KR20110010398A - Dryer - Google Patents

Abstract

PURPOSE: An agricultural product drier using radiant heat is provided to improve the merchantable quality of dried agricultural products by maintaining the shape of the products. CONSTITUTION: An agricultural product drier comprises the following: a drying room(11) drying agricultural products by passing the products through the room; a radiant heat irradiating plate(13) located on the upper inside wall of the drying room; and a transfer drying belt(12) transferring the agricultural products under the radiant heat irradiating plate. The radiant heat irradiating plate includes a substrate, a heat generating layer, and a radiant heat irradiating layer.

Description

Dryer {Dryer}

The present invention relates to a dryer, and more particularly, the present invention relates to a dryer for evenly drying a dried object which is an organic substance such as concentrated aquatic products with high thermal efficiency.

Various methods for drying articles have been devised and used according to the needs of human life.

In particular, drying human foods such as concentrated aquatic products reduces the amount of moisture present in the organics, thereby preventing the growth of microorganisms, and also reducing the volume and weight of organics to improve their preservation. One major method has been widely used for a long time.

Generally, the method of drying the harvested agricultural products can be roughly classified into a natural drying method and a forced drying method.

The natural drying method has an advantage of being able to receive a high price by excellent quality by maintaining excellent quality in a method of drying in a natural state exposed to sunlight, but has a disadvantage of being limited in terms of the use of climate and space.

The forced drying method refers to a method of generating hot air by drying fossil fuel such as oil by burning fuel, and the drying method is widely used and widely used, but such a hot air dryer This is uneconomical due to excessive fuel consumption and power consumption, and it is difficult to produce high quality products because the quality of the agricultural and marine products or other products is reduced by hot air drying.

In addition, in the case of the conventional hot air dryer, in order to maximize the space efficiency and to maximize the use of hot air, the drying boxes containing the dry objects are laminated in multiple layers, and the stacked drying boxes are placed on a path through which the hot air passes. Drying of the dry object by hot air is performed, in which case, the dry object in the dry box located at the hot air inlet part (the part where hot air is first introduced) of the hot air path among the stacked dry boxes has a higher temperature. The dry matter in the dry boxes located at the hot air outlet (the hot air outlet part of the hot air path) among the stacked dry boxes is in contact with hot air having a lower humidity. It comes into contact with hot air having a higher humidity, so that the dryness is different depending on the position on the path of the hot air of these dry objects. Uh, there is a difference in the dry condition of the product as a whole, which not only causes the value of the product to deteriorate, but also increases the operating time of the dryer in order to sufficiently dry the dry matter placed in the hot air outlet. Still has a disadvantage in that the thermal efficiency is lowered, the productivity is lowered, and the drying cost is increased.

At present, in the field of drying, the above-mentioned forced drying method is mainly used. In the forced drying method, since the height of the drying chamber varies depending on the object to be dried, the heat transfer method by the convection of warm air is very low in efficiency. It is pointed out that the quality of the deterioration.

On the other hand, far infrared rays are radiant energy emitted when the ceramic is heated above room temperature, and emits far infrared rays when heated by another heat source. Therefore, it can be used by radiating far-infrared radiation ceramics by heating heated infrared radiation ceramics on the surface of heat-resistant material in the form of plate, tube, lamp, or coating in accordance with various heat treatment characteristics, and heating the far-infrared radiation ceramics as a heat source of heat transfer or other fuel. Has the characteristics.

Such a method of drying by far infrared rays is known.

The Republic of Korea Utility Model Registration No. 20-268069 describes a hot air far-infrared dryer, in which the entire interior of the existing hot air dryer is coated with a ceramic paint in the form of sandpaper surface, and then baked according to firing treatment. 4 to 20 ㎛ of far infrared rays are radiated more than 0.93 by the hot air to minimize the far-infrared shade, the drying chamber (4), the exhaust duct is installed on the drying chamber (4) to the top, the burner installed in the front of the machine room and Including a flue (5) installed in the upper part of the machine room, it is possible to put a plurality of drying boxes (6) in the box rack installed on the side of the drying chamber (4), the hot air generated and the far-infrared rays radiated from the entire drying chamber at the same time to dry A hot air far infrared dryer configured to be used is described, which is schematically shown in FIG. 1.

