JPH0435642B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention makes it possible to more efficiently generate vaporized gas and mixed gas from the evaporation of hot oil even when the outer mantle is fixed and the inner mantle is rotated. The present invention relates to a vaporizing burner that can automatically shift fuel from raw combustion to green flame vaporizing combustion.

Prior Art Conventionally, a tapered vaporization tube is fixed to the tip of a rotating shaft that protrudes toward the combustion chamber, and the opening on the enlarged diameter side of the vaporization tube communicates with a gas chamber equipped with a flame port that opens into the combustion chamber. With the gas introduction cylinder facing, an air passage is formed between the outer peripheral surface of the gas introduction cylinder and the inner peripheral surface of the vaporization cylinder,
A liquid fuel supply pipe is opened inside the vaporization cylinder, and the liquid fuel supplied to the inner end of the vaporization cylinder is diffused to the opening side of the vaporization cylinder by the centrifugal inside of the vaporization cylinder, and the liquid fuel is opened in the air passage. A combustion device capable of continuing good vaporization combustion by connecting a combustion air supply passage to the air passage and causing combustion and fuel air to flow countercurrently was developed before the filing of this application, for example, by
It is described in Japanese Patent No. 11762 and is well known.

Problems to be Solved by the Invention By the way, in the case of the above-mentioned known combustion device in which the direction of diffusion and transfer of fuel is simply made to flow counter-currently to the direction of flow of combustion air, evaporation generated in the air passage The vaporized gas is forced into the gas chamber along with the combustion air while riding the flow of the combustion air, and there is no means to actively stir and mix the evaporated vaporized gas and the combustion air during the flow process, so the air passage The evaporated vaporized gas generated therein and the combustion air were not reliably stirred and mixed, and the resulting mixed gas was not homogeneous, resulting in a problem that vaporization and combustion were not stable.

Therefore, in the first aspect of the present invention, a fixed mantle is disposed inside the combustion cylinder, and a rotating inner mantle is rotatably provided inside the fixed mantle via an air mixture passage. The fuel oil spattered by rotational centrifugal force is evaporated and vaporized while being diffused and flowed down along the inner circumferential surface of the fixed mantle, and the evaporated vaporized gas generated in the air mixture passage and intake combustion air are sucked into the pressure feeding blades. The purpose of this is to provide a vaporizing burner that is capable of evaporating and mixing homogeneous mixed gas while reliably suctioning it using a gas chamber, and then pressurizing it into the gas chamber to continue stable vaporizing combustion at all times. In the second invention, in addition to the object of the first invention, a mixed gas in which the generated evaporated gas and combustion air are stirred and mixed is suctioned and pumped by the pumping action of the pressure-feeding blades. The purpose is to collide with the wall of the mixed gas chamber installed inside the gas chamber to further promote agitation and mixing, and to forcefully feed the mixed gas into the gas chamber as a complete mixed gas to continue stable vaporization combustion over a long period of time. The above problem is solved by providing a vaporizing burner having the following features.

Means for Solving the Problem Therefore, the technical problem of the present invention is that even if the outer mantle is of a fixed type and the inner mantle is of a rotary type, the evaporated vaporized gas generated in the air mixture passage and the intake combustion The object is to further promote stirring and mixing with the air used to quickly obtain a homogeneous mixed gas with no concentration, and to always continue stable vaporization combustion.

In order to solve the above-mentioned technical problem, in particular, the invention of item 1 has been developed to provide a fixed jacket which has a closed upper end, an open base end, and a peripheral wall formed as a fuel evaporating part, in a combustion cylinder having a gas chamber inside. A rotary inner mantle is rotatably disposed inside the fixed mantle with a space between the fixed mantle and the fixed mantle such that an air mixture passage whose one end is connected to the intake passage is provided, and Around the rotating inner mantle facing the fuel evaporation part, the evaporated vaporized gas generated in the air mixture passage and the combustion air sucked from the air intake passage toward the air mixture passage are directly stirred and mixed. A vaporizing burner is characterized in that a large number of suction and pressure blades are provided for introducing the mixed gas into the gas chamber after the mixture is fed under pressure into the gas chamber. A fixed mantle having a closed upper end, an open base end, and a peripheral wall formed as a fuel evaporator is disposed inside the fixed mantle, and one end is connected to the intake passage between the fixed mantle and the fixed mantle. A rotating inner mantle is rotatably disposed at intervals such that air mixture passages are formed, and a mixed gas chamber wall is further provided upright from the bottom wall side of the combustion tube inside the rotating inner mantle. A mixed gas chamber whose discharge side is connected to the gas chamber is provided between the inner mantle and the wall of the mixed gas chamber, and the evaporation gas generated in the mixed gas passage is provided around the rotating inner mantle facing the fuel evaporation section. A vaporizing burner characterized by being provided with a large number of suction and pressure blades that directly agitate and mix gas and combustion air drawn from an intake passage toward an air mixture passage and forcefully feed the gas through an air mixture gas chamber to a gas chamber. That is.

