JP2648101B2 - Electromagnetic wave heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave heating apparatus, and more particularly, to an electromagnetic wave heating apparatus for drying things containing moisture such as garbage.

[0002]

2. Description of the Related Art An electromagnetic wave heating apparatus is an apparatus for heating a substance by utilizing the fact that when a substance is exposed to electromagnetic waves, heat is generated in accordance with the magnitude of the dielectric loss of the substance. As a device for performing such heating, a microwave oven is well known.

FIG. 4 shows an outline of a microwave oven (“Nikkei New Material”, March 30, 1992, p. 87). As shown in the figure, the microwave oven has the electromagnetic wave generator 3.
1, a waveguide 32, and an applicator 33. In the applicator 33, a turntable 34 on which a substance to be heated (a heated object 35) is placed is provided. The electromagnetic wave generator 31 is a device that generates microwaves. The microwaves generated by the electromagnetic wave generator 31 are introduced into the applicator 33 by the waveguide 32 and then irregularly on the metal wall surface of the applicator 33. Reflected,
The heating object 35 on the turntable 34 is irradiated.

As described above, the conventional electromagnetic wave heating device (microwave oven) has a structure in which microwaves are reflected irregularly on a metal wall surface to heat an object. For this reason, in the conventional electromagnetic wave heating device, a considerable part of the microwaves generated by the electromagnetic wave generation device returns to the electromagnetic wave generation device as a reflected wave or is absorbed by the wall surface, and the heating efficiency is poor. There was a problem.

In order to solve such a problem, the present applicant has proposed an electromagnetic wave heating device as described below (Japanese Patent Application No. 6-6 / 1994).
No. 029).

FIG. 5 shows an outline of an electromagnetic wave heating device described in Japanese Patent Application No. 6-6029. This electromagnetic wave heating device,
As shown in the figure, the heating object 35 is held in a wedge-shaped container 36 having an apex below, and the apex of the wedge-shaped container 36 is irradiated with an electromagnetic wave generated by the electromagnetic wave generator 31 through the waveguide 32. It has become. For this reason, the electromagnetic wave generated by the electromagnetic wave generator 31 is less likely to be reflected inside the device, and according to this electromagnetic wave heating device, compared to an electromagnetic wave heating device such as a microwave oven,
Efficient heating can be performed.

[0007]

As described above,
According to the electromagnetic wave heating device proposed by the present applicant, it is possible to efficiently heat an object. However, in this electromagnetic wave heating device, the heating object located at the tip of the wedge-shaped container is heated intensively, so that uniform heating cannot be performed. However, there is a problem that a typical heat treatment cannot be performed.

Accordingly, an object of the present invention is to provide an electromagnetic wave heating device capable of performing uniform heating.

Another object of the present invention is to provide an electromagnetic wave heating apparatus capable of continuously heating a large amount of substances.

[0010]

According to the first aspect of the present invention,
Three or more axes arranged parallel to each other, and a non-magnetic and low dielectric loss band-like material wound around the plurality of axes to hold a substance to be heated therein. A cylindrical belt, a circulating mechanism for circulating the cylindrical belt around a plurality of shafts, and an electromagnetic wave with respect to one of the corners of the cylindrical belt formed by the plurality of shafts located below. And an electromagnetic wave generator for irradiating the light.

That is, according to the first aspect of the present invention, a polygonal cylindrical belt for holding a substance to be heated (heated material) inside is arranged so that one corner thereof faces downward. An electromagnetic wave heating device is configured so that the cylindrical belt is circulated (rotated), and an electromagnetic wave is emitted from a direction of a downward angle of the cylindrical belt to a heated object in the cylindrical belt. I do. According to this configuration, the heated object is irradiated with the electromagnetic wave while being stirred in the tubular belt, and is uniformly heated.

According to a second aspect of the present invention, there is provided a cylinder having three or more shafts arranged so as to be parallel to each other, and a non-magnetic and low-dielectric-loss strip-shaped material being passed over the plurality of shafts. Belt, a crusher for crushing the substance to be heated and introducing it into the tubular belt, a circulation mechanism for circulating the tubular belt around a plurality of shafts, and a plurality of shafts One of the corners of the cylindrical belt located below
And an electromagnetic wave generator for irradiating two corners with electromagnetic waves.

That is, according to the second aspect of the present invention, the electromagnetic wave generator is provided with a pulverizer for pulverizing a substance to be heated (heated material) supplied into the cylindrical belt, and the pulverized heated material is supplied to the cylindrical belt. The apparatus is configured to irradiate the heating object with electromagnetic waves while stirring by circulation of the belt. This enables more uniform heating.

According to a third aspect of the present invention, there is provided a liquid crystal display device which is arranged so as to be parallel to each other and to have a predetermined inclination angle with respect to a horizontal direction.
More than one shaft, a cylindrical belt for holding a substance to be heated inside, which is formed by passing a non-magnetic and low dielectric loss band material over a plurality of shafts, and this cylindrical belt A circulating mechanism for circulating around a plurality of shafts; and an electromagnetic wave generator for irradiating an electromagnetic wave to one of the corners of the cylindrical belt formed by the plurality of shafts located below. .

