JPS6038516A - Burner - Google Patents

Abstract

PURPOSE:To make a flame keep burning stably on the upper part of an inner combustion cylinder, blow-off of a combustion flame is prevented even if an oxygen density is lowered and generation of carbon monoxide is prevented. CONSTITUTION:A plurality of air holes 2a and a plurality of ventilating holes 2b are provided respectively on a side wall and the top of an inner combustion cylinder 2. An arrangement of air holes 2c whose distances among the air holes are shortest among a plurality of air holes 2a on a side wall of the inner combustion cylinder 2 are provided in a crowded state on the upper part of the inner combustion cylinder 2. As for the air holes 2c, opening diameters of the same are made larger than those provided below the air holes 2c among the air holes 2a on the side wall of the inner combustion cylinder 2. As the crowded air holes 2c on the inner combustion cylinder 2 are apt to keep a combustion flame burning, the combustion flame is prevented from blowing off and combustion exhaust gas grown worse through the flame blown off from each of the air holes holes on the inside of the combustion chamber 4 is made to burn by heat of the crowded combustion flame.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to fuel used for household heating, etc. Conventionally, in wick-type liquid fuel combustion devices used in kerosene stoves, etc., the oxygen concentration in the room in which it is used is When the temperature decreases (especially when ventilation is not provided), the combustion flame may blow out, the amount of combustion will decrease, and a large amount of carbon oxide will be released into the room, creating a very dangerous situation. .

OBJECT OF THE INVENTION The present invention solves these conventional problems by stably holding the flame above the inner flame cylinder, preventing the combustion flame from blowing off even when the oxygen concentration/l decreases, and improving the combustion yyc. This prevents the generation of carbon monoxide by burning the harmful exhaust gas that rises inside the room.

Structure of the Invention According to the present invention, a plurality of air holes are provided above the side wall of the inner flame tube, and the distance between the air holes is smaller than that of the other air holes in the side wall, and the air holes are closely spaced.

Description of examples An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a lamp wick whose upper end is exposed during combustion to a combustion chamber 4 consisting of an inner flame tube 2 and an outer flame tube 3, and a gap formed by a wick guide tube 5 and an outer wick tube 6. It is designed to move up and down. A plurality of air holes 6a are provided in the wick outer cylinder 6 so as to face the lamp wick 1. The inner flame cylinder 2 is provided with a plurality of air holes 2a on the side wall and a plurality of ventilation holes 2b on the large plate.

On one side of the inner flame tube 2, there are air holes 2 arranged in such a way that the distance between the air holes is the shortest among the plurality of air holes 2a on the side wall of the inner flame tube 2.
C are arranged densely. Moreover, the opening diameter of this air hole 2c is larger than that of the air holes 2a in the side wall of the inner flame tube 2 provided below this air hole 2c. Further, a rectifying plate 7 having a large opening lower a is provided close to one side of the air hole 2c and inside the inner flame tube 2,
Air can easily flow into the air hole 2c. The outer flame cylinder 3 has a plurality of air holes 3a in its side wall, and a red-hot body 8 made of a wire mesh or the like is provided above the air holes 3a. The red-hot body 8 has many holes 8
It has a. Reference numeral 9 denotes an outer cylinder, and a transmitting cylinder 10 made of a 1lIit thermal glass cylinder is provided on the upper part of the outer cylinder. These inner flame tube 2, outer flame tube 3, and outer tube 8 are concentrically assembled using clonupin 11 to form a combustion tube 12. Inner flame tube 2'
A flame expansion plate 14 is provided on one side through a passage 13, and an upper incandescent body 15 made of a material such as a wire mesh is attached to the second part of the flame expansion plate 14.
has been established. The upper incandescent body 15 and the upper part of the transmitting tube 10 are joined via a finishing J plate 16. The partition plate 16 is provided with a plurality of exhaust gas passages 16a. Reference numeral 17 denotes a two-flame link provided at the upper end of the incandescent body 8, and two flames F are formed in the gap formed between the two-flame ring 17 and the end of the flame expansion plate 14.

