JPS5840415A - Burner - Google Patents

Abstract

PURPOSE:To obtain a grill burner in which the surface and inside of a heated material are simultaneously heated by a method wherein some projections are formed around the flame holes and a heat-resistant ceramic is injected under its molten condition to the surface of the flame hole. CONSTITUTION:Some projections 8 are formed around the flame holes 5 and a heat-resistant ceramic is injected under its molten condition on the surfaces of the projections. Near-infrared ray is radiated from the hot heated part by the combustion flame 6 and a far-infrared ray is radiated from the concave portions 9 which are at a lower temperature than that of the projections 8. Then, when the carbohydrate or protein is heated, its surface is heated by the near-infrared ray generated by the hot temperature part in the projections 8 and the part deeper than the surface is heated by the far-infrared ray generated from the low temperature portions in the concave parts 9, so that the surface and inside of the material may be simultaneously heated.

Description

[Detailed Description of the Invention] The present invention aims to provide a burner with high radiation efficiency and rapid heating effect by radiating both near-infrared layer and far-infrared layer which are advantageous for heating. purpose.

In the conventional burner of this type,
As shown in Publication No. 4, a plate made of ceramic is provided with a large number of combustion holes penetrating both sides, diamond-shaped depressions are continuously formed on the surface of the plate, and the center portion of each diamond-shaped depression is formed on the surface of the plate. Burners were found in which combustion holes were arranged in an annular position surrounding this central part and also in positions on both sides of the annular part. However, Mo2,-.

When combusting gases with fast and slow burning rates in the same burner, the temperature on the mixture inlet side of the flame hole can be lowered by making the plate thicker and increasing the depth of the flame hole in order to burn them on the surface of the plate material or within the flame hole. The fuel temperature was lowered to prevent backfire and ensure combustion stability. In addition, in order for combustion to take place on the surface or within the flame hole, the amount of air in the mixture supplied to the flame hole must be greater than the theoretical amount of air, and the combustion is performed only by the impact force of the air in the mixture. In order to make the burner surface red hot, more than a certain amount of combustion is required, and when the combustion amount is reduced to a small amount, the plate surface does not become red hot. In this type of burner, the flame hole becomes red hot to obtain a temperature sufficient to maintain and continue combustion, but unless it becomes red hot, combustion cannot be maintained and continued, resulting in incomplete combustion.

As described above, conventional burners of this type have the disadvantage that the material cost is high due to the thick ceramic plate, and incomplete combustion occurs, making it impossible to reduce the amount of combustion. The present invention aims to improve this drawback, and the flame hole plate is formed into an uneven shape, the concave portions are continuous with each other, the convex portions are independent from each other, flame holes are provided in the bracket concave portions, and the flame hole plate surface is provided with flame holes. The basic structure is thermally sprayed heat-resistant ceramic, and this structure allows sufficient radiation of both near-infrared and far-infrared rays. Embodiments of the present invention are shown in FIGS. 1 to 3 and will be described in detail below.

1 is a burner, 2 is a mixing tube, 3 is a mixture chamber, 4 is a flame hole plate formed from a heat-resistant plate material into an uneven shape, 5 is a flame hole provided in the flame hole plate 4, and 6 is a flame hole formed in the flame hole 5. The combustion flame 7 is a heat-resistant ceramic sprayed on the surface of the flame hole plate 4, and the mixture flowing from the mixing tube 2 is distributed to the flame hole 6 in the mixture chamber 3. The air-fuel mixture ejected from the flame hole 6 forms a combustion flame 6 and burns. The combustion flame 6 is generated by constructing a burner flame hole plate 4 made of a heat-resistant plate material such as an iron plate or a stainless steel plate, and forming concave portions 9 and convex portions 8 on the surface.The concave portions 9 are continuous with each other, and the convex portions 8 are independent of each other. A flame hole 5 is formed in the recess 9, and aluminum 1 is provided on the surface of the flame hole plate 4.
The convex portion 8 is coated with a heat-resistant ceramic mainly composed of 20s+silica 5i02 or the like and thermally sprayed on the surface of 4. In this way, in the conventional method, an attempt is made to uniformly obtain a high-temperature area with as uniform a temperature distribution as possible, whereas the present invention creates a high-temperature area and a low-temperature area on the surface of the flame hole plate 4. It is forcibly formed.

As described above, in the present invention, near-infrared rays are emitted from the high-temperature part heated red-hot by the combustion flame 6 by forming the convex part 8 around the flame hole 5 and spraying heat-resistant ceramic on the surface.
Far-infrared rays are emitted from the concave portions 9, which are lower temperature parts than the convex portions 8. FIG. 4 shows the distribution of wavelength and radiation intensity. The radiation from the convex portion 8 is shown by M, and the radiation from the concave portion 9 is shown by B. In the burner of the present invention, both of these radiations are obtained. It has the effect of In conventional devices, either Mu or B is radiated, but there is a large difference in the radiation intensity of Mu and B, and essentially only the effect of Mu or B alone can be obtained. In addition, since the heat-resistant ceramic is only thermally sprayed, the temperature does not drop even if the amount of combustion used is reduced compared to conventional methods, and the combustion can be maintained and continued.

As described above, when a carbohydrate or protein substance is heated using the burner of the present invention, the surface is heated by the near infrared rays generated from the high temperature part of the convex part 8, and the surface is heated by the far infrared rays generated from the low temperature part of the concave part 9. Since the part that goes inside is heated, the inside of the surface of the object is heated at the same time, so 71J
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[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the burner of the present invention, and FIG.
The figure is a front sectional view of the burner, FIG. 3 is an enlarged view of the flame hole of the burner, and FIG. 4 is a diagram showing the relationship between wavelength and intensity emitted from the burner. 1...burner, 4...flame hole plate, 6...
... Flame hole, 7 ... Heat-resistant ceramic, 8 ...
...Convex part, 9...Concave part. Name of agent: Patent attorney Satoshi Nakao, male and 1 other person 1st
Mother No. 381 Figure 4 5P length

Claims (1)

[Claims] The flame hole plate is formed of a heat-resistant plate material into an uneven shape, the concave portions are continuous with each other, and the convex portions are formed independently, and flame holes are provided in the concave portions, and alumina, alumina,
A burner sprayed with heat-resistant ceramic mainly composed of silica.