That is, according to the third aspect of the present invention, the polygonal tubular belt for holding the substance to be heated (heated material) inside, the one corner of which faces downward, and The cylindrical belt is circulated (rotated) so as to have a predetermined inclination angle as a whole, and electromagnetic waves are emitted from the direction of the downwardly directed angle to the heated material supplied into the cylindrical belt. The electromagnetic wave heating device is configured to be irradiated. According to this configuration, the heated material supplied from one end of the tubular belt is stirred and moved to the other end by the circulation of the tubular belt, so that the continuous heating process is performed. It becomes possible.

According to a fourth aspect of the present invention, there is provided a liquid crystal display device which is arranged so as to be parallel to each other and to have a predetermined inclination angle with respect to a horizontal direction.
A cylindrical belt composed of a plurality of shafts, a non-magnetic and low dielectric loss band-shaped material spread over a plurality of shafts, and a crusher for crushing a substance to be heated and introducing the crushed material into the cylindrical belt And a circulating mechanism for circulating the cylindrical belt around a plurality of shafts, and an electromagnetic wave for irradiating an electromagnetic wave to one of the corners of the cylindrical belt formed by the plurality of shafts located below. And a generator.

That is, in the invention according to the fourth aspect, the electromagnetic wave generator is provided with a pulverizer for pulverizing a substance to be heated (heated material) supplied into the inclined cylindrical belt, and the pulverized material is pulverized. The apparatus is configured to irradiate the heating object with electromagnetic waves while stirring the heating object by circulation of the cylindrical belt. The target object is irradiated with electromagnetic waves while stirring the heated material after the pulverization by the circulation of the cylindrical belt. According to this configuration, the heated material supplied from one end of the tubular belt is agitated and moved to the other end by the circulation of the tubular belt. Becomes possible. Further, since the heating is performed after the pulverization by the pulverizer, uniform heating is possible regardless of the state of the heated object.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments.

First Embodiment

FIG. 2 shows an outline of an electromagnetic wave heating apparatus according to a first embodiment of the present invention. The electromagnetic wave heating device of the first embodiment is a device for heating and drying a substance in a batch system,
As shown in the drawing, the electromagnetic wave generator 11, the waveguide 12, and the cylindrical belt 13 are configured. The electromagnetic wave generation device 11 is a device that generates an electromagnetic wave in the microwave region, and the electromagnetic wave generated by the electromagnetic wave generation device 11 is
2 guides in the direction of the cylindrical belt 13.

The tubular belt 13 has a belt-like member and three shafts 1.
5 as shown in the figure, and are arranged such that one axis is downward. The waveguide 12
In the portions corresponding to the upper and lower portions of the tubular belt 13,
An inlet 21 and an outlet 22 are provided. The belt-shaped member used for forming the cylindrical belt is preferably made of a material that is nonmagnetic, has low dielectric loss, and has both flexibility and heat resistance. In the apparatus, the tubular belt 13 is formed using a belt-shaped member made of PPS (polyphenylene sulfide) resin.

At the time of the heat treatment using this electromagnetic wave heating device, the cylindrical belt 13 is circulated (rotated) in the direction shown by the arrow by a circulation mechanism (not shown).
As shown in FIG. 3, the heated material repeatedly moves along the belt surface and falls from the belt surface in the tubular belt 13. For this reason, in this electromagnetic wave heating device, the heated material is sufficiently stirred, and uniform heating is performed without causing scorching or the like due to local heating. Further, since the irradiation of the electromagnetic wave is performed from the axial direction, the cylindrical belt 1
The amount of electromagnetic waves reflected by 3 is small, and efficient heating is performed.

Second Embodiment

FIG. 1 shows an outline of an electromagnetic wave heating apparatus according to a second embodiment of the present invention. The electromagnetic wave heating device of the second embodiment is a device for continuously heating a substance, and includes an electromagnetic wave generator 11, a waveguide 12, a cylindrical belt 13, and a crusher 14.
It is constituted by.

The pulverizer 14 is a device for pulverizing the material to be heated, which has been input from the input port 21, to a size of about 5 mm square or less, and is disposed at one opening of the cylindrical belt 13. The tubular belt 13 is wider than the tubular belt of the first embodiment, and is arranged to be higher when the crusher 14 is provided. The cylindrical belt 13 in the second embodiment also performs the first
In the same manner as in the first embodiment, circulation is performed in a direction indicated by an arrow by a circulation mechanism (not shown).

In the electromagnetic wave heating apparatus of the second embodiment having the above-described structure, the material fed from the inlet 21 is crushed by the crusher 14 to a predetermined size or less, and then the cylindrical belt 13 is crushed. Supplied within. The heating material 16 supplied into the cylindrical belt 13 is irradiated with electromagnetic waves while being stirred by the circulation of the cylindrical belt 13, and at a speed corresponding to the width, the inclination angle, and the circulation speed of the cylindrical belt 13. , In the direction of the outlet 22.

