TW201517684A - Infrared heating unit, infrared heating device and drying device - Google Patents

Abstract

An infrared heating unit (30) is provided with a heating element (32) radiating an electromagnetic wave containing infrared when heated, rotatable around a rotation axis (R) and shaped in such a way that, when viewed from underneath in a direction orthogonal to the rotation axis (R), the apparent radiation surface area of the electromagnetic wave varies according to the rotation. In addition, when the heating element (32) is viewed in a cross-section orthogonal to the rotation axis (R), the electromagnetic wave radiation surface is elliptically shaped. In addition, the infrared heating unit (30) is provided with infrared-absorbing plates (70,75) capable of absorbing, among the electromagnetic wave, at least a portion of the infrared radiated from the heating element (32) in a direction other than a direction orthogonal to the rotation axis (R) and downward. Further, the infrared-absorbing plates (70,75) are capable of absorbing, among the electromagnetic wave, at least a portion of the infrared radiated from the heating element (32) in an orthogonal direction (= front-back direction) to the direction orthogonal to the rotation axis (R) and downward.

Description

Infrared heating unit, infrared heating device and drying device

The present invention relates to an infrared heating unit, an infrared heating device, and a drying device.

In the past, an infrared heating unit has been known which emits infrared rays to heat a heated object such as a coating film. For example, Patent Document 1 discloses an infrared heater including a rod-shaped heating element made of carbon or ruthenium carbide which emits infrared rays during heating, and a tube made of translucent alumina ceramic which air-tightly accommodates the heating element. Protective tube. The protective tube has a total transmittance of 80% or more for electromagnetic waves having a wavelength of 0.4 to 6 μm.

Advanced technical literature Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2006-294337

However, in the above-described infrared heating unit, it is desirable to adjust the emission wavelength of the electromagnetic wave emitted to the object to be heated, depending on the type of the object to be heated or the time elapsed in the heating step of the object to be heated, and The radiant energy of the object to be heated is input. For example, there is a case where the radiation energy of the object to be heated is maintained at a certain level while the radiation wavelength is adjusted, or the object to be heated is placed. The radiation energy is maintained while maintaining a certain amount of energy. However, when the temperature of the heating element is changed by, for example, adjusting the emission wavelength of the electromagnetic wave emitted from the heating element, the radiation energy emitted from the heating element also changes, and it is difficult to adjust the two.

In order to solve the above problems, the present invention has a main object of being able to adjust the radiation wavelength and radiation energy of an object to be heated, respectively.

An infrared heating unit according to the present invention includes: a heating element that emits an electromagnetic wave containing infrared rays when heated, and is rotatable about a predetermined rotation axis, and has a shape that is externally viewed when viewed from a predetermined direction perpendicular to the rotation axis. The area of radiation varies with this revolution.

The infrared heating unit of the present invention is rotated by the heat generating body so that the radiation area of the electromagnetic wave on the outer surface changes when viewed from a predetermined direction perpendicular to the rotating shaft. That is, for example, the radiation area on the outer surface of the heat generating body can be changed independently of the change in the radiation wavelength emitted by the heat generating body due to the temperature change of the heat generating body. Further, when the radiation area on the outer surface changes, the radiation energy of the electromagnetic wave radiated from the heating element in a predetermined direction changes. Therefore, the radiation energy (for example, the peak wavelength of electromagnetic waves or the wavelength range of electromagnetic waves) is adjusted while maintaining the radiation energy of the object to be heated placed in a predetermined direction, or the radiation wavelength of the object to be heated is maintained constant. At the same time, the radiation energy and the like are adjusted, and the radiation wavelength and the radiation energy for the object to be heated can be adjusted separately. The infrared heating unit of the present invention may also have a tubular member that allows at least a portion of the infrared rays to penetrate and surround the heat generating body. Here, the "predetermined direction perpendicular to the rotation axis" may also be referred to as "first direction".

In the infrared heating unit of the present invention, when the heat generating body is viewed from a cross section perpendicular to the rotating shaft, the radiating surface of the electromagnetic wave may have an elliptical shape or a polygonal shape having a longitudinal direction and a short side direction. In this way, a relatively simple shape can be used, so that the heating element is "a shape in which the radiation area of the electromagnetic wave on the outer surface changes with the rotation when viewed from a predetermined direction perpendicular to the rotation axis".

The infrared heating unit of the present invention may include an infrared absorbing body capable of absorbing at least a part of the infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and in a direction other than the predetermined direction. In this way, the infrared ray absorbing body can suppress the infrared rays from the heat generating body in a direction other than the predetermined direction, and the radiant energy is indirectly applied to the object to be heated, and is reflected by another object, and is heated from the heat generating body to a predetermined direction. Things and so on. Further, when it is desired to reduce the radiation area on the external surface of the heat generating body to reduce the radiation energy to the object to be heated, if the radiation energy of the object to be heated is indirectly applied, the decrease in the radiation energy may not be sufficient. By providing the infrared ray absorbing body, it is possible to suppress the occurrence of such a situation, and it is possible to further adjust the radiant energy by the rotation of the heating element. Here, the term "capable of absorbing at least a portion of the infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and in a direction other than the predetermined direction" means not only absorption from the heat generating body but also perpendicular to the rotation axis in a predetermined direction. In the case of the infrared rays radiated in the omnidirectional direction, the infrared rays radiated from the heat generating body to a portion perpendicular to the rotation axis and in a direction other than the predetermined direction may be absorbed. In addition, the term "capable of absorbing at least a portion of the infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and in a direction other than the predetermined direction" means not only absorption of all ranges of infrared rays but also absorption of infrared rays. The condition of a part of the range, or the absorption of infrared rays of a certain wavelength Part of it and let a part of it penetrate.

