Drying device

Abstract

A drying apparatus according to one embodiment of the present disclosure may include: an upper drying portion formed at an upper portion of an object to be dried and including first drying nozzles formed extending in a width direction of the object to be dried and second drying nozzles formed alternately with the first drying nozzles; and a lower drying portion formed at a lower portion of the object to be dried and including a lower drying nozzle formed extending in a width direction of the object to be dried, the first drying nozzle and the second drying nozzle being capable of drying the object to be dried by different heat sources. According to one specific embodiment of the invention, the dried object can be effectively prevented from being excessively dried or not dried when the dried object is dried, so that the drying deviation of the dried object is minimized, and the drying precision is improved.

Description

Technical Field

[0001] The present disclosure relates to a drying device. Background Art

[0002] In recent years, various batteries have been developed and used as power sources in response to the demand for miniaturization and lightness of mobile information terminals such as mobile phones and notebook computers, and the high capacity of electric vehicles and hybrid vehicles. The electrode plates used in such secondary batteries and capacitors are produced by coating electrode powder in the form of slurry on the surface of a support and drying it.

[0003] In the production process of such a plate, a drying chamber device as shown in Patent Document 1 is used to dry the solvent in the slurry sprayed on the support. Various attempts have been made to improve the drying efficiency, drying deviation and other drying qualities of the existing drying by heat source.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: JP2014-231950A Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] According to one aspect of the present disclosure, a drying device that minimizes drying deviation when drying an object to be dried may be provided.

[0009] According to another aspect of the present disclosure, a drying device can be provided, which can independently control the drying temperature when drying an object to be dried and can effectively control the residual heat when the drying device is turned on / off.

[0010] (II) Technical solution

[0011] A drying device according to a specific embodiment of the present disclosure may include: an upper drying section formed on an upper portion of an object to be dried, the upper drying section including a first drying nozzle extending in a width direction of the object to be dried and a second drying nozzle formed on the same plane as the first drying nozzle; and a lower drying section formed on a lower portion of the object to be dried, the lower drying section including a lower drying nozzle extending in the width direction of the object to be dried, the first drying nozzle and the second drying nozzle being able to dry the object to be dried by using different heat sources.

[0012] Here, the first drying nozzle may include a hot air heater, and the second drying nozzle may include an infrared heater.

[0013] In addition, the second drying nozzle may include a second divided nozzle divided into at least one in the width direction of the object to be dried.

[0014] In addition, the lower drying nozzle may be formed to face the first drying nozzle.

[0015] In addition, a shielding adjustment part may be further included, which is arranged between the object to be dried and the upper drying part, and the shielding adjustment part includes: a guide rail arranged in the width direction and the length direction of the upper drying part; and a shielding plate shielding a part or all of the area between the first drying nozzle or the second drying nozzle and the object to be dried along the guide rail.

[0016] In addition, at least one shielding plate may be formed to move along the length direction of the second drying nozzle to shield one end or the other end of the object to be dried.

[0017] In addition, the shielding plate may have a width greater than a width of the first drying nozzle or the second drying nozzle.

[0018] In addition, the width of the first drying nozzle may be formed to be 150 mm to 250 mm, the width of the second drying nozzle may be formed to be 130 mm to 180 mm, and the width of the lower drying nozzle may be formed to be 150 mm to 250 mm.

[0019] In addition, the second drying nozzle may include a second divided nozzle divided into a plurality of nozzles in the width direction of the object to be dried and a second single nozzle formed integrally in the width direction of the object to be dried, and the second single nozzle and the second divided nozzle may be alternately formed between the first drying nozzles.

[0020] In addition, the plurality of second divided nozzles may be individually controlled according to positions according to the drying state of the object to be dried.

[0021] In addition, multiple second split nozzles can be formed separated from each other, and the second split nozzles can be formed correspondingly on one side and the other side of the first drying nozzle, respectively. The multiple second split nozzles formed on one side of the first drying nozzle can be controlled together with the same output, and the multiple second split nozzles formed on the other side of the first drying nozzle can be controlled together with the same output.

[0022] In addition, the length of the first drying nozzle in the width direction of the object to be dried may be formed to be 1.5 to 2 times the length of the second divided nozzle in the width direction of the object to be dried.

