JP2947315B2 - Oil-fired discharge igniter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge igniter for an oil combustor which ignites a combustion wick using a discharge spark.

[0002]

2. Description of the Related Art Generally, an ignition device for an oil combustor is a device in which electricity from a dry battery is supplied to a thin filament to cause the filament to glow red and ignite a combustion wick.

Although not commercialized, Japanese Utility Model Publication No. 63-3
As disclosed in Japanese Patent No. 5244, a technique is known in which a discharge electrode for ignition and a counter electrode are provided so as to be interposed between a combustion core and discharge is performed, and the discharge core generated ignites the combustion core. Also, a technique is known in which an electrode is embedded in a combustion wick, discharges the electrode, and ignites the combustion wick.

[0004]

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned prior art, which ignites a combustion wick using the latter discharge spark. Among ignition devices using discharge sparks, those using dry batteries have a problem that sparks due to discharge are weak,
Furthermore, even after finding the best position where the reliability of ignition is high, after the burning time elapses, the surface of the burning wick changes in height, sags, tars, etc. In some cases, the position of the combustion wick and the discharge electrode may be slightly displaced, so that even if a discharge occurs, the spark separates from the combustion wick and does not ignite at all, or ignites only with the emission of white smoke. It is presumed that practical application has been delayed because of the drawback of difficulty.

[0005] If a discharge type ignition device is put into practical use, it will replace the filament type, which has a high degree of wear and has many defects such as deformation and disconnection, and is expected to greatly reduce complaints due to poor ignition. The realization of a discharge type ignition device is awaited.

[0006]

According to the present invention, in order to solve the above-mentioned problems, the discharge electrode 3 is looked up at a position corresponding to the exposed side surface of the combustion wick 2 ascending above the wick housing cylinder 1. On the same side as the combustion wick 2 facing the discharge electrode 3, the counter electrode 4 is arranged at a position corresponding to the side surface of the combustion wick 2 exposed by shifting a predetermined distance A laterally from the position of the combustion wick 2. The opposing electrode 4 is in contact with the combustion wick 2 and ignites the combustion wick 2 by discharging a spark between the discharge electrode 3 and the opposing electrode 4. , The side surface of the combustion wick 2 is pressed in the opposite direction from the side where the discharge electrode 3 is mounted.

Further, the counter electrode 4 is formed in a shape of an inverted U or the like to form a constant width B, and a side wall of the combustion wick 2 is pressed with a constant width so that no obstacle is interposed between sparks to be discharged. Like that.

A thin cloth 5 woven from heat-resistant fibers is provided on a side surface of the combustion core 2 at a portion pressed by the counter electrode 2.
By using the thin cloth 5, it is possible to prevent frays, fluffs and the like of the combustion wick 2 which are likely to be generated when the combustion wick 2 is moved up and down.

[0009]

When the combustion wick 2 mounted in the wick housing 1 is lifted, the upper edge of the wick 2 is exposed above the wick housing 1, and when the ignition device is operated, the discharge electrode 3 and the counter electrode 4 are activated. And a spark discharge is performed. At this time, since the counter electrode 4 is pressing the side surface of the combustion core 2, the discharge spark flies so as to cover the side surface of the combustion core 2, and the combustion core 2 in contact with the counter electrode 4 Preheating and ignition of the side surface are smoothly performed between the discharge electrode 3 and the counter electrode 4 by the discharge spark, and reliable ignition is possible.

[0010]

FIG. 1 is a sectional view of an essential part of a product according to the present invention, FIG. 2 is a plan view of an essential part showing the embodiment, and FIG. 3 is an oil combustor. FIG. 2 is a cross-sectional view illustrating a configuration relationship between the ignition device and the ignition device of the present invention. FIG. 4 is a plan view of a main part showing another embodiment, and FIG. 5 is a cross-sectional view showing another embodiment of the positional relationship and the shape of the discharge electrode and the counter electrode. Is shown. Components common to each of the drawings are described with the same reference numerals.