In the infrared heating unit of the present invention having an infrared absorber, the infrared absorber can absorb infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and perpendicular to the predetermined direction. At least part of it. In the case where the radiation area on the outer surface viewed in a predetermined direction is reduced by the rotation of the heating element, it is easy to increase the radiation area on the outer surface viewed from the direction perpendicular to the rotation axis and perpendicular to the predetermined direction. Therefore, the infrared absorber can absorb the infrared rays radiated in the direction, thereby improving the effect of suppressing the indirect application of the radiation energy to the object to be heated disposed in the predetermined direction. Here, the "direction perpendicular to the rotation axis and perpendicular to the predetermined direction" may also be referred to as "second direction".

In this case, the infrared ray absorbing body includes an infrared absorbing surface capable of absorbing at least a portion of infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and perpendicular to the predetermined direction, wherein the predetermined direction is lower When the direction is the upper direction opposite to the predetermined direction, the range of the vertical direction of the infrared absorbing surface may include the range of the vertical direction of the heating element. This can improve the effect of suppressing the indirect application of the radiant energy to the object to be heated disposed in the predetermined direction. Here, the "the range in which the infrared absorption surface is in the vertical direction includes the range in which the heat generating element is present in the vertical direction" also includes the range in which the infrared absorption surface is present in the vertical direction and the range in which the heat generating element is in the vertical direction. Happening. In addition, the so-called "upward direction" or "downward direction" here is a name for distinguishing directions. For example, the "upward direction" is not limited to the vertical direction, and the "down direction" is not limited to the vertical direction.

Infrared addition of the present invention having an infrared absorber In the thermal unit, the infrared absorbing body is absorbing the electromagnetic wave, and the at least one portion of the infrared ray emitted from the heat generating body toward a direction perpendicular to the rotation axis and perpendicular to the predetermined direction and the direction toward the other side At least a portion of the emitted infrared light. This can improve the effect of suppressing the indirect application of the radiant energy to the object to be heated disposed in the predetermined direction. In this case, the infrared heating unit of the present invention may be disposed in an infrared absorber disposed in a direction perpendicular to the rotation axis and perpendicular to the rotation direction, and disposed in the heat generating body. The infrared absorbing body in which the rotating shaft is perpendicular and the other direction perpendicular to the predetermined direction is disposed as an individual member or an integral member.

In the infrared heating unit of the present invention having an infrared absorber, the infrared absorber has a fluid flow path through which a fluid can flow. In this way, the infrared absorber can be cooled by circulating the fluid in the fluid flow path. Thereby, for example, it is possible to suppress the radiation absorber itself from being a radiation source of infrared rays. Further, for example, the heat of the fluid is used for other purposes (for example, preheating of hot air used in a drying device having an infrared heating unit), and energy that cannot be used for heating the object to be heated by the heating element can be effectively utilized. In this case, the infrared heating unit may be provided with a fluid supply unit to supply a fluid having a temperature lower than the infrared absorber to the fluid flow path.

The infrared heating unit of the present invention includes an infrared reflecting body capable of reflecting at least a portion of the infrared rays radiated in a direction opposite to the predetermined direction when viewed from the heat generating body, wherein the heat generating body is The shape is such that the radiation area of the electromagnetic wave on the outer surface when the heating element is viewed from the predetermined direction and the heating element are viewed from a direction opposite to the predetermined direction The sum of the radiation areas of the electromagnetic waves on the outer surface changes with the rotation. In this way, the infrared ray reflects the infrared ray, so that the infrared ray radiated from the heat generating body in a predetermined direction and the infrared ray radiated in a direction opposite to the predetermined direction reach the object to be heated disposed in a predetermined direction when viewed from the heat generating body. Therefore, it is possible to cause the radiation energy from the heat generating body to reach the object to be heated more efficiently. Further, the heat generating body is directly changed from the heat generating body by the sum of the radiation area on the outer surface when viewed from a predetermined direction and the outer surface of the radiation area when viewed from a direction opposite to the predetermined direction. The sum of the radiant energy of the object to be heated that has reached a predetermined direction and the amount of radiant energy that is reflected by the infrared ray reflector also changes with the slewing. Therefore, even if there is an infrared reflector, the adjustment of the radiation energy can be performed by the rotation of the heat generating body. Further, the shape of the heat generating body may be such that when the heat generating body is viewed from the predetermined direction, the radiation area of the electromagnetic wave on the outer surface when viewed from the predetermined direction and the heat generating body viewed from a direction opposite to the predetermined direction The radiation area of the electromagnetic wave on the outer surface changes toward the same tendency (the direction of the increase and decrease of the radiation area accompanying the rotation is the same). Further, in the heating element, the shape of the radiating surface of the electromagnetic wave may be a shape symmetrical with respect to the center of the rotating shaft as a central axis. Alternatively, in the heating element, the shape of the radiating surface of the electromagnetic wave may be a plane symmetrical shape having a plane of symmetry passing through the plane of the rotating shaft.

