JP2003031349A - Continuous high frequency heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous high frequency heating apparatus for efficient and safety heating by avoiding or eliminating a concentration of high frequency energy when a plurality of object to be heated are heated using high frequency while moving continuously in a large-scale apparatus. SOLUTION: Heating units 5 are formed by holding the heating object between a pair of electrodes. A plurality of heating units are moved continuously by using a carrying-in section 6 to a heating zone B. The heating zone B is divided into a sub zone b1 having power supply part 2a and 2b, and a sub zone b2 having power feeding part 3a and 3b. Alternating current is impressed from having power feeding part 3a and 3b to the heating unit 5, and thereby the object to be heated is hot-molded. In this hot-molding, the concentration of high frequency energy can avoid or eliminate due to the division of the heating zone B into two zones.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating device that uses high frequency when heating an object to be heated arranged between electrodes, and particularly to a plurality of electrodes that move continuously. The present invention relates to a continuous dielectric heating device that dielectrically heats an object to be heated by applying a high-frequency alternating current in a non-contact manner.

[0002]

2. Description of the Related Art Conventionally, a high-frequency heating method has been known as a technique capable of efficiently performing a heating process on an object to be heated. Explaining specifically a general high-frequency heating method, a heating object is sandwiched between a pair of opposing heating electrodes, and a high-frequency alternating current (hereinafter, abbreviated as high frequency) is applied to the heating electrodes. The object to be heated is dielectrically heated by. Since this technique uses dielectric heating, there is an advantage that the object to be heated can be uniformly heated and the heating control is easy.

In the heating technique utilizing the above high frequency heating,
Generally, the position of the heating electrode is almost fixed,
By conveying the object to be heated and stopping it, a high frequency is applied to perform heating. As an example of such a technique, for example, Japanese Patent Laid-Open No. 11-42755.
There is a technique disclosed in Japanese Patent Laid-Open Publication No. 2003-242242, which utilizes high-frequency heating in the production of plywood and decorative boards.

In this technique, a pair of flat plate-shaped counter electrodes (heating electrodes) sandwich a flat plate-shaped material to be heated and then high-frequency heating is performed, and the flat plate-shaped member. The upper grid electrode and the lower grid electrode formed by arranging the rod-shaped electrodes in parallel so as to correspond to the surface of the heating material were provided with a second high-frequency heating unit for performing high-frequency heating after sandwiching the material to be heated. The device is used.

Then, for example, an adhesive is applied to the surface of a core material composed of a wooden frame and a metal frame, and a surface material is further superposed thereon to form a material to be heated. The material to be heated is transferred to the first high-frequency heating section by a conveyor, is subjected to high-frequency heating here, and is further transferred to the second high-frequency heating section by a conveyor, where high-frequency heating is performed again.

Therefore, in this technique, not only high frequency heating is performed, but high frequency heating is performed for one processed material by combining different heating electrodes. Therefore, even if the core material contained in the material to be heated is a combination of a plurality of types of materials having different electrical properties, it will be carried out by combining high frequency heating with different heating characteristics,
It is possible to efficiently adhere the surface material to the core material.

On the other hand, the high frequency heating is also applied to a technique for producing a molded product by using a molding die such as a mold, dispensing a molding raw material (raw material) into the molding die, and then heating the molding die. It is possible to do. Here, the method of temporarily stopping the heating object is effective for the heating object having a relatively large size such as a plywood or a decorative board and a relatively high cost per piece, as in the above technique. Like the above moldings, it is relatively small in size and 1
The cost per piece is also inefficient for heating objects.

As a technique for solving the above-mentioned problems, Japanese Patent Laid-Open No. 10-230527 discloses a method for producing a biodegradable molded article using high frequency heating, in order to improve the production efficiency, a large number of molding dies are used. There has been proposed a technique using a continuous manufacturing process of sequentially moving and heating.

Specifically, in the above technique, the molding die as the heating electrode is continuously conveyed by the moving means, and a heating zone for applying a high frequency is provided along the moving path of the molding die. The continuous high frequency heating device of is used. As a moving means, a large number of molds are continuously conveyed by a conveyor means. With such a configuration, when the molding die in which the molding raw material is dispensed is conveyed to the heating zone, a high frequency can be applied to the continuously moving molding die from the power feeding means provided in the heating zone. It will be possible. As a result, when a high frequency is applied, the molding raw material in the molding die can be dielectrically heated without being temporarily stopped, which facilitates control and improves the production efficiency of the biodegradable molded product. .

In particular, in the above-mentioned technique, in the continuous manufacturing process, a non-contact method is used in which a high frequency is applied to the molding die, that is, the heating electrode without directly contacting the electrode or the like. This has the advantage that in the heating zone, the occurrence of sparks and the like can be controlled between the power feeding means and the molding die.

As described above, by using the high frequency heating to continuously heat the object to be heated while conveying it by the moving means, it is possible to uniformly heat the whole object and, depending on the object to be heated, heat the object to be heated. It is also possible to shorten the time.

[0012]

However, in the above technique, if the manufacturing equipment is enlarged in order to further improve the manufacturing efficiency, the following problems will occur in practical use.

That is, in a large-scale heating device, the entire device becomes very large, so that the number of molds continuously conveyed to the heating zone by the conveyor means is considerably large. Therefore, when the scale of the heating device is increased, the number of objects to be heated (raw materials in the molding die) is also significantly increased. Therefore, in a large-scale heating device, the heating zone must be made wider (longer) and the output of the applied high frequency must be increased in proportion to the increase in the number of objects to be heated.

However, when a high-power high frequency is collectively applied to a wide (long) heating zone, the high frequency is localized in a part of the heating zone. This high-frequency localization phenomenon causes concentration of high-frequency energy, resulting in overheating of the object to be heated at the high-frequency localized area or between the molding dies (electrode parts) at the localized area. Therefore, there are problems such as sparks or dielectric breakdowns, and sparks in the power supply / reception part despite the non-contact.

For example, when the scale of the heating device is small, a heating unit 5 (for example, a molding die) is attached to the outer periphery of the conveyor section (conveyor means) 6 as shown in FIG. , Heating zone B
It is assumed that 11 molds 7 can be heated by. At this time, if the high frequency output applied to one heating unit 5 is set to about 0.8 kW, the high frequency output of the power supply unit 2 may be set to about 9 kW.

In this case, since the high frequency output of the entire heating zone B is not so large, even if the high frequency is localized at a specific position in the heating zone B, large high frequency energy will not be concentrated. Therefore, overheating, sparks, etc. do not particularly occur, and there is almost no effect on the production of the molded product.

On the other hand, when the heating device becomes large-scale,
It is necessary to make the heating zone longer and also to make the high frequency output of the entire heating zone very large. Therefore, the high frequency energy concentrated in a part of the heating zone also increases. As a result, the phenomenon of high-frequency energy concentration, which is not a problem in a small-scale heating device, causes overheating, sparking, or even dielectric breakdown. Therefore, it is difficult to apply the above technique to a large-scale heating device.

More specifically, for example, as shown in FIG. 16, the heating unit body 3 is provided on the outer periphery of the conveyor section 6 in three layers.
It is assumed that it is possible to attach 6 pieces and heat 25 heating units 5 in the heating zone B. Furthermore, in order to apply a high frequency of about 0.8 kW to one heating unit 5, the output of the power supply unit 2 is set to about 20 kW.

Therefore, in the above-mentioned large scale example, the heating zone B is doubled or more, and the output of the power source section 2 is doubled or more. Therefore, even if calculated in a single order, there is a possibility that high-frequency energy more than four times as large as that in the case of a small scale will be concentrated.

Moreover, if the heating zone B becomes longer, the uneven distribution of the high-frequency potential is more likely to occur depending on the shape of the power feeding portion 3 provided along the heating zone B. Therefore, when the apparatus is scaled up, there is a high possibility that high-frequency energy more than is simply calculated from the length (width) of the heating zone B and the number of heating units 5 will be concentrated.
Therefore, in order to avoid the concentration of high-frequency energy, it is necessary to limit the length of the power feeding portion 3 having a certain length or more, that is, the length of the heating zone B, which significantly reduces the efficiency of heat molding. It will also happen.

Further, in the above example, the forming means is configured to convey the forming dies only in one row by the conveyor means, but in the case of further increasing the size of the apparatus, the forming dies are arranged to be conveyed in a plurality of rows. You can also In this case, the output of the high frequency is increased by a plurality, and the heating zone is wide by a plurality of rows. Therefore, even higher high-frequency energy will be concentrated.

The present invention has been made in view of the above problems, and an object of the present invention is to generate high-frequency energy when heating a plurality of objects to be heated that move continuously in a large-scale facility by high-frequency heating. It is an object of the present invention to provide a continuous high-frequency heating device that effectively suppresses or avoids the occurrence of the concentration phenomenon and realizes efficient and highly safe heating.

[0023]

In order to solve the above-mentioned problems, a continuous high-frequency heating apparatus according to the present invention includes a heating unit body in which an object to be heated is arranged between at least a pair of electrode parts, and The heating unit includes a plurality of moving means for continuously moving the heating unit along the moving path, and a power feeding means provided along the moving path. A continuous high-frequency heating apparatus for dielectrically heating an object to be heated by continuously applying a high-frequency alternating current, further comprising a plurality of the above-mentioned power feeding means, and one power source means for each power feeding means. It is characterized in that one heating region is formed by arranging the plurality of power supply means in series while being provided.

According to the above construction, when a high-frequency alternating current (high frequency) is continuously applied to the continuously moving heating unit, the heating region, which is a region to which the high frequency is applied, is divided into a plurality of sub-regions. It is configured to be divided into regions, and each lower region is provided with a power supply unit and a power supply unit. Therefore, it is possible to suppress or avoid the occurrence of the high frequency energy concentration phenomenon in the heating region. As a result, it is possible to effectively prevent the overheating of the object to be heated, the occurrence of dielectric breakdown, and the like, and it is possible to perform a very high-quality heat treatment.

In addition to the above structure, the continuous high-frequency heating apparatus according to the present invention is characterized in that the power feeding means applies a high-frequency alternating current to the heating unit body in a non-contact manner.

