JPH0435643B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention allows even a thin water heater or space heater to be easily inserted into a combustion chamber, and to be more efficient due to the vaporized combustion flame rising. The present invention relates to a vertical vaporizing burner that can perform hot water supply work or heating work.

[Conventional technology] Conventionally, in order to increase the amount of combustion,
Even with a vaporizing burner whose combustion tube has a considerably large diameter, starting ignition of raw fuel can be performed reliably, making the transition from raw combustion to vaporizing combustion stable, and achieving large-capacity vaporizing combustion. In order to ensure stable continuation, the configuration is such that a combustion disk is placed on the inner bottom side of the flat combustion cylinder to form a gas chamber, and a fuel scattering space is provided in the central open part of the gas chamber. A gas jetting passage is formed between the central open part and the carbureting pipe by rotatably positioning the carbureting pipe provided with the gas jetting pipe. A combustion stabilizing device for a vaporizing burner having a tall annular ignition wall is well known and was described in, for example, Japanese Utility Model Publication No. 52-54033 before the present application.

[Problems to be Solved by the Invention] By the way, in this type of conventionally known flat type vaporizing burner, the air-fuel mixture pressurized into the gas chamber from the vaporizing cylinder is passed through a flat gas cylinder stretched over the bottom wall of the combustion cylinder. Because fumarole combustion was carried out through a large number of gas nozzles drilled in the combustion disk, the total area of the gas nozzles was smaller than that of conventionally known cylindrical combustion tubes in which gas nozzles were drilled in the cylinder wall. Therefore, the above-mentioned known vaporizing burner cannot efficiently vaporize and burn a large amount of mixed gas, so it cannot be used as a heating source burner for a thin water heater or space heater. Therefore, even if the flat combustion tube is formed into a polygonal shape to increase the flat area of the combustion tube in order to vaporize and burn a large amount of air-fuel mixture, the combustion tube becomes too large. The raw combustion flame or the vaporized combustion flame rising inside the annular ignition wall has sufficient combustion air, which may cause the problem that it cannot be used as a heating source burner for thin hot water heaters or space heaters. Without replenishment, incomplete combustion occurs, and soot builds up and adheres to the inside of the annular ignition wall, making it impossible to repeatedly perform good raw combustion and vaporization combustion, and as a result, effective heating of the vaporization cylinder becomes insufficient. As a result, the annular ignition wall was quickly burned out by the combustion flames, and the carburetor cylinder protruded above the combustion cylinder, making it impossible to reduce the height of the burner.

The present invention further expands the total area of the mixed gas jet without unnecessarily increasing the planar area of the flat and polygonal combustion tube, and efficiently vaporizes and burns a large volume of the mixed gas. It can be effectively used as a heating source burner for thin water heaters or space heaters, and the raw combustion and vaporized combustion that occur around the vaporized body when combustion starts are completely combusted without generating soot. In this way, the heating of the vaporized body can be further promoted, and in addition to eliminating the occurrence of burnout of the burner members, the height of the burner itself can be made lower by housing the vaporized body in the flat combustion body. The purpose is to provide a vertical vaporizing burner that can.

[Means for Solving the Problems] Therefore, the technical problem of the present invention is to increase the amount of evaporative combustion and to reduce raw combustion or evaporative combustion even if it can be used in a thin water heater or space heater. In order to achieve complete combustion of the gas and more accurately achieve effective heating of the vaporized material, the height of the burner is made lower.

In order to solve the above technical problems, the vertical vaporizing burner of the present invention has a structure in which the cross section is polygonal, and the top end is open and has a short vertical cylinder wall with a flat bottom. A flat combustion disk body with a large number of flame holes perforated around the entire circumference of the vertical cylinder wall and a recessed combustion chamber in the center of the bottom wall is arranged around the combustion body. A gas chamber is formed between the
The open side of a vaporized body rotatably disposed in the recessed combustion chamber is inserted through a fume chamber and a cold air blow passage leading to the fume chamber, and the cylinder wall circumferential surface and the bottom wall surface of the recessed combustion chamber are provided with: A large number of auxiliary flame holes are drilled into each gas chamber to cause part of the mixed gas in the gas chamber to explode along the vaporized body.

Further, the auxiliary flame hole opened in the bottom wall surface of the recessed combustion chamber can also be used as a drain hole for flowing unburned oil generated in the recessed combustion chamber into the gas chamber.

[Operation] The above technical means operate as usual (see drawing).

First, when starting combustion, the vaporizer 19 is rotated at high speed and forced air is applied to the vaporizer 19 and the fumarole chamber 1.
Blow air within 4 hours. Then, after the forced air passes through the inside of the vaporizer 19 and is injected into the gas chamber 10, the forced air flows through the combustion body 1 from the numerous flame holes 7 and the auxiliary flame holes 24.
At the same time, other forced winds flow into the fumarole chamber 14.
The cool air blows out from the air, passes through the cold blast passage 23, and enters the recessed combustion chamber 9.
Fumes are emitted along the cylinder wall 11 of the cylinder.