The infrared heating unit of the present invention may include a plurality of the heat generating bodies configured to be parallel to each other and arranged in a direction perpendicular to the rotating shaft and perpendicular to the predetermined direction. In this aspect, the sum of the radiation areas on the outer surface of the electromagnetic wave when the plurality of heating elements are viewed from a predetermined direction changes with the rotation of the heating element, whereby the radiation wavelength and the radiation energy of the object to be heated can be individually adjusted. the amount. Further, since a plurality of the heat generating bodies are arranged side by side in a direction perpendicular to the rotation axis and perpendicular to the predetermined direction, the adjacent heat generating bodies can be heated to each other by the infrared rays emitted by themselves. Thereby, the energy required to heat the heating element can be reduced as compared with the case where two infrared heating units having one heating element are disposed.

The infrared heating unit of the present invention comprises a tubular member which absorbs infrared rays having a wavelength exceeding 3.5 μm and covers the heat generating body. Thereby, it is possible to increase the ratio of the infrared rays having a wavelength of 3.5 μm or less among the electromagnetic waves reaching the object to be heated while adjusting the emission wavelength of the electromagnetic wave radiated from the heating element. Further, in the case where the infrared heating unit includes the infrared absorber and the infrared reflector, the tubular member may cover not only the heating element but also at least one of the infrared absorber and the infrared reflector, and the infrared absorber may be used. And the infrared reflector is disposed outside the tubular member (not covered by the tubular member). Further, the tubular member may be a material that transmits infrared rays having a wavelength of 3.5 μm or less. Further, the infrared heating unit of the present invention may include a plurality of tubular members configured to be concentric. For example, it may have an inner tubular member covering the heat generating body and an outer tubular member covering the heat generating body and the inner tubular member as a tubular member.

An infrared heating device comprising: an infrared heating unit according to any one of the above aspects; a rotating assembly that rotates the heating element around the rotating shaft; a power supply unit that supplies electric power to the heating element; and a corresponding relationship memory component Correspondence between the following values: the value of the radiation wavelength of the heating element, the value of the rotation position of the heating element, and the a value derived from the heat generating body and reaching a radiation energy of the object to be heated disposed in the predetermined direction when viewed from the heat generating body; and an input device capable of inputting information about the radiation wavelength and information about the radiation energy; The swing position obtaining device acquires, based on the information about the radiation wavelength that has been input, the information about the radiation energy that has been input, and the correspondence relationship, the radiation element and the radiation energy corresponding to the input heat radiation body a value of a swing position; a control unit that controls the swing assembly and the power supply assembly, wherein the heat generating body is rotated by the swing assembly such that the heat generating body is located at a swing position indicated by the acquired value, by the power The supply unit supplies electric power to the heat generating body such that the heat generating body emits electromagnetic waves of the above-described input radiation wavelength.

Since the infrared heating device of the present invention includes the infrared heating unit of any of the above aspects, the effect of the infrared heating unit of the present invention can be obtained, and for example, the effects of the radiation wavelength and the radiation energy of the object to be heated can be adjusted. Further, the infrared heating device of the present invention stores a correspondence relationship between the value of the radiation wavelength of the heating element, the value of the rotation position of the heating element, and the emission from the heating element and the arrangement from the heat generation. The value of the radiant energy of the object to be heated in the predetermined direction when the body is viewed. Then, based on the correspondence relationship and the information on the radiation wavelength and the radiation energy that have been input, the value regarding the rotational position of the heating element is obtained. Then, the electric power supplied to the heating element and the rotation of the heating element are controlled so that the heating element is located at the turning position indicated by the acquired value, and the heating element emits the electromagnetic wave of the radiation wavelength that has been input. Therefore, just input the information about the desired radiation wavelength and radiation energy. It is possible to appropriately adjust the supply power or the rotational position for obtaining the desired radiation wavelength and radiation energy. Here, the "value of the radiation wavelength" may be a value of the radiation wavelength itself (for example, a peak wavelength of an electromagnetic wave or a wavelength range of an electromagnetic wave), but is not limited thereto, and may be a temperature of a heating element or a heating element. The value of the radiation wavelength can be derived from the power supply, the output of the heating element (power consumption), and the like. The same is true of "Information on the wavelength of radiation". The value of the rotation position is not limited to the value of the rotation position of the heating element (for example, the rotation angle), and the radiation area on the outer surface of the electromagnetic wave when the heating element is viewed from a predetermined direction can be used to derive the rotation position. value. The "value of the radiant energy" is not limited to the value of the radiant energy itself, and may be a value at which the radiant energy can be derived. The same is true of "Information on Radiation Energy." In addition, "the value of the radiation wavelength" and "the information about the radiation wavelength" may be the same thing or different things. For example, "the value of the radiation wavelength" is the temperature of the heating element, and "the information about the radiation wavelength" is the power supply to the heating element. The same is true for "the value of the radiation energy" and "the information about the radiation energy". In addition, the input component can input information about the radiation wavelength and information about the radiation energy by the user.

The drying device of the present invention includes any one of the following to dry the object to be heated in the predetermined direction when viewed from the heat generating body: the infrared heating unit of the present invention according to any of the above aspects; and Infrared heating device.

The drying apparatus of the present invention includes the infrared heating unit of the present invention according to any of the above aspects or the infrared heating device of the present invention, whereby the effects of these devices can be obtained, for example, the radiation to the object to be heated can be separately adjusted. The effect of wavelength and radiant energy. In addition, the drying device of the present invention, The apparatus may be dried while conveying the object to be heated, or may be dried while the object to be heated is stopped.

