JPS59142317A - Burner - Google Patents

Abstract

PURPOSE:To attain shortening of flame length, stabilization of flame and reduction of combustion sound by the operations to promote the fine division, despersion and mixture of the fuel, by providing an inverse conical evaporating cylinder and air holes formed by a simple punching operation at the side wall of the evaporating cylinder. CONSTITUTION:When fuel is ignited by an igniter 9, the fuel receives air in a large quantity which is supplied for fine division, and is instantaneously and completely burnt. More specifically, since an evaporating cylinder 1 has an inverse conical shape, air supplied to the fuel group to be sprayed is supplied downwardly. Since air holes 2 provided for fine division are directed downward, the evaporating cylinder 1 has smaller diameters at the lower parts and larger diameters towards upper parts, and further an auxiliary combustion cylinder 5 is provided upright with the same diameter, with respect to the evaporating cyliner 1, the auxiliary cylinder 5 is relatively throttled toward the upward. Hence, in an evaporating chamber A the mixing operation is promoted, and at the parts above the tip end of the auxiliary cylinder 5 the gaseous mixture is effectively supplied to the evaporating cylinder. Therefore, fine division, dispersion and mixing are promoted at parts of air holes, and stable blue flame 14 is formed by the downward air injection.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a compact combustor.

Conventional structure and its problems Conventionally, as shown in Fig. 1, the air holes 2 formed in the vaporization tube 1 were required to generate a swirling flow in order to promote vaporization, mixing, and combustion. The cutting and raising process was expensive. However, the opening area of each air hole cannot be made large due to the cutting and raising process, and the amount of swirling air that is ejected is large. Although the mixing and combustion are good, it is not possible to achieve homogeneous fine-divided mixing and stability. Because of the lack of flame-holding effect, the combustion flame was long and, in this type of burner, the combustion noise was high.

Purpose of the Invention The present invention solves the problems of the prior art, and uses an inverted conical vaporizing cylinder and air holes that are simply punched out in its peripheral wall to promote the diffusion and mixing of finely divided flames. The purpose is to shorten the length, stabilize flame holding, and reduce combustion noise.

Structure of the Invention The present invention provides a combustion device using petroleum or the like as fuel, in which a carburetor is provided in the center, an auxiliary combustion tube having a fuel port is provided on the outer periphery of the vaporization tube, and a burner body is provided on the outer periphery of the auxiliary combustion tube. A nozzle and an igniter are provided in a portion facing the fuel port, a burner tube is provided which communicates with the air duct together with the vaporization tube, and the vaporization tube is shaped like an inverted cone.

Description of examples An embodiment of the present invention will be explained with reference to FIG.

Reference numeral 1 denotes a vaporizing cylinder, which has a plurality of air holes 2 formed by simple punching in its upper and lower peripheral walls, the lower part of which communicates with an air passage 3, and is erected approximately at the center of the burner body 4. Reference numeral 5 denotes an auxiliary combustion cylinder, which is located lower than the vaporizer cylinder 1 and on the outer periphery, and has a fuel port 6 on the minus side, and a plurality of recirculation lowers on the lower peripheral wall. 8
is a pressure pump (not shown) with a nozzle that sprays liquid fuel.
communicate with.

Note that the nozzle/I/8 can also supply gaseous fuel and can be shared. 9 is the igniter, 10 is the burner cylinder, and the primary air cylinder 11
Equipped with: A combustion ring 12 is provided in the burner body above the vaporizer cylinder 1. 13 is a heat insulating material 14 is a combustion flame,
16 indicates the combustion gas recirculation flow effect. People are in the vaporization chamber, B
is a recirculation path, and C is a combustion chamber.

The operation will be explained according to the above configuration description. First, ventilation duct 3
The combustion air is supplied into the burner body 4, and then the nozzle/I
/8 When the fuel is sprayed toward the vaporization tube 2 and the igniter 9 ignites the fuel with high-temperature heat, the vaporization tube 2 is subdivided through a plurality of air holes 2 formed in the upper and lower peripheral walls. It receives a large amount of air supplied to it and instantly produces a quiet blue flame, resulting in complete combustion. That is, since the air supplied to the fuel group to be sprayed has the shape of an inverted conical vaporizer cylinder,
The air holes 2 arranged in fine divisions are supplied downward, the lower part of the carburetor pipe 2 has a small diameter and gradually becomes larger, and the auxiliary combustion pipe 6 is connected to the carburetor pipe 1. Since they are installed upright with the same diameter, the mutual relationship becomes narrower as you move toward the top, so in the vaporizer, the mixing action is downward and the mixing action is promoted, and the tip of the auxiliary combustion cylinder 5 In order to effectively supply the mixed gas to the vaporizing cylinder 1, very effective fine-division diffusion mixing is promoted in the portion of the plurality of air holes 2, and downward air jets prevent flame stabilization. A stable blue flame 14 can be formed without promoting stability. Moreover, unlike the conventional example, the cross-sectional area of each air hole is small, making it possible to subdivide the flame.Furthermore, since the air jet is close to laminar flow, combustion noise, especially low-frequency sound, can be suppressed, making it quiet. It is capable of complete combustion of blue flame. On the other hand, when extinguishing a fire by effectively performing the recirculation flow action 15 of the combustion gas by jetting downward air and promoting the combustion action, the solenoid valve (not shown) between the pressure pump (not shown) and the nozzle/I/8 is cut off. Combustion will stop instantly.

Effects of the Invention ■ As is clear from the explanation of the structure and operation above, the carburetor tube is shaped like an inverted cone, and a plurality of simply punched air holes are arranged, and the auxiliary combustion tubes are cut into the carburetor tube and stand with the same diameter. Due to this structure, fuel vaporization and mixing, flame stabilization, and combustion gas recirculation are effectively carried out to the combustion chamber, recirculation path, and vaporization chamber, resulting in a quiet, stable, short flame. Complete combustion is carried out by flame.

■ By shortening the combustion flame, the shibana body becomes more compact.

■ Machining of the air holes in the vaporizer cylinder is simple and costs are reduced.

[Brief explanation of the drawing]

FIG. 1 is a W cross-sectional view showing a conventional example, and FIG. 2 is a vertical cross-sectional view of a combustion apparatus showing an embodiment of the present invention. 1... Vaporizer tube, 2... Air hole, 3...
...Air duct, 4...Bar tip, 5...
Auxiliary combustion tube, 6... Fuel port, 8... Nozzle nozzle, 9... Igniter, 12... Combustion ring.

Claims (1)

[Scope of Claims] ■ A carburetor tube with a plurality of air holes perforated in its peripheral wall is erected in the center, an auxiliary combustion tube having at least a fuel port is disposed on the outer circumferential side of the vaporization tube, and the auxiliary combustion tube has a plurality of holes. A burner body having a combustion ring on the outer periphery is disposed, a nozzle and an igniter are provided in a portion facing the fuel port of the auxiliary combustion cylinder, and a burner cylinder communicating with the air duct is arranged together with the vaporization cylinder, so that the vaporization cylinder is Combustion device configured as an inverted cone. (2) The combustion device according to claim 1, wherein the air holes are simply punched holes in the circumferential wall surface of the vaporizing cylinder.