JPS6252217B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wick type oil combustor.

Conventionally, in this type of oil combustor, as shown in Fig. 4, an opening B is provided in the wick housing wall A to be opened when the wick is lowered, and a small chamber D with a small hole C is provided around the outer periphery of this opening B. You can see things. When the wick is lowered (extinguished), the gas from the wick E mixes with the air from the small hole C in the small chamber D, causing instant combustion (explosive combustion), and the blast causes the wick to be ejected.
The flames that were burning in the upper part were blown out,
At this time, the combustion in the small chamber D instantaneously propagates to the unused gas above the wick E, temporarily causing an abnormal standing flame, and at this time, due to the lack of fresh air, soot is generated. There was a problem.

As a result of dozens of experiments, it was determined that this was because the volume inside small chamber D was large and the explosion energy was too large.

Therefore, we considered reducing the volume of the small chamber D to lower the explosion energy, but since the gas generated when extinguishing the fire will explode explosively in the wick storage space F other than the small chamber D, the result will be the same as above. The results were great. In other words, in the end, there is a large amount of gas generated during extinguishing the fire, and all of it is combusted explosively, which is thought to have caused the above-mentioned problems.

The present invention was made in view of these points.
This eliminates the above-mentioned drawbacks of the conventional method by reducing the amount of unburned gas that is explosively combusted.

An example of this will be explained below with reference to the drawings.
1 is a tank, 2 and 3 are core-accommodating cylindrical walls provided upright in the tank 1, and the outer core-accommodating cylindrical wall 3 is provided with a slit-shaped opening 4 (which may be a small hole). During combustion, this opening 4 is closed by a wick 5 disposed between the inner and outer wick-accommodating cylinder walls 2 and 3,
When the fire is extinguished, the lamp wick 5 is lowered and opened as shown in the drawing. Reference numeral 6 denotes a small chamber provided on the outer periphery of this opening 4, in which the core housing cylinder wall forming members 3a, 3b
It is formed by a combination of.

Reference numeral 7 denotes a ring-shaped porous member provided inside the small chamber 6 of the opening 4, and in this embodiment, it is formed of a mesh wire gauze. This porous member 7 has an opening 4
A small chamber 6 is provided at a portion slightly away from the opening 4 so as to be divided into chambers 6a and 6b on the opposite side, and is movable in the direction toward and away from the opening 4. There is. 8 is the small room 6 above.
It is a small hole provided on the outer periphery of the

In the above configuration, when the lamp wick 5 is lowered, the opening 4 is opened. As a result, most of the unburned gas that continues to evaporate from the lamp wick 5 flows into the small chamber 6 from the opening 4 through the porous member 7. As the wick 5 descends, the flame that descends into the wick storage space 9 propagates to the unburned gas in the small chamber 6.
The unburned gas in the small chamber 6 burns explosively and extinguishes the fire. At this time, it is only the unburned gas between the opening 4 and the porous member 7 that is explosively combusted, and the explosion energy is relatively small and does not lead to the generation of abnormal flames or soot. (Some amount occurs, but it is not noticeable.) In other words, in the embodiment of the present invention, the unburned gas in the chamber 6a separated by the porous member 7 on the opposite side from the opening 4 is transferred to this unburned gas. Since the flame propagation is blocked by the porous member 7 and explosive combustion is suppressed, all of the unburned gas generated does not explode explosively and lead to standing flames, soot, etc. as in the conventional case. .

This is the same when extinguishing a fire by falling, but in this case, the unburned gas in the wick storage space 9 gathers in the lower part of the small chamber 6 due to the equipment falling, so the explosion energy described above is not sufficient to extinguish the fire. However, in the case of the present invention, as the instrument falls over, the porous member 7 moves downward as shown in FIG. 3, increasing the area of the chamber 6a between the opening 4 and the porous member 7. Therefore, the explosion energy generated in this area is large, and the possibility of a fire extinguishing error is extremely low. Since the explosion energy is large at this time, there are concerns about problems such as abnormal flame formation, but the explosion and combustion in this case is local, and the explosion energy is dispersed in the circumferential direction of the small chamber 6 and the core accommodation space 9. It does not lead to abnormal inflammation.

By the way, in the above embodiment, a wire mesh was used as the porous member 7, but any material such as a punched plate or a metal sponge plate may be used.

As is clear from the above description of the embodiments, the present invention prevents the explosive combustion of all unburned gas during normal fire extinguishing by using a porous member provided in the small chamber, and prevents the generation of abnormal standing flames and soot. In addition, by making the porous member movable, the explosion energy can be locally increased, ensuring fire extinguishment in the event of equipment falling down, and at the same time preventing abnormal flames and soot generation. etc., the effects are great.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an oil combustor according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the essential parts, Fig. 3 is a sectional view taken along the line A--A in Fig. 1 when the equipment falls over, and Fig. 4 The figure is a sectional view showing a conventional example. 3... Core housing cylinder wall, 4... Opening, 5... Light wick,
6... Small chamber, 7... Porous member.

Claims (1)

[Claims] 1 An opening is provided in the wall of the wick storage cylinder that is closed by the wick during combustion and opened when extinguishing, and a small chamber is formed around the outer periphery of this opening, and a porous member such as a wire mesh is placed inside the small chamber of the opening. The oil combustor is characterized in that the porous member is movable.