However, the conventional hot air far-infrared dryer also has a large difference from the conventional forced drying method in consideration of the state in which the dried objects are stacked, and the dryness is still different according to the position on the path, so that the dry state of the product as a whole. This is not only a cause of deterioration of the value of the product, but also an increase in the operating time of the dryer in order to sufficiently dry the to-be-dried body which is located in the hot air drawer, which still leads to a decrease in thermal efficiency. In addition to the disadvantages of low productivity and high drying costs, although far infrared rays of 4 to 20㎛ are emitted over 0.93 to minimize the far-infrared shade, they still have the problem of having a far-infrared shade. can do.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dryer for evenly drying a dried substance which is an organic substance such as concentrated aquatic products with high thermal efficiency.

Dryer according to the present invention for achieving the object of the present invention as described above, the drying chamber is dried while the to-be-dried body; A radiant heat radiating plate positioned on an upper inner wall of the drying chamber; A transfer drying belt for transferring a dry object across the drying chamber under the radiant heat radiating plate, wherein the radiant heat radiating plate comprises a substrate, a heat generating layer, and a radiant heat radiating layer, and one surface of the substrate An electric heating device for radiant heat radiation comprising a heat generating layer is laminated on the heat radiation layer is laminated on the other surface of the substrate or on the heat generating layer, the power supply of energy density 750 to 800w / ㎡ to the heat generating layer When the radiant heat radiating layer maintains a temperature of 85 to 105 ℃, the radiant heat radiating layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And a residual amount of one or more components selected from alcohols and alkoxy silanes, or a substrate, a heat generating layer, and a radiant heat radiating layer, wherein a heat generating layer is laminated on one surface of the substrate and the radiant heat radiating layer is formed on the substrate. An electric heating device for radiant heat radiation included in the form of being laminated on the other surface or the heat generating layer, the radiant heat radiating layer maintains a temperature of 150 to 170 ℃ when supplying the energy density of 1000 to 1400w / ㎡ to the heat generating layer And, the radiant heat radiation layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And at least one component selected from alcohols and alkoxy silanes.

The radiant heat radiating layer positioned on the upper inner wall of the drying chamber may include three separate radiant heat radiating layers of a radiant heat radiating layer, a second radiant radiating layer, and a third radiant radiating layer.

Ultraviolet light may be further installed in the drying chamber.

The drying chamber may further include a first hot air conduit for allowing hot air to pass through the interior of the drying room, and a blower and a heater connected to the first hot air conduit.

The transfer drying belt in the drying chamber may be made of a belt of a net shape in which a belt carrying a dry object has a plurality of meshes.

The drying chamber may further include a second hot air conduit in addition to the first hot air conduit, wherein the first hot air conduit is positioned above the transfer drying belt in the drying chamber, and the second hot air conduit is located in the drying chamber. It may be made to be positioned below the transfer drying belt in the drying chamber.

The first hot air pipe may further include any one or more of a dehumidifier, a heat exchanger, and a deodorizer.

