JP7612511B2 - Combustion plate - Google Patents

Description

The present invention relates to a combustion plate in which a ceramic plate body has numerous flame holes formed through it from the front to the back, and the surface of the plate body is heated red by the combustion of the air-fuel mixture ejected from the flame holes.

Conventionally, this type of combustion plate has been known to have numerous grooves formed in a lattice pattern on the surface of the plate body, with flame holes formed to match the centers of the flat surfaces of numerous diamond-shaped or other angular protrusions surrounded by these grooves, and flame holes formed to match the portions of each groove surrounding each protrusion (see, for example, Patent Document 1).

In this case, the surface of the convex part is heated to a red heat by the flame formed on the flame hole that matches the center of the convex part and the flame formed on the flame hole that matches the concave groove, and radiant heat is emitted. However, the surface of the convex part is flat and has a small area, so the radiant heat cannot be made very high.

Japanese Unexamined Patent Publication No. 60-202221

In view of the above, the present invention aims to provide a combustion plate that can increase radiant heat.

In order to solve the above problems, the present invention provides a combustion plate in which a ceramic plate body is formed with a large number of flame holes penetrating from the front and back, and the surface of the plate body is heated red by the combustion of the air-fuel mixture ejected from the flame holes, wherein a large number of grooves are formed in a lattice pattern on the surface of the plate body, and the surfaces of the large number of angular protrusions surrounded by these grooves are formed into a pyramidal convex surface , and two flame holes are formed at intervals in the longitudinal direction of the grooves so as to match the portions of the grooves surrounding each protrusion, and one flame hole is formed so as to match each of the multiple ridges of the pyramidal convex surface of each protrusion, and the portions where the grooves intersect are flameless hole portions where no flame holes exist.

According to the present invention, the surface area of the convex portion is increased by forming the surface of the convex portion into a pyramidal convex surface. Then, the slopes of the pyramidal convex surface of the convex portion are heated to red heat by the flames formed on the flame holes that match the portions of the grooves surrounding the convex portion and the flames formed on the flame holes that match the ridges of the pyramidal convex surface of the convex portion.

Here, when a flame formed on a flame hole that matches the portion of each groove surrounding the convex portion and a flame formed on a flame hole that matches the ridge of the pyramidal convex surface of the convex portion combine, the combined flame is located on the slope of the pyramidal convex surface of the convex portion, heats the slope, and efficiently contributes to the red-heating of the convex portion. On the other hand, when a flame hole (hereinafter, this flame hole is referred to as a corner flame hole) is formed to match the portion where the grooves of each groove intersect, when a flame formed on a corner flame hole and a flame formed on a flame hole that matches the ridge of the pyramidal convex surface of the convex portion combine, the combined flame is located on the ridge of the pyramidal convex surface of the convex portion, and cannot effectively heat the slope of the pyramidal convex surface of the convex portion, and does not effectively contribute to the red-heating of the convex portion. In the present invention, since no corner flame holes are formed, the amount of mixture ejected from the flame holes that match the grooves and the flame holes that match the ridges of the pyramidal convexity of the convexity, which heat the slopes of the pyramidal convexity of the convexity and contribute efficiently to the glowing of the convexity, is increased. As a result, the slopes of the pyramidal convexity of the convexity are efficiently heated, i.e., the entire surface of the convexity, which has a wider area, is efficiently heated and glows red, and the radiant heat can be sufficiently increased.

FIG. 2 is a perspective view of an upper-fire burner equipped with a combustion plate according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 4 is an enlarged view of a surface of a combustion plate according to an embodiment. FIG. 4 is an enlarged perspective view of a surface of a combustion plate according to an embodiment.

Referring to Figures 1 and 2, 1 is an upper fire burner for a grill. This upper fire burner 1 is equipped with a burner body 2. A mixing tube section 21 extending laterally is provided at the rear of the burner body 2. In addition, a U-shaped opening 22 having a front section extending laterally and sections extending rearward from both sides of the front section in the lateral direction is provided at the underside of the burner body 2. A combustion plate 3 according to an embodiment of the present invention is attached to this opening 22 via a packing 4.

The combustion plate 3 is a ceramic plate body 31 with numerous flame holes formed through it from the front to the back. The mixture (a mixture of fuel gas and primary air) from the mixing tube section 21 is ejected from the flame holes of the combustion plate 3 via the distribution chamber 23 in the burner body 2 and combusted.