According to the above structure, since the high frequency is applied in a non-contact manner, it is not necessary to directly contact the electrodes in the heating region between the heating unit forming the heating section and the power feeding means. Therefore, in the heating area, it is possible to avoid the occurrence of sparks in the power supply / reception unit. In addition,
The non-contact power supply in the invention means that the power supply means and the electrode portion are not in direct contact with each other, as described later.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above structure, the power feeding means is in the form of a rail arranged continuously along the heating region in the moving path, and further, the heating is performed. The unit body is characterized by being provided with a power receiving means for receiving an alternating current from the rail-shaped power feeding means in a non-contact manner.

According to the above construction, the rail-shaped power feeding means is provided in the heating area, and the power receiving means is provided corresponding to the rail-shaped power feeding means. Therefore, after the heating unit enters the heating area by the moving means, Along with the movement of the moving means, the heating unit including the power receiving means moves along the rail-shaped power feeding means. Therefore, the heating / drying process can be smoothly and reliably continued until the heating unit passes through the heating region, that is, until the power receiving unit is detached from the power feeding unit.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above-mentioned structure, the power receiving means is formed in a flat plate shape, and the rail-shaped power feeding means has a facing surface facing the power receiving means. It is characterized in that a high-frequency alternating current is applied in a non-contact manner by making the flat plate-shaped power receiving unit face the facing surface.

According to the above arrangement, the flat power receiving means is opposed to the facing surface of the power supplying means in a non-contact manner,
The power receiving unit moves along the rail-shaped power feeding unit. At this time, a capacitor is formed by the power receiving unit, the facing surface facing the power receiving unit, and the space between them. As a result, it is possible to supply power to the continuously moving heating unit in a non-contact manner, and the heating / drying process can be smoothly and reliably continued.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, the rail-shaped power feeding means or power receiving means has an application level of a high frequency alternating current applied to the heating unit body through the power receiving means. Is formed so that the facing area thereof changes along the moving path of the heating unit so as to change.

According to the above configuration, since the level of power supply is changed, the heating level of the heating unit can be adjusted. As a result, by suppressing excessive heating, it becomes possible to avoid scorching or sparking of the heating unit, improve the quality of the object to be heated, and obtain desired physical properties of the finished product. In particular, since the stepwise heat treatment can be carried out at the first or last stage of heating, more appropriate heating becomes possible.

In addition to the above structure, the continuous high-frequency heating apparatus according to the present invention is characterized in that the rail-shaped feeding means is formed so that the area of the facing surface changes along the moving path. There is.

According to the above construction, the area of the facing surface of the power feeding means is changed in accordance with the movement of the heating unit, so that the facing area of the facing surface and the power receiving means is changed. Therefore, the capacity of the capacitor formed by the power receiving means, the facing surface, and the space between them also changes.
As a result, the level of power supply can be changed to change the level of heating, the quality of the object to be heated can be improved, and desired physical properties of the finished product can be obtained.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, the rail-shaped power feeding means changes the application level of the high frequency alternating current applied to the heating unit body via the power receiving means. Further, it is characterized in that the facing interval is changed along the moving path of the heating unit body.

Also with the above configuration, it is possible to adjust the heating level of the heating unit by changing the power supply level. As a result, by suppressing excessive heating, it becomes possible to avoid scorching or sparking of the heating unit, improve the quality of the object to be heated, and obtain desired physical properties of the finished product. In particular, since the stepwise heat treatment can be carried out at the first or last stage of heating, more appropriate heating becomes possible.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above configuration, the length of one of the power feeding means is such that the fluctuation rate of the continuously moving heating unit heated by the entire power feeding means is constant. , Is set to be less than 0.5.

According to the above construction, in one power feeding means,
Since it is possible to reduce the variation in the number of heating units that perform dielectric heating by applying a high-frequency alternating current, it is possible to stabilize high-frequency tuning and reduce the increase or decrease in the anode current value. As a result, not only energy efficiency can be improved, but also spark generation can be avoided.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, further, the power feeding means is arranged in a region corresponding to at least one of an initial stage and a final stage of heating in the heating region. The length of the power feeding means is set so that the fluctuation rate of the heating unit that moves continuously is less than 0.1.

According to the above construction, depending on the object to be heated, the tuning of the high frequency tends to become unstable in the initial stage and the final stage of the heat molding, but even in such an initial stage and the final stage, the heating unit for dielectric heating is used. Fluctuations in the number of bodies can be reduced. Therefore, it is possible to further stabilize the high frequency tuning, and as a result, it is possible to further improve the energy efficiency and more surely avoid the occurrence of sparks.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above structure, the pair of electrode portions includes the power receiving means, and is composed of a feed electrode fed from the power feeding means and a ground electrode grounded. The feed electrode and the ground electrode are characterized by being insulated from each other.

According to the above-mentioned structure, the pair of electrode portions forming the heating unit is composed of the combination of the feed electrode and the ground electrode which are insulated from each other. Therefore, it is possible to perform dielectric heating on the object to be heated by applying a high frequency from the electrode to the object to be heated sandwiched between the electrode and the ground electrode.

The continuous high-frequency heating apparatus according to the present invention is characterized in that, in addition to the above-mentioned structure, the heating area includes a high-frequency application suspension area for temporarily suspending application of the high-frequency alternating current.

According to the above construction, since the heating region includes the high frequency application suspension region, it is not necessary to provide a power feeding means or the like for applying a high frequency in this region. Therefore, it is possible to design the heating equipment so that the high frequency is not applied to the site where the alternating current is likely to be localized, so that the occurrence of the high frequency energy concentration phenomenon can be suppressed or avoided more reliably. In addition, the structure of the heating device can be further simplified by setting the high frequency application suspension region in a region where the power supply means and the like are relatively difficult to arrange.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above-mentioned configuration, the high-frequency application suspension region included in the heating region corresponds to at least one of the initial stage and the final stage of heating in the heating region. It is characterized by being set in the area.

According to the above construction, since the high frequency application pause region is provided in at least one of the initial stage and the final stage of heating, heating according to the object to be heated becomes possible. As a result, the quality of the object to be heated can be improved, and the productivity of the heat treatment can be improved.

The continuous high-frequency heating apparatus according to the present invention is characterized in that, in addition to the above-mentioned configuration, a conveyor means rotatably stretched around a plurality of support shafts is used as the moving means.

According to the above structure, the molding die can be efficiently moved to the heating region, so that the production efficiency of the molded product can be improved. Further, since it can be continuously rotated like an endless track, the installation space for the heating device can be reduced.

[0049]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] The following will describe one embodiment of the present invention with reference to FIGS. 1 to 6. The present invention is not limited to this.

In the continuous high-frequency heating apparatus according to the present invention, a plurality of objects to be heated pass through a region (heating zone) to which a high-frequency alternating current is applied, while sequentially moving together with the electrodes, and the objects to be heated there. The heating zone is divided into a plurality of subzones, and a power supply unit (oscillator) is provided for each subzone.

In the following description, the continuous high-frequency heating device and the heating method are abbreviated as the heating device and the heating method as appropriate. Further, high frequency alternating current is also abbreviated as high frequency as appropriate.

Specifically, the heating device according to the present invention is
As shown in the schematic circuit diagram of FIG. 2, a heating unit 1 and a power supply unit (power supply unit) 2 are provided. The heating unit 1 includes a power feeding unit 3 and a plurality of heating unit bodies 5 ... Corresponding thereto.
For convenience of explanation, only one heating unit body 5 is shown in FIG. The power supply unit 2 includes a high frequency generation unit 21, a matching circuit 22, and a control circuit 23.

The high-frequency generating section (oscillating section) 21 is not particularly limited in its specific constitution as long as it can generate a high-frequency alternating current. Can be used. The matching circuit 22 and the control circuit 23 may be included in this oscillator.

As the matching circuit 22, for example, a configuration including a variable capacitor and a variable coil can be mentioned. This matching circuit 22 changes its electrostatic capacitance and inductance according to the heating target 14,
It is now possible to obtain optimum output and tuning of high frequencies. As the specific configuration of the variable capacitor and the variable coil, conventionally known ones are used and are not particularly limited. Further, the configuration of the matching circuit 22 is not limited to the above configuration including the variable capacitor and the variable coil.

The control circuit 23 is not particularly limited as long as it can appropriately control the output of the high frequency to the heating section 1, that is, the application of the high frequency to the heating zone described later, and the conventionally known control means. Can be used.

The heating unit 5 includes a pair of electrode parts 12
13 and a power receiving unit 4 provided in the electrode unit 12, and a heating target 14 is provided between the electrode units 12 and 13.
Is pinched. Further, the power receiving and receiving unit 11 is configured by the power receiving unit 4 and the power feeding unit 3.

The electrode parts 12 and 13 are the objects to be heated 14
Are arranged so as to be insulated from each other by sandwiching, and the induction heating is generated in the heating target object 14 by the high frequency applied via the power supply / reception unit 11. These electrode parts 12 and 13
Among them, the electrode part 12 is a power supply electrode connected to the power supply / reception part 11, and the electrode part 13 is a ground electrode connected to the ground. More specific configurations of the supply electrode and the ground electrode, that is, the electrode portions 12 and 13 are not particularly limited.

In the present invention, in order to heat the object to be heated 14, heating is carried out continuously while moving the heating unit 5 sandwiching the object to be heated 14 between the electrode parts 12 and 13. It has become. Therefore, the heating unit body 5 can be continuously moved by the moving means. The moving means is not particularly limited,
From the viewpoint of the productivity of the molded product, a conveyor section (conveyor means) represented by a belt conveyor is particularly preferably used.

In this embodiment, for example, as shown in FIG. 3, a belt-conveyor-like conveyor which is stretched in a substantially flat plate shape by at least two support shafts 15a and 15b and is rotatable like an endless track. Part 6 is used. The direction in which the conveyor unit 6 is stretched is not particularly limited, but in the present embodiment,
A plurality of (36 in FIG. 3) heating unit body parts 5 are spread over the entire outer peripheral surface of the conveyor part 6 and are stretched along the horizontal direction.
... is attached. When the conveyor unit 6 having such a configuration is used, the heating unit body 5 can be efficiently moved to the heating zone, so that the production efficiency of the fired product is further improved. Further, since it can be continuously rotated like an endless track, it is possible to reduce the installation space of the heating device.

In the following description, the layout of the conveyor section 6 stretched over as shown in FIG. 3 is an endless flat plate layout. Further, the layout of the arrangement of the conveyor unit 6 is not limited to the above-mentioned endless flat plate, and may be rotatably stretched around a plurality of support shafts.

