JPH06341642A - Ignition electrode structure of oil burner - Google Patents

Abstract

PURPOSE:To realize stable spark ignition even if a fine change is produced in a wick surface owing to a height change of the wick, deformation, tar deposition, etc. CONSTITUTION:An ignition electrode structure is constructed by providing on the side surface of an elevated wick 2 and electric discharge electrode 4 having a tapered flat plate portion 3 such that the side surface of the wick 2 is pressed and fallen down, and further providing an opposite electrode 4 upwardly of the wick so as to face the electric discharge electrode 4. Even if there are variations in elevation locations of the wick, spark electric discharge between the wick and the opposite electrode 5 occurs on the side surface of the wick 2. Hereby, the electrode is prevented from being buried in the wick 2 and firing performance is securely improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode structure of an electric discharge type ignition device of an oil combustor, which ignites a combustion wick by using electric discharge.

[0002]

2. Description of the Related Art As an ignition device for a petroleum combustor using a combustion wick, it is general to ignite the combustion wick by flowing electricity from a dry battery to a fine filament to cause the filament to glow red.

Although not commercialized
As in No. 5244, a technique is known in which a combustion wick is sandwiched, a discharge electrode for ignition and a counter electrode are provided, and the combustion wick is ignited by using an electric discharge. To improve, Japanese Patent Application No. 4-34517 and Japanese Patent Application No. 4-4
No. 34518 and Japanese Patent Application No. 5-21727 are proposed.

[0004]

SUMMARY OF THE INVENTION The present invention relates to one of the above-mentioned prior arts which discharges above a combustion core and ignites the combustion core. That is, the problem of the method of discharging and igniting above the combustion wick using a power source with a small electric capacity such as a dry battery is that there is a slight deviation in the positional relationship between the combustion wick and the discharge electrode and the counter electrode. Alternatively, it was found that if the electrode was buried in the wick, it would not ignite even if it was discharged, and only white smoke (raw gas) would be emitted.

If the discharge type ignition device ignites smoothly, it will replace the filament type, which has many defects such as deformation and disconnection, and it is considered that complaints due to ignition defects will be greatly reduced. The applicant is aiming for practical use by improving the ignition performance and improving the electrode structure of the ignition device.

[0006]

According to the present invention, a wick adjuster 1 is provided to face a side surface of a combustion wick 2 which is raised and exposed, and has a tapered flat plate portion 3 in a direction toward the combustion wick 2. The discharge electrode 4 is provided, and the tip of the tapered flat plate portion 3 of the discharge electrode 4 is located slightly below the upper end 2a of the combustion wick 2 at the highest position.
Moreover, the ignition electrode structure of the petroleum combustor is formed by providing the counter electrode 5 facing the discharge electrode 4 above the discharge electrode 4.

Further, the flat plate portion 3 of the discharge electrode 4 is provided with a cut portion 3a so that the beard / fray at the tip of the combustion wick 2 protrudes into the cut portion 3a to improve the ignition performance. .

[0008]

Operation: The wick 2 exposed above the wick adjuster 1 is exposed.
Since the discharge electrode 4 is provided on the side surface of the combustion electrode 2 and the tapered flat plate portion 3 is provided on the discharge electrode 4, the side surface of the combustion core 2 is pushed by the tapered flat plate portion 3 when the combustion core 2 rises. Then, the combustion core 2 and the tapered flat plate portion 3 come into close contact with each other.

When a spark discharge is generated between the tapered flat plate portion 3 of the discharge electrode 4 and the counter electrode 5 by an ignition operation, the positional relationship between the tapered flat plate portion 3 and the combustion core 2 is always constant, and combustion is performed. Preheating and ignition of the side surface of the core 2 are smoothly performed.

Further, since the notched portion 3a is provided in the tapered flat plate portion 3 of the counter electrode 5 and the discharge electrode 4, the whisker and fray of the combustion wick 2 pushed by the tapered flat plate portion 3 are notched portion 3a.
Since it protrudes from the front, it is possible to preheat and ignite through the mustache and fray, and it is possible to reliably ignite.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure will be described below with reference to the drawings showing an embodiment. FIG. 1 is a sectional view of the essential part of the present invention, FIG. 2 is a plan view of the essential part of the same embodiment, and FIG. 3 is an oil combustor and the present invention. It is sectional drawing which shows the structural relationship with an ignition electrode structure.

