JPH0368289B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention quickly preheats a gas generating body and a combustion body that are connected to each other in communication with a flame interval to a vaporized gas generating atmosphere temperature, and then supplies the gas generating body with combustion air. The present invention relates to a vaporizing burner that easily achieves complete combustion of a preheating combustion flame for evaporating fuel and vaporizing it as a complete mixed gas through a large number of nozzles.

A gas generator in which a preheating combustion flame can flow,
A combustion body having a hollow gas chamber inside and a large number of flame nozzles opened on the surface is provided at intervals between the flames, and the tip side of the gas generating body is connected to the combustion body through a communication passage. The gas generating body and the combustion body are quickly preheated from the inside by the distribution action of the preheating combustion flame generated in the gas generating body, and at the same time, the preheating combustion flame is ejected from the flame nozzle toward the gas generating body and is heated from the outside. After preheating, the fuel supplied into the gas generating body along with the combustion air is evaporated and vaporized by the preheating action to form a mixed gas, and then the flame is ejected from the flame port of the combustion body toward the gas generating body. The present applicant has developed numerous vaporizing burners that are capable of continuing stable vaporizing combustion by heating the surrounding area.

By the way, in conventional vaporizing burners of this type, the fuel body to which the tip side of the gas generating body is connected is
Since the area around the nozzle is closed and sealed, the preheating combustion flame introduced into the combustion body from the gas generator gradually fills and stagnates inside the combustion body, causing it to flow back toward the gas generator. As a result, the preheating combustion flame falls into an incomplete combustion state due to the small area of the combustion chamber, and the flame nozzle is clogged with the generated medium, reducing the preheating effect of the gas generator. A large amount of medium also adheres to the inner surfaces of the gas generating body and the combustion body, significantly reducing the subsequent vaporized gas generation efficiency, and making it difficult to stably continue a certain amount of vaporized combustion.

Therefore, in order to solve the above drawbacks of the conventional vaporizing burner, the present invention connects the opposite side of the combustion body to which the distal end side of the gas generating body is connected to the base end side of the gas generating body via a circulation path, thereby preheating the burner. The combustion flame is not filled and stagnated inside the combustion body, but is allowed to freely circulate through the gas generating body and the combustion body, thereby increasing the combustion chamber and achieving complete combustion of the preheated combustion flame. , the preheating of the gas generating body and the combustor can be accelerated to automatically shift from the raw combustion state to the vaporization combustion state within a short time, and the subsequent vaporization combustion can be continued stably. Another object of the present invention is to provide a vaporizing burner in which preheating combustion and vaporizing combustion can be adjusted by arbitrarily adjusting the degree of closure or opening of the recirculation port depending on the combustion state.

In view of the foregoing, and in order to achieve the above object, the present invention has a structure including a gas generating body through which a preheating combustion flame can flow, and a hollow gas chamber inside, and furthermore, the surface is directed toward the gas generating body for preheating. A combustion body having a large number of flame openings that emit all or part of the combustion flame is provided at intervals between the flames, and the tip side of the gas generating body is connected to the combustion body through a communication passage. At the same time, the side opposite to the introduction side of the combustion body is connected to a vaporizing burner connected to the base end side of the gas generation body via a circulation path, a gas generation body through which a preheated combustion flame can flow, and an air inside. Gas chamber and no torso,
Moreover, in a combustion body having a plurality of flame openings on the surface thereof, which emit all or part of the preheating combustion flame toward the gas generation body, the combustion body is provided at intervals between the flames, the tip of the gas generation body The side is connected to the introduction side of the combustion body through a communication passage, and the side opposite to the introduction side of the combustion body is connected to the base end side of the gas generating body through a circulation passage, and the circulation passage can be closed or opened by an opening/closing damper. This is a vaporization burner whose degree is arbitrarily adjusted. According to this vaporization burner, the combustion chamber of the preheating combustion flame is used to preheat the gas generating body and the combustion body to the temperature of the vaporized gas generation atmosphere at the start of combustion. By significantly increasing the area, it reliably prevents the preheating combustion flame from filling and stagnating in the combustion body and flowing back from the combustion body side to the gas generation body side, and always allows the preheating combustion flame to flow from the combustion body through the circulation path and into the gas generation body. It is possible to easily achieve complete combustion by combusting it while circulating it again, and as a result, the flame nozzle is clogged with the medium generated by incomplete combustion of the preheated combustion flame, or the gas This eliminates the phenomenon of medium adhesion to the inner surfaces of the gas generating body and the combustion body, preheats the gas generating body and the combustion body to a predetermined temperature within a short time, and quickly evaporates the fuel that is subsequently supplied into the gas generating body together with combustion air. It is possible to vaporize and generate a mixture of vaporized gases and emit them from multiple flame holes, allowing stable vaporization and combustion to continue over a long period of time. After being transferred, the circulation flow path is closed by an opening/closing damper or the degree of opening thereof is arbitrarily adjusted to increase or decrease the circulation amount of the generated mixed gas at any time.
This has the effect of easily increasing or decreasing the amount of vaporized combustion.

