JPS61161318A - Burner - Google Patents

Abstract

PURPOSE:To form even and firm flames by providing respectively a secondary flame opening section at the upper section of an internal flame cylinder, a flame straightening section above the secondary flame opening section, a flame retaining section at the upper end of a red hot section and at the same time by making the distance between the flame straightening section and the red hot section larger than the distance between the flame retaining section and the internal flame cylinder. CONSTITUTION:The topmost section of an internal flame cylinder 6 is formed with a secondary flame opening section 12 which has a group of air holes the opening area of which is larger than other sections. A flame straightening section 14 that projects outwards to the side of a combustion chamber 8 is provided with a small distance above from the secondary flame opening 12. A secondary flame ring 19 is provided at the upper end of a red hot section so that the air passage 20 between the red hot section 15 and a penetrating cylinder 17 is shielded and a secondary flame ring 19 is near the secondary flame opening 12 of the internal flame cylinder 6. A flame retaining section 21 that projects at the upper section of the red hot section 15 towards the inside of the red hot section, that is, the side of the combustion chamber 8 is provided lower than the flame straightening section 14 and the distance a between the flame straightening section 14 and th e red hot section 15 or the distance b between the flame straightening section 14 and the flame retaining section 21 is set up larger than the distance c between the flame retaining section 21 and the internal flame cylinder 6.

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. Prior Art Conventionally, in this type of combustion apparatus, as shown in FIG. 3, a secondary flame ring A was fixed to the upper end of a red-hot part B, and the upper end of a transmission cylinder C was held at the end of the secondary flame ring A. During steady combustion, a secondary flame is formed, and combustion is promoted by secondary air H supplied from the through hole E at the upper end of the red-hot part B and the air hole G of the inner flame cylinder F, and stable combustion is performed.

Problems to be Solved by the Invention However, in the above configuration, when the combustion amount is reduced to a value smaller than the rated combustion amount, the following problems and noises occur.

fll Since the through holes E of the outer flame tube are continuously provided, as the combustion amount is reduced, the secondary flame gradually falls into the combustion chamber J like the flame L, and a large amount of flame is formed on the side of the flame I. The secondary air hits the flame Ii, which is about to complete combustion in the combustion chamber, and cools it to suppress the combustion reaction, which worsens the combustion condition and generates a large amount of carbon monoxide.

(2) The flame held in the through hole E of the red-hot part B or the flame held in the air hole K of the wall of the inner flame tube F gradually disappears from above the combustion chamber J when the combustion amount becomes small. It simply acts as an air vent, and the air cools the secondary flame, suppressing the combustion reaction and worsening combustion.

13) In order to completely prevent deterioration of combustion when the combustion amount is limited, it is necessary to suppress the combustion amount in the combustion chamber I and prevent the flame I from dropping. To do this, the VC must lower the combustion chamber J. In that case, the area of the red-hot portion B becomes smaller and less radiant heat is obtained.

The present invention is intended to solve these conventional problems, and aims to provide a combustion device that has a wide range of combustion amount adjustment and has a large area of red-hot part, thereby emitting a large amount of radiation.

Means for Solving the Problems In order to solve the above problems, in the combustion device of the present invention, a secondary flame port having a group of air holes having a larger opening area than other parts is provided in the upper part of the inner flame cylinder, and this secondary A flame stabilizing part is formed above the flame opening and projects outward with a slight interval, and a flame stabilizing part projects inward from the red-hot part at the upper end of the red-hot part where VC is thrown above the outer flame tube. The flame regulating section is provided below the flame regulating section, and the interval between the flame regulating section and the red-hot section or between the flame regulating section and the flame stabilizing section is made larger than the interval between the flame regulating section and the inner flame cylinder.

Effect of the Invention With the above-described configuration, the present invention increases ventilation resistance within the combustion chamber and bends the combustion gas flow path, resulting in better mixing of combustion gas. A large amount of air is supplied from the secondary flame outlet, and the strong flame formed at the secondary flame opening can be directed outward by the flame regulating section.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In Figures 1 and 2, 1 is a cylindrical lamp wick, and the inner tube 2
and the core outer cylinder 3 so as to be vertically movable. The upper ends of the inner core tube 2 and the outer core tube 3 form an inner flame tray 4 and an outer flame tray 5, respectively, on which an inner flame tube 6 and an outer flame tube 7 are placed.

