JPS6042365B2 - vaporizing burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vaporizing burner that atomizes fuel and burns it raw, then generates a mixed gas of evaporated gas of the fuel and forced wind to vaporize and burn the mixture.

A rotary vaporizer is provided in the combustion cylinder, and the fuel supplied with forced air into the rotary vaporizer is atomized and blown out to cause live combustion.
In the case of a vaporization burner that vaporizes and burns a mixture of evaporated fuel gas and forced air, when the burner is started, the fuel is completely atomized from the rotary vaporizer into the combustion cylinder. If the fuel is not dispersed evenly, ignition becomes uncertain and the raw combustion flame is difficult to stabilize, which may delay the transition to vaporization combustion, or even after the transition to vaporization combustion, the amount of fuel supplied may fluctuate for some reason. If there is, unvaporized fuel will be produced, causing abnormal combustion flames.

In view of the above, the present invention provides a rotary vaporizer with a fuel diffusion cylinder having a smaller diameter so as to rotate integrally with the rotary vaporizer.
By forming the air mixture passage with the rotary vaporizer and the fuel diffusion tube, the fuel diffusion tube that rotates together with the rotary vaporizer has a larger diameter, and the diffusion effect of the fuel is further reduced to the inner circumferential surface of the fuel diffusion tube. By performing this on both sides of the inner peripheral surface of the rotary vaporizer, the fuel diffusion surface can be greatly expanded, ensuring complete atomization and uniform spraying of the fuel, ensuring ignition when starting the burner, It rapidly stabilizes the raw combustion flame and promotes the transition to vaporization combustion, and even if there is a sudden change in the amount of refueling after the transition to vaporization combustion, it is possible to prevent the generation of unvaporized fuel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is intended to provide a vaporizing burner, and the configuration of the present invention will be described below with reference to preferred embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a combustion tube with an open top end and a closed bottom. A blower tube 2 is connected to the center of the bottom of the combustion tube 1. A cylindrical rotary vaporizer 4 whose upper end is closed and whose base end is open is attached to the distal end of the inserted rotating shaft 3 so as to cover the rotating shaft 3J.

Inside the rotary vaporizer 4 is a fuel diffusion tube with a slightly smaller diameter and an open upper end, which diffuses the supplied fuel into a thin layer and sprays it in the form of fine particles toward the inner peripheral surface of the upper end of the rotary vaporizer 4. 5 is fitted into the fuel diffusion cylinder 5, and the retaining plates 7, 7, . . . It is fixed to the rotary vaporizer 4 by... Holding plates 7, 7...
...also serves as an air mixture stirring blade. Reference numeral 8 denotes a fuel supply pipe, and the tip of the fuel supply pipe 8 faces above a saucer portion 5a provided at the bottom of the fuel diffusion tube 5, and a central portion of the saucer portion 5a corresponds to the blower tube 2. The air outlet 5b is open.

Reference numeral 9 denotes a partition tube whose upper end is closed and whose lower end is open. It is fixed to the tip together with the rotary vaporizer 4, and stirring blades 11, 11, . . . are attached to the outer peripheral surface of the partition tube 9.

Further, a gas chamber 12 is formed at the bottom of the combustion tube 1, and the gas chamber 12 communicates with an air mixture passage 6 formed by the rotary vaporizer 4 and the fuel diffusion tube 5. The upper surface of the gas chamber 12 is a combustion disk 14 in which a large number of flame nozzles 13, 13, . . . are bored. The base end of the rotary vaporizer 4 is bent outward to form a fuel scattering end 15, and a fuel scattering gap 16 is formed between the fuel scattering end 15 and the inner peripheral edge of the combustion disk 14. 17 is a spark plug.

FIG. 2 shows another embodiment of the one described above. In this embodiment, an inverted conical cylindrical fuel diffuser 18 is provided at the center of the upper end of the partition tube 9 so that the tip of the fuel supply pipe 8 faces close to its outer peripheral surface, and the gas chamber 12 is It is formed over the inner circumferential surface of the combustion tube 1, and a blowhole 19 is formed in the center of the upper end surface of the rotary vaporizer 4 and the partition tube 9, and a blowhole gap 20 is formed between the rotary vaporizer 4 and the upper end surface of the partition tube 9. A fume guide plate 21 is attached to the tip of the rotating shaft 3. The rest of the structure is similar to that of the embodiment shown in FIG. Next, the operation of the present invention will be explained.

Now, when starting the burner, if the rotary vaporizer 4 is rotated at high speed and forced air is sent from the blower tube 2 into the rotary vaporizer 4, and fuel is supplied from the fuel supply pipe 8, the fuel diffusion tube 5
The fuel spilled onto the saucer portion 5a is diffused into a thin layer by the action of centrifugal force and transferred to the upper end side.Then, forced air flowing from the upper end turns the fuel into fine particles toward the inner circumferential surface of the upper end of the rotary vaporizer 4. The fuel is sprayed, further diffused and transferred into a thin layer along the inner circumferential surface of the rotary vaporizer 4, and finally atomized and sprayed into the combustion cylinder 1 from the fuel spray gap 16.