Various embodiments of the vaporizing burner according to the present invention will be described below.

In the case shown in Figs. 1 to 4, both the gas generating body and the combustion body are formed into a horizontally long cylinder shape, and at the same time, the combustion body is disposed directly below the gas generating body with a flame interval between them. It is a vaporizing burner in which all of the flame is directed toward a gas generator, and 1 is a horizontally long cylinder-shaped gas cylinder with a slightly thicker connecting tube 2 on one side of the base end and a hollow inside. 3 is a combustion body located directly below the gas generation body 1 in a parallel manner with a flame interval 4, and the combustion body 3
Like the gas generator 1, the entire body has an oblong cylindrical shape,
Furthermore, the interior is formed as a hollow gas chamber 5, and a large number of flame nozzles 6 are opened on the surface of the upper half of the chamber for vigorously ejecting combustion flames toward the gas generating body 1. The distal end side of the gas generating body 1 is connected to the introduction side of the combustion body 3 via a communication path 7, and the side opposite to the introduction side of the combustion body 3 is connected to the base end side of the gas generating body 1 via a circulation path 8. The preheated combustion flame generated in the gas generating body 1 is introduced into the base end side of the gas generating body 1 through the combustion chamber 3, so that it can always circulate smoothly. . Reference numeral 9 denotes an opening/closing damper that can fully open or close the circulation path 8 and adjust its opening degree at any time. In addition, a circulation passage 8 is formed on the peripheral wall of this hollow cylinder 10.
A communication port 11 is opened that substantially coincides with the opening position of the communication port 11, and an operating rod 12 whose free end side extends outward from a long hole provided in the peripheral wall of the connecting tube 2 is provided on the peripheral wall opposite to the opening position of the communication port 11. The hollow tube 10 has a bending wall 1 opened at the center on one side of the hollow tube 10.
3 is bent inward to form a bent wall 13.
A suitable number of ventilation holes 14 are formed at equal intervals. Inside the hollow cylinder 10 of the opening/closing damper 9, a mounting collar 16 having a constricted distal end and extending outward toward the proximal end.
A hollow horizontally elongated air blowing tube 17 attached to the flange 15 provided on the proximal end side of the connecting tube 2 is disposed to connect the hollow tube 1.
A sub-air passage 19 is formed between the inner circumferential surface of the blower tube 17 and the outer circumferential surface of the blower tube 17, and a main air passage 18 is formed inside the blower tube 17. The same number of ventilation holes 20 that match the ventilation holes 14 are opened in the mounting collar 16 at equal intervals, and when the circulation path 8 is fully opened by rotating the operating rod left and right, the ventilation holes 14 and the ventilation holes are opened. 20 are fully opened at the same time, and when the circulation passage 8 is closed by the circumferential wall of the hollow cylinder 10 and is in a fully closed state, the positions of the vent hole 20 and the vent hole 14 are shifted, and the bent wall 13 closes the vent hole. 20 is fully closed and the recirculation passage 8 is opened to an arbitrary degree, the vent 20 is fully closed.
The opening degree of the opening can also be adjusted at any time accordingly. 21 is a spray nozzle housed in the center of the blower tube 17, 22 is a spark plug for starting combustion, and 23 is a vaporization combustion engine with its tip opening facing toward the bottom of the proximal end of the gas generator 1. This is an oil pipe for use. Base end side flange portion 15 of the aforementioned connecting tube 2
In this case, the tip side flange part 26 of the ventilation tube 25 equipped with the blower 24 at one end is connected, and the combustion air generated by the blower 24 is sent through the main ventilation path 18 and the sub-airflow path 19 or the main ventilation The gas is injected into the gas generating body 1 through the passage 18. Reference numeral 27 denotes a spark plug for vaporization combustion arranged near the flame nozzle 6 of the combustion body 3.

