JPS61240015A - Kerosene burner - Google Patents

Abstract

PURPOSE:To contrive to improve combustion characteristics and to shorten the development term of a burner by forming a structure wherein the flange of a partition plate, which is held to the inner wall of a heat ray transmitting tube in a tightly contact state, is provided at a position higher than the flange of the top plate of an outer flame tube so as to form a full slit open inwards between both the flanges. CONSTITUTION:The outer edge part 15' of a partition plate 15 is held by being tightly contacted with the inner wall of a heat ray transmitting tube 12 and, in addition, the inward flange 15'' of the plate 15 is located at a position higher than the outer flange 14' of the top plate 14 of an outer flame tube. The gas containing a large amount of unburnt gas and unburnt particles flow in a secondary combustion chamber III and is completely burnt by the air (c) sent through a flame spreading device 13 and by the inward air (d) sent through a full slit 17 formed by the top plate 14 of the outer flame tube and the partition plate 15. In this case, because the whitish yellow flame formed at an intermediate combustion chamber II is covered from both sides by the air layers of (c) and (d) and oxygen is fully supplied in the flame and the complete combustion of said flame is realized. Further, because the air flow rate is controlled by the width of the slit, which is formed by highly accurate metallic pressed work parts such as the partition plate and the top plate of the outer flame tube, the dispersion of the width is small and the control of the width is easy and consequently the development term of the burner can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an oil combustor, and in particular to a combustion tube thereof.

2. Description of the Related Art A conventional combustor of this type has an inner flame tube 1 as shown in FIG.
, an outer flame tube 2, an outer tube 3, a heat ray transmission tube 4, an outer flame tube top plate 5, and a through hole 6 provided in the outer flame tube top plate 5, and a heat ray transmission tube through the outer flame tube top plate 5. Air was sent into the secondary combustion chamber 8 through a gap 7 between the cylinder 4 and the cylinder 4.

Problems to be Solved by the Invention However, in the above configuration, the air flowing in through the through hole 6 of the outer flame tube top plate 6 and the gap 7 with the heat ray transmitting tube 4 is actively used as combustion air to prevent the flame from existing. Air cannot be pumped or pumped into the area, and air cannot be used effectively. In addition, the accuracy of the inner diameter of the heat ray transmitting tube 4 is poor, and the gap 7 with respect to the outer flame tube top plate 5 also varies widely, making it difficult to regulate the amount of air flowing in and requiring a great deal of time during the development process. It had the problem of

The present invention solves such conventional problems and improves combustion characteristics by clarifying the role of combustion air.
: The aim is to shorten the development period for combustors.

Means for Solving the Problems In order to solve the above-mentioned problems, the oil combustor of the present invention has the brim of the partition plate held in close contact with the inner wall of the heat ray transmitting tube higher than the brim of the outer flame tube top plate. It has a circumferential slit that opens inward at both brim points.

Effect With the above-described configuration, the air that has risen between the outer flame tube and the heat ray transmission tube is sent directly to the area where the secondary combustion flame exists, and can be used effectively. This will allow regulations to be regulated without being influenced by the

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In Fig. 1, 9 is a cylindrical inner flame cylinder;
10 is a cylindrical outer flame tube, 11 is a cylindrical outer tube, and a tall cylindrical heat ray transmitting tube 12 is placed thereon.

A flame expansion device 13 is provided at the top of the inner flame tube 9, a ring-shaped outer flame tube top plate 14 is held at the top of the outer flame tube 10, and an outer edge 15 of the ring-shaped partition plate 15 is a heat ray transmitting tube. It is held in close contact with the inner wall of 12. Furthermore, the inward flange 14' of the partition plate 15 is provided at a higher position than the outward flange 15 of the outer flame tube top plate, and the same flange 14' extends further inward.

In the above configuration, the kerosene vapor vaporized from the wick is mixed with the air a that has flowed in through the many small holes of the inner flame tube 9 and the outer flame tube 10, and is partially combusted in the secondary combustion chamber I. Then, the unburned matter rises and is combusted in the intermediate combustion chamber (1) by the air bK flowing in from the through holes in the inner flame tube top plate 16 and the upper pores of the outer flame tube, forming the base of a white-yellow flame. Further, unburned steam and gas containing a large amount of unburned particles flow into the secondary combustion chamber m surrounded by the flame spreader 13 and the heat ray transmission tube 12, and the air %c sent out from the flame spreader 13 , the outer flame cylinder top plate 14 is connected to the partition plate 15
Complete combustion is achieved by the inward air d sent out from the circumferential slit 17 formed by.

At this time, the white-yellow flame formed in the intermediate combustion chamber (2) is wrapped and burned from both sides by the air layers C and d, and the air actively diffuses into the white-yellow flame. , the supply of oxygen into the flame is sufficient, and complete combustion approaches, resulting in the formation of a high-intensity flame with short flame legs. Therefore, the generation of soot, which is considered to be the biggest drawback of white-yellow flame, is hardly observed, and there is no fear that the flame will extend to the vicinity of the heat-ray transmitting tube, so there is no need to worry about the durability of the heat-ray transmitting tube 12. .

Effects of the Invention As described above, the oil combustor of the present invention provides the following effects.

(1) The inward-facing brim of the partition plate is placed higher than the outward-facing brim of the outer flame tube top plate, and air is forced into the area where the white-yellow flame is present, making efficient use of air. It is possible to produce a high-intensity flame with little soot and short flame length.

(To) The above air volume is regulated by the slit width formed by highly accurate pressed metal parts such as the partition plate and the outer flame tube top plate, so there is little variation, easy management, and shortening the development period. You can also expect

[Brief explanation of the drawing]

FIG. 1 is a half-sectional view of an embodiment of the present invention, and FIG. 2 is a half-sectional view of a conventional example. 9... Inner flame tube, 10... Outer flame tube, 11
...Outer tube, 12... Heat ray transmission tube, 1G
...Flame expansion device, 14...Outer flame tube top plate,
14'...Brim, 15...Partition plate, 1
6'... Outer edge of partition plate, 15... Partition plate collar, 16... Inner flame tube top plate, 17...
All around slit, ■・・・・・・-Next combustion chamber, t...
・Intermediate combustion chamber, g...Secondary combustion chamber, a, b, a・
·····air. Name of agent: Patent attorney Toshio Nakao and one other person Figure 2

Claims (1)

[Claims] An inner flame tube having a large number of small holes, an outer flame tube located outside the inner flame tube and having a large number of small holes, an outer flame tube located outside the outer flame tube, and an outer flame tube located outside the outer flame tube. It includes a tall heat ray transmitting tube placed on the tube, a flame expanding device provided above the inner flame tube, and an outer flame tube top plate held by the outer flame tube and having an outward brim. , a partition plate is positioned on the outside of the outer flame cylinder top plate, and the inward flange formed on the partition plate is located higher than the outward flange of the outer flame cylinder top plate, and both brim An oil combustor having a circumferential slit that opens inward between the partition plates, and a space between the outer edge of the partition plate and the heat ray transmitting tube closed.