JPH0619936Y2 - Stove burner - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stove burner used for a gas table or the like.

[Conventional technology]

In the stove burner used for a gas table, etc., in order to realize compactness without impairing the universality with respect to the gas type, although the flame opening load can be made slightly higher depending on the gas type, for example, combustion of LPG, 13A, etc. There is a limit to the compactness of the slow gas species.

Therefore, in the prior art shown in FIGS. 3 and 4, the pitch between the flame openings 4'is reduced to increase the number of the flame openings 4 ', and at the same time, the width L'of the flame openings 4'is increased. This is dealt with by increasing the height H'to increase the area of each flame opening, but not only the burner becomes larger, but also the flame pitch between the flame openings 4'becomes smaller because the flame pitch is smaller. There was a problem of interference.

Therefore, as shown in FIGS. 5 and 6, the number of flame openings 4 ″ is reduced, and at the same time, the height H ″ and the width L ″ of the flame openings 4 ″ are increased to increase the area of each flame opening. As they grow
The burner compactness and flame interference are prevented by widening the flame port pitch of each individual. For example, LPG, 13
The burner can be made compact by using the above configuration for the A gas system, such as A, which has a slow burning speed.
In C gas systems with high burning speeds such as 6B and 6C,
In particular, there is a problem that backfire, fire extinguishing noise, and the like occur, which lacks universality depending on the type of gas.

Therefore, as a stove burner having universality with respect to gas species, conventional stove burners are disclosed in, for example, Japanese Utility Model Publication No. 52-42993 (hereinafter referred to as Conventional Example 1) and Japanese Utility Model Publication No. 47-32183 (hereinafter referred to as Conventional Example 2). There are things that have been done.

In the conventional example 1, one circular mixed gas ejection hole 2 having a cross-sectional area smaller than the cross-sectional area of the space 5 is formed inside a cylindrical space 5 whose entire area on the mixed gas ejection direction side is open, and mixed. The mixed gas ejected from the gas ejection holes 2 collides with the side wall 6 of the space 5 to reduce the jet speed of the mixed gas, and an overflow phenomenon occurs between the mixed gas ejection holes 2 and the space 5, whereby The load in the mixed gas ejection hole 2 is increased and the load in the space 5 is decreased to prevent lifting and flashback in the flame hole portion, and for gases having different flammability,
It is designed to burn completely.

In addition, in the conventional example 2, the flame port 15 has a large area 15a,
It is formed with a portion 15b having a smaller inner area than the portion 15a, and is a flame port for a gas species having a slow burning rate such as LPG.
In the large area 15a of the area of 15, the gas ejection speed is relaxed and burned, and for gas species with a high burning speed such as city gas,
Combustion is performed in the area 15b having a smaller area of the flame opening 15, and the gas passages from the mixing tube 14 to the flame opening 15 are configured as gas passages 16, 17, 18 having different cross-sectional areas. The gas ejection distribution is made uniform.

However, the conventional example 1 has a large passage resistance, so that the LP
It is inferior in universality due to lack of primary air for gas species with a slow burning rate such as G13A. In addition, in Conventional Example 2, since the flame opening area is only large and the passage resistance is large, universality is high. Was inferior to

[Problems to be solved by the device]

In view of the above problems of the conventional technology, the stove burner of the present invention is compact and has a large flame load capacity by having a structure including a main flame port and a control aperture, and is a universal stove. The purpose is to provide a burner.

[Means for Solving the Problems]

In order to achieve the above object, a stove burner according to the present invention is a stove burner in which a burner cap is detachably provided on a burner body integrally formed at a tip portion of a mixing tube. Inside the large number of main flame openings with a relatively large opening area formed in
A single opening area is smaller than the main flame opening, and a large number of control openings having a total opening area of substantially the same or larger are provided.

[Action]

Since the stove burner according to the present invention has the above-mentioned configuration, the flow of the mixed gas ejected from the main flame opening is rectified and relaxed at the control opening in front of the main flame opening, so that the combustion flame is stable and Since the single opening area of the control opening is smaller than that of the main flame opening, backfire is prevented by the control opening, and the fire extinguishing noise is not generated in combination with the stabilization of the combustion flame. Further, even in a compact burner, since the main flame opening has a relatively large opening area, the load capacity of the flame opening can be increased, so that the combustion load is increased and the gas burner has universality.

