JPH0368290B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention quickly preheats a gas generating body and a combustion body disposed adjacent to each other to a vaporized gas generation atmosphere temperature, and thereafter evaporates and vaporizes the fuel supplied together with the combustion air. The present invention relates to a vaporizing burner that easily achieves complete combustion of a preheated combustion flame for vaporizing and burning a complete mixed gas from a large number of flame 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 openings on the surface is disposed adjacent to the combustion body, and the tip side of the gas generating body is connected to the combustion body through a communication window. 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, a part of the preheating combustion flame emitted from the flame nozzle is directed toward the gas generating body. The fuel is ejected and heated from the outside, and then the fuel supplied into the gas generating body together with the combustion air is evaporated and vaporized by the preheating action to form a mixed gas, and then the flame is ejected upward from the nozzle of the combustion body. The present applicant has developed a number of vaporizing burners which are designed to continue vaporizing combustion by heating the gas generating body from the surroundings and causing it to flame up.

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 other than the flame nozzle is sealed and sealed, the preheating combustion flame introduced into the combustion body from the gas generator gradually fills the combustion body and stagnates, causing it to flow back toward the gas generation body. 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, even if the present invention is a vaporizing burner in which a gas generation chamber and a combustion body are arranged adjacent to each other, the tip side of the gas generation chamber is connected to the opposite side of the combustion body to the proximal end of the gas generation chamber. Connected to via a circulation window,
The preheating combustion flame is not filled and stagnated inside the combustion body, but can freely circulate through the gas generation chamber and the inside of the combustion body, thereby increasing the size of the combustion chamber and achieving complete combustion of the preheated combustion flame. In addition, by promoting the preheating of the gas generation chamber and the combustion body, automatic transition from the raw combustion state to the vaporization combustion state can be achieved within a short time, thereby stably continuing the vaporization combustion. The purpose of the reflux window is to provide a vaporizing burner in which the preheating combustion flame and the vaporizing combustion flame can be adjusted by arbitrarily adjusting the degree of closing or opening according to the combustion state.

In view of the above, and in order to achieve the above object, the present invention has an internal hollow gas chamber, and a combustion disk having a surface with a large number of gas ejection holes, which is located approximately in the center of a combustion body. In this case, a gas generation chamber through which a preheated combustion flame can flow inside is arranged adjacently, and the combustion body and the gas generation chamber are connected to an inflow window through which a preheated combustion flame in the gas generation chamber can flow into the combustion body, A vaporizing burner is characterized in that a part of the preheated combustion flame that has flowed into the gas generating chamber is communicated with each other through a circulation window that allows a part of the preheated combustion flame to flow back into the gas generation chamber, and the interior is a hollow gas chamber, and the surface is covered with a large number of gases. In a combustion body that is a combustion plate with a perforated jet hole, a gas generation chamber through which a preheated combustion flame can flow is arranged adjacently in the approximate center of the combustion body. They are communicated with each other through an inflow window through which preheated combustion flame in the room can flow into the combustion body and a circulation window through which a part of the preheated combustion flame that has flowed into the combustion body is circulated into the gas generation chamber,
The recirculation window is a vaporizing burner characterized in that the opening or the degree of opening is arbitrarily adjusted by an opening/closing damper. According to this vaporizing burner, when starting vaporizing combustion, the gas generation chamber and the combustion body are closed. Even if the preheating combustion flame generated in the gas generation chamber is made to flow into the combustion bodies arranged adjacently through the inflow window in order to preheat the vaporized gas generation atmosphere to the ambient temperature, the preheating combustion flame will flow from the combustion body to the reflux window. Since combustion can be carried out while the preheated combustion flame is recirculated back into the gas generation chamber, the area of the combustion chamber for the preheated combustion flame is significantly increased. Complete combustion may occur, causing the combustion disk to become clogged with the generated medium.
Alternatively, it is possible to easily achieve complete combustion of the preheated combustion flame without adhering a medium to the inner surface of the gas generating body or the combustion body, preheating the gas generation chamber and the combustion body from the inside within a short time, and at the same time The fuel is heated more than the outside by a part of the preheated combustion flame, and then the fuel sent into the gas generation chamber is quickly evaporated and vaporized, and the generated vaporized gas is mixed with the supplied combustion air. It is possible to automatically transition to vaporization combustion while mixing to create a complete mixture of gases, and at the same time, even before or after the transition to vaporization combustion, the recirculation window can be opened and closed by operating the damper to fully close or close the gas. The opening degree can be adjusted arbitrarily, and the recirculation amount of the preheating combustion flame or the recirculation amount of the mixed gas can be freely adjusted, and an appropriate and stable preheating action or vaporization combustion can be maintained at any time. play.