10‧‧‧Drying device

12‧‧‧ furnace body

12a‧‧‧ Space

13‧‧‧ front end

14‧‧‧ rear end face

15, 16‧‧‧ openings

17, 18‧‧‧ reel

19‧‧‧Transportation

20‧‧‧ gas supply device

21‧‧‧Air supply fan

22‧‧‧ tube structure

23‧‧‧Air supply

25‧‧‧Exhaust device

26‧‧‧Exhaust fan

27‧‧‧ tube structure

28‧‧‧Exhaust port

30, 130‧‧‧ Infrared heating unit

31, 131‧‧‧ Infrared heater

32, 132, 232‧ ‧ heating elements

32a‧‧‧Wire

33‧‧‧Connecting terminal

34‧‧‧Axis

35‧‧‧ bearing

37, 137‧‧‧ internal management

38, 138‧‧‧ outside management

39‧‧‧ Fluid flow path

40‧‧‧Cap

42, 43‧‧‧Cylinder

44‧‧‧ Cover

45‧‧ ‧ socket

47‧‧‧Wiring lead-out

48‧‧‧ Fluid inlet and outlet

49‧‧‧temperature sensor

50‧‧‧Power supply

52‧‧‧1st fluid supply source

54‧‧‧2nd fluid supply source

56‧‧‧Motor

57‧‧‧Drive shaft

60,160‧‧‧reflector

70, 75‧‧‧Infrared absorption board

71, 76‧‧‧ fluid inlet and outlet

72, 77‧‧‧ fluid flow path

80‧‧‧ tablets

82‧‧·coating film

90‧‧‧ Controller

91‧‧‧CPU

92‧‧‧Flash memory

93‧‧‧ Correspondence information

94‧‧‧RAM

95‧‧‧Rotary Position Acquisition Department

96‧‧‧Control Department

98‧‧‧Operator panel

236a‧‧‧1st ditch

236b‧‧‧2nd ditch

R, R2‧‧‧ shaft

Fig. 1 shows a longitudinal sectional view of the drying device 10.

Fig. 2 is a cross-sectional view along the line A-A of the cross section of the infrared heating unit 30 of Fig. 1.

Fig. 3 is an explanatory view showing the heating element 32.

Fig. 4 is an explanatory diagram showing the relationship between the peak wavelength of the electromagnetic wave emitted from the heating element 32, the rotation angle of the heating element 32, and the radiation energy to the coating film 82.

Fig. 5 is a conceptual diagram of the correspondence data 93.

Fig. 6 is a flow chart showing an example of a heating element control program.

Fig. 7 is a cross-sectional view showing the infrared heating unit 130 of the modification.

Fig. 8 is a perspective view showing the heating element 232 of the modification.

Next, an embodiment of the present invention will be described using the drawings. Fig. 1 shows a longitudinal sectional view of the drying device 10. The drying device 10 is a device for drying the coating film 82 applied to the sheet 80 as a drying target by using infrared rays, and includes a furnace body 12, a gas supply device 20, an exhaust device 25, an infrared heating unit 30, and Controller 90. Further, the drying device 10 includes a reel 17 that is disposed in front of the furnace body 12 (on the left side of FIG. 1), and a reel 18 that is disposed behind the furnace body 12 (on the right side of FIG. 1). The drying device 10 is configured as a roll-to-roll drying furnace in which the sheet 80 on which the coating film 82 is formed is continuously conveyed by the reels 17 and 18 and dried.

The furnace body 12 is a device for drying the coating film 82. The furnace body 12 is a heat insulating structure formed into a substantially rectangular parallelepiped shape, and has a space 12a having an internal space and a front end face 13 and a rear end face 14 respectively formed in the furnace body as openings 15 and 16 from the outside to the space 12a. . The length of the furnace body 12 from the front end face 13 to the rear end face 14 is, for example, 2 to 10 meters. A transport path 19 is provided in the furnace body 12 as a passage from the opening 15 to the opening 16. The conveyance path 19 penetrates the furnace body 12 in the horizontal direction. The sheet 80 coated with the coating film 82 on one side passes through the conveying path 19.

The air supply device 20 is a device that supplies (steams) hot air to the surface of the sheet body 80 so as to be dried by the coating film 82 in the furnace body 12. The air supply device 20 includes an air supply fan 21, a pipe structure 22, and an air supply port 23. The air supply fan 21 is attached to the pipe structure 22, and is a device that heats a fluid such as air to hot air and supplies it to the inside of the pipe structure 22. Further, in the present embodiment, the air supply fan 21 supplies a second fluid, which will be described later, to the inside of the pipe structure 22. The air supply fan 21 can adjust the flow rate or temperature of the hot air. The temperature of the hot air can be adjusted, for example, in the range of 40 ° C to 200 ° C. The pipe structure 22 is a device that serves as a passage for hot air from the air supply fan 21. The pipe structure 22 forms a passage from the top of the furnace fan 21 to the inside of the furnace body 12 and then to the inside of the furnace body 12. The air supply port 23 serves as a supply port for the hot air from the air supply fan 21 to the furnace body 12. The air supply port 23 is provided at an end portion on the side of the opening 16 on the transport side of the sheet body 80 in the furnace body 12, and is horizontally opened toward the side of the opening 15 on the transport side. Thereby, the air supply device 20 supplies the hot air to the opposite direction (the left side in FIG. 1) in the transport direction of the sheet body 80.