〔Example〕

An embodiment of a stove burner of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 2 denotes a burner body integrally formed at the tip of the mixing tube 1, which is a loop-shaped mixing chamber 6 communicating with the mixing tube 1 and an annular smooth surface inclined inward at the peripheral edge of the upper opening. 7 and a support tube 8 having a secondary air passage in the center
Is equipped with. Reference numeral 3 denotes a burner cap, which has a large number of slit-shaped main openings 4 having a relatively large opening area and a main opening 4 having a relatively large opening area by closely contacting the outer peripheral edge of the lower surface with the annular smooth surface 7 of the burner body 2. The flame hole groove 9 and the control opening groove 10 are radially formed in rows at regular intervals on the outer side and the inner side, and can be inserted into the central support tube 8 of the burner body 2 at the center without rattling. A support cylinder 11 that also serves as an air passage is provided. Main flame mouth groove 9 forming the main flame mouth 4
And the control opening groove 10 forming the control opening 5, the single opening area of the control opening 5 is smaller than that of the main flame opening 4, and the total opening area of the control opening 5 is substantially the same as that of the main flame opening 4. The height H and width L of the main flame opening groove 9 and the height h and width l of the control opening groove 10 are set in advance so as to be not less than that. For example, in the case of the burner cap 3 having a diameter of 82 mm, the height H of the main flame inlet groove 9 is 5 mm to 6.5 mm and the width L is 1.7 mm to 2.3 mm.
On the other hand, the height h of the control opening groove 10 is 1.6 mm to 2.8 mm and the width 1 is 1.
The control opening groove 10 has a size of about 0.6 mm to 1.0 mm, can be cast or forged, and has a dimension close to the extinction distance, that is, a dimension having a back prevention function.

Therefore, the burner cap 3 is placed on the burner body 2 and the burner cap 3 is attached to the central support cylinder 8 of the burner body 2.
The central support cylinder 11 of the burner body 2 is inserted, and the main flame hole groove 9 and the control opening groove 10 of the burner cap 3 are brought into close contact with each other on the annular smooth surface 7 of the burner body 2 so that the burner body 2 and the burner cap 3 are separated from each other. A burner head A having a large number of main flame openings 4 and control openings 5 and a secondary air passage 12 in the center.
A stove burner with a
Further, if the burner cap 3 is removed from the burner body 2, these can be separated.

In the above configuration, the mixed gas branched from the mixing pipe 1 into the loop-shaped mixing chamber 6 is rectified and relaxed by the control opening 5 provided on the inner side of the peripheral edge of the upper surface and having a narrow pitch and a small single opening area. 4, the combustion flame is stable because it is ejected from 4 and burns. Moreover, since the single opening area of the control opening 5 is smaller than that of the main flame opening 4, the control opening 5 effectively prevents backfire, In addition, the fire extinguishing sound is not generated in combination with the stabilization of the combustion flame. Further, since the blast gas is rectified by the control opening 5 inside the outer main flame opening 4 having a relatively large opening area, the load capacity of the flame opening can be increased without increasing the diameter of the burner cap 3. The burner becomes large and the burner can be made compact without impairing the universality for gas species.

[Effect of device]

As described above, according to the present invention, since the flow of the mixed gas to the main flame opening is rectified and relaxed by the control opening provided inside the main flame opening having a relatively large opening area, the combustion flame is stable, and The single opening area of the control opening is smaller than that of the main flame opening, and the total opening area is about the same as or larger than that of the main flame opening.
Even in the gas system, the control opening prevents backfire,
Moreover, no fire extinguishing sound is generated, and since the load capacity of the flame mouth can be increased, a large combustion load can be obtained. Therefore, there is an effect that the burner can be made compact without impairing the universality with respect to the gas type.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a stove burner according to the present invention, and FIG. 2 is a perspective view of a burner cap. Further, FIGS. 3 to 6 show a conventional example.
FIG. 5 and FIG. 5 are elevation views of the burner cap, and FIGS. 4 and 6 are sectional views of only the main part thereof. 1 ... Mixing tube, 2 ... Burner body, 3 ... Burner cap, 4 ... Main flame port, 5 ... Control opening.

Claims (1)

[Scope of utility model registration request] 1. A stove burner in which a burner cap (3) is detachably attached to a burner body (2) integrally formed at the tip of a mixing tube (1), and the burner body (2) and the burner cap (3) are provided. ), A single opening area is smaller than the main flame openings (4) inside a large number of main flame openings (4) having a relatively large opening area, and the total opening area is substantially the same. A stove burner characterized by having a large number of control openings (5) of a size equal to or larger than that.