In the above configuration, when the lamp wick 1 is ignited, combustion starts,
When the high temperature combustion gas from combustion passes through the combustion chamber 4 and the exhaust gas passage 16a of the partition plate 16, a thermal draft is generated and the air necessary for combustion flows through the inner flame C542, the air holes 2a, 3a of the outer flame tube 3, and The liquid fuel flows into the holes 8a, etc. of the incandescent body 8, and the lamp wick is supplied with the air flow from the wick outer tube 60'/, the air hole 6a, etc., and the heat of the combustion flame held in each air hole. evaporates and sustains combustion.

The figure is a sectional view showing a normal combustion state with the lamp wick 1 raised. Here, as the oxygen concentration decreases, the flame that was held in each air hole slows down and burns! ,
As the kJ temperature decreases, flame stability becomes unstable. but,
Since the thermal draft has not yet significantly decreased, the amount of air (however, low oxygen concentration air) has not decreased to the extent that the amount of combustion has decreased, so the combustion flame will begin to blow away. At this time, the combustion flame tends to be flame-stabilized in the densely packed air holes 2c of the inner flame cylinder 2, so the combustion flame is prevented from being blown away, and the flames blown away from each air hole in the combustion chamber 4 are aggravated. To combust the combustion exhaust gas with the heat of a dense combustion flame, prevent a large amount of carbon monoxide from being generated when the oxygen concentration is low (about 14 to 15%), and maintain a good combustion state.

Effect of the invention As described above, according to the present invention, the following effects can be obtained.

(1) A plurality of air holes are provided in the upper part of the side wall of the inner flame tube, and the distance between each air hole is smaller than that of other air holes, and they are closely spaced, so when a combustion flame is formed in these air holes, the surrounding air Due to the interference of the two parts of the temperature, the combustion flame becomes more stable.
Even in low oxygen concentrations (14 to 15%), the combustion flame does not blow out and the combustion characteristics do not deteriorate.

(2) The air holes are arranged closer together than other air holes, so a large amount of air can easily flow into that area in a layered manner, and even if the oxygen concentration decreases, the absolute amount of oxygen is large, so the exhaust gas It is possible to burn the unburned remains and prevent deterioration of combustion characteristics.

(3) Since the opening diameter of the air holes that are tightly packed is larger than the diameter of the air holes that are provided below this air hole, there is a A large amount of air flows into the combustion chamber, and combustion flames tend to form stably in the densely packed air holes. Even at low oxygen concentrations, combustion flames remain in these areas within the combustion chamber, causing deterioration of combustion characteristics. It can be prevented.

(4) Since the combustion flame is stably held in the densely packed air holes, the secondary flame above the combustion chamber is also attracted by the combustion flame,
Even in low oxygen concentrations, it is possible to prevent the secondary flame from blowing away, thereby preventing deterioration of combustion characteristics.

(5) Since the combustion flame is stably held in the densely packed air holes, even if the flame of the incandescent body on the opposite side is blown away, the heat of this combustion flame will prevent the temperature of the upper part of the incandescent body from decreasing. The upper part of the red-hot body acts as a flame holder, preventing the secondary flame from blowing away and preventing deterioration of combustion characteristics.

(6) The current plate changes the flow of air inside the inner flame cylinder, allowing a large amount of air to gather in the densely packed air holes even when the oxygen concentration drops, so combustion occurs in the densely packed air holes. The flame is stably held, preventing combustion flames, secondary flames, etc. from being blown away, and deterioration of combustion characteristics can be prevented.

[Brief explanation of the drawing]

The figure is a sectional view of a combustion device showing an embodiment of the present invention. 2... Inner flame tube, 2a... Air hole on the inner flame tube side wall, 2C.
Dense air holes at the top of the inner flame tube, 7... rectifier plate, 7a
...Opening, 8...Red-hot body.

Claims (1)

[Scope of Claims] (1) An inner flame tube, an outer flame tube, and an outer tube having a plurality of air holes are arranged concentrically as a combustion tube, and a plurality of inner flame tubes are arranged above the side wall of the inner flame tube. A combustion device in which the air holes in the side wall are closely spaced with a smaller distance between them than other air holes in the side wall. (Hori) Air holes with small distance between air holes and densely packed air holes 1
2. The combustion device according to claim 1, wherein the zero diameter is larger than the position of the air hole and the opening diameter of the air hole provided below. (3) The combustion device according to claim 1, wherein a rectifier plate having an opening is provided in the inner flame cylinder at a position close to the upper side of the air holes which are arranged close to each other with a small distance between the air holes.