A more specific structure of the conveyor unit 6 is not particularly limited and can withstand a temperature rise of the heating unit body 5 due to heating, and the heating unit body 5 is attached to the entire outer peripheral surface. It suffices that the heating unit body 5 can be smoothly conveyed in this state.

The heating method carried out by using the heating device according to the present invention includes at least the following three steps. That is, the heating preparation step of sandwiching the object to be heated 14 between the electrode parts 11 and 12 to form the unit unit 5 and the heating unit body 5 formed in the heating preparation step by applying a high frequency to cause dielectric heating. It is a process of removing the heating target 14 from the heating unit 5 after the process and heating. Therefore, also in the heating device having the layout shown in FIG. 3, a region where each of these steps is performed, that is, a process zone is preset.

In the endless flat plate-like conveyor section 6 as shown in FIG. 3, the heating preparation zone A is set in the upper region of the end on the support shaft 15a side (the end on the right side in FIG. 3). The heating zone B is set in a region on the downstream side in the rotation direction of the conveyor unit 6 (direction of the arrow in the figure), which is a large part of the outer periphery of the conveyor unit 6 sandwiching the end on the support shaft 15b side, Further, on the downstream side thereof, an object removal zone C is set in a region connected to the heating preparation zone A below the end on the support shaft 15a side.

In the present invention, in the heating zone B,
A high-frequency heating means for applying a high-frequency wave to cause dielectric heating is provided, and this high-frequency heating means can be expressed as at least a power supply section 2 and a power supply section (power supply means) 3.

Although the specific structure of the power feeding section 3 is not particularly limited, it is formed of a conductive material such as metal, as shown in FIG. 4B. The cross section is "U" shape (or almost U shape)
And a shape having a concave portion 31 in the center can be given. In other words, the rectangular plate-like member is bent along two fold lines parallel to the longitudinal direction so as to form the side surface portions 32, 32 facing each other and the upper surface portion 33 connecting the side surface portions 32, 32 to each other. An example is a shape formed in a V-shaped cross section.

On the other hand, the more specific structure of the power receiving section 4 corresponding to this is not particularly limited as long as high frequency power can be received in a non-contact manner with the power feeding section 3. For example, as shown in FIGS. 4 (a), (b), and (c), there may be mentioned a flat plate-like structure in which the side surface portions 32, 32 facing each other are sandwiched in a non-contact manner. The power receiving unit 4 may be made of a conductive material such as metal, like the power feeding unit 3.

Here, since the power feeding portion 3 is provided along the entire heating zone B along the shape in which the conveyor portion 6 is stretched, a rail having a U-shaped cross section. It can also be said that they are arranged in a shape configuration. The power receiving unit 4 is connected to the electrode unit 12 in a shape corresponding to the rail-shaped power feeding unit 3.

As described above, in the present embodiment, the power supply / reception unit 11 is configured by the combination of the rail-shaped power supply unit 3 and the flat plate-shaped power reception unit 4 which form a U-shaped cross section. . Therefore, when the heating unit body 5 enters the heating zone B by the conveyance of the conveyor unit 6, the flat power receiving unit 4 is not placed in the recess 31 of the rail-shaped power feeding unit 3 (between the facing side surfaces 32 and 32). It is caught by contact. Then, the power receiving unit 4 moves along the rail-shaped power feeding unit 3 along with the conveyance of the conveyor unit 6 (the direction of the arrow in FIGS. 4A and 4C).

At this time, in the concave portion 31 of the power feeding portion 3, a capacitor is formed by the power receiving portion 4, the side surface portions 32 and 32 sandwiching the power receiving portion 4, and the space between them. As a result, power supply from the power supply unit 2 to the heating unit 1 is started,
The heating / drying process is started by dielectric heating. After that, until the heating unit body 5 forming the heating unit 1 leaves the heating zone B, that is, from the concave portion 31 of the power feeding unit 3 to the power receiving unit 4.
The heating / drying process can be smoothly and surely continued until it comes off.

In other words, in the present invention, the power receiving section 4 has a flat plate shape, and the power feeding section 3 has a facing surface that faces the power receiving section 4, and the flat plate power receiving section 4 is provided as described above. It is preferable that a high-frequency alternating current is applied in a non-contact manner by facing the facing surface. It is more preferable that side surfaces 32, 32 facing each other are provided as the facing surfaces. Therefore, the power feeding section 3 may not have a U-shaped cross section, but may have a flat plate shape having only one side surface section 32.

The specific configurations of the power feeding unit 3 and the power receiving unit 4 are not limited to those described above.
That is, the shapes of the power feeding unit 3 and the power receiving unit 4 are appropriately changed according to the type of the heating target 14, the shape thereof, or the like, or the method of causing dielectric heating is changed by including other members. Good. For example, an action of a capacitor may be further improved by disposing an insulator between the power receiving section 4 and the side surface sections 32.

Therefore, the non-contact power supply in the present invention means that the power supply section 3 and the power receiving section 4 (electrode section 12) are not in direct contact with each other. As described above, if the power supply / reception unit 11 is configured to supply power in a non-contact manner, the electrodes do not come into direct contact with each other, so that it is possible to avoid the occurrence of sparks or the like in the heating zone B.

In the heating device used in this embodiment,
As shown in FIG. 1, a plurality of heating units 5 ... Are attached to the entire surface on the outer peripheral surface of the conveyor section 6 (see FIG. 3) arranged in an endless flat plate layout. Further, at a position corresponding to the heating zone B on the conveyor unit 6, a rail-shaped power feeding unit 3 (see FIG. 4) that constitutes a part of the heating unit body 5 is arranged. Then, due to the rotational movement of the conveyor section 6, the heating unit body 5 moves in the direction of the arrow in the figure (counterclockwise direction in FIG. 1), and heating is started when it reaches the heating zone B.

Here, in this embodiment, as shown in FIG. 1, it is assumed that a high frequency can be applied to 25 heating units 5 in the entire heating zone B. Therefore, the total length of the power feeding portion 3 provided in the heating zone B is 25 heating unit bodies 5.
Furthermore, it is assumed that the high frequency output of the power supply unit 2 at this time is set to about 20 kW in the entire heating zone B. Therefore, the output of the high frequency applied to one heating unit 5 is about 0.8 kW.

In the present invention, the high frequency heating means provided in the heating zone B is divided into a plurality of parts. That is, the heating zone B is provided with a plurality of high-frequency heating means including the power source section 2 and the power feeding section 3, and these plurality of high-frequency heating means collectively form one heating zone B.

In the configuration shown in FIG. 1, the heating zone (heating area) B is divided into two sub-zones (lower areas) b1 and b2, and the power supply sections 2a and 2b and the power feeding section are provided in each of the sub-zones b1 and b2. 3a and 3b are provided. Specifically, the upstream side in the rotational movement direction of the conveyor section 6 is the subzone b1, and the downstream side is the subzone b2.

As described above, in the case of a large-scale heating device for performing a heating process on 25 heating units 5,
The output of the high frequency generator 21 is, for example, about 2 as described above.
It is a large value of 0 kW. Furthermore, since the conveyor section 6 has an endless flat plate layout, the heating zone B
Is arranged so as to wrap around the end of the conveyor section 6 on the support shaft 15b side, and therefore becomes longer. Therefore, when a high frequency wave is applied, the high frequency wave is likely to be localized at a specific position, and thus a phenomenon in which large high frequency energy is concentrated at a specific position is likely to occur.

Moreover, the heating target object 14 contains water, and if the amount of water changes significantly with heating, the electrical characteristics of the heating target object 14 will also change significantly. Therefore, even if the electric characteristics of the heating target 14 are changed, the high frequency is likely to be localized, and as a result, the high frequency energy concentration phenomenon is more likely to occur.

When the above-mentioned phenomenon of high-frequency energy concentration occurs, excessive heating (overheating) is likely to occur in some of the heating units 5, and the heating process is not properly performed, or the heating target 14 is heated. There are problems such as burning. Furthermore, since the output of the high frequency generator 21 is originally large, the concentration of high frequency energy may cause not only overheating but also spark generation and even dielectric breakdown.

In the conventional technique, since the scale of the heating device was small (see FIG. 15), there was no problem even if the high frequency energy was concentrated, but if the heating device was enlarged in order to improve the production efficiency. However, the above problems occur.

On the other hand, in the present invention, the heating zone B
Is divided into, for example, two subzones b1 and b2, and the high frequency output in each subzone b1 and b2 is also divided from the overall output. Therefore, it is possible to effectively suppress or avoid the occurrence of the high frequency energy concentration phenomenon as described above, and it is possible to prevent the occurrence of phenomena such as overheating and dielectric breakdown.

In the example shown in FIG. 1, the heating zone B is a subzone b having a uniform length and a uniform output.
It is divided into 1 and b2. Specifically, heating zone B
Since the entire length is 25 heating unit bodies 5, each of the sub-zones b1 and sub-zones b2 has a length of 12.5 heating unit bodies 5. That is, the power feeding unit 3a provided in the sub zone b1 is also the power feeding unit 3b provided in the sub zone b2.
Also have the same length, and both can apply a high frequency to 12.5 heating units 5.

Since the high frequency output of the entire heating zone B is about 20 kW, the high frequency output of the power supply units 2a and 2b provided in the sub-zones b1 and b2 is set to about 10 kW. Therefore, heating zone B
The overall output does not change at about 20 kW, and the output of the high frequency applied to one heating unit body 5 does not change at about 0.8 kW (see FIG. 16).

In this embodiment, if the heating zone B is divided into two, the division pattern is not particularly limited. That is, the division of the heating zone B can be appropriately changed according to the method of applying the high frequency to the heating unit 1, the layout of the conveyor unit 6, the type of the heating target 14, the properties and characteristics thereof, and the like.

For example, as shown in FIG. 5, the heating zone B is divided into two subzones b1 and b2 as in the example shown in FIG. 1, but the length of the subzone b1 (the length of the feeding portion 3a is ) Is equal to the length of nine heating units 5, the output of the power supply unit 2a is about 7.2 kW, and the length of the subzone b2 (the length of the power feeding unit 3b) is 1
The length of the power supply section 2b is about 12.8kW.
May be Even in this case, the output of the entire heating zone B remains about 20 kW, and the output for one heating unit 5 remains about 0.8 kW.

