JPS5823067Y2 - gas burner - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gas burner suitable for gases with a slow combustion rate such as propane gas, and in particular, it realizes a burner structure that can improve the combustion characteristics of this type of gas that are prone to lifting, and also The purpose of this is to improve the transfer of heat.

Hereinafter, the structure and effects of the present invention will be explained in detail according to the illustrated embodiments.

FIG. 1 shows a plan view of an embodiment of the present invention. In the figure, 1 is a burner main body, which is formed from two steel plates into a symmetrical shape by press forming, and is integrated by appropriate means. The secondary air hole section 2, the mixing tube section 3, and the plurality of flame holes 4 are integrally constructed.

The cross section of the burner body including the flame holes 4 is as shown in FIG. A pair of outer flame holes 7, 7 are arranged in parallel on the outside, and the upper end of the steel plate constituting the outer wall of the burner body 1 is connected to the outer wall 8 of the outer flame hole.
It is 8.

The middle part of the outer wall is cut and pressed over an appropriate range to form a tongue piece 9.
, 9, and each tongue piece is bent inward so that its tip has an appropriately small distance 10.10 from the spacers 5, 5.

The above-mentioned flame holes 4, 4 are connected at appropriate pitches in the upper part of the burner body 1 to form the burner shown in FIG. and ejects from the flame holes 4,4.

Here, the upward flow of the central part of the air-fuel mixture rising through the outer flame holes 7, 7 collides with the tongue pieces 9, 9, and most of it is diverted to both sides, and a part of it flows between the tongue pieces 9, 9 and the spacer 5. .5 small interval 10
．． It erupts upwards from 10.

Therefore, the direction and amount of air and gas mixture ejected from each flame hole are as shown by the arrows in Figure 3, and the shape of the flame is as shown by the two-dot chain line in Figures 1 and 2. becomes.

In this case, the part with the slowest ejection speed is at a small interval of 10°10
The other parts of the flame hole have a high ejection velocity.

Therefore, when designing to obtain sufficient primary air suction for a gas with a slow combustion rate such as propane gas,
Considering only the balance between the jetting speed and the combustion speed, the flames at both ends of the inner flame hole 6 and the outer flame holes 7, 7 tend to lift, but on the other hand, the jetting speed at the small interval 10.10 is low as described above. Since the flame is suppressed, the flame in this part burns stably without causing lifting, and eventually lifting of the flame in each part is prevented by the flames formed at small intervals 10.10.

Separately, the flames formed on both sides of the respective tongues 9, 9 of each flame hole 7, 7 are opposite to each other, but the adjacent outer flame hole 7
, 7 are opposed to each other, and the combustion mechanism is a collision flame type combustion.

Therefore, in this sense as well, the lifting prevention performance is improved, and in addition, the flame transfer between the flame holes is also improved.

Furthermore, each flame hole 4, 4 is
Since the flames formed in each flame hole are widely dispersed, a sufficient amount of secondary air is supplied, and the combustion rate of the gas is slow and high in calories. Good combustion can be ensured.

As described in detail above, the gas burner of the present invention is a gas burner in which a plurality of flame holes 4, 4 are arranged in succession at an appropriate pitch on the upper end side of the burner body 1, and each flame hole is located at the center line of the array. It is composed of an inner flame hole 6 extending in the longitudinal direction and a pair of outer flame holes 7 adjacent to each other on both sides thereof, and a tongue piece 9 is formed by bending an appropriate range of the upper center of the outer wall of these outer flame holes inward. ，
9, and a small distance 10.10 is provided between the tips of these tongues and the inner walls of the outer flame holes 7, 7, but it is suitable for combustion of gases with a slow combustion rate such as propane gas. ,
In particular, the gas burner is excellent in anti-lifting performance and has improved secondary air suction performance.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a sectional view of the main part thereof, and Fig. 3 is a perspective view of the main part.
・Burner body, 4... Flame hole, 6... Inner flame hole, 7... Outer flame hole, 9... Tongue piece, 1
0...Small interval.

Claims (1)

[Scope of utility model registration request] In a gas burner in which a plurality of flame holes 4, 4 are arranged in succession at an appropriate pitch on the upper end side of the burner body 1, each flame hole is connected to an inner flame hole 6 located at the center line of the arrangement and a pair of outer flame holes adjacent to the inner flame hole 6 on both sides thereof. The upper central part of the outer wall of these outer flame holes is bent inward to form tongues 9, 9, and the tips of these tongues and the inner wall of outer flame hole 7. Small interval between 10.
1. A gas burner characterized in that the gas burner has: