JPH0220580Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention has a combustion chamber partitioned by a partition plate at a position corresponding to a combustion wick divided into a plurality of parts, and the combustion wick can be burned independently. This invention relates to a combustion tube of a fuel combustion device.

[Prior art and its problems] Liquid fuel combustion that has a combustion tube partitioned by an end plate of a fire pan at a position corresponding to a combustion wick divided into a plurality of parts, and allows each combustion wick to burn independently. The device is known, for example, from Japanese Patent Publication No. 56-34766. The general structure of a combustion device in which a combustion wick divided in this way and a combustion tube are used to increase the variable range of strength and weakness is as shown in FIG. 5, where a divided combustion chamber 31 is partitioned by a partition plate 32, Correspondingly, the combustion wick 33 is also divided, and the partition plate 32 is fixed to the inner flame tube 34 side or the outer flame tube 35 side.
4 to the top of the wick guide tube 36, and the outer flame tube 35 to the fire pan 3.
7 respectively. The outer cylinder 38 and the glass outer cylinder 39 are provided so as to surround the outer flame cylinder 35, and are assembled freely to a certain extent while maintaining a certain distance from each other using cross pins 40. Therefore, in the combustion tube 41 without the partition plate 32, even if the upper part of the wick guide tube 36 or the fire pan 37 is tilted, the inner flame tube 34 and the outer flame tube 37 are connected only by the cross pin 40, so that the inner flame tube 34 and the outer flame tube 37 are connected together at the upper part of the combustion tube. was slightly eccentric, but there was no particular negative effect on combustion efficiency. However, in the combustion tube 41 provided with the partition plate 32, the partition plate 32 comes into contact with the outer flame tube 35 or the inner flame tube 34 at the upper part of the combustion tube 41, resulting in uneven combustion and red flames. .

By the way, if the gap between the lower end of the partition plate 32, the fire pan 37, the upper part of the wick guide tube 36, and the upper end of the wick partition block 42 is too wide, a large amount of air will flow from this gap into the combustion chamber on the burning side during one-sided combustion. It was considered desirable to eliminate this gap because it would cause the mixture to get mixed in, cause combustion to occur, and generate harmful exhaust gases such as bad odors and carbon dioxide gas. However, on the other hand, in such a combustion device, there may be a small step or a slight inclination at the upper positions of the fire pan 37 and the wick guide tube 36 on which the inner flame tube 34 and the outer flame tube 35 are placed. By the way, for the purpose of absorbing these, the inner flame tube 34 and the outer flame tube 3 are installed.
5 is generally assembled with a play by the cross pin 40. Therefore, the partition plate 3 has no gap at all between the lower end of the partition plate 32, the fire pan 37, the upper part of the core guide tube 36, and the upper end of the partition block 42.
2 climbed onto the fire pan 37 and tilted the inner flame tube 34, leaving a technical problem in this respect.

Furthermore, it is said that the combustion state in the vicinity of the partition plate 32 is unstable as a factor that deteriorates the combustion performance during weak combustion. This is clear even when examining exhaust gas distribution. There are many possible reasons why the combustion in the vicinity of the partition plate 32 is unstable, but among them, the large heat loss due to the partition plate 32 seems to be the main cause. In addition, the draft along the partition plate 32 becomes stronger near the partition plate 32, and therefore, the draft along the partition plate 32 becomes stronger.
There is a problem in that the amount of air supplied from the inner flame tube 34 and the outer flame tube 35 near No. 2 increases, resulting in excessive air combustion.

[Purpose of the invention] First, the partition plate is configured so that it does not come into contact with the outer flame tube or the inner flame tube at the top of the combustion tube even if the top of the wick guide tube or the fire pan is tilted. The goal is not to cause fire.

Second, during weak combustion (one-sided combustion), it prevents vapor from flowing into the non-combustion chamber, reduces odor, improves exhaust gas performance, and prevents the partition plate from riding on the fire pan. .

Thirdly, the weak combustion performance is improved by reducing heat loss due to the partition plates that divide the combustion chamber, and by preventing excess air from forming near the partition plates by using the mounting portions of the partition plates.