[0023] According to another specific embodiment of the present disclosure, a drying device may include: an upper drying portion formed on an upper portion of an object to be dried, and the upper drying portion includes a first drying nozzle extending in a width direction of the object to be dried and a second drying nozzle formed on the same plane as the first drying nozzle and formed with a heat source different from that of the first drying nozzle; and the second drying nozzle includes a single drying nozzle located on one side in the width direction of the object to be dried and a plurality of drying nozzles located on the other side in the width direction of the object to be dried, and the single drying nozzle and the plurality of drying nozzles may be formed to alternate with each other on one side and the other side in the width direction of the object to be dried in a length direction of the object to be dried.

[0024] Here, the second drying nozzle and the first drying nozzle may be alternately arranged, and the single drying nozzle and the plurality of drying nozzles formed in one direction on one side in the width direction of the object to be dried may be controlled with the same output, and the single drying nozzle and the plurality of drying nozzles formed in one direction on the other side in the width direction of the object to be dried may be controlled with the same output.

[0025] In addition, the single drying nozzle may include one infrared heater, the plurality of drying nozzles may include two or more infrared heaters, and the single drying nozzle and the plurality of drying nozzles may be spaced apart at the same interval in the moving direction of the object to be dried.

[0026] The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0027] It should be noted that the terms and words used in this specification and claims should not be interpreted as general meanings or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical ideas of the present invention based on the principle that the inventor can appropriately define the concepts of the terms in order to explain his own invention in the best manner.

[0028] (III) Beneficial effects

[0029] According to a specific embodiment of the present disclosure, it is possible to effectively prevent the object from being over-dried or under-dried during drying, minimize the drying deviation of the object, and thus improve the drying accuracy.

[0030] In addition, the drying temperature of the object to be dried can be effectively controlled, and the residual heat when the drying device is turned on / off can be physically blocked, so that the drying degree of the object to be dried can be effectively controlled.

[0031] In addition, the degree of drying of the object to be dried can be appropriately adjusted according to the position of the object to be dried, thereby effectively overcoming the limitation of the physical drying area of ​​the drying device.

[0032] Furthermore, the drying nozzles are formed according to the positions of the objects to be dried and can be controlled individually, thereby minimizing the drying deviation of the objects to be dried when the objects to be dried are dried.

[0033] In addition, the drying temperature of the object to be dried can be effectively controlled by using a plurality of different heat sources in the drying device.

[0034] In addition, by adjusting the physical structure and arrangement of the drying nozzle of the drying device, the drying reliability of the dried object can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a plan view of an upper drying portion of a drying device according to a specific embodiment of the present disclosure.

[0036] Figure 2 is a plan view of a lower drying section of a drying device according to a specific embodiment of the present disclosure.

[0037] Figure 3 is a side view of a drying device according to a specific embodiment of the present disclosure.

[0038] Figure 4 is a plan view of a drying device according to a specific embodiment of the present disclosure.

[0039] Figure 5 is a side view of a drying device incorporating a shielding adjustment portion according to a specific embodiment of the present disclosure.

[0040] Figure 6 is a plan view of a shielding adjustment portion according to a specific embodiment of the present disclosure.

[0041] Figure 7 is a plan view of an upper drying portion of a drying device according to another specific embodiment of the present disclosure.

[0042] Description of reference numerals:

[0043] 10: Upper drying section

[0044] 11: First drying nozzle 12: Second drying nozzle

[0045] 12a: Second split nozzle 12b: Second single nozzle

[0046] 13: Second drying nozzle

[0047] 13a: Multiple drying nozzles 13b: Single drying nozzle

[0048] 20: Lower drying section

[0049] 21: Lower drying nozzle

[0050] 30: Shielding adjustment unit

[0051] 31: Guide rail 32: Shielding plate

[0052] E: Object to be dried DETAILED DESCRIPTION

[0053] The purpose, advantages and features of the present disclosure will become more clear from the following detailed description and preferred embodiments in conjunction with the accompanying drawings, but the present disclosure is not necessarily limited thereto. In addition, when describing the present disclosure, if it is determined that the detailed description of the relevant known technology may unnecessarily obscure the gist of the present disclosure, its detailed description will be omitted.

[0054] When assigning reference numerals to components in the drawings, it should be noted that the same reference numerals are assigned as much as possible even if the same components are shown in different drawings, and similar reference numerals are assigned to similar components.

[0055] The terms used to describe a specific embodiment of the present disclosure are not intended to limit the present disclosure. It should be understood that unless the context clearly indicates otherwise, a singular expression includes a plural expression.

