JPS6137259Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an open (baking chamber) having a conveyor inside.

[Conventional technology]

As is well known, ovens with internal spiral conveyors can bake 20 to 150 bags of flour per hour, and are indispensable in the bread manufacturing industry, which requires mass production. As shown in FIG. 6, in the conventional oven, a food mold 2 containing dough such as bread is loaded on a conveyor 1 installed in the oven, and is conveyed in the direction of the arrow inside the oven. It is now being fired. In this case, generally, the combustion parts 30, 30, in which the slit-shaped nozzles 3a of the two burners 3 are arranged, are attached below the conveyor 1 in parallel to the conveying direction of the conveyor 1. The slit-shaped craters 3a are arranged at regular intervals and all face the same direction (upward in the figure).

Next, the lower portion of the conveyor 1 will be explained.

As shown in FIG. 7, the conveyor 1 includes a base 4 having a raised central portion, side plates 5 fixed to both ends of the base 4, and a central portion of the bottom surface of the base 4. a support arm 6, a bearing 7 rotatably fitted into the lower end of the support arm 6;
It consists of a guide rail 8 that transports the base 4 by rolling both wheels of this bearing 7. The food mold 2 is loaded on the upper surface of the base 4.

In the same figure, the combustion part 3 of two burners 3
0 and 30 are attached parallel to the transport direction of the conveyor 1 so as to sandwich the guide rail 8. As mentioned above, the slit-shaped nozzles 3a provided in the combustion section 30 of the burner 3 all face in the same direction. combustion part 30 of two burners 3,
30 is fixed to a substrate 10 attached below the conveyor 1 by a mounting bracket 9,
It is fixed and holds its position.

[Problem that the invention attempts to solve]

In the above-mentioned conventional oven for baking dough such as bread, which has an internal conveyor, there have been problems as described below.

That is, as shown in FIG. 6, the combustion parts 30, 30 of the two burners 3 are attached parallel to the conveyance direction of the conveyor 1, so that the starting end X of the conveyor 1
The conveyor 1 is always constant from
In other words, only a certain portion of the food mold 2 is heated. As shown in FIG. 6, these are the combustion parts 30, 30 of the two burners 3 in which the slit-shaped crater 3a is arranged, that is, the upper end part of the food mold 2 and the guide rail in the same figure. 8
This is the part slightly below the part. As a result, when only a certain portion of these food molds 2 is baked while being conveyed by the conveyor 1, the burner 3 is always turned on.
Since it is exposed to the high temperature air of the combustion part 30 of the food mold 2, there is a problem that the dough for bread or the like stored in the food mold 2 is unevenly baked.

In addition, the following problems arose. This is related to the above point, but in the baking process, dough such as bread is not always baked to a certain size, so sometimes a long dough that is longer than the width of conveyor 1 is baked. Sometimes I do. At this time, if the part of the fabric protruding from the width of the conveyor 1 is long, the side edge of this part will be quite far away from the combustion part 30 of the burner 3, and therefore the high temperature air from this combustion part 30 will no longer exposed. As a result, large uneven baking occurred between the side edges and the center of the long dough. To avoid this, when baking a long piece of dough, it is good to switch the length and breadth of the dough to reduce the part that protrudes from the width of the conveyor 1, but if the dough is long in both length and breadth, For some fabrics,
It was impossible to suppress the occurrence of uneven cooking.

(Means for solving the problem) This invention was made in view of the above circumstances, and the specific technical means for solving the problem is to install a conveyor inside and a conveyor in the conveying direction. In an oven having an attached heating device in which one or a plurality of combustion parts, each of which is parallel, is formed, the one or more combustion parts, each of which is parallel,
The purpose is to make it movable so that its installation direction can be changed freely.

[Effect]

This invention adopts such specific technical means, and by varying the position of the combustion part of the burner, it can be baked uniformly over the entire surface of bread dough of different sizes being baked while being conveyed by a conveyor. exposed to hot air from the combustion section. Therefore, since this dough receives heat evenly, no uneven baking occurs in the dough after baking.

〔Example〕

This invention will be explained in detail below based on the drawings showing one embodiment thereof.

As shown in FIG. 1, a food mold 21 containing dough such as bread whose length is considerably longer than the width of the conveyor 1.
are loaded and conveyed on the conveyor 1 in the direction of the arrow. Two burners 31 and 32 are attached below this conveyor 1. The two burners 31 and 32 are connected at one end to the gas supply device 9. Among these, the burner 31 has one end inserted into a groove 10 formed on the outer circumferential surface of the gas supply device 9, and is slidable within this groove 10. Then, at a desired position within the groove 10, that position is held and fixed. One end of the other burner 32 is joined to and fixed to the gas supply device 9.

