JPH0463285B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a burner device in which flame transfer ignition is carried out from one burner to the other burner among two concentrically arranged inner and outer annular parent-child burners. Regarding.

(Prior Art) As shown in FIG. 17, a conventional device of this type has an annular master burner a having a flame hole d only on its outer circumferential surface, and an inner slave burner b concentrically disposed within the annular master burner a. , b to provide a secondary air intake interval 〓c. Here, assuming that an igniter is placed near the child burner b, the igniter is activated to first ignite the child burner b, and then the flame of the child burner b transfers and ignites the parent burner a, causing both burners to ignite. ignite.

(Problem to be Solved by the Invention) However, in the above-mentioned conventional device, if a sufficient interval is secured as the secondary air intake interval 〓c, the flame of one burner, child burner b, and the other burner, parent burner Since the distance between the flame hole d of a and the flame hole d becomes long at any part of the circumference, a problem arises in that the flame of the child burner b cannot be transferred to the parent burner a properly unless the flame of the child burner b is enlarged as a whole. .

On the other hand, in order to improve the flame transfer to the master burner a, the secondary air intake interval 〓c is narrowed and the slave burner b
When the flame is brought close to the flame hole d of the main burner a, the amount of air taken in from the secondary air intake interval c for combustion in the child burner decreases, and the combustion condition of the child burner b becomes poor. occurs.

Incidentally, although flame transfer can be improved by setting the position of the child burner eccentrically from the center of the parent burner, the problem arises that the uniformity of the heat distribution of the burner as a whole is hindered, so it is difficult to adopt this configuration. Can not.

(Means for Solving the Problems) The present invention aims to provide an apparatus that eliminates the above-mentioned disadvantages, and in which inner slave burners are arranged concentrically within an annular master burner having flame holes only on the outer peripheral surface. In a burner device in which a secondary air intake space is provided between both burners, and ignition is caused by transfer of flame from one burner to the other burner, at least one of the burners is The burner is characterized in that the flames formed in a plurality of flame holes equally spaced in the circumferential direction are brought close to the flame holes of the other burner.

(Function) The present invention has the above configuration, and according to this, the flame of one of the two burners and the flame hole of the other burner are brought close to each other at least in one place, so that the secondary air is To improve flame transfer from one burner to another burner while maintaining good combustion performance in a slave burner without narrowing the intake interval.

(Example) Next, an example of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes an annular, large-capacity parent burner, in which a plurality of protrusions 4 are arranged at appropriate intervals on the lower surface of the outer periphery at the upper opening of an internal gas distribution chamber 3A connected to the mixing tube 2. The burner cap 5 is placed on the burner cap 5, and the flame holes 6 are formed within the mutual intervals between the protrusions 4, so that the flame holes 6A are formed only on the outer peripheral surface of the parent burner 1. On the other hand, 7 indicates a child burner having a small capacity and located at the center of the parent burner 1,
The child burner 7 is arranged concentrically in two layers, inside and outside, so that it is located in a space surrounded by the gas distribution chamber 3A of the parent burner 1 with a gap 8 between them. In addition, secondary air is taken in from the gap 8 between the parent and child burners 1 and 7,
By the igniter P installed near the child burner 7,
First, the child burner 7 is ignited, and then gas is sent to the main burner 1, and then the main burner 1 is ignited by the flame of the child burner 7. By adjusting the flame with an operator (not shown), the intensity of the fire can be selectively adjusted in stages from the minimum to the maximum.

In the present invention, the flame of one of the parent and child burners 1 and 7 and the flame hole of the other burner are made to approach each other at least in one place. As shown in FIG. 4, three flame holes 6B1, 6B1, 6B1 located at 120 degree intervals among the flame holes of the child burner 7 are projected outward from other flame holes 6B2, 6B2... let me,
As a result, as shown in FIG. 5 and FIG.
Distance L between 2, 6B2... and flame hole 6A of main burner 1
I made it smaller than 2.

In addition, as shown in FIGS. 7 and 8, three flame holes 6B1, 6B1, 6B1 located at 120 degree intervals among the flame holes of the child burner 7 are replaced with flame holes 6B2, 6B1 in other places, 6B2...Make the diameter larger, or make the flame hole of the main burner 1 larger as shown in Figs. 9 and 10.
Make recesses in three locations located at 120 degree intervals to shorten the distance from the center, and open the flame hole 6A1 at that location.
The distance L3 between 6A1, 6A1 and the flame hole 6B of the child burner 7 is made shorter than the distance L4 between the flame hole 6B of the child burner 7 and the flame hole 6A2, 6A2 at other locations, or Child burner 7 as shown in the figure
The three flame holes located at 120 degree intervals among the flame holes of the main burner 1 are made to protrude, and the position of the flame holes of the main burner 1 is recessed in the part corresponding to the protruded part, and the position of the flame hole of the child burner 7 is recessed. 3 flame holes 6B1, 6B1,
6B1 and main burner 1 flame holes 6A1, 6A1, 6A
1 was made shorter than the distance L6 between the flame holes 6B2, 6B2, .