On the contrary, as shown in FIG. 6, the subzone b1
The length of the heating unit body 16 is set to 16 and the power supply unit 2
The output of a may be about 12.8 kW, the length of the subzone b2 may be the length of nine heating units 5, and the output of the power supply unit 2b may be about 7.2 kW. Even in this case, the output of the entire heating zone B remains about 20 kW, and the output for one heating unit 5 remains about 0.8 kW.

Next, an example of the heating method according to the present invention will be described. First, the heating target object 14 is sandwiched between the electrode portions 11 and 12 to form the heating unit body 5. As a result, the heating unit 1 is formed by the heating unit body 5 and the power feeding unit 3 (see FIG. 2), so that the heating preparation is completed (heating preparation step). This heating preparation step is performed in the heating preparation zone A in FIG.

Next, by the rotational movement of the conveyor section 6,
The heating unit 5 is conveyed from the heating preparation zone A to the heating zone B. In the heating zone B, high frequency is applied to the heating unit body 5 from the power supply units 2a and 2b via the power supply / reception unit 11 in a non-contact manner, so that the dielectric heating is started. (Heating process).
Since this heating zone B is divided into sub-zones b1 and b2 as shown in FIG. 1, for example, the phenomenon of high-frequency energy concentration does not occur, as described above. Therefore, the heating target 14 can be heated efficiently and reliably.

After that, when the heating unit body 5 leaves the heating zone B, the heating process is completed. Therefore, in the object removing zone C, the heating object 14 is removed from the electrode portions 12 and 13 forming the heating unit body 5 (object removing step). This completes the series of manufacturing processes.

The application of the present invention is to use a high-frequency alternating current to cause dielectric heating of the object to be heated 14, and particularly to efficiently heat a plurality of objects to be heated 14 continuously. There is no particular limitation as long as it is used.

Specific examples of applications of the heat treatment include heat cooking of food, heat sterilization, heat baking of baked confectionery, thawing of frozen foods / foodstuffs, heat aging of foods / foodstuffs and curing (meat). Food processing applications such as thick food and food defrosting); wood drying applications such as wood drying, heat bonding for manufacturing wood products, heat pressing, etc .; resin melting, resin film fusion bonding, resin Examples thereof include resin processing applications such as heat and pressure molding.

Depending on the purpose of the heat treatment, the object to be heated 14 may contain water. Therefore, by applying a high-frequency alternating current to the heating unit 5, dielectric heating occurs and the object to be heated is An electric current also flows through the object 14 directly, and the heating by heating the object 14 to be heated is performed. Therefore, the term "dielectric heating" as used in the present invention includes not only the narrowly defined dielectric heating but also the above-mentioned electric heating performed at the same time.

As described above, according to the present invention, the heating zone to which a high frequency is applied is divided into a plurality of subzones, and each subzone is provided with a power source section and a power feeding section. Therefore, it is possible to suppress or avoid the occurrence of the phenomenon of high frequency energy concentration in the heating zone. As a result, it is possible to effectively prevent the occurrence of overheating, insulation breakdown, etc., and it is possible to realize efficient and reliable heating of the object to be heated.

[Second Embodiment] Another embodiment of the present invention will be described with reference to FIGS. 7 and 8.
It is as follows. The present invention is not limited to this. Further, for convenience of description, members having the same functions as those used in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the first embodiment, the heating zone B is set to 2
Although an example in which the heating zone B is divided is described, the present embodiment will be described by taking an example in which the heating zone B is divided into three or more.

Specifically, for example, as shown in FIG. 7, the heating zone B is divided into three parts from the upstream side to sub-zones b1, b2, and b3 with the moving direction of the conveyor section 6 as a reference. Each subzone has a power supply 2a
2b and 2c and power feeding portions 3a, 3b and 3c are provided, respectively.

In the division pattern shown in FIG. 7, the lengths of the sub-zones b1 and b3 (the lengths of the power feeding portions 3a and 3c) are set to the length of five heating units 5, and the length of the sub-zone b2 is set. (The length of the power feeding part 3b) is set to the heating unit 5
It has a length of 15 pieces.

In this division pattern, the length of the entire heating zone B does not change for 25 heating units 5, but the length of the subzone b2 is substantially three times the length of the subzones b1 and b3. ing. Further, the high frequency output of the entire heating zone B is set to, for example, about 20 kW as in the first embodiment, and about 0.8 kW per heating unit body 5.
Assuming that the high frequency is applied, the high frequency output in the power supply section 2a in the sub zone b1 and the power supply section 2c in the sub zone b3 are both about 4 kW, and the high frequency output in the power supply section 2b in the sub zone b2 is 12 kW.

Alternatively, as shown in FIG. 8, with reference to the moving direction of the conveyor section 6, from the upstream side to the subzone b
The heating zone B is divided into five so as to be 1 · b2 · b3 · b4 · b5. Each subzone has a power supply unit 2a, 2b
・ 2c ・ 2d ・ 2e and power supply parts 3a ・ 3b ・ 3c ・ 3d
・ 3e is provided respectively.

In the division pattern shown in FIG. 8, since the heating zone B is divided into equal lengths, each subzone b1
The lengths of b5 are the lengths of five heating units 5. Even in this division pattern, if the high frequency output of the entire heating zone B is set to about 20 kW and a high frequency of about 0.8 kW is applied to one heating unit body 5, the power supply unit 2a
The output of ~ 2e is also about 4 kW.

As described above, in the present invention, regarding the division pattern of the heating zone B, that is, the length of each sub-zone (the length of the power feeding portions 3a to 3e) and the output of the high frequency power from the power source portions 2a to 2e, There is no particular limitation as long as the concentration of high frequency energy can be suppressed or avoided.

Therefore, as a method of dividing the heating zone B into a plurality of sub-zones, for example, (1) simply like the first embodiment, the output zone and the length are simply divided into multiple sections. 2) Even if the output and length of each subzone are different, divide so that the output of high frequency applied to one heating unit 5 is the same. (3) The length of each subzone is equal. However, the high frequency output applied to one heating unit 5 is divided so that the output is different,
A method such as can be used.

As described above, in this embodiment, the heating zone is divided into three or more subzones. In this case, the heat treatment may be performed at the same level in each subzone, or the heat treatment may be performed at different levels. Therefore, in the present embodiment, not only is it possible to more reliably suppress or avoid the concentration of high-frequency energy, but it is also possible to add different levels of heat in different time zones in different sub-zones, depending on the properties of the heating target. Become. As a result, more effective and high-quality heat treatment can be performed.

[Third Embodiment] FIG. 9 and FIG. 10 and FIG. 17 of still another embodiment of the present invention.
The following is a description with reference to FIG. The present invention is not limited to this. Further, for convenience of description, members having the same functions as those used in the first or second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the first or second embodiment, even when the heating zone B is divided into a plurality of sections, the heating zone B as a whole is subjected to the dielectric heating by the high frequency heating means. A part of the zone B includes a high frequency application suspension zone for suspending high frequency application.

Specifically, as shown in FIG. 9, in the present embodiment, the basic division pattern of the heating zone B is the five division pattern described in the second embodiment. The power source portion 2b and the power feeding portion 3b are not provided in the portion corresponding to the sub zone b2, and the high frequency application suspension zone b2-2 is formed.

In this division pattern, since the high frequency is not applied in the high frequency application resting zone b2-2, the heating zone B is substantially divided into four from the viewpoint of dividing the output of the high frequency. .

That is, like the five-division pattern (see FIG. 8) in the first embodiment, the subzone b1.
The lengths of b2-2, b3, b4, and b5 are all five heating units 5. Here, assuming that the high frequency output in the entire heating zone B is about 20 kW, the power supply units 2a and 2c
When the outputs of the respective high frequencies in 2d and 2e are equally divided, the high frequency becomes approximately 5 kW, and the high frequency applied to one heating unit body 5 becomes approximately 1 kW. In this case, it becomes larger than about 0.8 kW in the first or second embodiment.

Alternatively, if the high frequency applied to one heating unit 5 is maintained at about 0.8 kW, the power supply units 2a
If the outputs of the respective high frequencies in c, 2d, and 2e are equally divided, it becomes about 4 kW. In this case, the high frequency output in the entire thermal zone B is about 16 kW.

Furthermore, each subzone b1, b3 to b5
As described in the second embodiment, the output of the high frequency in the above is not evenly divided, and according to the property of the heating target object 14,
The high frequency output may be different.

As described above, in the present invention, the heating zone B may be provided with a zone to which a high frequency is not applied. In particular, by providing a high-frequency application suspension zone as appropriate according to the properties of the object to be heated 14, it becomes possible to carry out a more appropriate heat treatment.

Further, in the present embodiment, as shown in FIG. 10, one heating zone B is divided into sub-zones b1 and b.
It may be divided into two, and a high frequency application pause zone d may be provided between each subzone b1 and b2.

At this time, the power supply units 2a and 2b and the power supply units 3a and 3b are provided in the subzones b1 and b2, respectively.
Is provided. Further, the subzone b1 has a length of nine heating units 5, and the subzone b2 has a length of eleven heating units 5. Further, the high-frequency application suspension zone d is set between the sub-zones b1 and b2 in the vicinity of the end of the support shaft 15b in the conveyor section 6, and its length is equivalent to five heating units 5. There is.

The subzones b1 and b2 at this time are
In regard to the output of the high frequency in, the whole may be divided into about 20 kW and then equally divided, or the high frequency applied to one heating unit body 5 may be divided so as to be maintained at about 0.8 kW. Alternatively, the outputs of the high frequencies of the sub-zones b1 and b2 may be different depending on the property of the heating target 14.

When the layout of the conveyor section 6 is an endless flat plate shape (see FIG. 3), the conveyor section 6 is curved in an arc shape in the vicinity of the support shafts 15a and 15b over which the conveyor section 6 is stretched. Therefore, the power feeding unit 3 is also curved and arranged accordingly. Here, in such a curved portion (referred to as an R portion), high-frequency localization is likely to occur, and when the power feeding portion 3 is formed and arranged in a shape according to the R portion, the configurations of the heating devices are compared. It will be complicated.

On the other hand, in this embodiment, since the R portion is the high frequency application resting zone, the high frequency is not applied to the portion where the high frequency is likely to be localized. Therefore, the phenomenon of high frequency energy concentration can be avoided even more reliably. Further, since no heating means need be provided in the high-frequency application suspension zone d, the power feeding unit 3 is
The heating device can be designed so that it is not provided at the site. As a result, the configuration of the heating device can be further simplified.

