JPS61260859A - Laver roasting device - Google Patents

Abstract

PURPOSE:To contrive high-speed roasting of sheet laver, by setting heat sources at the upper part of a tunnel furnace, hanging round a heat-resistant endless conveyor between rotators set apart and horizontally at the lower part of the furnace to form a laver transportation path. CONSTITUTION:The heat proper sources 18 are set at the upper part of the tunnel furnace laid in the horizontal direction, the plural rotators 22a-22b are set horizontally apart in given distances at the lower part of the furnace 12, and the endless conveyor 26 made of a material of a heat-resistant resin such as a heat-resistant silicone resin, etc. is hung between the rotators to give a laver transportation path. The conveyor 26 is made to run in a given direction by driving the rotator, the sheet laver 4 fed to and placed on the conveyor 26 one by one at given intervals is adsorbed and transported. Conse quently, the sheet laver 14 is surely transported, the laver is roasted at high speed, occurrence of noise during operation is reduced and a starting time required for beginning of roasting is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a seaweed baking device, and more specifically, it relates to a seaweed baking device, and more specifically, it relates to a baking device for baking seaweed, which consists of a conveyor such as an endless rope made of heat-resistant resin in a tunnel-shaped baking furnace. form a conveyance path,
A novel seaweed baking method in which the sheet-shaped seaweed placed on the endless conveyor is adsorbed by the static electricity generated when the endless conveyor is driven, and the seaweed can be stably conveyed at high speed without floating. It is related to the device.

Conventional technology As a sheet-shaped seaweed baking device, a large number of electric heaters are installed above a tunnel-shaped furnace, a conveyor such as a metal chain that circulates endlessly is placed below the furnace, and the sheet is placed on the conveyor. A baking furnace is known that is configured to heat and bake sheet-like seaweed while conveying it within the furnace body. This type of seaweed baking apparatus raises the atmospheric temperature in the furnace by heat transfer and convection from an electric heater, and heats the sheet-shaped seaweed with the radiant heat, thereby baking the seaweed. There is also a model that uses a far-infrared heating element instead of using the electric heater, and uses the far-infrared rays emitted from the far-infrared heating element to induce internal heat generation in the seaweed, thereby baking or drying the seaweed. .

Regardless of which heating source is used, a chain conveyor or mesh belt is generally employed as the nori conveying means disposed within the furnace of the nori baking apparatus. For example, sprockets are rotatably arranged facing each other at the entrance and exit of a horizontally arranged furnace body of a seaweed baking device, and an endless chain is stretched parallel to the sprockets.

A conveyor bar is connected between the links of this parallel chain to convey the seaweed (other metal mesh belts may also be used).
is formed, and sheets of seaweed are placed one by one at predetermined intervals on this conveyance surface and conveyed.

Problems to be Solved by the Invention However, the sheet-shaped seaweed transported by the above-mentioned transport means is thin and lightweight;
If the conveyance speed is increased, the air resistance inside the furnace causes it to rise from the conveyance surface, making it impossible to convey it effectively.Therefore, there is a strong desire in the industry to shorten the required processing time by firing while conveying at high speed. There were limits to how much we could respond to requests. In addition, even if the conveyance speed is not increased, slips may occur between the conveyance surface such as a mesh belt and the sheet-like seaweed, causing disturbances in the rows in the conveyance direction of the sheet-like seaweed that should be conveyed one by one at predetermined intervals. However, defects such as overlapping between the front and back seaweed have also been pointed out. Furthermore, mechanical noise is generated during operation due to the running of the chain or mesh belt, and the durability is poor.

There are drawbacks such as chain breakage. Further, since the heat capacity of the metal conveyor is large, there are disadvantages such as the fact that the seaweed cannot be conveyed and baked until the inside of the furnace is uniformly heated, and that time and energy are wasted for preheating.

