JPS5937558Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a liquid fuel combustion device that performs combustion and extinguishing by vertical movement of a wick, and is intended to ensure ignition and improve reliability when using a discharge electrode.

In a combustion device that uses a vertically movable wick and raises the wick for combustion, those that have discharge electrodes fixed to both sides of the wick and use the spark to ignite the wick have the wick set too high. This had the fatal drawback of not generating sparks.

Another drawback was that if the wick was too low, the distance between the spark and the wick would widen and ignition would not occur, so it was necessary to precisely control the position of the electrode and the height of the wick.

Furthermore, even if the dimensions of the electrode and wick were controlled in the early stages, after long-term use, the wick would burn out and become low, increasing the distance between the spark and the wick and preventing ignition.

of course.

The above disadvantages can be overcome by increasing the capacity of the discharge spark, but in this case it is necessary to increase the size of the transformer that generates the high voltage, which generates heat and noise, and if the capacity of the spark is large, the discharge electrode It also has the disadvantage of burning out, and cannot generate large-capacity discharge sparks.

On the other hand, a spark with a small capacity has a small heat capacity, so if the wick and spark are separated, the fuel contained in the wick cannot be evaporated and ignition cannot be achieved.

Therefore, in order to reliably ignite with a small capacity discharge spark, it is necessary to generate the spark near the wick.

However, since the wick is made of a soft material and is slid up and down, it is extremely difficult to keep the height of the wick constant and the position of the spark and the wick constant.

The present invention solves such problems, particularly the fatal defect caused by spark errors, and one embodiment thereof will be described below with reference to the drawings.

In FIG. 1, 1 has a core guide tube 2 in the center, which is made of a hollow cylinder with an open top surface. 3 is a cylindrical core holding metal fitting that slides in contact with the cylindrical surface of the core guide tube 2. 4 is fixed to the inner periphery, the lower end is immersed in the fuel 5 in the oil tank 1, and the upper end is made of a soft material that protrudes from the upper surface of the core guide cylinder 2.

Reference numeral 6 denotes a core outer cylinder which covers the outer periphery of the core 3, has a lower part in close contact with the oil tank 1, an upper part in contact with the outer circumferential surface of the core 3, and further has an extension part provided thereon.

7 has a fulcrum on the side surface of the core outer tube 6, and its operating point is rotatably attached to the lower end surface of the core holding metal fitting 4. A core up/down lever 8 has a fulcrum on the side surface of the outer core tube 6. , the outer periphery is covered with an insulator 9.

One end protrudes from the outer upper surface of the core 3, and the other end is connected to the transformer 10.
This is the discharge electrode connected to the secondary terminal of the

11 is a cylindrical inner flame tube that is attached to the upper surface of the core guide tube 2 and has many small holes on its side, and 12 is an inner flame tube that is attached to the upper surface of the core outer tube 6 and has many small holes on its side. It is an outer flame tube.

13 is a power cord connected to the primary side of the transformer 10.

One end of the secondary terminal of the transformer 10 is connected to the discharge electrode 8, and the other end is grounded to the oil tank 1.

Further, by moving the lead up and down lever 7 up and down, the lead holding fitting 4 moves up and down along the lead guide tube 2, and the lead 3 fixed to the lead holding fitting 4 is moved up and down.

Further, as shown in FIG. 2, the lead holding fitting 4 has a protrusion 4a formed in a portion facing the discharge electrode 8, and the upper surface of the protrusion 4a is installed slightly lower than the upper surface of the core 3.

In the above configuration, when the wick 3 is raised as shown in FIG. 1, the fuel 5 in the oil tank 1 is sucked up by the wick 3, and the upper part of the wick 1 protrudes from the upper surface of the core guide tube 2 and the core outer tube 6. When the power cord 13 is now energized, a high voltage is generated on its secondary side by the transformer 10 and applied to the discharge electrode 8.

Furthermore, since the oil tank 1 is grounded as described above, the oil tank 1, the core guide tube 2, and the core holding fitting 4 are grounded.
As a result, a discharge spark is generated between the protrusion 4a of the wick holding fitting 4 and the discharge electrode 8, and the heat of the spark evaporates the fuel from the upper surface of the wick 3, and the spark ignites the vapor, causing the wick to evaporate.
The fire spreads all around.

Then, the inner flame tube 11 and the outer flame tube 1 attached to the top of the wick 3
Air is supplied through the small holes 2 and combustion takes place.

Extinguishing the fire is carried out by lifting the right end of the on-core f-lever 7 and lowering the wick 3 below the upper surface of the wick guide tube 2 to cut off the supply of combustion air.

In this configuration, the core holder 4 fixed to the inside of the vertically moving wick 3 serves as the ground electrode for the discharge spark, so the position of the core 3 and the core holder 4, which serves as the ground electrode, is always kept constant. , it is possible to reliably emit a discharge spark, and even a small-capacity spark can be reliably ignited.

Furthermore, by making the wick holding fitting 4 lower than the top surface of the wick 3, the discharge spark will surely fly along the top surface of the wick 3, making it easier to generate fuel vapor on the top surface of the wick 3, improving the ignition characteristics. .

Also, as shown in Figure 3, the core 3 is located opposite the discharge electrode.
By notching the upper surface to form a recess 3a and making the bottom surface of the recess 3a and the surface of the protrusion 4a-1 obliquely, the fourth
As shown in Figure 5, even if the height of the core changes slightly, the gap between the fixed discharge electrode 8 and the ground electrode does not change significantly, and the discharge can always be generated at the shortest position, ensuring reliable ignition. can be done.

In the above embodiment, the discharge electrode 8 was provided on the outside of the core 3, but conversely, the discharge electrode 8 was provided on the inside of the core 3, and the core holding metal fitting 4 was provided on the outer peripheral surface of the core 3, and the core holding metal fitting 4 was placed outside the core. The same effect can be achieved by sliding it in contact with the cylinder 6 as a ground electrode.

As mentioned above, the present invention generates a spark between the lead holder and the discharge electrode, so the spark is reliably generated and the wick ignition performance is extremely high.Moreover, the wick holder can be shared. Therefore, there is no increase in the number of parts and it can be provided at low cost.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a liquid fuel combustion device according to an embodiment of the present invention, Fig. 2 is a perspective view of the wick, Fig. 3 is a perspective view showing another embodiment of the wick, Figs. FIG. 3 is a front view showing the height relationship of the core with respect to the discharge electrode. 3... Core, 4... Core holding fitting, 8...
...discharge electrode.

Claims (1)

[Scope of utility model registration request] 1. A wick provided to be movable up and down, a discharge electrode for igniting fuel contained in the wick at a raised position of the wick, and a fitting for guiding the vertical movement provided on one side of the wick, A liquid fuel combustion device characterized by a ground electrode. 2. The liquid fuel combustion device according to claim 1, wherein one end of the metal fitting is positioned lower than the upper end of the wick. 3. The liquid heat combustion device according to claim 1, wherein the upper end surface of the metal fitting faces the discharge electrode is obliquely inclined.