During combustion, the upper end of the lamp wick 1 is exposed within a combustion chamber 8 formed between an inner flame tube 6 and an outer flame tube 7, where the fuel is vaporized.

Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, the outer flame cylinder 7, and the outer cylinder 9 are arranged approximately concentrically in order from the inside, and are integrated and fixed by two Talos pins 1o. Reference numeral 11 indicates a large number of air holes provided in the inner flame tube 6 and the outer flame tube 7. A secondary flame port 12 is formed at the top of the inner flame cylinder 6 and has a group of air holes having a larger opening area than other parts. Reference numeral 13 denotes an inner flame tube top plate that closes the upper end opening of the inner flame tube 6. A flame regulating part 14 is set above the secondary flame opening part 12 and projects outward, that is, toward the combustion chamber 8 side, through a small interval. It is formed by bending it away. 15 is a red-hot part provided on the upper part of the outer flame cylinder 7, and 16 is a through hole formed in the red-hot part 15. Reference numeral 17 denotes a transparent cylinder made of a transparent material such as glass lath, which is placed on the outer cylinder 9 and extends above the red-hot part 15 and the inner flame cylinder 6. 18 is a top ring placed above the transmission tube 17. Reference numeral 19 denotes a secondary flame ring thrown at the upper end of the incandescent part 15, so as to block the air passage 2° between the incandescent part 15 and the transmission cylinder 17, and near the secondary flame opening part 12 of the inner flame cylinder 6. It is set to . The upper end of the red-hot part 15 is a false flame part that protrudes inward from the red-hot part 15, that is, toward the combustion chamber 8 side, and is set below the flame regulation part 14, and in this embodiment, it is located inside the secondary flame ring 19. It is constructed integrally with the secondary flame ring 19 by bending the entire end downward and further bending the end inward.

Here, the interval between the flame regulating section 14 and the red-hot section 15 (&1 or the interval fbl between the flame regulating section 14 and the flame stabilizing section 21 is set to be larger than the interval between the flame regulating section 21 and the inner flame tube 6; 0).

Further, in this embodiment, the flame regulating part 14 and the flame stabilizing part 21 are formed of plate-shaped parts that protrude into the combustion chamber 8, but any material can be used as long as it increases the ventilation resistance of the combustion chamber 8. I don't mind anything. 22 is inside.

This is the secondary combustion chamber where the outer flame cylinders 6 and 7 are heated.

In the above configuration, when the wick IK is ignited, combustion starts,
The high-temperature combustion gas rises in the combustion chamber 8, creating a thermal draft, and the air necessary for combustion flows into the inner flame tube 6,
The air is supplied into the combustion chamber 8 through the air hole 11 of the outer flame tube 7 and the through hole 16 of the red-hot part 15, and combustion continues. During normal combustion, a flame Fr (solid line) is formed between the flame holding part 21 and the secondary flame port part 12 of the inner flame cylinder 6. In this case, since the flame regulating part 14 protrudes into the combustion chamber B, the ventilation resistance within the combustion chamber 8 increases, and the amount of air flowing into the combustion chamber 8 from the through holes 16 and the air holes 11 is suppressed. .

Therefore, the amount of combustion in the combustion chamber 8 is reduced, and even if the amount of combustion is reduced, the flame Ft is completely prevented from falling into the combustion chamber B, so that deterioration of the combustion exhaust gas can be suppressed. Therefore, there is no need to lower the height of the combustion chamber 8 in order to prevent deterioration of combustion exhaust gas when the combustion amount is reduced, and the incandescent part 15'i (larger area can be made wider to obtain greater radiation. A vortex is generated near the ends of the section 14 and the flame stabilizing section 21, and the flame Fri can be firmly held, so even if the combustion amount is reduced and the flame Fs (broken line) becomes small, it will not flow into the combustion chamber θ. It is possible to completely prevent falling.It is possible to increase the range of adjustment of the combustion amount.Furthermore, since the opening area of the secondary flame port S12 is larger than that of the other parts, a large amount of It supplies air to the upper part of the combustion chamber 8 and also serves as a flame regulating section.