Purpose of the Invention The present invention has been proposed in view of the above-mentioned drawbacks inherent in conventional seaweed baking devices, and has been proposed to suitably solve the problems. The purpose is to achieve faster firing, reduce noise generation during operation, and shorten the rise time required to start firing.

Means for Solving the Problems In order to achieve the above object, the seaweed baking apparatus according to the present invention includes:
An appropriate heating source is arranged below the tunnel-shaped furnace body arranged in the horizontal direction, and a plurality of rotating bodies are arranged horizontally at a predetermined distance below the furnace body, and a heat-resistant heat source is placed between the rotating bodies. An endless conveyor made of resin is rolled up to form a seaweed transport path, and by driving the rotating body, the endless conveyor is made to run in a predetermined direction, and one sheet is placed on the endless conveyor at a predetermined interval. It is characterized in that it is configured to adsorb and convey the sheet-shaped seaweed that is supplied and placed.

Embodiments Next, preferred embodiments of the seaweed baking apparatus according to the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a longitudinal cross-sectional view of the present invention when it is used in a far-infrared heating type seaweed baking device, Fig. 2 is a cross-sectional view of Fig. 1, and Fig. 3 is an internal plan view of Fig. 1. . The seaweed baking apparatus 10 shown in FIG. 1 basically consists of a tunnel-shaped furnace body that extends horizontally in the longitudinal direction. The means are movably arranged. That is, a firing furnace 12 consisting of an elongated casing made of a stainless steel plate or the like and having a rectangular cross section is horizontally arranged on appropriate support legs 11, and has an inlet 1 on the upstream side that serves as a seaweed supply port.
3 and an outlet 15 serving as a discharge port for the baked seaweed are each opened by a required size. In the lower part of the interior of the furnace body 12, there is a conveying means 1, which will be described later, for placing and conveying sheets of seaweed 14 one by one at predetermined intervals along the horizontal longitudinal direction of the furnace body 12.
6 are arranged. Further, above the furnace body in which the conveyance means 16 runs, there is a far-infrared heating element 18, for example, which will be described later.
A plurality of them are arranged at predetermined intervals perpendicular to the direction of transporting the seaweed. And far infrared heating element 1 installed inside the furnace body
The sheet-shaped seaweed 14 placed on the conveyance means 16 is conveyed below 8, and the sheet-like seaweed is internally heated by far infrared rays emitted from the heating element 18 and suitably baked.

The conveying means 16 used in the seaweed baking apparatus according to the present invention has a seaweed conveying path formed by a plurality of endless ropes made of heat-resistant silicone resin.
A plurality of rotating bodies 22 (five in this example) as shown in FIG. A plurality of endless ropes 26 made of heat-resistant silicone resin are wound in parallel in multiple rows.

For example, among the rotating bodies 22, rotating bodies 22a are horizontally disposed on the upstream inlet side and the downstream outlet side in the seaweed conveying direction.
As shown in FIG. 4, a plurality of circumferential grooves 24 are formed at equal intervals in the axial direction on the circumferential surface of 22a. Also the first
As shown in FIG. 3 and FIG. 3, each side of the three rotating bodies 22 b, 22 c, and 22 d located in the middle part of the firing furnace 12 has a recess provided in the rotating bodies 22 a, 22 a. The number of circumferential grooves 24 is twice as many as the number of circumferential grooves 24. An endless rope 26 is wound and tensioned in each circumferential groove 24 between the opposing rotating bodies. Specifically, as shown in FIG. 3, a plurality of endless ropes 26 are arranged in parallel at predetermined intervals in the axial direction between the adjacent rotating bodies 22e and 22d. Another plurality of endless ropes 26 are wound and stretched in parallel between the rotating body 22d and the adjacent rotating body 22c on the upstream side thereof. In this way, the intermediate rotating bodies 22 b, 22 c, 22 d in the furnace body have the rotating bodies 22 a, 22 on the furnace inlet side and outlet side.
This means that twice as many endless ropes 26 are stretched as in e. The endless rope 26 is made of a heat-resistant silicone resin that can sufficiently withstand the heating atmosphere for baking the seaweed in the baking furnace 12, and preferably has a round rod-like shape in cross section.

