JPS5848804B2 - gas burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement of a subvarna, and its purpose is to bend a flat plate, form an opening having a certain opening area on the top formed by the bending, and In a gas burner in which the opening is a flame hole and the flame hole forms a fish flame-like combustion flame, the flame is rectified by rectifying the flow of the air-gas mixture in the gas chamber. This prevents interference between the combustion flames formed in each flame hole due to the inclination and curvature of the flame formed in the hole, stabilizes the combustion of the entire gas spanner, and shortens the length of the combustion flame. The purpose of this invention is to make gas burners smaller and more compact when incorporated into equipment.

First, conventional examples are shown in FIGS. 6 to 8.

That is, the gas-air mixture flows into the gas chamber 10 through the inlet 101 attached to the gas burner body 100.
2 and is ejected from the flame hole 103.

On the other hand, a part of the mixture flows into the flame stabilizing gas chamber 104 from the flame stabilizing gas inlet 105, and the flame stabilizing plate 106 and the gas burner main body 1
00 and ejects from the flame holding hole 107 formed by the flame holding hole 103 to perform a flame holding effect on the fish flame 108 formed in the flame hole 103,
Burn.

At that time, the flow direction of the air-fuel mixture in the gas chamber 102 and the flow velocity distribution in the longitudinal direction of the gas burner vary greatly depending on the position in the longitudinal direction of the gas burner, as shown in FIG.

For this reason, the combustion flame that is formed when the air-fuel mixture ejected from the flame holes 103 is combusted is influenced by the flow velocity, and the higher the flow velocity is, the more the combustion flame is tilted in that direction. 108, resulting in a very long flame length.

In order to prevent this, a push-in part 109 is provided between each flame hole so as not to be affected by the flow velocity in the gas chamber 102, and a push-in part 109 is provided between each flame hole to rectify the difference in the flow velocity direction of the air-fuel mixture flowing into each flame hole. By allowing the flame to flow only in the direction perpendicular to the hole 103, the inclination of the flame 108 was eliminated and flame interference was prevented.

The method for forming the push-in portions 109 is to provide the push-in portions 109 after bending the flat plate, or to provide a convex portion at the time of flat plate, and to align the convex portions by bending, so that each flame hole is independent of the other. ing.

When using the former processing method, the pilot hole for the flame hole 103 is already drilled when the plate is flat, so when the mold is machined by a press to provide the push-in part 109, the surrounding plate is pulled in the direction of the push-in part. As a result, the shape of the flame hole 103 that is set to form the fish flame 108 changes, and it is very difficult to obtain the desired fish flame shape.
3 management is required and it is not economical.

1. When the latter processing method was used, it was difficult to obtain complete adhesion of the convex portions because back springs of the material were generated during bending, and it was difficult to obtain a perfect rectifying effect due to the generation of gaps.

Another conventional example is shown in FIG.

The structure and operation of the burner are exactly the same as those of the conventional example described above, and the explanation will be omitted, and only the different parts will be explained.

The structure is such that a shielding plate 110 is provided within the gas chamber 102 and a plurality of openings 111 are provided in the shielding plate.

The air-fuel mixture is contracted at one end through the opening 111 in the process of being supplied from the gas chamber 102 to the flame hole 103 .

Therefore, the flow velocity distribution occurring in the gas chamber 102 is similar to that of the opening 11.
After passing through 1, the distribution becomes uniform.

This is because the opening 111 acts as a resistance to the flow.

The size of the opening 111 at this time (area through which the air-fuel mixture passes)
must be smaller than the size of the flame hole to provide any resistance to the flow of the mixture.

Therefore, the resistance inside the gas chamber 102 increases, and when the Bunsen burner sucks the primary air through the nozzle and mixing tube to create a mixture, the resistance inside the gas chamber 102 increases.
Next, not much air is sucked in.

Therefore, it has the disadvantage that the amount of combustion per burner becomes small.

The present invention solves the above-mentioned conventional problems, and one embodiment thereof will be described below with reference to FIGS. 1 to 5.

1 to 4, a gas-air mixture flows into a gas chamber 3 through an inlet 2 attached to a gas burner body 1, and a portion of the mixture further flows into a flame-holding gas chamber 3 through the inlet.

The flame that burns from the flame hole 6 is stabilized by the flame holding hole 5 formed by the flame holding plate 4 and the gas burner body 1, thereby achieving stable combustion.

In order for the flow of the air-fuel mixture in the gas chamber 3 to exhibit the flow state shown in FIG. 9, the flow flowing into the flame hole 6 must be rectified.

In order to obtain this rectifying effect, as shown in Figure 4, the flame hole 6
A rectifier plate 9 having a constant opening area 1 at the same intervals as , and having a push-in part 8 in the middle after being bent, is attached to the top tip of the flame hole 6 on the gas chamber 3 side to create an inflow path into the flame light 6. By providing 10 independently for each flame hole, a complete and economical rectification effect can be obtained.

The difference between this embodiment and the conventional example is that there is no change in the shape of the flame hole 6 due to the pushing of the burner body itself, and the shape of the fish flame is not curved or distorted.

Another embodiment shown in FIG. 5a is a rectifying plate 13 formed in a comb shape on the side of the gas chamber 12 of the flame hole 11 in order to obtain a rectifying effect.
The comb section of the comb-shaped rectifying plate is arranged between the flame holes in the top end case to make each flame hole passage independent, thereby achieving a complete flow rectification effect.

In figure b, in consideration of the flow path resistance of the gas chamber 14, a constriction part 15 is provided at the top of the gas chamber 14, and a comb-shaped rectifying plate 16 is inserted with the tip of the top part as in figure a to reduce the resistance. It is something.

As described above, the present invention inserts a rectifying plate that partitions each flame hole in the vicinity of the flame hole in the gas chamber with a trench at the top end, partitions each flame hole near the flame hole, and creates a space between the gas chamber and each flame hole. The following effects can be obtained by providing each flame hole individually and correspondingly and substantially perpendicularly to the longitudinal direction of the burner body.

(1) No deformation of the flame hole occurs during processing.

(';4 The flow path for the purpose of rectification is completely formed,
A rectifying effect can be obtained.

(3) Due to the above amendment, the flame will not be affected by the flow in the gas chamber, and the flame will not be curved or distorted.

[Brief explanation of the drawing]

Figure 1 shows one embodiment of the present invention. t4 is a sectional view of the gas burner, FIG. 2 is a top view of the same, FIG. 3 is a sectional view taken along line AA in FIG. 2, FIG. 4 is a top view of the rectifier plate, and FIGS. Figures 6 to 8 are conventional examples, Figure 6 is a cross-sectional view, Figure 7 is a top view of the same, and Figure 8 is a cross-sectional view taken along line B-B in Figure 7. be. FIG. 9 is a diagram showing the distribution of the gas flow velocity to the flame hole with respect to the distance X from one end of the burner body. FIG. 10 shows a cross-sectional view of another conventional example. 12, 14... Gas chamber, 6 11... Flame hole, 9 13, 16... Current plate.

Claims (1)

[Scope of Claims] 1 A gas chamber is formed by bending a flat plate, and a flame hole having a certain opening area is formed at the top formed by the bending, and each flame is placed near the flame hole in the gas chamber. A flow path for the air-fuel mixture is formed between the gas chamber and each of the flame holes by inserting a rectifying plate that partitions the holes up to the tip of the top, and the flow path is independent of each of the flame holes and is connected to the flame hole. Correspondingly, the burner is provided approximately at right angles to the longitudinal direction of the burner body, and is configured to rectify the flow near the flame hole. 2. The gas burner according to claim 1, wherein the current plate has a comb shape.