According to the present invention, there is an effect of providing a dryer for evenly drying the dried material which is an organic substance such as concentrated aquatic products with high thermal efficiency.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 2, the dryer according to the present invention includes a drying chamber 11 through which a dry object passes and dried; A radiant heat radiating plate (13) positioned on an upper inner wall of the drying chamber (11); A transfer drying belt 12 for transferring a dry object across the drying chamber 11 under the radiant heat radiating plate 13; wherein the radiating heat radiating plate 13 is a substrate, a heat generating layer And a radiant heat radiating layer, wherein a heat generating layer is laminated on one surface of the substrate, and a radiant heat radiating layer is formed on the other surface of the substrate or on the heat generating layer. The radiant heat radiating layer is maintained at a temperature of 85 to 105 ℃ when the power of the energy density of 750 to 800w / ㎡, the radiant heat radiating layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And a residual amount of one or more components selected from alcohols and alkoxy silanes, or a substrate, a heat generating layer, and a radiant heat radiating layer, wherein a heat generating layer is laminated on one surface of the substrate and the radiant heat radiating layer is formed on the substrate. An electric heating device for radiant heat radiation included in the form of being laminated on the other surface or the heat generating layer, the radiant heat radiating layer maintains a temperature of 150 to 170 ℃ when supplying the energy density of 1000 to 1400w / ㎡ to the heat generating layer And, the radiant heat radiation layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And at least one component selected from alcohols and alkoxy silanes. Therefore, by the above configuration, by radiating radiant heat electromagnetic waves having a strong penetration force against an organism including an human body emitted from the radiant heat radiating plate to function as a heat source for efficient drying of the dried body, efficient drying of the dried object is performed. It is characterized by one point. In particular, the drying by radiant heat has the advantage that the outer and inner parts of the dried object can be heated and dried at the same time to increase the drying efficiency while maintaining the appearance of the dried item almost intact, thereby improving the merchandise after drying.

The heating, comprising a substrate, a heat generating layer and a radiant heat radiating layer, the heat generating layer is laminated on one surface of the substrate, the radiant heat radiating layer is included in the form of being laminated on the other surface of the substrate or the heat generating layer An apparatus comprising: the radiant heat radiating layer maintains a temperature of 85 to 105 ℃ when the power of the energy density of 750 to 800w / ㎡ is supplied to the heating layer, the radiant heat radiating layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And a residual amount of one or more components selected from alcohols and alkoxy silanes, or a substrate, a heat generating layer, and a radiant heat radiating layer, wherein a heat generating layer is laminated on one surface of the substrate and the radiant heat radiating layer is formed on the substrate. An electric heating device for radiant heat radiation included in the form of being laminated on the other surface or the heat generating layer, the radiant heat radiating layer maintains a temperature of 150 to 170 ℃ when supplying the energy density of 1000 to 1400w / ㎡ to the heat generating layer And, the radiant heat radiation layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And the radiant heat radiating plate 13 including one or more components selected from alcohols and alkoxy silanes in a residual amount, and has been developed by the present applicant to provide efficient heating by radiating radiant heat electromagnetic waves having a strong penetrating power to organisms including human body. The present invention relates to an electric heating device for radiant heat radiation that can be used as a device, which is registered as a registered patent No. 10-800119 with the Korean Patent Office. As disclosed in the above-mentioned patent publication, radiation is a phenomenon in which particle beams or electromagnetic waves are emitted by natural and artificial phenomena and actions other than atomic nucleus and small particle conversion. Most materials, regardless of whether they are organic or inorganic, have a high temperature when heat is applied, and vary in the amount or wavelength of radiant heat emitted. However, in the present invention, the radiant heat radiating layer is configured to maintain a temperature of 85 to 105 ° C. or when an energy density of 1000-1400 w / m 2 is applied to the heat generating layer when the energy of 750 to 800 w / m 2 is applied. The radiant heat radiating layer is characterized in that configured to maintain a temperature of 150 to 170 ℃. The inventors have found that the radiant heat radiating efficiency is high when the radiant heat radiating layer is maintained at a temperature of 85 to 105 ° C., and in particular, can radiate radiant heat electromagnetic waves having a wavelength of 8 to 10 μm or slightly shorter than the radiant heat electromagnetic waves. . Even when the temperature of the radiant heat radiating layer is 150 to 170 ° C., the radiant heat radiating efficiency is high and the wavelength of the radiant heat electromagnetic wave having a wavelength of 8 to 10 μm or slightly shorter can be emitted. Radiant heat electromagnetic waves having a wavelength of 8 to 10 μm are known to have a very strong penetration force into organisms including the human body. When the radiant heat electromagnetic wave of the wavelength is absorbed by an organism including the human body, the radiant heat electromagnetic wave transfers the retained energy to an object present around the absorbed object to induce heat generation, thereby raising the temperature of the surrounding object and air. You can. In the present specification, the contents of the registered patent publication are incorporated herein by reference.

