JPS5941364Y2 - liquid fuel combustor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a liquid fuel combustor typified by an oblong pot-type line burner.

In conventional pot-type line burners of this type, various burner rings are disposed on the inner walls of the vaporization chamber, mixing chamber, etc., and heating elements are disposed in the chambers in order to perform green flame combustion.

However, the mixing characteristics of air and vaporized fuel gas were still insufficient, making it difficult to burn with a good green flame.

Also, the heating body that is generally installed inside the vaporization chamber.

It is formed by bending a flat plate-like member into an inverted U-shape, etc.
It was made available for use by simply using a flat plate-like member.

The above-mentioned inverted U-shaped member is almost hollow, but when this is used, the hollow part is filled with fuel,
For example, when only vaporized gas from kerosene fills the air, it does not mix well with air and cannot be completely combusted, causing carbon to adhere to the hollow parts and burning with red flame, producing a large amount of soot. was.

Also, in the case of a heating body formed from a single flat plate-like member,
Mixing of air and vaporized gas was insufficient, making it difficult to achieve complete combustion.

Furthermore, attempts were made to place a combustion aid in the upper part of the combustion chamber, but as the heating element a hollow round rod or a simple round rod was used, air and vaporized gas were The problem was that the mixture was poor and complete combustion was difficult.

The present invention aims to solve the above conventional problems and reduce combustion noise by improving the heating element.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 is the burner main body, and at its lower part there is formed a vaporizing chamber 3 having a large number of air holes 2 on both side walls.In the upper part of this vaporizing chamber 3, there are also a plurality of air holes on both side walls or one side wall. A mixing chamber 4 having holes 4a is connected to the upper part of the mixing chamber 4, and a combustion chamber 5 having a plurality of air holes 5a on both side walls is connected to the mixing chamber 4.

The vaporizing chamber 3, the mixing chamber 4, and the combustion chamber 5 have a rectangular cross section and are elongated in the horizontal direction, so that the structure is that of a so-called pot-type line burner.

6 is an oil pipe that supplies fuel to the inner bottom of the vaporization chamber 3; 7;
is an ignition heater having an ignition wick 8 and a heating coil portion 9, which ignites the liquid fuel supplied to the inner bottom of the vaporization chamber 3.

Reference numeral 10 denotes a combustion assisting body disposed in the upper part of the combustion chamber 5.
It is made of a hollow member such as a pipe that is long in the longitudinal direction, and has a large number of ILlls on its peripheral wall that communicate between the inside and outside.

12tJ: A pressure equalization plate disposed in the communication portion between the vaporization chamber 3 and the mixing chamber 4, equalizes the pressure of the mixture of air and vaporized gas from the vaporization chamber 3 to the mixing chamber 4, and rectifies the flow.

Reference numeral 13 denotes a plate-shaped heating body disposed inside the vaporization chamber 3, which is installed inside the vaporization chamber 3 so as to be elongated in the longitudinal direction thereof, and is provided vertically.

As a result, the interior of the vaporization chamber 3 is divided into two substantially in the lateral direction, and one opposing side wall of the vaporization chamber 3 faces the side surface of the heating body 13.

The heating body 13 is formed and installed by bending a heat-resistant plate material such as a metal plate into an inverted U-shape, joining the lower ends together, and bringing the lower ends into contact with the bottom of the vaporization chamber 3 to prevent it from falling. can.

In addition, the heating body 13 is the upper one. It may also be formed using a cylindrical body with a wider width in the downward direction.

The heating body 13 is formed of, for example, punched metal, and has a plurality of pores 13a in a side wall opposite to one opposite side wall of the vaporization chamber 3.

In addition to the above-mentioned materials, the heating body 13 may be made of the following materials:
Lath board, wire mesh, etc. can be used.

13b is a chamber provided within the heating body 13.

Reference numeral 14 denotes a partition plate whose side face faces the side wall of the heating body 13 to divide the chamber 13b into two chambers, and is made of a non-porous heat-resistant material, such as a metal plate such as a stainless steel plate.

The partition plate 14 is simply inserted into the chamber 13b without shaking.

As for the installation of the partition plate 14, as shown in FIGS.
The lower end of the holder may be clamped and fixed, and spot welding may be performed if necessary.

In addition, as shown in FIG. 6 and FIG.
It is sufficient to form a substantially U-shape in which only the upper part of b is partitioned, and its lower ends are clamped and fixed to the lower end of the heating element 13.

15 is a combustion flame formed in the vaporization chamber 3 and attached to the air hole 2; 16I/'i in the heating body 13;
This is a combustion flame formed so as to adhere to the pores 13a.

In the above configuration, the combustion process will next be explained.

