JPH11230511A - Outward flame hole ring burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent flame from extending by the shortage of secondary air, by providing the outer wall of a burner with some groups of flame holes, rather in nearly parallel with one another than in radial form from the center of the burner top when viewed from the top side of a burner. SOLUTION: An outward flame hole ring burner 15 is composed of a burner base 16 and a burner top 21, and those burner base 16 and burner top 21 constitute a ring-shaped duct 22. The duct 22 is provided with a cylindrical inner wall 23 and a cylindrical outer wall 25 where the burner top 21 is provided with many flame hole 24, and it is composed of a top cover and a bottom plate which connect those inner wall and outer wall 25 with each other. Then, many flame holes 24 are divided into the groups 31-1-31-6 of three each, and for those groups 31-1-31-6, three flame holes 24-a, 24-b, and 24-c are provided in parallel with one another at the outer wall. Hereby, the heat efficiency can be raised as a whole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outward flame ring burner suitably used for a gas range or the like.

[0002]

2. Description of the Related Art As shown in the cross-sectional view of FIG. 6, a conventional outward flame ring burner 1 for a gas range has flame holes radially provided on an outer wall 2 of the burner at equal intervals. For example, 36 flame holes are provided at 10 ° intervals.

In such an outward flame hole ring burner 1,
The flame 3 is uniformly formed on the outer peripheral surface of the burner 1, the suction of the secondary air is poor, and the flame 3 extends, and when the pan or the like is heated, the flame 3 hits the periphery of the pan and lowers the thermal efficiency. When the amount of fuel gas is reduced, the interval between the adjacent flames 4 is large and the flames cannot be supplemented with each other, and the range in which a small fire can be generated is narrow. Furthermore, a gas stove uses a pot with a pot or the like, but the flame 3 hits the legs of the pot and the heat in that portion is wasted.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an outward flame hole ring burner in which the secondary air is sufficiently sucked, the flame does not extend, and the small flame can be used stably. .

[0005]

SUMMARY OF THE INVENTION The present invention is a ring burner in which a plurality of flame holes are formed in groups smaller in number than the number of flame holes. An outward flame hole ring burner characterized in that it is provided on an outer wall of the burner at an angle closer to being parallel to each other than radially from the center of the burner top when viewed from the side.

According to the present invention, the plurality of flame holes are divided into a smaller number of groups than the flame holes, and the flame holes of at least some groups are closer to each other than radially from the center of the burner top when viewed from the burner top side. It is provided outside the burner at an angle close to parallel. For this reason, a portion without a flame hole is formed between the groups, and the secondary air is sucked from the portion, so that the flame does not extend due to a shortage of the secondary air. Further, since the intervals between the flame holes become close in the group, and the flames in the group have a mutual flame-reducing effect, the flame is stabilized even if the fire is small.

The present invention is also a ring burner in which a plurality of flame holes are formed in groups smaller in number than the number of flame holes, wherein some of the flame holes are mutually separated when viewed from the burner top side. An outward flame hole ring burner, which is provided on a burner outer wall in parallel.

According to the present invention, at least a part of the flame holes is provided on the outer wall in parallel when viewed from the burner top side. The flame holes of each group are provided in parallel with each other at an angle close to parallel to the burner outer wall, so that the interval between the flame holes between the groups on the burner outer peripheral surface is wider, the interval between the burners in the group is narrower, The secondary air is easily sucked from the gap between the burners, and the effect of supplementary flame between the burners in the group can be expected to be greater.

The present invention also relates to a ring burner in which a plurality of flame holes are formed in groups smaller in number than the number of flame holes, wherein some of the flame holes are formed on the outer side as viewed from the burner top side. The flame outlet ring burner is provided on the outer wall of the burner so as to reduce the interval.

[0010] In the burner hole according to the present invention, on the outer peripheral surface of the burner, the interval between the groups is wider, the interval between the burners in the group is narrower, and the efficiency is further increased.

The present invention is also a ring burner for forming a plurality of flame holes into groups smaller in number than the number of flame holes, wherein the flame holes provided at the end of each group and the adjacent group are formed. A fire transfer flame hole is provided at a lower portion between adjacent flame holes provided at an end of the flame.

According to the present invention, a fire transfer flame hole is provided at a lower portion between a flame hole provided at an end of each group and an adjacent flame hole provided at an end of an adjacent group. Even so, fire transfer between groups is improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a plan view, partially cut away, of a combustion apparatus 11 including an outward flame ring burner 21 according to an embodiment of the present invention. Fuel gas such as city gas is jetted from the nozzle 12 to the mixing pipe 14, and primary air is sucked from air holes 13 provided around the nozzle 12 by the jet energy of the fuel gas. The fuel gas and the primary air are sufficiently mixed in the mixing pipe 14 and supplied to the burner 15 from the center line.

FIG. 2 is a sectional view taken along section line II-II of FIG. 1, and FIG. 3 is a sectional view taken along section line III-III of FIG. The outward flame hole ring burner 15 includes a burner base 16 and a burner top 21, and the burner base 16 and the burner top 21 form a ring-shaped duct 22. The duct 22 has a cylindrical inner wall 23 and a large number of flame holes 24.
A cylindrical outer wall 25 provided on the burner top 21;
The burner top 21 and the burner base 16 are configured by an upper lid and a bottom plate that connect the inner wall 23 and the outer wall 25, and a middle point of the inner wall 23 and a lower portion of the flame hole 24 of the outer wall 25. The flame holes 24 are, for example, 12 groups 31-1, three by three.
, 31-12 (31 when collectively referred to). Each group, for example, 3 of group 31-1
The two flame holes 24-a, 24-b, 24-c are provided on the outer wall in parallel.

