JPS6150604B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to eliminate uneven grilling on the bottom surface of a grill such as double-sided grilling.

The lower burner of a double-sided grill is required to uniformly burn the bottom surface of the object to be heated, to avoid clogging due to dripping liquid, to prevent poor combustion, and to generate as little smoke as possible. There are particularly strong demands for the latter two, and the key point is how well they can satisfy these demands, eliminate uneven baking, and produce delicious baked goods. For this purpose, a conventional method has been adopted in which the burner is housed within the side wall of the grill chamber and only the flame is blown out, as shown in FIG. In this way, the latter two of the three problems mentioned above are satisfied because there is no dripping of liquid into the flame hole and there is no high-temperature area where the dripped liquid drips and generates smoke. However, since heating flames are formed on the inside wall of the refrigerator, it becomes difficult to distribute heat on the lower surface of the object to be heated. One measure that has been considered in the past is shown in Figure 1. The flame b for heating the lower surface of the object to be heated, formed in the burner a, is guided and collected by the hot air diffuser c toward the center of the refrigerator, and its spread spreads over the entire grill section (object to be heated), making the heat distribution uniform. We are trying to However, in reality, the difference in height between the burner and the object to be heated is less than 40 to 50 mm, making it difficult to achieve uniformity, and it is even said that it is cleaner and tastier to bake the object upside down.

In the present invention, by changing the shape of the lower flame, the flow of hot air is dispersed between the central part and the peripheral part of the refrigerator, and the heat is made uniform, and will be explained in conjunction with experimental results. FIGS. 2 and 3 show an embodiment of the present invention. 1 is the grill body, which is built into a gas stove or the like. A grill burner 5 is installed inside the main body 1 and forms an upward flame 2 and inward flames 3 and 4 on both sides of the lower part. The upward flame 2 heats a radiator 8 surrounded by an outer wall 6 and an inner wall 7 and formed at the upper end of the outer wall. Reference numeral 9 denotes a grill grate which is secured to the inner wall 7 of the grill and on which the object to be heated 11 is placed in the grill interior 10. 12 is a saucer for liquid containing water.

Here, the aim of the present invention is to form the inward flames 3 and 4, and in the example shown in FIG. 3, the areas of the flame holes 13 and 14 are changed every other flame hole. That is, large flame hole 13
In this case, a long flame 3 is formed to reach the center of the refrigerator, and a short small flame 4 is formed in the small flame hole 14 to disperse the heat to the periphery of the refrigerator. At this time, the effect of elongating the flame 3 is to allow heat to reach the center of the refrigerator and to rapidly promote the diffusion of the hot air flow downstream from the leading edge of the flame. Experiments have shown that even when the flame holes have pitches where the flame does not transfer smoothly between the flame holes, a heat distribution is obtained in the center of the chamber that does not cause uneven heating. This is because it is not possible to provide a large amount of heat as only the surface burns from below, so it is necessary to place long flames with sufficient distance (10 to 20 mm is good, depending on the internal dimensions of the refrigerator). It is possible to achieve a substantially uniform heat distribution near the center of the refrigerator with the same amount of heat as before. However, forming a long flame conversely results in a lack of heat flow in the periphery, and the large pitch between the flame holes 13 makes it difficult for the flame to spread. The small hole flame 14 compensates for this, and its effect is clear from the above description. The flame hole area ratio, pitch, etc. should be determined experimentally based on the internal conditions of the oven.

The function as a grill is the same as the conventional function,
The aims of the present invention have been described above.

FIG. 4 shows another embodiment, in which a plurality of flame expansion plates 15 attached to the burner 5 are disposed so as to come into contact with the flame at every interval, and the flame is expanded 4' in the horizontal direction. The aim is to equalize the heat distribution between the center and periphery of the refrigerator without changing the area of the refrigerator. However, the flame hole pitch needs to be determined experimentally.

As described above, the present invention attempts to equalize the heating distribution from the bottom surface by appropriately changing the shape of the flame, and achieves the effect with simple means by utilizing the difference in the diffusion of hot air flow depending on the flame length and ejection speed. It is something.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional grill, Fig. 2 is a sectional view of a grill according to an embodiment of the present invention, Fig. 3 is a partial sectional view of the burner section of Fig. 2, and Fig. 4 is a sectional view of the burner section and other parts. A partial sectional view of the example, FIG. 5 is a sectional view taken along line A-A' in FIG. 5... Burner, 10... Grill inside, 11...
Heated object, 13, 14... Flame hole, 3, 4, 4'...
…flame.

Claims (1)

[Claims] 1 A heating means is provided to heat and cook the object to be heated inside the refrigerator from the upper and lower surfaces, and a burner is used as the means for heating from the bottom surface, and the hot air flow from the flame formed in the burner flame hole is directed to the center and peripheral parts of the refrigerator. A grill in which the length and shape of the flames are varied at least every other flame so as to supply the flames.