JP4427098B2 - Pizza kiln - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pizza kiln, and more particularly to a pizza gas kiln.
[0002]
[Prior art]
In a gas furnace for pizza, a gas burner (hereinafter referred to as an underfloor burner) is installed below the hearth, and pizza is directly baked through the hearth, and gas burners (hereinafter referred to as side burners) on both sides of the heating chamber. The top of the pizza is heated by heating the heating chamber.
In such a pizza gas kiln, in order to secure the necessary temperature in the heating chamber, the underfloor burner is accommodated in a combustion chamber defined under the floor, and the exhaust of the combustion chamber is guided to both sides of the heating chamber. The exhaust is led to the upper side of the combustion chamber together with the exhaust from the side burner.
[0003]
[Problems to be solved by the invention]
By the way, it is preferable that the finish of the pizza is sufficiently heated inside, can be appropriately burnt on the lower surface of the dough, and can also be lightly burned on the dough around the upper surface. This requires baking pizza quickly at high temperatures.
[0004]
However, in the conventional gas furnace for pizza, although the exhaust from the underfloor burner and the exhaust from the side burner are guided upward along the side wall of the heating chamber, the temperature near the ceiling of the heating chamber becomes very high, In contrast, the temperature near the hearth of the heating chamber is lower. Were it to Tsu, in the state where the pizza inside is sufficiently heated, excessively burnt bottom and top surfaces surrounding fabric.
[0005]
Therefore, an object of the present invention is to provide a pizza kiln that can increase the temperature in the vicinity of the hearth of the heating chamber in a short time.
[0006]
[Means for Solving the Problems]
In the pizza kiln according to the first aspect of the present invention, the vertical cross-sectional shape in the width direction extending from the ceiling wall to the side wall of the heating chamber is an arc shape, and the portion extending from the ceiling wall to the side wall is doubled and exhausted therebetween. defining a space to form an exhaust inlet opening to 1/3 or less of the height of the heating chamber on both sides the lower end of the exhaust space, open to the outside on top of the exhaust space exhaust outlet And a gas burner is installed in the back of the heating chamber.
The pizza kiln according to claim 2 of the present invention is characterized in that, in the invention of claim 1, the exhaust suction port is formed over substantially the entire length of the side wall of the heating chamber .
Moreover, in the pizza kiln according to claim 3 according to the present invention, in the invention according to claim 1 or 2 , a plurality of ridges are formed on the inner surface of the portion extending from the double ceiling wall to the side wall. It is said.
[0007]
According to the pizza kiln of the present invention, the hot air heated by the gas burner rises up to the ceiling in the heating chamber, descends from the ceiling along the inner surface of the ceiling wall and the inner surface of the side wall, and is exhausted from the exhaust suction port at the lower side of the side wall. In the exhaust space, the exhaust space is raised and discharged from the exhaust outlet at the top of the ceiling wall to the outside.
Therefore, in the pizza kiln of the present invention, the heating chamber is heated almost uniformly, that is, the temperature in the vicinity of the hearth becomes sufficiently high, and a pizza having a desired baking condition can be obtained. Since the heating chamber is shut off from the outside by the heat of the exhaust gas exhausted, the thermal efficiency is also good.
For this reason, the position of the exhaust suction port is preferably as low as possible below the heating chamber and is preferably large enough to ensure sufficient exhaust.
Also, the gas burner is installed in the back of the heating chamber to secure a space for baking pizza, and exhaust gas is also discharged from the pizza outlet / inlet, so it is preferable that the gas burner be located far from the inlet / outlet. Because of the reason.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show a pizza kiln according to the present invention. FIG. 1 is a front view of the pizza kiln, FIG. 2 is a side view of the pizza kiln, and FIG. 3 is a width of the pizza kiln. FIG. 4 is a side sectional view of the pizza kiln sectioned in the depth direction.