[0056] The expressions "having", "may have", "including", "may include", etc. used in this document refer to the existence of corresponding features (for example, numerical values, functions, operations, components, etc.), and do not exclude the existence of additional features.

[0057] The terms “one”, “other”, “another”, “first”, “second” and the like are used to distinguish one component from another component, and the components are not limited by these terms.

[0058] The embodiments and drawings described herein are not intended to limit the present disclosure to specific embodiments. It should be understood that the present disclosure includes various modifications, equivalents and / or alternatives of the embodiments.

[0059] A specific embodiment of the present disclosure will be further described below with reference to specific embodiments and drawings. Here, the specific embodiments included in the embodiments are only illustrative of the present disclosure and do not limit the scope of the attached claims. It is obvious to those skilled in the art that various modifications and changes can be made to the embodiments within the scope of the present disclosure and the scope of the technical concept, and these modifications and changes belong to the scope of the attached claims.

[0060] Figure 1is a plan view of an upper drying portion of a drying device according to a specific embodiment of the present disclosure, Figure 2 is a plan view of a lower drying section of a drying device according to a specific embodiment of the present disclosure, Figure 3 is a side view of a drying device according to a specific embodiment of the present disclosure, Figure 4 is a plan view of a drying device according to a specific embodiment of the present disclosure, Figure 5 is a side view of a drying device incorporating a shielding adjustment portion according to a specific embodiment of the present disclosure, Figure 6 is a plan view of a shielding adjustment portion according to a specific embodiment of the present disclosure.

[0061] A drying device according to a specific embodiment of the present disclosure includes: an upper drying section 10 formed at an upper portion of an object E, and including a first drying nozzle 11 extending in a width direction w of the object E and a second drying nozzle 12 formed on the same plane as the first drying nozzle 11; and a lower drying section 20 formed at a lower portion of the object E, and including a lower drying nozzle 21 extending in the width direction w of the object E, wherein the first drying nozzle 11 and the second drying nozzle 12 can dry the object E by using different heat sources.

[0062] In the present disclosure, the term "object to be dried E" is a general term for drying objects, and refers to drying objects in the form of various sheets. Although the drying of electrode plates in the field of secondary batteries is exemplified, the object to be dried E in the present disclosure is not limited to electrode plates, but may also be various objects to be dried E that need to eliminate position deviation during drying and uneven drying amounts during drying.

[0063] like Figure 1 As shown, the first drying nozzle 11 and the second drying nozzle 12 can be mixed in the upper drying part 10 of the drying device according to a specific embodiment of the present disclosure. In the drawings, the first drying nozzle 11 and the second drying nozzle 12 are alternately formed, but it is not limited thereto, and the first drying nozzle 11 and the second drying nozzle 12 can be set at various positions where the drying deviation of the dried object E needs to be overcome.

[0064] The first drying nozzle 11 and the second drying nozzle 12 can dry the object E using different heat sources. The first drying nozzle 11 can dry the object E using a hot air method including a hot air heater, and the second drying nozzle 12 can dry the object E using a radiation method including an infrared ray heater.

[0065] The first drying nozzle 11 and the second drying nozzle 12 are mixedly arranged, and the first drying nozzle 11 and the second drying nozzle 12 dry the object E in different ways, respectively, so that a residual heat source of the object E can be ensured.

[0066] The first drying nozzle 11 and the second drying nozzle 12 may be formed to extend in the width direction w of the object E in the moving direction of the object E and may be spaced apart from each other at a predetermined interval. When the object E is dried, both end portions in the width direction w may not be dried or the center portion may be over-dried, so the drying heat and drying position by the first drying nozzle 11 and the second drying nozzle 12 may be adjusted.

[0067] The second drying nozzle 12 may include an infrared heater using radiant heat, and the second drying nozzle 12 may be composed of a plurality of second divided nozzles 12a formed at predetermined intervals in the length direction of the second drying nozzle 12. As shown in the figure, the second divided nozzle 12a is divided into one side and the other side in the width direction of the object E in the length direction of the object E. Figure 1 The upper and lower parts in the plan view are formed with a plurality of them.

[0068] That is, a plurality of second divided nozzles 12 a are provided at intervals in the width direction w of the object E, so that the drying temperature, position and drying amount of the object E in the width direction w can be adjusted by the second drying nozzles 12 while the first drying nozzles 11 are drying.

