JP3872636B2 - Discharge ignition device for oil burning appliances - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discharge ignition device called electronic ignition used for a petroleum stove.
[0002]
[Prior art]
Conventionally, in this type, as shown in FIG. 7, a window portion c is formed below the pan portion b of the core guide outer cylinder a, and the discharge electrode d is desired to be externally provided on the window portion c. The discharge electrode d is mounted on the core guide outer cylinder a side by placing the discharge electrode d on the fixing bracket e and fixing the insulator portion f to the fixing bracket e so as to be wound around the mounting piece g. Met.
[0003]
[Problems to be solved by the invention]
By the way, in this conventional type, since the dimensional error as the parts of the core guide outer cylinder a and the discharge electrode d occurs, it is not always possible to attach them in close contact with each other, and unnecessary air flows into the gap and abnormal combustion occurs. This causes problems such as causing the ignition failure due to various positions of the discharge electrode d.
[0004]
[Means for Solving the Problems]
The present invention focuses on this point and solves the above-mentioned drawbacks. In particular, in the present invention, in claim 1, a vertically movable fuel core is provided in a core guide cylinder comprising a core guide inner cylinder and a core guide outer cylinder. In addition, in a discharge ignition device for an oil combustion appliance, a combustion cylinder is placed on the top of the top of the core guide cylinder, and a discharge electrode is desired in a window formed below the top of the core guide outer cylinder. The discharge electrode has an insulator portion having a stepped portion, and a concave portion is formed at the upper end of the fuel core so as to be lower than the pan portion at the highest ignition position, and through the window portion. A fixing metal fitting for fixing the insulator portion of the discharge electrode so that the discharge electrode is positioned opposite to the concave portion and one end of the counter electrode is fixed to the centering band and the fuel electrode of the concave portion is brought close to the discharge electrode; A through hole that penetrates the rear side of the lever part, and a bulge that is provided on both sides of the through hole and that contacts the step part of the lever part. A support piece having a contact piece formed by projecting the part toward the step part and an attachment piece for fixing the insulator part to the fixing metal part, and the step part of the insulator part is pressed against the bulging part to discharge the electrode The entire contact piece is made of an elastic piece so that it is attached in close contact with the window portion while being entirely pushed into the core guide outer cylinder side.
Further, in claim 2 according to claim 1, the support metal fitting has a protrusion provided at the top end portion on which the insulator portion of the discharge electrode is placed, and an opening formed on the rear side of the protrusion. And the outside air flowing through the discharge electrode through the gap between the fixing bracket and the core guide outer cylinder and the opening and the gap between the protrusion and the bottom of the insulator, A notch portion is formed to be supplied to the combustion portion and burned.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, a discharge type ignition device for an oil burning appliance according to the present invention will be described with reference to an embodiment shown in the drawings.
Reference numeral 1 denotes a core guide cylinder composed of a core guide inner cylinder 2 and a core guide outer cylinder 3. The core guide cylinder 1 is provided with a fuel core 4 which can be moved up and down inside, and further, an inner cylinder 6 and an intermediate cylinder 7 are provided at the upper end of the pan 5. An inner cylinder 6 and an intermediate cylinder 7 of a multi-cylinder combustion cylinder 9 comprising an outer cylinder 8 and an outer cylinder 8 are placed.
[0006]
Reference numeral 10 denotes a recess formed at the upper end of the fuel core 4, which is formed so as to be lower than the baking pan 5 even at the highest position that is the ignition position of the fuel core 4. The tip of the counter electrode plate 12 with one end fixed is located from the core guide outer cylinder 3 side.
[0007]
The counter electrode plate 12 is formed in an R shape as a whole along the outer periphery of the fuel core 4, and has a hook piece 13 and a bent piece 14 for fixing to the core stopper band 11 at the lower part and a fuel piece at the upper part. A counter electrode portion 15 that is bent from the outer peripheral direction of the core 4 into the recess 10 is formed.
