JPH09112838A - Burner for cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely implement ignition regardless of set state of a burner cap by arranging a target opposing to an igniting electrode in a portion to which gas is injected from an igniting burner port within a window opening. SOLUTION: A window opening 16 is formed in a flat portion 14 and an igniting burner port 17 opened toward an inside of the window opening 16 is provided in a bottom face of the flat portion 14 and a gas passage for supplying gas from a distribution chamber to the igniting burner port 17 is provided. In a port to which gas is injected from the igniting burner port 17 a target 5 integrally formed with an upper plate 1a of a burner main body 1 is arranged. In a lower portion of the flat portion 14 an igniting electrode is disposed with a specified discharging gap provided against the target 5 and ignition is implemented by spark discharge between the igniting electrode and the target 5. Because a constant amount of gas is injected from the igniting burner port 17 regardless of set state of a burner cap 2, ignition can be implemented without failure and fire is transferred to gas flowing to the burner port.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove burner comprising a burner body having a mixing tube portion and an annular burner head portion, and a burner cap mounted on the upper surface of the burner head portion. The present invention mainly relates to a burner body made of sheet metal.

[0002]

2. Description of the Related Art Conventionally, as this type of stove burner, a burner body made of sheet metal is used which is formed by joining two press-molded upper and lower plates to each other to form a mixing pipe section and an annular burner head section. Is known.

By the way, when the ignition electrode is arranged outside the burner body, spilled juice or the like may be applied to the ignition electrode to cause an ignition error. Therefore, in the stove burner as described above, as shown in FIG. 8, a flat portion, which is a dividing portion of the distribution chamber extending in the circumferential direction in the burner head portion a, is formed in a portion in the circumferential direction of the burner head portion a. b is provided between the burner head portion a and the burner cap c to form a general flame hole portion located on the distribution chamber and a flame hole portion d located on the flat portion b for ignition by ignition. It is also known that a window hole e is formed in the flat portion b, and an ignition electrode f is arranged below the flat portion b so as to face the window hole e so that spilled juice or the like is not applied to the ignition electrode f. Has been.

In this case, the target g located in the flame hole portion d is formed on the lower surface of the burner cap c, and the spark discharge is generated through the window e between the ignition electrode f and the target g. Thus, the gas flowing in the flame hole portion d is ignited, and the flame in the flame hole portion d is set to ignite the general flame hole portion.

[0005]

By the way, the burner cap c is sometimes removed from the burner head part a for cleaning, but when the burner cap c is reset, the burner cap c is slightly floated from the burner head part a. It may be set, and in this case, the amount of gas supplied to the flame hole portion d for ignition by ignition may become excessive and the reliability of ignition may be impaired.

Further, in the above-mentioned conventional example, since the target g needs to be arranged in the flame hole portion d on the flat portion b, the lower end of the target g is located above the upper surface of the flat portion b, Therefore, it is necessary to shift the ignition electrode f by that amount. When the ignition electrode f is shifted upward in this way, the distance between the ignition electrode f and the peripheral portion of the window hole e becomes shorter. If this distance becomes shorter than the discharge gap between the ignition electrode f and the target g, spark discharge may occur between the edge of the window hole e and the edge of the window hole e. Inevitably, the part must be kept away from the ignition electrode f. As a result, the width of the window hole in the circumferential direction is increased, and the width of the flame hole portion d for the ignition of ignition is also increased. Here, the flame of the flame transfer ignition flame d is different in size from the flame of the general flame flame formed between the burner cap and the burner cap on the distribution chamber. When the width of the portion d in the circumferential direction increases, the uniformity of heat distribution in the circumferential direction of the burner is impaired.

In view of the above points, the first object of the present invention is to enable reliable ignition regardless of the set state of the burner cap, and even if the window hole is made small. A second problem is to prevent the discharge error from occurring and to reduce the circumferential width of the flame hole portion for fire transfer ignition.

[0008]

In order to solve the above-mentioned first problem, according to the present invention, a burner body having a mixing pipe section and an annular burner head section, and a burner cap mounted on the upper surface of the burner head section are provided. A stove burner composed of a burner head part and a burner head part and a burner head part and a burner head part provided in a circumferential direction part of the burner head part. A general flame hole portion located on the distribution chamber and a flame hole portion for flame transfer ignition located on the flat portion are formed between the cap and the flat portion, and a window hole is opened in the flat portion. In what arranges the ignition electrode facing the window hole from the lower side, the flat portion is provided with an ignition flame hole opening toward the inside of the window hole, and a gas passage for supplying gas from the distribution chamber to the ignition flame hole, In the part where the gas is ejected from the ignition flame hole in the window hole, face the ignition electrode. It is arranged a target to be.
In this case, it is desirable that the ignition flame hole is provided on the lower surface side of the flat portion so that the second problem can be solved.

According to the present invention, even if the burner cap is set in a floating state, a certain amount of gas is ejected from the ignition flame hole and is ignited without mistake, and the flame is used for transfer ignition. The gas flowing through the hole is reliably transferred and ignited, and the reliability of ignition is improved.