For this reason, in this electromagnetic wave heating apparatus, the individual substances are heated uniformly by the equal size of the substances to be subjected to the heat treatment, and the stirring is sufficiently performed. And uniform heating becomes possible. Further, continuous heating can be realized without causing a phenomenon that a heated object is clogged in the tubular belt.

In order to change the time during which the heating process is performed on the heating object 16 (the time required to move from the charging port 21 to the discharging port 22), the width (axial length) of the cylindrical belt 13 is changed. ), The inclination angle and the circulation speed may be adjusted, and the electromagnetic wave generator of the second embodiment is configured to adjust the processing time by changing the circulation speed. In order to be able to change the processing time in a wider range, it is desirable to add a function of changing the inclination angle.

In the case of heating a substance which is not preferable to be pulverized or a substance which does not need to be pulverized, an electromagnetic wave heating device may be provided without the pulverizer. Furthermore, if the cylindrical belt is configured to have a large internal space by four or more shafts, the crusher can be easily arranged, and when the crusher is not used, the material to be heated can be introduced. Can easily obtain an electromagnetic wave heating device.

In each of the electromagnetic wave heating apparatuses of the embodiments, the tubular belt is made of PPS resin. However, the tubular belt may be made of a woven glass fiber. May be used in which glass fibers are woven.

[0031]

As described above, according to the first to fourth aspects of the present invention, it is possible to uniformly heat a substance.

Further, when the cylindrical belt is configured to be inclined as in the second or fourth aspect of the present invention, it is possible to continuously heat the substance.

Further, when the heating is performed after the material to be heated is crushed as in the third or fourth aspect of the present invention, the size of the heated material becomes equivalent. , The stirring will be performed better,
Further uniform heating can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an electromagnetic wave heating device according to a second embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an electromagnetic wave heating device according to a first embodiment of the present invention.

FIG. 3 is a perspective view for explaining the behavior of a substance to be heated in a cylindrical belt of the electromagnetic wave heating device of the embodiment.

FIG. 4 is a schematic configuration diagram of a conventional electromagnetic wave heating device (microwave oven).

FIG. 5 is a schematic configuration diagram of an electromagnetic wave heating device described in Japanese Patent Application No. 6-9029.

[Explanation of symbols]

 11, 31 Electromagnetic wave generator 12, 32 Waveguide 13 Cylindrical belt 14 Crusher 15 Shaft 16, 35 Heated object 21 Inlet 22 Outlet 33 Applicator 34 Turntable 36 Wedge-shaped container

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yasuo Takeuchi 1-10-12 Ueno, Taito-ku, Tokyo Inside of NEC Corporation (72) Inventor Yasumasa Murai 1-10- Ueno, Taito-ku, Tokyo No. 12 Nippon Electric Seiki Co., Ltd.

Claims (4)

(57) [Claims] 1. A material to be heated, constituted by three or more shafts arranged parallel to each other, and a band-shaped material having a low magnetic loss and a low dielectric loss being passed over the plurality of shafts. A tubular belt for holding the inside of the tubular belt; a circulating mechanism for circulating the tubular belt around the plurality of shafts; and a lower position among corners of the tubular belt formed by the plurality of shafts. An electromagnetic wave generator for irradiating an electromagnetic wave toward one of the corners. 2. A cylindrical belt formed by passing a non-magnetic and low-dielectric-loss band-shaped material over three or more shafts arranged so as to be parallel to each other; A crusher for crushing a substance to be introduced into the cylindrical belt, a circulating mechanism for circulating the cylindrical belt around the plurality of shafts, and a cylindrical belt formed by the plurality of shafts And an electromagnetic wave generator for irradiating an electromagnetic wave toward one of the corners located below. 3. A method in which three or more shafts are arranged so as to be parallel to each other and have a predetermined inclination angle with respect to a horizontal direction, and a non-magnetic and low-dielectric-loss band-like material is passed over the plurality of shafts. A cylindrical belt for holding a substance to be heated therein, a circulating mechanism for circulating the cylindrical belt around the plurality of shafts, and a cylinder formed by the plurality of shafts An electromagnetic wave generator for irradiating an electromagnetic wave to one of the corners of the belt in a lower position. 4. A method in which three or more shafts are arranged so as to be parallel to each other and have a predetermined inclination angle with respect to the horizontal direction, and a non-magnetic and low-dielectric-loss band-like material is passed over the plurality of shafts. A crusher configured to crush the substance to be heated and introduce the crushed substance into the cylindrical belt; a circulating mechanism configured to circulate the cylindrical belt around the plurality of shafts; An electromagnetic wave heating device, comprising: an electromagnetic wave generator that irradiates an electromagnetic wave to one of the corners of a cylindrical belt formed by a book shaft, which is located below.