Numeral 1 is a core housing cylinder which houses the combustion core 2 so as to be able to be vertically guided, and is constituted by an inner core cylinder 1a and a core outer cylinder 1b. Numeral 6 denotes an oil tank provided at the lower part of the wick housing cylinder 1 for immersing the lower end of the wick 2 to suck up and supply fuel. 7
Is a core up / down lever for transmitting the operation of a core up / down device (not shown) provided outside the wick housing cylinder 1 and the oil tank 6 to the combustion wick 2. Inner cylinder 1a
The combustion wick 2 moves up and down along.

Reference numeral 9 denotes a radiator plate connected to the upper outer periphery of the core outer cylinder 1b. Reference numeral 3 denotes a discharge electrode integrally held and fixed to the heat radiator plate 9. The discharge electrode 3 extends upward from the upper edge flange of the core outer cylinder 1b. It is disposed on the core outer cylinder 1b via the insulator 3a, and the position of the discharge electrode 3 is opposite to the side surface of the combustion core 2 which is raised above the core housing cylinder 1 and exposed by the core vertical lever 7 and is exposed. is there.

A counter electrode 4 is located on the same side as the combustion core 2 facing the discharge electrode 3 and has one end connected to the core outer cylinder 1b and an upper end provided in contact with the side surface of the combustion core 2. The electrode 4 is provided so as to be shifted from the position of the combustion wick 2 facing the discharge electrode 3 by a predetermined distance A in the horizontal direction.
And discharge the spark to ignite the combustion wick 2.

Numeral 8 is a combustion cylinder connected to the upper end of the core outer cylinder 1b and mounted on the upper edge flange of the core inner cylinder 1a.
Inner cylinder 8a and outer cylinder 8b located above the outer cylinder 8
It is composed of an outer cylinder 8c arranged outside b.

Therefore, when the core up / down lever interlocked with the core up / down device (not shown) is rotated to raise the combustion wick 2, the upper edge of the combustion wick 2 is exposed above the wick housing cylinder 1. Since the wick housing cylinder 1 is placed on the oil tank 6 and the lower end of the combustion wick 2 is immersed in the fuel of the oil tank 6, the fuel in the oil tank 6 can be sucked up and supplied to the upper end of the combustion wick 2. it can. Next, when an ignition switch (not shown) is turned on, a spark discharge is generated between the discharge electrode 3 and the counter electrode 4, and the discharge spark preheats and ignites the side surface of the combustion wick 2. The fuel is burned in a combustion tube 8 placed above the core housing tube 1. After ignition, turn off the ignition switch
In this case, the discharge is stopped, and when the oil combustor is extinguished, the core lowering operation is performed by the core up / down lever 7 to lower the combustion core 2 into the core housing cylinder 1 and extinguish the fire.

In the above-described oil combustor, according to the present invention, the shape of the counter electrode 4 which comes into contact with the exposed combustion core 2 is such that the side surface of the combustion core 2 is pressed from the side where the discharge electrode 3 is mounted to the opposite direction. The spark that is discharged between the counter electrode 4 and the discharge electrode 3 that presses the combustion core 2 travels along the side surface of the combustion core 2, and the combustion core 2 is always applied to the counter electrode 4. Even if it is pushed, even if it is slightly deformed or the mounting position is changed, the discharge spark always flies along the side of the combustion wick 2, so that the ignition is performed smoothly and the reliability is greatly increased. is there.

In the embodiment shown in FIG. 1 and FIG.
Has a material of about 0.5 mm fixed to the core outer cylinder 1b, and the shape of the counter electrode 4 is further bent in an arc shape so as to press the combustion core 2 from the mounting side of the discharge electrode 3 in the opposite direction. Therefore, the combustion wick 2 and the opposing electrode 4 always maintain a contact state, and since the heat capacity of the opposing electrode 4 is small, the temperature of the combustion wick 2 easily rises to a high temperature due to the discharge spark, thereby enabling stable ignition.

In the embodiment shown in FIGS. 4 and 5, the counter electrode 4 is formed by bending the wire into an inverted U-shape to form a fixed width B between the wires. The counter electrode 4 was not buried in the combustion wick 2 even with a thin wire, and a wide and constant space was secured between the discharge electrode 3 and the counter electrode 4.

