JP2002373770A - Heating method and device of electromagnetic induction type using endless conveying belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make heating work for a large quantity of objects to be heated full automatically and stably over a string of processes at the preset temperature and in the preset time zone using an electromagnetic induction heating means. SOLUTION: Inside a machine frame 1, endless conveying belts 2 are installed parallel at an appropriate spacing A with adjustability by means of an interlocking mechanism 3 so as to make transport in a fixed direction, and inside each endless conveying belt 2, an electromagnetic induction coil 4 furnished with dielectric hot plates 5 such as iron plate in parallel arrangement on the working surface is installed in such an arrangement that their working surfaces are contacting tangentially with one another, and the two surfaces of each object B to be heated are subjected to a heating work simultaneously while the object B is transported in the gap A between the belts 2 in the pinched condition. Also it is possible that carbon plates 5 are installed on the heat working surfaces so as to generate the heat conducting effect uniformly over the whole area and several electromagnetic induction heating devices 4a-f having different heating generating temperatures are installed inside the belts 2 in such a way as variable and adjustable individually in accordance with the purpose of the heating work of the object B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of heating a large number of objects to be heated by using an electromagnetic induction heating means to set a predetermined temperature and temperature.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic induction heating method using an endless conveyor belt and a device therefor, whose main purpose is to perform stable heating processing automatically in a series of steps under a time zone.

[0002]

2. Description of the Related Art Conventionally, most of the heat processing means using an endless transport belt has been used as a heat source such as gas or electric heat.
The surrounding environment has deteriorated. Further, when electric heat is used as the heat source, it is impossible to always supply a constant amount of heat calories because the amount of replenished heat is limited. In recent years, with the rapid development of electromagnetic induction heating, an electromagnetic induction heating system in which an electromagnetic induction heating mechanism is integrated into a device instead of the gas, electric heating or the like has been developed as a heating source.

[0003]

However, the above-mentioned existing heating mechanism has a structure in which an electromagnetic induction device is incorporated and formed as a single unit, and a large number of objects to be heated are uniformly and electromagnetically heated on both sides simultaneously. The structure which can perform automatic processing stably was not taken. In the heating process,
From the viewpoint of removing foreign matter generated from an object to be heated, a metal scraper or the like is used as a removing mechanism to shorten the service life of the belt.

[0004]

SUMMARY OF THE INVENTION The present invention focuses on the above-mentioned drawbacks, and provides an optimum heating temperature to an object to be heated regardless of the amount of the object to be heated, by constructing a pair structure. However, the object to be heated can be heated simultaneously on both sides simultaneously within the set temperature and time. As shown in the drawing, the endless transport belts 2 and 2 are provided in the machine frame 1 via an interlocking mechanism 3 so as to rotate the endless transport belts 2 and 2 in a fixed direction with an appropriate gap A therebetween. The electromagnetic induction coils 4 and 4 are disposed inside the endless conveyor belts 2 and 2 so that the magnetic induction heating is performed while the object B to be heated is held in the gap A between the endless conveyor belts 2 and 2. It is an object of the present invention to provide an electromagnetic induction heating method and an apparatus therefor, characterized in that both sides are heated at the same time by utilizing the method.

[0005] A cleaning roller 10 formed of a foam material or the like is provided in contact with the surface of the endless conveyor belt 2 in the vicinity of the transfer opening 6 or the outlet 7 of the object B to be heated, so that the endless transfer belt can be simplified without applying a load. In addition, several electromagnetic induction coils 4a, 4b, 4c having different adjustment outputs are applied to the inside of the endless transport belts 2, 2 according to the heating temperature of the object B to be heated. By arranging the objects to be changed so that they can be moved freely, it is also possible to obtain a heating process in accordance with a change in arbitrary temperature while transferring the object to be heated B sequentially.

[0006]