As shown in FIGS. 13 to 15, an igniter P is provided near the outer master burner 1 to first ignite the master burner 1, and then from the master burner 1 to the inner slave burner 7. It may be moved.

In addition, among the above embodiments, Fig. 2 and 11
13 and 15, the three flame holes 6B1, 6B1, 6B1 of the child burner are replaced with flame holes 6B2, 6B at other locations as shown in FIG.
2...It may be made larger in diameter.

In this case, the flame of one of the parent and child burners 1 and 7 and the flame hole of the other burner will approach each other at least in one place,
From child burner 7 to parent burner 1 or parent burner 1
Ignition from the flame to the secondary burner 7 is reliably performed. Also, since combustion air is sufficiently supplied to the child burner 7 via the link 8 between the parent and child burners 1 and 7,
The combustion condition of the child burner 7 is also maintained in good condition.

In addition, in the case of the embodiment shown in FIG. 9, FIG. 11, FIG. 14, and FIG. 15, the flame holes 6A1, 6A1, 6A1
If you match trivet 9 in the part where is provided,
The tip 9a of the trivet 9 is less likely to come into contact with the flame, and the flame is not cooled by the tip 9a of the trivet 9, which further improves combustibility.
Since the tips 9a of the pots can be brought close to each other, even a small pot can be placed on the trivet 9.

Furthermore, in the case of the embodiments shown in FIGS. 11 and 15, if the protrusion amount and recess amount of both the parent and child burners 1 and 7 are to be the same as in the other embodiments, one of the two burners 1 and 7 Advantageously, the flame of one burner and the flame hole of the other burner can be brought closer to each other than in the case of other embodiments, and the reliably ignition is further improved; When the same as in the embodiment is used, the amount of protrusion and recess of both burners 1 and 7 can be made smaller than in the case of other embodiments, which is particularly advantageous in manufacturing.

(Effects of the Invention) According to the present invention, the flame of one of the parent and child burners and the flame hole of the other burner are brought close to each other at least at one location, so that Compared to the conventional method where all the flames are formed at equal intervals with the flame holes of the other burner, the flame transfer from one burner to the other burner is ensured without compromising the uniformity of heat distribution throughout the burner. Furthermore, since air is sufficiently supplied from the secondary air intake space between both burners, combustion is effectively maintained.

[Brief explanation of the drawing]

FIG. 1 is a cut-away side view showing the first embodiment of the present invention, FIG. 2 is a schematic diagram seen from the plane, and FIG. 3 is a perspective view of the burner cap of the sub-burner inside thereof.
Fig. 4 is a cross-sectional view showing the arrangement of the flame holes of the burner cap shown in Fig. 3, Fig. 5 is a cutaway side view showing the main parts of Fig. 1, and Fig. 6 is similar to the conventional device shown in Fig. 1. FIG. 7 is a schematic diagram of the second embodiment of the present invention as seen from a plane; FIG. 8 is a cross-sectional view showing the arrangement of flame holes in the burner cap of the sub-burner of FIG. 7. 9 is a schematic plan view of the third embodiment of the present invention, FIG. 10 is a cross-sectional view showing the arrangement of flame holes in the burner cap of the sub-burner of FIG. 9, and FIG.
The figure is a schematic diagram of the fourth embodiment of the present invention seen from a plane;
Fig. 12 is a cross-sectional view showing the arrangement of flame holes in the burner cap of the sub-burner in Fig. 11; Fig. 15 is a schematic diagram of the seventh embodiment of the present invention as seen from the plane, and Fig. 16 shows a modification of the arrangement of the flame holes of the burner cap of the child burner. FIG. 17 is a cutaway side view of the conventional example. 1... Parent burner, 6A1, 6A2, 6B1, 6
B2...flame hole, 7...child burner, 8...(for secondary air intake).

Claims (1)

[Scope of Claims] 1. An inner slave burner is arranged concentrically within an annular master burner having flame holes only on the outer peripheral surface, and a secondary air intake space is provided between both burners. In a burner device in which flame transfer ignition occurs from one burner to the other burner, the flame formed in a plurality of flame holes equally spaced in the circumferential direction of at least one of both burners is transferred to the other burner. A burner device characterized by being placed close to the flame hole. 2. The burner device according to claim 1, wherein a plurality of flame holes at equal intervals in the circumferential direction of at least one of the two burners are arranged close to the flame holes of the parent burner. 3. The burner device according to claim 1, wherein at least of the two burners, at least the main burner has a plurality of flame holes at equal intervals in the circumferential direction close to the flame holes of the child burner. 4. The burner device according to claim 1, wherein a plurality of flame holes at equal intervals in the circumferential direction of at least one of the two burners are formed to have a larger diameter than flame holes in other parts.