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

1 to 3, the combustion body and the gas generation chamber are connected by covering the concave wall surface integrally formed along the substantially center longitudinal direction of the flat combustion body with an arc-shaped cover plate. The vaporizing burner according to the first embodiment is arranged adjacently, and 1 has a flattened gas chamber 1 and a hollow gas chamber 2.
In addition, an arc-shaped recessed wall surface 3 is integrally formed along the longitudinal direction at approximately the center of the combustion disk 4, which is stretched on the upper surface side.
A combustion body other than the combustion plate 4 in which a large number of gas outlets 5 communicating with the gas chamber 2 are perforated on the surface thereof,
The bottom wall 6 side of the combustion body 1 facing the concave wall surface 3 is bulged outward.

7 is an arc-shaped cover plate placed so as to cover the upper part of the concave wall surface 3 of the combustion body 1;
By attaching the surrounding mounting edge 8 to the periphery of the recessed wall surface 3 via a fastener 9, a horizontally elongated gas generation chamber 10 whose interior is approximately circular in cross section is formed. The arcuate concave wall surface 3 and one base end side of the arcuate cover plate 7 are connected to the combustion body 1 by the same length, respectively.
Extending more outwardly, it provides mounting flanges 11 and 12 at its ends, respectively.

The combustion body 1 and the gas generation chamber 10, which are arranged adjacently as described above, have one inlet window 13 opened at the distal end side of the concave wall surface 3 and two openings at symmetrical positions on the proximal end side. The gas generation chamber 1 is connected through the circulation windows 14, 14 so that the insides communicate with each other.
The preheating combustion flame generated in the gas chamber 1 freely flows into the combustion body 1 from the gas generation chamber 10 through the inflow window 13, and then a part of the preheating combustion flame that flows into the gas chamber 2 flows through the two reflux windows. 14, 14 so that the preheated combustion flame can freely flow back through the combustion body 1 and the gas generation chamber 10, thereby increasing the area of the combustion chamber. It is possible to significantly achieve complete combustion of the preheated combustion flame. 15 are the two circulation windows 1
4 and 14 at the same time, or the degree of opening thereof can be arbitrarily adjusted.
It is arranged inside the proximal end of the.

The opening/closing damper 15 described above has a horizontally elongated hollow cylinder 16
A bent wall 17 with an opening at the center is integrally provided on the inner side of the base end side of the hollow cylinder 16, and the bent wall 17 has an appropriate number of ventilation holes 18...
are perforated at equal intervals.

And the operating rod 1 whose base end side is attached to the hollow cylinder 16
The other end of the hollow cylinder 16 extends outward from the elongated hole 20 formed in the arc-shaped cover plate 7, and a circulation window 14, 1 is provided on the peripheral wall of the hollow cylinder 16 on the side opposite to the mounting position of the operating rod 20.
Communication ports 21, 21 of the same shape that match 4 are opened to face each other.

Inside the opening/closing damper 15, a horizontally elongated hollow cylindrical blower tube 24 is disposed, which is integrally provided with a flange 23 attached to the mounting flanges 11 and 12 via a packing 22 on the base end side. A main air passage 25 is formed inside the opening/closing damper 15 and a sub air passage 26 is formed between the inside of the opening/closing damper 15 and the outside of the air tube 24 , and a flange 23 facing the ventilation hole 18 is formed.
The ventilation windows 27, which have the same shape as the ventilation holes 18, are opened at equal intervals on the surface of the ventilation holes 18, so that by rotating the operating rod 19, the circulation windows 14, 14 and the communication ports 21, 21 are fully opened. When the ventilation hole 18 and the ventilation window 27 are aligned, and when the circulation windows 14 and 14 are completely closed by blocking the peripheral wall of the hollow cylinder 16, the ventilation window 27 is also fully closed by the wall surface of the bent wall 17. form it so that it is Therefore, when the circulation windows 14, 14 are opened in an appropriate state, the ventilation window 27
The openings are also opened as appropriate to allow combustion air to flow into the sub-air passage 26.