Action The above technical means works as follows (see Figure 1).

First, when starting combustion, when the rotating inner mantle 9 is rotated by the rotary shaft 8, the suction and pressure feeding blades 11 are also rotated in synchrony, sucking combustion air into the air mixture passage 14 from the intake passage 16, and then the suction and pressure feeding blades A mixture gas chamber 17 is provided inside the rotating inner mantle 9 by the pressure feeding action of the piece 11.
through the gas chamber 18, and finally the gas chamber 18.
More erupts. Therefore, when fuel oil is supplied into the fuel diffuser 27 of the fuel supply device 25 through the fuel supply pipe 30, the fuel is transferred in a diffused manner from the small diameter side to the large diameter side on the inner surface of the rotating inverted conical hollow body. , the fuel oil passes through the spouting gap 28 and is sprayed from the peripheral end of the upper wall 10 toward the inner peripheral surface of the fixed jacket 4 due to the rotational centrifugal force of the rotating inner jacket 9.

Therefore, at the time of fuel spouting, the side opposite to the fuel spouting position is sucked by the suction action of the pressure-feeding blades 11, and the intake passage 15,
From the ventilation window 16 to the mixture gas chamber 1 via the mixture passage 14
Even if there is a flow of combustion air towards the inside of the
The fuel oil flows through the upper wall 1 without being affected by air.
It is sprayed accurately toward the inner circumferential surface of the fixed jacket 4 by the action of rotational centrifugal force of 0. Then, the fuel that flows down toward the open end while being diffused along the inner peripheral surface of the fixed mantle 4 reaches the bent part 4a without flowing down from the curved part due to surface tension, and from this bent part 4a to the outside of the ventilation window 16. The fuel flows down onto the fuel receiving pan wall 12 at the position, is sprayed into the combustion tube 1 in the form of fine particles from the fuel scattering end 13, and is ignited to be burnt live. Then, the fixed jacket 4 is heated by the raw combustion flame generated in the combustion tube 1, and when the temperature in the air mixture passage 14 is raised or lowered to a temperature sufficient to evaporate the fuel, the supplied fuel is Fuel evaporation section 6
While being diffused and migrated along the inner peripheral surface, it is evaporated and vaporized.
Generates vaporized gas.

When the evaporated vaporized gas of the fuel is generated in the air mixture passage 14 as described above, the evaporated vaporized gas and the combustion air sucked into the air mixture passage 14 through the air intake passage 15 are both transferred to the suction and pressure feeding blade 11. It is sucked in by the air mixture gas chamber 17 provided in the rotary inner mantle 9 in a diffused and mixed state, and is further stirred and mixed while being retained in the mixed gas chamber 17 with a wide area. After the mixed gas becomes a completely homogeneous gas and is pumped into the gas chamber 18, it is combusted under constant pressure. In addition, in FIG. 2, the evaporated gas generated in the mixture passage 14 is sucked into the mixture passage 14 through the intake passage 15, and is forced into the mixture gas chamber wall 32 under stirring and mixing. and collide, further promoting the stirring and mixing action.
Therefore, the evaporated vaporized gas and the combustion air forced into the mixture gas chamber 18 are again subjected to the stirring and mixing action by the suction and pressure blades 11 and the stirring and mixing action by the collision with the mixture gas chamber wall 32. The mixed gas becomes completely homogeneous and is fed under pressure to the gas chamber 18, allowing good blue flame vaporization combustion to continue stably.

