JP3320909B2 - Cooker burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove burner in which a burner head (2) is mounted on a burner main body (1) and an outwardly directed flame passage (21) is formed on the outer periphery thereof. so,
The present invention relates to an improvement of a stove burner in which the burner body (1) is made of sheet metal.

[0002]

2. Description of the Related Art Conventional examples of this kind of burner are described in
This will be described with reference to FIG. In the embodiment shown in FIG. 2, an outwardly directed flame passage 210 is formed between the burner head 20 and the burner main body 10 at an upward slope. A flat portion 130 having a constant width perpendicular to the axis is formed. And the flat portion 130
The flame is sufficiently held by the flat surface 130, the outer peripheral end surface of the burner head 20, and the three surfaces of the lower surface of the jaw 240 protruding upward. At the time of fire extinguishing, the flame tends to remain in the U-shaped space s surrounded by the three surfaces, and there is a drawback that the embers fire back and emit a large fire extinguishing sound.

In FIG. 3 showing a different embodiment, a curved portion 140 is connected to the burner main body 10 at a downward gradient from the upper outer end toward the outer peripheral portion 150.
The burner head 20 is placed so as to be in contact with the top 141 of the burner 40, and the tip of the flame passage 210 is overhanged. A wedge-shaped gap c is formed between the tip of the flame port passage 210, which is the overhanging section, and the curved section 140, and the gap c provides a flame holding function for the flame a '. In this embodiment, when the curved portion 140 is pressed, the top 141 having a small radius of curvature is liable to be mainly subjected to processing distortion, and the distortion of the top 141 causes the top 141 and the flame passage. There is a possibility that a gap may be formed between the side wall 210 and the side wall end face. In this case, there is a risk that a gas a ′ having a uniform flame shape may not be obtained due to gas leakage from the portion. Was.

[0004]

The flat part 130 eliminates the flame holding function due to the presence of the flat part 130, thereby eliminating the risk of flashback. In addition, the part of the burner main body 10 which is in contact with the burner head 20 in the flame opening passage 210 is formed. This is to prevent distortion from occurring.

[0005]

In order to solve the above-mentioned drawbacks, a burner head 2 is provided on a lower outer peripheral portion of an inclined portion 12 provided on an upper outer peripheral side of a burner main body 1 formed by press working. The burner burner in which the flame port passage 21 having an upward slope is formed outward by mounting the inclined portion 22, a flat portion 23 substantially perpendicular to the axis at the lower outer peripheral end of the burner head 2. And the flat portion 2 having the same width as the flat portion 23 is provided at the upper outer peripheral end of the burner body 1.
3 and matching, the flat portion 13 substantially perpendicular to the axis of adhesion provided, the curved portion 14 that curves downward to slope from the flat part 13
Are provided with a stove burner connected to the outer peripheral portion 15.

[0006]

According to the above construction, there is no flame holding portion for the flame a 'as in the conventional example, and if the burner head (2) has a flange portion (24), the flange portion (24) and the flame outlet are provided. There is only a slight flame holding action at the intersection of the two surfaces with the outer peripheral surface of the passage, and there is little possibility that after-fire will occur during fire extinguishing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a stove burner according to the present invention will be described below with reference to FIG. Reference numeral 1 denotes a burner main body made of sheet metal bent by press working. A burner head 2 is mounted on an upper surface of the burner main body 1, and a flame port passage 21 described below is formed on a lower outer peripheral portion of the burner head 2. Is done. The lower outer peripheral portion of the burner head 2 has an upwardly sloped outwardly inclined portion 2.
2. Near the outer end of the inclined portion 22, a flat flat portion 23 substantially perpendicular to the axis is formed, and the inclined portion 22 and the flat portion 23 are formed.
Are formed at regular intervals in the circumferential direction, and a large number of narrow grooves 211 having a constant depth are formed at regular intervals.

