JPH0445304A - Combustion cylinder - Google Patents

Abstract

PURPOSE:To reduce the generation of CO by making the diameter of a top ring larger than that of the top of an outside flame cylinder and causing it to protrude outwardly, and providing an opening for ventilation in the bottom of the top ring on the side of the top of the outside flame cylinder. CONSTITUTION:In a combustion cylinder, fresh air flows through bottom openings 11 of a top ring 10 into the top ring 10 as shown by an arrow A by the draft of combustion gas to be fed to the forward end of flame 14. Therefore, even when a wick 4 is raised to produce an excessively large flame and hence the flame is deflected outwardly by a flame deflector 7, the forward end of the flame 14 is forced inwardly by the fresh air, thereby preventing it from coming into contact with the top ring 10, while the fresh air is supplied to the flame 14 to accelerate the combustion. As a result, the generation of CO is practically eliminated and the length of the flame is reduced, preventing the flame from extending outwardly from the ring 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a combustion tube used in a domestic kerosene stove.

BACKGROUND OF THE INVENTION Conventionally, as shown in FIG. 2, this type of combustion tube supplies fuel to a combustion chamber 3 between an inner flame tube l having a large number of air holes fa and an outer flame tube 2 having a large number of air holes 2a. The tip of the wick 4 is exposed to vaporize and burn the fuel. Normally, the outer flame cylinder 2 forms a red-hot part 6 having a through hole 6a with a large opening area above the constricted part 5a of the outer cylinder 5, and the fuel vaporized from the lamp wick 4 flows through the through hole 6a into the combustion chamber. 3
The air introduced into the chamber was mixed and combusted, causing the red-hot section 6 to become red-hot to obtain radiant heat. Further, an annular top ring 8 is provided at the upper end of the outer flame tube 2 so as to surround the outer periphery of the flame expansion plate 7 on the upper part of the inner flame tube 1, and the flame 9 formed at the upper part between the inner and outer flame tubes 1 and 2 is I tried to keep it inconspicuous from the outside.

Invention tries to solve! Problem I However, in the above conventional configuration, the height of the wick 4 is suddenly increased from a weak combustion state where the wick height is low, resulting in a vaporization amount that is higher than that during steady strong twist firing, and the amount of air cannot keep up with the combustion tube. That is, an excessive flame is generated from the upper part between the outer flame tube 2 and the inner flame tube 1. This flame is deflected outward by the flame expansion plate 7, and a portion of it touches the top ring 8, where it is cooled and generates CO.

The present invention was made in view of these points, and is aimed at reducing the generation of CO.

Means for Solving the Problems In order to achieve the above object, the present invention provides 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, and a flame tube disposed inside the outer flame tube. an inner flame cylinder having a large number of air holes, an outer cylinder located outside the outer flame cylinder, a heat-resistant transmission cylinder placed above the outer flame, and a covering on the upper end of the inner flame cylinder. an inner flame tube top plate attached to the inner flame tube top plate, a flame expansion plate attached to the inner flame tube top plate, an outer flame tube top attached to the upper end of the outer flame tube and the heat-resistant transparent tube, and an outer periphery of the flame expansion plate. Equipped with an annular top ring attached to the top of the outer flame tube so as to surround the
The top ring has a larger diameter than the top of the outer flame tube, projects outward, and has an opening for ventilation between the top ring and the top of the outer flame tube.

Operation The present invention allows air to constantly flow into the inside of the top ring via the truts through the opening provided at the bottom thereof. Therefore, even if an excessive flame is generated and turned outward by the flame expansion plate, the tip of the flame will be supplied with fresh air by the draft, and the flame will reach the top. Not only does this eliminate contact with the ring, but conversely, the fresh air promotes combustion, which reduces the generation of CO and shortens the flame, reducing the sense of danger due to excessive flame.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIG. 1. Parts that are the same as those shown in FIG. The combustion tube is formed of an inner flame tube and an outer flame tube 1 and 2. 9 is outer flame tube 2
and a heat-resistant transmittance 5a made of heat-resistant glass.The outer flame tube top is closed between the upper ends of the flame tube and the heat-resistant transmittance %5a made of heat-resistant glass, and a top ring 10 is attached to the upper part of the outer periphery. This top ring IO has a larger diameter than the outer flame tube top 9 and is shaped to protrude outward, and an opening 11 is formed between the top ring IO and the outer flame tube top 9 at its lower part. Further, a large number of slit-like through holes 12 are formed in the peripheral wall of the top ring IO. In addition, 1 in the figure
3 is the inner flame tube top plate.

In the above configuration, the combustion tube has an extremely medium combustion draft, so that fresh air enters the top ring IO from the bottom opening 11 of the top ring IO as shown by arrow A, and is supplied to the tip of the flame 14. . Therefore, even if the lamp wick 4 is raised rapidly to produce an excessive standing flame, and this is turned outward by the flame expansion plate 7, the tip of the flame 14 is pushed inward by the fresh air, and the top ring 10 will no longer be touched. Further, the excessively large flame 14 obtains air from the opening 11, thereby promoting combustion. As a result, almost no CO is generated, and at the same time the flame becomes short and does not extend outward from the top ring 10.

Effects of the Invention As described above, according to the present invention, it is possible to prevent CO from becoming bad at the end of the bridge due to an excessive flame that occurs when the combustion suddenly changes from weak combustion to strong combustion, and on the contrary, the flame is shortened. This makes it less noticeable from the outside of the top ring, making it less visually dangerous. Another advantage is that discoloration caused by flame contact with the top ring can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a combustion tube according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional combustion tube. 1... Inner flame tube, 2... Outer flame tube, 5... Outer tube, 6.
... Red hot part, 7 ... Flame expansion plate, 9 ... Outer flame tube top,
lO...Tompling, 11...Opening, 13...
Inner flame tube top plate. Name of agent: Patent attorney Shigetaka Awano

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 arranged inside the outer flame tube, and the outer flame tube. an outer cylinder located outside the cylinder; a heat-resistant transmission cylinder placed above the outer cylinder;
An inner flame tube top plate that covers the upper end of the inner flame tube, a flame expansion plate that is attached to the inner flame tube top plate, and an outer flame tube that is attached to straddle the upper ends of the outer flame tube and the heat-resistant transparent tube. and an annular top ring attached to the outer flame tube top so as to surround the outer periphery of the flame expansion plate, the top ring having a larger diameter than the outer flame tube top and protruding outward, and a bottom thereof. A combustion tube with an opening for ventilation between it and the top of the outer flame tube.