These two burners 31 and 32 extend from the gas supply device 9 toward the conveyor 1 at approximately the same height as the guide rail 8. When the burner 31 on the right side facing the conveyor 1 reaches the guide rail 8, it is bent downward into a U-shape and extends so as not to come into contact with the guide rail 8. And food type 2
1, it extends to the vicinity of the upper end as seen in the figure, and there, with a heat-resistant bellows 11 interposed as a joint, it bends to the left in the conveying direction (direction of the arrow).
Further, a combustion part 310 is formed which extends downward from the conveyor 1, and in which slit-shaped fire ports 31a are arranged at appropriate intervals. The tip of this combustion part 310 extends to a point where it just touches the guide rail 8.

On the other hand, the burner 32 on the left side when facing the conveyor 1 extends from the gas supply device 9 and is connected with a heat-resistant bellows 11 as a joint, similar to the burner 31 on the right side, before reaching the guide rail 8. It is bent to the left and extends below the conveyor 1 almost parallel to the burner 31 on the right side, forming a combustion part 320 in which slit-shaped craters 32a are arranged at regular intervals. There is. The tip of this combustion portion 320 extends to near the lower end of the food mold 21. The fire ports 31a and 32a arranged at regular intervals in the combustion parts 310 and 320 are all provided on the right side when facing the conveyance direction.

Next, the lower portion of the conveyor 1 will be explained.

As shown in FIG. 2, the conveyor 1 includes a base 4 having a raised central portion, side plates 5 fixed to both ends of the base 4, and joined to the center of the bottom surface of the base 4. A support arm 6, a bearing 7 rotatably fitted into the lower end of the support arm 6, and a guide rail 8 that transports the base 4 by rolling both wheels of the ring 7. It is configured. A food mold 21 whose width is longer than the width of the conveyor 1 is loaded on the upper surface of the base 4. The combustion portions 310, 320, in which the slit-shaped craters 31a, 32a are provided, are attached at approximately the same height as the upper end of the guide rail 8, and approximately parallel to the base 4. Although not shown in the figure, the combustion parts 310 and 320 are movably held by mounting fittings or the like so that the direction of attachment thereof can be changed freely by the heat-resistant bellows 11 (see Fig. 1). ing.

Next, the baking of the dough having a width shorter than the width of the conveyor 1 will be explained below with respect to the food mold 21 that stores dough such as bread having a long width as described above.

As shown in FIGS. 3 and 4, a food mold 22 containing dough such as bread, which is shorter than the width of the conveyor 1, is loaded onto the conveyor 1 in the direction of the arrow.
being transported. In this case, the gas supply device 9
The burner 31 on the right side facing the conveyor 1 is inserted into a groove 10 formed on the outer circumferential surface of the conveyor 1 so as to be slidable and fixed at a desired position.
The one end of the burner 31 is released from the fixed state, and the one end of the burner 31 is moved within the vertically long groove 10, and is fitted into the bent part that is the root of the combustion part 310 of the burner 31. The bellows 11 is placed at a position approximately corresponding to the upper end of the eating mold 22. Then, when you reach that position, groove 10
The one end portion of the burner 31 is fixed inside.

The above-mentioned U-shaped bent portion 12 provided on the burner 31 must be provided so as not to come into contact with the guide rail 8. At this time, when one end of the burner 31 inserted into the groove 10 reaches the lowest end of the groove 10, the upper end 12a of the bent portion 12 is prevented from contacting the upper end of the guide rail 8. In addition, when one end of the burner 31 reaches the uppermost end of the groove 10, the lower end 12b of the bent portion 12 must be provided so as not to come into contact with the lower end of the guide rail 8.

Since the bellows 11 of the burner 31 can freely change the direction in which the combustion part 310 is attached, it is adjusted so that the tip of the combustion part 310 comes into contact with the guide rail 8 just a little. In addition, bellows 11
Once the combustion part of the burner has been positioned, it is necessary to have a function that prevents the position from changing easily, so it goes without saying that a material with excellent heat resistance must be used. Furthermore, a material with high mechanical strength must be used.

Next, burner 32 on the left side facing conveyor 1
For this purpose, the bellows 11 may be adjusted so that the tip of the burning portion 320 comes to the lower end of the food mold 22.

Since this invention has the configuration described above, the conveyor 1 is constructed as shown in FIGS. 1 to 4.
Any part of the food molds 21, 22 that are conveyed above must be exposed to the high temperature air near the combustion parts 310, 320 of the burners 31, 32 at least once from the start end X to the end end Y of the conveyor 1. pass through. Therefore, by being exposed to this high-temperature air, the dough, such as bread, accommodated in the food molds 21 and 22 is evenly baked.

