JPS6335249Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an oil-burning appliance using a lamp wick that can be moved up and down.

Configuration of conventional examples and their problems Generally, it is already known that a fire extinguishing chamber is provided in the outer cylinder of an oil combustor, and a fire extinguishing slit is provided in the extinguishing chamber to shorten the extinguishing time. It is constructed as shown in FIG. That is, there is an outer wick tube 2 and a guide tube 3 that sandwich the vertically moving wick 1 between them, an outer fire pan tube 4 is fitted above the wick outer tube 2, and a fire extinguisher tube 4 is fitted below the wick outer tube 2. Tube 5
are fitted. Then, the outer core cylinder 2 and the fire extinguisher cylinder 5
A fire extinguishing chamber 6 and a fire extinguishing slit 7 are formed in the extinguishing chamber 6, and a fire extinguishing hole 8 for introducing air into the extinguishing chamber 6 is bored in the outer wall of the outer core cylinder 2. At this time, the fire extinguishing slit 6
The inner diameter of the upper outer wick cylinder 2 and the inner diameter of the lower fire extinguisher cylinder 5 are set to be approximately the same, and the inner diameter of the outer fire pan 4 fitted above the outer wick cylinder 2 is the same as that of the outer wick cylinder 2. There were two types, one with the same inner diameter and one with the outer fire pan cylinder 4 having a larger inner diameter.

In an oil combustor with such a configuration, during combustion, the wick 1 protrudes beyond the guide tube 3 and the outer fire pan 4, and the gas vaporized from the wick 1 is placed on the upper surfaces of the guide tube 3 and the outer fire pan 4. It mixes with air entering through multiple pores of the cylinder and burns, but at that time, the inner diameter of the core outer cylinder 2 above the fire extinguishing slit 7 and the fire extinguishing slit 7
Since the inner diameters of the lower fire extinguisher tubes 5 are almost the same, the extinguisher slit 7 is completely hidden by the lamp wick 1, making it difficult for the draft generated by the combustion tube to enter the fire extinguisher chamber 6. Therefore, the fire extinguishing chamber 6 is at approximately atmospheric pressure. Even if the fire extinguishing operation is carried out in such a state and the lamp wick 1 is lowered below the fire extinguishing slit 7, the inside of the fire extinguishing chamber 6 is not in a very negative pressure state, so evaporation from the lamp wick 1 still occurs. It is difficult for the gas to flow from the fire extinguishing slit 7 into the fire extinguishing chamber 6, and when it mixes with air stored during combustion to cause explosive combustion, its explosive energy is small. Therefore, the energy generated by the explosive combustion in the fire extinguishing chamber 6 to blow out the flames remaining near the top of the outer fire pan 4 and the guide tube 3 is small, making it impossible to extinguish the fire in a short time. occurs. In particular, if the inner diameter of the outer fire pan 4 located above the core outer cylinder 2 is the same as the inner diameter of the core outer cylinder 2, it becomes increasingly disadvantageous.

In order to solve this problem, the inner diameter of the wick outer tube 2 above the extinguishing slit 7 and the inner diameter of the extinguishing tube 5 below the extinguishing slit 7 are made much larger than the outer diameter of the wick 1, so that the extinguishing slit 7 It may be possible to prevent it from being hidden by the wick 1, but in this case, when the wick 1 falls, the flame near the fire pan ignites from the gap between the wick 1 and the fire extinguishing tube 5, and the kerosene spills out. Explosive combustion similar to the one described above may occur in the tank where the fuel is being stored, which is extremely dangerous.

Purpose of the invention The present invention eliminates these conventional drawbacks, and aims to ensure fire extinguishment in a short period of time and to improve safety.

Structure of the invention In order to achieve the above object, the present invention not only provides a fire extinguishing chamber through a fire extinguishing slit in the outer core cylinder, but also sets the diameter of the lower part of the extinguishing slit of this extinguishing chamber to d ₁ and the diameter above the extinguishing slit to d. ₂ , furthermore, if the diameter of the outer fire pan tube above it is d ₃ , then d ₁ < d ₂ < d ₃ .

DESCRIPTION OF EMBODIMENTS One embodiment will be described below with reference to FIGS. 2 to 5. Note that the same parts and parts as in the conventional example will be explained using the same numbers.

In the figure, 1 is a light wick that can be moved up and down, and 2 is a light wick that can be moved up and down.
3 is a guide tube located on the inside of the wick 2. Reference numeral 4 denotes an outer fire pan fitted above the core outer cylinder 2, and 5 a fire extinguishing cylinder fitted below the core outer cylinder 2. A slit 7 is formed. 8 is a fire extinguishing hole made in the outer wall of the core outer cylinder 2 for introducing air into the fire extinguishing chamber 6. 9 is a combustion tube placed on the upper surface of the guide tube 3 and the outer fire pan 4; 10 is a wick up and down knob for moving the wick 1 up and down; 11
1 is a wick holding metal fitting for transmitting the movement of the wick upper and lower knobs 10 to the wick 1, and 12 is a kerosene tank.
The inner diameter d ₁ of the fire extinguisher cylinder 5, the inner diameter d ₂ of the core outer cylinder 2,
Comparing the inner diameter d ₃ of the outer fire pan cylinder 4, the structure is such that d ₁ < d ₂ < d ₃ .

