JP3096393B2 - Combustion cylinder of a core up-down type oil combustor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion cylinder for an up-and-down petroleum fuel combustor such as an oil stove.

[0002]

2. Description of the Related Art A conventional combustion cylinder 10 of this type of a core-inverted type petroleum combustor is constructed as shown in FIGS. 4 to 6, for example. Cylindrical side wall 12 in which ventilation holes 121 are formed, and side wall 1
2 and an upper vent plate 13 for closing the upper part of
And a lower ventilation hole 20 provided inside the side wall 12 near the lower portion of the side wall 12. The upper vent plate 13 has a vent 131 formed in a peripheral portion. Lower vent plate 2
In FIG. 0, a central ventilation hole 201 is formed in a central portion, and a peripheral ventilation hole 202 is formed around the central ventilation hole 201.

[0003] Outside the inner flame cylinder 11, an outer flame cylinder 15 having a cylindrical side wall in which a number of large and small vent holes 151 are formed is provided concentrically with the inner flame cylinder 11. Further outside the outer flame tube 15, a glass cylinder 16 is provided.
And are provided concentrically. Outer flame tube 15 and glass cylinder 1
The upper open portion of the gap with the outer flame 6 is attached to the outer flame tube 15, and the outer flame ring 17 in which the ventilation hole 171 is formed.
Is attached to the outer flame tube 15 so that the outer flame tube 1
Blocked by 5.

An outer cylinder 19 for supporting the glass cylinder 16 is provided below the glass cylinder 16. The handle member 18 is attached to the outer cylinder 19.

[0005] The inner flame cylinder 11, the outer flame cylinder 15, and the outer cylinder 19 are fixed to each other by two cross pins 21 so as to keep concentric states. The cross pins 21 are prevented from falling off by the speed nuts 22.

As shown in FIG. 5, for example, the combustion cylinder 10 includes a core inner cylinder 32 having an upper core member 31 provided thereon and a core outer cylinder 33 provided concentrically outside the core inner cylinder 32. It is used by being placed on top of

[0007] The core top member 31 has a central ventilation hole 311 at the center and a plurality of peripheral ventilation holes 312 around the central ventilation hole 311.

[0008] A space between the core inner cylinder 32 and the core outer cylinder 33 is made of a fibrous material such as glass wool, the lower end of which is immersed in oil in a fuel tank (not shown), and the upper end of which is a combustion cylinder 10. A cylindrical core 34 facing the gap between the inner flame tube 11 and the outer flame tube 15 is provided. The core 34 can be moved up and down by an adjusting means (not shown) to adjust the amount of oil supplied to the gap between the inner flame cylinder 11 and the outer flame cylinder 15 and extinguish a fire. .

When the combustion is performed in the combustion tube 10, the oil in the fuel tank is discharged by the capillary action.
4 and rises along the side wall 12 of the inner flame cylinder 11 and the outer flame cylinder 15.
Between and vaporize. As shown by the solid line arrows in FIG. The air is mixed with the air flowing from the air holes 311 and the peripheral air holes 312 through the air holes 121 of the side wall 12 of the inner flame tube 11. The vaporized oil mixed with air is usually further mixed and burned with air in a gap (hereinafter, referred to as a combustion chamber) between the side wall 12 of the inner flame cylinder 11 and the outer flame cylinder 15, and most of the oil is vaporized. The unburned gas that is burning in the combustion chamber but not in the combustion chamber is the inner flame 11
The unburned gas delivered to the outside through the air holes 131 of the upper air hole plate 13 of the inner flame tube 11 is passed through the inside of the
Then, secondary combustion is performed in the gap between the dish-shaped disk 14 and the outer flame ring 17, and is discharged outside the combustion cylinder 10 as exhaust gas.

[0010]

In the above-mentioned conventional structure, the dish-shaped disk 14 and the upper ventilation hole plate 13 are fixed by spot welding. The flat portion of the upper vent plate 13 is limited, and the strength, the height after fixing, the accuracy of the eccentricity and the like are difficult to achieve, and the secondary combustion varies, and a flame deviated from the upper portion of the combustion tube 10 is generated. Therefore, the generation of soot, the amount of CO gas increases, the combustion performance is not stable, and there are problems such as spot strength during assembly and dimensional control.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a cylinder having a large number of vent holes. An inner flame tube composed of a shape-like side wall and an upper vent plate closing an upper part of the side wall, an outer flame tube composed of concentric side walls provided outside the inner flame tube, and concentrically further outside the outer flame tube A glass cylinder provided in the outer flame ring attached to the upper part of the outer flame cylinder and closing the upper part in the gap between the outer flame cylinder and the glass cylinder,
An outer cylinder provided below the glass cylinder and supporting the glass cylinder, a core for burning oil supplied through a fibrous core provided at a lower portion in a gap between the inner flame cylinder and the outer flame cylinder; In the combustion cylinder of the oil petroleum combustor, the upper vent plate sends the unburned gas to an upper portion of a gap between the inner flame cylinder and the outer flame cylinder for secondary burning of the unburned gas in the inner flame cylinder. And a rectifying section for guiding unburned gas in the inner flame tube to the vent.

