JPS63318405A - Combustion device - Google Patents

Abstract

PURPOSE:To prevent noise and/or the fluctuation of flame upon switching from low combustion into high combustion or being hit by air, by a method wherein a part, opposing to the outer tube chocking section of the red-hot part of an outer flame tube, is provided with no hole while the upper end of a combustion control tube is extended to the lower end of through holes at the lowest stage of the red-hot part of the outer flame tube. CONSTITUTION:The red-hot part 16 of an outer flame tube 7, opposing to the chocked section 15 of an outer tube 9, is no-hole section 34. A combustion control tube 24 is extended to the lower end of the through holes 17 of the lowest stage, which are provided on the red-hot part 16 at the upper end thereof. According to this constitution, distances between the air holes 25 of the outer flame tube as well as the communicating holes 27 of the combustion control tube 24 and the lowest stage of the through holes 17 are elongated, therefore, the mutual attraction between flames, formed on both of above-described holes, may be eliminated. A flow passage is formed between the upper end of the combustion control tube 24 and the no-hole part 34 of the red-hot part 16 of the outer flame tube whereby the ascending speed of unburnt gas from an air chamber 26 may be weakened and the amount of air, entering from the air holes 25 of the outer flame tube into the air chamber 26, may be restricted due to the flow resistance of the flow passage.

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.

2. Description of the Related Art Conventionally, as this type of combustion device, there is a wick-type combustion device used in kerosene stoves and the like. This wick-type combustion device does not require a 100V power source like oil fan heaters, etc., which means it does not require a power cord, so it has the advantage of being easily portable, but if you reduce the amount of combustion a little, it will reduce CO2.
There was a problem that a large amount of combustion started to occur and the range for adjusting the combustion amount was narrow.

As a solution to this problem, the applicant has already proposed a combustion device as shown in FIG. 2, which allows a wide combustion amount adjustment range. This combustion device will be explained below.
In FIG. 2, reference numeral 1 denotes a lamp wick, which is set between an inner wick tube 2 and an outer wick tube 3 so as to be vertically movable. The upper ends of the inner core cylinder 2 and the outer core cylinder 3 form an inner fire pan 4 and an outer fire pan 5, respectively.
An inner flame tube 6 and an outer flame tube 7 are placed. The tip of the wick 1 is connected to the combustion chamber 8 formed between the inner flame tube 6 and the outer flame tube 7 during combustion.
The combustion vaporization takes place here. Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, outer flame cylinder 7, and outer cylinder 9 are sequentially arranged approximately concentrically from the inside and are integrated by a fixing pin 10.

Reference numeral 11 indicates a large number of air holes provided in the inner flame tube 6 and the outer flame tube 7. Reference numeral 12 denotes an inner flame tube top plate that closes the upper end opening of the inner flame tube 6, and has a ventilation hole 13 communicating upward from the inside of the inner flame tube 6. 14 is a flame expansion plate placed on the top plate 12 of the inner flame tube. A constriction part 15 is formed at the upper end of the outer cylinder 9, and a glowing part 16 is formed in the outer flame cylinder 7 above the constriction part 15, and a through hole 17 with a large opening is provided. 1
8 is a transparent tube made of a transparent material such as glass, and an outer flame tube 9
is placed on top.

A top frame 19 is placed on the upper end of the red-hot part 16 so as to cover the upper end of the air passage 20 between the red-hot part 16 and the transmission cylinder 18, and fixes the transmission cylinder 18. 21 is the inner flame tube 6
A flow control tube installed inward, extending upward from near the position facing the tip of the lamp wick 1 to near the tip of the inner flame tube 6, and shielding the control area 22 formed between the inner flame tubes 6 with its bottom surface. It is set up like this. 23 is an air introduction path. Reference numeral 24 denotes a combustion control tube, which is set at the upper part of the inner side of the outer flame tube air hole section 25, and whose upper end extends to the vicinity of the position facing the throttle section 15 of the outer tube 9;
An air chamber 26 is formed between the air hole portion 25 and the air chamber 26 . 27
is a communication hole provided on the wall surface of the combustion control cylinder 24, which connects the air chamber 2.
6 and the combustion chamber 8 are uniformly provided all the way through. Reference numeral 28 denotes a vent hole provided in the middle lower wall surface of the flow control tube 21 . 29 is directly above the ventilation hole 28 and converts the control area 22 to the monarch area 3
This is a shielding portion that divides the flow control tube 21 into a flow control region 31 and a flow control region 31, and is formed by applying beading processing, flaring processing, etc. to make the flow control tube 21 protrude in the outer circumferential direction.

