JPS6096834A - Kerosene combustion device - Google Patents

Abstract

PURPOSE:To positively shorten a time needed to extinguish in an abnormal condition for thereby improving a safety, by providing a wick outer cylinder with a small chamber which communicates with a wick containing space. CONSTITUTION:A wick outer cylinder 4 comprises an upper cylinder metal fitting 8 and a lower cylinder metal fitting 9. The lower cylinder metal fitting 9 has a few projections 6 which forms a marginal clearance A relative to a wick 3. The projections 6 are projected in a tapered fashion to avoid interference with the up-and-down movement of wick 3 for thereby allowing for the smooth movement of wick 3 in the vertical direction. The lower cylinder metal fitting 9 comprises a combination of lower inner cylinder metal fittings 12 and 13, forming a small chamber 11 which communicates via an opening 10 with a wick containing space 22. At the same time, the lower cylinder metal fitting 9 serves to press-fit the upper end portion of lower inner metal fitting 13 with the opening 10 defined therethrough with the lower end portion of upper cylinder metal fitting 8 in an abutment fashion with the projections 6. In this way, a fire can be extinguished within 100-300sec with an offensive smell suppressed in a normal extinguishing time, while simultaneously preventing the formation of tar.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to oil combustors of the wick type.

Problems with the conventional Nosei Shichizo Generally, in this type of oil combustion, a small hole 32 is provided in the outer core guide tube 34 as shown in FIG. It is known that it can extinguish a fire.

In such an oil combustor, the part where the small hole 32 is provided is made large in diameter 31 to form a small gap G between it and the lamp wick 33, and during combustion, the air flowing in through the small hole 32 causes the fire pan 35 to This is to prevent the cool from adhering to the fire pan 35 by conveying the steam fci to the area as shown by arrow H. However, in such a configuration, there is always a gap G in the small hole 32. Even if the wick 33 suddenly falls, the negative pressure generated by it is small and the air flowing in from the small hole 32 is insufficient, so in some cases Sometimes the fire was not extinguished within 10 seconds.

In addition, as a method for shortening the extinguishing time, as shown in FIG. 6, a small chamber 41 is formed on the outer periphery of the outer core guide tube 44, and when the wick is lowered, unburnt gas is guided into this small chamber 41, and the air,! −
It is known that the mixture is mixed, then combusted and exploded, and the resulting blast extinguishes the fire. In the case of the structure shown in Figures 7 and 8, a small gap I is provided between the lamp wick and a small hole 45 is provided to communicate with this gap. Regarding fj/j, since the opening L146 of the small chamber 41 was opened when the wick was lowered (when extinguishing the fire), the fire could be reliably extinguished in a short time (instantaneous). 711 of unburned kerosene vapor generated during extinguishing, which generally takes a short extinguishing time.
There is a tendency for the fire to increase and the odor to become stronger, and when the fire is extinguished instantly, a very strong fire odor is produced. In the event of an abnormality, it is necessary to extinguish the fire instantly, even at the expense of odor, for safety reasons, but for normal use, it is preferable to use a power that produces less extinguishing odor even if it takes some time.

However, in conventional VC systems, the fire is extinguished instantly in both normal and abnormal situations, so the odor when it is normally extinguished is intense.
There was a problem that it could not withstand practical use. - The lowering position of the Mapuko wick 43 (extinguishing stroke) and the opening position of the small chamber are greatly related to the extinguishing time, and determining the position is not easy, and the setting height of the wick is different, depending on the VI device. There was also the problem that the fire extinguishing time could be longer or shorter due to different types of fires.

Purpose of the Invention The present invention has been made in view of the above-mentioned problems, and it improves safety by reliably shortening the extinguishing time in abnormal situations, extinguishing the fire within about 100 to 300 seconds under normal conditions, and reducing the smell of extinguishing. The purpose of this is to reduce the amount of carbon dioxide and prevent tar formation.

