JP3825230B2 - 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 of device, 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 installed on the window portion c as desired from the outside. And ignition was performed by performing discharge between the counter electrode g provided in the recessed part f of the upper end of the fuel core e.
[0003]
[Problems to be solved by the invention]
By the way, in this conventional thing, the window part c is obstruct | occluded by the fire pan part b and the discharge electrode d, and the fuel vapor from the fuel core e contacts the front-end | tip of the discharge electrode d or the insulator part h, and is liquefied. The evaporative fuel filled in c liquefied due to a temperature drop due to fire extinguishing, and this leaked outward from the gaps of each part by capillary action, causing odor.
[0004]
[Means for Solving the Problems]
This invention pays attention to this point, and in order to solve the above-mentioned drawbacks, in particular, the structure is provided with a vertically movable fuel core in a core guide cylinder composed of a core guide inner cylinder and a core guide outer cylinder, and further a core guide cylinder A combustion cylinder is placed on the top of the pan, and a window is provided below the pan of the core guide outer cylinder. The discharge electrode is located on the window, supported by a support bracket from the outside. And a notch portion that is continuous with the window portion is formed in the pan portion, and a protrusion is provided on either the bottom of the insulator of the discharge electrode or the upper surface of the support metal, and the support in the vicinity of the protrusion is further provided. An opening is formed in the metal fitting, and an air flow from the outside toward the discharge electrode is formed.
[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 the highest position that is the 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. By abutting the stepped portion 24 of the portion 17 and attaching the attachment piece 25 to the fixing bracket 18, the discharge electrode 19 is supported at a predetermined position by being pressed toward the core guide outer cylinder 3 side.
[0011]
Furthermore, two small protrusions 26 are provided at the top end portion of the support metal 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 26. Is formed with an opening 27. The opening 27 communicates with a gap 28 between the fixing metal fitting 18 and the core guide outer cylinder 3, and the gap 28 and the gap between the opening 27 and the bottom of the lever part 17 are provided. Outside air flows through the discharge electrode 19. On the other hand, a notch portion 29 communicating with the window portion 16 is formed in the pan 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 26 is provided on the side of the support fitting 21 to form the 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 risk of accidental discharge to the combustion tube 9 and poor ignition, 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, during combustion, outside air flows to the discharge electrode 19 of the window portion 16 through the gap 28 and the gap at the bottom of the insulator portion 17 due to the opening portion 27 and the protrusion portion 26, and evaporation of the fuel core 4 generated here. The fuel is supplied to the combustion portion through the cutout portion 29 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 the 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]
【The invention's effect】
As described above, according to the present invention, there is no ignition failure due to erroneous discharge to the combustion cylinder, the discharge electrode and the counter electrode plate are not exposed to a strong combustion flame, and no burning or discharge failure is caused. In addition, there is reliable and good discharge ignition over the window, and there is always air flow from the outside to the discharge electrode of the window, and it is possible to reliably prevent the generation of odor due to evaporating fuel, Good combustion without odor can be obtained.
[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 Fire tray part 9 Combustion cylinder 10 Recessed part 12 Counter electrode plate 16 Window part 19 Discharge electrode 21 Support metal fitting 26 Protrusion part 27 Opening part 28 Space | interval 29 Notch part

Claims (1)

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 the lower part, a window part is provided, and in this window part, the discharge electrode is positioned by being supported by a support bracket from the outside. Protrusions are provided on either the bottom of the insulator of the discharge electrode or the upper surface of the support metal, and an opening is formed in the support metal in the vicinity of the protrusion to form an air flow from the outside toward the discharge electrode. A discharge ignition device for oil burning appliances.

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