The one shown in FIG. 5 uses the oblong cylindrical combustion body 3 explained in FIGS. A vaporizing burner according to a second embodiment according to a modification of the first embodiment in the case where the combustion body 3' according to the second embodiment is arranged with a distance . The structure is the same as that of the first embodiment except that the interior is hollow to form a gas chamber 5' and a large number of flame nozzles 6' are opened on the upper surface of the combustion body 3'. Therefore, in the vaporizing burner of the second embodiment, the gas generating body 1 is heated by a portion of the combustion flame ejected from the flame nozzle 6'.

The vaporizing burner shown in FIGS. 6 and 7 divides the preheated combustion flame that has flowed in the gas generating body 1'' toward the tip side in two directions to the left and right, and distributes the preheated combustion flame to the left and right sides of the gas generating body 1''. This is the third embodiment in which the flames are introduced separately into two left and right combustion bodies 3'', 3'' arranged parallel to the gas generating body 1'' with a spacing of 4'', 4''. In the vaporizing burner of the third embodiment, the entire body has an oblong cylindrical shape with flame intervals 4'' and 4'' on both the left and right sides of one gas generating body 1'', and the inside is hollow. Two left and right combustion bodies 3'', 3'' with gas chambers 5'', 5'' are arranged in parallel,
A large number of flame nozzles 6'' are formed on the upper half surfaces of the two combustion bodies 3'', 3'' to direct part of the combustion flame toward the gas generating body 1''. Then, the tip end side of one gas generating body 1'' is connected to the inlet sides of two combustion bodies 3'', 3'' through two connecting paths 7'', 7'', and the inlet side The combustion bodies 3'', 3'' on the opposite side are connected to the connecting tube 2'' via return passages 8'', 8'', respectively.

Therefore, in the vaporizing burner of the third embodiment, the two circulation passages 8'', 8'' are simultaneously fully opened and closed, or the degree of opening is adjusted on the peripheral wall of the hollow cylinder 10'' of the opening/closing damper 9''. Communication port 11″ for arbitrary adjustment,
The structure is the same as that of the vaporizing burner of the first embodiment except that two holes 11'' are opened.

In this third embodiment, two spark plugs 27 for vaporization combustion are provided because there are two combustion bodies 3'', 3''.

Further, in the fourth embodiment shown in FIGS. 8 and 9, a donut-shaped combustion body 3 is placed horizontally with an annular flame interval 4 placed around a horizontally long cylindrical gas generating body 1. This is a vaporizing burner that is arranged so as to emit a combustion flame forward from the combustion body 3, and the combustion body 3 in the fourth embodiment is oriented horizontally as a whole and formed in a flat hollow annular shape. Moreover, the interior thereof becomes a hollow gas chamber 5, and a large number of flame nozzles 6 are opened on the front surface of the combustion body 3. 2 are arranged so that they are spaced apart from each other by a spacing of 4.

The tip side of the gas generating body 1 is connected to the introduction side of the upper front side of the combustion body 3 through an upwardly curved communication passage 7, and the combustion body 3 is connected to the opposite side from the introduction side through a circulation passage 8. An open connection is made to the cylinder 2 to introduce the preheated combustion flame flowing inside the gas generating body 1 toward the tip side into the combustion body 3, and at the same time, the preheated combustion flame is further transferred into the gas generating body 1 through the connecting cylinder 2. The structure of this embodiment is the same as that of the first embodiment, except that the oil supply pipe 23 is not provided in this embodiment and the fuel is supplied only by the spray nozzle 21. be.

Next, its effect will be explained.

