JPS60101426A - Liquid fuel combustion apparatus - Google Patents

Abstract

PURPOSE:To completely shut out offensive odor at the quenching time, by completely quenching flame in a moment at the same time when a quenching operation is completed, by providing a shut-off device to the wick elevating part of the titled apparatus. CONSTITUTION:A shutter 12 as a shut-off device is designed to shut off the inside space of a wick elevating part 4 after a wick is descended. When the flame is going to be quenched, a wick 3 is descended down to the quenching position, and then the shutter 13 is moved to shut off the part 4. That is, the upper end of a wick is shut off immediately after the wick is descended, so that the substance to cause offensive odor is prevented from moving to the position where it can satisfy the condition to produce offensive odor. On the other hand, a passage to supply fresh air is formed in the space where the top of a wick elevating part 4 contacts with the bottom of a wick tray. With such an arrangement, odor caused by the substance cannot stay in the space, because the pressure of steam from fuel gas is lowered, the gas is prevented from condensing again, and evaporation of deposited fuel around the part 4 can be promoted, Accordingly, both complete quenching of flame in a moment and complete deodorization at the quenching time can be accomplished at the same time in a liquid fuel combustion apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to improvements in liquid fuel combustors used for heating, cooking, and other applications.

Conventional Structures and Problems Oil stoves, oil stoves, and the like are widely used as liquid fuel combustors for heating, cooking, and the like. However, these liquid fuel combustors have the disadvantage of emitting a strong odor when extinguished, and cannot be said to provide satisfactory comfort.

Another disadvantage is that even if you lower the wick and extinguish the fire, a small flame remains at the bottom of the combustion chamber for a while.
There was a drawback that the fire was completely extinguished only after that, and it was not satisfactory in terms of safety.

Conventional fire extinguishing methods can be broadly classified as follows.

(1) A method of extinguishing a fire by pulling the wick into the wick sliding part (the method considered to be the earliest) (2) A small hole or gap is opened relatively above the wick sliding part, and the wick is extinguished. Method of introducing air from outside when drawn into the sliding part (3) Method of lifting the combustion cylinder and closing the saucer part.

(4) A method of retracting the core and closing it below the saucer part.

However, although there are some products that have the effect of completely extinguishing the fire instantaneously or in a relatively short time, there is no product that has been able to simultaneously completely extinguish the fire instantly and completely eliminate the odor during extinguishing.
However, there were still some cases in which improvements introduced new drawbacks.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a liquid fuel combustor in which the above-mentioned two drawbacks are completely improved in practical terms.

Components of the Invention The present invention is provided with a closing device that closes off the space between the wick vaporization section and the combustion chamber after the wick is lowered for extinguishing, and a solid surface that connects to the combustion chamber and comes into contact with the fuel in a liquid or gaseous state during combustion. The combustion chamber is provided with an air passage leading from the outside to the combustion chamber via a space in which at least a portion of the combustion chamber is in contact with the combustion chamber.

DESCRIPTION OF EMBODIMENTS In FIG. 1, 1 is a fuel tank, 2 is a core guide cylinder, and 3 is a fuel tank.
HahayLamp wicks with a straight vaporizer at the tip, 4 and 6
are a core sliding part 4 and a saucer part 6 that constitute a part of the core guide tube.
It is. 6 is a pre-combustion plate, 7 is a post-combustion plate, and 8 is a red-hot combustion plate, each of which has a large number of small pores, and the internal space is a combustion chamber 9.
It is configured as follows.

10 is a front plate, 11 is a rear plate, and 12 is a glass plate, all of which constitute an air chamber on the outside of each combustion plate 6, 7, 8 surrounding the combustion chamber 9. 13 is a shutter, and 14 is a shutter guide portion that constitutes a part of the core guide tube 2.

Note that the shutter 13 is configured to be able to close the internal space of the sliding portion 4 after lowering the core while being guided by the shutter guide portion 14 . 15 is a discharge port.

``The two-dot chain line indicates the height position of the tip of the lamp wick 3 when extinguishing the fire.

FIG. 2 is an enlarged view of the main part of FIG. M1, and shows the shutter guide portion 14 at least during combustion. This indicates that an air passage is formed from the outside to the combustion chamber via the saucer part relatively above the core sliding part, and 13a is a plurality of air passages provided in the shaft and 7ter 13 for this purpose. raised protrusion, 14
A indicates a plurality of small holes provided in the shutter guide portion 14 for the same purpose, and indicates that external air flows in the direction of the arrow due to the suction force generated by combustion in the combustion chamber.

Next, the operating status of the above embodiment will be explained.