Further, in the embodiment shown in FIG. 5, reference numeral 5 denotes a thin cloth attached to the side surface of the combustion core 2 in contact with the counter electrode 4; This prevents fluff on the side surface of the wick 2. For this reason, the large fluff of the combustion wick 2 is prevented by the thin cloth 5, the air layer is reliably maintained between the electrodes 3 and 4, and the discharge spark does not hit the large obstacle. Now fly along the surface.

In addition, if the fluff is generated in the thin cloth 5, a good result is produced in place of ignition, and a part of the spark discharge easily comes into contact with the fluff of the thin cloth 5 of the combustion wick 2 and is stable. It contributed to the ignition.

[0021]

The present invention has the above-described structure and operation. Although the spark discharge proceeds linearly between the discharge electrode 3 and the counter electrode 4, the counter electrode 4 faces the discharge electrode 3. The side surface of the combustion wick 2 is pressed in the opposite direction from the side where the discharge electrode 3 is mounted after being shifted by a predetermined distance A from the position of the combustion wick 2 to be burned. 2 and the discharge electrode 3 and the combustion wick 2
, And the interval can be kept constant, so that ignition can be reliably performed.

Further, when the opposite electrode 4 and the discharge electrode 3 are shifted by a predetermined distance A and the discharge spark flies sideways on the side of the combustion wick 2, the fuel vapor generated by the discharge spark is discharged from both electrodes 3.
The air flow to the flame at the time of ignition is easily performed by the upward flow due to the discharge spark without staying in the vicinity of No. 4, and ignition delay and mis-ignition do not occur.

In order to increase the certainty of ignition, it is necessary to generate a high-temperature discharge spark. However, the side surface of the combustion wick 2 is formed while the counter electrode 4 is formed in an inverted U shape to form a constant width B. When pressed, the combustion wick 2 can be pressed reliably, and the heat capacity of the counter electrode 4 can be reduced, so that the discharge spark is less likely to be cooled by the counter electrode 4 and sufficient energy is supplied. It can be used for ignition.

Since the upper portion of the wick 2 is generally made of heat-resistant fiber such as glass fiber or carbon fiber, when the counter electrode 4 presses the side surface of the wick 2, the tip of the wick 2 is moved. It is easy to fray and the fluffing is increased, which causes ignition to be hindered. However, if the thin cloth 5 woven with the heat-resistant fiber fine thread is attached to the side surface of the combustion core 2, a large fluff is prevented and suitable for ignition. It is very useful because it can be suppressed to fluff.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of the product of the present invention.

FIG. 2 is a plan view of a main part of the embodiment shown in FIG.

FIG. 3 is a cross-sectional view showing a relational configuration between an oil combustor and a product of the present invention.

FIG. 4 is a plan view of a main part of another embodiment.

5 is a side sectional view showing a positional relationship between a side surface of a combustion core and a discharge electrode and a counter electrode in the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 core storage cylinder 2 combustion core 3 discharge electrode 4 counter electrode 5 thin cloth

Claims (3)

(57) [Claims] 1. A discharge electrode 3 is positioned at a position corresponding to a side surface of a combustion wick 2 which is raised upward and exposed above a wick accommodating cylinder 1, and combustion is performed on the same side as the combustion wick 2 facing the discharge electrode 3. Combustion wick 2 exposed at a fixed distance A laterally from the position of wick 2
The counter electrode 4 is arranged at a position corresponding to the side surface of the fuel cell. The counter electrode 4 comes into contact with the combustion wick 2 to cause a discharge spark between the discharge electrode 3 and the counter electrode 4 to ignite the combustion wick 2. A discharge electrode for an oil-fired combustor, characterized in that the opposed electrode 4 in contact with the exposed combustion core 2 presses the side surface of the combustion core 2 from the mounting side of the discharge electrode 3 in the opposite direction. apparatus. 2. The petroleum combustion according to claim 1, wherein the counter electrode (4) is formed in a shape of an inverted U or the like to form a constant width (B) and presses the side surface of the combustion core (2) with a constant width. Discharge igniter. 3. The discharge ignition of an oil-fired combustor according to claim 1, wherein a thin cloth woven with a thin thread of heat-resistant fiber is attached to a side surface of the combustion core 2 which is pressed by the counter electrode 2. apparatus.