JPS58123003A - Liquid fuel conbustor - Google Patents

Abstract

PURPOSE:To prevent the lowering and unevenness of the temperature of a red heat cylinder when the amount of combustion is lowered by providing an upper flame cylinder above the red heat cylinder and also providing plural air holes in the face of an inner flame cylinder on the side wall of the upper flame cylinder in a liquid fuel combustor with a wick. CONSTITUTION:A combustion cylinder 1 is made up of an outer cylinder 2 having a permeation cylinder 3 on its upper part. A red heat cylinder 4 has an outer flame cylinder 5 with an air hole 5a at its lower part and an upper flame cylinder 6 with an air hole 6a at its upper part. The upper part of the upper flame cylinder 6 is connected to the upper part of the permeation cylinder 3 through a link 7. Also, an inner flame cylinder 8 with an air hole 8a is provided in the insides of the red heat cylinder 4, the outer flame cylinder 5, and the upper flame cylinder 6. and a combustion chamber 9 is made up of the outer flame cylinder 5 and the inner flame cylinder 8. The inner flame cylinder 8 is supported by a wick guide cylinder 13, the outer flame cylinder 5 is supported by a wick outer cylinder 14, and the wick outer cylinder 14 is set in the face of the main wick 15. Thus, the lowering of the temperature of the red heat cylinder 4 can be prevented by the heat retention of the upper flame cylinder 6 and the flame formation of the air hole 6a when combustion amount is lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion tube for a liquid fuel combustion device having a wick.

In a conventional liquid fuel combustion device of this type, as shown in Fig. 3, the glowing cylinder A is provided facing the inner flame cylinder B up to the upper part, and the upper part of the glowing cylinder A is connected to the upper part of the transmission cylinder through a ring C. It is connected with. Also, a large number of flames 2 are formed on the side wall of the inner flame cylinder B, and the combustion heat of the flames heats the red-hot cylinder. In this case, ■ When the wick is lowered to reduce the combustion amount, or when the combustion amount decreases due to tar accumulation in the wick due to the use of fuel containing high boiling point components, the flame E of the inner flame tube B will be lower than that of the inner flame tube B. Since it is mainly formed downward, the temperature of the upper part of the incandescent tube facing the flame E decreases, and the upper part of the incandescent tube becomes darker than the lower part.■ The incandescent tube is made of wire mesh, etc. Also, in order to accelerate the rise of the red heat and increase the temperature of the red heat, the heat capacity was made small, resulting in a large number of air holes.As a result, there was a large amount of air passing through, and flames were formed in the red heat tube itself. There is no heat (especially at the top), and as the flame I won't be able to do it.

■ If the red-hot tube cannot achieve the red-hot temperature at the rated combustion,
Since the radiant heat inside the combustion chamber also decreases, combustion deteriorates and the amount of carbon monoxide generated increases.

It had the following drawback.

The present invention eliminates these conventional drawbacks, and is effective when lowering the wick of a liquid fuel combustion device to reduce the amount of combustion, and when tar accumulates on the wick when using fuel containing high boiling point components. The purpose is to prevent the red-hot temperature of the red-hot tube from decreasing and unevenness due to the decrease in the amount of combustion, and to improve the combustion characteristics.

In order to achieve this object, the present invention provides an upper flame tube on the upper part of the incandescent tube, and a plurality of air holes are provided in the side wall of the upper flame tube, facing the inner flame tube.

With this configuration, even if the flame at the top of the inner flame tube descends due to a decrease in the combustion amount when the wick is lowered to reduce the combustion amount or when tar accumulates on the wick due to fuel containing high boiling point components, The upper flame cylinder has a larger heat capacity than the red-hot cylinder, and the flame can be easily held. - Air holes were provided to prevent the red-hot temperature at the top of the red-hot cylinder from decreasing and to prevent unevenness. In addition, the combustion characteristics were also improved because a decrease in the red-hot temperature of the red-hot cylinder could be prevented by forming a flame in the upper flame cylinder.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows the liquid fuel combustion apparatus of this embodiment.

1 is a combustion tube, 2 is a transmission tube 3 made of heat-resistant glass, etc. on the upper part.
It is an outer cylinder with a 4 is a red-hot tube made of wire mesh or the like, and an outer flame tube 6 having a plurality of air holes 5a is provided at the bottom.
A dobe flame cylinder 6 having a plurality of air holes 6a is provided in the upper part. Some of the air holes 6a are arranged in a denser arrangement than others.