[Technical means to be solved by the invention] This invention has a combustion chamber partitioned by a partition plate at a position corresponding to a combustion wick divided into a plurality of parts,
In the combustion tube of a liquid fuel combustion device in which the combustion wick can be burned independently, the gap between the outer flame tube and the partition plate or the gap between the inner flame tube and the partition plate is made wider as it goes upwards of the combustion tube. be.

[Embodiment of the invention] As shown in FIGS. 1 and 2, a liquid fuel combustion device has a fire pan 1 and a pair of arc-shaped cores 3, 3a divided by a pair of left and right partition blocks 2, 2a. A double-tube combustion tube 5 that is removably placed on the guide tube 4
has a pair of hollow semi-cylindrical combustion chambers 6 and 7 that divide the cylinder into two, and each of these combustion chambers 6 and 7 has an inner flame cylinder 9 having a large number of flame holes 8 and a large number of flame holes 10. a partition plate 12 that divides the area surrounded by the inner flame tube 9 and the outer flame tube 11 into two;
13.

Further, a first rectifying plate 15 having a ventilation hole 14 is attached to the upper end so as to cover the inner flame cylinder 9, and a second rectifying plate 15a that expands upward is attached to the upper part of the first rectifying plate 15. Further, a third rectifying plate 16 having a ventilation hole 16a is provided so as to close the inner lower part of the inner flame cylinder 9.

On the other hand, an outer cylinder 17 is provided at the outer lower part of the outer flame cylinder 11, a glass outer cylinder 18 is provided above the outer cylinder 17, and a presser plate connects the upper end of the glass outer cylinder 18 to the upper end of the outer flame cylinder 11. 19, and the inner flame tube 9, outer flame tube 11, and outer tube 17 are integrally connected by a cross pin 20.

Furthermore, the partition plates 12 and 13 are fixed to the inner flame tube 9 side, and form a gap a between them and the outer flame tube 11. This gap a is formed to become wider as it goes upward, and the shape of the partition plates 12 and 13 is generally reduced to about 40 mm at the lower part 21, and Above 21, the gap a is formed in a tapered shape 22 so as to widen upward. This is the combustion chamber 6,
This is to prevent the flame from shifting when only one side of the tube is burned.

As shown in FIG. 3, the lower ends of the partition plates 12 and 13 are arranged such that the lower ends 23 of the partition plates 12 and 13 are located approximately 1 mm above the lower ends 24 of the inner flame tube 9 and the lower ends 25 of the lower part of the outer flame tube 11. It will be set up so that That is, the lower ends 23 of the partition plates 12 and 13 are fixed to the inner flame tube 9 with a gap b of about 1 mm between the fire pan 1 and the wick partition blocks 2 and 2a.

The attachment of the inner flame cylinder 9 of the partition plates 12 and 13 is as follows:
As shown in FIG. 4, a flange 26 formed by bending the partition plate 12 is fixed by spot welding or the like to the side of the combustion chamber 6 on one side where weak combustion is performed by burning only the wick 3 on one side. With one side combustion chamber 6
An appropriate number of flame holes 8 near the partition plates 12 and 13 of the inner flame tube 9 forming the flame tube are closed to regulate air supply.

Next, the operation will be explained.

When the combustion tube 5 is placed on the fire pan 1 and the guide tube 4,
The lower end 24 of the inner flame tube 9 is placed on the upper part of the guide tube 4, while the lower end 25 of the outer flame tube 11 is placed on the fire pan 1.