28 is a blower for forcefully feeding combustion air into the gas generation chamber 10 through the main air passage 25 and the auxiliary air passage 26, and this is the ventilation tube 29 of the blower 28.
A flange 30 provided on the distal end side is appropriately attached to the flange 23.

31 is a spray nozzle disposed approximately at the center of the main air passage 25, and 32 is an ignition plug for igniting the spray nozzle. In addition, what is shown by the two-dot chain line in FIG. 1 is the fuel supply pipe 33, which is used instead of the spray nozzle 31 when the fuel is evaporated and vaporized by the preheating action and transitions to the vaporization combustion state. Fuel is supplied to the base end side of the concave wall surface 3 and evaporated by preheating. In addition, the combustion body 1 described above has a shape in which both left and right sides are erected upward as shown by the two-dot chain line in FIG. , the preheating effect of the gas generation chamber 10 may be promoted.

Reference numeral 34 denotes a spark plug for vaporization combustion, which is disposed so that its tip faces one side of the combustion disks 4, 4.

What is shown in Figures 4 to 6 is
Even when the concave wall surface 3' provided along the longitudinal direction of the combustion body 1' is provided separately from the combustion body 1', the heat transfer efficiency of the entire concave wall surface 3' can be improved. The second embodiment of the vaporization burner is capable of quickly evaporating and vaporizing the fuel supplied into the gas generation chamber 10' and continuing stable vaporization combustion for a long period of time. In the example, the substantially central surface of a flat combustion body 1' whose interior is formed as a hollow gas chamber 2' is opened 35 along the horizontal direction, and the surface other than this opening 35 is covered with a large number of It is covered by combustion disks 4', 4' having gas ejection holes 5'.... and said open 3
At the 5th position, an upright heat transfer wall 36 is integrally provided on the three peripheries on the tip side and the left and right sides, and a concave wall surface 3' having an arcuate lower half as a whole is provided inside the combustion body 1'. It is placed so that it is somewhat immersive, and
An inflow window 13' is opened at the distal end of the concave wall surface 3', and two circulation windows 14', 14' are opened at the proximal end.

Then, the arc-shaped cover plate 7' is placed so as to be located inside the heat transfer walls 36 provided on the three sides of the concave wall surface 3', and the combustion plates 4', 4' and the concave wall surface 3' The combustion body 1' and the gas generation chamber 10' are disposed adjacent to each other by connecting the three arc-shaped cover plates 7' and the inflow window 13' and the reflux windows 14' and 14'.
4' so that they communicate with each other.

Although the combustion disks 4', 4' in this embodiment are shown to be made of ceramic for the purpose of radiating infrared heat, the combustion disks 4', 4' may also be made of wire mesh or porous metal plates. Configurations other than the above are the first
The configuration is similar to that of the embodiment.

Further, in the case shown in FIGS. 7 to 9, the preheated combustion flame and mixed gas generated in the gas generation chamber 10'' are ejected upward and downward from the combustion body 1'', This is a third embodiment of the vaporizing burner in which the combustion amount is further increased, and in the third embodiment, the gas generation chamber 10'' is sealed at the distal end and opened at the proximal end. The gas generating chamber 10'' is formed into an oblong cylindrical shape, and is integrally provided with a rectangular mounting flange 37 for attachment to the flange 23 at the base end side of the gas generating chamber 10''. At symmetrical positions on both left and right sides of the horizontally long cylindrical gas generation chamber 10'', there are a large number of gas jet ports 5'' on both upper and lower surfaces.
Two left and right combustion bodies 1'', each consisting of a horizontal rectangular shape with perforated combustion plates 4a'' and 4b'', one side open, and a hollow gas chamber 2''inside;
1'' are mounted to face each other, and on both left and right sides of the distal and proximal ends of the gas generation chamber 10'', there are inflow windows 13'' communicating with the inside of the combustion chambers 1'', 1''.
13'' and circulation windows 14'', 14'' are opened to allow the preheated combustion flame to smoothly circulate between the gas generation chamber 10'' and the combustion bodies 1'', 1''.

