JPS6038515A - Burner - Google Patents

Abstract

PURPOSE:To improve combustion properties by improving a mixture of fuel and air and to heat a red heat body evenly at a red heat, by a method wherein a circumferential wall of an inner burning cylinder is expanded gradually upward and a circumferential wall of the red heat body is contracted upward gradually. CONSTITUTION:A red heat body 7 made of a material such as a wire net possesses a shape to be obtained by contracting gradually a circumferential wall of a combustion cylinder 11 upward of the same 11 and a large number of holes 7a. An inner burning cylinder 2 keeps a shape to be obtained by expanding gradually a circumferential wall of the combustion cylinder 11 upward of the same, and a plurality of air holes 2a and ventilating holes 2b are provided on a side wall and the top respectively. As the inner burning cylinder 2 and the red heat body 7 are titled upward of the combustion cylinder 11 and toward a combustion chamber 4 side, a flame kept burning in an air hole of the lower part heats in order the flame of the upper part and mixing efficiency is improved by flowing fresh air gradually into the central part of the combustion chamber 4. On the contrary, when a main combustion gas duct is closed by making a resisting plate 16 descent, the mixing efficiency is improved similary though evaporation of liquid fuel is controlled by reducing a drafting quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used for home heating and the like.

'L's There are problems with the configuration of the conventional example.

Conventionally, in this type of combustion device, the incandescent body and the inner flame tube were assembled almost vertically within the combustion tube. For this reason, it had the following drawbacks.

(1) The air flowing through the air holes of the inner flame cylinder and the holes of the incandescent body rises immediately after entering, so the air flow does not reach the center of the combustion chamber, and the mixture of fuel and air in the center is reduced. It was very difficult to use, as it produced yellow flame and odor inside the combustion chamber.

2) At the top of the red-hot body, air flows in through many holes,
The air-fuel mixture becomes lean, and the flame holding in the holes at the top of the red-hot body becomes unstable. In particular, when the combustion acid is large, the airflow speed becomes faster and the flames in the holes are easily blown away, causing unevenness on the red-hot body, a large amount of carbon monoxide is generated, and the appearance is also affected. There were intergranules.

OBJECT OF THE INVENTION The present invention solves the problems of the conventional katana/karu.It is an object of the present invention to solve the problems of the conventional katana/karu.The present invention is to improve the combustion characteristics by stabilizing the flame holding of the upper flame of the katana/katana combustion chamber. It is something to do.

Structure of the Invention The present invention is such that both the incandescent body and the inner flame tube gradually contract in the entire upward direction of the circumferential wall by at least 10,000 degrees, while the incandescent body gradually contracts and the inner flame tube expands.

Description of examples An embodiment of the invention will be described below based on the drawings.

In the figure, 1 is a lamp wick, and its second part (c) is exposed during combustion to a combustion chamber 4 formed by a flame tube 2, an outer flame tube 3, a wick guide tube 5, and a core outer tube 6. A 1ml gap is provided in the tube that moves northward. A plurality of air holes 6a are provided in the twisted wick outer cylinder 6 so as to face the lamp wick 1. Reference numeral 7 denotes a red-hot body made of a material such as a wire mesh, which has a circumferential wall gradually contracted upward from the combustion tube 11, and has a large number of holes 7ak.

The inner flame fi';
12a, a plurality of ventilation holes 2bi are provided on the top plate.

External flame [h'ii 3's 1111 wall has multiple air holes 3
a'ji is established. 8 is an outer cylinder, and a transmission tube 9 made of heat-resistant glass or the like is installed on top of it.
Then, the inner flame tube 2, the outer flame tube 3, and the outer tube 8 are assembled on the bl)i1 using the cross pin 10 to form the combustion tube 11. A flame expansion plate 13 is installed above the inner flame cylinder 2 through a passage 12. A metal plate made of IA material such as a wire mesh is installed on the upper part of this flame expansion plate 13.
A two-part incandescent body 14 gold is attached, and the upper incandescent body 14 and the upper part of the transmitting tube 9 are connected via a partition plate 15. The partition plate 15 has a main combustion gas passage 15a that is wide open in the center, and a large number of auxiliary combustion gas passages around the main combustion gas passage 15a.
A gas passage IH5b is provided. Main combustion) f-s passage 1
A resistance plate 16 with a thick opening area is provided above the resistance plate 5a, and a shaft 17 opens and closes the main combustion power passage 15a. A is a secondary flame.

