JPS6133423Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention limits the position of the ignition plug even if it is a burner equipped with a horizontal combustion tube, so that all of the ignition flames ignited by the ignition plug are efficiently promoted to turn the ignition flame. Combustion air swirling with the ring causes the combustion air to accurately swirl along the horizontal combustion tube, quickly burning the fuel that is scattered all over the inner circumference of the horizontal combustion tube, resulting in a rapid transition from the raw combustion state to the vaporization combustion state. The present invention relates to an ignition combustion promotion device in a vaporizing burner that can be achieved.

The present applicant has previously proposed a method in which a portion of the combustion air is delivered to the horizontal combustion tube from a blow chamber provided between the bottom wall of the horizontal combustion tube and a rotating vaporization tube capable of scattering fuel oil or generating vaporized gas. We have developed a vaporizing burner that can rapidly transition from a raw combustion state to a vaporized combustion state by swirling the fumes along the combustion chamber.

By the way, in the case of the above-mentioned vaporization burner, before shifting to vaporization combustion, the fuel that is scattered all over the inner circumference of the horizontal combustion cylinder by the rotating vaporization cylinder is quickly live-combusted by the ignition action of the ignition plug, and the generated fuel is burned. It is necessary to use the combustion flame to reliably heat the rotating vaporization cylinder to the temperature of the vaporizing atmosphere, and for this purpose, all of the ignition flame must be placed in a swirling wind under strong conditions to quickly swirl inside the horizontal combustion cylinder. The most important thing is to

However, in the case of conventional vaporizing burners, the ignition plug is installed in a position that allows the entire ignition flame to swing smoothly along the inner wall of the horizontal combustion cylinder under the most powerful condition. As a result, it is impossible to instantaneously burn the fuel that is scattered all over the inner circumference of the horizontal combustion cylinder when the raw combustion starts, and as a result, not only does it cause poor combustion, but also This was a cause of worsening the start-up of combustion.

Therefore, the present inventor conducted research on this point and found that, as shown in the principle explanatory diagram in Fig. 1, for example, a part of the combustion air injected in the tangential direction from the fume chamber 15 flows along the inner periphery of the horizontal combustion cylinder. When the ignition plug 20 is set in position A under the swirling condition, the swirling direction a of the combustion air and the ascending direction b of the ignition flame are exactly at right angles, so that the swirling direction c of the ignition flame is Since the direction is oblique, the ignition flame cannot be smoothly rotated along the horizontal combustion tube 1 in a strong state. Furthermore, when the ignition plug 20 is installed in the position B, the swirling direction a of the combustion air and the ascending direction b of the ignition flame are completely opposite, and the swirling direction c of the ignition flame is directed along the horizontal combustion tube 1. Therefore, it cannot be rotated with the swirling wind. Furthermore, when the spark plug 20 is set at the position C, it operates in the same way as in the state A described above. However, when the ignition plug 20 is set in position 2, that is, in a place where the swirling direction a of the combustion air and the ascending direction b of the ignition flame are substantially the same, the swirling direction c of the ignition flame is set in the swirling wind. It has been found that the ignition flame can be placed in the same direction as the swirling wind, and the entire flame can be quickly and accurately swirled along the inner periphery of the horizontal combustion tube 1 under strong conditions.

In view of the above, the present invention has been developed by arranging the ignition plug to face the horizontal combustion cylinder in which the direction in which the combustion air swirls and the direction in which the ignition flame rises are approximately the same, so that the ignition flame can flow smoothly and in a strong state. The inside of the horizontal combustion cylinder is quickly rotated by the swirling wind, and the fuel scattered all over the inside circumference of the horizontal combustion cylinder is instantly combusted after the ignition operation, ensuring a precise transition from the raw combustion state to the vaporization combustion state. The present invention is intended to provide an ignition combustion accelerating device for a vaporizing burner that achieves the above-mentioned results, and the configuration of the device according to the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings.

