JPH0419299Y2 - - Google Patents

Description

[Detailed description of the invention] <Technical field> The present invention uses a vaporization burner (e.g., a cylindrical vaporizer with a bottom and an opening for (a burner head provided in a sealing manner), and in particular to improvements in such a burner head.

<Prior art> As shown in Figs. 1 and 2, a conventional burner head has a burner plate 2 in the form of a disc, a wire mesh 3, and the tip of a burner pipe 4 fixed to the upper end opening of a burner holder 1 in the shape of a frustum. The structure is such that hemispherical burner caps 5 are stacked and fixed, and the burner pipe 4 is led out from the lower opening 1a of the burner holder 1. Reference numerals 2a denote fan-shaped flame holes bored in the burner plate 2, which are uniformly provided around the entire circumference. 5a is a ventilation hole bored in the burner cap 5. Therefore, a vaporizer (not shown)
Since the vaporized gas is mixed with air, it reaches the wire mesh 3 through the lower opening 1a and the vent hole 5a, where it is further mixed with the air blown through the burner pipe 4, and is mixed with the mesh of the wire mesh 3. It is emitted outward through the flame holes 2a, 2a, . . . of the burner plate 2.
At this time, the mesh portion or the flame hole 2a portion serves as a flame port and the mixed gas is combusted.

However, since the structure is simply that the wire mesh 3 is stacked and fixed on the bottom of the burner plate 2, there is inevitably a gap between the wire mesh 3 and the burner plate 2, and gas from vaporized fuel flows through that gap. There was also the problem that combustion occurred there, causing the wire mesh to become red hot. There was also the problem that the flame lifted because the flame hole 2a was large.

<Purpose> The present invention has been made in order to eliminate the above-mentioned drawbacks. One embodiment will be described below with reference to the drawings.

<Example> Figure 3 is a front view of the burner head of the present invention, and Figure 4 is a front view of the burner head of the present invention.
The figure is a sectional view of the main part and an explanatory diagram of the manufacturing process.
In the figure, 6 is a metal burner plate, 6a, 6a
. . . is its main flame hole, which is exactly the same as the conventional burner plate 2. Reference numeral 7 denotes a wire mesh for the flame hole which is in close contact with the lower surface of the burner plate 6, and as shown in FIG. 4, a portion corresponding to the main flame hole 6a is bulged outward and is fitted into the main flame hole 6a. . To attach the flame hole wire mesh 7 to the burner plate 6 in this way, as shown in FIG. mold or rubber mold 1
By pressing 0, the flame hole wire mesh 7 is expanded along the shape of the main flame hole 6a using the elasticity of urethane (rubber).

In this way, the burner plate 6 and the wire mesh 7 for the flame hole
are in close contact with each other, and the upper surface of the burner plate 6 and the upper surface of the wire mesh 7 for the flame hole are almost flush, and combustion occurs between the burner plate 6 and the wire mesh 7 for the flame hole, so that the wire mesh 7 for the flame hole is heated. Not only does it not get red hot, but the flame is even. Also, by using a urethane mold,
Not only is damage to the wire mesh 7 for the flame hole eliminated during processing, but also a mold for molding the wire mesh 7 for the flame hole alone is no longer required.

In addition, small auxiliary flame holes 6b, 6b are provided on the burner plate 6.
If... is provided, as shown in FIG. 8, the main flame hole 6a
The flame 11 that can be made is small auxiliary flame holes 6b, 6b...
The flame 12 that can be formed forms a pilot flame,
Lifting of the flame 11 and misfire can be prevented.

<Other Examples> As shown in FIGS. 5, 6, and 7, by placing another mixing wire mesh 13 under the flame hole wire mesh 7, the uniformity of the flame can be further improved. That is, the part of the mixing wire mesh 13 corresponding to the part of the burner plate 6 excluding the center and outer periphery is located downward at a predetermined distance l.
At the same time, the portion corresponding to the main flame hole 6a is bulged in the opposite direction to a shape similar to the bulged portion 14 of the wire mesh 7 for flame hole. Therefore, a gap 16 with a distance l is formed in the portion of the burner plate 6 between the main flame holes 6a and 6a corresponding to the partition 15, and a bulge 17 corresponding to the hole 6a is formed with the corresponding bulge. Flow paths 18, 18 are formed along the shape of the portion 17. Therefore, the mixed gas flows through two routes as shown by arrows A and B, resulting in better mixing and uniformity of the flame.

<Effects> As mentioned above, the burner head of the present invention has a metal burner plate with a plurality of main flame holes formed therein, and a wire mesh for the flame holes is provided closely on the back surface of the metal burner plate, so that the flame in the part corresponding to the main flame holes is closed. The wire mesh for the hole is bulged and fitted into the main flame hole so that the upper surface of the wire mesh for the flame hole and the upper surface of the burner plate are substantially flush with each other. Therefore, since the wire mesh for the flame hole other than the part corresponding to the main flame hole is in close contact with the burner plate, combustion does not occur in the close contact area as in the conventional case, and the red heat of the wire mesh for the flame hole is prevented. be able to. In addition, auxiliary flame holes are formed on the burner plate to prevent flame lift.

[Brief explanation of the drawing]

Figure 1: Half-sectional side view of a conventional burner head Figure 2: Plan view of the same as above Figure 3: Plan view of the burner head of the present invention Figure 4: Cross-sectional view of its essential parts Figure 5: Rear view of another embodiment Figure 6: A sectional view taken along the line BB' in Figure 5. Figure 7: A sectional view taken along the line CC' in Figure 5. Figure 8: An explanatory view of the burner head of the present invention. Code, 6...burner plate, 6a...main flame hole, 7...
...Wire mesh for flame hole.

Claims (1)

[Scope of Claim for Utility Model Registration] In a burner head that is installed at the opening of a vaporizer and forms a flame, a wire mesh for flame holes is provided closely on the back side of a metal burner plate in which a plurality of main flame holes are formed, A portion of the wire mesh for the flame hole corresponding to the main flame hole is bulged out and fitted into the main flame hole so that the upper surface of the wire mesh for the flame hole and the upper surface of the burner plate are substantially flush with each other, and A burner head characterized by a large number of auxiliary flame holes on the plate.