[0069] In this case, each second divided nozzle 12a can be controlled individually, so that the drying temperature can be appropriately adjusted according to the position of the over-dried or under-dried object E, and the device operation of each position can be turned on / off. At this time, the plurality of second divided nozzles 12a can be divided into an upper part and a lower part in the traveling direction of the object E. In this case, the plurality of second divided nozzles 12a in the upper part can be controlled with the same output as one control range, and the plurality of second divided nozzles 12a in the lower part can be controlled with the same output as another control range. In this way, the upper divided nozzles and the lower divided nozzles of the second drying nozzles 12 of the upper drying section 10 can be controlled individually.

[0070] The second drying nozzle 12 may be a mixture of a plurality of divided second divided nozzles 12 a and a single second single nozzle 12 b that is not divided like the first drying nozzle 11 .

[0071] The second single nozzle 12b and the second divided nozzle 12a have different forms, so the drying temperature and the like can be controlled separately for each form, and the plurality of second single nozzles 12b can be controlled together with the same output independently of the second divided nozzles 12a.

[0072] By appropriately setting and mixing the hot air drying of the first drying nozzle 11 and the radiant heat drying of the second drying nozzle 12 , the drying of the object E can be controlled more accurately.

[0073] The length a1 of the first drying nozzle 11 may be formed to be 1.5 to 2 times the length b1 of one second divided nozzle 12a of the second drying nozzle 12, based on the length in the width direction w of the object E to be dried. The second drying nozzle 12 which can be more accurately controlled according to the position and drying temperature may be provided together with the first drying nozzle 11 of the basic hot air method in the form of a second divided nozzle 12a and a second single nozzle 12b. The drying degree, drying temperature and drying position of the object E to be dried by multiple heat sources may be more accurately controlled by the relative ratio of the lengths (a1, b1, c1) of the first drying nozzle 11 and the second drying nozzle 12. In addition, the durability of the drying device may be ensured by the physical arrangement of the first drying nozzle 11 and the second drying nozzle 12, and the mutual interference between the heat sources which may occur due to the use of different heat sources during the drying process may be minimized, thereby more accurately reducing the drying deviation.

[0074] Here, the first drying nozzle 11 and the second drying nozzle 12 may be arranged to cover both ends of the object E in the width direction w, so as to more effectively prevent the end portions of the object E in the width direction w from not being dried. That is, when the second drying nozzle 12 is divided into a plurality of nozzles, the first drying nozzle 11 and the second drying nozzle 12 may be respectively arranged to coincide with both ends of the object E in the width direction w. In addition, the intervals between the plurality of second divided nozzles 12a may be adjusted so that one ends of the second divided nozzles 12a are aligned with the same position.

[0075] The first drying nozzle 11 and the second drying nozzle 12 may be formed to be spaced a predetermined distance apart from each other, the width a2 of the first drying nozzle 11 in the length direction may be formed to be 150 mm to 250 mm, and the width b2, c2 of the second drying nozzle 12 in the length direction may be formed to be 130 mm to 180 mm.

[0076] In order to adjust the drying degree by using different heat sources, it can be adjusted within the above-mentioned appropriate range to improve the reliability of the drying effect of the object E to be dried.

[0077] like Figure 2 As shown, the lower drying part 20 of the drying device according to a specific embodiment of the present disclosure may include a lower drying nozzle 21 formed parallel to the length direction of the first drying nozzle 11 or the second drying nozzle 12. A plurality of lower drying nozzles 21 may be provided, and each lower drying nozzle is spaced apart and arranged side by side.

[0078] The lower drying nozzle 21 may be disposed to face the first drying nozzle 11 or the second drying nozzle 12 of the upper drying part 10 and formed with the same width as the facing drying nozzle, thereby effectively controlling the drying deviation between the upper and lower surfaces of the object E.

[0079] The lower drying nozzle 21 may be formed to have the same width and length as the first drying nozzle 11, and a width d2 of the lower drying nozzle 21 in the length direction may be formed to be 150 mm to 250 mm. A length d1 of the lower drying nozzle 21 may be formed to correspond to the facing first drying nozzle 11.

[0080] like Figure 3 As shown, the upper surface and the lower surface of the object E can be dried by the upper drying part 10 and the lower drying part 20 respectively.

[0081] like Figure 4 As shown, a separate shielding and adjusting part 30 may be provided between the upper drying part 10 and the object to be dried E. When the object to be dried E is dried by the first drying nozzle 11 or the second drying nozzle 12, the shielding and adjusting part 30 may effectively shield the residual heat that will last for a period of time during the opening / closing operation of the drying device even after the device is closed, so as to adjust the drying temperature or drying amount. In particular, when the second drying nozzle 12 dries the object to be dried E by radiant heat, in order to effectively control the residual heat that will last for a period of time even if the operation is closed for a moment, a physical shielding and adjusting part 30 may be used.