14 and the flame stabilizing part 21 (solid arrow), the flow path of the combustion gas is bent (solid arrow), so that mixing is improved and a strong and uniform flame can be formed. The flame stabilizing section 21 is set below the flame regulating section 14, and the final VC of the combustion gas flows through the flame regulating section 1.
Since the flames are spread outward by 4, it is possible to prevent the flames from gathering and becoming a large flame. Further, the interval a between the flame regulating part 14 and the red-hot part 150 or the interval between the flame regulating part 14 and the flame stabilizing part 21 is larger than the interval C between the flame stabilizing part 21 and the inner flame tube 6,
-t'', that is, a>c and b>c, so the ventilation resistance of the combustion chamber 8 is determined by the flame holding part 21. Therefore, the air supplied from the secondary flame opening part 12 has a ventilation resistance. Since there is almost no resistance and a large amount of air is supplied, a strong and uniform flame is formed.

If b<c, the ventilation resistance is the flame regulating part 14.
Since the amount of air supplied from the secondary flame port 12 is also suppressed, there will be a lack of air near the secondary flame port 12, resulting in poor combustion conditions and a tendency to produce yellow flames, etc. .

Further, in this embodiment, the transmission tube 17 is extended above the inner and outer flame tubes 6.7 to form a secondary flame combustion chamber 22 above the combustion chamber 8. With this configuration, the flame Fr is Since the combustion gas is not cooled and the flow of combustion gas is not disturbed, it is extremely effective in improving combustion characteristics.

Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects.

(1) Since the flame stabilizing portion protrudes into the combustion chamber, the ventilation resistance within the combustion chamber increases, and the amount of air flowing into the combustion chamber is suppressed, so that the amount of combustion within the combustion chamber can be reduced. Therefore, even when the combustion amount is reduced, the flame can be prevented from falling into the combustion chamber. In addition, vortices are formed near the ends of the flame stabilizing section and the flame regulating section to firmly hold the flame, which is more effective in preventing the flame from falling into the combustion chamber. Therefore, deterioration of the combustion exhaust gas can be suppressed, and the combustion amount can be adjusted over a wide range. Furthermore, since the combustion exhaust gas is less likely to deteriorate, the height of the combustion chamber can be made relatively high, and the entire red-hot part can be raised to obtain a large amount of radiation.

(';!J The flow path of the combustion gas rising inside the combustion chamber is bent by the flame holding part and the flame regulating part, so that the combustion gas is mixed better and a large amount of air flows upward from the secondary flame opening into the upper part of the combustion chamber. A uniform and strong flame can be formed.

(3) The flame stabilizing section is set at a position below the flame regulating section, and the flow of combustion gas is eventually spread outward, so that it is possible to avoid the flames gathering and forming a large flame.

(2) Since the interval between the flame regulating section and the red-hot section or the interval between the flame regulating section and the flame stabilizing section is made larger than the interval between the flame stabilizing section and the inner flame cylinder, the ventilation resistance in the combustion chamber is determined by the flame stabilizing section.

That is, the flame holding section restricts the danger of combustion within the combustion chamber, and excess unburned gas is combusted with air from the secondary flame opening. In this case, since no ventilation resistance is applied to the secondary flame port, sufficient air is supplied and a uniform and strong flame can be formed.

[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 an enlarged sectional view of the same main part, IiP! FIG. 13 is an enlarged cross-section of the main part of a conventional combustion device. 6... Inner flame tube, 7... Outer flame tube, 9...
Outer cylinder, 12...Secondary flame opening part, 14...Flame regulation part,
15... Red-hot part, 17... Transmission tube, 19...
... Secondary flame ring, 20 ... Air path, 21.
... Floor inflammation department. Name of agent: Patent attorney Toshio Nakao and one other person Q.
Outer cylinder f?・Secondary Enguchi Kuni

Claims (3)

[Claims] (1) An inner flame tube, an outer flame tube, and an outer tube each having a plurality of air holes are arranged approximately concentrically from the inside, and a transparent tube made of glass or the like is placed above the outer tube to form a combustion tube. A secondary flame port having a group of air holes with a larger opening area than other parts is provided at the upper part of the inner flame tube, and a secondary flame port is provided above the secondary flame port with a slight gap to the outside. A flame stabilizing part is provided below the flame stabilizing part, and a flame stabilizing part is provided below the flame stabilizing part at the upper end of the red hot part provided above the outer flame tube and protruding inward from the red hot part. A combustion device in which the distance between the flame regulating section and the red-hot section or between the flame regulating section and the flame stabilizing section is larger than the interval between the flame tubes. (2) The combustion device according to claim 4, wherein the flame holding portion is formed by bending the inner circumferential end of the secondary flame ring inward. (3) The combustion device according to claim 1, wherein the flame regulating portion is formed by bending the outer peripheral end of the inner flame tube top plate outward.