In addition, although not shown, in the present embodiment,
For example, in each of the multi-division patterns described in the first or second embodiment, the high frequency application may be stopped in at least one subzone. That is, in the high frequency application suspension zone described above, a high frequency heating means including a power supply section and a power feeding section may be provided, but in each subzone, the operation of the high frequency heating means may be stopped as appropriate. .

Further, in the present embodiment, by providing the high frequency application pause zone at at least one of the first stage and the last stage in the heating process, it is possible to carry out a more appropriate heat treatment.

Depending on the type of the object to be heated 14, the electrical characteristics (high frequency characteristics) change drastically in the first stage of the heating process, so it may not be desirable to apply a high frequency output. For example, as described in the first embodiment, when the object to be heated 14 contains water, the water content is high in the initial stage of the heating process, so that strong heating is performed by dielectric heating in this initial stage. If it is carried out, there is a possibility that the object to be heated 14 may undergo a sudden change in properties.
As a result, there arises a problem that the quality of the heated object 14 after drying is deteriorated.

Therefore, as shown in FIG. 17, the power supply section 2a and the power feeding section 3a are not provided in the portion corresponding to the sub zone b1, and the high frequency application suspension zone b1-1 is set.
For example, a heating means capable of gentle heating such as an external heating device is separately provided. As a result, even if the object to be heated 14 contains a large amount of water, it is possible to perform appropriate heating.

On the other hand, in the final stage of the heating step, since heating and drying are almost completed, excessive heating may occur when a large amount of heat is applied, and the physical properties such as burning of the object to be heated 14 may be deteriorated. is there. Moreover, such burning of the heating target 14 not only deteriorates the quality,
Depending on the situation, the feed electrode 12 and the ground electrode 1 of the heating unit body 5
3 may occur (see FIG. 2), sparks may be generated, and stable heating may be difficult.

Therefore, as shown in FIG. 18, the power supply section 2e and the power feeding section 3e are not provided in the portion corresponding to the sub zone b5, but the high frequency application suspension zone b1-1 is provided, and the gentle heating can be performed here as well. A heating means is separately provided. As a result, in the finishing stage of heating and drying, the heating target 14
It is possible to gently heat the. Therefore, it is possible to prevent excessive heating, and as a result, it is possible to avoid the burning of the object to be heated 14 and the generation of sparks due to the burning, and to perform a more appropriate heat treatment.

Here, the method of setting the high frequency application pause zone in the present embodiment is not limited to any of the examples described above. That is, subthorn b
3 or the subzone b4 may be a high frequency application stop zone, or the initial stage subzone b1 and the final stage subzone b5 may be set as the high frequency application stop zone, and the high frequency may be applied only to the subzones b2, b3, b4. Good.
That is, it is needless to say that the heating zone B in the present embodiment may be designed so that a preferable heat treatment can be carried out according to the type of the heating object 14, and is not limited to the above-mentioned examples.

As described above, in the present embodiment, since the heating zone includes the high frequency application pause zone, it is possible to appropriately omit the heat treatment depending on the property of the object to be heated. Further, in the present embodiment, since the high frequency application resting zone is included, it is possible to design the heating device so that the high frequency is not applied to the site where the high frequency is easily localized. Therefore, the occurrence of the high frequency energy concentration phenomenon can be more reliably avoided.

Further, if a high frequency application pause zone is set in a portion where the power feeding portion is relatively difficult to arrange, it is not necessary to provide a high frequency heating means in this portion. As a result, the structure of the heating device can be further simplified. In addition, by providing the high frequency application pause zone in at least one of the initial stage and the final stage of the heating process, it becomes possible to perform heating according to the object to be heated, and it is possible to carry out a more appropriate heat treatment.

[Fourth Embodiment] The following description will discuss still another embodiment of the present invention with reference to FIGS. 11 to 14. The present invention is not limited to this. Further, for convenience of description, members having the same functions as those used in the first to third embodiments are designated by the same reference numerals, and the description thereof will be omitted.

In each of the first to third embodiments, the case where the conveyor section 6 is laid out in the shape of an endless flat plate has been taken as an example, but in the present embodiment, another layout of the conveyor section 6 will be described. To do.

For example, as the layout of the conveyor section 6, as shown in FIGS. 11 (a) and 11 (b), a layout of a ferris wheel arranged in an annular shape and vertically erected and rotated. Can be mentioned. When viewed from above, as shown in FIG. 11A, the heating unit body 5 is conveyed so as to rotate in the arrow direction from top to bottom (arrow direction). When viewed from the side, as shown in FIG. 11B, the heating unit body 5 is attached to the entire outer peripheral surface of the cylindrical conveyor unit 6 and conveyed so as to rotate in the arrow direction.

As shown in FIG. 11A, even in this ferris wheel layout, as in the endless flat plate layout,
Although the heating preparation zone A, the heating zone B, and the object removal zone C are set, the heating preparation zone A and the object removal zone C may be set downward due to the layout. preferable. As a result, the object to be heated 14 can be smoothly clamped or removed from the electrodes 12 and 13.

Alternatively, as shown in FIGS. 12 (a) and 12 (b), there may be mentioned a horizontal disk-shaped layout which is arranged and rotated in an annular shape with respect to a horizontal plane. When viewed from above, as shown in FIG. 12A, the heating units 5 are arranged radially and are conveyed so as to rotate in the arrow direction. When viewed from the side, as shown in FIG. 12 (b), the heating units 5 are radially arranged and attached to the upper surface of the annular conveyor unit 6, and are rotated in the arrow direction. Be transported as if

As shown in FIG. 12B, in this horizontal disk-shaped layout, the heating preparation zone A, the heating zone B, and the object removal zone C can be set at any part of the conveyor section 6. Since they are the same, the setting position of each process zone is not particularly limited.

Further, as shown in FIGS. 13 (a) and 13 (b), there is a linear layout in which the reciprocating movement moves on a horizontal plane. When viewed from above, FIG.
As shown in (a), for example, 13 heating unit bodies 5 are arranged in parallel along the longitudinal direction, and these reciprocate in the arrow direction. When viewed from the side,
As shown in FIG. 13 (b), the heating unit body 5 is attached to the upper surface of the conveyor section 6 arranged on a horizontal plane,
It is conveyed so as to rotate in the arrow direction.

As shown in FIG. 13B, in this linear layout, the heating zone B is set at the center, and the heating preparation zone A and the object removal zone C are
It is preferable that both ends of the conveyor unit 6 are set to be used in common.

Alternatively, as shown in FIGS. 14 (a) and 14 (b), two linear arrangements 51 in which a plurality of heating units 5 are arranged in parallel along the longitudinal direction are further arranged in parallel, and heating is performed at both ends thereof. The linear arrangement 51 in which the unit bodies 5 are successively adjacent to each other
There is a partial tact layout to move to.

When viewed from above, as shown in FIG. 14A, one linear arrangement is made up of 13 heating units 5, and each linear arrangement 51 is made up of the heating units 5. 1
They are adjacent to each other by shifting by an amount. Then, for example, at the left end in the figure of the linear arrangement 51, 51, one heating unit 5 moves upward from the lower linear arrangement 51 in the figure, and at the right end in the figure, the upper linear shape One heating unit body 5 moves downward from the arrangement 51. When viewed from the side, as shown in FIG. 14B, the heating unit body 5 is provided on the upper surface of the conveyor unit 6 and moves in the direction of the arrow, and at both ends, the heating unit body 5 is moved. Is moved adjacent to the linear arrangement 51.

As shown in FIG. 14 (a), in this partial tact type layout, the heating preparation zone A, the heating zone B, and the object removal zone C are set at any part of the conveyor section 6. Since they are the same, the setting position of each process zone is not particularly limited.

The above-mentioned respective layouts including the above-mentioned endless flat plate layout are roughly classified into a structure in which the heating unit body 5 is provided on the outer peripheral surface of the conveyor section 6 formed in an endless shape and a structure in which the heating unit body 5 is spread in a horizontal plane. The heating unit 5 may be provided on the upper surface of the conveyor unit 6 thus formed.
However, which layout or configuration is preferable depends on the property of the heating object 14 or restrictions on the place where the heating device is installed, and is not particularly limited. Further, the above layouts and configurations are merely examples, and other layouts and configurations may be used in the present invention.

As described above, in the heating device according to the present invention, the layout of the conveyer section is not limited to one type, but may be limited to the nature of the object to be heated, restrictions on the place where the heating device is installed, and the like. Accordingly, a preferable layout can be set appropriately.

[Fifth Embodiment] The following description will discuss still another embodiment of the present invention with reference to FIGS. 19 to 24. The present invention is not limited to this. Further, for convenience of description, members having the same functions as those used in the first to fourth embodiments are designated by the same reference numerals, and the description thereof will be omitted.

In the first to fourth embodiments, the specific structure of the heating zone B has been described in detail, but in the present embodiment, a more preferable structure of the power supply / reception unit will be described in detail.

Specifically, as described in the first embodiment, in the manufacturing apparatus used in the present invention, the heating section 1 includes the power feeding section 3 and the heating unit body 5 (see FIG. 2 and the like), the power feeding unit 3 has a rail shape, and the flat power receiving unit 4 included in the heating unit body 5 is combined therewith (see FIGS. 4A to 4C). In this configuration, for example, as shown in FIGS.
The plate-shaped power receiving unit 4 is sandwiched by the rail-shaped power feeding unit 3 in a non-contact manner while advancing in the direction of the arrow in the figure.

Normally, if the rail-shaped power feeding portion 3 has the same shape at the portion near the entrance to the power feeding portion 3 shown in FIGS. good. For example, the cross section may be a "U" shape (or a substantially U shape). However, if the portion near the entrance and the other portions have the same shape, power feeding from the power feeding unit 3 to the power receiving unit 4 is suddenly started, which may not be preferable depending on the type of the heating target 14. is there.

Therefore, when the shape of the power feeding portion 3 is changed and the level of power feeding is gradually increased near the entrance to each subzone in the heating zone B, the heating target 14 can be gradually heated. It will be possible. As a result, the heating target 1
The heating according to No. 4 can be performed, and a more appropriate heat treatment can be performed.