The radiant heat radiating layer 13 disposed on the upper inner wall of the drying chamber 11 may be formed of one radiant radiating layer 13, but preferably, as shown in FIG. 2, the radiant heat radiating layer 13, It may be composed of three separate radiant heat radiating layers of the second radiant heat radiating layer 131 and the third radiant heat radiating layer 132. In this case, the radiant heat radiation layer 13 and the third radiation heat radiation layer 132 may be adjusted to a high temperature region and the second radiation heat radiation layer 131 to a low temperature region. That is, the radiant heat radiating layer 13 and the third radiant heat radiating layer 132 include a substrate, a heat generating layer, and a radiant heat radiating layer, and a heat generating layer is laminated on one surface of the substrate, and the radiant heat radiating layer is formed on the substrate. An electric heating device for radiant heat radiation included in the form of being laminated on the other surface or the heat generating layer, the radiant heat radiating layer maintains a temperature of 150 to 170 ℃ when supplying the energy density of 1000 to 1400w / ㎡ to the heat generating layer And, the radiant heat radiation layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And one or more components selected from alcohols and alkoxy silanes in residual amounts, and the second radiation radiating plate 131 includes a substrate, a heat generating layer, and a radiation heat radiating layer, and a heat generating layer on one surface of the substrate. Is stacked, the radiant heat radiating layer is an electric heating device for radiant heat radiation included in the form of being laminated on the other surface of the substrate or the heating layer, the radiant heat when supplying power of energy density 750 to 800w / ㎡ to the heating layer The emission layer maintains a temperature of 85 to 105 ℃, the radiant heat radiation layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And one or more components selected from alcohols and alkoxy silanes may be used. By such a configuration, the drying efficiency is lowered in comparison with the central region in the regions close to the inlet 111 through which the dry body is introduced or the outlet 112 through which the dry body flows out, compared to the central region. It is possible to prevent the drying of the components evenly, while saving the total amount of energy consumed in the overall system.

An ultraviolet lamp 14 may be further installed in the drying chamber 11. The ultraviolet light 14 may be used as long as it can emit ultraviolet rays, and those skilled in the art can be understood to be well known to be able to purchase and use ultraviolet light commercially from prominent manufacturers at home and abroad. . Ultraviolet rays emitted from the ultraviolet light 14 may be irradiated to the organic material to be dried to perform a sterilization function, and may provide an effect of maintaining excellent color even after drying, especially in the drying of colored agricultural products such as red pepper. In the case of red pepper, the so-called 'dried pepper' called 'sunflower', that is, dried naturally in the sun, is more commercially available than the dried dried pepper by the heating method called 'flower pot'. By giving a drying environment similar to the irradiation effect of ultraviolet rays contained in a lot of sunlight can increase the merchandise of the dried object to be dried. At least one ultraviolet light 14 may be used, and a plurality of ultraviolet radiation plates 13, a second radiation heat radiation plate 131, and a third radiation heat radiation plate 132 may be used. The ultraviolet lights, that is, the ultraviolet light 14, the second ultraviolet light 141 and the third ultraviolet light 142 may be installed.

As shown in FIG. 2, the drying chamber 11 includes a first hot air conduit 17 through which the hot air passes through the interior of the drying chamber 11, and a blower connected to the first hot air conduit 17. 15) and the heater 16 may be further included. The air pressurized and blown by the blower 15 is heated while passing through the heater 16, and passes through the drying chamber 11 through the first hot air conduit 17. Functions to promote drying. The first hot air conduit 17 may optionally further include a dehumidifier 18, a heat exchanger 19, and a deodorizer 20 as necessary. The dehumidifier 18, the heat exchanger 19 and the deodorizer 20 are those that can be understood to those skilled in the art can be used to purchase and use those commercially provided by leading manufacturers at home and abroad, The dehumidifier 18 removes moisture from the air containing the moisture leaving the drying chamber 11 and recirculates the air to increase thermal efficiency and increase drying efficiency. The heat exchanger 19 serves to recycle heat in the air exiting the drying chamber 11 to increase the thermal efficiency. The deodorizer 20 functions to remove odorous substances that may be mixed in the air during the drying process of the dry object to be dried in the drying chamber 11 from the air exiting the drying chamber 11.