Further, if the ignition flame hole is provided on the lower surface side of the flat portion as described above, gas will be ejected from the ignition flame hole into the window hole below the flat portion, and therefore the ignition flame hole will be discharged. The position of the target placed in the gas jetting part is below the upper surface of the flat portion. Therefore, the ignition electrode, which is arranged below the target with a required discharge gap, is moved away from the peripheral portion of the window hole, and even if the window hole is made small, sparks are generated between the ignition electrode and the peripheral portion of the window hole. A sufficient gap can be secured to prevent discharge. Therefore, it becomes possible to reduce the circumferential width of the flat portion, that is, the flame hole portion for fire transfer ignition,
The uniformity of heat distribution in the circumferential direction of the burner can be improved.

When the burner main body is made of sheet metal which is formed by press-molding two upper and lower plates, the flat portion has two upper and lower plates.
If at least one of the plates is recessed in a direction away from the other to form the ignition flame hole and the gas passage, separate parts such as a pipe forming the ignition flame hole and the gas passage become unnecessary, and Costs can be reduced by reducing the number of points.

Further, a target may be formed on the lower surface of the burner cap so as to be inserted into the window hole, but in this case, the positional relationship of the target with respect to the ignition electrode is deviated due to the displacement of the burner cap. Therefore, it is desirable to form the target on the burner body.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIG.
A burner body having 0 and an annular burner head portion 11,
Reference numeral 2 denotes a die-cast burner cap placed on the upper surface of the burner head 11, and the burner body 1 and the burner cap 2 constitute an external flame type stove burner that forms an outward flame. Reference numeral 20 in the drawing denotes a heat shield ring formed on the burner cap 2 into which a pan bottom temperature sensor (not shown) is inserted.

The burner body 1 is made of sheet metal, and as shown in FIGS. 2 to 4, two upper and lower plates 1a, 1 are press-molded.
It is configured by joining b. The burner head 11 has a distribution chamber 12 extending in the circumferential direction, and a gas outlet 13 from the distribution chamber 12 is formed in the upper plate 1a. Then, between the burner head portion 11 and the burner cap 2, the teeth 21 on the lower surface of the burner cap 2 are located on the distribution chamber 12.
Thus, a large number of general flame holes 3 are formed at intervals in the circumferential direction, and the gas from the distribution chamber 12 is ejected outward from the general flame holes 3 through the gas outlet 13.

In a part of the burner head portion 11 in the circumferential direction,
A flat portion 14 that serves as a dividing point of the distribution chamber 12 is provided, and a flame hole portion 4 for ignition of ignition by ignition located on the flat portion 14 is formed between the burner head portion 11 and the burner cap 2. In the portion of the burner cap 2 that matches the flame hole portion 4, there are formed teeth 22 that are radially inward and a narrow groove 23 that extends inwardly in the circumferential direction. A limited amount of gas is supplied to the flame hole portion 4 from 13 through the groove 23 and the gap between the teeth 22. Further, the burner cap 2 does not have teeth located radially outward of the flame hole portion 4, and thus a flame that spreads in the circumferential direction is formed in the flame hole portion 4, and a general flame is formed. The gas ejected from the hole 3 is satisfactorily transferred and ignited.

The burner cap 2 is formed with protrusions 24 located on both sides in the circumferential direction of the flame hole portion 4, and protrusions are formed on the rising portions 15 formed on both sides in the circumferential direction of the flat portion 14 of the burner head portion 11. The burner cap 2 is positioned with respect to the burner head portion 11 by engaging 24 with each other.

A window hole 16 is formed in the flat portion 14, and an ignition flame hole 17 that opens toward the inside of the window hole 16 is provided on the lower surface of the flat portion 14 and is distributed in the ignition flame hole 17. A gas passage 18 for supplying gas from the chamber 12 is provided. Thus, the gas is ejected from the ignition flame hole 17 into the window hole 16 at a position below the upper surface of the flat portion 14.

The ignition flame holes 17 and the gas passages 18 may be formed by pipes separate from the burner body 1, but in the present embodiment, the lower plate 1b of the burner body 1 is formed in the flat portion 14. The ignition flame hole 17 and the gas passage 18 are formed by being depressed downward so that the number of parts can be reduced and the cost can be reduced.

A target 5 integrally formed with the upper plate 1a of the burner body 1 is arranged at the gas ejection portion from the ignition flame hole 17 in the window hole 16, as clearly shown in FIG. Further, the ignition electrode 6 is disposed below the flat portion 14 with a required discharge gap with respect to the target 5, and the spark discharge between the ignition electrode 6 and the target 5 causes a gas from the ignition flame hole 17 to be generated. I'm trying to ignite.

By the way, if the gas flowing through the flame hole portion 4 for ignition of ignition is directly ignited, when the burner cap 2 is set in a floating state, the amount of gas supplied to the flame hole portion 4 is excessive. However, according to the above configuration, a certain amount of gas is ejected from the ignition flame hole 17 regardless of how the burner cap 2 is set. The gas is ignited without a mistake, and the flame reliably transfers and ignites the gas flowing through the flame hole portion 4.