Under this condition, the vaporized body 19 of the rotating fuel
When oil is supplied to the inner surface, the fuel is diffused into a thin film, and is sprayed from the open end in the form of fine particles into the recessed combustion chamber 9, ignited by the ignition action, and immediately combusted live.

In this way, when a live combustion flame is generated in the recessed combustion chamber 9, the rising raw combustion flame causes the vaporized substance 19 to
The entire body is efficiently heated, and the temperature inside is quickly raised to the temperature at which vaporization occurs. Therefore, after that, the supplied fuel is quickly evaporated and vaporized while being diffused and transferred along the inner surface of the vaporized body 19, mixed with the generated forced air of vaporized gas, and becomes a complete mixed gas,
After being pressurized into the gas chamber 10, the gas is combusted all at once from a large number of nozzle holes 7 under a constant pressure condition.

On the other hand, a part of the air-fuel mixture pressurized into the gas chamber 10 rises as a fume through the auxiliary flame holes 24 that are formed in large numbers on the cylindrical wall 11 and bottom wall 12 side of the recessed combustion chamber 9, and becomes vaporized. Since the entire combustion body 19 is heated, even if the combustion body 1 is formed in a polygonal shape in contrast to the circular vaporization body 19, a large amount of mixed gas is continuously generated, and the gas mixture is heated through the combustion disk body 5 with a large jet area. It is possible to raise the vaporization combustion flame and continue the large capacity vaporization combustion for a long period of time.

In addition, even if raw combustion and vaporization combustion occur in the recessed combustion chamber 9 from the start of combustion, the forced air is blown into the recessed combustion chamber 9 from the cold air jet passage 23, so the raw combustion Both the combustion flame and the vaporized combustion flame are completely combusted by the replenishing action of combustion air, and the cylindrical wall 11, bottom wall 12 of the recessed combustion chamber 9, and the fumarole chamber 1 are completely combusted so that no soot or the like is generated or attached.
4 is moderately cooled and is prevented from being burnt out, and the vaporized body 19 is housed in the combustion body 1,
Since the height of the burner can be reduced, it can be effectively used as a heating source burner for flat water heaters or space heaters. Furthermore, even if unburned oil is generated in the recessed combustion chamber 9 at the start of combustion, the unburned oil can be made to flow down into the gas chamber 10 using the auxiliary flame hole 24 opened in the bottom wall 12. .

[Example] The configuration of a vertical vaporizing burner according to the present invention will be described with reference to a preferred example shown in the accompanying drawings.

In the drawing, 1 has a polygonal cross section,
It is a bottomed flat combustion body having a short vertical cylindrical wall 2 with an open upper end, and an annular bulging part 4 bulging outward in the center of the bottom wall 3, The combustion body 1 has a substantially similar shape to the combustion body 1 in which a large number of flame holes 7 are bored around the entire circumference of the vertical cylinder wall 6 and a recessed combustion chamber 9 is provided in the center of the bottom wall 8. A gas chamber 10 is formed between the combustion body 1 and the combustion disk body 5 by stretching the flat combustion disk bodies 5 at intervals.

The recessed combustion chamber 9 is formed by a cylindrical wall 11 and a bottom wall 12, and an opening 13 is formed in the center of the bottom wall 12.

Reference numeral 14 denotes a hollow annular fume chamber installed around the open end of the open portion 13, and the fume chamber 14 is connected to a blowing chamber 15 adjacent to the annular bulging portion 4 side of the combustion body 1. They are communicated via a plurality of air supply pipes 16, and a cold air blow window 17 is opened in the inner cylindrical wall of the blow chamber 14.

Reference numeral 18 denotes a rotating shaft inserted from the blowing chamber 15 side toward the center of the combustion body 1, and at the tip of the rotating shaft 18 is a vaporizer 19 whose base end is open so as to cover the rotating shaft 18. are directly connected.

The open end of the vaporizer 19 is bent outward and protrudes, and a fuel scattering plate 21 integrally provided at the upper part of the mixed cylinder 20, which has a hollow shape on the peripheral end surface, is connected to the end of the vaporizer cylinder 19. They are integrally attached so that a fuel scattering gap 22 is formed between them.

Reference numeral 23 denotes an annular cold air jet passage formed between the upper part of the fumarole chamber 14 and the mixed cylinder 20 attached to the open end of the carburetor cylinder 19;
The base end side of the air blower has a cold air blow window 17 and a gas chamber 10.
The above-mentioned vaporized body 19 is connected to the open part 1 to blow only the cold air into the recessed combustion chamber 9.
3, and the open side of the vaporized body 19 is recessed into the recessed combustion chamber 9 to come out from the fuel scattering plate 22 and connect to the fuel scattering plate 21.
The sprayed fuel inevitably hits the cylindrical wall 11 surface of the recessed combustion chamber 9 and becomes atomized, and the fuel is atomized between the cold air fumes.
The replenishment action from step 3 causes rapid raw combustion. Circumferential surface of cylinder wall 11 and bottom wall 1 forming recessed combustion chamber 9
A large number of auxiliary flame holes 24 are bored on the second side, and part of the mixed gas filling the gas chamber 10 is transferred to the vaporized body 19.
The inside of the vaporized body 19 is heated to the vaporized gas generation temperature by combustion of the fumarole, and vaporized gas is continuously generated.

