JPS5932806Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a liquid fuel combustion device used as a reflective oil stove or the like.

This type of combustion device has a fire pan formed at the upper edge of the wick guide cylinder into which the lamp wick is fitted so as to be movable up and down, and a combustion cylinder with a double-tube structure is mounted on the fire pan, so that the lamp wick can be moved during combustion. It is designed to be placed in front of the fire pan to ignite and burn.

When the lamp is extinguished, the lamp is normally extinguished by lowering the wick into the wick guide tube and positioning it in the low-temperature region.

In other words, combustion continues in the combustion tube, but when extinguishing a fire, the wick is moved from its high temperature region to a low temperature region in the wick guide tube, and the cooling effect of the low temperature region promotes extinguishment.

The faster the time required for extinguishing the fire, the better it is in terms of safety and in suppressing odor generation, but in the past, the combustion tube was mounted directly on the fire pan of the wick guide tube. Heat from the tube is conducted to the wick guide tube, making it difficult to properly cool the wick when it is pulled down, prolonging the extinguishing time, and causing problems both in terms of safety and the generation of odors. was there.

For this reason, this idea supports the combustion tube through a porous insulating material, and uses the insulating effect of the insulating material as well as the cold air that flows in through the fine pores of the insulating material to quickly extinguish the fire. The present invention aims to provide a liquid fuel combustion device with a

An embodiment of this invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a wick guide tube, which is formed of an inner tube 2 and an outer tube 3, and a lamp wick 4 is fitted between the inner and outer tubes 2 and 3 so as to be vertically movable.

The lamp wick 4 is immersed in a fuel reservoir (not shown) formed at the lower end of the wick guide tube 1 and sucks up the fuel.

In addition, a fire pan 5 having a dish-shaped cross section is formed on the upper edge of the core guide cylinder 1 by the inner cylinder 2 and the outer cylinder 3, and furthermore, the inner cylinder 2
An end plate 6 is integrally formed on the upper end surface of the holder, and a plurality of relatively large diameter ventilation holes 7 are bored in the end plate 6.

Reference numeral 8 denotes a combustion tube mounted on the fire pan 5 of the core guide tube 1, and this is formed into a double-tube structure consisting of an inner flame tube 9 and an outer flame tube 10 that overlaps concentrically with the outer periphery of the inner flame tube 9.

These inner flame tube 9 and outer flame tube 10 each have a large number of small-diameter ventilation holes 11, 12, etc. on their circumferential surfaces.
A combustion part 13 is formed between the circumferential surfaces thereof, and the upper end of the lamp wick 4 is located in the lower part of this combustion part 13.

The inner flame tube 9 is provided with a guide plate 15 at a slightly lower portion thereof and a rectifying plate 16 at its upper end surface, each of which has a plurality of ventilation holes 17..., 18... is drilled.

A heat dissipation coil 19 is disposed at the upper end of the combustion section 13 formed by the inner and outer flame tubes 9 and 10, and a heat dissipation net 20 is further placed above this, and a protection tube 21 is provided on the outer periphery of the outer flame tube 10. It is fitted.

Note that 22 is a rectifying guide plate attached to the upper surface of the rectifying plate 16, and 23 is a cross pin that integrates the inner flame tube 9, the outer flame tube 1o, and the protection tube 21.

The fire pan 5 supports the combustion tube 8 configured in this manner.
has a pair of ventilated porous insulation 24 along its bottom surface.
．． 24 are provided, and the combustion tube 8 is supported via these heat insulating materials 24 and 24.

One of these heat insulating materials 24.24 is located on the inner circumferential side of the fire pan 5 and supports the inner flame tube 9 of the combustion tube 8, and the other is located on the outer circumference side of the fire pan 5 and supports the outer flame tube 10. The lamp wick 4 is moved up and down through the space between these heat insulating materials 24 and 24.

Next, the effect will be explained.

First, the lamp wick 4 is pushed up via an operating body (not shown) so that its upper end faces the fire pan 5, and is ignited to start combustion.

This combustion occurs from the lower end of the protection tube 21 and each ventilation hole 7 of the core guide tube 1 to each ventilation hole 1 of the inner and outer flame tubes 9 and 10.
1..., 12...... sequentially to the combustion section 1.
This is continued by combustion air flowing into 3.

When the combustion temperature rises, each vent 11...
・、12・・・・・・

The combustion air flowing in from 18... is consumed and completely combusted, and the area expands to the entire combustion section 13, and the heat radiation coil 19 and the heat radiation net 20 become red hot.
Transition to steady combustion.

On the other hand, when extinguishing a fire, the wick 4 is lowered as shown in FIG.
It will be lowered in time.

Although the combustion tube 8 is heated to a considerably high temperature by the above-mentioned combustion,
This combustion tube 8 is supported by the core guide tube 1 through the heat insulating material 24, 24, so that heat conduction to the core guide tube 1 is suppressed, and the core guide tube 1 is maintained in almost its original low temperature state. be done.

Therefore, as the lamp wick 4 is lowered, it moves to a low temperature region where the difference is considerably large.

In addition, as the lamp wick 4 is lowered, the low-temperature air around the outside is transferred to the porous heat insulating material 24, as shown by the arrow in FIG.
It flows between the inner and outer cylinders 2 and 3 from each of the 24 fine holes.

In this way, the lamp wick 4, which is the combustion source, moves to the low-temperature region, and the cold air from the outside flows into it, thereby promoting extinguishing and quickly achieving complete extinguishment.

As explained above, according to this invention, a porous heat insulating material is provided in the fire pan, and the combustion tube is mounted and supported through this heat insulating material, so that the conditions for extinguishing the fire can be adjusted. It can be quickly formed and extinguished quickly, and therefore has the practical effect of being superior in terms of safety and minimizing the odor generated during extinguishing.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of this invention, FIG. 2 is a cross-sectional view showing an enlarged main part thereof, and FIG. 3 is a perspective view showing a porous heat insulating material on the same side. 1... Core guide tube, 4... Light wick, 5...
...Fire pan part, 8... Combustion tube, 24...
...Porous insulation material.

Claims (1)

[Scope of utility model registration request] A fire pan is formed at the upper edge of the wick guide cylinder into which the lamp wick is fitted vertically, a combustion tube is mounted on the fire pan, and the lamp is combusted with the lamp facing the fire pan. 1. A liquid fuel combustion device characterized in that a porous heat insulating material is disposed in the part, and the combustion cylinder is mounted and supported through the heat insulating material.