Specifically, as shown in FIGS. 20 (a) and 20 (b), the shape of a pair of flat plate-shaped side surface portions 32, 32 sandwiching the flat plate-shaped power receiving portion 4 in a non-contact manner is provided near the entrance. The power feeding unit 3 is formed so that the area thereof decreases, that is, the power feeding unit 3 has a substantially triangular shape having an oblique side that is inclined so as to rise in the traveling direction of the heating unit body 5. As a result, the overlapping area of the power receiving unit 4 and the side surface portions 32, 32 sandwiching the power receiving unit 4 gradually increases as the heating unit body 5 advances, so that the power receiving unit 4, the side surface portions 32.
2 and the capacity of the capacitor formed in the space between them also increase. As a result, it becomes possible to gradually increase the power supply level and gradually heat the heating target 14.

Alternatively, as shown in FIGS. 21A and 21B, the distance between the pair of side surface portions 32, 32 (opposing interval).
To expand toward the entrance, that is,
The rail-shaped power feeding portion 3 is formed so that the distance between the side surface portions 32, 32 becomes narrower as it goes in the traveling direction of the heating unit body 5. As a result, the space between the power receiving section 4 and the side surface sections 32, 32 sandwiching the power receiving section 4 becomes gradually narrower as the heating unit 5 advances, so that the power receiving section 4, the side surface sections 32, 32, And the capacity of the capacitor formed in the space between them also increases. as a result,
By gradually increasing the power supply level, the heating target 14 can be gradually heated.

Similarly, if the rail-shaped power feeding portion 3 has the same shape at the portion near the outlet of the power feeding portion 3 shown in FIGS. good.
However, if the portion near the outlet and the other portion have the same shape, the power feeding from the power feeding unit 3 to the power receiving unit 4 suddenly ends, which may not be preferable depending on the type of the heating target 14. Particularly, when a large amount of heat is applied in the finishing stage of the heating process, charring due to overheating occurs and the physical properties of the object to be heated 14 deteriorate. Further, there is a possibility that sparks may be generated due to burning.

Therefore, when the shape of the power feeding portion 3 is changed in the vicinity of the outlet in each subzone in the heating zone B to gradually lower the power feeding level, the heating level of the heating object 14 is gradually lowered. It becomes possible. This makes it possible to gently heat the heating target 14 in the finishing stage of heating and drying. Therefore, it becomes possible to prevent excessive heating of the heating target 14. As a result, it is possible to avoid the burning of the object to be heated 14 and the generation of sparks resulting from the burning, and to perform a more appropriate heat treatment in a stable manner.

Specifically, as shown in FIGS. 23 (a) and 23 (b), the shape of the pair of side surface portions 32, 32 is gradually reduced toward the vicinity of the outlet, that is, by heating. The power feeding unit 3 is formed so as to have a substantially triangular shape having a hypotenuse inclined so as to descend toward the traveling direction of the unit body 5. As a result, the overlapping area of the power receiving section 4 and the side surface portions 32, 32 sandwiching the power receiving section 4 gradually decreases as the heating unit body 5 advances, so that the power receiving section 4,
The capacitance of the capacitors formed in the side surface portions 32, 32 and the space therebetween also decreases. As a result, it is possible to gradually lower the level of power supply and gradually reduce the heating to the heating target 14.

Alternatively, as shown in FIGS. 24A and 24B, the distance (opposing distance) between the pair of side surface portions 32, 32.
The rail-shaped power feeding portion 3 is formed so as to gradually expand toward the vicinity of the outlet, that is, to increase the distance between the side surface portions 32 and 32 in the traveling direction of the heating unit body 5. deep. As a result, the space between the power receiving section 4 and the side surface sections 32, 32 sandwiching the power receiving section 4 gradually becomes wider as the heating unit 5 advances, so that the power receiving section 4, the side surface sections 32, 32, And the capacity of the capacitor formed in the space between them also decreases. As a result, the level of power supply is gradually lowered, and the heating target 14
It becomes possible to gradually reduce the heating to.

As described above, in the present embodiment, the power receiving unit is provided along the traveling direction (movement path) of the heating unit body 5 so that the application level of the high frequency applied to the heating unit body 5 is gradually changed. 4 and the side surface portion (opposing surface) 32 of the feeding portion 3 are changed so as to change the overlapping area (opposing area), or along the traveling direction (moving path) of the heating unit body 5, The power feeding unit 3 is formed so as to change the interval (opposing interval) at which the power receiving unit 4 and the side surface portion (opposing surface) 32 of the power feeding unit 3 face each other. As a result, it is possible to avoid deterioration of the quality of the heating target 14.

As a method of changing the facing area, a method of changing the area of the side surface portion (facing surface) 32 along the traveling direction is preferably used, as described above.
As a method of changing the facing interval, as described above, a method of changing the interval between the pair of side surface portions (opposing surfaces) 32, 32 along the traveling direction is preferably used, but is not limited to these methods. is not. Further, in the above-described example, the case where the facing area and the facing interval are continuously changed has been described, but the present invention is not limited to this. That is, as long as the application level of the high frequency can be changed, the distance between the side surface portion 32, that is, the facing surface and the power receiving portion 4 may be changed in any manner, for example, stepwise.

Further, in the present embodiment, the shape of the power feeding portion 3 is changed in order to change the high frequency application level, but the present invention is not limited to this. In particular, when the facing area between the power feeding unit 3 and the power receiving unit 4 is changed, the shape of the power receiving unit 4 may be changed instead of the power feeding unit 3.

As described above, in the present embodiment, at least one of the vicinity of the entrance to the heating zone and the vicinity of the exit of the heating zone, the rail-shaped power feeding unit for receiving the flat power receiving unit or the power receiving unit is moved. It is formed in a shape that changes along the path (that is, the moving path of the heating unit) so that the level of power supply can be changed.

Therefore, in particular, as in the third embodiment, the stepwise heat treatment can be performed at the beginning or the end of the heating step. Therefore, it becomes possible to adjust the heating level, and it is possible to carry out an appropriate heat treatment according to the object to be heated.

Further, by combining the shape change of the rail-shaped power feeding portion in the present embodiment with the division of the heating zone and the setting of the high frequency application pause zone in the above-mentioned first to third embodiments, any place can be set. It is possible to adjust the strength of heating. Therefore, for example, by changing the shape of the power feeding portion at the site near the entrance or exit of each subzone, it is possible to perform more appropriate heat treatment according to the type of the heating target.

[Sixth Embodiment] The following description will discuss still another embodiment of the present invention with reference to FIGS. 25 to 27. The present invention is not limited to this. Further, for convenience of explanation, members having the same functions as those used in the first to fifth embodiments are designated by the same reference numerals, and the description thereof will be omitted.

Although the configurations of the heating zone and the power supply / reception part have been described in the first to fifth embodiments, the preferred method for advancing the power reception part, that is, the heating unit to the heating zone will be described in detail in the present embodiment. Explained.

Specifically, for example, as illustrated in the first to third embodiments, the layout of the conveyor section 6 is an endless flat plate, and the support shafts 15a.
It is assumed that the conveyor section 6 is curved in an arc shape in the vicinity of 5b (see FIGS. 1 and 8 and the like). At this time, the power feeding unit 3 is also curved and arranged in accordance with the curved portion (R portion) of the conveyor unit 6. Here, when the heating unit body 5 moves, the distance of the heating unit body 5 that moves in a certain time is different between the straight portion and the R portion of the conveyor unit 6.

For example, as shown in FIG. 25 (a), the feeding portion 3 has a high-frequency applying zone (subzone b2 shown in FIG. 14) having a shape including both a straight portion and an R portion.
Etc.), the number of power receiving units 4 inserted in the power feeding unit 3 (sandwiched between the side surface portions 32, 32) constantly fluctuates. In other words, the number of heating units 5 that are dielectrically heated in the high frequency application zone constantly fluctuates. Figure 25
In the example shown in (a), the number of power receiving units 4 (that is, the heating units 5) inserted into the power feeding unit 3 varies from 1.7 to 2.3, and the average number of inserted units is 2. On the other hand, the variation rate is ± 15%, that is, 1/4 sheet. In this case, if the output of the power supply unit 2 is 5 kW, the output for one heating unit 5 varies from 2.17 kW to 2.94 kW.

As described above, unless the number of the flat plate-shaped power receiving portions 4 inserted in the power feeding portion 3, that is, the heating unit bodies 5, is constant, high frequency tuning becomes unstable. Therefore, FIG.
As shown in (b), a high anode current value and a low anode current value occur periodically. That is, in the anode current value, the timing in which the tuning is matched and the timing in which the tuning is not matched are alternately and continuously appearing, and as a result, a state in which the anode current value is high and a state in which the anode current value is low are alternately generated. Become. In the example shown in FIG. 25 (a), as shown in FIG. 25 (b), the anode current value fluctuates from a minimum of 0.3A to a maximum of 0.7A, and when viewed from an average value of 0.5A, it greatly fluctuates. You are doing it.

In particular, the first stage (initial stage) of the heating process
In the above, since the water content of the heating target 14 is relatively high, the state change is most likely to occur depending on its type, and the water content of the heating target 14 is the lowest at the final stage of the heating process, and it is easy to burn. Therefore, the tuning of the high frequency is more likely to be unstable, and the fluctuation of the anode current value is likely to be the most severe. Therefore, if the number of the flat plate-shaped power receiving units 4 that is inserted in the power feeding unit 3, that is, the heating unit 5 is not constant at the initial stage or the final stage of the heating process, the heating efficiency will decrease at a timing that is out of synchronization. It becomes easier and sparks may occur.

Further, the output of the power supply unit 2 needs to be adjusted to the highest value (peak value) of the anode current value. Figure 25 (a)
In the example shown in (b), the output of the power supply unit 2 is 5 kW, and only an anode current value of 0.5 A on average can be applied. Therefore, it becomes necessary to use the power supply unit 2 having an excessive output, and the cost of heat treatment increases. Further, in order to control the tuning of the high frequency to be constant, it is necessary to adjust the capacitance and the inductance at a very high speed.

Of course, depending on the type of the object to be heated 14, the problem that the tuning of the high frequency becomes unstable may not have a great influence.
In applications where the water contained in 4 is evaporated and dried, high frequency tuning tends to be unstable.

Therefore, as shown in FIG.
Similar to the example shown in FIG. 5 (a), if the high frequency applying zone has a shape including both the straight portion and the R portion, the length of the high frequency applying zone is extended.