25 is a blower tube whose bottom side is attached to the end of the communication port 26 which opens at the center of the annular bulge 4, and whose upper end opening faces the vicinity of the top of the vaporizer 19; , 27 is a hollow fuel diffuser integrally attached to the inner surface of the top of the vaporizer 19,
A fuel scattering gap of an appropriate size is provided between the inner surface of the vaporized body 19 and the upper end surface of the fuel oil diffuser 27. 28 is a fuel supply pipe for feeding fuel to the lower inner surface of the fuel diffuser 27. 29 is an ignition plug disposed inside the recessed fuel chamber 9.

Incidentally, if a large number of nozzle holes 7 are also perforated on the bottom wall 8 of the combustion disk body 5, a larger volume of mixed gas can be combusted with fumes, and the combustion heating efficiency can be improved. An auxiliary flame hole 24 bored in the bottom wall 12 of the recessed combustion chamber 9 serves as a drain to quickly flow the unburned oil into the gas chamber 10 when unburned oil is generated at the start of live combustion. Can also be used as a hole. The unburned oil that has flowed down into the gas chamber 10 may be discharged to the outside through a drain pipe 30 that is connected to the annular bulge 4 of the combustion body 1.

Therefore, even if the combustion body 1 and the combustion disc body 5 are both formed into a flat polygonal shape for the circular vaporization body 19, the total opening area of the flame holes 7 is significantly increased, and the combustion The heating effect of the vaporized body 19 is achieved by completely burning the raw combustion and vaporized combustion rising up in the recessed combustion chamber 9 without generating soot under good replenishment action. In addition, the cold air blown into the recessed combustion chamber 9 prevents burnout accidents and ensures good vaporization combustion over a long period of time. Since it is possible to obtain a flat vaporizing burner that can achieve the following, it can be effectively used as a heating source burner for a thin water heater or space heater.

[Effects of the Invention] In short, since the present invention has the above-mentioned specific configuration, the shapes of the combustion body 1 and the combustion disk body 5 can be made flat so as to be suitable for a thin water heater or space heater. Moreover, even when formed into a polygonal shape, the total area of the nozzle holes 7 is significantly increased compared to a conventional vertical burner, increasing the amount of combustion and improving the efficiency as a heating source. As much as possible, combustion air is effectively injected into the recessed combustion chamber 9 to completely burn raw combustion and vaporized combustion within the recessed combustion chamber 9, and to prevent burnout of the recessed combustion chamber 9. This not only makes long-term use possible, but also allows a portion of the mixed gas filled in the gas chamber 10 to be transferred to the recessed combustion chamber 9 through a large number of auxiliary flame holes 24.
In addition to the fact that the vaporized combustion flame is caused to rise along the vaporized body 19 to heat the vaporized body 19 and promote the generation of vaporized gas, the vaporized body 19 is housed inside the combustion body 1. Not only can the height of the burner be lowered, but even if unburned oil is generated in the recessed combustion chamber 9 at the start of raw combustion,
An auxiliary flame hole 24 that opens the unburned oil on the bottom wall 12
It is possible to prevent the fuel from flowing down into the gas chamber 10 and remaining in the recessed combustion chamber 9.

[Brief explanation of drawings]

The drawings show an embodiment of a vertical vaporizing burner according to the present invention, in which FIG. 1 is a longitudinal sectional front view with a portion cut away, and FIG. 2 is a plan view thereof. DESCRIPTION OF SYMBOLS 1... Combustion body, 2... Vertical tube wall, 5... Combustion disc body, 6... Vertical tube wall, 7... Flame hole, 9... Recessed combustion chamber, 10... Gas chamber, 11 ... Cylinder wall of the recessed combustion chamber, 12 ... Its bottom wall, 14 ... Fumarole chamber, 19
... vaporized body, 23 ... cold air fumarole passage, 24 ... auxiliary fumarole.

Claims (1)

[Scope of Claims] 1. Inside a bottomed flat combustion body having a polygonal cross section and a short vertical cylindrical wall with an open upper end, a large number of nozzle holes are provided around the entire circumference of the vertical cylindrical wall. A gas chamber is formed between the combustion body and the combustion disk by arranging a flat combustion disk with a hole in the bottom wall and a recessed combustion chamber in the center of the bottom wall, and a gas chamber is provided in the recessed combustion chamber. The open side of the vaporizer rotatably disposed through the cool air blow passage leading to the fumarole chamber is recessed, and the cylindrical wall circumferential surface and bottom wall surface of the recessed combustion chamber are provided with a portion of the mixed gas in the gas chamber. A vertical vaporizing burner characterized in that each section has a large number of auxiliary flame holes for emitting flame along the vaporized body. 2. Claims characterized in that the auxiliary flame hole opened in the bottom wall of the recessed combustion chamber can also be used as a drain hole for flowing unburned oil generated in the recessed combustion chamber into the gas chamber. 1st
Vertical vaporizing burner as described in section.