Therefore, in the vaporizing burner of the third embodiment, communication ports 21'', 21'' are located at symmetrical positions on both left and right sides of the hollow cylinder 16'' of the opening/closing damper 15'' which opens and closes the circulation windows 14'', 14''. The structure is the same as that of the vaporizing burner of the first embodiment, except that two openings are provided in the hollow cylinder 16'' and an operating rod 19'' is mounted downwardly on the hollow cylinder 16''.

Next, its effect will be explained.

Now, in Figures 1 to 3, the operating lever 19
If the hollow cylinder 16 of the opening/closing damper 15 is rotated in one direction to align the circulation windows 14, 14 with the communication ports 21, 21 and fully open, the ventilation window 27 and the ventilation hole 18 will also align and open. state. Under such conditions, the blower 28 is operated to flow combustion air through the main air passage 25, the ventilation window 27, and the ventilation hole 18 into the sub air passage 26, while at the same time supplying fuel from the spray nozzle 31. When injected into the gas generation chamber 10 and ignited by the ignition plug 32, a preheating combustion flame is quickly generated. The generated preheating combustion flame flows inside the gas generation chamber 10 toward the tip side, and then flows into the combustion body 1 through the inlet window 13, preheating the combustion body 1, the recessed wall surface 3, and the inside of the gas generation chamber 10. Furthermore, part of the preheating combustion flame is ejected from the gas jet port 5, and the other preheating combustion flame is ejected from the recirculation window 1.
4 and 14 and the communication ports 21 and 21 into the sub-air passage 26, and is again circulated into the gas generator 10 together with the combustion air.

Therefore, a part of the preheating combustion flame is passed through the gas outlet 5.
Since the other preheating combustion flames are freely circulated while producing more flame, the area of the combustion chamber becomes significantly larger, and the flow rate becomes faster, resulting in complete combustion and preheating combustion that blows the gas generation chamber. Part of the flame heats the gas generating chamber 10 from the outside, and the temperature inside the gas generating chamber 10 is quickly raised to the temperature of the vaporized gas generating atmosphere. In this way, when the inside of the combustion chamber 1 and the gas generating body 10 reach a predetermined temperature, the fuel spraying action from the spray nozzle 31 is temporarily interrupted, the continuation of the preheating combustion flame is stopped, and then the preheating is performed. The fuel is sprayed from the spray nozzle 31 into the gas generation chamber 10 together with combustion air.

Then, the fuel is quickly evaporated and vaporized by the preheating effect during its circulation, and the generated vaporized gas is stirred and mixed with the combustion air during its circulation, becoming a complete mixed gas, and then passing through the inlet window 13. more into the combustion chamber 1,
A part of the mixed gas is made to flame up from a large number of gas outlets 5..., and at the same time, other mixed gas is passed through the circulation windows 14, 14, the communication ports 21, 21, and the sub-airflow path 26 into the gas generation chamber. 10.

In this way, a large number of mixed gases enter the gas nozzle 5...
... When the flames rise up from the gas generation chamber 10, the circulation windows 14, 14 are opened and closed by the circumferential wall of the hollow cylinder 16 of the damper 15 by operating the operating rod 19, and are completely closed. The mixed gas that has flowed into the combustion chamber 1 is stored in the combustion chamber 1 without being circulated, and is ejected from the gas outlet 5 to a constant pressure state, thereby stably continuing the vaporized fuel and creating a vaporized combustion flame that rises. The entire gas generation chamber 10 is heated from the outside by a part of the gas generation chamber 10, and thereafter, the evaporation action of the fuel sprayed into the gas generation chamber 10 is promoted. In addition, circulation window 1
4 and 14 are fully closed, the ventilation window 27
The combustion air is completely closed and the combustion air flows through the main air passage 25.
It is something that circulates inside.

