JPS6255046B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vaporizing burner that atomizes and sprays fuel to cause raw combustion, and then evaporates and burns the fuel by heating with the combustion flame.

Previously, the present applicant installed a rotary vaporizer in a combustion cylinder, and the fuel supplied with forced air into the rotary vaporizer is atomized and blown to live combustion, and the heating of the rotary vaporizer converts the fuel into evaporated gas. We have developed a vaporization burner that creates a gas mixture with forced air and vaporizes it in the combustion cylinder, and its implementation has achieved considerable effects, such as making it possible to completely burn liquid fuel as efficiently as vaporized fuel. is playing.

By the way, in the above-mentioned vaporizing burner, an ignition plug is provided in one place in the combustion cylinder, and when the burner is started, the fuel that has been atomized and sprayed into the combustion cylinder from the rotary vaporizer is ignited by the above-mentioned ignition plug. However, the atomized fuel sprayed from the rotary vaporizer into the combustion cylinder is difficult to spread evenly around the entire circumference, which may make ignition by the spark plug unstable.
The actual situation was that there were various points that required improvement, such as the live combustion flame not circulating quickly throughout the combustion cylinder, the heating of the rotary vaporizer taking time, and the transition to vaporization combustion being delayed. .

In view of the above, the present invention includes a groove-forming wall that is provided at the bottom of the periphery of the combustion cylinder, spaced apart from the combustion cylinder, and having cut-and-raised blades for air intake or a large number of ventilation holes perforated on the upper side, extending all around the combustion cylinder. By forming an ignition promoting groove with a long depth and an open top surface between the inner circumferential surface of the combustion cylinder and the outer circumferential surface of the groove forming wall, and disposing the spark plug directly above the ignition promoting groove, The atomized fuel sprayed into the combustion cylinder is made to float in the narrow ignition promoting groove by the forced swirling wind and the air taken into the ignition promoting groove through the vent in the cut and raised blade area. While stirring and mixing, the mixture is quickly and evenly distributed around the entire circumference of the combustion cylinder, ensuring ignition when starting the burner, causing rapid live combustion throughout the combustion cylinder, and vaporizing in a short time. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is intended to provide a vaporizing burner capable of transitioning to combustion, and the configuration of the present invention will be described below with reference to preferred embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a combustion tube with an open top end and a closed bottom. A ventilation chamber 2 is connected to the center of the bottom of the combustion tube 1, and the inside of the combustion tube 1 is opened from the ventilation chamber 2 side. A rotary vaporizer 4 whose upper end is closed and whose lower end is open is attached to the tip of the rotary shaft 3 inserted in the rotary shaft 3 so as to cover the rotary shaft 3. and the rotary vaporizer 4
A fuel oil diffusion convex portion 5 is integrally formed in a bulge at the center of the upper end, and the tip of a fuel supply pipe 6 piped from the ventilation chamber 2 side is closely opposed to the inner peripheral surface of the fuel diffusion convex portion 5. Below, a fuel diffusion tray 7 is integrally attached to the rotary vaporizer 4 with a fuel spray gap 8 maintained therebetween. Reference numeral 9 denotes a blower tube, and the base end of the blower tube 9 communicates with the blower chamber 2, and the other end faces near the fuel diffusion tray 7 of the rotary vaporizer 4. Gas chamber bottom wall 1 integrally extending outward at the end
0 is fixed to the combustion tube 1 by fixing it to the bottom surface of the combustion tube 1 with support pins 11, 11, . . . . Between the bottom surface of the combustion tube 1 and the gas chamber bottom wall 10, there is a fumarole gap 12 that communicates from the blow chamber 2 to the inner peripheral part of the combustion tube 1.
is formed. Inside the rotary vaporizer 4 is a partition wall 13
An air mixture chamber 14 is formed on the outside thereof, and a gas chamber 15 is formed between the inside and the bottom wall 10 of the gas chamber. It is fixed with a scattering gap 16 maintained, and its outwardly protruding portion forms a fuel scattering edge 17.
It is becoming. At the interface between the mixed gas chamber 14 and the gas chamber 15 of the partition wall 13, mixed gas vents 18 and 1 are provided.
8... is formed, and air mixture vanes 19, 19... are provided in the air mixture chamber 14, and these air mixture vanes 19, 19... are fixed to the bottom part of the partition wall 13. There is. A flame nozzle 20 is formed between the fuel splashing end 17 and the gas chamber bottom wall 10. Further, an ignition promoting groove 21 having an open upper surface is formed around the bottom surface of the combustion tube 1 over the entire circumference thereof. That is, reference numeral 22 denotes a groove-forming wall erected to face the lower part of the peripheral wall of the combustion tube 1, and the groove-forming wall 22 is lower than the fuel splashing end 17. An ignition plug 23 is disposed directly above the ignition promoting groove 21 of the combustion tube 1 . Note that a drain pipe 24 may be attached to a suitable position on the bottom surface of the ignition promoting groove 21.

The upper part of the groove forming wall 22 of the ignition promoting groove 21 is formed into a cut-and-raised blade 25 as shown in FIGS. 2 and 3, or a groove forming wall as shown in FIG. Numerous ventilation holes 26, 2 on the top of 22
6... are formed so that a large amount of air can be taken into the ignition promotion groove 21.

Next, the operation of the present invention will be explained.