At this time, even if the combustion tube 5 becomes eccentric due to a step or inclination of the fire pan 1 and the guide tube 4, or due to dirt adhering to the fire pan 1, the partition plate 1
A gap a is maintained between 2 and 13 and the outer flame tube 11,
The inner flame tube 9 and the outer flame tube 11 are independently connected to the guide tube 4,
It is placed on the fire pan 1. Therefore, the inclination of the outer flame tube 11 prevents the inner flame tube 9 from floating up by the lower end guide tube 4, and the inclination of the inner flame tube 9 also causes the lower end of the outer flame tube 11 to rise above the fire pan 1. It is possible to prevent uneven combustion and the occurrence of red flames. In the mounted state of the combustion tube 5,
The lower end 23 of the partition plates 12 and 13 is the lower end 2 of the inner flame cylinder 9.
4. By being located about 1 mm above the lower end 25 of the outer flame tube 11, there is no possibility that the partition plates 12, 13 will ride on the fire pan 1 and accidentally tilt the combustion tube 5. Furthermore, during one-sided combustion using the one-sided wick 3 and one-sided combustion chamber 6, a gap b is formed between the partition plates 12, 13 and the wick partition blocks 2, 2a.
Air flows from the non-combustion side combustion chamber 7 to the combustion side combustion chamber 6 through the gap b. The fluid velocity of this air is high because the passage area is small because the gap b is about 1 mm. Therefore, due to the high-speed inflow air in this gap b, liquid combustion vapor generated in the combustion side combustion tube 6 does not flow out to the non-combustion side combustion tube 7, and the total amount of vaporized gas generated in the combustion side wick 3 is reduced. can be combusted in the combustion side combustion chamber 6, and odor generation can be eliminated.

The air flowing in from the gap b tends to cause an excess of air in the vicinity of the partition plates 12 and 13 of the combustion side combustion chamber 6, which tends to cause unstable heat loss during combustion. Boards 12, 13
By blocking the nearby flame holes 8 with the mounting flanges 26 of the partition plates 12, 13, excess air can be suppressed and heat loss can be reduced.

Therefore, since the flanges 26 of the partition plates 12 and 13 close the flame holes 8 of the inner flame tube 9 formed by the combustion chamber 6 for one-sided combustion, the amount of supplied air can be adjusted, and the flame holes of the inner flame tube can be adjusted. Compared to the above adjustment method by changing the arrangement, the flange 26, which is easier to implement and is fixed to the inner flame cylinder 9, is provided on the weak combustion side, that is, on the combustion chamber 6 side during combustion by the one-sided wick 3. As a result, heat loss can be reduced, and there is no risk of disturbing the combustion state compared to a method in which a part of the partition plate protrudes into the combustion chamber for heat recovery.

In the above embodiment, the partition plates 12 and 13 were attached to the inner flame tube 9 side, but the partition plates 12 and 13 were attached to the inner flame cylinder 9 side.
13 on the outer flame tube 11 side, and its flange 26
may be provided on one side of the combustion chamber 6 so as to close the flame hole 10.

[Effects of the invention] This invention is a combustion tube for a liquid fuel combustion device that has a combustion chamber partitioned by a partition plate at a position corresponding to a combustion wick divided into a plurality of parts, and allows the combustion wick to be burned independently. By forming the gap between the outer flame tube and the partition plate or the gap between the inner flame tube and the partition plate to widen toward the top of the combustion tube, the outer flame tube is placed while forming combustion in the combustion tube. When the inner and outer flame tubes cannot be placed in an upright position due to an inclination or step on the upper part of the fire pan or guide tube, or there is dirt on the fire pan, etc. In other words, when the inner and outer flame tubes are eccentric. However, the risk of the entire combustion tube tilting can be eliminated, and a more stable combustion state can be obtained compared to conventional combustion tubes.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view of this device, Figure 2 is a cross-sectional view of the same, Figure 3 is a front view of the main parts, and Figure 3A is a front view of the main parts when combustion is performed on both sides. FIG. 3B is a front view of the main part during one-sided combustion, FIG. 4 is a perspective view showing the installation of the partition plate, and FIG. 5 is a sectional view of the conventional one. 3, 3a... Core, 5... Combustion tube, 6, 7... Combustion chamber, 9... Inner flame tube, 10... Flame hole, 11... Outer flame tube, 12, 13... Partition plate, a , b... Gap.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A liquid fuel combustion device that has a combustion chamber partitioned by a partition plate at a position corresponding to a combustion wick divided into a plurality of parts, and is capable of burning the combustion wick independently. 1. A combustion tube for a liquid fuel combustion device, characterized in that, in the combustion tube, the gap between the outer flame tube and the partition plate or the gap between the inner flame tube and the partition plate is formed to become wider toward the top of the combustion tube. (2) The liquid fuel combustion according to claim 1 of the utility model registration claim, characterized in that the lower end of the partition plate is located above the lower end of the inner or outer flame tube to which the partition plate is fixed. The combustion tube of the device.