[0009]
As shown in FIGS. 1 and 2, the pizza kiln has an upper portion formed in a bowl shape, and as shown in FIG. 1, a pizza inlet 1 for taking in and out pizza is formed in the front upper stage portion. At the lower end of the pizza insertion slot 1, a guide plate 2 for placing and removing pizza is provided. In addition, a control box 3 for controlling the ignition and heating power of the gas burner is disposed in the front middle stage, and a door for a space (described later) in which the gas cylinder is accommodated and the gas burner is repaired and replaced. 4 is installed. Further, a temperature indicator 5 is disposed on the front side next to the control box 3, and as shown in FIG. 2, an exhaust duct 6 is installed in the upper middle.
[0010]
And this pizza kiln is entirely covered with the iron plate 7, and the heating chamber 10 is formed in the upper part. As shown in FIGS. 3 and 4, the heating chamber 10 is flush with the ceiling wall 11 and the side wall 12 made of a refractory material such as bricks attached to the inside of the iron plate 7, and the upper surface of the guide plate 2. It is defined by a hearth 13 composed of a refractory material such as brick and the like, and a front wall 14 and a rear wall 15 similarly composed of a refractory material such as brick.
Further, in the heating chamber 10, an iron plate 17 is disposed from the ceiling portion to the side portion with a predetermined interval via a stud bolt 16 and the like, and the iron plate 17 is arranged on the inner wall 11 a of the ceiling wall 11 in the heating chamber 10 and The inner wall 12a of the side wall 12 is constituted. In the heating chamber 10, the lower end of the iron plate 17 extends to a position slightly away from the hearth 13, and an exhaust space 18 is defined between the iron plate 17, the side wall 12, and the ceiling wall 11. The gap between the lower end of the iron plate 17 and the hearth 13 forms an exhaust gas inlet 18 a into the exhaust space 18, and the exhaust wall 18 communicates the exhaust space 18 and the exhaust duct 6 with the ceiling wall 11. An outlet 18b is formed.
Further, in the heating chamber 10, an opening 13 a that communicates the space 19 defined by the hearth 13 and the heating chamber 10 is formed at the back of the hearth 13, and a brick-like shape is formed at the periphery of the opening 13 a. A block 20 made of a refractory material is disposed. And the gas burner 21 is installed in the opening 13a.
[0011]
In this pizza kiln, the hot air from the gas burner 21 rises to the inner surface of the inner wall 11a of the ceiling wall 11, then falls along the inner wall 11a of the ceiling wall 11 and the inner wall 12a of the side wall 12, and from the exhaust suction port 18a to the exhaust space 18 Then, the air is raised in the exhaust space 18 and discharged from the exhaust outlet 18b at the top of the ceiling wall 11 through the exhaust duct 6 to the outside. A part of the exhaust gas that has risen up to the inner surface of the inner wall 11 a of the ceiling wall 11 is guided to the front part of the heating chamber 10 and is discharged from the pizza inlet 1 to the outside.
[0012]
In the above embodiment, the heating chamber 10 is formed in a bowl shape. This is because hot air is lowered along the ceiling wall 11 and the side wall 12 without staying in part, and the front wall 14 is made vertical so as to suppress the outflow of hot air from the pizza inlet 1. However, basically, the hot air rising up to the ceiling wall 11 may be lowered to the vicinity of the hearth 13, and if the exhaust air inlet 18 a of the heating chamber 10 is formed near the hearth 13, The shape of the heating chamber 10 does not matter. Further, as shown in FIG. 5, the iron plate 17 is manufactured by casting, and a plurality of ridges 17 a extending over almost the entire length are formed on the inner surfaces of the inner wall 11 a of the ceiling wall 11 and the inner wall 12 a of the side wall 12. The surface area of the ceiling wall 11 and the side wall 12 may be increased, and the time for the hot air rising to the ceiling wall 11 to fall to the exhaust suction port 18a may be delayed and the hot air may be scattered.
Furthermore, a coating material that emits far infrared rays may be applied to the inner surface of the iron plate 17 so that far infrared rays are additionally emitted into the heating chamber 10.