Further, since the gas ejection portion from the ignition flame hole 17 is located below the upper surface of the flat portion 14 as described above, the target 5 arranged at this ejection portion also has the flat portion 14.
The ignition electrode 6 which is located below the upper surface of the target 5 and has a required discharge gap below the target 5.
Is far from the flat portion 14. Therefore, the window hole 16
Even if it is formed small, a sufficient gap can be secured between the peripheral portion and the ignition electrode 6 to prevent spark discharge between the two. Here, if the window hole 16 is made smaller, the size of the flat portion 14 that opens the window hole 16, that is, the size of the flame hole portion 4 for transfer ignition can also be made smaller. Thus, the circumferential width of the flame hole portion 4 can be narrowed as much as possible without impairing the fire transfer property to the general flame hole portion 3.

In the above embodiment, the target 5 is formed on the upper plate 1a, that is, the burner body 1, but the target 5 may be formed on the burner cap 2 so as to be inserted into the window hole 16. Is. However, since the burner cap 2 is set with some play in the circumferential direction with respect to the burner head portion 11, if the target 5 is formed on the burner cap 2, the target 5 with respect to the ignition electrode 6 will not be formed.
There is a case that the positional relationship of is misaligned and the spark discharge cannot be performed properly. On the other hand, if the target 5 is provided in the burner body 1 as in the above embodiment, the burner body 1
On the other hand, since the ignition electrode 6 is held at a fixed position, the positional relationship between the target 5 and the ignition electrode 6 is also kept constant, and the above-mentioned problems do not occur.

FIG. 6 and FIG. 7 show a second embodiment in which a concave groove is formed on the lower surface of the tooth 22 provided at the center of the flame hole portion 4 for fire transfer ignition radially inward. And the top plate 1
a is depressed upward so as to enter the concave groove, and the ignition flame hole 17
Is formed. Gas is supplied to the ignition flame hole 17 through a gas passage 18 which is formed by denting the lower plate 1b downward and is continuous with the distribution chamber 12. Further, a target 5 integrally formed with the upper plate 1a is arranged at a gas ejection portion from the ignition flame hole 17 in the window hole 16. Even with this, regardless of how the burner cap 2 is set, the ignition flame hole 1
Since a certain amount of gas is ejected from 7, the gas from the ignition flame hole 17 is ignited without mistake due to the spark discharge between the ignition electrode 6 and the target 5. However, in this case, since the target 5 has to be arranged above that of the above-described embodiment, the arrangement position of the ignition electrode 6 is displaced upward,
In order to prevent electric discharge between the ignition electrode 6 and the peripheral portion of the window hole 16, it is necessary to make the window hole 16 large.

Although the embodiment in which the present invention is applied to the external flame type stove burner has been described above, the present invention can also be applied to the internal flame type stove burner which forms an inward flame. Also,
In the above embodiment, the burner body 1 is made of sheet metal, but the present invention can also be applied to a stove burner that uses a caster burner body.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment of a burner according to the present invention.

[Fig. 2] Bottom view of the burner

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3;

FIG. 5 is a perspective view of a main part of the first embodiment.

FIG. 6 is a cross-sectional view of a main part of the second embodiment.

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

FIG. 8 is a sectional view of a main part of a conventional example.

[Explanation of symbols]

1 Burner body 1a Upper plate 1b Lower plate 10 Mixing pipe part 11 Burner head part 12 Distribution chamber 14 Flat part 16 Window hole 17 Ignition flame hole 18 Gas passage 2 Burner cap 3 General flame hole part 4 Flame transfer ignition flame hole part 5 Target 6 ignition electrode

Claims (4)

[Claims] 1. A stove burner comprising a burner main body having a mixing tube portion and an annular burner head portion, and a burner cap mounted on the upper surface of the burner head portion, wherein the burner head has a circumferential direction. In a part of, a flat portion which is a dividing point of the distribution chamber extending in the circumferential direction in the burner head portion is provided, and between the burner head portion and the burner cap, a general flame hole portion located on the distribution chamber, A flame hole portion for ignition of ignition that is located on the flat portion is formed, and a window hole is opened in the flat portion, and the ignition electrode facing the window hole is arranged from the lower side of the flat portion. , An ignition flame hole that opens toward the inside of the window hole and a gas passage for supplying gas from the distribution chamber to the ignition flame hole, and the gas ejection portion from the ignition flame hole inside the window hole faces the ignition electrode. Place a target to Na. 2. The stove burner according to claim 1, wherein the ignition flame hole is provided on a lower surface side of the flat portion. 3. The burner main body is made of sheet metal composed of two upper and lower plates which are press-molded, and at least one of the upper and lower two plates is recessed in the flat portion in a direction separating from the other to form the ignition flame hole and the ignition flame hole. The stove burner according to claim 1 or 2, which forms a gas passage. 4. The stove burner according to claim 1, wherein the target is formed on a burner body.