The exhaust device 25 is a device that discharges the ambient gas in the furnace body 12. The exhaust device 25 includes an exhaust fan 26, a pipe structure 27, and an exhaust port 28. The exhaust port 28 is provided at an end portion on the side of the opening 15 of the sheet body 80 in the furnace body 12, and is horizontally opened toward the opening 16 side of the carry-out side. The exhaust port 28 is attached to the pipe structure 27, and the ambient gas in the furnace body 12 (mainly the hot air blown by the air blown by the air supply device 20 along the surface of the coating film 82) is sucked into the pipe structure. Within body 27. The pipe structure 27 is a structure that serves as a flow path of the ambient gas from the exhaust port 28 to the exhaust fan 26. The pipe structure 27 forms a passage that passes through the exhaust port 28 from the top of the furnace body 12 to the exhaust fan 26. The exhaust fan 26 is attached to the pipe structure 27 such that the ambient gas inside the pipe structure 27 is discharged.

The infrared heating unit 30 is a device that irradiates the coating film 82 in the furnace body 12 with infrared rays, and a plurality of infrared heating units 30 are mounted in the vicinity of the top of the space 12a in the furnace body 12. In the present embodiment, a plurality of (six in the present embodiment) infrared heating units 30 are arranged evenly from the front end surface 13 side to the rear end surface 14 side. The plurality of infrared heating units 30 are all of the same configuration and are mounted such that their longitudinal directions intersect perpendicularly to the conveying direction of the coating film 82. The configuration of one infrared heating unit 30 will be described below.

Fig. 2 is a cross-sectional view along the line A-A of the cross section of the infrared heating unit 30 of Fig. 1. As shown in FIGS. 1 and 2, the infrared heating unit 30 includes an infrared heater 31, infrared absorption plates 70 and 75, and a reflection plate 60 (only shown in FIG. 1).

The infrared heater 31 includes a heating element 32 made of a nickel-chromium alloy, an inner tube 37 that is provided outside the heating element 32 and that surrounds the heating element 32, and is disposed outside the inner tube 37 and formed to surround the inner tube 37. The outer tube 38 and the cap 40 are attached to both ends of the above element (Fig. 2). Further, the infrared heater 31 has a temperature sensor 49 that detects the surface temperature of the outer tube 38 (refer to the second Figure). Further, the inner tube 37 and the outer tube 38 are arranged concentrically, and the heating element 32 is located at the center of the circle.

Fig. 3 is an explanatory view showing the heating element 32. In addition, the third (a) is an explanatory view showing a state in which the heating element 32 is viewed from the rear (lower in FIG. 2), and the third (b) is a perspective view showing the vicinity of the left end of the heating element 32. The heating element 32 is a device that emits electromagnetic waves containing infrared rays when heated, and as shown in Fig. 3, the strip-shaped nickel-chromium (Ni-Cr) alloy is wound into a spiral shape. The heating element 32 is configured to be rotatable about the rotation axis R by the driving force of the motor 56 (second drawing). The heating element 32 is formed such that the radiating surface of the electromagnetic wave (the surface of the heating element 32) is an elliptical shape when viewed from a cross section perpendicular to the rotation axis R (first and third figures). Further, the rotation axis R is an axis parallel to the left-right direction (the horizontal direction in FIG. 2), and is located at the center of the ellipse of the cross section of the heating element 32. Therefore, the shape of the radiating surface of the electromagnetic wave of the heating element 32 is such that the rotation axis R is symmetrical with respect to the center of the central axis. Further, the shape of the radiating surface of the electromagnetic wave of the heating element 32 may be a plane symmetrical shape that is a plane of symmetry with a plane passing through the rotating shaft R (for example, a plane in the front-rear direction or a plane in the vertical direction). By forming such a shape, the heat generating body 32 has a shape in which the radiation area of the electromagnetic wave on the outer surface changes as viewed from a predetermined direction (the lower direction in the present embodiment) perpendicular to the rotation axis R.

As shown in FIGS. 2 and 3, the connection terminal 33 is inserted into both ends of the heating element 32 in the direction of the rotation axis. Further, the connection terminals 33 at both ends are connected to the cylindrical shaft body 34, respectively. The connection terminals 33 at both ends are made of a conductive material such as metal. The shaft bodies 34 at both ends are made of, for example, an insulating material and are respectively supported by bearings 35. The bearing 35 is composed of a ball bearing, which is respectively disposed on the cap 40 The inner socket 45 is supported (Fig. 2) to support the shaft 34 in a rotatable manner. Further, the bearing 35 is not limited to the ball bearing as long as the shaft body 34 can be supported in a rotatable manner. The connection terminals 33 at both ends are connected to the power supply source 50 disposed outside the furnace body 12 via the electric wires 32a, and when the electric power supply source 50 supplies electric power to the heating element 32 to heat the heating element 32, the heating element 32 emits Electromagnetic waves containing infrared rays. Further, the shaft body 34 is connected to a motor 56 that is disposed inside the furnace body 12 and configured as a servo motor such as a stepping motor, through the drive shaft 57 that penetrates the cap 40 in the direction of the rotation shaft. Between the motor 56 and the drive shaft 57, or between the drive shaft 57 and the shaft body 34, it may be connected by a cylindrical coupling (not shown). When the rotational driving force of the motor 56 is output, the heating element 32, the connection terminal 33, and the shaft body 34 are integrated and rotated around the rotation axis R. Further, since the electric wire 32a can be bent, since the length of the wiring in the cap 40 is sufficient, the electric conduction between the electric wire 32a and the connection terminal 33 can be maintained even if the connection terminal 33 is rotated. Therefore, electric power can be supplied from the electric power supply source 50 to the heating element 32 while the heating element 32 is rotated by the driving force of the motor 56. In addition, the electric wire 32a connected to the connection terminal 33 is airtightly taken out to the outside through the wiring lead portion 47 provided in the cap 40, and is connected to the power supply source 50. As shown in FIG. 2, the cap 40 is integrally formed by a disk-shaped cover 44 and cylindrical portions 42 and 43 which are erected on the cover 44. The left and right ends of the inner tube 37 and the outer tube 38 are fixed to the cylindrical portions 42, 43, respectively.