The upper part of the upper flame barrel 6 is connected to the upper part of the transmission barrel 3 via a ring 7. Red-hot cylinder 4. Outer flame tube 5. An inner flame tube 8 having a plurality of air holes 8a is provided inside the upper flame tube 6,
Outer flame tube 5. A combustion chamber 9 is about to be formed by the inner flame cylinder 8. The inner flame cylinder 8 is provided with a top plate 1o having a plurality of ventilation holes 10a, and a flame expansion plate 11 is provided on the top of the top plate 10. Furthermore, a partition plate 12 having a plurality of ventilation holes 12a is provided within the inner flame tube 8. The inner flame tube 8 is supported by a core guide tube 13, and the outer flame tube 6 is supported by a core outer tube 14.

The core outer cylinder 14 is provided facing the main body 16 and has a plurality of air holes 14a. 16 is a fire wick, and 17 is a wick holding metal fitting. FIG. 2 is an enlarged view of the main part of the embodiment, in which the air hole 6a of the upper flame tube 6 is provided facing the upper part of the inner flame tube 8, and a flame 18 is formed in the air hole 6a. In addition, a flame 19 is formed in the air hole 8a of the inner flame tube 8. Since the upper flame tube 6 is provided above the red-hot tube 4, the wick of the liquid fuel combustion device is lowered to reduce the amount of combustion. Flame 1 in the inner flame tube 8 due to a decrease in combustion amount when the fuel simmers or when tar accumulates in the wick due to the use of fuel containing high boiling point components.
9, the heat capacity of the upper flame tube 6 is larger than that of the incandescent tube 4, and the heat capacity is maintained and the air hole 6a of the upper flame tube 6 is maintained.
By forming flame 1B at
It also ensures radiant heat within the combustion chamber, improving combustion characteristics.

As described above, according to the upper flame tube of the present invention, (1) Since the upper part of the red-hot tube is changed to an upper flame tube with a larger heat capacity than the red-hot tube, the difference in red-hot temperature between the rated combustion amount and when the combustion amount decreases. This reduced the red glow temperature at the top of the glow tube and prevented it from becoming uneven.

■ The flame in the air hole at the top of the inner flame tube is less likely to form when the combustion rate decreases, and since the part of the glow tube that faces the flame has been replaced with the upper flame tube, the glow tube itself does not have a red-hot temperature. There are no areas where the drop is severe, and a good red heat distribution can be obtained.

■ The temperature drop area at the top of the incandescent cylinder and the temperature drop area due to unevenness are eliminated, and radiant heat is evenly supplied into the combustion chamber, preventing deterioration of combustion characteristics (-increase in carbon oxide) even when the combustion amount decreases.

■ In order to reduce the heat capacity of the incandescent tube, the air holes are large and numerous, so the amount of air is too large and a flame does not form. However, the upper flame tube does not have a large heat capacity, so the air holes are large and large. Since the flames are arranged closely and an appropriate amount of air is obtained, it is possible to obtain stable flame holding by mutual heating of the flames, and prevent a drop in temperature when the combustion amount of the upper flame tube decreases. Since the air holes in the upper flame tube are opposed to the inner flame tube, the flame formed in the upper flame tube heats the inner flame tube, preventing a drop in the temperature of the inner flame tube and deteriorating the combustion characteristics when the combustion rate decreases (-oxidation). (increase in carbon).

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the liquid fuel combustion apparatus of the present invention, FIG. 2 is an enlarged view of the main part of the embodiment, and FIG. 3 is an enlarged view of a conventional example. 4...Incandescent cylinder, 6...Outer flame cylinder, 6...
...Upper flame tube, 8...Inner flame tube, Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (1)

[Claims] 1. It has a porous wick that vaporizes and burns liquid fuel, and the combustion tube is composed of an inner flame tube, an outer flame tube, and an outer tube, and
An incandescent tube is provided at the top of the outer flame tube, a transmitting tube is provided at the top of the outer tube, and an upper flame tube having a plurality of air holes connected to the upper part of the transmitting tube is provided at the top of the incandescent tube. Liquid fuel combustion equipment. 2. The liquid fuel combustion device according to claim 1, wherein a plurality of air holes in the upper flame tube are provided opposite to the inner flame tube. 3. Tighten some of the multiple air holes in the upper flame tube. A liquid fuel combustion device 6 according to claims 1 and 2 arranged as follows.