The transfer drying belt 12 in the drying chamber 11 may be made of a belt of a net shape in which a belt carrying a dry object has a plurality of meshes. Such a mesh belt having a plurality of meshes may have a configuration as shown in Figure 3, for example, such a mesh belt can also be used commercially available from leading manufacturers at home and abroad to those skilled in the art It is known to the extent that the size of the mesh of the belt of the net-shape is also sufficient to have a size that does not escape the dry object to be dried, and transport them while supporting the dry object, the contact between the air and the dry object Maximize the area to increase the drying efficiency.

4 to 6, the drying chamber 11 may further include a second hot air conduit 21 in addition to the first hot air conduit 17, wherein the first hot air conduit ( 17 may be positioned above the transfer drying belt 12 in the drying chamber 11, and the second hot air conduit 21 may be positioned below the transfer drying belt 12 in the drying chamber 11. have. By the configuration as described above it is possible to further increase the drying efficiency of the to-be-dried body by allowing hot air to pass through the transfer drying belt 12 above, below, or the transfer drying belt 12.

That is, as shown in FIG. 4, the first intermittent valve 171 of the first hot air conduit 17 is opened (during intermittent operation), and the third intermittent valve 211 of the second hot air conduit 21 is opened. ) Is closed (during interruption), and both the second intermittent valve 172 of the first hot air conduit 17 and the fourth intermittent valve 212 of the second hot air conduit 21 are opened (during intermittent). In this case, the hot air supplied through the first hot air conduit 17 travels over the transfer drying belt 12 and at the same time is made of a belt having a mesh shape having a plurality of meshes as described above. It can be passed through the transfer drying belt 12 downward to increase the drying efficiency.

In addition, as shown in FIG. 5, the first intermittent valve 171 of the first hot air conduit 17 is closed (during intervening), and the third intermittent valve 211 of the second hot air conduit 21 is closed. ) Is opened (during intervening), and both the second intermittent valve 172 of the first hot air conduit 17 and the fourth intermittent valve 212 of the second hot air conduit 21 are opened (during intermittent). In this case, the hot air supplied through the second hot air conduit 21 travels under the transfer drying belt 12 and at the same time is made of a belt having a mesh shape having a plurality of meshes as described above. By passing upward across the transfer drying belt 12 can be to increase the drying efficiency.

As another embodiment, as shown in FIG. 6, both the first intermittent valve 171 of the first hot air conduit 17 and the third intermittent valve 211 of the second hot air conduit 21 are removed. Opening (regulating during) and opening both the second regulating valve 172 of the first hot air conduit 17 and the fourth regulating valve 212 of the second hot air conduit 21. In this case, the hot air supplied through the first hot air conduit 17 and the second hot air conduit 21 simultaneously travels up and down the transfer drying belt 12 simultaneously and at the same time a plurality of It is possible to pass across the transfer drying belt (12) consisting of a belt in the form of a mesh having meshes to further increase the drying efficiency. In addition to the type of air flows as described above, by controlling the direction of the intermittent valves, the flow direction of the hot air and the amount of hot air are controlled to control the humidity of the dry matter, the amount of dry matter to be dried, and the drying speed. It will be apparent to those skilled in the art that the drying operation can be carried out by appropriate selection according to various variables, and it is understood that the present invention is not limited to the control aspect of the check valves for controlling the flow of air. It can be.

By the configuration as described above, the dryer according to the present invention does not apply the hot air as described above, even when only the radiant heat radiating plates and the ultraviolet light and the flow of unheated air are applied. Drying by intensive heating of the dry body, which is an organic body, without heating the surrounding air, that is, the air in the drying chamber 11 or the components in the other drying chamber 11 by drying by radiation heat having high penetration efficiency into the organism. As a result of drying experiments on the same amount of red pepper by increasing the efficiency, the dryer according to the present invention is about 33% compared to the conventional commercialized hot air dryer, and compared to the heat dryer using a conventional radiator. It was confirmed that the energy saving effect of about 52%.