When igniting, the shutter 13 is opened and the wick is raised, and a igniter (not shown) ignites one point on the wick 3.The flame first spreads from the ignited point to the entire tip of the wick, and as time passes. The amount of combustion increases accordingly, and eventually stabilizes at a steady combustion amount.

Air is supplied to the combustion chamber 9 from a large number of pores in each combustion plate 6, 7.8 by suction force due to natural convection. The red-hot combustion plate 8 becomes red hot during combustion and radiates a large amount of radiant energy, which is supplied to the outside via the glass plate 12, and the combustion exhaust gas supplies convective heat to the outside from the exhaust port 16. When extinguishing a fire, the lamp wick 3 is first lowered to the extinguishing position and the shutter 13 is closed.

In addition, it is effective to measure practical convenience by combining a mechanism that links the operation of the lamp wick 3 and the shutter 13, and a mechanism that automatically extinguishes fire by detecting vibrations, falls, etc., in addition to manual extinguishing. Therefore, it is possible to implement the invention without impairing the essence of the invention.

Conventionally, the cause of odors and embers during extinguishing was thought to be that fuel vaporization from the wick vaporizer continues without rapidly stopping even after the wick is lowered, and vaporization stops only after a while.

In other words, the vaporized gas from the wick that continues after the wick is lowered burns with an unstable small flame at the lower end of the combustion chamber, resulting in embers. It is discharged as an incompletely oxidized component that has an odor, or the vaporized gas after complete extinguishing is incompletely oxidized at the high temperature of the combustion part, resulting in the above-mentioned odor component.
It has been said that being exposed to ul is the cause. Although this kind of thinking is reasonable, it has been revealed in the process of the present invention that it is one-sided and insufficient.

That is, it can be pointed out that in the present invention, in addition to the conventional concept described above, a satisfactory solution to the conventional drawbacks cannot be obtained unless the following causes are overlooked. During combustion, a small amount of liquid fuel exists on the inner surface of the wick sliding part and the saucer part, and this fuel is burned at a reduced level due to the high fuel vapor pressure in the surrounding gas phase. However, by lowering the wick to the extinguishing position, the amount of fuel gas that vaporizes from the wick is greatly reduced, if not completely eliminated, so the conditions of the gas phase surrounding the adhering fuel described above are This is a cause of ember and odor generation due to the drop in fuel vapor pressure and increase in air concentration, resulting in sudden changes in conditions that allow vaporization or combustion.

In contrast, in the present invention, it has been revealed for the first time that there are two different generation mechanisms for the substances that cause embers to eliminate the odor during extinguishing, which has been a drawback in the past, and an effective method for improving the circle generation mechanism has been developed. This is what we provide. The first generation mechanism is a shutter that closes the upper part of the tip of the core immediately after the core is lowered, and this causes the causative substance caused by the first generation mechanism to move to a position where the conditions that lead to the generation of defects are satisfied. may stop moving. Next, for the second generating mechanism, an air passage is configured to supply external air during combustion to the space where the relatively upper part of the core sliding part and the solid surface such as the inner surface of the saucer part are in contact with each other. By lowering the vapor pressure of the fuel gas in the area, preventing recondensation (liquefaction) of the fuel gas, or promoting vaporization of the adhering fuel, conditions were created that did not allow the presence of the causative substance.

Furthermore, when a closing device is added as a solution to the first generation mechanism, the shutter, shutter guide, etc.
However, by forming the air passage 414, it is possible to solve the problem including the above-mentioned new defect increasing factor.

Effects of the Invention As described above, the present invention prevents the presence of fuel due to dew condensation on a part of the fire pit, so the fire is completely extinguished instantly as soon as the fire extinguishing operation is completed, and the odor is completely eliminated when the fire is extinguished. It becomes odorless.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a liquid fuel combustor according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the main part of FIG. 1. 3...Light wick, 9...Combustion chamber, 13...
...Shutter, 14...Shutter guide section. Name of successor: Patent attorney Toshio Nakao and one other person Figure 1

Claims (1)

[Claims] (1) A wick that sucks up fuel and vaporizes it; a wick up-and-down device that raises the wick when igniting and lowers it when extinguishing;
The combustion chamber into which the wick vaporizing part looks into during combustion, the closing charge that closes the space between the wick vaporizing part and the combustion chamber after the wick is lowered during extinguishing, and the fuel that communicates with the combustion chamber and contacts the fuel in a liquid or gaseous state during combustion. A liquid fuel combustor comprising: a solid surface; and an air passage communicating from the outside to a combustion chamber via a space in which at least a portion of the solid surface is in contact.・(2) is a liquid fuel combustion device according to claim 1, characterized in that the wick of the vaporization section is provided with a straight line shape.