JP3347489B2 - Gas 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 gas burner for a gas cooker.

[0002]

2. Description of the Related Art Conventionally, as a gas burner of a gas cooker, for example, as shown in a conventional example of FIGS. 23 to 25, a burner main body A and a peripheral edge mounted on the burner main body A are shown. There is known a burner head B having a flange portion 2 for preventing clogging of a flame hole due to boiling over or the like.

[0003] In recent years, a gas burner in which the burner body A is made of sheet metal and the burner head B is forged is mainly used. Outer end upper edge 4 of mixing chamber 9
Requires a horizontal portion 4a and a bent portion 4b (hereinafter, referred to as an R portion), so that the upper end 4 of the outer end of the burner main body A projects outward from the flame hole end surface 1a of the burner head B and the flame hole 1
Is in a considerably recessed position in combination with the presence of the upper flange 2.

Therefore, in this type of gas burner, the primary air is about 30% to 50%, and an appropriate flame a is formed only when the secondary air comes into contact with the flame a in a necessary and sufficient manner. The flame a is the radius R of the outer edge 4 of the burner body A.
The flame is held by the portion 4b and the outer peripheral edge 2a of the flange portion 2 of the burner head B, and the flame extends outward from the R portion 4b of the outer end upper edge 4 of the burner body A and the outer peripheral edge 2a of the flange portion 2 of the burner head B. a is formed (see FIG. 23).

[0005] Therefore, the mixed gas ejected from the adjacent flame holes 1 flows from the flame hole end surface 1a to the outer end upper edge 4 of the burner body A.
R portion 4b and outer peripheral edge 2a of flange 2 of burner head B
(Hereinafter referred to as a flame holding portion), b interferes with each other and is diffused and mixed, so that the inner flame a 'of the flame a formed in the flame holding portion is barely separated, but the outer flame a ″ is formed. Adjacent outer flames a ″ stick together and are connected to each other (see FIG. 25).

[0006]

In the conventional gas burner, since the outer flame a "of the flame a is connected, the contact of the secondary air c with the flame a becomes flat, so that the flame a extends between the flames. Because of the shortage of secondary air due to intrusion, the burning of the fire is worsened due to the red fire and the extension of the flame a and the contact with and cooling of the pot or gorge, etc., so that the amount of CO increases. However, there is a problem that a fire extinguishing sound is also generated.

The present invention has been made in view of the above-mentioned problems of the prior art, and reliably separates adjacent flames so that necessary and sufficient secondary air comes into contact with the flames to improve flammability. It is intended for planning.

[0008]

In order to achieve the above object, a gas burner according to the present invention comprises a burner main body and a burner head mounted on the burner main body and having a plurality of flame holes formed on a peripheral edge thereof. In a gas burner provided with a flange to prevent clogging of the flame hole due to boiling over, etc., the burner head has a lower surface of the flange of the burner head, from the flame hole outlet to the outer peripheral edge.
Adjacent partitions consisting of protrusions or ribs with a length of
Located between the burner ports and feature in that integrally formed.

[0009]

[Action] gas burner of the invention having the above structure, mutually adjacent flames phase adjacent fire hole flame provided located between
Since the separation is ensured by the partition having the length from the hole outlet to the outer peripheral edge, a flame which is in good contact with the secondary air is formed. As a result, contact with secondary air is necessary and sufficient, and the burnability of the burner is improved.

[0010] Then, the divider projections or ribs Tona <br/> Rukoto, the working, the production can be carried out simply in conjunction with the improvement of the effect. As a result, a uniform product can be mass-produced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a gas burner according to the present invention will be described below with reference to the drawings.

In the embodiment, the present invention is applied to a stove burner of a gas table. In FIGS. 1 to 22, A denotes a burner main body, and a mixing pipe 6 having an expansion inlet 5 at a base end thereof;
An annular mounting portion 7 on which an after-mentioned burner head B is mounted on the upper surface
An annular mixing chamber 9 having a support portion 8 for positioning and supporting the burner head B is formed at the center portion thereof so as to communicate with each other and to be integrally formed. The outer end upper edge 4 is made of a two-part press-formed sheet metal having a horizontal portion 4a and an R portion 4b. Further, a damper 10 for adjusting primary air and a main gas nozzle 11 are provided at the base end widening inlet 5 of the mixing pipe 6 (see FIG. 1).

A burner head B has a flange 2 at its outer peripheral edge mainly intended to prevent clogging of a flame hole due to boiling over and the like, and also has a flange portion 2 for improving flame holding properties and fire transfer. A plurality of slit-shaped flame holes 12 forming the flame holes 1 are formed radially on the inner lower surface of the burner body 2, and the burner body A
A support tube 13 inserted and supported by the support portion 8 of the
The burner head B is forged (see FIG. 1 and FIG. 2).

