JPH0419305Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a combustion plate applied to a combustor such as a sinter or a heater.

(Prior Art) As a conventional combustion plate, one is known in which a large number of flame ports are uniformly provided over the entire surface of a plate material mainly made of ceramic to obtain stable combustion.

(Problem to be solved by the invention) However, according to the above-mentioned conventional method, for example, when using a device that requires a relatively small amount of heat and has a large combustion surface,
If a normal number of flame ports are provided at normal pitch intervals, the amount of heat will be excessive, and there will be a problem in that the object to be heated and the surrounding atmosphere cannot be kept in a good condition. Therefore,
It is possible to reduce the amount of gas supplied, but in this case, the load on each burner port will decrease, and the temperature of the combustion plate will not rise sufficiently, causing the inconvenience of unstable combustion. be.

(Means for Solving the Problems) The present invention is proposed to eliminate the above-mentioned disadvantages, and the combustion plate according to claim 1 is provided by forming a large number of grooves in a plate material mainly made of ceramic. In the case where a convex part to be surrounded is provided and a flame port is provided in the convex part and the concave groove, the concave groove is provided with a flame port that surrounds the convex part, and the total number of flame ports in the concave groove is calculated as the total number of flame ports in the convex part. The combustion plate according to claim 2 is characterized in that the number of combustion plates is smaller than the number of holes.
In a device in which a large number of flame ports are provided that penetrate through the plate, convex portions and concave portions surrounding the convex portions are alternately provided on the surface of the plate material, and the number of flame ports of the concave portion is adjusted to the side of the convex portion. It is characterized in that the number of flame ports of the convex portion is smaller than the number of flame ports of the convex portion with respect to the sides of the convex portion.

(Function) The present invention has the above-mentioned configuration. According to this, even when using an infrared radiation combustion plate that requires a relatively small amount of heat and has a large combustion surface, it is possible to use the concave grooves. Or, since the total number of flame ports in the concave portion is smaller than that in the entire convex portion, the amount of heat is reduced compared to the conventional method in which the flame ports are uniformly provided over the entire surface by the normal number at regular pitch intervals. It is possible to maintain objects and the surrounding atmosphere in a good condition, and stable combustion can be obtained because the load on the flame port does not decrease. Incidentally, the ambient temperature of a flame port provided in a groove or a recess tends to be low due to heat being taken away by the adjacent convex portion.Therefore, contrary to the present invention, if the number of flame ports in the convex portion is reduced, the present invention can be improved. The combustion condition becomes more unstable and the amount of carbon monoxide generated increases. On the other hand, since the convex part is relatively easily heated, the combustion state at the flame port of the convex part is easier to stabilize. It is desirable to reduce the number of flares in the ditch.

(Example) Next, the present invention will be explained based on the drawings.

In Figs. 1 to 3, 1 is an infrared radiation combustion plate made of a plate 2 mainly made of ceramic and provided with a large number of flame ports 3 penetrating the plate. A large number of grooves 4a and 4b having a U-shaped cross section and forming angles of about 30 degrees and about 210 degrees are provided, and a diamond-shaped convex portion 5 is formed between these grooves, and a concave portion 6 is formed around these convex portions 5. The usual number of flame ports 3, that is, 4 each, are uniformly applied to each of the protrusions 5 at regular pitch intervals, and one flame is placed on each side of each of the diamond-shaped recesses 6 surrounding the protrusions 5. Mouth 3 was applied.

The infrared radiation combustion plate 1 having the above configuration is attached to the gas burner main body 7 as shown in FIG. 4, and as shown in FIG. 5, only a relatively small amount of heat is required.
Moreover, when the combustion plate is used as a top burner in a rear-exhaust type combustor 8 that requires a large combustion surface, two flame ports 3 are provided on each side of each recess 6. Since the number of flame ports 3 in the recessed part 6 is reduced by one on each side of the recessed part 6 compared to those corresponding to conventional infrared radiation combustion plates, the amount of heat is not excessive and the burner burns stably. A relatively small amount of heat is radiated over the entire object to be cooked from the relatively spread combustion surface, and the object to be cooked can be baked evenly to a desired state.

9 in the figure indicates an exhaust port.

FIG. 6 shows a second embodiment of the infrared radiant combustion plate 1 of the present invention, in which there are no burning holes on a part of the combustion surface in order to further reduce the amount of gas supplied or to widen the heating range. There is no particular difference from the above-described embodiment except for the formation of the flame opening area 10.