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

In FIG. 1, reference numeral 1 denotes a bottomed cylindrical combustion tube with an open upper end, and adjacent to the bottom wall side of the combustion tube 1 is an intake chamber 2 in which an electric motor 3 is housed. A combustion tube 1 and an intake chamber 2 are partitioned by a bottom wall of the combustion tube 1. 4 is formed by closing the upper end side with a closing wall 5, bending the base end open side periphery toward the outside, and then bending diagonally upward toward the open side of the combustion tube 1 with the bent portion 4a as a boundary. A fixed jacket whose peripheral wall is a fuel evaporator 6,
The fixed jacket 4 is suspended at the center of the combustion tube 1 via an appropriate number of attachment members 7.
Reference numeral 8 denotes a rotating shaft inserted into the fixed outer mantle 4 from the side of the intake chamber 2, and a rotating inner mantle 9 is directly connected to the tip of the rotating shaft 8. The above-mentioned rotating inner mantle 9 is provided with an upper wall 10 at the upper part which is slightly bulged with the central part facing upward.
A large number of suction and pressure sending blades 11 are provided radially around the body facing the fuel evaporation section 6, and are provided at the lower part so as to be deployed and extended so as to cover the vicinity of the base end open side of the fixed mantle 4 from the outside. The circumferential edge is bent upward and is formed into a cavity shape integrally equipped with a fuel receiving pan wall 12 whose end portion is formed as a fuel scattering end 13. Note that a slight gap is formed between the base end open side periphery of the fixed mantle 4 and the fuel oil receiving tray wall 12.
A slight gap is also formed between the closing wall 5 of the fixed outer mantle 4 and the upper wall 10 of the rotating inner mantle 9. 1
4 is an air mixture passage formed between the inner circumferential surface of the fixed outer mantle 4 and the outer circumferential surface of the rotating inner mantle 9;
The intake side of No. 4 is a ventilation window 16 provided in the fuel pan wall 12.
The evaporated gas generated in the intake passage 14 and the intake passage 15 are connected to the inside of the intake chamber 2 through a plurality of cylindrical intake passages 15.
and the combustion air sucked into the intake passage 14 through the ventilation window 16 by the suction action of the suction and pressure-feeding blades 11, and are stirred by the pressure-feeding action and placed inside the rotating inner mantle 9. The mixed gases are injected into the mixed gas chamber 17 and stirred and mixed with each other to form a complete mixed gas.

A combustion disc 19 is stretched over the entire inner circumferential surface of the cylinder wall and bottom wall of the combustion cylinder 1 located outside the periphery of the base end open side of the fixed jacket 4 at an appropriate distance from the combustion cylinder 1. The cylinder wall surface of the combustion disk 19 is provided with a large number of gas ejection holes 20 for directing the mixed gas toward the fixed mantle 4 and combusting it with jets.

At the lower part of the fuel oil pan wall 12, a guide wall body 21 is fixedly disposed with a slight gap in between, and the guiding wall body 21 has a mixed gas inlet 22 opened in the center and communicates with the mixed gas chamber 17. , Moreover, between the guide wall body 21 and the bottom wall of the combustion tube 1, there is a mixed gas inlet 2 on the base end side.
A gas passage 23 is provided which connects via 2 to the mixture gas chamber 17 and to the gas chamber 18 on the discharge side.

Reference numeral 24 denotes an annular gas ejection passage formed between the outer periphery of the fuel receiving tray wall 12 and the periphery of the central opening of the combustion disk 19. Reference numeral 25 denotes an oil supply device for supplying fuel by dispersing it along the inner surface of the rotary inner mantle 9, and the oil supply device 25 is constructed as follows. That is, on the inner surface of the central bulge of the upper wall 10 of the rotating inner mantle 9, there is a fuel spray gap 28 at the open end on the large diameter side of the inverted conical hollow body.
The upper wall 10 and the cover plate 26 are then fitted together with the fuel diffuser 27 formed by integrally attaching the cover plate 26.
and are directly connected to the rotating shaft 8 via a mounting fitting 29, and the small-diameter inner surface of the fuel oil diffuser 27 faces the opening at the tip of the oil supply pipe 30.

31 is an ignition plug disposed within the combustion tube 1.

The vaporizing burner shown in FIG. 2 shows an embodiment of the vaporizing burner according to the second invention. Air mixture gas chamber wall 3 standing up from the side
2 is inserted deeply into the gas passage 23 on the discharge side between the inner circumferential surface of the rotating inner mantle 9 and the outer circumferential surface of the mixed gas chamber wall 32.
A mixture gas chamber 17 is provided which is connected to the gas chamber 17 via the air mixture gas chamber 17, and the evaporation vaporized and combustion air, which are pumped under stirring and mixing by the suction and pressure blades 11, are transferred to the outer peripheral surface of the mixture gas chamber wall 32. The evaporated gas and the combustion air are stirred and mixed by colliding with each other.
Further, the complete and homogeneous gas mixture obtained by performing the combustion in the gas mixture chamber 17 is fed under pressure to the gas chamber 18, thereby making it possible to stably continue good blue flame vaporization combustion over a long period of time. It is something.