The burner main body A and the burner head B are formed by inserting the support tube 13 of the burner head B into the support portion 8 of the burner main body A to position and support the burner head B with respect to the burner main body A. Burner head B on mounting section 7
Are placed in close contact with each other, a large number of the flame holes 1 formed by the flame hole groove 12 and the annular mounting portion 7 on the periphery thereof, and the secondary air formed by the support cylinder 13 in the center. A gas burner including the passage 15 is configured.

Reference numeral 3 denotes a partition for separating the flames a formed in the large number of flame holes 1 from each other in the gas burner having the above-described structure, and a projection or a rib is integrally provided on the lower surface of the flange portion 2 of the burner head B. It is formed by this.

The purpose of the partition 3 is to prevent the mixed gas ejected from the adjacent flame holes 1 from diffusing into the space b between the flame holding portions,
To prevent mixing, but depending on its shape,
For example, since the burner does not satisfy all of the CO characteristics, liftability, fire extinguishing noise, fire extinguishing, and flame clogging, it is desirable to adopt a shape most suitable for the performance required by the burner. In order to ensure the separation of the flame holes 1, they are located at the center between the adjacent flame holes 1, 1. Here, the shape of the partition is a general term for the width w, length 1, height h, vertical cross-sectional shape, horizontal cross-sectional shape, and the like of the partition 3.

A specific example of the shape of the partition 3 will be described below.

The partition 3 in the embodiment shown in FIGS.
And a length 1 from the flame hole end surface 1a to the outer peripheral edge 2a of the flange portion 2, and the width w is slightly narrower than that between the adjacent flame holes 1 and 1. A partition 3 having a shape is integrally formed on the lower surface of the flange portion 2. Partition 3 of this embodiment
In this case, since the partition 3 is protruded from an upper end portion between the adjacent flame holes 1 and the flame hole end surface 1a to the flame holding portion, the adjacent flames a are surely separated. In particular, excellent effects are exhibited in the liftability of the burner, fire transfer, and clogging of the burner holes (there is no influence on the clogging of the burner holes even if the partition 3 is provided, the same applies hereinafter). The sectional shape of the partition 3 in this embodiment viewed from the front is round at the lower part, but may be square or other sectional shapes.

The partition 3 of the embodiment of FIGS. 6 to 8 to the present invention
It is not the gist of this, but has a height h near the upper end of the flame hole 1 and has a gap between the flame hole end surface 1a as a short length l only near the outer end of the flange portion 2 and a width w Is formed integrally with the lower surface of the flange portion 2 with a partition 3 having a shape slightly narrower than the space between the adjacent flame holes 1 and 1. Although In the partition 3 in this example embodiment and substantially the same effect in the preceding Figures 1 to 5 is obtained,
Its effect is inferior in the separation of adjacent flames a
You .

The partition 3 in the embodiment shown in FIGS. 9 to 11 has a height h from the lower part of the flame hole 1 to the length l from the flame end face 1a to the outer peripheral edge 2a of the flange 2. A partition 3 having a width w and a narrow width of approximately half or less of the width between the adjacent flame holes 1 and 1 is integrally formed on the lower surface of the flange portion 2. In the partition 3 of this embodiment, the height h from the flame hole end face 1a between the adjacent flame holes 1 and 1 to the lower portion of the flame hole 1 reaching the flame holding portion.
A narrow partition 3 having a projection is provided to separate the flame a.
Of course, in particular, it has an excellent effect on the liftability of the burner, the fire extinguishing sound, the fire, and the clogging of the flame holes. Although the sectional shape of the partition 3 of this embodiment as viewed from the front is a tapered rectangular shape having a vertically long and narrow width suitable for the shape between the flame holes 1 and 1, other sectional shapes may be used.

The partition 3 in the embodiment shown in FIGS. 12 to 14 has a height h close to the lower end of the flame hole 1 and a length l from the flame hole end surface 1a to the outer peripheral edge 2a of the flange portion 2. A partition 3 having a width w slightly smaller than the width between adjacent flame holes 1 and 1
Are integrally formed on the lower surface of the flange portion 2. In the partition 3 of this embodiment, since the wide partition 3 is protruded, the separation of the flame a becomes more reliable, and the flame a which is in good contact with the secondary air is formed. It has an excellent effect on CO characteristics and fire extinguishing noise, and its effect is slightly inferior due to liftability, fire transfer and clogging of flame holes, but not so much as to hinder the performance of the burner. The sectional shape of the partition 3 of this embodiment as viewed from the front is a vertically long and wide tapered square shape that matches the shape between the flame holes 1 and 1. However, other sectional shapes may be used.