The inner tube 37 and the outer tube 38 are tubes having a circular cross section that surrounds the heating element 32, and are formed of an infrared ray transmissive material that transmits at least infrared rays among electromagnetic waves radiated from the heating element 32. Such infrared ray transmissive materials for the inner tube 37 and the outer tube 38 are, for example, germanium, sapphire, sapphire, Calcium fluoride, barium fluoride, zinc selenide, zinc sulfide, sulfide glass, transmissive alumina ceramics, and quartz glass that can transmit near infrared rays. In the present embodiment, the inner tube 37 and the outer tube 38 are formed of a translucent alumina ceramic. Further, the space between the inner tube 37 and the outer tube 38 is a fluid flow path 39 through which a first fluid of a fluid such as air flows. The inner tube 37 and the outer tube 38 can be cooled to a predetermined upper limit or lower (for example, 200 ° C or lower) by the first fluid flowing through the fluid flow path 39.

The fluid flow path 39 is a space between the inner tube 37 and the outer tube 38, and the first fluid can flow through the fluid inlet and outlet 48 provided in the cap 40. The fluid inlet and outlet port 48 is connected to a first fluid supply source 52 disposed outside the furnace body 12. The first fluid supplied from the first fluid supply source 52 flows into the fluid flow path 39 from one of the fluid inlets and outlets 48, flows through the fluid flow path 39, and flows out from the other fluid inlet and outlet 48. The first fluid flowing through the fluid flow path 39 functions as a refrigerant, and directly reduces the temperature of the outer tube 38 outside the infrared heater 31 or the temperature of the inner tube 37 to an arbitrary temperature.

As shown in FIG. 1, the reflector 60 is a plate-shaped member disposed on the upper side viewed from the heat generating body 32. The length of the reflecting plate 60 in the front-rear direction (the horizontal direction in the first drawing) is longer than the outer diameter of the outer tube 38. As shown in Fig. 1, the reflecting plate 60 is formed so as to cover a region directly above the outer tube 38 in a cross-sectional view. In other words, the existence range of the reflection plate 60 in the front-rear direction includes the existence range of the heat generating body 32 or the outer tube 38 in the front-rear direction. In addition, the range in the left-right direction (near the paper surface of FIG. 1) and the depth direction of the reflector 60 includes the range in which the heating element 32 or the outer tube 38 exists in the left-right direction (the drawing is omitted). The reflector 60 is made of a material that reflects at least a portion of the infrared rays of the electromagnetic waves radiating upward from the heating element 32. form. The material of the reflecting plate 60 is a metal such as SUS304 or aluminum.

The infrared absorbing plates 70 and 75 are members of a substantially rectangular parallelepiped which are disposed on the front side and the rear side of the infrared heater 31, respectively, and sandwich the infrared heater 31 from the front-rear direction. The infrared absorbing plate 70 has a surface on the rear side (the right side in FIG. 1) which is an infrared absorbing surface that absorbs at least a part of the infrared ray among the electromagnetic waves emitted from the heating element 32. The infrared absorbing surface has a length in the vertical direction longer than the outer diameter of the outer tube 38. As shown in Fig. 1, it is formed in a region in which the outer tube 38 is covered in a cross section. In other words, the range in which the infrared absorption surface exists in the vertical direction includes the range in which the heating element 32 or the outer tube 38 exists in the vertical direction. Further, as shown in FIG. 2, the range of the left-right direction of the infrared ray absorbing plate 70 includes the range in which the heat generating body 32 or the outer tube 38 exists in the left-right direction. The infrared ray absorbing plate 70 is formed of an infrared absorbing material capable of absorbing at least a part of infrared rays among electromagnetic waves emitted from the heat generating body 32. The infrared absorbing material used for the infrared ray absorbing plate 70 is, for example, a Si-SiC composite material (yttrium-impregnated SiC) in which a porous body containing SiC is impregnated with yttrium. In the present embodiment, the infrared ray absorbing plate 70 is formed of a material that absorbs electromagnetic waves of almost all (for example, 80% or more) infrared ray regions (wavelengths of 0.7 μm to 8 μm). The infrared absorbing plate 70 has a hollow interior, and the internal space serves as a fluid flow path 72. The fluid flow path 72 passes through the two fluid inlets and outlets 71 provided in the infrared absorption plate 70, and allows the second fluid to flow. The second fluid may be a fluid such as air or a fluid such as water. In the present embodiment, the second fluid is air. The fluid inlet and outlet 71 is connected to a second fluid supply source 54 disposed outside the furnace body 12. The second fluid supplied from the second fluid supply source 54 flows into the fluid flow path 72 from the fluid inlet and outlet 71, and flows through the fluid flow path 72, and then flows from the other. The fluid inlet and outlet 71 on one side flows out. The second fluid that flows through the fluid flow path 72 functions as a refrigerant that reduces the temperature of the infrared absorbing plate 70 that is heated to absorb infrared rays. Further, the infrared ray absorbing plate 70 can be cooled to 200 ° C or lower by the second fluid flowing through the fluid flow path 72. Further, the fluid inlet and outlet 71 on the other side is connected to the air supply fan 21. Therefore, the air supply fan 21 directly uses or reheats the second fluid heated by the fluid flow path 72 and supplies it to the furnace body 12 as hot air.