Therefore, in the vaporizing burner of the second invention,
The only difference is that the guide wall 21 is formed into a plate shape and the mixed gas chamber wall 32 is newly provided, and the other features are the same as those of the first invention.

In the first and second inventions, fuel is supplied to the inner surface of the upper wall 10 of the rotating inner mantle 9 in a diffused manner by the oil supply device 25, and then the fuel oil is supplied to the inner surface of the upper wall 10 of the rotary inner mantle 9.
After being diffused and transferred along the inner surface of the fixed outer mantle 4, it is sprayed toward the inner peripheral surface of the fixed outer mantle 4 by the rotating centrifugal force of the suction and pressure sending blades 11 that rotate in synchronization with the rotary inner mantle 9. , it is also possible to supply the oil to the surface of the upper wall 10, thereby making it possible to smoothly perform the lubricating action. Therefore, it goes without saying that the configurations of the gas chamber 18 and the oil supply device 25 described in the above embodiments may be other configurations without any problem.

Effects of the Invention In summary, since the present invention has the above-described specific configuration, even if the outer mantle 4 is fixed and the inner mantle 9 is rotatable, the rotating inner mantle 9
The evaporated vaporized gas and combustion air generated in the air mixture passage 14 are quickly sucked by the suction action of the suction and pressure feeding blades 11 that rotate integrally with the air-fuel mixture, and these are stirred using the suction and pressure feeding blades 11. Mixture gas chamber 2
2, and the agitation and mixing can be performed reliably, so that the obtained mixed gas is complete and homogeneous, and stable blue flame vaporization combustion can be carried out well over a long period of time. Of course, the evaporated vaporized gas and the combustion air, which are pumped into the mixture gas chamber 17 by the suction and pressure feeding action, collide vigorously against the mixture gas chamber wall 32 under the agitated and mixed state, and further This agitation and mixing is promoted, and even if the mixed gas chamber 17 has a very short length, it is possible to easily obtain a more homogeneous mixed gas.

[Brief explanation of drawings]

The drawings show embodiments of the vaporization burner according to the present invention, in which FIG. 1 is a partially cutaway longitudinal sectional front view of the vaporization burner according to the first embodiment, and FIG. 2 is a longitudinal sectional view of the vaporization burner according to another embodiment. FIG. 3 is a longitudinal sectional front view with a portion of the burner cut away. DESCRIPTION OF SYMBOLS 1... Combustion tube, 4... Fixed mantle, 5... Closing wall, 6... Fuel evaporation section, 8... Rotating shaft, 9... Rotating inner mantle, 10... Upper wall, 11... Suction pressure blade piece,
14...Mixture passage, 15...Intake passage, 17...Mixture gas chamber, 18...Gas chamber, 32...Mixture gas chamber wall.

Claims (1)

[Scope of Claims] 1. A fixed mantle having a closed upper end, an open base end, and a peripheral wall formed as a fuel evaporation part is disposed in a combustion cylinder having a gas chamber inside, and the inside of the fixed mantle is A rotary inner mantle is rotatably disposed between the fixed mantle and the rotary mantle at a distance such that an air mixture passage whose one end is connected to the intake passage is formed, and the rotary inner mantle faces the fuel evaporating section. In the surrounding area, the evaporated gas generated in the mixture passage and the combustion air sucked from the intake passage towards the mixture passage are directly stirred and mixed while being force-fed to the mixture gas chamber in the rotating inner mantle. A vaporizing burner characterized by being provided with a large number of suction and pressure blades that are introduced into a gas chamber. 2. A fixed mantle having a closed upper end, an open base end, and a peripheral wall formed as a fuel evaporation part is disposed in a combustion cylinder having a gas chamber inside, and inside the fixed mantle, there is a space between the fixed mantle and the fixed mantle. A rotary inner mantle is rotatably disposed between the rotary mantle and a space such that an air mixture passage whose one end is connected to the intake passage is formed. A gas chamber wall is erected to provide a mixed gas chamber between the rotating inner mantle and the mixed gas chamber wall, the discharge side of which is connected to the gas chamber, and a space around the rotating inner mantle facing the fuel evaporation section is provided. is a large number of suction and pressure blades that directly stir and mix the evaporated vaporized gas generated in the air mixture passage and the combustion air sucked from the intake passage towards the air mixture passage, and force the air into the gas chamber through the air mixture gas chamber. A vaporizing burner characterized by being provided with.