Reference numeral 32 denotes a ventilation section that is set to have a constant interval between the flow control tube 21 and the inner flame tube top plate 12.

In the above configuration, when the lamp wick 1 is ignited, combustion starts, and high-temperature combustion gas due to combustion rises in the combustion chamber 8, creating a thermal draft, and the air necessary for combustion is supplied to the air holes in the inner flame tube 6 and outer flame tube 7. 11 and the through hole 17 of the red-hot part 16 into the combustion chamber 8, and combustion continues. At this time, the inner flame tube 6
Air supplied from inside is passed from below the flow control tube 21 to the lamp wick 1.
The flow is divided into air that is supplied nearby and air that ascends through the air introduction path 28. A portion of the rising air passes through the vent 28 and is supplied to the combustion chamber 8. In addition, the inner flame tube 6
The air supplied upward is supplied to the combustion chamber 8 and above from the air hole 11 and the ventilation hole 13. A portion also descends into the royal region 31 and is also supplied to the combustion chamber 8 from the relatively lower air holes 11 . On the other hand, the vaporized fuel becomes a mixed gas with air and mainly rises in the combustion chamber 8. However, since the pressure in the monarchy basin 30 and the monarchy basin 31 becomes negative,
A part of the mixed gas flows into the royal basin 30 and the royal basin 31. Therefore, the monarch basin 30 and the monarch basin 31 are filled with unburned gas. This unburnt gas is mixed with the air flow in the communication hole 28 and the ventilation section 32, and is again supplied to the combustion chamber. Therefore, during strong twist firing, unburned gas and air are supplied from near the upper end of the inner flame tube 6 to the upper end of the combustion chamber 8 in a well-mixed state. The unburned gas is combusted by the flame formed above.Next, as the exposed height of the wick 1 is lowered to reduce the amount of combustion, the flame gradually descends into the combustion chamber 8. The flow in this case is the same as in the case of strong twist firing, but since the vaporized gas is greatly reduced, the amount of unburned gas flowing into the monarchy region 31 is also reduced.Therefore, the vicinity of region B is a good mixing region. A stable flame is formed in this part, the wall of the inner flame tube 6 becomes red hot, and the flame formed above completes the combustion. Since the gas is supplied into the combustion chamber 8 and burned by the flame, there is almost no unburned gas component in the monarch basin 31 facing above the flame, and the air hole 1 above the flame
The air discharged from 1 and the vent 13 is clean, and the exhaust gas characteristics (Co/CO2) are not deteriorated.

Air from the outside is divided by a constriction part 15 at the upper end of the outer cylinder 9 into air from the air hole 11 of the outer flame cylinder 7 and air from the through hole 17 of the red-hot part 16, and each is supplied into the combustion chamber 8. At this time, flame holding is formed in the air holes 11 of the outer flame tube 7 and the through holes 17 of the red-hot part 16, but a part of the unburned gas in the combustion chamber 8 flows through the air passage in the part facing the throttle part 15. 20, and some of it is directly discharged from the upper part of the through hole 17 of the red-hot part 16, which worsens the Co/CO2 concentration during low combustion. The combustion control tube 24 is provided for this purpose.
Then, the unburned gas is locally combusted in the air chamber 26 by the air from the outer flame tube vaporization section 25 to reduce the leakage amount of the unburned gas, and the leaked unburnt gas is released into the combustion chamber as shown by the black arrow C. The CO/CO2 is drawn into the combustion chamber 8 by a draft and burned, and also causes air to flow along the outer flame tube 7.
This has halved the deterioration of

Therefore, the amount of combustion can be reduced to a considerably low level,
It becomes wide during combustion adjustment.

Also, during ignition, air is efficiently supplied to the lower part of the combustion chamber 8 from the communication hole 27 and the ventilation hole 28, so that combustion is quickly promoted and less CO1 odor is generated. A similar effect can also be obtained by burning for a long time in a well-sealed room. In other words, under oxygen-deficient conditions, the amount of combustion decreases as the oxygen concentration decreases, and a phenomenon similar to that seen when the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion is observed. Since air is supplied to the combustion chamber 8 through the pores 28, combustion is promoted there and oxygen deficiency characteristics are also improved.