The flame formed by the three flame holes of each group 31 is denoted by reference numeral 33 when the supply amount of the fuel gas is sufficiently large.
As shown by -a and 33-b, one flame is formed. Between the groups, for example, between 31-2 and 32-3, there is a portion where the interval between the flame holes is large on the outer periphery of the ring burner 21, and here, the flame is formed. Is not formed, and the secondary air is supplied from here, so that there is no shortage of the secondary air and the flame does not extend for a long time. In FIG. 3, reference numerals of the cross sections are omitted to make the drawing easier to see.

When the supply amount of the fuel gas is small, that is, at the time of small fire combustion, each group, for example, the group 31
The flames formed by the −6 flame holes 24 are denoted by reference numerals 34a, 3
4b, 34c, each flame 34a, 3
A vortex indicated by a circle is generated between 4b and 34c, thereby supplementing the flames from the flame holes adjacent to each other and preventing a spark.

If the virtues leg 32 is provided outside a portion without a flame hole as shown by a chain line, the virtues leg 32 prevents waste of heat.

FIG. 4 is a sectional view of an outward flame ring burner 41 according to another embodiment of the present invention.
It is. The ring burner 41 of the present embodiment has a configuration similar to that of the ring burner 15 of the previous embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted. In the present embodiment, each group 42-1, 42-2,..., 42-1
2, for example, three flame holes 43a, 43b, 4 of 42-1
3c is provided so that the interval becomes narrower on the outer periphery of the ring burner 41. This makes the next group 42-2
The portion where the flame hole is not provided between is wider, and the interval on the outlet side of the flame hole in the group is configured to be narrower,
The effect described above becomes more remarkable.

In another embodiment of the present invention, a group of flame holes may be provided on the outer wall of the burner at an angle closer to the center of the burner top than the radiation and more parallel to the radiation.

FIG. 5 is an enlarged side view of the vicinity of a flame hole of an outward flame ring burner 50 according to still another embodiment of the present invention. One group 51-1 and an adjacent group 51
-2 flame holes 52a and 5 adjacent to each other at the end of
At the lower portion between the flame 2b and 2b, a fire flame 53 is provided.
The width L of the fire flame 53 is made sufficiently small to help the flame propagate from one group 51-1 to the adjacent group 51-2. In addition, the fire transfer flame hole 53 is shown in FIG.
May be continuous between the adjacent flame holes 52a and 52b as shown in FIG. 4 or may not be continuous as shown in FIG.

The outward flame ring burner 21 of the present invention shown in FIG. 3 and the outward flame ring burner 1 of the prior art shown in FIG.
(Both 36 holes) and the maximum load of 4500 kcal
/ H appliance, the range of stable small fire combustion is from 400 kcal / h of the prior art to 250 kcal.
/ H. For appliances with higher maximum loads,
There is an effect in the outward flame hole ring burner 41 of the present invention shown in FIG. 4, but there was almost no difference from that shown in FIG. 3 at about 4500 kcal / h.

[0022]

As described above, according to the present invention, a plurality of flame holes are divided into a smaller number of groups, and in some groups, each flame hole is positioned from the center of the burner top as viewed from the burner top side. Since it is provided on the outside of the ring burner at an angle closer to and parallel to the radiation than the radiation so that the interval is narrower at the outer circumference, there is a part where the interval between the flame holes is wide between each group. The secondary air is sucked, the flame is prevented from growing due to the lack of secondary air, and by placing the legs of Goku in this part, the goku is not heated,
Thermal efficiency can be improved as a whole. In addition, the interval between the flame holes becomes narrower within the group, and the flames between the groups complement each other, so that small fire combustion can be stably performed.

Further, by providing a fire flame at a lower portion between the flame holes between the groups, the fire can be easily performed from one group to an adjacent group.

[Brief description of the drawings]

FIG. 1 is a plan view, partially cut away, of a combustion apparatus 11 including an outward flame hole ring burner 21 according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along section line II-II in FIG. 1;

FIG. 3 is a sectional view taken along section line III-III in FIG. 2;

FIG. 4 is a sectional view of an outward flame hole ring burner 41 according to another embodiment of the present invention.

FIG. 5 is a side view of an outward flame hole ring burner 50 according to still another embodiment of the present invention.

FIG. 6 shows an outward flame ring burner 1 according to the prior art.

[Explanation of symbols]

 15, 41, 50 Outgoing flame hole ring burner 21 Burner top 22 Duct 23 Inner wall 24, 43, 52 Flame hole 25 Outer wall 31, 42, 51 Group of flame holes 32 Gotoku leg 33 Flame 34 Flame of small fire

Claims (4)

[Claims] 1. A ring burner in which a plurality of flame holes are divided into a smaller number of groups than the number of flame holes, wherein a part of the flame holes is formed at a center of the burner top when viewed from a burner top side. An outwardly directed flame hole ring burner, which is provided on an outer wall of the burner at an angle closer to being parallel to each other than radially. 2. A ring burner in which a plurality of flame holes are formed in groups smaller in number than the number of flame holes, wherein some of the flame holes are parallel to each other when viewed from the burner top side. An outward flame hole ring burner provided on an outer wall. 3. A ring burner formed by dividing a plurality of flame holes into groups smaller in number than the number of flame holes, wherein some groups of flame holes have an interval outside on a burner top side. An outward flame ring burner provided on an outer wall of the burner so as to be narrow. 4. A ring burner formed by dividing a plurality of flame holes into groups smaller in number than the number of flame holes, the flame holes provided at the end of each group and the end of an adjacent group. 4. An outwardly directed flame hole ring burner according to claim 1, wherein a fire flame hole is provided at a lower portion between adjacent flame holes provided in said flame burner.