JPS586310A - Combustion apparatus for liquid fuel - Google Patents

Abstract

PURPOSE:To inhibit tar substance from forming on a combustion wick, by providing recesses to the parts of an atomizer element, corresponding to the pores of a burner of double cylinder type, in a combustion apparatus in which liquid fuel is sucked to be atomized by an atomizer element by its capillary action. CONSTITUTION:Recesses B are provided, respectively, to the parts of a fuel atomizer part 3 in the upper part of a combustion wick 1, corresponding to the pores 5 of an outside flame cylinder 4, in a combustion apparatus to which upper part of fuel sucking wick 2, being made of polypropylene cloth and the like, a wick 1, as an atomizer element, is provided in continuation, and the combustion wick 1 is exposed to a combustion chamber A which is formed between an inside and an outside flame-cylinders 7 and 4. With such as arrangement, the distance of a flame 9 and a recess B between the surface of a wall can be shortened and be made to be of nearly equal length, when a flame 9 is formed on a pore 5, so that the temperature distribution on the side surface of a fuel atomizer part 3 can be uniformed. Accordingly, fuel F is atomized nearly uniformly, as a result, formation and accumulation of tar substance on the wick can be inhibited, and stable combustion can be assured for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel combustion device that sucks up a liquid solvent by the capillary phenomenon of a vaporization element, vaporizes it from the tip of the vaporization element, and burns it. An object of the present invention is to provide a liquid fuel combustion device that suppresses the generation and accumulation of tar-like substances in a vaporizing section and maintains stable combustion for a long period of time.

The liquid fuel is sucked up by the capillary action of the combustion wick, and the liquid fuel is vaporized and combusted from the tip portion exposed in the vaporization chamber of the combustion wick, that is, from the surface of the combustion vaporization section.
So-called liquid fuel combustion devices of the one-shot vaporization type are widely used in oil stoves, oil stoves, and the like. In this type of combustion device, since the fuel vaporization section is exposed to a high humidity and oxygen-containing atmosphere, part of the fuel contained in the fuel vaporization section during combustion is caused by oxidation double polymerization reaction, etc. The phenomenon of turning into a tar-like substance and accumulating it in the fuel vaporization part easily occurred. In particular, if trace amounts of high-boiling components are mixed into the fuel (for example, when machine oil, diesel oil, salad oil, etc. are mixed into kerosene), or some of the fuel components are altered (for example, when kerosene is heated for a long period of time, If the product contains oxides, peroxides, resins, etc. that are generated when stored under direct sunlight, the generation and accumulation of the tar-like substances will significantly increase.

When this tar-like substance accumulates in the fuel vaporization section, the capillary tubes on the surface or inside the fuel vaporization section are blocked, thereby inhibiting fuel suction and vaporization. This has caused problems such as frequent generation of carbon oxide. #1-1 It takes a very long time to reach stable combustion because the tar-like substances cause the fuel vaporization section to increase in humidity, which prevents the fuel vaporization section from increasing. ．． During this period, stable transient conditions increase the generation of odors, soot, and carbon oxides.In addition, tar-like substances or the combustion wick and the metal parts that support it increase the generation of odors, soot, and carbon oxides. There was also a dangerous situation in which if the mechanical operation of the combustion wick was not possible, it would be impossible to extinguish the fire by leaving the wick in place.

The present invention Q" In order to eliminate these conventional drawbacks, the production and accumulation of tar-like substances is suppressed. An example of the present invention will be explained below with reference to the accompanying drawings.

In No. 11), 1 is a combustion wick used as an example of a vaporizing element, which is a porous material made of solicar alumina ceramic fibers (50:602 weight ratio of solicar: alumina) bonded with a soli force-based binder. It has a cylindrical shape. 2C "suction" core made of polypropylene cloth,
It is connected to the combustion wick 1. 3kj combustion wick 1 fuel vaporization 7? l(So, when installed in the combustion device, the combustion tll + chamber AV
This is the part that exposes the IC. A recess B is formed on the side surface of the fuel vaporization part 3 at a position corresponding to the pore 5 of the outer flame R14.
ing. 6 is a core outer cylinder, a Td inner flame cylinder, and 8 is a core inner cylinder.

In the above configuration, the liquid fuel 1 is pumped up from the wick 2 to the combustion wick 1-1 during suction, and is vaporized from the surface of the combustion vaporization section 3. Here, we will compare the effects of this embodiment and the flow of fuel with the conventional example (described in detail in ~).

Fig. 2 shows a Q signal 1 with respect to an outer flame tube 4 in a conventional liquid fuel f-1 combustion device, in which the fuel oil vaporizer 3 has parallel sides.
Figure 3 shows one example of liquid splint 1 combustion 1: +11. In the fuel vaporizing section 3 of the device, the recesses B are hollow corresponding to the pores 5 of the outer flame tube 4, and their cross sections are shown.

That is, fuel F (solid arrow) is sucked into the combustion wick 1 and vaporized from the surface of the fuel vaporization section 3. At this time, in the conventional example, as shown in FIG. 2, the sea urchin fuel F is vaporized in a larger amount than in the vicinity of the pores 5 in the first vaporization section 3. However, trace amounts of high-boiling components and altered components in (7) are not easily vaporized1~, so they accumulate in the part farthest from the pores17, and are affected by temperature and oxygen to become tar1) ζ substance T. Change 12 (white arrow) accumulated.

In addition, a flame 9 is attached to the 1st pore 5, and the temperature distribution on the surface of the fuel vaporization section 3 (1111) becomes uneven. Tar accumulates in distant parts.

However, as shown in FIG. 3, if a recess B is provided in the fuel vaporization section 3 to correspond to the pore 6 of the outer flame cylinder 4, when the pore 6 is attached to the flame 9, the flame 9 and the recess The distance to the wall of B is shortened, and the distances are approximately equal, so
The temperature distribution on the side surface of the fuel vaporization section 3 becomes uniform, the fuel F is vaporized almost uniformly, and the tar-like substance T is also extremely difficult to accumulate, making it impossible to maintain stable combustion for a long period of time. The liquid fuel combustion device of the present invention prevents the generation of tar-like substances by forming four parts in the portions corresponding to the pores of the double-tube burner of the vaporizing element.

Suppression of accumulation - 1. It is possible to maintain stable combustion over a long period of time.

[Brief explanation of drawings]

FIG. 1: Liquid fuel fuel according to an embodiment of the present invention
: A partial sectional view of the device, FIG. 2d is an explanatory diagram of the operation of the conventional example, and FIG. 3 is an explanatory diagram of the operation 111 of an embodiment of the present invention. 1... Combustion, wick (vaporizing element), 3...
Fuel vaporization section, 4... Outer flame cylinder, 6... Stoma, 7...
...Inner flame tube, 9...-flame.

Claims (2)

[Claims] (1) At least a part of the vaporizing element is protruded into a multi-tubular burner having many holes through which combustion air is ejected, and a recess is formed in a portion of the vaporizing element corresponding to the pores of the multi-tubular burner. A liquid fuel combustion device characterized by ~. (2) The liquid fuel combustion device according to claim 1, wherein the vaporized element f- is mainly composed of a porous body made of silica-alumina ceramic.