Now, in Figures 1 to 4, the operating lever 12
If the communication port 11 provided in the hollow cylinder 10 of the opening/closing damper 9 is aligned with the circulation path 8 by adjusting the left and right rotation, the ventilation holes 14 will also be aligned with the ventilation holes 20 and both will be fully open. . When the blower 24 is operated under such conditions, the generated combustion air is blown into the gas generating body 1 through the main and sub-air blowing passages 18 and 19, and then into the communication passage 7 and the combustion body. 3. After being ejected into the sub-airflow path 19 through the circulation path 8 and the communication port 11,
The gas acts to be refluxed into the gas generating body 1 again.

Therefore, if fuel is sprayed from the spray nozzle 21 and ignited by energizing the spark plug 22 at the same time, a preheating combustion flame is generated within the gas generating body 1. This preheated combustion flame is completely combusted while being recirculated through the gas generator 1, the communication passage 7, the combustion body 3, the circulation passage 8, the communication port 11, and the sub-air passage 19 while being supplied with the combustion air. At the same time, a part of the preheating combustion flame is ejected from a large number of flame openings 6 toward the flame interval 4, and the emitted preheating combustion flame is preheated from inside. Heated from the outside with a flame.

Therefore, since the preheated combustion flame generated in the gas generating body 1 is smoothly circulated as described above, the combustion chamber is significantly enlarged, so that the backflow phenomenon due to the stoppage condition as in the conventional vaporizing burner occurs. Since the gas is completely combusted without any heat generation, the gas generating body 1 and the combustion body 3 are preheated to the vaporizing atmosphere temperature within a short period of time. After being preheated to a predetermined temperature in this way, the preheating combustion state is stopped,
Next, when the raw fuel is sent to the bottom of the proximal end of the gas generating body 1 from the oil feed pipe 23 while the blower 24 is operated, the raw fuel is blown toward the tip side by combustion air. In the meantime, the preheating action quickly evaporates and vaporizes the generated vaporized gas, which is stirred and mixed with the combustion air during its circulation, becoming a complete mixed gas.
It is pressurized into the combustion body 3 through the communication passage 7, and a part of the mixed gas is atomized from the flame nozzle 6 during the flame interval 4, and ignition of the spark plug 27 quickly causes vaporization combustion. ,
The gas generating body 1 is heated from the outside by all the vaporizing combustion flames. On the other hand, a part of the mixed gas pressurized into the combustion body 3 is circulated back into the gas generating body 1 from the combustion body 3 via the circulation path 8 and the communication port 11, and mixed with the newly generated mixed gas. and is press-fitted into the combustion body 3.

Therefore, after the fuel is transferred from the live combustion state to the vaporized combustion state, the operating rod 12 is rotated to operate the adjustment damper 9, and the circumferential wall of the hollow cylinder 10 closes the recirculation passage 8 completely. At the same time, the ventilation port 20 is also closed by the bending wall 13 and the sub-airflow path 19 is closed.
The air blowing action to the gas generator 1 is stopped, all of the generated mixed gas is blown out from the flame nozzle 6, the gas generator 1 is heated from the outside, and then the gas generator 1 is
The raw fuel fed into the tank is continuously converted into a mixed gas by the heating action and the replenishment action of combustion air,
Good vaporization combustion can be continued for a long period of time. In addition, even during transition to vaporization combustion or preheating combustion, if the operating rod 12 is rotated arbitrarily according to the combustion state and the opening degree of the circulation passage 8 and the vent 20 is adjusted at any time, the air-fuel mixture can be reduced. Not only can the amount of flame emitted from the nozzle port 6 be set to a desired amount by arbitrarily adjusting the amount of gas and the recirculation amount of the preheated combustion flame, but also because the combustion body 3 is preheated, vaporization can be achieved. The mixed gas generated during the transition of combustion is prevented from becoming liquefied by cooling.

In the vaporizing burner of the second embodiment shown in FIG. 5, the preheating combustion flame generated in the gas generating body 1 is introduced into the flat combustion body 3' through the communication passage 7. Then, a part of the preheating combustion flame is ejected from a large number of flame nozzles 6', and a part of the preheating combustion flame heats the gas generating body 1 from the outside.At the same time, the other preheating combustion flame is injected into the combustion body 3'. The gas generator 1
This complete combustion is carried out while allowing the fuel to flow back into the interior.
After preheating the gas generating body 1 and the combustion body 3' from the inside, the combustion is temporarily stopped, and thereafter, mixed gas is continuously generated by the same operation as in the first embodiment to continue stable vaporization combustion. can be done.