Further, this point will be explained in detail. As shown in FIG. 5, the food mold 2 is divided into two parts, upper and lower, starting from the guide rail 8 part, and the heating situation by the burner 31 will be explained using the upper part as an example. Although the slit-shaped nozzles of the combustion parts 310, 320 of the burners 31, 32 are not shown in the figure, they are assumed to be arranged at appropriate intervals. The arrow in the figure indicates the conveyance direction.

First, in the food mold 2a located at the starting end X of the conveyor (not shown), the upper end A of the food mold 2a is
However, the heating by the combustion part 310 of the burner 31 is greater than the other central part B and lower end part C. Then, in the eating mold 2b that has been conveyed by the conveyor and has reached the intermediate position Z, the most heated part is the center part B, and both the upper end part A and the lower end part B receive the same degree of heating. Food mold 2 that has been further conveyed and has reached the terminal end Y of the conveyor
c, the lower end c is heated the most, then the middle part B,
Then, the upper end portion A is formed. In other words, from the start end X to the end end Y of the conveyor, the most heated part of the food mold 2 changes sequentially from the upper end A to the center B and finally to the lower end C. be.

Of course, the above description also applies to the portion of the food mold 2 below the guide rail 8 portion. Therefore, during the baking process of bread or other dough housed in the food mold 2, different parts of the food mold 2 are always heated sequentially in a certain direction when conveyed by a conveyor. Therefore, the heat is distributed evenly to the dough, such as bread, and there is no uneven baking.

In this embodiment, the burner is attached below the conveyor, but it may be attached only above the conveyor. Further, it may be attached either above or below the conveyor.
However, if it is installed above the conveyor, there must be some distance between it and the top of the food molds loaded on the conveyor, otherwise hot air will be blown directly from the burner nozzle, resulting in over-baking. Become.

In this embodiment, the number of combustion parts in which the burner ports attached to the conveyor are arranged is two, but it may be one or three or more.
However, the food mold must be attached so that it can move from one end of the conveyor to the other so that any part of the food mold being conveyed on the conveyor is heated evenly.

In this embodiment, the slit-shaped nozzles of the burner are all arranged facing to the right in the direction of conveyance of the conveyor, but they may be oriented in the opposite direction. When two or more combustion parts are attached, it is better to make the direction of the slit-shaped crater of each combustion part the same to reduce the occurrence of uneven burning.

In this embodiment, a burner was used as a heating device provided in the oven, but other heating devices such as an electric heating device may be used.

[Effect of idea]

As is clear from the above description, the oven according to this invention has a conveyor inside, and one or more combustion sections attached in the conveyance direction of the conveyor, each of which is parallel to the other. The oven is equipped with a heating device in which the combustion part or the plurality of combustion parts, each of which is parallel to the other, is movable so that the direction of its installation can be freely changed. Since the dough for bread, etc. to be baked receives heat evenly from the heating device, the heat is distributed evenly to the dough, and there is no uneven baking, resulting in baked bread, etc. that is sufficiently rich in flavor and aroma. is obtained.

Further, since the bellows is fitted as a joint to the bent portion which is the base of the combustion portion of the burner, the direction in which the combustion portion of the burner is attached can be changed at will. As a result, even if the width of the dough to be baked, such as bread, varies, the burning part can be moved according to the width, so heat is evenly distributed over the entire surface of the dough and no uneven baking occurs.

[Brief explanation of drawings]

The drawings, from Fig. 1 to Fig. 5, show one embodiment of the oven with a movable heating device according to this invention, and Fig. 1 shows a plan view when the food mold is longer than the width of the conveyor. Fig. 2 is a vertical sectional view taken along the line - in Fig. 1, Fig. 3 is a plan view when the food mold is shorter than the width of the conveyor, and Fig. 4 is a perpendicular sectional view taken along the - line in Fig. 3. 5 is an explanatory diagram of the heated state of the food mold being transported, FIG. 6 is a plan view of the conventional example, and FIG. 7 is a vertical sectional view taken along the - line in FIG. 6. . 1... Conveyor, 2, 21, 22... Food mold,
3, 31, 32...Burner, 3a, 31a, 32
a...Slit-shaped crater, 30, 310, 320
...Burner combustion part, 8...Guide rail, 9...
...Gas supply device, 10...groove, 11...bellows.

Claims (1)

[Claims for Utility Model Registration] (1) It has a heating device inside which is formed a conveyor and one or more combustion parts attached in the conveying direction of the conveyor, each of which is parallel to the other. An oven with a movable heating device, characterized in that the one or a plurality of parallel combustion sections are movable so that the direction of attachment thereof can be freely changed. (2) The oven with a movable heating device according to claim 1, which is made movable by fitting a heat-resistant bellows to the base of the combustion part.