[0082] Specifically, Figure 5 and Figure 6 As shown, the shielding adjustment part 30 may include a guide rail 31 for guiding the shielding plate 32 to move along the formation direction of the first drying nozzle 11 or the second drying nozzle 12 of the upper drying part 10. As needed, the shielding plate 32 may physically block a portion of the first drying nozzle 11 or the second drying nozzle 12 through the guide rail 31, thereby preventing excessive drying of the object E by residual heat in advance.

[0083] The guide rail 31 may be correspondingly disposed in the separation space between the first drying nozzle 11 and the second drying nozzle 12 so as to minimize interference with the drying process through the first drying nozzle 11 or the second drying nozzle 12 while physically moving the shielding plate 32. In addition, a material with low thermal conductivity may be used to prevent the residual heat of the first drying nozzle 11 or the second drying nozzle 12 from being transferred to the object E to be dried.

[0084] Figure 7 is a plan view of an upper drying portion of a drying device according to another specific embodiment of the present disclosure.

[0085] A drying device according to another specific embodiment of the present disclosure includes an upper drying portion 10 formed on an upper portion of an object E, and the upper drying portion 10 includes a first drying nozzle 11 extending in a width direction of the object E and a second drying nozzle 13 formed on the same plane as the first drying nozzle 11 and formed with a heat source different from that of the first drying nozzle 11, the second drying nozzle 13 includes a single drying nozzle 13b located on one side in the width direction of the object E and a plurality of drying nozzles 13a located on the other side in the width direction of the object E, and the single drying nozzle 13b and the plurality of drying nozzles 13a may be formed to alternate with each other on one side and the other side in the width direction of the object E in the length direction of the object E.

[0086] The first drying nozzle 11 and the second drying nozzle 13 may be formed on the same plane of the upper drying part 10. The first drying nozzle 11 and the second drying nozzle 13 may adopt drying methods using different heat sources. In the present disclosure, the first drying nozzle 11 may adopt a drying method using hot air, and the second drying nozzle 13 may adopt a drying method using an infrared heater.

[0087] The second drying nozzle 13 and the first drying nozzle 11 can be arranged alternately, but can be applied to the entire structure or part of the structure of the upper drying part 10, and considering the drying deviation of the object E, the arrangement of the first drying nozzle 11 and the second drying nozzle 13 can be appropriately changed.

[0088] like Figure 7 As shown, the second drying nozzle 13 may include a single drying nozzle 13b composed of a single infrared heater and a plurality of drying nozzles 13a composed of two or more infrared heaters.

[0089] The single drying nozzle 13 b and the plurality of drying nozzles 13 a may be formed in a manner of being divided and separated from each other in the formation direction of the first drying nozzle 11 , and the size or form of the division is not limited to that shown in the figure and may be appropriately changed.

[0090] like Figure 7 As shown, the single drying nozzle 13b and the plurality of drying nozzles 13a may be alternately formed in the moving direction of the object E. In other words, the single drying nozzle 13b and the plurality of drying nozzles 13a are respectively formed on one side and the other side in the width direction of the object E, and the single drying nozzle 13b and the plurality of drying nozzles 13a are alternately arranged in the moving direction of the object E, so that the drying according to the position of the object E can be effectively adjusted, and the overall drying deviation can be reduced.

[0091] exist Figure 7In the upper part of the figure, the single drying nozzle 13b and the plurality of drying nozzles 13a arranged side by side in the moving direction of the object E on one side in the width direction of the object E can be controlled as one control range with the same output range. In addition, the single drying nozzle 13b and the plurality of drying nozzles 13a arranged side by side in the moving direction of the object E on the other side in the width direction of the object E can be controlled as one control range with the same output range.

[0092] Furthermore, the drying deviation of the entire object E can be adjusted and controlled by setting the single drying nozzle 13 b and the plurality of drying nozzles 13 a to be respectively set as one control range.

[0093] In addition, although the number of infrared heaters of the single drying nozzle 13b and the number of infrared heaters of the multiple drying nozzles 13a are different, the intervals of the spaces formed by the single drying nozzle 13b and the multiple drying nozzles 13a have the same interval in the moving direction of the dried object E, so the drying degree within the same spacing range can be effectively controlled.