Reference numeral 1 is a lead adjuster for accommodating a combustion lead 2 and guiding it vertically, and comprises a lead inner cylinder 1a and a lead outer cylinder 1b. Reference numeral 4 denotes a discharge electrode (plus electrode) attached to the upper edge flange portion of the outer core 1b via an insulator 4a, which is exposed when the combustion wick 2 is raised above the wick regulator 1. Of the combustion wick 2 is provided below the wick upper end 2a of the combustion wick 2.

Reference numeral 3 denotes a tapered flat plate portion formed at the tip of the discharge electrode 4, which pushes open the tip of the discharge electrode 4 or fixes a rectangular metal plate (a separate member having a width of about 2 to 10 mm). Further, the tip is tapered toward the combustion wick 2, and the rising combustion wick 2 is pushed and swept by the tapered flat plate portion 3 to keep the positional relationship between the combustion wick 2 and the tapered flat plate portion 3 constant. I have to. At this time, unlike the wire rod, since the tapered flat plate portion 3 pushes the combustion wick 2 with the surface, the discharge electrode 4 is not buried inside the combustion wick 2.

Reference numeral 5 denotes a counter electrode (minus electrode) provided slightly above the core upper end 2a of the combustion wick 2 at the highest position to face the discharge electrode 4, and a dry battery power source, a switch, and a high voltage (not shown) during ignition operation. The discharge electrode 4 and the counter electrode 5 are connected via a generator, and a spark discharge is generated between the electrodes 4 and 5 by turning the switch "ON" and "OFF".

When a cut portion 3a is provided at a part of the upper edge of the tapered flat plate portion 3, a beard / fray (single fiber) of the combustion wick 2 facing the cut portion 3a is projected, and some of the beard exists. Doing so produces a good result rather than ignition, and the spark discharge between the discharge electrode 4 and the counter electrode 5 ignites the beard first, and then the flame spreads over the entire upper end 2a of the combustion wick 2.

Reference numeral 6 denotes an oil tank provided below the lead adjuster 1, and the lower end of the combustion lead 2 is soaked in the oil tank 6 to supply fuel. Reference numeral 7 denotes a lead vertical shaft for transmitting the operation of a lead vertical drive device (not shown) provided outside the lead adjuster 1 and the oil tank 6, and 7a vertically moves the combustion lead 2 inscribed in the lead inner cylinder 1a. This is a core up / down lever attached to the core up / down shaft 7 in order to do so.

Reference numeral 8 is a combustion cylinder placed above the lead adjuster 1, and is composed of an inner flame cylinder 8a, an outer flame cylinder 8b, an outer cylinder 8c and the like. 9
Is a heat dissipation plate connected to the outer periphery of the upper portion of the outer core tube 1b, and integrally holds and fixes the insulator 4b of the discharge electrode 4.

[0018]

EFFECTS OF THE INVENTION The present invention has the above-described structure and operation. Since the tapered flat plate portion 3 in the direction of the combustion core 2 is provided at the tip of the discharge electrode 4, the combustion core 2 and the tapered flat plate portion are provided. Three
Does not cause ignition failure even if there is a slight error in the vertical dimension of the combustion wick 2 or the combustion wick 2 deteriorates.

Further, since the tapered flat plate portion 3 provided on the discharge electrode 4 has a wide tip, the discharge electrode 4 is not buried inside the combustion wick 2 and therefore does not ignite even when discharged. The disadvantage of white smoke was eliminated.

Further, when the cut portion 3a is provided at a part of the upper edge of the tapered flat plate portion 3, the fine fibers of the combustion wick 2 project into the cut portion 3a in a beard-like shape. On the contrary, it has been experimentally confirmed that a small amount of the whiskers satisfactorily ignites, and it has a feature of surely igniting.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential 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 the product of the present invention.

[Explanation of symbols]

 1 core adjuster 2 combustion core 2a core upper end 3 tapered flat plate portion 3a cut portion 4 discharge electrode 5 counter electrode

Claims (2)

[Claims] 1. A discharge electrode 4 is provided opposite to a side surface of a combustion wick 2 which is raised and exposed above a wick adjuster 1, and a discharge electrode 4 having a tapered flat plate portion 3 toward the combustion wick 2 is provided at a tip thereof. The tip of the tapered flat plate portion 3 of 4 is located slightly below the upper end 2a of the highest position of the combustion wick 2, and the counter electrode 5 facing the discharge electrode 4 is provided above the discharge electrode 4 for petroleum combustion. Ignition electrode structure. 2. The cut portion 3 is formed in the flat plate portion 3 of the discharge electrode 4.
The ignition electrode structure for a petroleum combustor according to claim 1, wherein a beard and fray at the tip of the combustion wick 2 are provided in the notch 3a by providing a.