JPH0141028Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a radiant oil combustor with an upper and lower wick.

Conventional structure and its problems Conventionally, it has been known that in this type of combustor, a small hole is provided in the core outer cylinder as shown in Figure 5, and the air that flows in through this hole is used to extinguish the fire in a short time. It is being 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 The steam that accumulates in the area is transported as shown by arrow H to prevent tar from adhering to the fire pan 35. However, in such a configuration, since there is always a gap G in the small hole 32 part, even if the wick 33 falls suddenly, the negative pressure generated by it is small and the air flowing in from the small hole 32 is insufficient, so in some cases In some cases, the fire was not extinguished within 10 seconds.

In addition, as a method of shortening the extinguishing time, a small chamber 46 is formed on the outer periphery of the core outer cylinder 44 as shown in FIG. It is known that the fire is extinguished by exploding it and extinguishing it with the blast wave. However, with this configuration, there is a tendency to lack air to mix with the unburned gas, and in some cases, this unburned gas may not reach the flammable range and explode, and the fire may not be extinguished in a short time. Ta.

Therefore, the present inventor further devised a structure in which a small hole 42 and a protrusion 43 were provided on the vertical wall surface of the lower part of the fire pan 41, and an air hole 45 was further provided on the outer circumferential wall surface of the outer core cylinder 44. According to this configuration, the unburned gas in the small chamber 46 receives air from the air hole 45 as well as the air from the small hole 42, so that it reaches a flammable state reliably and quickly, and is extinguished in a shorter time. be able to. In other words, it was highly effective when it was desired to extinguish a fire in a short time, such as during an earthquake or when equipment fell over. However, even with normal fire extinguishing operations, the fire is extinguished in a short period of time, and because the fire is extinguished by blowing it out by combustion and explosion, unburned gas remains, which has the disadvantage of emitting a strong odor. This problem of bad odor can be solved by not providing air holes in the outer peripheral wall of the outer core cylinder, but in this case, there is insufficient air to burn and explode the unburned gas in the small chamber 46.
As a result, the fire was not extinguished in a short period of time.

Purpose of the invention The present invention was created in view of the above-mentioned problems, and aims to ensure shortening of extinguishing time in the event of a fall and to eliminate the usual fire extinguishing odor.

Structure of the invention In order to achieve the above object, the present invention forms a small chamber communicating with the core housing space in the outer core cylinder, provides a small hole in the upper part of the small chamber, and forms the member forming the small hole from stainless steel. A slight gap is formed between the core and outer cylinder, and an opening communicating with the outside is provided only in the rear wall surface of the core outer cylinder.

Description of examples An embodiment thereof will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an inner core cylinder erected in an oil tank 2, and an outer core cylinder 4 is attached to the outer periphery of the inner core cylinder 1 via a core 3. The core 3 is vertically slidable between the core inner cylinder 1 and the core outer cylinder 4.

The outer tube 4 consists of an upper tube fitting 8 and a lower tube fitting 9. The upper cylindrical metal fitting 8 has an outer fire pan 5 at its upper end, several protrusions 6 that form a slight gap A between it and the wick 3, and a small hole 7 so as to communicate with this gap A. It is made of stainless steel. Further, the lower tube metal concrete 9 has a small chamber 11 that communicates with the core housing space 12 through an opening 10, and an opening 13 that communicates with the outside is provided on the rear wall surface of the small chamber 11, and the other parts are non-porous. After being press-fitted with the cylindrical metal fitting 8, it is fixed by caulking.

An inner fire pan 14 is provided at the upper part of the core inner cylinder 1, and a chimney 15 is placed together with the outer fire pan 5. 16 is the cabinet, 17 is the top plate, 1
8 is a guard, and 19 is a radiant plate, which surrounds the oil tank 2 and the combustion section to form a radial oil combustor.