Structure of the Invention In order to achieve the above object, the present invention forms a small chamber in the core outer cylinder that communicates with the core housing space, and also provides a protrusion so as to form a slight gap between the cores, and a protrusion on the top thereof. A fire pan with a small hole is formed, and the lowering position of the lamp wick is at the upper part of the opening provided in the small chamber (1) during normal extinguishing, and at the lower part of the opening provided in the small chamber during abnormal extinguishing.

Explanation of actual feeding An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an inner core guide cylinder (hereinafter referred to as the core inner cylinder) installed upright in the center of the oil tank 2.
An outer core guide tube 4 (hereinafter referred to as a core guide tube) is attached to the Jjd wall via a core 3.

The wick 3 has its lower end penetrated into the oil tank 2 and sucks fuel into the upper part, and the wick 3 is used between the outer core cylinder 4 and the inner core cylinder 1.
The lower finger can be moved freely.

The core outer cylinder 4 consists of a metal fitting 8 and a lower metal fitting 9. There is a slight gap between the lower tube metal concrete 9 and the core 3.
It has several protrusions 6 that form JA, and when the core 3 is moved in the 1-d position, it protrudes in a tapered shape so as not to interfere with the vertical movement of the core, and the vertical movement of the core 3 can be performed smoothly. be exposed.

In addition, the lower inner tube fitting 9 is made up of a combination of lower inner tube fittings 12 and 13, and forms a small chamber 11 that communicates with the core housing space 22 through an opening 10, and the upper end of the lower inner tube fitting 13 having an opening 1o. The lower end of the two-part cylindrical metal fitting 8 is press-fitted so as to abut against the protrusion 6 shown in 11I.

The cylindrical metal fitting 8 is made of stainless steel and has an outer fire plate 5 at its two ends and a small hole 7 so as to communicate with the gap A.

The opening 10 is closed by the wick 3 when the wick 3 rises, so-called during combustion, and is normally closed by the wick 3 in the position shown in FIG. The wick position A is set at a position where the oil combustor can extinguish the fire within a time (approximately 300 seconds), which is generally considered safe if the fire is extinguished within this time. Furthermore, the wick 3 is configured to descend to the position shown at the mouth when an abnormal fire is extinguished. At this time, the opening 10 is provided at a position where it is opened.

On the other hand, the 071 core inner cylinder 1 has an inclined flange 14 with the core 3 side lowered on the upper part, and an inner fire pan 16 is attached on this inclined flange 14. There is an opening 15 between them. The inner fire pan 16 has several protrusions 17 that contact the inclined flange 14 of the core inner cylinder 1, and is attached with screws 18.

In the above configuration, when the wick 3 is raised and ignited, the oil sucked up by the wick 3 is vaporized here and the outside air <! : Mix and burn. At this time, air flows into the small hole 7 as shown by the arrow, and the stones/11 remain near the outer fire pan 5.
Steam C is transported to one side and combusted. And-
1;, Since the RQ outer fire pan 5 is made of stainless steel, heat conduction to the lower cylindrical metal fitting 9 is poor, and the temperature of the white meat of the Gaijin 11115 becomes high. Even if there is steam, it will immediately evaporate. Therefore, petroleum vapor is prevented from adhering to the outer fire pan 5 and turning into tar.

Next, in abnormal extinguishing, when the wick 3 is lowered to the mouth position, the small hole 7 and the opening 1o of the wick outer cylinder 4 are opened at the two ends of the wick 3. Therefore, first, the negative pressure generated by the core descent causes the cold outside air to flow through the small hole 7 to the core 3.
The gas flows into the second end, cools the second end of the wick 3, and suppresses the generation of unburned gas.

The air flowing in from this small hole 7 may not be sufficient to extinguish the afterflame remaining in the second part of the wick because the negative pressure generated by the drop of the wick is small, but this air flows through the opening 10. It is sufficient to enter the small chamber 11 and mix with the unburned gas in the small chamber 11 to make it a flammable region. Therefore, small room 11
The unburned gas inside the wick immediately becomes flammable as the wick falls, and the afterflame at the top of the wick ignites and combusts explosively, causing the blast to blow out the afterflame in the second part of the wick.