Problems to be Solved by the Invention However, in the above configuration, the flames formed in the air hole 25 of the outer flame tube 7, the through hole 17 of the incandescent portion 16, and the upper end of the combustion control tube 24 tend to attract each other. This caused problems in practical use, such as a blow-off phenomenon of flame holding and making flame holding very unstable, resulting in pulsating noise and flame shaking during combustion. This phenomenon was particularly likely to occur when the thermal draft changed, such as when switching from low combustion to high combustion, when the flow velocity changed, or when there was an external air flow such as wind.

The present invention solves these conventional problems, and by preventing noise and flame shaking when switching from low combustion to high combustion or when applying wind, the combustion characteristics are good and the combustion amount adjustment is easy. The purpose is to provide a large, safe, and comfortable combustion device with no practical problems.

Means for Solving the Problems In order to solve the above-mentioned problems, in the combustion apparatus of the present invention, the part of the red-hot part of the outer flame tube facing the throttle part of the outer cylinder is made non-porous, and the part of the outer flame tube vaporizing part is made of a non-porous part. The upper end of the combustion control tube extends to the lower end of the lower through hole.

Effects of the present invention With the above-described configuration, the pores of the outer flame cylinder, the through holes of the red-hot part, and the flame holding formed at the upper end of the combustion control cylinder are prevented from attracting each other, and the outer flame is prevented from attracting each other. The flame holding formed at the upper end of the combustion control cylinder is stabilized due to the flow resistance of the passage formed by the non-perforated part of the cylinder and the combustion control cylinder extension, so that combustion noise and flame fluctuation are not generated. Can cause combustion.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. Parts that are the same as those in FIG.
A perforated portion of the red-hot portion 16 of the outer flame tube 7 facing the constricted portion 15 of the outer tube 9 is a non-perforated portion 34. Also, the combustion control tube 24
has its upper end extended to the lower end of the lowest through hole 17 provided in the incandescent cylinder 16.

In the above configuration, combustion is carried out in the same manner as that shown in FIG. 25, the distance between the communication hole 27 of the combustion control tube 24 and the lowest stage of the through hole 17 becomes longer, and the flame holding formed in the two parts is no longer attracted to each other.

In addition, since the upper end of the combustion control tube 24 extends to the lowest stage of the through hole 17 of the red-hot part 16 of the outer flame tube, the combustion control tube 24
A passage is formed between the upper end portion and the non-porous part 34 of the red-hot part 16 of the outer flame tube, and the rising speed of unburned gas from the air chamber 26 is weakened by the flow resistance of this passage. At the same time, the amount of air entering the air chamber 26 from the outer flame cylinder air hole portion 25 can be suppressed. Therefore, combustion control tube 2
The flame stability formed at the upper end of 4 becomes stable, and the effects of changes in draft force and wind blowing become extremely small, which of course reduces the generation of combustion noise and the adjustment of the amount of flame fluctuation. Therefore, there is no combustion noise or flame fluctuation, and it is possible to obtain a combustion device that is safe and practically comfortable during the combustion amount adjustment.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a combustion device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a combustion device showing a conventional example. 1...Light wick, 6...Inner flame cylinder, 7...
...Outer flame tube, 8... Combustion chamber, 9...
Outer cylinder, 11... Air hole, 18... Transmission tube, 21... Control tube, 22... Control area, 24... - Combustion control tube, 25... air hole section, 26... air chamber, 27... communication hole, 28... ventilation hole, 29... ...shielding part,
33... Inner flame tube air hole, 34... Non-porous part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 18 Series 1 % -p! ! , L-bu happy 2nd figure

Claims (1)

[Claims] an outer flame tube consisting of a pore section having a large number of air holes and a red-hot section formed above the pore section, an inner flame tube having a large number of air holes disposed inside the outer flame tube, and the outer flame tube. an outer cylinder located outwardly, a transparent cylinder placed above the outer cylinder, and a lamp wick vertically movable at a lower end of a combustion chamber formed between the outer flame cylinder and the inner flame cylinder; a flow control tube disposed inside the inner flame tube, extending from near a position facing the lamp wick to near an upper end of the inner flame tube, and shielding a control area formed between the inner flame tube and the inner flame tube with a lower surface; , a combustion control tube disposed above the inner side of the pore portion of the outer flame tube and forming an air chamber between the outer flame tube and the combustion control tube, and a communication hole provided in the wall surface of the combustion control tube; A combustion device in which the part of the cylinder incandescent part facing the outer cylinder upper constriction part is made non-porous, and the upper end of the combustion control cylinder extends to the lower end of the lowermost stage of the outer cylinder incandescent part through-hole.