Then, when the spark plug 17 is ignited, live combustion occurs in the combustion tube 1, and the raw combustion flame rapidly heats the rotary vaporizer 4 to the vaporization temperature of fuel, so that the fuel is subsequently supplied into the rotary vaporizer 4. The diffused fuel evaporates and vaporizes, and the vaporized gas is mixed with forced air while passing through the air mixture passage 6 from the air supply passage 10 to form an air mixture, and the air mixture gas enters the gas chamber 12. Air is stored. Then, the mixed gas stored in the gas chamber 12 is ejected into the combustion tube 1 at a constant pressure from the flame nozzles 13, 13 of the combustion plate 14, and is vaporized and burned. When vaporization combustion occurs in the combustion tube 1, the rotary vaporizer 4 is heated by the combustion flame, so that mixed gas continues to be generated within the rotary vaporizer 4, and vaporization combustion continues. l By the way, the fuel supplied from the fuel supply pipe 8 onto the saucer part 5a of the fuel diffusion tube 5 is sprayed onto the inner circumferential surface of the fuel diffusion tube 5 due to the centrifugal force caused by the high speed rotation of the fuel diffusion tube 5, and the inner circumferential surface is It rises in the form of a thin film, and is further sprayed from the upper end onto the inner circumferential surface of the rotary vaporizer 4, and the same action is repeated on the inner circumferential surface of the rotary vaporizer 4, so that the fuel scattering gap is The fuel sprayed from 16 into the combustion cylinder 1 is completely atomized and evenly sprayed.

Therefore, when starting the burner, ignition by the ignition plug 17 is ensured, and a stable raw combustion flame can be rapidly obtained after ignition, thereby promoting the transition to vaporization combustion. In addition, after transitioning to vaporization combustion, even if there is a sudden change in the amount of fuel supplied, the fuel diffusion action surface becomes double, the inner circumferential surface of the fuel diffusion tube 5 and the inner circumferential surface of the rotary vaporizer 4. Therefore, no unvaporized fuel is produced.
It is possible to prevent abnormal combustion flames from occurring. In addition,
In the embodiment shown in FIG. 2, the diffusion surface of the fuel supplied from the fuel supply pipe 8 is the outer circumferential surface of the fuel diffuser 18,
Since the inner circumferential surface of the partition tube 9, the inner circumferential surface of the fuel diffusion tube 5, and the inner circumferential surface of the rotary vaporizer 4 are further enlarged, the atomization and uniform spraying of the fuel can be performed more effectively. .

In this embodiment, forced air is constantly ejected from the fumarole port 19 at the attachment part of the rotary vaporizer 4 and the partition tube (9), and the ejected air flows through the fumarole gap 20 along the upper end surface of the rotary vaporizer 4. Since the air blows through the combustion chamber 1, it is possible to prevent overheating and burnout of these parts, and the jetted air becomes combustion secondary air in the combustion tube 1 and acts effectively for complete combustion. In short, the present invention provides a cylindrical rotary vaporizer 4 with an upper end closed and a base end open in a combustion tube 1, and a cylinder-shaped rotary vaporizer 4 with a smaller diameter and an open upper end. A fuel diffusion tube 5 is fitted in which the fuel oil diffuses into a thin layer and is sprayed in fine particles toward the inner circumferential surface of the upper end of the rotary vaporizer, and the upper end and outer circumferential surface of the tube and the upper end surface and inner circumference of the rotary vaporizer 4 are fitted. It is fixed to the rotary vaporizer 4 so as to form an air mixture passage 6 between the surfaces, and
A gas chamber 12 having flame nozzles 13, 13, . By making it larger in diameter, and by making the fuel diffusion effect take place on both the inner circumferential surface of the fuel diffusion tube 5 and the inner circumferential surface of the rotary vaporizer 4, the fuel diffusion surface can be greatly expanded. By completely atomizing the fuel and dispersing it evenly, ensuring ignition when starting the burner, and rapidly stabilizing the raw combustion flame, it is possible to promote the transition to vaporization combustion. Even if there is a sudden change in the amount of fuel supplied, it is possible to prevent the generation of unvaporized fuel.

[Brief explanation of drawings]

The drawings show an embodiment of a vaporizing burner according to the present invention, in which FIG. 1 is a partially cut-away vertical front view, and FIG. 2 is a partially cut-away longitudinal front view of another embodiment. 1... Combustion tube, 4... Rotating vaporizer, 5...
...Fuel diffusion tube, 6...Mixture passage, 12...
...Gas chamber, 13...Flame vent.

Claims (1)

[Claims] 1 A cylindrical rotary vaporizer whose upper end is closed and whose base end is open is provided in the combustion cylinder, and inside the rotary vaporizer, the rotary vaporizer has a smaller diameter and is open at the upper end, and rotates while diffusing the supplied fuel in a thin layer. A fuel oil diffusion tube is inserted into the cylinder to spray fine particles toward the inner circumferential surface of the upper end of the vaporizer, and the cylinder rotates to form an air mixture passage between the upper end and outer circumferential surface of the vaporizer and the upper end surface and inner circumferential surface of the rotating vaporizer. What is claimed is: 1. A vaporizing burner, characterized in that it is fixedly attached to a vaporizing body, and a gas chamber having a flame nozzle is formed in the combustion cylinder, and the gas is communicated with an air mixture passage of the rotary vaporizing body.