In addition, in the vaporizing burner of the third embodiment shown in FIGS. 6 and 7, the preheating combustion flame generated within the gas generating body 1'' is transmitted through two communication passages 7'',
7", two combustion bodies 3" are arranged on both the left and right sides of the gas generating body 1" with a flame interval of 4", 4",
3", and while preheating the gas generating body 1" and the left and right combustion bodies 3", 3" by the circulating action of the preheating combustion flame, a part of it is released from the numerous nozzles 6", 6". A part of the combustion flame heats the gas generating body 1'' from both the left and right sides, and the preheating combustion flame that has passed through the two combustion bodies 3'' is passed through the circulation passages 8'', 8'' and the communication port 1.
1'', 11'' and the auxiliary air passage 19 into the gas generating body 1'' to achieve complete combustion of the preheating combustion flame. After that, after temporarily stopping the generation of the preheating combustion flame, the first A mixed gas is generated by the same operation as in the embodiment, and a large volume of vaporization combustion is easily performed.

In each of the vaporizing burners of the first to third embodiments described above, the preheating combustion flame and the vaporizing combustion flame are ejected from the bottom to the top. In the vaporizing burner of the fourth embodiment shown above, the preheating combustion flame and the vaporizing combustion flame can be ejected forward. That is, the preheating combustion flame generated in the gas generating body 1 is introduced into the doughnut-shaped combustion body 3 through the communication passage 7, and is ejected forward from the numerous flame nozzles 6, thereby discharging the preheating combustion flame. The gas generating body 1' is preheated from the inside and outside by all or part of it, and a part of the preheated combustion flame introduced into the combustion body 3' is sent to the gas through the circulation path 8', the communication port 11 and the sub-air blowing path 19. It is circulated into the generator 1 to achieve complete combustion of the preheated combustion flame. Then, once the gas generator 1 is preheated to a predetermined temperature, the preheating combustion is temporarily stopped,
The raw fuel is again supplied to the gas generator 1 through the spray nozzle 21.
The mixed gas can be effectively generated by the same operation as in the first embodiment, and good vaporization combustion can be continued for a long period of time.

In short, in the present invention, even in a vaporizing burner in which a gas generating body and a combustion body are arranged with a flame interval, the combustion chamber of the preheating combustion flame is significantly enlarged, and complete combustion is prevented. , it is possible to shift to a good vaporization combustion state.

[Brief explanation of drawings]

The drawings show various embodiments of the vaporizing burner according to the present invention, and FIGS.
This is an embodiment, and FIG. 1 is a partially cutaway longitudinal sectional front view, and FIG. 2 is a sectional view taken along the line A-A in FIG. 1.
FIG. 3 is an enlarged longitudinal sectional front view with a portion of the main part cut away, and FIG. 4 is an exploded perspective view. FIG. 5 is a vertical cross-sectional side view of the second embodiment, FIGS. 6 and 7 are the third embodiment, FIG. 6 is a partially cutaway cross-sectional plan view, and FIG. - It is a side sectional view in the direction of arrow B. FIG. 8 and FIG. 9 are the fourth embodiment, and
FIG. 8 is a front view, and FIG. 9 is a partially cutaway vertical side view taken along the line C--C in FIG. DESCRIPTION OF SYMBOLS 1... Gas generator, 3... Combustion body, 4... Flame spacing, 5... Gas chamber, 6... Flame opening, 7... Communication path, 8... Circulation path, 9... Opening/closing damper .

Claims (1)

[Claims] 1. A gas generating body through which a preheating combustion flame can flow, and a gas chamber having a hollow gas chamber inside, and a large number of nozzles on the surface from which all or part of the preheating combustion flame is ejected toward the gas generating body. A combustion body with an open opening is provided with a flame interval, the tip side of the gas generation body is connected to the introduction side of the combustion body through a communication passage, and the side opposite to the introduction side of the combustion body is connected to the gas generation body. A vaporizing burner characterized in that the reflux passages are connected to the proximal end sides of the reflux passages through reflux passages, and the degree of closure of the reflux passages is arbitrarily adjusted by an opening/closing damper.