The infrared absorption plate 75 has a fluid inlet and outlet 76 and a fluid flow path 77 formed inside. The infrared absorbing plate 75 is disposed on the opposite side of the infrared absorbing plate 70 so as to sandwich the infrared ray heater 31, and is configured such that the infrared absorbing plate 70 is symmetrical with respect to a plane symmetrical with respect to a virtual plane including the vertical direction of the rotating shaft R. Other features are the same as those of the infrared ray absorbing plate 70, and thus the description thereof will be omitted.

The sheet body 80 is not particularly limited, and it may be a metal sheet such as aluminum or copper. The sheet body 80 is not particularly limited, and may have a thickness of 10 to 100 μm and a width of 200 to 1000 mm. In addition, the coating film 82 on the sheet body 80 is, for example, an object for drying an electrode for a battery, and is not particularly limited, and may be a coating film which is, for example, an electrode for a lithium ion secondary battery. The coating film 82 is, for example, a material obtained by applying an electrode material paste obtained by kneading an electrode material (a positive electrode active material or a negative electrode active material), a binder, a conductive material, and a solvent to the sheet body 80. The thickness of the coating film 82 is not particularly limited, and may be, for example, a thickness of 20 to 1000 μm.

The controller 90 is configured as a microprocessor centered on the CPU 91, and includes a flash memory 92 for storing various processing programs or various materials, a RAM 94 for temporarily storing data, and an internal communication unit not shown in the communication panel 98. Information interface (I/F). The flash memory 92 memorizes the correspondence data 93. The correspondence relationship data 93 is a correspondence relationship between the value of the radiation wavelength of the heating element 32, the value of the rotation position of the heating element 32, and the time when it is emitted from the heating element 32 and is disposed when viewed from the heating element 32. The value of the radiant energy of the object to be heated (coating film 82) in the predetermined direction will be described later.

The controller 90 outputs a control signal to the air supply fan 21 or the exhaust fan 26, and controls the temperature and the amount of the hot air blown from the air supply port 23, or the amount of the exhaust gas discharged from the exhaust port 28 by the environment of the space 12a. Further, the controller 90 inputs the temperature of the outer tube 38 detected by the temperature sensor 49 of the thermocouple, or outputs a control signal to the on-off valve and the flow rate adjustment valve not shown in the figure of the first fluid supply source 52, The flow rate of the first fluid flowing through the fluid flow path 39 of the infrared heating unit 30 is controlled such that the outer tube 38 does not exceed a predetermined upper limit value. Further, the controller 90 outputs a control signal to the on-off valve and the flow rate adjustment valve (not shown) of the second fluid supply source 54 to individually control the second fluids in the fluid flow paths 72 and 77 of the infrared absorption plates 70 and 75. Traffic. Furthermore, the controller 90 outputs a control signal for controlling the magnitude of the power supplied from the power supply source 50 to the heat generating body 32 to the power supply source 50 to individually control the temperature or output of the heat generating body of the infrared heating unit 30. Further, the controller 90 outputs a control signal to the motor 56 to control the rotational position of the heat generating body 32. Further, the controller 90 controls the rotation speed of the reels 17, 18, whereby the passage time of the sheet body 80 and the coating film 82 in the furnace body 12 or the tension applied to the sheet body 80 and the coating film 82 can be adjusted. The controller 90 inputs an operation signal generated corresponding to the operation of the operation panel 98, or outputs a display instruction to the operation panel 98.

In addition, as shown in FIG. 1, the controller 90 includes a swivel position. The function block of the part 95, the control unit 96, and the like. The rotation position obtaining unit 95 functions to acquire the radiation wavelength and the radiation energy corresponding to the input, based on the information on the radiation wavelength and the radiation energy of the heating element 32 input through the operation panel 98 and the correspondence relationship data 93. The value of the rotational position of the heating element 32. The control unit 96 functions to control the motor 56 and the power supply source 50, and the heating unit 32 is rotated by the motor 56 so that the heating element 32 is located at the turning position indicated by the value obtained by the turning position acquiring unit 95, and is supplied by electric power. The source 50 supplies electric power to the heating element 32 such that the heating element 32 emits electromagnetic waves of a radiation wavelength input through the operation panel 98. Further, the swing position acquisition unit 95 and the control unit 96 may be configured as hardware, or may be configured such that the CPU 91 executes a program stored in the flash memory 92 to realize its function.