In other words, during the manufacturing process of the rice noodles made by using the rice produced in Ganghwado, Republic of Korea hot air at 200 ℃ using a known and commercially available hot air dryer of the drying according to the invention and the conventional hot air drying method in the drying process Compared with drying by drying, compared to the conventional drying by the hot air dryer takes about 8 hours on average, drying by the dryer according to the present invention 2 to 3 hours (varies slightly depending on the required drying conditions) On average, it took about 2.5 hours.

In addition, the dryer according to the present invention can be used for drying and ripening almost all organic matters, especially red pepper, citrus, ginseng, noodles (noodles) and the like as a dried object.

Industrial Applicability The present invention can be used in the manufacture of a dryer for drying an organic substance dry matter evenly with high thermal efficiency and the industries using the same.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

1 is a configuration diagram schematically showing an example of a conventional hot air drying apparatus.

Figure 2 is a schematic diagram showing the configuration of a dryer according to one embodiment of the present invention.

3 is a perspective view schematically showing one aspect of the transfer drying belt in the dryer of FIG.

Figure 4 is a schematic diagram showing an example of the configuration of the dryer according to another embodiment of the present invention and its operation.

5 is a view showing another example of the operation of the dryer of FIG.

6 is a view showing another example of the operation of the dryer of FIG.

Claims (7)

A drying chamber which is dried while the object to be dried passes; A radiant heat radiating plate positioned on an upper inner wall of the drying chamber; A transfer drying belt for transferring a dry object across the drying chamber under the radiant heat radiating plate, wherein the radiant heat radiating plate comprises a substrate, a heat generating layer, and a radiant heat radiating layer, and one surface of the substrate An electric heating device for radiant heat radiation comprising a heat generating layer is laminated on the heat radiation layer is laminated on the other surface of the substrate or on the heat generating layer, the power supply of energy density 750 to 800w / ㎡ to the heat generating layer When the radiant heat radiating layer maintains a temperature of 85 to 105 ℃, the radiant heat radiating layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And a residual amount of one or more components selected from alcohols and alkoxy silanes, or a substrate, a heat generating layer, and a radiant heat radiating layer, wherein a heat generating layer is laminated on one surface of the substrate and the radiant heat radiating layer is formed on the substrate. An electric heating device for radiant heat radiation included in the form of being laminated on the other surface or the heat generating layer, the radiant heat radiating layer maintains a temperature of 150 to 170 ℃ when supplying the energy density of 1000 to 1400w / ㎡ to the heat generating layer And, the radiant heat radiation layer is TiO ₂ 3 to 5% by weight; 20 to 25 weight percent SiO ₂ ; 5-7 wt% ZrO ₂ ; Al ₂ O ₃ 5-7 weight percent; 5 to 7 weight percent Fe ₂ O ₃ ; MnO ₂ 5-7 weight percent; Silver nano powder 3 to 5% by weight; 3 to 5% by weight of tourmaline; And at least one component selected from alcohols and alkoxy silanes. The method of claim 1, And the radiant heat radiating layer disposed on the upper inner wall of the drying chamber comprises three separate radiant heat radiating layers of a radiant heat radiating layer, a second radiant radiating layer, and a third radiant radiating layer. The method of claim 1, Dryer characterized in that the ultraviolet light is further installed in the drying chamber. The method of claim 1, The drying chamber further comprises a first hot air conduit through which the hot air passes through the interior of the drying chamber, and a blower and a heater connected to the first hot air conduit. The method of claim 1, And said belt carrying said to-be-dried body in said drying chamber comprises a belt in the form of a net having a plurality of meshes. The method of claim 1, The drying chamber may further include a second hot air conduit in addition to the first hot air conduit, wherein the first hot air conduit is positioned above the transfer drying belt in the drying chamber, and the second hot air conduit is located in the drying chamber. Dryer characterized in that it is made to be positioned below the transfer drying belt in the drying chamber. The method of claim 4, wherein Dryer, characterized in that the first hot air pipe further comprises any one or more of a dehumidifier, heat exchanger, deodorizer.

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