According to a second aspect of the present invention, the upper vent plate is formed by bending a flat plate into a cylindrical shape having an upper surface and side surfaces, and the upper surface extends upward from a central portion toward an outer circular portion. The rectifying portion is formed to be inclined at an angle, and the ventilation hole is formed in the upper portion of the side surface.

Further, the invention according to claim 3 is characterized in that a ventilation hole provided in the upper ventilation hole plate is formed at a position higher than an upper end of the outer flame tube.

[0014]

According to the first aspect of the present invention, the combustion cylinder of the up-and-down type petroleum combustor of the present invention has a stable combustion state, soot generation and CO gas reduction. At the same time, management during assembly becomes easy.

According to the second aspect of the present invention, since the vent plate is formed by bending a flat plate, the strength and accuracy of the molded vent plate are improved, and the assembly is easy. become.

According to the third aspect of the present invention, the vent hole provided in the vent plate is formed at a position higher than the upper end of the outer flame tube, so that the flow of unburned gas can be improved. Is no longer obstructed by the side surfaces of the outer flame cylinder, the outflow speed to the outside of the inner flame cylinder increases, and the air easily contacts the air above the combustion cylinder, so that complete combustion is facilitated.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lead lifting device according to the present invention will be described below with reference to the drawings. 1 is a partially cutaway perspective view of a combustion cylinder of the present invention, FIG. 2 is a sectional view of the same combustion cylinder, FIG. 3 is an exploded perspective view of the same combustion cylinder, and in the following embodiments, members similar to those of the above-described conventional example are used. Are denoted by the same reference numerals.

The outline of the combustion cylinder according to the present invention will be described.
This is mainly because the combustion tube 10 is configured as shown in FIGS. 1 to 3, for example, as shown in FIG.
In FIG. 3 to FIG. 3, the inner flame cylinder 11 has a cylindrical side wall 12 in which a large number of air holes 121 are formed, and a lower air hole plate 20 provided inside the side wall 12 near a lower portion of the side wall 12.
And a rectifying plate 4 serving as an upper vent plate closing an upper portion of the side wall 12.
0.

The rectifying plate 40 is provided with an outer peripheral side surface 401 protruding outward in an annular band in the vicinity of the outer periphery, a vent hole 402 is provided in the outer peripheral side surface 401, and the rectifying plate 40 is moved from its central portion. A rectifying portion 403 is formed to guide unburned gas, which is gradually inclined from the inside to the outside of the inner flame tube 11 toward the outer periphery, to the vent hole 402. The lower ventilation hole plate 20 has a central ventilation hole 201 formed at the center and a peripheral ventilation hole 202 formed around the central ventilation hole 201.

On the outside of the inner flame cylinder 11, an outer flame cylinder 15 having a cylindrical side wall with a large number of ventilation holes 151 is formed.
Are provided concentrically with the inner flame tube 11. Outer flame tube 15
Further outside, a glass cylinder 16 is provided concentrically with the inner flame cylinder 11. The upper portion of the gap between the outer flame tube 15 and the glass cylinder 16 is closed by an outer flame ring 17 in which a vent hole 171 attached to the outer flame tube 15 is formed.

An outer cylinder 19 for supporting the glass cylinder 16 is provided below the glass cylinder 16. The handle member 18 is attached to the outer cylinder 19.

The inner cylinder 11, the outer cylinder 15, and the outer cylinder 1
Reference numeral 9 is fixed to each other by two cross pins 21 and 21 so as to maintain a concentric state. Cross pin 2
1 and 21 are prevented from falling off by speed nuts 22.

Next, as shown in FIG. 2, the combustion cylinder 10
It is used by being placed on an upper part of a core inner cylinder 32 provided with a core top member 31 at an upper part and a core outer cylinder 33 provided concentrically outside the core inner cylinder 32. The core top member 31 has a central ventilation hole 311 at the center and a plurality of peripheral ventilation holes 312 around the central ventilation hole 311.

Between the core inner cylinder 32 and the core outer cylinder 33,
It is made of a fibrous material such as glass wool, and its lower end is immersed in petroleum in a fuel tank (not shown), and its upper end has a cylindrical shape facing the gap between the inner flame cylinder 11 and the outer flame cylinder 15 in the combustion cylinder 10. A wick 34 is provided. This core 34
Is moved up and down by an adjusting means (not shown) so that the amount of oil supplied to the gap between the inner flame cylinder 11 and the outer flame cylinder 15 can be adjusted and the fire can be extinguished.

