JPH0221108A - combustion device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 suction vaporization type combustion device used in kerosene stoves and the like. As shown in Fig. 2, the tip of the wick 4, which is the fuel supply section, is exposed in the combustion chamber 3 between the inner flame tube 1 and the outer flame tube 2, which have many air holes, to vaporize and burn the fuel. It has become. The outer flame cylinder 2 normally 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. The air introduced into the chamber 3 was mixed and combusted, causing the red-hot section 6 to become red-hot to obtain radiant heat.

In this configuration, when the exposed height of the lamp wick 4 is lowered and the combustion amount is throttled to weak combustion, the amount of fuel vaporized decreases, so the air ratio in the combustion chamber 3 increases compared to when strong combustion is performed. Therefore, the combustion position moves downward, and the lower air hole 1a of the inner flame cylinder 1
A flame is formed, and the temperature near the wick 4 rises.

In this state, if the height of the wick 4 is suddenly raised to the height of steady strong combustion, the amount of vaporization will be higher than that during steady strong twist firing, and the amount of air will not be able to follow that, causing the upper part of the combustion tube to In some cases, an even larger flame was generated, giving a sense of danger, or the flame could not be maintained, resulting in a lift flame and a foul odor.

Therefore, in order to send a large amount of air to the upper part of the combustion chamber 3 for complete combustion, it is considered to provide a large hole, for example, a square hole 7, in the upper part of the red-hot part 6 of the outer flame tube, and to provide dense air holes 8 in the upper part of the inner flame tube. was.

With this configuration, even if there is a sudden switch from weak combustion to strong twist firing, a large amount of air can be supplied to the upper part of the combustion chamber, and as a result, it is possible to suppress the generation of bad odors due to excessive standing flames and lift flames. Also, although the square hole 7 makes the red-hot part 6 narrower, flame holding is formed in the dense air holes 8 provided at the top of the inner flame tube, so the brightness of this part improves, producing the same effect as the red-hot part of the outer flame tube. In this way, the disadvantages of reducing the red hot area can also be eliminated.

Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, during steady strong combustion, the position of the combustion outer flame 11 formed above the combustion chamber is high, so it is sometimes difficult to hold the flame in the dense air holes 8. As a result, there are problems in that the part becomes black and looks bad, and the amount of combustion in that part decreases and the outer flame 11 becomes longer.

In order to solve this problem, dense air holes 8 are installed up to the upper end of the inner flame cylinder 1.
We thought of creating a flame hold in this entire area by providing a flame holder, but in this case, the opening area near the top of the inner flame tube would be too large, and there would be insufficient air to escape from the vent hole 10 of the top plate 9 of the inner flame tube to the top. However, a problem arises in that the outer flame 11 at the upper part becomes incompletely combusted.

The present invention was developed in view of these points, and suppresses the generation of bad odors due to excessive standing flames and lift flames when rapidly switching from ζ-weak combustion to strong-twist firing, and achieves stable combustion from strong-twist firing to weak-twist firing. It is intended for this purpose.

Means for Solving the Problems In order to solve the above-mentioned problems, the combustion device of the present invention provides a dense air hole slightly below the upper end of the inner flame cylinder, and
An air hole is provided at least at one location in the vertical direction between the uppermost dense air hole and the upper end of the inner flame cylinder.

Function: Due to the above-described configuration, the present invention is capable of transferring fire from the upper outer flame to the densely packed air holes in the upper part of the inner flame cylinder through the flame holding formed in the air holes from the outer flame at the top, so that the dense air holes are always maintained. It is now possible to reliably maintain flame and achieve stable combustion from strong twist firing to weak combustion.

Embodiment In the above, an embodiment of the present invention will be explained based on FIG. 1. The same parts as those in FIG. A dense air hole 8 is provided in a portion facing the outer flame tube square hole 7 slightly below the upper end of the flame tube 1, and at least a holeless portion between the uppermost dense air hole 8a and the upper end of the inner flame tube is provided. Front -
Air holes 12 are provided in the vertical direction at certain locations.

In the above configuration, especially during strong twist firing, the position of the outer flame 11 above the combustion chamber is high as in the conventional case, but the air holes 12 located relatively close to the outer flame 11 have strong protection. A flame is formed. Through the flame holding formed in the air hole 12, flame holding is also formed in the dense air hole 8, and the dense air hole 8
Even if the flame holding formed in the air hole 12 is about to disappear,
Due to the flame transfer effect from the flame holding formed in the dense air holes 8, flame holding can be ensured. Therefore, the brightness of this part is improved, the appearance becomes better, and the outer flame 11 can also be made shorter.

In addition, it is better to have multiple air holes 12 in order to ensure fire transfer to the dense air holes 8, but if there are too many, the outer flame may turn yellow during steady combustion. When switching from weak combustion to strong twist firing, a problem arises in that insufficient air escapes upward from the vent hole 10 of the inner flame tube top plate 9, resulting in incomplete combustion.

In addition, in a reflective stove, the ambient temperature at the rear, which is the side of the reflector, increases due to the heat reflected from the reflector.
It is easier to hold the flame in the dense air holes 8, but since the temperature is lower in the front, it is effective to provide the air holes in the front.

Effects of the Invention As described above, the combustion device of the present invention suppresses the generation of bad odors due to excessive standing flames and lift flames when suddenly switching from weak combustion to strong twisting and darkening, and also suppresses the occurrence of bad odors from strong combustion to weak combustion. It is possible to obtain a comfortable combustion device that is safe and has no practical problems, such as stable combustion.

[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... Inner flame tube, 2... Outer flame tube, 4...
...Light wick, 5...Outer tube, 6...Outer flame tube red-hot part, 7...Large hole (square hole) 48...
Dense air holes, 12...Air holes. Name of agent: Patent attorney Shigetaka Awano and 1 other person 1st
Figure 4-・- -16-・- -m- 12-m- Inner flame tube Outer flame tube light = Outside Fugaijuku Ranjyo lkj! iS Large hole (square hole) Invitation L air hole Air hole

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 outside the outer cylinder, a transparent cylinder placed above the outer cylinder, and a lamp wick set at the lower end of a combustion chamber formed between the outer flame cylinder and the inner flame cylinder, and A large hole with a wide opening area is provided in the upper part of the outer flame tube, and a dense air hole is provided slightly below the upper end of the inner flame tube, and at least one point in the vertical direction is provided between the uppermost dense air hole and the upper end of the inner flame tube. A combustion device with air holes installed in certain places.