The partition 3 described above may have any shape as long as it prevents the mixed gas from diffusing and mixing. The vertical cross section of the shape may be, for example, as shown in FIG. ), (B), (c) in FIG.
(D), FIG. 17 (d), FIG. 18 (a), (b),
In addition to the square shape shown in (c), (c) in FIG. 15, (d), (a) and (b) in FIG. 16, (b) and (c) in FIG. (A), (b), or a part of the square shown in (a), (b) of FIG. 17 is formed into a convex curved surface, (d) of FIG. 19, a part of the square shown in FIG. 19 (d) is formed into a concave curved surface, and further, a central concave drum-shaped one shown in FIG. 17 (c), and FIG. It is also possible to use a drum-shaped one with a central bulge shown in ()).

The shape of the horizontal section of the partition 3 is as follows.
In addition to the angular shapes shown in FIGS. 21 (a) and 21 (c), the triangular shapes shown in FIGS. 21 (b) and 22 (a) or (d) in FIG. And (d) of FIG.
22 (b), a central concave drum shape shown in FIG. 22 (b), a wavy shape shown in FIG. 22 (c), and the like. Is also free.

Regarding the shape of the partition 3 exemplified above,
Any shape may be used as long as it exists between the flame holes and separates adjacent flames.However, the shape that best matches the performance required by the burner is selected, and by appropriately combining these, secondary air and It forms a flame with good contact and can be used according to the purpose of the burner.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that the present invention can be implemented in various modes without departing from the gist of the present invention. is there. For example,
In this embodiment, a gas burner including a burner body made of sheet metal and a burner head made of forging is exemplified, but the present invention can also be applied to a gas burner in which both the burner body and the burner head are made of casting.

[0026]

According to the gas burner of the present invention described above , the length of the adjacent flame from the outlet of the flame hole to the outer peripheral edge is increased.
The protrusions or ribs make sure that they are separated from each other so that necessary and sufficient secondary air comes into contact with the flame, so that the burnability of the burner is improved, and the burner is improved as in the conventional gas burner of this type. Next red fire is caused by lack of air, C
Problems such as increase of O, generation of fire extinguishing noise, and deterioration of liftability are reduced.

Further, the partition is because they form one <br/> body with projections or ribs, because its production is possible mass production of uniform products obtained do simply, and inexpensive in cost Become.

[Brief description of the drawings]

FIG. 1 is an overall sectional view showing one embodiment of a gas burner according to the present invention.

FIG. 2 is an overall elevation view of only the burner head.

FIG. 3 is a sectional view of a main part thereof.

FIG. 4 is a front view thereof.

FIG. 5 is an elevation view of only the burner head.

FIG. 6 is a sectional view of a main part of an embodiment having a different partition shape.

FIG. 7 is a front view thereof.

FIG. 8 is an elevation view of only the burner head.

FIG. 9 is a cross-sectional view of a main part of an embodiment of the present invention having a different partition shape.

FIG. 10 is a front view thereof.

FIG. 11 is an elevation view of only the burner head.

FIG. 12 is a sectional view of a main part having a different partition shape.

FIG. 13 is a front view thereof.

FIG. 14 is an elevation view of only the burner head.

FIG. 15 is a partial cross-sectional view showing an example of the shape of a vertical cross section of a partition.

FIG. 16 is a partial cross-sectional view showing an example of the shape of a vertical cross section of a partition.

FIG. 17 is a partial cross-sectional view showing an example of the shape of a vertical cross section of a partition.

FIG. 18 is a partial cross-sectional view showing an example of a shape of a vertical cross section of a partition.

FIG. 19 is a partial cross-sectional view showing an example of the shape of a vertical cross section of a partition.

FIG. 20 is a partial cross-sectional view showing an example of the shape of a vertical cross section of a partition.

FIG. 21 is a partial elevational view showing an example of the shape of the horizontal section of the partition.

FIG. 22 is a partial elevation view showing an example of the shape of the horizontal section of the partition.

FIG. 23 is a sectional view of only a main part of a conventional example.

FIG. 24 is a front view thereof.

FIG. 25 is an elevation view of only the burner head.

[Explanation of symbols]

 A Burner body B Burner head 1 Flame hole 2 Flange 3 Partition

──────────────────────────────────────────────────続 き Continued from the front page (56) References JP-A-54-67242 (JP, A) JP-A 63-134216 (JP, U) JP-A 62-98923 (JP, U) JP-A 50-67 30339 (JP, U) Actually open 63-197922 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23D 14/06

Claims (1)

(57) [Claims] 1. A burner body comprising: a burner main body; and a burner head mounted on the burner main body and having a plurality of flame holes formed on a peripheral edge thereof. The burner head has a flange portion for preventing clogging of the flame holes due to boiling over or the like. In the gas burner, the outer peripheral edge is formed on the lower surface of the flange of the burner head from the flame hole outlet.
Adjacent partitions consisting of protrusions or ribs of length up to
A gas burner characterized by being integrally formed and positioned between flame holes .