Incidentally, if the recessed grooves 4a, 4b are also provided in the flameless mouth area 10, and a non-penetrating hole 11 with a small diameter that is almost the same as the burner mouth 3 is provided, the flameless mouth area 10 can be provided with the flame nozzle 3. The condition of the plate material 2 can be approximated to that of the plate material 2.
The occurrence of cracks due to thermal strain can be more reliably prevented.

FIG. 7 shows that the infrared radiant combustion plate 1 of the first embodiment is attached to a heater main body 13 equipped with a large radiant heat release window 12 with the combustion surface facing the window 12, and the infrared radiant combustion plate 1 of the first embodiment is This shows an example in which it is used as a combustion plate for an infrared burner of a large space heater that uniformly radiates infrared rays, and in this case, the top burner of the rear exhaust type combustor 8 shown in FIG. Similar to when used as a combustion plate for
A relatively small amount of heat is radiated from a relatively large combustion surface, providing a luxurious and gentle heating effect.

Incidentally, the arrangement of the flame ports 3 is not limited to that shown in FIG. 2, and may of course be arranged as shown in FIGS. 8, 9, 10, and 11.

If the arrangement is as shown in Figure 2 or Figure 8, the flame ports 3 will be arranged symmetrically with respect to the longer diagonal of the rhombus, and no matter which direction you look from on the extension of the shorter diagonal, Since the flame outlet 3 is under the same conditions, the infrared radiation combustion plate 1 is particularly directional.
When using in combination by changing the direction, for example, the sixth
This is effective when using a two-part infrared radiation combustion plate 1 having a flameless port area 10 as shown in the figure.

If the arrangement is as shown in Fig. 9 or 10, the flame ports 3 are arranged symmetrically with respect to the short diagonal of the rhombus, and when viewed from the extension of the long diagonal, the flame Port 3 is valid under the same conditions.

When arranged as shown in Fig. 11, the flame ports 3 are arranged symmetrically with respect to both the long and short diagonals of the rhombus, and when viewed from the extension of the short diagonal, they are In either case when viewed from the extended line, the flame outlet 3 is the same condition and is valid.

Further, the shapes of the convex portions 5 and the concave portions 6 are not limited to those shown in FIG. 2, and may of course be triangular in plan as shown in FIG. 12, square in plan as shown in FIGS. 13 and 14, or the like.

(Effect of the invention) As described above, according to the present invention, since the total number of burner ports in the grooves or recesses is smaller than the total number of burner ports in the convex portion, the number of burner ports can be set at the normal pitch intervals. For example, even if a comparatively small amount of heat is required and the combustion surface is large, the amount of heat may be excessive. This has the effect of preventing combustion from becoming unstable.

[Brief explanation of drawings]

Fig. 1 is a front view showing the first embodiment of the present invention, Fig. 2 is an enlarged view of a part thereof, Fig. 3 is a sectional view taken along the - line, and Fig. 4 is an infrared radiation combustion plate of the first embodiment. FIG. 5 is a cut-away front view of the burner equipped with a combustor, FIG. 6 is a front view of the second embodiment of the present invention, and FIG. The cutaway front view and FIGS. 8 to 11 are explanatory diagrams showing modified examples of the arrangement of the flame ports, and FIGS. 12 to 14 are explanatory diagrams showing modified examples of the shapes of the convex portions and concave portions. 1... Infrared radiation combustion plate, 2... Plate material,
3...flame mouth, 4a, 4b...concave groove, 5...convex part,
6... Concavity.

Claims (1)

[Claims for Utility Model Registration] 1. In a plate material mainly made of ceramic with a convex part surrounded by a large number of concave grooves formed therein, and a flame outlet provided in the convex part and the concave grooves, A combustion plate characterized in that a concave groove is provided with flame ports surrounding the convex portion, and the total number of flame ports in the concave groove is smaller than the total number of flame ports in the convex portion. 2. In a plate material mainly made of ceramic, in which a large number of flame ports are provided through the plate material, convex portions and concave portions surrounding the convex portions are alternately provided on the surface of the plate material, and the sides of the convex portions are provided alternately. A combustion plate characterized in that the number of flame ports of the concave portion relative to the side of the convex portion is smaller than the number of flame ports of the convex portion relative to the side of the convex portion.