In the above configuration, the rotational movement of the wick upper and lower knobs 10 is changed into an up-and-down movement by the wick presser metal fitting 11, and the wick 1
slide up and down. First, to explain the situation during combustion with reference to Fig. 3, the wick 1 is connected to the guide tube 3 and the outer fire pan tube 4.
The evaporated gas of kerosene that protrudes from the upper surface of the lamp wick 1 and is vaporized from the wick 1 mixes with the air that enters through the plurality of openings in the combustion tube 9 and is combusted. At this time, there is a larger gap between the wick outer cylinder 2 and the lamp wick 1 than between the fire extinguishing tube 5 and the lamp wick 1. Therefore, due to the draft 13 generated in the combustion tube 9, the air 14 in the fire extinguishing chamber 6 is drawn through the gap between the wick outer tube 2 and the lamp wick 1.
is pulled, and the inside of the fire extinguishing chamber 6 becomes in a negative pressure state. Then, fresh air 15 is introduced into the fire extinguishing chamber from the fire extinguishing hole 8.

In addition, in this combustor, the inner diameter d ₃ of the outer fire pan 4 is larger than the inner diameter d ₄ of the core outer cylinder 2, so during combustion,
There is also a large gap between the outer fire pan tube 4 and the lamp wick 1, and a sufficient amount of air 19 enters through the air hole 18 provided in the side wall of the outer fire pan tube 4. Therefore, the flow of air rising along the outer wall of the wick 1 increases due to the synergistic effect with the air 14 from the fire extinguishing chamber 6, preventing tar from accumulating on the outside of the wick 1 and causing poor combustion. This makes it possible to extend the life of the lamp wick.

In addition, even if tar accumulates on the wick 1 and the tip of the wick 1 stops near the top of the guide tube 3 or the outer fire pan 4 and the fire does not go out, the wick 1 and the air hole 18
Due to the large distance between is also possible.

Next, the situation immediately after the fire extinguishing operation is performed will be explained in FIG. 4, and the situation a little after that will be explained in FIG. 5. When the fire extinguishing operation is performed, the wick 1 passes through the fire extinguishing slit 7.
The evaporated gas of kerosene lowers below the lamp wick 1 and vaporizes from the wick 1, flowing into the fire extinguishing chamber 6 through the extinguishing slit 7 as shown by arrow 16, and mixing with the air in the fire extinguishing chamber 6. Then, the mixed gas ignites, and fire extinguishing room 6
Explosive combustion occurs within the interior, and the resulting pressure escapes upward through the fire extinguishing slit 7 as shown by the arrow 17, blowing out the flame remaining near the top of the guide tube 3 and the outer fire pan tube 4, and extinguishing the flame. be done.

At this time, as mentioned above, the fire extinguishing chamber 6 is already at a slightly negative pressure during combustion, so when the fire is extinguished, that is, when the wick 1 is lowered, kerosene evaporated gas and air from outside enter the fire extinguishing chamber 6. They easily flow into each other, and they mix rapidly and become flammable. Therefore, the explosive combustion energy generated in the fire extinguishing chamber 6 is quite large, and moreover, explosive combustion occurs at the same time as the wick falls. Therefore, this fire extinguishment occurs reliably, and the extinguishing time is instantaneous and within 2 to 3 seconds. Furthermore, since there is almost no space between the fire extinguisher 5 and the lamp wick 1, the flame near the fire tray will not ignite in the tank 12, making it safe.

Effects of the invention As is clear from the above description of the embodiments, according to the present invention, extinguishment can always be extinguished in a short time,
Moreover, it is safe because there is no ignition inside the tank, and the life of the lamp wick can be extended, which has great effects.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional oil-burning appliance, FIG. 2 is a sectional view of an oil-burning appliance according to an embodiment of the present invention, and FIG. 3 is a sectional view of essential parts showing the combustion state of the same oil-burning appliance. Figure 4 is a sectional view of the main part immediately after the fire was extinguished, and Figure 5 is a sectional view of the main part a little while after the fire was extinguished. 1... Light wick, 2... Core outer tube, 3... Guide tube, 4
...Outer fire pan, 5...Fire extinguisher, 6...Fire extinguishing room, 7
...Fire extinguishing slit, d ₁ ...Inner diameter of fire extinguisher tube, d ₂ ...
Inner diameter of core outer cylinder, d ₃ ... Inner diameter of outer fire pan.

Claims (1)

[Scope of utility model registration request] It is equipped with a lamp wick that is movable up and down, a guide tube and a core outer tube that guide the vertical movement of the wick, and a wick storage space between the guide tube and the core outer tube is provided in the wick outer tube through a fire extinguishing slit. A communicating fire extinguishing chamber is provided, and an outer fire pan is fitted onto the upper part of the core outer cylinder, and the diameter below the fire extinguishing slit is _d1 , the diameter above the fire extinguishing slit is _d2 , and the outer fire pan above the fire extinguishing slit is d1. The diameter of the tube is d ₃
An oil burning appliance characterized in that d ₁ < d ₂ < d ₃ .