According to the present invention, the object to be heated B to be heated is first arranged side by side on the endless conveyor belt 2 and then placed in parallel. By simultaneously driving the endless transport belts 2, 2, the object to be heated B is sequentially transported in the direction of the carry-out port 7 while being sandwiched between the endless transport belts 2, 2. At the same time as the transfer, the electromagnetic induction coils 4 and 4 are energized from the electromagnetic induction heating device to energize the electromagnetic induction coils 4 and 4.
4, magnetic lines of force are generated, and the dielectric heating plate 5.5 is heated to perform heating processing simultaneously on both sides while transferring the object to be heated B which can be sandwiched between the endless conveyor belts 2 and 2. Thus, the heat-processed product whose heat processing is completed to an appropriate temperature can be automatically taken out from the carry-out port 7. Further, by providing the take-out chute 8 below the carry-out port 7, the heat-processed products from the carry-out port 7 are automatically dropped on the shooter surface and slid down, and are sequentially stored in the storage tray 13 prepared in advance in the take-out port 9. Is performed. The temperature adjustment and the like during the heating process are not described in detail, but the temperature can be changed and adjusted to an appropriate temperature by an automatic temperature management device such as a temperature controller installed in the apparatus or by manual adjustment. Of course. Also, several electromagnetic induction coils 4 having different heating generation temperatures are arranged in the mechanism so that they can be changed and adjusted in accordance with the object B to be heated, so that they are mounted on the endless conveyor belt 2 at the same speed. Various heating processes can be performed on the object B to be heated with a change in temperature.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the accompanying drawings. An interlocking mechanism 3 is provided in a machine frame 1 to transfer endless transport belts 2 and 2 in a predetermined direction with an appropriate gap A therebetween.
And the endless conveyor belts 2,
2, high frequency generators 12 and 1 as magnetic field line generators
The electromagnetic induction coils 4 and 4 connected to the electromagnetic induction coils 4 and 4 are disposed face-to-face with their respective working surfaces in contact with each other. And heat is generated by the action of lines of magnetic force generated by the electromagnetic induction coils 4, 4, and simultaneously heats both sides of the object B to be heated via the endless conveyor belts 2, 2. Further, reference numeral 6 denotes a transport port opened on one side of the machine body, 7 denotes a carry-out port, 8 denotes a take-out shooter that is hung obliquely below the carry-out port 7, and 9 denotes a take-out port, and a panel heater 11 is provided in a part thereof. The storage tray 13 is attached to prevent the temperature of the product to be heated and processed from being faded. In the case where a large number of objects to be heated are simultaneously heated, a large number of articles can be heated at a predetermined temperature in a space-saving manner by arranging the endless conveyor belts 2 in several rows in parallel. . The belt material at this time is not particularly limited, but particularly, by using a heat-resistant Teflon (registered trademark) material, the object to be heated can be easily separated from the belt without applying oil.

As a typical example of the dielectric heating plates 5 and 5, an iron plate can be used. However, if a carbon plate is provided in place of the iron plate, the heat receiving surface is reduced due to the quality of the carbon plate. By making the temperature more uniform, the temperature of the entire heating surface can be made more uniform.

Instead of using the dielectric heating plates 5 and 5 as heating elements, the endless transport belts 2 and 2 are made of a material having a dielectric property, for example, a steel belt. The endless transport belts 2 and 2 themselves can be heated and processed by heating without preparing the endless transfer belts 5 and 5. The steel belt used at this time has a very thin shape, and the uniform distribution of heat is extremely difficult compared to the case of using a dielectric heating plate. Therefore, the electromagnetic induction coils 4 and 4 are movable to promote uniform distribution of temperature. Is also preferable.

Further, according to the present invention, the cleaning roller 1 is formed on the surface of the endless transport belt 2 near the transporting port 6 or the transporting outlet 7 of the heated material, which has elasticity and is made of a flexible foam material or the like.
By providing the rotatable support roller 0 in a light pressure state, it is possible to automatically remove foreign substances adhering to the surfaces of the endless transport belts 2 and 2 while rotating the belt.

Electromagnetic induction coils 4a, b, c having different adjustment outputs depending on the purpose of heating the object to be heated B as shown in FIG. 4 on both sides or any one of the endless conveyor belts 2, 2. , D, e, and f are arranged so as to be variable so that the respective heating temperatures are different. For example, a high-temperature heating zone is prepared by the electromagnetic induction coils 4a, 4a whose adjustment output is set high at the entrance. Thaw the frozen food, heat it to the predetermined temperature in the next transfer, and apply a lattice pattern or letters on the surface of the object B to be heated on the surface of the object B to be heated at the last exit. The entire operation from thawing to finishing can be automatically performed on the same belt in a series of manners in order to attach a unique design pattern. As another embodiment of the present invention, the electromagnetic induction coils 4 and 4 can be installed on any one of the endless conveyor belts 2 and 2 to perform heating processing on only one side. , 2 is not a pair but a plurality or a single unit, and it is effective to perform heating processing. Needless to say, it can be used as another dryer other than heating.

[0012]

As described above, the electromagnetic induction heating method and apparatus according to the present invention are provided with the electromagnetic induction coil in the endless transport belts 2, 2 which are disposed so as to be rotatably transported in a certain direction at appropriate intervals. The heated surfaces of the endless transport belts 2 and 4 can be clamped in the gap A between the endless conveyor belts 2 and 2 by using the magnetic force lines generated by the electromagnetic induction coils 4 and 4 and arranging the working surfaces in contact with each other. Since it is configured so that heating processing can be performed simultaneously on both sides while transferring the object B, it is possible to always and stably heat a large number of objects to be heated fully automatically without human intervention. It has a remarkable effect such as low heat loss, high heating efficiency, simple structure and universal operation by all. In particular, according to the present invention, the object to be heated B is sequentially heated while being held between the belts 2 and 2 at the same time as the transfer of the object to be heated. Thus, it is possible to obtain the heating processing effectively while always maintaining a constant set heating temperature. Moreover, since the present invention is based on the electromagnetic induction heating method, there is no concern about exhaustion and generation of foul odors, as well as the fouling of the room as compared with conventional oil and gas heating, and in order to suppress excess heat loss, It is an ideal heat processing machine that realizes a reduction in running costs and is hygienic by using electricity as a heat source, so it meets various standards such as HACCP in the future.

