so that the unburned mixed gas retained in the gas chamber 7 can be instantly combusted in the gas chamber 7. It is connected.

The method according to the present invention can also be easily accomplished using the second and third embodiments of vaporizing burners shown in FIGS. 2 and 3, respectively. That is, in the vaporizing burner of the second embodiment shown in FIG. 2, the bottom wall side of the combustion tube 1 is bulged outward in order to increase the fume area of the vaporized gas compared to the vaporizing burner of the first embodiment. In addition, the bottom wall combustion surface 5b provided on the bottom wall side of the combustion disk 4 is also provided with a large number of gas ejection holes 5b, and the base open side end of the vaporizing tube 8 is hollow with an outer peripheral edge as a fuel scattering end 20. The configuration is the same as that of the first embodiment except that the cylindrical gas mixture 19 is integrally mounted with a fuel scattering gap 21 in between to improve the fuel scattering effect and further promote stirring and mixing of the generated vaporized gas and the combustion air. It is the same as the vaporizing burner.

The vaporizing burner of the third embodiment shown in FIG. 3 does not emit the vaporizing combustion flame forward like the vaporizing burner of the first embodiment, but instead ejects the flame upward. The overall shape is exactly similar to that of the second embodiment, in which the vaporizing burner is directed upward, except that the combustion tube 1' is formed shorter in length than the combustion tube 1 of the second embodiment, and the combustion A horizontal combustion plate 4' having a downward concave opening in the center is arranged inside the cylinder 1' so that a gas chamber 7' is formed between it and the bottom wall side of the combustion cylinder 1'. The structure is the same as that of the vertical vaporizing burner of the second embodiment, except that the surface of the combustion plate 4' is provided with a large number of upwardly opened gas ejection holes 6b'. When extinguishing vaporization combustion, at the same time as the supply of fuel is stopped, electricity is supplied to the ignition plug 17 for retained gas provided in the gas chamber 7'. The unburned gas mixture remaining in the gas chamber 7' is combusted, thereby always achieving clean vaporization combustion accurately.

[Effects of the Invention] In short, the present invention has the following advantages: After the evaporated gas of fuel is mixed with combustion air and forced into the gas chamber 7,
Even if the gas is injected into the combustion chamber 15 to cause vaporization combustion, when the vaporization combustion is extinguished, the fuel supply is stopped and at the same time the ignition plug 17 for retained gas provided in the gas chamber 7 is turned on for a short time by the control device 18. spark,
Since the unburned gas mixture that remained in the gas chamber 7 is instantly combusted in the gas chamber 7, the emission of the bad odor of the unburned gas mixture that occurs when extinguishing vaporization combustion is reliably eliminated, creating an odorless state. Perhaps because it is possible to extinguish evaporative combustion and always achieve clean combustion, the ignition plug 17 for accumulated gas is sparked by the control device 18 at the same time as the supply of fuel is stopped, so that the foul odor of the unburned gas mixture generated is reduced. This has the effect that all of the gas can be combusted within the gas chamber 7 without being dissipated to the surroundings.

[Brief explanation of drawings]

The drawings show various embodiments for carrying out the method for preventing bad odors during fire extinguishing in a vaporizing burner according to the present invention, and FIG. 1 is a partially cutaway longitudinal sectional front view of the vaporizing burner of the first embodiment. , FIG. 2 is a partially cutaway vertical sectional front view of the vaporizing burner of the second embodiment, and FIG. 3 is a partially cutaway longitudinal sectional front view of the vaporizing burner of the third embodiment. 1... Combustion tube, 2... Blow chamber, 7... Gas chamber,
8... Carburizer tube, 13... Fuel pump, 14... Fuel supply pipe, 15... Combustion chamber, 17... Spark plug for retained gas, 18... Control device.

Claims (1)

[Scope of Claims] 1. In a device in which evaporated gas of fuel is mixed with combustion air and injected into a gas chamber under pressure and then injected into the combustion chamber to cause vaporization combustion, when the vaporization combustion is extinguished, the fuel is A method for preventing a bad odor when extinguishing a vaporizing burner when extinguishing a gas, characterized by energizing an ignition plug for retained gas provided in a gas chamber at the same time as the supply is stopped, and burning unburned gas mixture retained in the gas chamber. 2. A vaporizing cylinder communicating with the gas chamber is rotatably arranged in a combustion cylinder having a gas chamber on the inner periphery, and one side of the combustion cylinder is capable of blowing combustion air into the gas chamber through the vaporizing cylinder. In the case where a ventilation chamber is installed and a fuel supply pipe connected to a fuel pump is inserted into the vaporization cylinder,
An ignition plug for retained gas is provided in the gas chamber, and the ignition plug for retained gas and the fuel pump are connected to a control device that can energize the ignition plug for retained gas for a short time at the same time as the fuel pump stops operating. A device for preventing bad odors when extinguishing a fire in a vaporizing burner, characterized in that the device is connected to the vaporizing burner.