Furthermore, if the small chamber 11 is provided with an air hole 19 that communicates with the outside air, the unburned gas in the small chamber 11 will obtain air from the air hole 19 as well as the air from the small hole 7, and will become flammable. This has the advantage that the fire can be extinguished even more quickly.

Next, in normal fire extinguishing, the wick 3 descends to the position A,
It is configured to close the opening 10.

Therefore, the effect at the time of abnormal extinguishing cannot be exhibited, and the extinguishing does not occur in a short period of time. However, the small hole 7 in the wick outer cylinder suppresses the generation of unburned gas, and the position of the wick 3 is within the time (approximately 300 seconds) that is generally considered safe if the oil burner extinguishes within this time. It is safe because it is set in a position where it can be extinguished, and since the embers remain for the time it takes to extinguish, it has the advantage of reducing extinguishing odor because it burns the unburned gas at the top of the wick. ing.

The protrusion 6 provided on the outer cylinder 4 of the sweet core forms a gap between it and the core 3, and prevents the upper and lower parts of the core from getting caught.
lj<position i when the upper and lower inner cylinder fittings 8 and 13 are press-fitted
It also has the effect of determining "l'l".

Furthermore, in order to configure the wick lowering position in normal IL'l and abnormal conditions to be different, the +10 position of the opening provided in the lower inner cylinder fitting 13 of the outer wick cylinder 4 is set to a different height for the lamp wick. This has the advantage that the extinguishing time can be set both above and below depending on the equipment, and can be dealt with simply by replacing the lower inner cylindrical fitting 13.

1-4 Actual 1iifj Example-C is the lower tube metal concrete 9
As shown in Fig. 4, the two-part tube fitting 8
After press-fitting a into the lower cylindrical metal concrete 9a, crimping 23 in the direction of the inner I11, making the same shape as the fII 1 protrusion 6, and fitting the lower inner cylindrical metal fitting 13 together, it will be similar to the Effects can be obtained.

Effects of the invention 1. As is clear from the explanation of the iK example, the present invention suppresses the generation of unburned gas by using air from the small holes, and at the same time brings the unburned gas in the small chamber into a combustible state where it can explode and burn. It is possible to extinguish the fire reliably in a short time when an abnormality occurs, and during combustion, the oil vapor on the fire pan is transported by the air from the small holes, so it is possible to prevent tar from adhering to the fire pan. There is something big about it.

Furthermore, in normal fire extinguishing operations, the opening provided in the wick outer cylinder is configured to be blocked by 3%, so embers are present during the time it takes to extinguish the wick, so unburned gas in the wick's two parts The effect of burning the fire extinguisher is that it reduces the smell of fire extinguishing.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a main part of an oil combustor according to an embodiment of the present invention, FIG. 2 is a partial cross-sectional view of the main part with the wick in a raised state,
Fig. 3 is a partial sectional view of the same essential part in a state where the core is lowered, Fig. 4 is a partial sectional view of the same essential part according to another embodiment, and Figs. 5, 6, 7, and 8 are conventional FIG. 1. Inner core guide tube (core inner tube), 3...core, 4...
Outer core guide tube (core outer tube), 6...Protrusion, 7...Small hole, 8...1-1 county part fitting, 9...Lower tube metal concrete, 10 - Opening 1- 1.11... Small room. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Zuka 2 Figure j Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] Inner and outer core guide 1iL! A lamp wick that moves downwardly in the housing space of this core guide tube, -1-A fire m↓ formed in the group part of the inner core guide tube or outer core guide tube, and the above-mentioned outer core guide tube. A protrusion for forming a gap formed on the lower tube metal concrete provided at the lower part so as to communicate with the wick storage space through the tower opening, and the lowering position of the lamp wick is b" + ° full, When a normal fire is extinguished, it is a part of the opening provided in the small room marked 1, and when an abnormal fire is extinguished, it is a part of the opening provided in the small room marked 1.
An oil combustor configured as a lower part.