[0094] The present disclosure is described in detail with reference to specific embodiments. The embodiments are intended to illustrate the present disclosure in detail, rather than to limit the present disclosure. Obviously, those skilled in the art can make modifications and improvements within the scope of the technical concept of the present disclosure.

[0095] All simple changes or modifications of the present disclosure belong to the scope of the present disclosure, and the specific protection scope of the present disclosure will be clarified by the attached patent claims.

Claims

1. A drying device, comprising: an upper drying section formed on an upper portion of the object to be dried, and comprising a first drying nozzle extending in a width direction of the object to be dried and a second drying nozzle formed on the same plane as the first drying nozzle; as well as a lower drying section formed at the lower part of the object to be dried, and comprising a lower drying nozzle extending in the width direction of the object to be dried, The first drying nozzle and the second drying nozzle dry the object to be dried using different heat sources.

2. The drying device according to claim 1, wherein: The first drying nozzle comprises a hot air heater, The second drying nozzle includes an infrared heater.

3. The drying device according to claim 2, wherein: The second drying nozzle includes at least one second divided nozzle divided in the width direction of the object to be dried.

4. The drying device according to claim 2, wherein: The lower drying nozzle is formed to face the first drying nozzle.

5. The drying device according to claim 1, further comprising: A shielding adjustment part is arranged between the object to be dried and the upper drying part, The shielding adjustment unit comprises: Guide rails are arranged in the width direction and the length direction of the upper drying part; and A shielding plate shields a portion or the entirety of a space between the first drying nozzle or the second drying nozzle and the object to be dried along the guide rail.

6. The drying device according to claim 5, wherein: At least one shielding plate is formed, and the shielding plate moves along the length direction of the second drying nozzle to shield one end or the other end of the object to be dried.

7. The drying device according to claim 5, wherein: The shielding plate has a width greater than a width of the first drying nozzle or the second drying nozzle.

8. The drying device according to claim 2, wherein: The width of the first drying nozzle is formed to be 150 mm to 250 mm, the width of the second drying nozzle is formed to be 130 mm to 180 mm, and the width of the lower drying nozzle is formed to be 150 mm to 250 mm.

9. The drying device according to claim 2, wherein: The second drying nozzle includes a second divided nozzle divided into a plurality of nozzles in the width direction of the object to be dried and a second single nozzle formed integrally in the width direction of the object to be dried. The second single nozzles and the second divided nozzles are alternately formed between the first drying nozzles.

10. The drying device according to claim 9, wherein: The plurality of second divided nozzles are individually controlled according to positions according to the drying state of the object to be dried.

11. The drying device according to claim 9, wherein: A plurality of the second split nozzles are formed to be spaced apart from each other, The second split nozzles are formed correspondingly on one side and the other side of the first drying nozzle, respectively. The plurality of second divided nozzles formed on one side of the first drying nozzle are controlled together with the same output, and the plurality of second divided nozzles formed on the other side of the first drying nozzle are controlled together with the same output.

12. The drying device according to claim 10, wherein: The length of the first drying nozzle in the width direction of the object to be dried is formed to be 1.5 to 2 times the length of the second divided nozzle in the width direction of the object to be dried.

13. A drying device, comprising: an upper drying section formed on an upper portion of the object to be dried, and comprising a first drying nozzle formed to extend in a width direction of the object to be dried and a second drying nozzle formed on the same plane as the first drying nozzle and formed with a heat source different from that of the first drying nozzle; as well as The second drying nozzle includes a single drying nozzle located on one side in the width direction of the object to be dried and a plurality of drying nozzles located on the other side in the width direction of the object to be dried, and the single drying nozzle and the plurality of drying nozzles are formed to alternate with each other on one side and the other side in the width direction of the object to be dried in the length direction of the object to be dried.

14. The drying device according to claim 13, wherein: The second drying nozzles and the first drying nozzles are arranged alternately, The single drying nozzle and the plurality of drying nozzles formed in one direction on one side in the width direction of the object to be dried are controlled with the same output, and the single drying nozzle and the plurality of drying nozzles formed in one direction on the other side in the width direction of the object to be dried are controlled with the same output.

15. The drying device according to claim 14, wherein: The single drying nozzle includes one infrared heater, and the plurality of drying nozzles include more than two infrared heaters. The single drying nozzle and the plurality of drying nozzles are formed to be spaced apart at equal intervals in a moving direction of the object to be dried.

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