JP2753481B2 - Infrared burner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an infrared burner used as a fire burner for a porcelain cooker. 2. Description of the Related Art In general, a combustion plate for an infrared burner is provided with a flame outlet uniformly over the entire surface thereof. However, this requires a relatively small amount of heat, for example, and a usual number of flame ports are usually provided on a combustion plate used as an upper fire burner of a porcelain cooker that requires a large spread of the combustion surface of the combustion plate. When the pitch is set at the above pitch, the amount of heat becomes too large, and there is a problem that good baking cooking cannot be performed. Therefore, it is conceivable to reduce the supply gas amount.However, when doing so, the flame port load of each flame port decreases, the temperature of the combustion plate does not rise sufficiently, and combustion becomes unstable. There is a problem that makes it easy to lift. Therefore, it is conceivable to reduce the number of flame ports, but if the number of flame ports is reduced by increasing the pitch of the flame ports, the temperature of the portion of the combustion plate where the flame ports are provided does not rise and combustion is unstable as described above. There is a defect. [0003] It is conceivable to solve this problem by concentrating the flame outlet at one or more locations on the combustion plate. There is no part, and it is difficult for the temperature of the periphery of the flame at the boundary between the place with and without the flame to rise. For this reason,
At the flame outlet located at the boundary, there is a risk of exhausting as incomplete exhaust combustion. An object of the present invention is to obtain an infrared burner free of such a problem. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a flame portion having a large number of flames and a flameless portion.
Provision of a non-flame port for combustion compared to the surface area of the combustion plate
In the infrared burner with a reduced amount,
Is at least partially surrounding the non-flame port portion without the flame port.
Around the non-flame port along the flame port
The number of protrusions is provided . [0005] In the infrared burner having the above configuration, the protrusion of the non-flame port portion along the flame port portion is red-heated by the exhaust gas, whereby the width of the red-heated portion is widened and the temperature is increased. The temperature of the periphery of the flame outlet at the boundary with the temperature rises. The present invention will be described with reference to an embodiment shown in the drawings. In the drawings, reference numeral 1 denotes a gas burner main body, and a combustion plate 2 having a rectangular shape and a plurality of flame ports 3 provided on the gas burner main body 1.
To form an infrared burner. The combustion plate 2
Is provided, for example, with a combustion surface facing downward on a ceiling portion of a rear exhaust type porcelain cooker (not shown). In this case, as shown by an arrow in FIG. Exhaust flows towards the end. According to the present invention, in the combustion plate 2, a flame port portion A and a non-flame port portion B having no flame port are provided, and a large number of protrusions are formed on the non-flame port portion B along the flame port portion A. 4 and the flame portion A is a non-flameless flame
It was provided so as to surround at least a part of the mouth portion B. To explain this further, in the first embodiment shown in FIGS. 1 to 3, the combustion plate 2 is constituted by two combustion plates 2a, 2a divided at the center back and forth, and 4 divided at the center as a flame port portion A provided with a port 3
The diagonal swath portions A1 to A4, the swath portion A5 parallel to the front and rear edges connecting the inner ends of the swath portions A1 and A2, and the inner ends of the swath portions A3 and A4. A band-shaped flame port portion A6 parallel to the front and rear end edges to be connected, a band-shaped flame port portion A7 connecting the outside of the band-shaped flame port portions A1 and A3,
An inverted V-shaped strip-shaped flame port portion A8 connecting the outside of the strip-shaped flame port portions A2 and A4, and the combustion plate 2 behind the flow of exhaust gas.
At the rear end portion, a band-shaped flame port portion A9 covering substantially the entire width was provided, and the other combustion plate surface was a non-flame port portion B composed of B1 to B7 . That is, a band-shaped flame that bends in a curved shape and continues
At the mouth portions A3, A4 and A6, the front portion of the combustion plate 2
Surrounds a part of the non-flame opening B1 and bends it
At the side of the combustion plate 2
Surrounds part of the flameless opening B2 and bends in a U-shape
At the side of the combustion plate 2 at the strip-shaped flame ports A4 and A8.
Surrounds a part of the flameless opening B3 and bends it
Of the combustion plate 2 at the strip-shaped flame ports A7 and A1
Surrounds part of the flame outlet B4 and bends in a U-shape
No flames on the side of the combustion plate 2 at the strip-shaped flame ports A8 and A2
Surround a part of the non-flame port B5 of the port B4 and further
A5, A6, A7, A8
Surrounds the entire circumference of the flameless opening B6 at the center of the combustion plate 2,
In the band-shaped flame mouth portions A1, A5, A2, A9 connected to each other ,
So as to surround the entire circumference of the flameless port B7 at the rear of the combustion plate 2.
I made it. The combustion plate 2 extends over a strip-shaped flame port portion A provided with the flame port 3 and a non-flame port portion B along both sides thereof.
A number of protrusions 4 were formed by making diamond cuts or other cuts on the surface of the substrate. In this way, the flame part A with the flame day 3
The protrusion 4 is provided at the non-flame port B along the same, so that the protrusion 4 becomes red-hot, whereby the width of the portion that glows red can be widened, and the flame port 3 is provided. can increase the temperature of the strip-shaped flame port portion a and flameless port portion B along with this, especially flame port portion a, projection 4 located downstream of the exhaust gas flow from the flame port portion a Since the temperature is further increased by the influence of the exhaust gas, the temperature of the peripheral edge of the flame port 3 at the boundary with the non-flame port portion B on the downstream side of the flow of the exhaust gas can be further increased. The strip-shaped flame port portions A1 to A9 are mutually
It was continued. Further, a non-through hole 5 having the same pitch as the flame port 3 is provided in a portion where the projection 4 is provided. A portion of the combustion plate 2 where the flame port 3 exists,
That is, the flame plate portion A and the non-flame port portion B include the combustion plate 2
Has a large difference in specific heat, which is one cause of cracking of the combustion plate 2 due to thermal strain. In order to prevent this as much as possible, the non-flame opening portion B except for the portion where the non-through hole 5 is provided is also cut into the above-mentioned diamond cut or the like, or the non-through hole is formed at a pitch interval several times the flame pitch. If 6 is applied, the band-shaped flame mouth part A
Thus, the difference in specific heat between the non-flame opening portion B and particularly the non-flame opening portion B can be reduced, and the above-described problem can be solved. Note that the band-shaped flame opening portions A1 to A9 are not limited to the above embodiment,
5 and the band-shaped flame opening portion A6 are formed in a V-shape in which both are directed forward as in the second embodiment shown in FIG. 4, or one of the front and rear ends is formed as in the third embodiment shown in FIG. The heat distribution can be adjusted by the band-shaped flame port portion A5 and the band-shaped flame port portion A6, assuming that the shape is linear along the edge and the other is bent in a V-shape. Further, in the apparatus provided with the flame outlet distribution portion A having the shape shown in the first embodiment, a strip-shaped flame outlet portion A along the front end as in the fourth embodiment shown in FIG.
10 to provide the band-shaped flame mouth portion A10 and the band-shaped flame mouth portion
A3, A4, and A6 are located at the front of the combustion plate 2.
When the entire periphery of the non-flame opening portion B1 is surrounded, the pattern of the flame opening distribution portion A applied to the front and rear plate plates 2a, 2a becomes the same, and the flames having different patterns before and after as in the above-described embodiment. The inconvenience of making the plate plates 2a, 2a having the mouth distribution portion A can be eliminated. The portion where the flame distribution portion A is provided tends to be weaker than the other portions. In particular, when the flame distribution portion A is long in a straight line as shown in the first to fourth embodiments, it is particularly difficult. It is easy to crack along the part. In order to prevent this, in the fifth embodiment shown in FIG. 7, a meandering portion is provided in the middle of the strip-shaped flame opening portions A1 to A4. As in the first to fifth embodiments, in the infrared burner including the combustion plate 2 in which the flame distribution portion A and the non-flame distribution portion B are arranged, all of the burners are fired. The performance (the ability to heat the food uniformly) was good, and the combustibility (CO / CO2) was also good in all the embodiments. This is added to the second embodiment,
The results of an experiment using a burner with a combustion capacity of 1050 Kcal / h show that for a gas type of 6C, the value of CO / CO2 is
0.007 / 1.2 = 0.0058, and the gas type 1
At 3A, the value of CO / CO2 is 0.008 / 1.45
= 0.0055. In addition, according to the fourth embodiment, the result of an experiment using a burner having a combustion capacity of 1050 Kcal / h is shown. For gas type 6C, the value of CO / CO2 is 0.0045 / 1.2 = 0.0038. , Gas type 13A, the value of CO / CO2 is 0.006 /
1.32 = 0.0045. According to the present invention, a relatively small amount of heat
And the spread of the combustion surface of the combustion plate
Need big infrared burner, according to request
Therefore, surround at least a part of the non-flame port part
Even in the case where the flame port portion is provided, by providing the projection in the non-flame port portion along the flame port portion, the projection can be red-heated, so that the width of the portion that glows red can be widened. , discharged as exhaust in a state in which it can raise the temperature of the flameless opening portion along said inflammatory mouth flame hole part component provided with, combustion at the flame port located at the boundary between the inorganic flame port portion is not completed Can be suppressed as much as possible.