In the above configuration, when the combustion is performed in the combustion tube 10, the oil in the fuel tank rises along the wick 34 due to the capillary phenomenon, and the oil between the side wall 12 of the inner flame tube 11 and the outer flame tube 15 is formed. Evaporate between. The vaporized oil flows into the vent 151 of the outer flame tube 15 from the gap between the outer cylinder 19 and the core outer cylinder 33 as shown by the solid arrow in FIG. The air is mixed with the air flowing from the peripheral ventilation hole 312 through the ventilation hole 121 of the side wall 12 of the inner flame cylinder 11 to become an air-fuel mixture and burn in the combustion chamber between the inner flame cylinder 11 and the outer flame cylinder 15.

However, the partially unburned gas flows into the inner flame tube 11 through the vent hole 121 formed in the side wall 12 of the inner flame tube 11, as indicated by the dashed arrow. The unburned gas rises and the ventilation holes 121 of the inner flame tube 11 and the current plate 40
Flows out from the vent hole 402 of the outer peripheral side surface 401 protruding in an annular shape, and performs secondary combustion. In addition, since the rectifying portion 403 of the rectifying plate 40 is inclined from the central portion toward the outer periphery, the rectifying portion 403 rectifies the unburned gas and guides the unburned gas to the vent hole 402.
The unburned gas flowing out from the inner side of the outer peripheral side 40 protrudes in an annular shape without remaining at the central portion of the current plate 40.
The air is rectified and sent to one vent hole 402 and is subjected to secondary combustion.

[0027]

According to the present invention, since the combustion cylinder of the core-inverted type oil combustor of the present invention has the above-described structure,
There is no need to fix the dish-shaped disk that rectifies unburned gas to the upper ventilation hole plate by spot welding as before, and the accuracy of the rectification part strength, rectification part height, eccentricity, etc. is kept uniform. Secondary combustion of the unburned gas is ensured, the combustion performance is stabilized, and the occurrence of flame or soot that is deviated from the upper part of the combustion cylinder can be prevented.
O gas generation can also be reduced.

According to a second aspect of the present invention, since the upper vent plate is formed by bending a flat plate, the strength and accuracy of the molded vent plate are improved, and parts management and assembling processes are improved. Can be facilitated.

Further, according to the third aspect of the present invention, the vent holes provided in the upper vent plate are formed at positions higher than the upper end of the outer flame tube, so that the flow of unburned gas is reduced. Unburned gas is no longer obstructed, the flow resistance of the unburned gas is reduced, and it efficiently flows out of the inner flame and diffuses, making it easier to contact the air above the combustion cylinder. Can be improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a combustion cylinder of an up-and-down petroleum combustor according to the present invention.

FIG. 2 is a sectional view of the combustion cylinder of FIG.

FIG. 3 is an exploded perspective view of the combustion cylinder of FIG.

FIG. 4 is a partially cutaway perspective view of a combustion cylinder of a conventional vertical core oil combustor.

FIG. 5 is a sectional view of the combustion cylinder of FIG.

FIG. 6 is an exploded perspective view of the combustion cylinder of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Inner flame tube 12 Side wall 15 Outer flame tube 16 Glass cylinder 17 Outer flame ring 19 Outer cylinder 40 Rectifier plate 401 Outer side surface 402 Vent hole 403 Rectifier

Claims (3)

(57) [Claims] 1. An inner flame tube comprising a cylindrical side wall having a large number of air holes formed therein, an upper air hole plate closing an upper portion of the side wall, and a concentric side wall provided outside the inner flame tube. An outer flame tube, a glass cylinder provided concentrically outside the outer flame tube, an outer flame ring attached to an upper portion of the outer flame tube, and closing an upper portion in a gap between the outer flame tube and the glass cylinder, and a glass cylinder And an outer cylinder that supports the glass cylinder, and is provided with an outer cylinder that supports the glass cylinder, and a core vertical type oil that burns oil supplied through a fibrous core that is provided at a lower portion in a gap between the inner flame cylinder and the outer flame cylinder. in combustion cylinder of the combustor, the upper vent plate is outwardly near the outer periphery to the upper vent plate in order to secondary combustion of unburned gas in the flame in the cylinder above
A vent for sending the unburned gas in the outer peripheral side surface protruding in the ring band is provided, characterized in that provided by forming integrally the rectifying portion for guiding the unburned gas in the flame in the cylinder above the vent hole Combustion cylinder for core up-down combustor. 2. The upper ventilation hole plate is bent to form a cylindrical shape having an upper surface and side surfaces, and the upper surface is formed with a rectifying portion inclined upward from a central portion toward an outer circle portion, 2. A combustion cylinder for a cored vertical combustor according to claim 1, wherein said ventilation hole is formed in an upper portion of said side surface. 3. The core up and down according to claim 1, wherein a ventilation hole provided in the upper ventilation hole plate is formed at a position higher than an upper end of the outer flame tube. Combustion cylinder of a combustor.