Liquid fuel is supplied to the inner bottom of the vaporization chamber 3 by an oil feed vibro, and this fuel is ignited by an ignition heater 7.

Due to this ignition, the vaporized gas generated at the bottom of the vaporization chamber 3 rises as shown by the solid arrow a, a part of which enters the heating element 13 through the pores 13a of the heating element 13, and the rest rises above the vaporization chamber 3. do.

On the other hand, as shown by the broken line arrow, the combustion air is forcibly fed into the vaporization chamber 3 through the air hole σL2 of the vaporization chamber 3, and the vaporized gas inside the heating body 13 passes through the pores 13a of the heating body 13. As a result, the combustion flame 15.1
This leads to the formation of 6.

In this way, the chamber 13b of the heating element 13 is connected to the short L13 of the heating element 13.
The structure is advantageous for forming a secondary combustion chamber and achieving complete combustion.

The vaporized gas that is not completely combusted in the vaporization chamber 3 rises to the mixing chamber and combustion chamber 5, and is combusted with air supplied from the respective air holes 4a and 5a.

In addition, in the combustion chamber 5, since a large number of WLlls are provided in the auxiliary combustion body 10, the air and the vaporized gas are mixed well. Form.

Next, the function of the heating element 13 will be explained in more detail.

As described above, in the chamber 13bKz-, the combustion flame 16 is formed at the position of the pore 13a.

The formation of this combustion flame 16 will generate combustion noise, but if there is no partition plate 14, the combustion flame 16 formed on the two opposing side walls of the heating element 13 will be generated in the chamber 13.
A collision occurs within b.

This collision makes the combustion noise extremely high, and the sound leaks outside the burner, resulting in unpleasant noise.

Additionally, the above-mentioned collision causes turbulent flow of the vaporized gas, air, etc. injected into the chamber 13b, and this turbulence not only generates abnormal noise but also disturbs the orderly mixing state of the vaporized gas and air in the vicinity of the heating element 13. This is disadvantageous in terms of stabilizing combustion.

Therefore, as mentioned above, the partition plate 14 is arranged inside the chamber 13b,
By dividing chamber 13b into two chambers.

It is possible to prevent the combustion flames 16 from colliding with each other and the generation of turbulence due to this collision, making it difficult to generate abnormal combustion noise, and also hardly disturbing the mixing state of the vaporized gas and air in the vicinity of the heating element 13, so that a stable combustion state can be achieved. can get.

According to the heating body 13 shown in FIGS. 6 and 7, the partition plate 1
4 are arranged so as to partition only the upper part of the chamber 13b.

In the lower part of the chamber 13b, it is difficult for air to enter from the air holes 2, so the combustion flame 16 is difficult to form, and the collision of the combustion flame 16 as described above and the turbulence caused by this are difficult to occur. Therefore, the function of the partition plate 14 is not required so much.

Rather, in the lower part, the absence of the partition plate 14 facilitates mixing of the vaporized gas and air.

In the upper part. Combustion gradually becomes more active, causing collisions between the combustion flames 16 and the generation of turbulent flow. By installing the partition plate 14, it is possible to reduce combustion noise and improve combustion characteristics. As mentioned above, this is advantageous.

As described above, the liquid fuel combustor of the present invention reduces combustion noise and improves combustion characteristics, especially by providing a partition plate on the heating element arranged in the vaporization chamber.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a liquid fuel combustor according to an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, and Fig. 3 is an enlarged sectional view of the main part of the combustor. , FIG. 4 is a side view showing another embodiment of the heating body, FIG. 5 is a sectional view taken along the line A-A' in FIG. The figure is a sectional view taken along the line A-A' in FIG. 2.4a, 5a... Air hole, 3... Vaporization chamber, 4... Mixing chamber, 5... Burning chamber, 13
... Heating body, 13a ... Stomata, 13b.
...Room, 14...Partition plate.

Claims (3)

[Scope of utility model registration request] (1) A vaporization chamber with a rectangular cross section having a large number of air holes on one opposing side wall, a mixing chamber connected to the top of this vaporization chamber, a mixing chamber connected to the top of this vaporization chamber, and a mixing chamber connected to the top of this mixing chamber. The heating body has a chamber therein and a side wall of the vaporization chamber, the heating body having a chamber therein, and a heating body disposed with its side facing one opposing side wall of the vaporization chamber to divide the vaporization chamber into approximately two chambers. 1. A liquid fuel burner, wherein the chamber has a large number of pores, and a partition plate is provided in the chamber, the side surface facing the side wall of the heating element, and dividing the chamber into two chambers. (2) The liquid fuel combustor according to claim 1, wherein the partition plate is disposed throughout the interior of the heating element. (3) The liquid fuel combustor according to claim 1, wherein the partition plate is disposed above the heating element indoors.