JPS5969603A - Injection burner - Google Patents

Abstract

PURPOSE:To spread flame farther and to prevent the adhesion of carbon or the like to a fire port of the burner by a method wherein secondary and tertiary airs are supplied from around the burner. CONSTITUTION:A mixture of a fuel and primary air is injected from a nozzle 1 and is ignited by a plug 11 within an inner cylinder 4. In this case, the secondary air is supplied from around the combustion flame. Further, the tertiary air is injected from around the fire port 3. Thus, due to the abovementioned three stage air supply method, the flame of the burner is prevented from coming into direct contact with the inner surfaces of the fire port 3 and the inner cylinder so that the combustion loss of the burner is reduced. Particularly, the injection of the tertiary air scatters the carbon tending to adhere to the fire port 3 and keeps the burner clean.

Description

[Detailed Description of the Invention] This invention relates to an injection burner that has been developed to enable human feet to reach long distances and to prevent carbon generated from impurities in oil fuel from adhering to the burner mouthpiece. It is.

Conventionally, in burners used in horizontal furnaces for baking tiles and other items, the mouth of the burner has been narrowed with a refractory material in order to allow foot traffic to reach deep inside the burner.

Carbon from impurities in the fuel adhered to the narrowed area of the crater, causing a phenomenon in which the crater was further choked and blocked, which also hindered combustion.

It is an object of the present invention to solve this problem and to use inexpensive heavy oil without using expensive kerosene.

Figure 1 shows a cross-sectional view of a conventional burner, where 1 is a nozzle;
2 is a combustion tube, 3 is a crater, and since the crater 3 can be constricted, it was especially equipped with refractory material.

FIG. 2 shows an embodiment of the present invention, in which the same reference numerals are given to parts corresponding to those shown in FIG. 1.

4 is a cylinder consisting of a porous wall, and the outside ′
The air chamber 6 is connected to the air supply pipe 5. and inner cylinder 4
A secondary air supply path is formed through the peripheral wall of the secondary air. Furthermore, an air chamber 7 is provided outside the porous inner cylinder 4 at the tip of the combustion cylinder 2.
A tertiary air supply path is provided to send compressed air from the surrounding area to the crater 3.

In addition, 8 is the air supply path of the air τ chamber, 9 is the fuel supply pipe of the nozzle, 1
0 indicates the primary air supply pipe of the nozzle, and 11 indicates the spark plug.

The present invention is constructed as described above, and when in use, a mixed gas of fuel and primary air is injected into the nozzle 1, ignited and combusted by the plug 11 in the inner cylinder 4, and then released from around the flame. Next air is sent. and crater 3
In addition, tertiary air is injected from the surroundings. In this three-stage air supply, each air pressure is 400 to 900 mm for primary air, and 50 to 150 mm for secondary air.
mm pressure.

The pressure of tertiary air is set at 150 to 300 mm.

If the present invention is implemented in this manner, the flame is surrounded by secondary air and tertiary air supplied from the surroundings, so the flame is less likely to come into direct contact with the inner surfaces of the crater 3 and the inner cylinder 4, and the burner is prevented from burning out. few. In particular, the ejection of tertiary air not only narrows the flame and allows people to reach far away, but also completes combustion, blows off carbon that has adhered or is about to adhere to the crater 3, keeps the burner clean, and prevents combustion. It has the effect of completely increasing the durability of the burner.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional product, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1 Nozzle 2 Combustion cylinder 3 Crater 4 Inner cylinder 5 Air supply pipe 6 Air chamber 7 Air chamber 9 Fuel supply pipe 10 - Next air supply pipe Patent applicant Kawakami Ceramics Co., Ltd. Patent attorney Furu 1) Tsuyoshi Keiji 11 Figure

Claims (1)

[Claims] The fuel is injected together with the next air to the nozzle (+), and the combustion tube (
2) ignite combustion in the combustion tube (2) and open the crater (3)
), a porous inner cylinder (4) surrounding the flame is provided in the combustion cylinder (2),
The outside of the air chamber (6) is connected to the air supply pipe (5), forming a secondary air supply passage that penetrates the peripheral wall of the inner cylinder (4), and the tip of the combustion cylinder (2) is provided with a porous inner cylinder. An injection burner characterized in that an air chamber (7) is formed outside of (4) and a tertiary air supply path is provided to send compressed air from the surroundings to the crater (3).