A sprocket 30 is fixed to one end of the rotating shaft 28 of the rotating body 22e, and another sprocket 34 is attached to the output shaft of a motor 32 attached to the seaweed baking device 10.

A power transmission chain 36 is wound around these sprockets 30, 34. The plurality of endless ropes 26 transport the sheet-like seaweed 14 placed thereon, and also transmit power from the motor 32. That is, the rotation of the motor 32 is caused by the rotation of the chain 36.
The rotating body 22a is rotated through 22 d −+ 22 c → 22 b → 22 a.
It is transmitted via each endless rope 26 in this order.

Further, between the rotating bodies 22, the plurality of rows of endless ropes 2
A plurality of rollers 40 for preventing the silicone rope 6 from sagging downward and tension rollers 41 for applying tension to the silicone rope 26 are arranged at required intervals. The roller 40 and the tension roller 41 are so-called free rollers, and the number of rollers provided is equal to the number of rollers provided on the rotating body 22.
This is changed depending on the interval length. According to the nori conveying device according to the present invention, the endless rope 26 made of silicone resin constituting the conveying means 16 generates static electricity while running, as will be described later, and transfers the sheet-like nori 14 onto the rope surface. Adsorb. However, when the sheet-like seaweed 14 is discharged from the outlet 15 of the furnace body, the static electricity prevents the sheet-like seaweed from being smoothly removed from the endless rope 26, so that the seaweed is transported as shown in FIGS. A static eliminating brush 38 is provided at the end of the path.

The far-infrared heating element 18 is a heat generation source for exciting thermal vibrations inside the object to be heated, and as shown in FIG. 44 is advantageously used. Such far-infrared heating elements are known, for example, from Japanese Patent Publication No. 47-25010. In addition, so-called vapor-deposited far-infrared heating elements, in which metal oxides are vapor-deposited on the surface of stainless steel or the like, are also used. In the figure, reference numeral 46 indicates an insulator, and 48 indicates a terminal.As an example of the structure, the far-infrared heating element 18 is attached to the outer surface of the side wall of the firing furnace 12, as shown in FIGS. 2 and 6. An L-shaped member 52 is fixed via a screw 54, and a fixing member 50 is attached to this L-shaped member 52. The insulator 46 portion of the far-infrared heating element 18 is fastened to the fixing member 50, so that the far-infrared heating element 18 can be fixed facing into the furnace. Further, above the far-infrared heating element 18, a reflector plate 20 is installed in the baking furnace 12 in order to efficiently irradiate the sheet-shaped seaweed 14 with far-infrared rays emitted from the heating element 18.
It is attached inside via an L-shaped member 56.

In addition, on the bottom of the casing that forms the main body of the seaweed baking device 10, there is a back cover 58 for cleaning debris such as seaweed pieces that accumulate inside the furnace body 12 as the sheet-like seaweed 14 is transported, as shown in FIG. As shown in the figure, it is attached via hinges 60 and 60 so that it can be opened and closed.

A handle 62 for opening and closing the back cover is provided at the end opposite to the hinge-connected end of the back cover 58. Furthermore, an exhaust duct 64 for controlling the room temperature is provided at the top of the seaweed baking apparatus 10.

A second embodiment of the present invention is shown in FIG. 8. A seaweed baking apparatus according to this embodiment uses an electric heater 66 as its heating source, and the baking furnace 12 in which this heater 66 is installed A conveying means 16 for the sheet-like seaweed 14 is disposed inside. The configuration and power transmission mechanism of the conveying means 16 are as follows:
This is similar to the first embodiment described above. The electric heater 6
6, the entire firing furnace 12 is covered with a heat insulating material 68 in order to keep the atmospheric temperature within the furnace constant.

Next, the operation of the nori baking apparatus according to the present invention constructed as described above will be explained. As shown in Figure 1.