The flat portion 2 is provided on the upper surface of the outer peripheral portion of the burner body 1.
When the flat portion 13 having the same size as the fixed portion 3 and having the same width is formed and the inner cylindrical portion 26 of the burner head 2 is mounted on the burner main body 1, the inclined portions 12 and 22 are brought into close contact with each other, and The part 13 and the flat part 23 are aligned with each other, and the flame port 21 is formed in close contact therewith. Further, the mixing chamber 11 in which the respective flame outlet passages 21 communicate is formed. Furthermore, it is formed so as to be continuous with the outer peripheral portion 15 at a gentle curved portion 14 than the flat portion 13, and also connected to the inclined portion 12 with a similar gentle curved surface in the inward direction.

A flange portion 24 is provided on the outer periphery of the upper portion of the burner head 2 so as to protrude outward from the outer end surface of the burner passage 21 so as to prevent the broth from entering the burner passage 21. In the figure,
22a is formed between the narrow grooves 211 and is a narrow groove shallower than the narrow grooves 211. An auxiliary flame port passage is formed in the middle of the flame port passage 21 by the narrow groove 22a. Performs a function of transferring a fire between flames a and a function of maintaining a certain amount of flame.
Reference numeral 25 denotes a cover for covering the center hole.

With the above-described structure, the gas burner according to the present invention is configured such that a gas valve (not shown) is opened to ignite mixed gas ejected outwardly from the mixing chamber 11 through the flame passage 21. , A flame a is formed. In the fire extinguishing operation of closing the gas valve, the flame a is only held at the outer end surface of the wall between the flame port passage 21 or the auxiliary flame port passage 22a and the lower surface of the flange portion 24, and the flame holding power is reduced. It is small and rarely ignites. Therefore, there is almost no risk of flashback, and there is almost no risk of generating a large fire extinguishing sound due to the afterburn. Since the flat portion 13 having a constant width is provided on the upper surface of the burner main body 1, a continuous portion between the flat portion 13 and the inclined portion 12 and the outer peripheral portion 15 inside the flat portion 13 can be formed into a gentle curved shape. And there is an advantage that processing distortion does not occur. In addition, although the thing which has the said collar part 24 was shown, the jaw part does not necessarily need to be provided.

[0011]

According to the above-described burner burner according to the present invention, a U-shaped space (s) or a long space surrounded by three surfaces is formed at the end of the burner passage (21) of the burner burner. There is no wedge-shaped gap (c), the holding power of the flame (a), that is, the flame holding capacity is not large, and the generation of a fire extinguishing sound is prevented. The burner portion of the burner main body 1 and the shape in the vicinity of the burner portion can be formed into a continuous shape with a gentle curved surface, and there is an effect of providing a practical burner that is easy to press work.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing one embodiment of a main part of the present invention.

FIG. 2 is a diagram corresponding to FIG. 1 showing a conventional example.

FIG. 3 is a diagram corresponding to FIG. 1 showing a different embodiment in the related art.

[Explanation of symbols]

 Reference Signs List 1 burner main body 11 mixing chamber 12 inclined portion 13 flat portion 14 curved portion 15 outer periphery 2 burner head 21 flame port passage 211 narrow groove 22 inclined portion 23 flat portion 24 flange portion a flame

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F23D 14/06

Claims (1)

(57) [Claims] 1. A burner main body 1 formed by press working.
The burner head 2 is attached to an inclined portion 12 provided on the upper outer peripheral side of the burner.
A burner burner in which an upwardly sloping flame port passage 21 is formed by mounting an inclined portion 22 provided on a lower outer peripheral portion of the burner head 2, an axial center is provided on a lower outer peripheral end portion of the burner head 2. And a flat portion 23 substantially perpendicular to the flat portion 23 and having the same width as the flat portion 23 at the upper outer peripheral end portion of the burner main body 1 and substantially perpendicular to the axial center which is in close contact with the flat portion 23. A stove burner provided with a portion (13), and a curved portion (14), which curves downwardly and sloped from the flat portion (13), is connected to the outer peripheral portion (15).