[0008]
Reference numeral 16 denotes a highest position that is an ignition position of the fuel core 4, which is a window portion formed of an opening formed in the core guide outer cylinder 3 facing the recess 10, and the insulator portion 17 is fixed to the fixing bracket 18 through the window portion 16. The discharge electrode 19 fixed in step 1 is positioned so as to face the concave portion 10, and the counter electrode portion 15 of the counter electrode plate 12 approaches the fuel core 4 of the concave portion 10.
[0009]
Reference numeral 20 denotes a flange portion provided on the outer periphery of the flame tray portion 5 of the core guide outer cylinder 3, and forms a gap for air circulation between the lower end of the outer cylinder 8 of the combustion cylinder 9.
[0010]
Reference numeral 21 denotes a support fitting for supporting the insulator portion 17 and positioning the discharge electrode 19 on the window portion 16. The support fitting 21 includes a through hole 22 that penetrates the thin rear side of the insulator portion 17. The contact piece 23 is in contact with the stepped portion 24, and each of the contact pieces 23 is formed with a bulging portion 25 projecting toward the stepped portion 24, and the entire contact piece 23 is an elastic piece. The contact piece 23 is fixed by the attachment piece 26 that winds and fixes the portion 17, whereby the stepped portion 24 of the lever portion 17 is pressed by the bulging portion 25, and the entire discharge electrode 19 is moved to the core guide outer cylinder 3 side. It is attached in close contact with the window 16 in the pushed state.
[0011]
Furthermore, two small protrusions 27 are provided at the top end portion of the upper surface of the support fitting 21 on which the lever part 17 is placed so that a gap is formed between the lever part 17 and on the rear side of the protrusion 27. Is formed with an opening 28. The opening 28 communicates with an interval 29 between the fixing bracket 18 and the core guide outer cylinder 3, and through the gap 29 and the gap between the opening 28 and the bottom of the lever portion 17, Outside air flows through the discharge electrode 19, while a notch portion 30 communicating with the window portion 16 is formed in the pan portion 5 above the discharge electrode 19, and the inflowed air is combusted. The fuel is supplied to the combustion part at the upper end of the lead 4 and burned.
[0012]
Here, the protrusion 27 is provided on the side of the support fitting 21 to form a gap. However, a protrusion may be provided on the bottom of the lever part 17 to form the gap.
[0013]
Next, the operation of the embodiment of the present invention will be described.
If the fuel core 4 is now raised and raised to the highest position, which is the ignition position, the recess 10 is positioned together with the counter electrode plate 12 in the window 16 from which the discharge electrode 19 projects.
[0014]
If an ignition switch (not shown) is pressed and the discharge electrode 19 is energized for a certain period of time, a discharge is performed from the discharge electrode 19 toward the counter electrode portion 15 of the counter electrode plate 12. The fuel core 4 at the upper end of the recess 10 is ignited, which is ignited around the entire periphery of the upper end of the fuel core 4, and the heating power can be freely adjusted in the range where the upper end of the fuel core 4 is on the pan 5. It can be done.
[0015]
Therefore, since the ignition part is in the core guide tube 1 below the pan 5, there is no fear of accidentally discharging the combustion tube 9 and causing ignition failure, and the discharge electrode 19 and the counter electrode are always in a strong combustion flame. The plate 12 is not exposed and does not burn out or cause poor discharge even when used for a long period of time, so that reliable and good ignition can always be obtained.
[0016]
Further, at the time of combustion, outside air flows to the discharge electrode 19 of the window portion 16 through the gap 29 and the gap at the bottom of the insulator portion 17 by the opening portion 28 and the protrusion portion 27, and evaporation of the fuel core 4 generated here. The fuel is supplied to the combustion portion through the cutout portion 30 of the pan 5 and burned. The evaporated fuel does not adhere to the discharge electrode 19 and the tip of the insulator portion 17 and is not liquefied, and always during combustion. Since this flow is made, the evaporative fuel does not fill the window portion 16, so that it does not ooze out and cause odor, and good combustion can always be obtained.
[0017]
Further, since the discharge electrode 19 is attached while being always pressed against the core guide outer cylinder 3 side by the elastic force of the contact piece 23 of the support fitting 21, there is no dimensional error as a component of the core guide outer cylinder 3 or the discharge electrode 19. Even if it occurs, the discharge electrode 19 is always attached in close contact with the window portion 16, and there is no problem that abnormal combustion occurs due to unnecessary air inflow, and the position of the discharge electrode 19 is always a constant position. Is ensured, and a good discharge ignition can be obtained without fear of causing an ignition failure.