Now, when starting the burner, the rotary vaporizer 4
is rotated at high speed to blow forced air from the blow chamber 2 through the blow tube 9 into the rotary vaporizer 4, and at the same time, if fuel is supplied from the fuel supply pipe 6, the inner peripheral surface of the fuel diffusion convex portion 5 and the fuel diffusion The fuel is subjected to centrifugal action on the upper surface of the saucer 7, is diffused along the inner circumferential surface of the rotary vaporizer 4 from the fuel spray gap 8, and is atomized and sprayed into the combustion tube 1 from the fuel spray end 17 through the fuel scatter gap 16. be scattered. Therefore, if it is ignited by the spark plug 23, live combustion will occur within the combustion tube 1, but the atomized fuel sprayed into the combustion tube 1 will be transferred to the ignition promoting groove 2 at the bottom of the periphery of the combustion tube 1.
1, the swirling forced wind is injected toward the inner periphery of the combustion cylinder 1 through the fumarole gap 12, and the cut-and-raised blades 25 provided on the upper part of the groove forming wall 22 or the numerous vent holes 26 The ignition promoting groove 21 is stirred and mixed with the air taken into the ignition promoting groove 21.
Since the raw combustion flame quickly rotates around the entire circumference along the
As a result, raw combustion occurs throughout the combustion tube 1 immediately after ignition. When raw combustion occurs in the combustion tube 1, the combustion flame heats the rotary vaporizer 4 to the evaporation temperature of the fuel, so the fuel diffused within the rotary vaporizer 4 evaporates and vaporizes. The vaporized gas is mixed with the forced air blown from the blower tube 9 in the air mixture chamber 14 to form an air mixture, and the air mixture flows into the gas chamber 15 through the vents 18, 18, and is stored. . The mixed gas stored in the gas chamber 15 is ejected from the flame nozzle 20 into the combustion tube 1 at a constant pressure, is vaporized and burned within the combustion tube 1, and continues in this state thereafter.

By the way, as mentioned above, at the time of ignition, the provision of the ignition promoting groove 21 causes the live combustion flame to instantly spread throughout the combustion tube 1, so that the heating of the fuel to the vaporization temperature by the raw combustion flame is prevented. The time is also extremely short, and therefore the transition time to vaporization combustion can be significantly shortened. Furthermore, when the spark plug 23 ignites, the atomized fuel circulates all around the ignition promoting groove 21, so there is no possibility of ignition failure.

In short, the present invention provides a rotary vaporizer 4 in a combustion tube 1 with an open top end and a closed bottom, and atomizes and sprays fuel supplied into the rotary vaporizer 4 with forced air into the combustion tube 1. In a device that performs raw combustion and heats the rotary vaporizer 4 by the raw combustion flame to generate a mixed gas of evaporated fuel gas and forced wind, and vaporizes and burns it in the combustion tube 1, the bottom of the periphery inside the combustion tube 1 is heated. A groove-forming wall 22 with cut-and-raised blades 25 for air intake or a number of vent holes 26 perforated on the upper side at a distance from the combustion tube 1 is erected all around the combustion tube 1.
Since the ignition promoting groove 21 having a long depth and an open upper surface is formed between the inner circumferential surface and the outer circumferential surface of the groove forming wall 22, and the ignition plug 23 is disposed directly above the ignition promoting groove 21, the combustion tube 1, the swirling forced air and the cut-and-raised blade 25 area provided on the upper side of the groove forming wall 22 transfer the atomized fuel sprayed into the narrow ignition promoting groove 21 along with the air taken in from the vent 26. It is possible to rapidly and evenly spread the gas throughout the entire circumference of the combustion tube 1 while retaining it in an agitated state, and to ensure ignition when starting the burner. The effect is that the atomized fuel swirling in the outer ignition promoting groove 21 can be completely combusted by the replenishment action by causing raw combustion to significantly shorten the transition time to vaporized combustion.

[Brief explanation of the drawing]

The drawings show an embodiment of the vaporizing burner according to the present invention, in which Fig. 1 is a partially cutaway longitudinal sectional front view, Fig. 2 is a partially enlarged perspective view of another example, and Fig. 3 is a plan view of the same. , FIG. 4 is a partially enlarged vertical sectional view of another example. DESCRIPTION OF SYMBOLS 1... Combustion tube, 4... Rotating vaporizer, 21... Ignition promotion groove, 22... Groove forming wall, 23... Spark plug,
25...Cut-up blade, 26...Vent.

Claims (1)

[Claims] 1. A rotary vaporizer is installed in a combustion cylinder with an open top end and a closed bottom, and the fuel supplied with forced air into the rotary vaporizer is atomized and sprayed into the combustion cylinder to cause live combustion. In a device that generates a mixed gas of evaporated fuel gas and forced air by heating the vaporized body and vaporizes and burns it in the combustion tube, air is placed at the bottom of the inner periphery of the combustion tube at the upper side at a distance from the combustion tube. A groove-forming wall with cut-and-raised blades for intake or a large number of ventilation holes is erected around the entire circumference, and a long open upper surface is created between the inner circumferential surface of the combustion cylinder and the outer circumferential surface of the groove-forming wall. What is claimed is: 1. A vaporizing burner characterized in that a shaped ignition promoting groove is formed, and an ignition plug is disposed directly above the ignition promoting groove.