[Brief description of the drawings] FIG. 1 is a perspective view showing an example of an embodiment of the present invention. FIG. 2 is a front view of a combustion plate. FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2; FIG. 4 is a front view of another embodiment of the combustion plate. FIG. 5 is a front view of another embodiment of the combustion plate. FIG. 6 is a front view of another embodiment of the combustion plate. FIG. 7 is a front view of still another embodiment of the combustion plate. [Explanation of symbols] 2 Burning plate 3 Flame A Flame mouth B Flameless mouth part

Claims (1)

(57) [Claims] Flame port with many flame ports and non-flame port without flame port
Parts to reduce the amount of combustion compared to the surface area of the combustion plate.
In the lost infrared burner, the flame port portion is
Surround at least a part of the non-flame port without flame
And a large number of protrusions on a non-flame port portion along the flame port portion.
Infrared burner characterized by having. 2. The flame outlet portion is formed in a belt shape.
An infrared burner according to claim 1 . 3. 3. The infrared burner according to claim 1, wherein said flame port portion is bent to surround a part of a non-flame port portion. 4. The infrared burner according to claim 1, wherein the flame outlet portion is formed in a bent band shape. 5. The combustion plate surface of the infrared burner is provided downward, and the flame port and the projection provided on the combustion plate are provided at a position on the lower surface of the combustion plate where combustion exhaust gas flows. 5. The infrared burner according to 2, 3, or 4.