Combustion plate

Abstract

To increase radiation heat of a combustion plate having a number of burner ports penetrating through front and rear faces on a ceramic plate main body thereof.SOLUTION: A number of recessed grooves 32 are formed in lattice on a surface of a plate main body 31. Surfaces of a number of square protruding portions 33 surrounded with the recessed grooves 32 are formed into pyramid-shaped protruding faces. A burner port 341 is formed in a manner of being matched to a part of each recessed groove 32 surrounding each protruding portion 33 and a burner port 342 is formed in a manner of being matched to each of a plurality of ridge lines 33a of the pyramid-shaped protruding face of each protruding portion 33. Further a part where the recessed grooves 32, 32 of each recessed groove 32 cross, is a non-burner port portion 35 on which there is no burner port.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a combustion plate having a ceramic plate body with numerous flame holes formed therethrough from the front to the back, so that the surface of the plate body becomes red-hot due to the combustion of the air-fuel mixture ejected from the flame holes. [Background technology]

[0002] Conventionally, a known combustion plate of this type has a number of grooves formed in a lattice pattern on the surface of the plate body, and flame holes are formed to match the centers of the flat surfaces of a number of diamond-shaped or other angular protrusions surrounded by these grooves, as well as flame holes formed to match the portions of each groove surrounding each protrusion (see, for example, Patent Document 1).

[0003] In this case, the surface of the convex part is heated to a red glow 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 radiates heat. However, the surface of the convex part is flat and has a small area, so the radiant heat cannot be made very high. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 60-202221 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above, an object of the present invention is to provide a combustion plate capable of increasing radiant heat. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a combustion plate having a ceramic plate body with numerous flame holes formed therein that penetrate 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. In the plate body, numerous grooves are formed in a lattice pattern on the surface, and the surfaces of the numerous angular protrusions surrounded by these grooves are formed into pyramidal convex surfaces, and the surfaces of the numerous angular protrusions are formed so as to match the portions of the grooves surrounding each protrusion. , two of the grooves are spaced apart in the longitudinal direction. The burner holes are formed so as to match each of the ridges of the pyramidal convex surface of each protrusion. 1 of each The flame holes are formed, and the portions where the grooves intersect with each other are flameless hole portions where no flame holes exist.

[0007] 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, and each slope of the pyramidal convex surface of the convex portion is 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.

[0008] 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 the slope of the pyramidal convex surface of the convex portion cannot be effectively heated, and does not effectively contribute to the red-heating of the convex portion. In the present invention, since no corner burner holes are formed, the amount of mixture ejected from the burner holes that match the portions of the concave grooves that efficiently contribute to the glowing of the convex portion by heating the slopes of the pyramidal convex surface of the convex portion and the burner holes that match the ridges of the pyramidal convex surface of the convex portion increases. As a result, the slopes of the pyramidal convex surface of the convex portion are efficiently heated, i.e., the entire surface of the convex portion with a larger area is efficiently heated and glows red, and the radiant heat can be sufficiently increased. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of an upper-fire burner equipped with a combustion plate according to an embodiment of the present invention. [Diagram 2] Cross-sectional view taken along line II-II in Figure 1. [Diagram 3] FIG. 4 is an enlarged view of a surface of a combustion plate according to an embodiment. [Figure 4] FIG. 4 is an enlarged perspective view of a surface of a combustion plate according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] With reference to Figures 1 and 2, reference numeral 1 denotes an upper-fire burner for a grill. This upper-fire burner 1 includes a burner body 2. A mixing tube section 21 extending laterally is provided at the rear of the burner body 2. Also, a U-shaped opening 22 having a front section extending laterally and sections extending rearward from both lateral sides of the front section 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.

[0011] The combustion plate 3 has a number of flame holes formed through the ceramic plate body 31. The mixture (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.

[0012] Recently, grill cooking has become common using a grill plate with a top lid. 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 to brown the food. For this reason, it is desirable to make the radiant heat from the combustion plate 3 sufficiently high. The combustion plate 3 of this embodiment is configured to meet this demand.

[0013] The combustion plate 3 of this embodiment will be described in detail below with reference to Figures 3 and 4. A large number of grooves 32 are formed in a lattice pattern on the surface of the plate body 31, and these grooves 32 surround each of the rectangular diamond-shaped protrusions 33. The surface (lower surface) of each protrusion 33 is formed into a quadrangular pyramid-shaped convex surface. , two of the grooves 32 are spaced apart in the longitudinal direction. The first flame holes 341, 341 are formed, and the four ridges 33a of the quadrangular pyramid convex surface of each protrusion 33 are aligned so as to match each of the four ridges 33a. 1 of each The recessed grooves 32 are formed with second flame holes 342. The portions where the recessed grooves 32, 32 intersect with each other are flameless hole portions 35 where no flame holes exist. Note that the recessed grooves 32, the protrusions 33, and the flame holes 341, 342 are omitted in Figures 1 and 2.

[0014] This increases the surface area of ​​convex portion 33 compared to when the surface of convex portion 33 is made flat. Then, the inclined surface 33b of the quadrangular pyramidal convex surface of convex portion 33 is heated to red heat by the flames formed on first flame holes 341 that match the portions of each groove 32 surrounding convex portion 33 and the flames formed on second flame holes 342 that match the ridges 33a of the quadrangular pyramidal convex surface of convex portion 33.

[0015] Here, when the flame formed on the first flame hole 341 and the flame formed on the second flame hole 342 combine, 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, if a corner flame hole is formed to match the portion where the concave grooves 32, 32 of each groove 32 intersect, when the flame formed on each corner flame hole and the flame formed on the second flame hole 342 combine, 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 contribute well to the red-heating of the convex portion 33. In this embodiment, since no corner flame holes are formed, an increased amount of mixture is ejected from the first flame hole 341 and the second flame hole 342, which heat the inclined surface 33b of the quadrangular pyramidal convex surface of the convex portion 33 and efficiently contribute to the glowing of the convex portion 33. 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 glows, and the radiant heat can be sufficiently increased.

[0016] 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. 。 [Explanation of symbols]

[0017] 3...combustion plate, 31...plate body, 32...groove, 33...convex portion, 33a...ridge line, 341...first flame hole (flame hole that matches the part of the groove that surrounds the convex portion), 342...second flame hole (flame hole that matches the ridge line of the pyramidal convex surface of the convex portion), 35...flameless hole portion.

Claims

[Claim 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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