When the lamp wick 1 is ignited in the above configuration, combustion starts completely, and the high-temperature combustion gas burns. °
By passing through the L waste passage 15b', a thermal draft is generated and the air necessary for combustion flows into the inner flame tube 2 and the outer flame tube 3, respectively' and 'ν.
From pores 2a, 3 a 2 L and pores 7a of incandescent body 7, etc.
4i, the wick 1 is supplied with the air flow from the air holes 68 of the wick outer tube 6 and the heat of the flame held in each air hole, which completely evaporates the liquid fuel and burns it. Make it last. The figure shows when the resistance plate 16 is raised to increase the combustion @, and the upper combustion °L
The gas passage 15a is opened wide, the draft amount increases, a large amount of air flows into the combustion tube 11, the amount of air near the wick 1 increases, and the evaporation of the liquid fuel is promoted. At this time, since the inner flame tube 2 and the incandescent body 7 are tilted above the combustion tube 11 and toward the combustion chamber 4, the flame held in the lower air hole sequentially heats the upper flame, resulting in a new flame. Air gradually flows into the central part of the combustion chamber 4, improving the mixing efficiency. On the contrary, resistance plate 16
If the main combustion gas passage is lowered and the main combustion gas passage is blocked, the draft pipe will be reduced and the evaporation of liquid fuel will be suppressed, but in the same way,
Mixing efficiency is improved.

Effect of the invention As described above, according to the present invention, the following effects are widespread.

(1) Since the inner flame tube gradually expands all the way up the peripheral wall, the air flowing in from each air hole of the inner flame tube approaches the center of the combustion chamber, and the fuel and air mix well, improving combustion characteristics. .

The high-temperature combustion gas of the flame in the combustion chamber tends to collide with the peripheral wall of the inner flame tube, causing inner flame 1! Since the temperature of Qi is raised, the flame in the inner flame tube is stabilized, and flame blow-off can be prevented.

? ) Since the circumference of the red-hot body gradually decreased upward,
The air flowing in through the holes in the incandescent body easily collides with the wide flame gas, and the flame is stably held in the holes, allowing the incandescent body to glow evenly.

(3) Since the incandescent body is extended into the combustion chamber, the incandescent body is heated by the high dR1 combustion gas, and when the combustion meter is small, the temperature of the incandescent body is measured even if no flame is formed at the top of the body. ” It can prevent unevenness in two parts.

4) No. 42 of the twisted bar L, which consists of an inner flame cylinder and a red-hot body, is
1), the high-temperature combustion gas is trapped in the combustion chamber 4, and the temperature inside the combustion chamber t is reduced to 2 parts, resulting in a good s+.
: Jc type I-5 11 can be used to improve combustion characteristics over the entire surface.

(5) Consisting of an inner flame tube and a red-hot body - The combustion chamber is made narrower, so the combustion gas flows at a ton faster in that narrow area, promoting mixing and improving combustion characteristics. Second, the flow velocity of the combustion gas suddenly drops above the narrow part, and the combustion gas diffuses into the surrounding area to form a secondary flame, so the flame stability of the secondary flame becomes stable and it blows away? It can be prevented.

[Brief explanation of drawings]

The figure is a sectional view of a combustion device showing an embodiment of the present invention. 2... Inner flame tube, 2a... Air hole of inner flame tube,
4°°. ... Combustion chamber, 7... Red-hot body, 7a...
Hole in red-hot body, A...Secondary flame.

Claims (1)

[Claims] (1) The inner and outer flame tubes each have a plurality of air holes, and the combustion tube is concentrically arranged with the outer tube, and an incandescent body is attached to the upper part of the outer flame tube. 11jJ A combustion device in which at least 10,000 of the inner flame cylinders are arranged so that the upper part of the peripheral wall of the inner flame cylinder is larger than the lower part, and the upper part of the peripheral wall of the incandescent body is smaller than the lower part of the peripheral wall. ? ) The inner flame tube gradually expands all the way up its peripheral wall,
The combustion device according to claim 1, wherein the circumferential wall of the incandescent body gradually contracts upward.