Therefore, when the preheating combustion flame is generated, the preheating combustion flame fills and stagnates in the combustion chamber 1, causing the combustion chamber 1 to stagnate.
Since the gas does not flow back into the gas generation chamber 10, its complete combustion is easily achieved, and the gas outlet 5 is not clogged with the medium generated by incomplete combustion, or gas generation is prevented. It is possible to prevent the generation of vaporized gas from becoming unstable due to the attachment of the medium to the inner surface of the chamber 10 and the combustion body 1.

Moreover, the circulation windows 14, 14 are provided with opening/closing dampers 15.
Since the degree of opening can be arbitrarily adjusted, the amount of flame emitted from the gas ejection ports 5 can be adjusted by adjusting the recirculation amount of the preheating combustion flame and the mixed gas at any time.

Furthermore, since the combustion body 1 is constantly heated by the preheating combustion flame, the mixed gas generated during transition to vaporization combustion is prevented from becoming liquefied.

Further, in the vaporizing burner of the second embodiment shown in FIGS. 4 to 6, the concave wall surface 3' is connected to the combustion body 1.
Even if they are formed separately, a large number of gas ejection holes 5'...
The heat transfer wall 36 is intensely heated by a part of the combustion flame ejected from the flame, and the heat transfer action can preheat the entire concave wall surface 3' to the temperature of the vaporized gas generation atmosphere, so that the vaporization combustion state is changed from the preheat combustion state. Even in the event of a transition to the above, it is possible to reliably evaporate and vaporize the sprayed fuel, stably obtain mixed gas, and continue good vaporization and combustion.

Moreover, in the third embodiment of the vaporizing burner shown in FIGS. 7 to 9, the gas generation chamber 10''
Part of the preheated combustion flame that has flowed into the left and right combustion bodies 1'', 1'' is simultaneously ejected upward or downward from the gas ejection holes 5'' of the combustion plates 4a'', 4b'' provided on both the front and back surfaces. Even if the gas generation chamber 10'' is formed into a cylindrical shape, not only will the preheating effect be efficient, but also a large amount of generated mixed gas can be generated when transitioning to vaporization combustion. The combustion body 1″,
The flame can be ejected vigorously from both the front and back sides of the 1", and the effect as a heating device can be fully achieved.

[Brief explanation of drawings]

The drawings show a vaporizing burner according to the present invention, and FIGS. 1 to 3 show the vaporizing burner of the first embodiment, FIG. 1 is a longitudinal sectional front view with a part cut away, and FIG. 1 is a side sectional view taken in the direction of arrow A-A in FIG. 1, FIG. 3 is a developed perspective view, and FIGS. A vertical sectional front view with a section cut away, Figure 5 is Figure 4B
-A side sectional view in the direction of arrow B, FIG. 6 is an exploded perspective view, FIGS. 7 to 9 are a vaporizing burner of the third embodiment, and FIG. 7 is a partially cutaway front view; 8 is a side sectional view taken along the line CC in FIG. 7, and FIG. 9 is a developed perspective view. 1... Combustion body, 2... Gas chamber, 4... Combustion plate,
5...Gas blowout hole, 10...Gas generation chamber, 13...
...Inflow window, 14...Recirculation window, 15...Opening/closing damper.

Claims (1)

[Claims] 1. A gas generation chamber through which a preheating combustion flame can flow inside is placed adjacent to the combustion body approximately in the center of the combustion body, which has a hollow gas chamber inside and a combustion plate with many gas ejection holes perforated on the surface. In the case where the combustion body and gas generation chamber are arranged, the combustion body and the gas generation chamber are composed of an inlet window that allows the preheated combustion flame in the gas generation chamber to flow into the combustion body from the tip side, and a part of the preheated combustion flame that has flowed into the combustion body from the base end side. 1. A vaporizing burner, characterized in that the gas generating chamber is communicated with each other via a reflux window that allows the gas to flow back into the gas generation chamber, and the reflux window has an opening/closing damper to arbitrarily adjust the degree of closing or opening of the reflux window.