In FIG. 1, 1 is a horizontal combustion tube with an open front end, 2 is an outer tube that covers the outer periphery, and between the horizontal combustion tube 1 and the outer tube 2 is a gas chamber 3 whose tip is sealed. The horizontal combustion tube 1 is provided with a large number of flame holes 4 that communicate with the gas chamber 3. 5 is a rotary vaporizing cylinder with a closed tip and an open base end,
The rotary carburetor cylinder 5 is placed over a rotary shaft 6 inserted from the bottom side of the horizontal combustion cylinder 1, and its tip is directly connected to the shaft end. A blower tube 9 is deeply inserted into the rotary carburetor 5 and communicates with a blower chamber 8 connected to the bottom side of the horizontal combustion tube 1 via a heat insulator 7. An air mixture passage 10 is formed between the blower tube 9 and the air blower tube 9 . The mixture gas passage 10 and the gas chamber 3 are communicated with each other by a mixture gas passage 11. Further, the base end edge of the rotary vaporizing tube 5 is a fuel scattering edge 5a which is curved outwardly, and the fuel scattering edge 5a fixed to the rotary vaporizing tube 5 is opposed to the fuel scattering edge 5a. A fuel oil scattering gap 13 is formed between the annular body 12 and the annular body 12 . A rotating gap 14 is provided between the base end side of the rotary vaporizing cylinder 5 and the bottom wall of the horizontal combustion cylinder 1 and the fuel scattering annular body 12.
A fumarole chamber 15 is formed between the two, and the fume chamber 15 is communicated with the blowing chamber 8 through a ventilation pipe 16. A large number of fumarole holes 17 having an appropriate shape are bored in the outer wall of the fumarole chamber 15, and the opening edge of each of the fumarole holes 17 directs combustion air in a direction tangential to the fume chamber 15. A jet guide body 18 is provided to direct the jet toward the horizontal combustion cylinder 1 and generate a swirling wind that swirls along the inner periphery of the horizontal combustion cylinder 1. Reference numeral 19 denotes an ignition flame swirl promoting ring whose one end is attached to the inner circumferential surface of the horizontal combustion tube 1 which is closer to the inner bottom side than the setting position of the flame hole 4, and the tip edge of the ignition flame swirl promoting ring 19 is a rotary vaporizer. It is bent inward to face the tube 5. Reference numeral 20 denotes an ignition plug located at a position where the swirling direction a of the combustion air and the flame upward direction b of the ignition flame are substantially the same, and which is located inside the horizontal combustion tube 1 inside the ignition flame swirling promotion ring 19. be. 21 is an oil supply pipe,
The tip of the fuel supply pipe 21 faces a conical fuel diffuser 22 fixed to the tip inside the rotary vaporizing cylinder 5 in close proximity.

The vaporizing burner described above has a gas chamber 3 around a horizontal combustion tube 1, and mixes the vaporized gas generated in the rotary vaporization tube 5 after starting live combustion with combustion air to form a complete mixed gas. This example shows a case where vaporization combustion is carried out over a long period of time by pressurizing the mixed gas into the gas chamber 3 and directing the mixed gas to the rotary vaporization tube 5 for fumarole combustion. This can also be achieved with another embodiment of the vaporizing burner shown in FIG. In the vaporizing burner of this embodiment, no gas chamber 3 is provided in the horizontal combustion tube 1, and the mixed gas passage 11 is blocked by the jet guide wall 23, so that the vaporized gas generated in the rotary vaporization tube 5 is A mixed gas with combustion air is combusted through a jet duct 24 formed between a jet guide wall 23 and an annular fuel scattering body 12. 25 is a communication window for communicating the blowing chamber 8 and the fumarole chamber 15.

Next, the operation of the present invention will be explained with reference to the embodiment shown in FIGS. 2 and 3.