[0013] Further, by using a carbon plate as the dielectric heating plate 5 on each of the opposing surfaces of the electromagnetic induction coils 4 and 4 as described in claim 3, the entire heat acting surface generates heat uniformly.
The object to be heated can be reliably and uniformly heated in a short period of time.

As described in claim 4, the dielectric heating plate 5,
In place of using the heating element 5 as a heating element, a material in which the endless conveying belts 2 and 2 have dielectric properties, for example, a steel belt, is used, so that the endless conveying belts 5 and 5 are not prepared and the endless conveying belt is used. It is also possible to generate heat and heat the 2, 2 itself. It is also preferable to make the electromagnetic induction coils 4 and 4 movable so as to promote uniform temperature distribution.

Further, as shown in claim 5, the cleaning roller 1 which has elasticity and is formed of a flexible foam material or the like on the surface of the endless transport belt 2 near the transport port 6 or the transport port 7 of the machine body.
By attaching 0 in a light pressure state, there is no need to attach a dangerous cutting blade or the like for removing foreign matter in the past, and foreign matter to be adhered is completely and reliably cleaned without applying a load to the belt. The cleaning roller 1 can be obtained by always keeping a sanitary belt surface.
In other words, it can be easily washed without removing 0.

According to a sixth aspect of the present invention, the electromagnetic induction coils 4 having different adjustment outputs in each of the endless conveyor belts 2 are provided.
By setting a to f on the dielectric heating plate 5 so that they can be changed and adjusted freely, it is possible to perform a heat treatment in which the strength is adjusted on the same belt, and a heating process in a series of steps that can also perform a baking operation with a design pattern. This is a convenient invention, for example, it is possible to carry out the invention.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an electromagnetic induction heating device using an endless transport belt according to the present invention,

FIG. 2 is a front cross-sectional view of the device,

FIG. 3 is an explanatory view of a main part,

FIG. 4 is a schematic view of another embodiment apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine frame 2 Endless conveyance belt 3 Interlocking mechanism 4 Electromagnetic induction coil a-f Electromagnetic induction coil 5 Dielectric heating plate 6 Conveyance port 7 Unloading port 8 Extraction shooter 9 Extraction port 10 Washing roller 11 Panel heater 12 High frequency generator 13 Housing Tray A Gap B Object to be heated

Claims (6)

[Claims] An endless transport belt is provided in parallel with a suitable gap A for rotating and transporting the endless transport belts in a machine frame in a fixed direction. Electromagnetic induction coils 4, 4 having an inductive heating plate 5 attached to the surface
In the electromagnetic induction heating device which is formed by arranging the working surfaces so as to be in contact with each other, the magnetic field heating generated by the electromagnetic induction coils 4 and 4 by driving and transferring the endless conveyor belts 2 and 2 is used. And the gap A between the endless conveyor belts 2
An electromagnetic induction heating method using an endless transport belt, wherein heating processing is performed simultaneously on both sides while transferring an object to be heated B which can be clamped inside. 2. An endless conveyor belt 2 is rotatably arranged in parallel with an appropriate gap A via an interlocking mechanism 3 to transfer the endless conveyor belts 2 and 2 into a machine frame 1 in a fixed direction. Electromagnetic induction coils 4, 4 each having a dielectric heating plate 5 provided in parallel on each working surface inside belts 2, 2 are provided so as to contact the working surfaces with each other. An electromagnetic induction heating device using an endless transport belt, wherein the heating object B which can be sandwiched in the gap A between the belts 2 and 2 is heated at the same time on both sides while being transferred. 3. An electromagnetic induction heating apparatus using the endless transport belt according to claim 2, wherein the endless transport belts are provided.
An electromagnetic induction heating device using an endless transport belt, wherein carbon materials are used as dielectric heating plates 5 and 5 on respective working surfaces of electromagnetic induction coils 4 and 4 attached inside. 4. An electromagnetic induction heating apparatus using the endless transport belt according to claim 2, wherein the endless transport belts are provided.
Instead of using the dielectric heating plates 5 and 5 as heating elements on the respective working surfaces of the electromagnetic induction coils 4 and 4 attached inside, a material in which the endless conveying belts 2 and 2 themselves have a dielectric property, for example, a steel belt By using such, the dielectric heating plate 5,
An electromagnetic induction heating device using an endless transport belt, wherein the endless transport belts 2 and 2 themselves are heated without being prepared and heated. 5. The cleaning roller according to claim 2, wherein the cleaning roller is formed of a foam material or the like in the vicinity of the transfer port 6 or the discharge port 7 of the object B to be heated. An electromagnetic induction heating device using an endless transport belt, wherein the heating device is provided in contact with the surface of the endless transport belt 2. 6. An electromagnetic induction heating apparatus using the endless transport belt according to claim 2, wherein the endless transport belts are provided.
Several electromagnetic induction coils 4 having different adjustment outputs inside
An electromagnetic induction heating device using an endless transport belt, wherein a, 4b to 4f are arranged in a freely changeable manner so as to adapt to the heating temperature of the object B to be heated.