The height of the exhaust suction port 18a is preferably low as long as it does not hinder the combustion of the exhaust gas and the gas burner 21, and is preferably 1/3 or less of the height of the heating chamber 10. Moreover, the opening part of the exhaust suction port 18a does not necessarily need to be formed in the entire depth of the heating chamber 10, and may be partially formed in one place or a plurality of places.
Moreover, although the lower one is preferable in order to raise the thermal efficiency of the heating chamber 10, the height of the pizza insertion slot 1 is set suitably considering that the state where the pizza is burnt can be viewed from the outside. Furthermore, in the said embodiment, the ceiling wall 11 and the side wall 12 are doubled by the iron plate 17, and the exhaust space 18 is formed, However, A material is not limited to the iron plate 17, If it is a board material which can endure heat Needless to say, the exhaust space 18 may be formed in the ceiling wall 11 and the side wall 12 . If the height of the block 20 is too high, the temperature of the hearth 13 near the gas burner 21 becomes too low, and if it is too low, the temperature of the hearth 13 near the gas burner 21 becomes too high. If the height of the block 20 is too low, the hot air from the gas burner 21 may escape directly from the exhaust inlet 18a without reaching the heating chamber 10. Therefore, the height of the block 20 is appropriately set in consideration of the above.
As for the width of the opening 13a, it is preferable that the width of the opening 13a is as long as possible in the width direction of the heating chamber 10 for heat uniformity. However, the end in the width direction of the opening 13a is close to the lower side of the exhaust inlet 18a. If the pressure reaches the upper limit, the exhaust from the gas burner 21 may escape directly from the exhaust inlet 18a without reaching the heating chamber 10. Therefore, it is necessary to set the width of the opening 13a as appropriate.
[0013]
【The invention's effect】
As described above, according to the pizza kiln according to the present invention, the hot air heated by the gas burner rises in the heating chamber to the ceiling, descends from the ceiling along the ceiling wall inner surface and the side wall inner surface, It is introduced into the exhaust space from the exhaust suction port, rises in the exhaust space, and is discharged to the outside from the exhaust outlet at the top of the ceiling wall.
Therefore, in the pizza kiln of the present invention, the heating chamber is heated almost uniformly, that is, the temperature in the vicinity of the hearth becomes sufficiently high, a pizza having a desired baking condition is obtained, and the pizza oven passes through the exhaust space. Since the heating chamber is shut off from the outside by the heat of the exhausted gas, the thermal efficiency is good.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a pizza kiln according to the present invention.
FIG. 2 is a side view of the pizza kiln shown in FIG.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along line BB in FIG.
FIG. 5 is a partial front view showing a modification of the ceiling wall and the side wall of the pizza kiln according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pizza inlet 2 Guide plate 6 Exhaust duct 10 Heating chamber 11 Ceiling wall 11a Inner wall 12 Side wall 12a Inner wall 13 Furnace 13a Opening 14 Front wall 15 Rear wall 16 Stud bolt 17 Iron plate 17a Rib 18 Exhaust space 18a Exhaust inlet 18b Exhaust Discharge port 20 Block 21 Gas burner

Claims (3)

The widthwise cross-sectional shape extending from the top wall to the side wall of the heating chamber with an arc-shaped, defines an exhaust space therebetween forms a location spanning the side walls from the top wall to the double, both sides of the exhaust space An exhaust suction opening that opens to a height of 1/3 or less of the height of the heating chamber is formed at the lower end, an exhaust outlet that opens to the outside is formed at the top of the exhaust space, and a gas burner is installed at the back of the heating chamber. Pizza kiln characterized by having been installed. The pizza kiln according to claim 1, wherein the exhaust inlet is formed over substantially the entire length of the side wall of the heating chamber . 3. The pizza kiln according to claim 1 , wherein a plurality of ridges are formed on an inner surface of a portion extending from the ceiling wall to the side wall configured in a double manner . 4.

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