JPH0363403A - Combustion device - Google Patents

Abstract

PURPOSE:To suppress aggravation of CO/CO2 by low combustion and stabilize the combustion in the full range from a high to a low so as to make the degree of combustion adjustable in a wide range by providing a combustion-controlling cylinder which forms an air chamber on the inner side at an air hole part of an outer flame cylinder and which is designed to be moved up and down freely in an interlock with a wick-height adjuster. CONSTITUTION:A combustion-controlling cylinder 22 is designed to be moved up and down freely in an interlock with a wick-height adjuster 26 for a wick 1 with the interposition of a connecting rod 27. For a high degree of combustion the wick 1 is raised high and the forward rim of the combustion-controlling cylinder 22 is placed at a position facing a throttle part 15 of an outer cylinder 9. For a low degree of combustion the wick 1 is lowered and the combustion- control cylinder 22 is raised. At the position facing the throttle part 15 of the outer cylinder 9, unburned gas with a high CO concentration rising in the combustion chamber 8 undergoes complete combustion in the air chamber 24 so as to prevent its leakage to an air passageway 20 and suppress the aggravation of CO/CO2.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used in household heating appliances 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 in that the width of the combustion chamber alifT was narrow. As a solution to these problems, the applicant has already proposed a combustion device as shown in FIG. 2, which allows a wide range of combustion adjustment. This combustion apparatus will be described below. In FIG. 2, l is 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 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 tip of the wick 1 is exposed within a combustion chamber 8 formed between an inner flame tube 6 and an outer flame tube 7, where combustion is vaporized. Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, outer flame cylinder 7, and outer cylinder 9 are sequentially arranged on a substantially concentric circle from the inside and are integrated by a fixing pin 10. 11 is the inner flame cylinder 6 and the outer flame cylinder. There are many air holes provided in 7. 12 is the inner flame tube 6
The top plate of the inner flame tube closes the upper end opening of the inner flame tube, and has a ventilation hole 13 that communicates from the inside of the inner flame tube 6 upward. 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 red-hot part 16 is formed in the outer flame cylinder 7 above this constriction part, and a large through-hole 1 is formed.
7 is provided. A heat transmitting tube 18 is made of a heat transmitting material such as glass, and is mounted on the outer tube 9.

Reference numeral 19 denotes a top frame, which is placed on the upper end of the red-hot part 16 so as to block the state of the air passage 20 between the red-hot part 16 and the heat-transmitting cylinder 18, and fixes the heat-transmitting cylinder 18. Reference numeral 22 denotes a combustion control tube, which is set inside and above the outer flame tube vaporization section 23;
The upper end extends to the vicinity of a position facing the constricted part 15 of the outer cylinder 9, and an air chamber 24 is formed between it and the vaporizing part 23. 2
Reference numeral 5 denotes communication holes provided in the wall surface of the combustion control cylinder 22, which are uniformly provided in large numbers so as to communicate the air chamber 24 and the combustion chamber 8.

In the above configuration, combustion is started to ignite the lamp wick 1, 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 transferred to the inner flame tube 6 and the outer flame tube 7. The fuel is supplied into the combustion chamber 8 through the hole 11 and the through hole 17 of the red-hot section 16, and combustion continues. At this time, air from the outside is passed through the constriction part 15 at the upper end of the outer cylinder 9 to the air hole 1 of the outer flame cylinder 7.
1 and air from the through hole 17 of the red-hot section 16, and each is supplied into the combustion chamber 8. At this time, although 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, a part of the unburned gas in the combustion chamber 8 flows through the air passage in the part facing the throttle part 15. A phenomenon occurs in which a part of the leakage occurs through the red-hot part 16 and is directly discharged from the upper part of the through hole 17 of the red-hot part 16. Flame 2 that forms upward during high combustion
Co/Co□ does not deteriorate because it is reburned at 1, but as the exposure height of wick 1 is lowered to reduce the amount of combustion, the flame 21 will drop and the leaked unburned gas will not be able to be completely burned. . Therefore, Co/Co2 was deteriorated during low combustion. For this purpose, a combustion control tube 22 is provided, which locally burns unburned gas in the air chamber 24 using air from the outer flame tube vaporization section 23 to reduce the leakage of unburned gas, and As shown by the black arrow, the gas is drawn into the combustion chamber 8 by the draft inside the combustion chamber and burned, and air flows along the outer flame tube 7, causing Co/CO! Preventing deterioration.