[0018]
【The invention's effect】
As described above, according to the present invention, in the first aspect, the discharge electrode is attached while being always pressed against the core guide outer cylinder side by the elastic force of the contact piece of the support metal fitting. Even if a dimensional error occurs, the discharge electrode is always attached in close contact with the window portion, and there is no problem that abnormal combustion occurs due to unnecessary air inflow, and the position of the discharge electrode is A constant position is always ensured, and good discharge ignition can be obtained without fear of causing ignition failure.
According to the second aspect of the present invention, since the discharge electrode is mounted while being always pressed against the core guide outer cylinder side by the elastic force of the contact piece of the support metal, a dimensional error as a part of the core guide outer cylinder or the discharge electrode occurs. However, the discharge electrode is always attached in close contact with the window portion, and there is no problem that abnormal combustion occurs due to unnecessary air inflow, and the position of the discharge electrode is always kept constant, Good discharge ignition can be obtained without worrying about defects, and the outside air can be passed through the gap between the fixing bracket and the core guide outer cylinder and the gap at the bottom of the insulator due to the opening and protrusion. The fuel core evaporative fuel generated here is supplied to the combustion portion through the notch portion of the pan and burned, so that the evaporative fuel adheres to the tip of the discharge electrode and the insulator portion and liquefies. And always during the combustion Since the can, so that there is no also filled in the window portion evaporative fuel, without cause of the odor seeps outward, is always that it is possible to obtain a good combustion.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of an oil combustion apparatus with an embodiment of the present invention.
FIG. 2 is a horizontal sectional view of the main part.
FIG. 3 is a front view of the main part.
FIG. 4 is a perspective view of the same fuel core.
FIG. 5 is a front view of the counter electrode plate.
FIG. 6 is a perspective view of the discharge electrode and a support metal fitting.
FIG. 7 is a cross-sectional view of a main part showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 core guide cylinder 2 core guide inner cylinder 3 core guide outer cylinder 4 fuel core 5 flame tray part 9 combustion cylinder 10 recessed part 12 counter electrode plate 16 window part 19 discharge electrode 21 support metal fitting 22 contact piece

Claims (2)

A vertically movable fuel core is provided in a core guide cylinder composed of a core guide inner cylinder and a core guide outer cylinder. Further, a combustion cylinder is placed on the top of the core guide cylinder at the upper end of the core guide cylinder. In a discharge ignition device for an oil burning appliance that requires a discharge electrode in a window formed below the discharge electrode , the discharge electrode has an insulator portion having a stepped portion, and the upper end of the fuel core has an uppermost portion. A counter electrode portion and a recess portion of a counter electrode plate having a concave portion formed so as to be lower than the pan portion at the rising ignition position, the discharge electrode being positioned to face the concave portion through the window portion, and one end fixed to a centering band A fixing metal fitting for fixing the insulator part of the discharge electrode so as to approach on the fuel core, a through hole penetrating the rear side of the insulator part of the discharge electrode, and a step of the insulator part provided on both sides of the through hole. An abutment piece formed by projecting a bulging part that abuts the part toward the stepped part side, and an attachment piece for fixing the insulator part to the fixing bracket, The entire contact piece so that the stepped portion of the insulator portion is pressed against the bulging portion and the entire discharge electrode is pressed into the core guide outer cylinder side so as to be attached in close contact with the window portion. A discharge ignition device for an oil burning appliance, characterized in that an elastic piece is used. The support metal fitting has a protrusion provided on the top end portion on which the insulator portion of the discharge electrode is placed, and an opening formed on the rear side of the protrusion. A notch for supplying the external air flowing through the discharge electrode through the gap between the outer cylinder and the opening and the protrusion and the bottom of the insulator to the combustion part at the upper end of the fuel core and burning it. The discharge type ignition device for an oil burning appliance according to claim 1, wherein the discharge type ignition device is formed.

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