Inside the firing furnace 12, an endless lobe 26 is driven by the motor 32 and travels in circulation, and the sheet-like seaweed 14 is fed one by one onto the endless lobe 26 and transported horizontally through the furnace. While the sheet-like seaweed 14 is being transported from the seaweed inlet to the outlet in the baking furnace 12, the sheet-like seaweed 14 is Suitably fired. In this case, in the present invention, since the endless lobe 26 made of heat-resistant silicone resin is used as the conveying means, the endless lobe 26 generates and carries static electricity while traveling.

For this purpose, the sheet-like seaweed 14 is attracted to the conveying surface consisting of the endless lobes 26 under the action of the electrostatic force and is stably conveyed. That is, even when the sheet-like seaweed 14 is transported at high speed, it does not float up due to air resistance within the furnace body, and therefore, the transport means consisting of the endless rope 26 can be operated at high speed to greatly improve the seaweed burning efficiency.

Note that static electricity is removed from the sheet-shaped seaweed 14 that is baked while being conveyed by the endless rope 26 by the above-mentioned static elimination brush 38 provided on the exit side of the baking furnace 12.

Therefore, the sheet-shaped seaweed 14 is not conveyed in the opposite direction below the furnace interior while being adsorbed by the endless lobes 26, but is suitably separated and discharged at the exit of the seaweed baking device.

In addition, even if the operation is not at high speed, the sheet-like seaweed 14 is attracted to the conveying surface of the charged endless rope 26, so the baking furnace 12
The sheet-like seaweed 14 is transported reliably without slipping, and the predetermined intervals of each sheet of seaweed are not disturbed or overlapped with each other. Furthermore, the use of durable silicone lobes as a means of transporting the sheet-like seaweed 14 The mechanical noise generated by the use of metal mesh belts and chains is reduced, allowing quiet operation of the seaweed baking device and eliminating the possibility of chain breakage.

Moreover, since it is an endless conveyor made of resin, there is no need to sufficiently heat the inside of the furnace, and therefore, the time required to start the nori baking operation can be shortened, and wasteful consumption of thermal energy can be prevented.

In the embodiments of the present invention, the endless lobes made of heat-resistant silicone resin are used as the endless conveyor. However, static electricity is generated when the endless conveyor runs, and sheet-shaped seaweed is attracted to the conveyor surface. In this case, various endless conveyors made of heat-resistant resin can be used. Further, it does not have to be a lobe-shaped endless conveyor, but may be a belt-shaped conveyor or a mesh belt made of heat-resistant resin fibers.

Furthermore, although the seaweed baking apparatus using a far-infrared heating element and an electric heater has been described, it is of course also suitable to use a schwank burner or the like as the heating means.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of the present invention when it is used in a far-infrared heating type seaweed baking device, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is an internal plan view of Fig. 1, and Fig. 3 is an internal plan view of Fig. Figure 4 is a front view of the rotating body used in the conveyance means of the present invention, Figure 5 is a partially cutaway sectional view showing an embodiment of the far-infrared heating element, and Figure 6 shows the state in which the far-infrared heating element is installed. 7 is a schematic perspective view showing the back cover structure of the seaweed baking apparatus shown in FIG. 1. FIG. 8th Wi is a vertical cross-sectional view when the seaweed baking apparatus according to the present invention is used in an apparatus using an electric heater. FIG, 2 FIG, 5 FIG, 7

Claims (1)

[Claims] An appropriate heating source is arranged above the tunnel-shaped furnace body arranged horizontally, and a plurality of rotating bodies are arranged horizontally at a predetermined distance below the furnace body. An endless conveyor made of resin is rolled up to form a seaweed transport path, and by driving the rotating body, the endless conveyor is made to run in a predetermined direction, and one sheet is placed on the endless conveyor at a predetermined interval. A seaweed baking device characterized by being configured to adsorb and convey sheet-shaped seaweed that is supplied and placed.