Specifically, as shown in FIG. 26 (a),
Seen from the traveling direction of the heating unit body 5, the rail-shaped power feeding portion 3
Is extended from the part before and after the start of the bending of the R part to the front position where the bending ends. As a result, the number of power receiving units 4 inserted into the power feeding unit 3 is changed from 3.4 to 4.0.
The variation in the number of heating unit bodies 5 being heated is ± 0.25
The number of fluctuations of the heating unit 5 itself does not change, but the average insertion number is 3.7, while the fluctuation rate is ± 8%, which is clearly shown in FIG. The fluctuation rate is lower than that of the example shown in.

Further, the fluctuation of the output for one heating unit body 5 is also 1.25 kW to 1.47 kW, as shown in FIG.
It is lower than the example shown in (a). Further, FIG. 26 (b)
As shown in (4), although the anode current value fluctuates, the fluctuation of the anode current value is suppressed from a minimum of 0.5 A to a maximum of 0.7 A, approaching around 0.6 A. That is, in this example, the output of the power supply unit 2 is 5 kW, which is the same as that in the example shown in FIG. 25A, while an average anode current value of 0.6 A can be applied. Therefore, it can be seen that the energy efficiency is improved.

As described above, in the present invention, when the high frequency application zone includes the straight portion and the R portion, it is preferable to extend the length. As a result, it is possible to reduce the variation rate of the number of heating units 5 that are heated in one subzone, the variation of high frequency tuning is also reduced, and the anode current value can be relatively stabilized. Therefore, the energy efficiency of dielectric heating due to the application of high frequency is improved, and the risk of spark generation can be reduced.

Further, as shown in FIG. 27 (a), the high frequency application zone may be composed of only a straight line portion. In this case, since the R portion is not included, the number of power receiving units 4 inserted into the power feeding unit 3 is approximately constant at three, and the average number of inserted units is three, and the number of heating unit bodies 5 being heated fluctuates. Is approximately ± 0
It becomes an individual. Furthermore, the fluctuation of the output for one heating unit 5 is also constant at 1.65 kW, and as shown in FIG. 27 (b), the fluctuation of the anode current value is suppressed from a minimum of 0.6 A to a maximum of 0.7 A. It is approaching around 0.65A. That is, in this example, the output of the power supply unit 2 is as shown in FIG.
(A) -Although it is 5 kW as in the example shown in Fig. 26 (a), an average anode current value of 0.65 A can be applied. Therefore, it can be seen that the high frequency tuning is very stable and the energy efficiency is further improved.

As described above, when designing the heating zone B according to the type of the object to be heated 14, for example, as described in the third embodiment, the R portion is set as the high frequency application pause zone and the high frequency is applied only to the linear portion. With the configuration (see FIG. 10) that applies a voltage, it is possible to stabilize the tuning of the high frequency and to achieve an increase in energy efficiency and the avoidance of sparks.

Here, the heating zone B needs to be designed so that preferable heating can be performed according to the type of the object to be heated 14 and the state change during heating, and in particular, the above-mentioned Embodiments 3 and 5 and the like. As described above, when a high frequency is applied in the initial stage or the final stage of the heating process, it is preferable that the high frequency application zone be designed so as to suppress the fluctuation of the anode current value.

However, in designing the heating zone B, if the type of the heating object 14 and the like are taken into consideration, the high frequency application zone cannot always be constituted by only the above-mentioned straight line portion. In addition, even if the high frequency applying zone is configured only by the straight line portion, the power receiving portion 4 to the power feeding portion 3 is formed.
The number of inserted sheets may not be constant.

Further, as shown in FIG. 27B, the anode current value is actually in the range of 0.6 A to 0.7 A even when the number of power receiving units 4 inserted into the power feeding unit 3 is constant. Is fluctuating in. This is because the state of the heating target object 14 in the heating unit body 5 newly entering the high frequency applying zone (the power feeding section 3 of the sub zone) is that the heating target object 14 in the heating unit body 5 exiting from the high frequency applying zone. This is because it is different from the state of.

Therefore, in the present embodiment, the variation rate of the heating unit body 5 heated in one high frequency application zone (subzone) is determined regardless of whether the high frequency application zone includes the R portion or only the straight portion. The length of the high frequency application zone is set based on this regulation within a predetermined range.

Specifically, in the present embodiment, if the variation rate of the heating unit body 5 to be heated is C, this variation rate C can be set by the following equation. Here, N _max is the maximum number of power receiving units 4 inserted into the power feeding unit 3, N _min is the minimum number of power receiving units 4 inserted into the power feeding unit 3, and N _ave is the power receiving unit inserted into the power feeding unit 3. This is the average number of copies for copy 4.

C = [(N _max −N _min ) / 2] / N _ave That is, the fluctuation rate C of the heating unit 5 to be heated is the maximum number and the minimum number of the power receiving units 4 inserted into the power feeding unit 3. It is calculated as a value obtained by further dividing the value of the difference of 2 by 2 by the average number of inserted sheets of the power receiving unit 4.

In the present embodiment, it is preferable to set the length of the high frequency application zone so that the variation rate C is within the range of 0 or more and less than 0.5 (0 ≦ C <0.5), and particularly, In the initial stage and the final stage of the heating process, the above fluctuation rate C
It is preferable to set the length of the high-frequency application zone so that is within the range of 0 or more and less than 0.1 (0 ≦ C <0.1).

As described above, the length of the sub-zone (high-frequency application zone) included in the heating zone for applying high frequency is designed so that the number of power receiving sections inserted into the power feeding section is as constant as possible. To do. As a result, it is possible to reduce the variation in the number of heating units that perform dielectric heating by applying a high frequency within one subzone, so that it is possible to stabilize the high frequency tuning, and the increase or decrease in the anode current value is also small. can do. As a result, not only energy efficiency can be improved, but also spark generation can be avoided.

The present invention is not limited to the above-described embodiments, but various modifications can be made within the scope of the claims, and the technical means disclosed in the different embodiments, respectively. It goes without saying that the embodiments obtained by appropriately combining the above are also included in the technical scope of the present invention.

[0179]

As described above, the continuous high-frequency heating apparatus according to the present invention includes a plurality of power supply means, and one power supply means is provided for each power supply means. By arranging a plurality of power feeding means in series, one heating region is formed.

Therefore, in the above structure, the heating area is divided into a plurality of lower areas, and the power source means and the power feeding means are provided in each of the lower areas. Occurrence can be suppressed or avoided. As a result, it is possible to effectively prevent the overheating of the object to be heated, the occurrence of dielectric breakdown, and the like, and it is possible to perform a very high-quality heat treatment.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, the power feeding means applies a high frequency alternating current to the heating unit body in a non-contact manner.

Therefore, in the above structure, since the high frequency is applied in a non-contact manner, it is not necessary to directly contact the electrodes in the heating region between the heating unit forming the heating section and the power feeding means. Therefore, in the heating region, it is possible to avoid the occurrence of sparks in the power supply / reception unit.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above structure, the power feeding means is in the form of a rail continuously arranged along the heating region in the moving path, and further, the heating is performed. The unit body is provided with a power receiving unit that receives an alternating current from the rail-shaped power feeding unit in a non-contact manner.

Therefore, in the above structure, after the heating unit enters the heating region by the moving unit, the heating unit including the power receiving unit moves along the rail-shaped power feeding unit as the moving unit moves. Become. Therefore, there is an effect that the heating / drying process can be smoothly and reliably continued until the heating unit passes through the heating region, that is, until the power receiving unit is detached from the power feeding unit.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above structure, the power receiving means is formed in a flat plate shape, and the rail-shaped power feeding means has a facing surface facing the power receiving means. In this configuration, the flat plate-shaped power receiving unit is opposed to the facing surface to apply a high-frequency alternating current in a non-contact manner.

Therefore, in the above structure, the capacitor is formed by the power receiving means, the facing surface facing the power receiving means, and the space between them. As a result, it is possible to supply power to the heating unit that moves continuously without contact, and it is possible to smoothly and reliably continue the heating / drying process.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, the rail-shaped power feeding means or power receiving means has an application level of a high frequency alternating current applied to the heating unit body through the power receiving means. So that the facing area changes along the moving path of the heating unit.

Therefore, in the above structure, since the level of power supply is changed, the heating level of the heating unit can be adjusted. As a result, by suppressing excessive heating, it becomes possible to avoid charring and sparking of the heating unit, improving the quality of the object to be heated and obtaining desired physical properties of the finished product. In particular, since the stepwise heat treatment can be performed at the first or last stage of heating, there is an effect that more appropriate heating becomes possible.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above structure, the rail-shaped power feeding means is formed so that the area of the facing surface changes along the movement path.

Therefore, in the above structure, since the area of the facing surface is changed, the capacity of the capacitor formed by the power receiving means, the facing surface, and the space therebetween also changes. As a result, the level of power supply can be changed to change the level of heating, and the quality of the object to be heated can be improved and desired physical properties of the finished product can be obtained.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, the rail-shaped power feeding means changes the application level of the high frequency alternating current applied to the heating unit body via the power receiving means. In addition, it is configured such that the facing interval changes along the moving path of the heating unit body.

Therefore, also in the above configuration, it is possible to adjust the heating level of the heating unit by changing the power supply level. As a result, by suppressing excessive heating, it becomes possible to avoid charring and sparks of the heating unit,
It is possible to improve the quality of the object to be heated and obtain desired physical properties of the finished product. In particular, since the stepwise heat treatment can be performed at the first or last stage of heating, there is an effect that more appropriate heating becomes possible.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above configuration, the length of one of the power feeding means is such that the fluctuation rate of the continuously moving heating unit heated by the entire power feeding means is high. , And is set to be less than 0.5.

Further, in the above structure, further, when the power feeding means is arranged in a region corresponding to at least one of the initial stage and the final stage of heating in the heating region, the heating unit which moves continuously. It is preferable to set the length of the power feeding means so that the variation rate of the body is less than 0.1.

Therefore, in the above structure, it is possible to reduce the variation in the number of heating units for performing dielectric heating by applying a high-frequency alternating current in one power feeding means. In particular, it is possible to reduce the variation in the number of molds for dielectric heating at the initial stage or the final stage of the heat molding in which the tuning of the high frequency tends to be unstable. Therefore, it is possible to further stabilize the high frequency tuning, and as a result, it is possible to improve not only the energy efficiency but also the occurrence of sparks.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above structure, the pair of electrode portions includes the above-mentioned power receiving means, and is composed of a feed electrode fed from the power feeding means and a ground electrode grounded. The feed electrode and the ground electrode are insulated from each other.