Recently, grill cooking has become more common using grill plates with top lids. In this case, the radiant heat from the combustion plate 3 of the upper burner 1 is partially blocked by the top lid, making it difficult for food to brown. For this reason, it is desirable to have a sufficiently high level of radiant heat from the combustion plate 3. The combustion plate 3 of this embodiment is designed to meet this need.

The combustion plate 3 of this embodiment will be described in detail below with reference to Figures 3 and 4. A number of grooves 32 are formed in a lattice pattern on the surface of the plate body 31, and each of the grooves 32 surrounds a rectangular diamond-shaped protrusion 33. The surface (lower surface) of each protrusion 33 is formed as a quadrangular pyramid-shaped convex surface. Two first flame holes 34 ₁ , 34 ₁ are formed at intervals in the longitudinal direction of the groove 32 so as to match the portion of each groove 32 surrounding each protrusion 33, and one second flame hole 34 ₂ is formed so as to match each of the four ridges 33 a of the quadrangular pyramid-shaped convex surface of each protrusion 33. The intersecting portions of the grooves 32, 32 of each groove 32 are flameless hole portions 35 where no flame holes exist. Note that the grooves 32, the protrusions 33, and the flame holes 34 ₁ , 34 ₂ are omitted in Figures 1 and 2.

This increases the surface area of the convex portion 33 compared to when the surface of the convex portion 33 is made flat. Then, the inclined surface 33b of the quadrangular pyramidal convex surface of the convex portion 33 is heated to red heat by the flames formed on the first flame holes ₃₄₁ that match the portions of the grooves ₃₂ surrounding the convex portion 33 and the flames formed on the second flame holes 342 that match the ridges 33a of the quadrangular pyramidal convex surface of the convex portion 33.

Here, when the flame formed on the first flame hole _34-1 and the flame formed on the second flame hole _34-2 are combined, the combined flame is located on the inclined surface 33b of the quadrangular pyramidal convex surface of the convex portion 33, and heats the inclined surface 33b, thereby efficiently contributing to the red-heating of the convex portion 33. On the other hand, when a corner flame hole is formed to match the portion where the concave grooves 32, 32 of each groove 32 intersect with each other, when the flame formed on each corner flame hole and the flame formed on the second flame hole _34-2 are combined, the combined flame is located on the ridge line 33a of the quadrangular pyramidal convex surface of the convex portion 33, and cannot effectively heat the inclined surface 33b of the quadrangular pyramidal convex surface of the convex portion 33, and does not effectively contribute to the red-heating of the convex portion 33. In this embodiment, since no corner flame holes are formed, the amount of mixture ejected from the first flame hole _34-1 and the second flame hole _34-2, which heat the inclined surface 33b of the quadrangular pyramidal convex surface of the convex portion 33 and efficiently contribute to the red-hotness of the convex portion 33, is increased. As a result, the inclined surface 33b of the quadrangular pyramidal convex surface of the convex portion 33 is efficiently heated, that is, the entire surface of the convex portion 33, which has a larger area, is efficiently heated and red-hot, and the radiant heat can be sufficiently increased.

Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited thereto. For example, the shape of the protrusion 33 may be a rectangle other than the diamond shape of the above embodiment, a triangle, or a polygon having pentagons or more sides .

3...combustion plate, 31...plate body, 32...groove, 33...convex portion, 33a...ridge line, 34 ₁ ...first flame hole (flame hole that matches the part of the groove surrounding the convex portion), 34 ₂ ...second flame hole (flame hole that matches the ridge line of the pyramidal convex surface of the convex portion), 35...flameless hole portion.

Claims (1)

A combustion plate having a ceramic plate body with a number of flame holes formed therethrough from the front to the back, and the surface of the plate body is heated red by the combustion of the air-fuel mixture ejected from the flame holes.
A combustion plate comprising: a plate body having a surface on which a large number of grooves are formed in a lattice pattern; the surfaces of a large number of angular protrusions surrounded by these grooves are formed into a pyramidal convex surface ; two flame holes are formed in each of the grooves at intervals in the longitudinal direction so as to match the portions of the grooves surrounding each protrusion; one flame hole is formed in each of the grooves so as to match each of a plurality of ridges of the pyramidal convex surface of each protrusion; and portions where the grooves intersect are flameless hole portions where no flame holes exist.

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