In the above configuration, when the wick 3 is moved upward to extinguish the fire, the oil in the oil tank 2 is sucked up to the upper part of the wick 3, vaporizes there, mixes with external air, and burns.
If the appliance falls backwards as shown in Fig. 3, the chimney 15 will fly away from the fire pan, the wick 3 will be lowered to its maximum extent by the elevating mechanism (not shown), and the wick outer cylinder will fall as shown in Fig. 4. From the small holes 7, openings 13, and upper parts of the inner and outer fire pans 14 and 5 of 4, the cold air from the outside rapidly flows to the upper part of the hot wick 3, cooling the upper part of the wick 3, and further cooling the upper part of the wick 3. A large amount of unburned gas from the front wick storage space descends into the small chamber 11 due to the difference in specific gravity, that is, collects in the rear wick storage space 12 into which the air enters as it falls backward, and into the small chamber 11. The mixture becomes flammable, and the afterflame above the wick 3 ignites, causing the wick storage space 12 to ignite as before.
In addition, most of the unburned gas generated in the small chamber 11 is explosively combusted, and the blast wave blows out the afterflame above the wick 3, so that the fire can be extinguished in a short time.

On the other hand, in normal fire extinguishing operations, the negative pressure generated by the wick dropping causes cold air from the outside to be pumped into the small hole 7.
However, since the chimney 15 does not fly away from the fire pan as in the case of falling over, heat radiation from the high-temperature atmosphere inside the chimney causes the wick storage space 12 above the wick 3 to flow rapidly through the hole. is not cooled as much as in the case of backward overturning, and the flame in the chimney 15 tends to propagate to the upper part of the core in the wick storage space 12, and air enters from the opening 13 of the core outer cylinder 4 as in the case of backward overturning. However, the unburnt gas in the front wick storage space does not collect in the rear small chamber 11 and wick storage space 12 where the air enters, as in the case of the rear tipping.
Even if the unburned gas in the rear storage space becomes flammable and explodes and burns, the amount of mixed gas in the flammable state corresponds to the amount of unburned gas only in the rear compartment and the core storage space. However, since the amount is extremely small compared to the amount at the time of the post-fall, the force of the explosion is weak and does not reach the point where the afterflame at the top of the wick is blown out. Therefore, it takes about 1 to 3 minutes at the top of the wick for complete combustion, which eliminates the generation of unburned gas and eliminates odor.

Effects of the Invention As is clear from the above description of the embodiments, the present invention (1) suppresses the generation of unburned gas during normal extinguishing by using a small amount of air from the small hole 7 and the opening 13 in the rear wall of the core outer cylinder; Effective in eliminating fire extinguishing odors.

(2) Even in the case of a falling appliance, which is the most difficult to extinguish, the opening 13 is provided on the rear wall of the core outer cylinder, so the air flow is smooth and the unburned gas in the chamber 11 is kept in a combustible state. This makes it possible to extinguish the fire in a short period of time.

(3) During combustion, the air from the small holes 7 and openings 13 transports petroleum vapor on the fire pan, thereby preventing tar from adhering to the fire pan.

[Brief explanation of the drawing]

Figure 1 is an external view of the radiant oil combustor of the present invention.
Figure 2 is a half-mounted sectional view of the same as the above, Figure 3 is a view of the same as the above when it is turned over, Figure 4 is a main sectional view of the same as the above when it is turned over, and Figures 5 and 6 are the main parts of the conventional example. FIG. 3... core, 4... core outer cylinder, 6... protrusion, 7...
Small hole, 8... Upper tube metal fitting, 9... Lower tube metal concrete,
10...opening, 11...small chamber, 13...opening.

Claims (1)

[Scope of utility model registration request] It is equipped with an inner and outer wick guide tube and a wick that moves up and down in the accommodation space between the wick guide tubes, and either the inner or outer wick guide tube is connected to the stainless steel upper tube fitting that constitutes the fire pan through the opening. The lower tube metal fitting forms a small chamber communicating with the wick housing space, and the opening is provided at a position where it is closed by the wick when the wick is raised and opened when the wick is lowered, and the upper tube metal fitting is provided at a position where the opening is closed by the wick when the wick is raised and opened when the wick is lowered. A protrusion is provided to form a slight gap between the core housing space or a protrusion having a different diameter, a small hole is provided to communicate with the gap, and an opening communicating with the outside is provided only on the rear wall surface of the core housing space. An oil combustor.