Therefore, in the above structure, since the combination of the feed electrode and the ground electrode is insulated from each other, a high frequency is applied from the feed electrode in a state where the heating target object is sandwiched between them and the heating unit body is formed. By doing so, there is an effect that the object to be heated can be subjected to dielectric heating.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, the heating region includes a high frequency application suspension region for temporarily suspending application of the high frequency alternating current.

Therefore, in the above structure, it is not necessary to provide a power feeding means for applying a high frequency in the high frequency application suspension area. Therefore, it becomes possible to design the heating equipment so as not to apply the high frequency to the site where the alternating current is likely to be localized, so that it is possible to more reliably suppress or avoid the occurrence of the high frequency energy concentration phenomenon. Produce an effect. In addition, by providing a high frequency application suspension region in a region where it is relatively difficult to arrange the power feeding means and the like, it is possible to further simplify the configuration of the heating device.

In the continuous high-frequency heating apparatus according to the present invention, in addition to the above structure, the high-frequency application suspension region included in the heating region corresponds to at least one of the initial stage and the final stage of heating in the heating region. This is the configuration set in the area.

Therefore, in the above structure, the high frequency application pause region is provided in at least one of the initial stage and the final stage of heating, so that heating according to the object to be heated becomes possible.
As a result, the quality of the object to be heated and the productivity of the heat treatment can be improved.

In the continuous high frequency heating apparatus according to the present invention, in addition to the above configuration, a conveyor means rotatably stretched around a plurality of support shafts is used as the moving means.

Therefore, in the above-mentioned constitution, the molding die can be efficiently moved to the heating region, so that the production efficiency of the molded product can be improved. In addition, since it can be continuously rotated like an endless track, the installation space of the heating device can be reduced, which is also effective.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an example of a schematic configuration of a heating device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a schematic configuration of the heating device shown in FIG.

3 (a) and 3 (b) are schematic diagrams showing an example of the layout of the arrangement of the conveyor section included in the heating device shown in FIG.

4 (a), (b), and (c) are explanatory views showing a configuration of a power supply / reception unit included in the heating device shown in FIG.

5 is a schematic diagram showing another example of the schematic configuration of the heating device shown in FIG.

FIG. 6 is a schematic diagram showing still another example of the schematic configuration of the heating device shown in FIG.

FIG. 7 is a schematic diagram showing an example of a schematic configuration of a heating device according to another embodiment of the present invention.

8 is a schematic diagram showing another example of the schematic configuration of the heating device shown in FIG.

FIG. 9 is a schematic diagram showing an example of a schematic configuration of a heating device according to still another embodiment of the present invention.

FIG. 10 is a schematic diagram showing another example of the schematic configuration of the heating device shown in FIG.

11A and 11B are schematic diagrams showing an example of the layout of the arrangement of the conveyor section included in the heating device according to still another embodiment of the present invention.

12A and 12B are schematic diagrams showing another example of the layout of the layout of the conveyor section included in the heating device according to still another embodiment of the present invention.

13 (a) and 13 (b) are schematic diagrams showing still another example of the layout of the arrangement of the conveyor section included in the heating device according to still another embodiment of the present invention.

14A and 14B are schematic diagrams showing still another example of the layout of the arrangement of the conveyor section included in the heating device according to still another embodiment of the present invention.

FIG. 15 is a schematic diagram showing an example of a schematic configuration of a conventional heating device.

FIG. 16 is a schematic diagram showing an example of a schematic configuration when a conventional heating device is scaled up.

FIG. 17 is a schematic diagram showing an example of a schematic configuration of a heating device according to still another embodiment of the present invention.

FIG. 18 is a schematic diagram showing another example of the schematic configuration of the heating device shown in FIG. 17.

19 (a) and (b) are schematic diagrams showing a state in which a flat power receiving unit is inserted near the entrance of the rail-shaped power feeding unit shown in FIG.

20 (a) and 20 (b) are views showing a heating device according to still another embodiment of the present invention when a flat power receiving unit is inserted near an entrance of a rail-shaped power feeding unit. It is a schematic diagram which shows.

21 (a) and 21 (b) are schematic views showing another example of a state where a flat power receiving portion is inserted near the entrance of the rail power feeding portion in the heating device shown in FIG. 20. Is.

22 (a) and (b) are schematic views showing a state in which a flat plate-shaped power receiving unit is inserted near the outlet of the rail-shaped power feeding unit shown in FIG.

23 (a) and (b) are views showing a heating device according to still another embodiment of the present invention when a flat power receiving unit is inserted near an outlet of a rail-shaped power feeding unit. It is a schematic diagram which shows.

24 (a) and (b) are schematic views showing another example of a state where a flat power receiving unit is inserted near the entrance of the rail-shaped power feeding unit in the heating device shown in FIG. 23. Is.

FIG. 25 (a) is a schematic diagram showing a variation in the number of power receiving units inserted into a rail-shaped power feeding unit including an R portion in a heating device according to still another embodiment of the present invention. , (B) are graphs showing changes in the anode current value with changes in the number of inserted power receiving units.

FIG. 26 (a) is a schematic diagram showing a variation in the number of power receiving sections inserted in a rail-shaped power feeding section including an R part in a heating device according to yet another embodiment of the present invention. , (B) are graphs showing changes in the anode current value with changes in the number of inserted power receiving units.

FIG. 27 (a) is a schematic diagram showing a variation in the number of power receiving units inserted into a rail-shaped power feeding unit made of a directly manufactured portion in a heating device according to yet another embodiment of the present invention. Yes, (b) is a graph showing the variation of the anode current value with the variation of the number of inserted power receiving units.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Heating part 2 Power supply part (power supply means) 3 Power supply part (power supply means / rail-shaped means) 4 Power receiving part (power receiving means) 5 Heating unit 6 Conveyor part (moving means / conveyor means) 12 Electrode part (supply electrode) 13 Electrode part (ground electrode) 14 Object to be heated 32 Side part (opposing surface) B Heating zone (heating area) b1, b2, b3, b4, b5 Subzone (lower area) b2-2, d, b1-1, b5- 1 High frequency application pause zone (high frequency application pause area)

Continued front page    (72) Inventor Taizo Karasawa             1-26-6 Yamatedai, Ibaraki City, Osaka Prefecture (72) Inventor Toshitaka Haruta             1-67-1-405 Minamikusu, Hirakata-shi, Osaka (72) Inventor Yoshio Akasaka             6-3-12 Kamishio, Tennoji-ku, Osaka City, Osaka Prefecture               Yamamoto Vinita Co., Ltd. (72) Inventor Masato Yanagiya             6-3-12 Kamishio, Tennoji-ku, Osaka City, Osaka Prefecture               Yamamoto Vinita Co., Ltd. (72) Inventor Tsuneo Nagata             6-3-12 Kamishio, Tennoji-ku, Osaka City, Osaka Prefecture               Yamamoto Vinita Co., Ltd. (72) Inventor Taiji Yamamoto             6-3-12 Kamishio, Tennoji-ku, Osaka City, Osaka Prefecture               Yamamoto Vinita Co., Ltd. F-term (reference) 3K090 AA01 AA02 AA13 AB01 AB09                       BA05 EA03                 4F203 AK10 DA14 DB01 DC14 DL01                       DM16 DM23 DN02

Claims (13)

[Claims] 1. A heating unit body in which an object to be heated is disposed between at least a pair of electrode parts, a plurality of moving means for continuously moving the heating unit body along a moving path, and the moving unit. A continuous high-frequency heating device provided with a power supply unit provided along a path, for inductively heating an object to be heated by continuously applying a high-frequency alternating current from the power supply unit to a moving heating unit. In addition, a plurality of the above-mentioned power supply means are included, and one power supply means is provided for each power supply means. A continuous high-frequency heating device characterized by forming a region. 2. The continuous high frequency heating apparatus according to claim 1, wherein the power feeding means applies a high frequency alternating current to the heating unit in a non-contact manner. 3. The power feeding means is in the form of a rail continuously arranged along a heating region in a moving path, and the heating unit body is not in contact with the rail-shaped power feeding means. The continuous high-frequency heating device according to claim 2, further comprising a power receiving unit that receives the alternating current. 4. The power receiving means is formed in a flat plate shape, and the rail-like power feeding means has a facing surface facing the power receiving means. The flat plate power receiving means is provided on the facing surface. The continuous high-frequency heating device according to claim 3, wherein a high-frequency alternating current is applied in a non-contact manner by facing each other. 5. The rail-shaped power feeding means or power receiving means is provided in a moving path of the heating unit body so as to change an application level of a high frequency alternating current applied to the heating unit body via the power receiving means. The continuous high-frequency heating device according to claim 4, wherein the opposed area is formed along the same. 6. The continuous high-frequency heating device according to claim 5, wherein the rail-shaped power feeding means is formed such that the area of the facing surface changes along the moving path. 7. The rail-shaped power feeding means is arranged along a moving path of the heating unit body so as to change an application level of a high frequency alternating current applied to the heating unit body via the power receiving means. The continuous high-frequency heating apparatus according to claim 4, wherein the opposed intervals are formed so as to change. 8. The length of one of the power feeding means is set so that the variation rate of the heating unit body which is heated by the entire power feeding means and which moves continuously is less than 0.5. The continuous high frequency heating device according to any one of claims 1 to 7. 9. When the power supply means is arranged in a region corresponding to at least one of the initial stage and the final stage of heating in the heating region, the fluctuation rate of the continuously moving heating unit is , So that it is less than 0.1,
9. The length of the power feeding means is set.
The continuous high-frequency applying device described in. 10. The pair of electrode portions includes the power receiving means, and comprises a feed electrode fed from the feed means and a ground electrode grounded, and the feed electrode and the ground electrode are insulated from each other. 9. The method according to any one of claims 3 to 8, characterized in that
The continuous high-frequency heating device according to item. 11. The continuous high frequency wave according to any one of claims 1 to 10, wherein the heating area includes a high frequency application stop area for temporarily stopping the application of the high frequency alternating current. Heating device. 12. The high frequency application pause region included in the heating region is set to a region corresponding to at least one of an initial stage and a final stage of heating in the heating region. Continuous high frequency heating device. 13. The continuous high-frequency heating device according to claim 1, wherein a conveyor means rotatably stretched around a plurality of support shafts is used as the moving means. .