Problem to be Solved by the Invention However, in the above configuration, the upper end of the combustion control cylinder is connected to the outer cylinder 9.
In order to further reduce CO leakage and prevent deterioration of CO/CO during low combustion, it is better to extend the upper end of this combustion control cylinder. There was a problem in that the pores in the lower part of the red-hot part 16 of the cylinder 7 did not hold the flame and did not become red-hot during high combustion.

The present invention solves these conventional problems, and maintains the red heat of the red-hot part of the outer flame tube under high combustion conditions, while maintaining the Co
/Co, the purpose is to further suppress the deterioration, to provide a comfortable combustion device that has good combustion characteristics from high combustion to low combustion, has a wide combustion amount adjustment range, and is safe and has no practical problems.

Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention is provided with a combustion control tube that forms an air chamber inside the air hole of the outer flame tube, and this combustion control tube is linked with a wick up/down device. It is installed so that it can move up and down.

Effect of the present invention With the above-described configuration, the unburned gas leaking to the outside of the outer flame tube, which has a particularly high concentration of CO, is locally completely combusted in the air chamber formed by the combustion control tube and the outer flame tube vaporization section. It is possible to reduce leakage of gas to the outside of the outer flame tube, improve exhaust gas characteristics (Co/Co2) during low combustion, and achieve stable combustion from high combustion to low combustion.

Embodiments Hereinafter, embodiments of the present invention will be described based on the attached drawings. Parts that are the same as the second one already explained will be given the same reference numerals and detailed explanations will be omitted. Only different parts will be explained. The combustion control tube 22 is configured to move vertically via a connecting rod 27 in conjunction with the vertical device 26 of the lamp 1, and the height of the lamp wick 1 is high as shown by the dotted line during high combustion.
The combustion control cylinder 22 is located at a position where the tip thereof substantially faces the constricted portion 15 of the outer cylinder 9, as in the conventional example shown in FIG. During low combustion, the height of the wick l becomes low, and the position of the combustion control tube 22 rises upward as shown by the solid line.

In the above configuration, during high combustion, the position of the combustion control tube 22 is the same as in the conventional case, and combustion is performed in the same manner. During low combustion, the combustion control cylinder 22 moves upward, and the part of the outer cylinder 9 facing the throttle part 15 completely burns the unburned gas in the combustion chamber 8, which has a particularly high CO concentration, in the air chamber 24. air passage 2
It is possible to prevent leakage to 0 and suppress deterioration of CO/Co. At this time, the through hole 17 of the red-hot part 16 facing the combustion control cylinder 22 has the advantage that it does not hold flame and does not become red-hot, but it has low combustion and gives the feeling that the amount of combustion is reduced.

Effects of the Invention As is clear from the description of the embodiments above, the combustion apparatus of the present invention can further suppress the deterioration of Co/Co at low combustion levels, and achieve stable combustion from high combustion to low combustion. Therefore, it is possible to obtain a safe and comfortable combustion device with a wide range of combustion amount adjustment.

[Brief explanation of drawings]

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 shown in a conventional example. l...Light wick, 6...Inner flame tube, 7...
...Outer flame tube, 8... Combustion chamber, 9...
Outer cylinder, 11... Air hole, 18... Heat transmission tube, 22... Combustion control tube, 23...
Evaporation section, 24...Air chamber, 26...Light wick up/down device.

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 in the inner shape of the outer flame tube; and the outer flame tube. an outer cylinder located outside the cylinder, a heat transmitting cylinder placed above the outer cylinder, and a lamp wick that is vertically movable at the lower end of the combustion chamber formed between the outer flame cylinder and the inner flame cylinder. A combustion control tube that forms an air chamber between the outer flame tube and the pore section is provided above the inner side of the pore section of the outer flame tube. A combustion device that can be set freely.