Now, if the rotary vaporizing cylinder 5 is rotated at high speed by the rotating shaft 6, forced air is sent from the blowing chamber 8 into the rotary vaporizing cylinder 5 through the blowing cylinder 9, and fuel is further supplied from the fuel supply pipe 21, the fuel is evenly diffused and transferred into the rotary vaporizing cylinder 5 by the centrifugal action of the circumferential surface of the fuel diffuser 22, mixed with forced air, and distributed in the fuel scattering gap 13.
It is ejected into the horizontal combustion cylinder 1. If the spark plug 20 is used to ignite the flame, raw combustion will occur within the horizontal combustion tube 1. Then, the rotary vaporizer cylinder 5 is heated by the combustion flame generated by the raw combustion, and when it reaches the evaporation temperature of the fuel, the fuel supplied into the rotary vaporizer cylinder 5 is evaporated and vaporized, and a forced air is generated in the air-fuel mixture passage 10. The mixture becomes mixed gas, and the mixed gas passes through the mixed gas passage 11.
Air is stored in the gas chamber 3 through the The mixed gas stored in the gas chamber 3 is ejected from the flame hole 4 of the horizontal combustion tube 1 into the horizontal combustion tube 1 at a constant pressure to vaporize and burn, and the vaporization and combustion state is maintained thereafter. . By the way, when starting live combustion as described above, the combustion air sent through the vent pipe 16 is directed tangentially to the fume chamber 15 along the fume guide body 18 through the many fume holes 17 opened in the outer wall of the vent pipe 16. The ignition plug 20 does not eject all at once towards the horizontal combustion tube 1 and swirl vigorously along the inner circumferential surface of the horizontal combustion tube 1, but the upward direction b of the ignition flame is approximately the same as the swirling direction a of the combustion air. Therefore, when a part of the fuel sprayed onto the entire inner peripheral surface of the horizontal combustion tube 1 by the rotating carburetor 5 is ignited by the ignition plug 20, the ignition flame rides on the swirling wind. Since the ignition flame swirls smoothly and strongly around the inner circumferential surface of the horizontal combustion tube 1 along the ignition flame swirl promotion ring 19, other fuel scattered on the inner circumferential surface of the horizontal combustion tube 1 is instantly ignited and ignited by the swirling ignition flame. Combustion occurs, complete combustion is achieved by the supply of swirling combustion air, and the rotary vaporizing cylinder 5 is heated quickly to the vaporizing atmosphere temperature. Therefore, the above-mentioned action not only ensures the start of live combustion, but also speeds up the transition to vaporization combustion, making it possible to achieve good vaporization combustion in a short period of time.

In short, since the present invention has the above-mentioned configuration, even if the burner is equipped with the horizontal combustion tube 1, the ignition flame ignited by the ignition plug 20 at the start of live combustion can be easily generated. The rotating carburetor 5 is quickly swirled under strong conditions along the inner peripheral surface of the horizontal combustion tube 1 on the swirling wind of combustion air.
The fuel sprayed over the entire inner circumferential surface of the horizontal combustion tube 1 can be instantly and completely combusted by the swirling ignition flame and the replenishment assisting effect of the swirling wind, making it possible to accurately start live combustion. The generated ignition flame is prevented from accidentally being ejected into the open flame of the horizontal combustion tube 1 by the ignition flame rotation promotion ring, and is kept in a strong state and swirled vigorously to further reduce the overall amount of blown fuel. This has the effect of further promoting ignition combustion, rapidly heating the rotary vaporization cylinder 5, and making the transition to vaporization combustion occur within a short time.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention, in which Fig. 1 is a front view explaining the principle, Fig. 2 is a front view of a vaporizing burner equipped with a gas chamber, and Fig. 3 is a partially cutaway view of Fig. 2. FIG. 4 is a partially cutaway longitudinal plan view of a vaporizing burner without gas. 1...Horizontal combustion tube, 5...Rotating carburetor tube, 15...
... Fumarole chamber, 19... Ignition flame rotation promotion ring, 20
...Spark plug, a...Swirling direction of combustion air, b...
The rising direction of the ignition flame, c...the turning direction of the ignition flame.

Claims (1)

[Scope of utility model registration request] A part of the combustion air is pumped along the horizontal combustion tube from a blow chamber provided between the bottom wall of the horizontal combustion tube and the base end of the rotating carburetor which can scatter fuel or generate vaporized gas. In a vaporizing burner that shifts from a raw combustion state to a vaporizing combustion state by swirling the fumes, an ignition flame swirl promoting ring whose tip edge is bent inward is installed in the horizontal combustion cylinder, and the ignition flame swirl Ignition combustion promotion in a vaporizing burner characterized by having an ignition plug facing into a horizontal combustion cylinder inside a promotion ring and at a position where the swirling direction of combustion air and the rising direction of the ignition flame are approximately the same direction. Device.