The operation panel 28 includes a display unit and an operation unit configured to include the display unit. The display unit is configured as a touch-sensitive liquid crystal display, and displays a selection/setting button for selecting a menu or an item, a numeric button for inputting various numerical values such as a radiation wavelength and a radiation energy of the heating element 32, and a start button for starting a drying process. And accepting a touch operation to transmit an operation signal based on the touch operation to the controller 90. Further, when a display command from the controller 90 is received, an image, a character, a numerical value, or the like based on the display command is displayed on the display unit.

Next, the operation of the drying device 10 configured as described above will be described. First, the operation of the infrared heating unit 30 will be described. Fig. 4 is an explanatory diagram showing the relationship between the emission wavelength (peak wavelength) of the electromagnetic wave emitted from the heating element 32, the rotational position (rotation angle) of the heating element 32, and the radiation energy to the coating film 82. 4(a) is an explanatory view showing a case where the rotation angle of the heating element 32 is 0 degrees, and FIG. 4(b) is an explanatory view showing a case where the rotation angle of the heating element 32 is 90 degrees. another In the present embodiment, the position in which the longitudinal direction of the cross section of the heat generating body 32 (the cross section perpendicular to the rotation axis R) is horizontal (perpendicular to the vertical direction) is the reference of the turning angle (the turning angle is 0 degree).

First, the relationship between the peak wavelength and the radiation energy when the rotation angle is 0 degrees will be described. The heating element 32 changes its output due to the electric power supplied from the electric power supply source 50, and changes the temperature of the heating element 32 itself. Therefore, the peak wavelength of the electromagnetic wave emitted from the heating element 32 also changes. Specifically, when the output of the heating element 32 is larger (that is, the temperature of the heating element 32 is higher), the peak wavelength of the emitted electromagnetic wave is smaller. Further, as the output of the heat generating body 32 is larger, the radiant energy emitted from the heat generating body 32 and reaching the coating film 82 is increased. For example, as shown in Fig. 4(a), when 25% of the output of the heating element 32 is maximum, an electromagnetic wave having a peak wavelength of about 4 μm is radiated, and when the output of the heating element 32 is maximum (100%), the peak wavelength is radiated. An electromagnetic wave of about 3 μm. In addition, when the output of the heating element 32 is 100% as compared with the case where the output of the heating element 32 is 25%, the radiation energy from the heating element 32 to the coating film 82 becomes large. In this way, when only one of the peak wavelength and the radiation energy is changed without adjusting the rotation angle of the heating element 32 and only the output is adjusted, the other one also changes.

However, in the infrared heating unit 30 of the present embodiment, when the heating element 32 is rotated, the radiation area on the outer surface of the electromagnetic wave when the heating element 32 is viewed from below is changed. Thereby, the form factor of the surface of the coating film 82 disposed under the heating element 32 (especially the surface of the coating film 82 in the furnace body 12) on the radiation surface of the heating element 32 (hereinafter referred to as the form factor F) change. For example, as shown in Fig. 4(b), when the rotation angle of the heating element 32 is 90 degrees as compared with the case where the rotation angle is 0 degree, the appearance of the heating element 32 is viewed from below. The shot area becomes smaller, and the shape factor F also becomes smaller. Therefore, even if the output of the heating element 32 is also 100%, the radiation energy reaching the coating film 82 by the heating element 32 is smaller than when the rotation angle is 0 degrees (refer to the solid line in the lower drawing of Fig. 4(b)). As described above, in the infrared heating unit 30, the heat generating body 32 is rotated and the radiation area on the outer surface is changed (change of the form factor F), whereby the output of the heat generating body 32 can be prevented, for example, without changing the heat generating body 32. The radiant energy reaching the coating film 82 is changed by the temperature and the peak wavelength, and the like. In addition, the radiation area on the outer surface of the heat generating body 32 can be changed to suppress the change in the radiation energy as the output of the heat generating body 32 changes. For example, in the present embodiment, the electromagnetic wave of the heating element 32 when the output angle is 25% and the turning angle is 0 degrees (the broken line in the lower part of Fig. 4(b)), and when the output is 100% and the turning angle is 90 degrees. The electromagnetic wave of the heating element 32 (the solid line in the lower part of Fig. 4(b)) has almost the same radiation energy reaching the coating film 82, and the peak wavelength of the heating element or the wavelength range of the electromagnetic wave is only 1 μm.

Further, since the infrared heating unit 30 has the infrared absorbing plates 70 and 75, the arrangement or size of the infrared absorbing plates 70 and 75 also affects the value of the form factor F corresponding to the rotational position of the heating element 32. In addition, since the infrared heating unit 30 includes the inner tube 37, the outer tube 38, the reflecting plate 60, and the infrared absorbing plates 70 and 75, the arrangement, size, reflected wavelength range, and absorbed wavelength range of these elements are also The radiant energy from the heating element 32 to the coating film 82 is affected. For example, the radiant energy from the heating element 32 to the coating film 82 is reflected by the inner tube 37, the outer tube 38, the infrared absorbing plates 70 and 75 among the electromagnetic waves emitted from the heating element 32, and reflected by the reflecting plate 60. Change in composition. Further, in the present embodiment, in consideration of these effects, the value indicating the radiation wavelength of the heating element 32 and the rotation position of the heating element 32 will be described. The value of the correspondence between the value and the value of the radiant energy emitted from the heating element 32 and reaching the object to be heated (coating film 82) disposed in the direction from the heating element 32 is previously stored in the flash memory. The body 92 serves as the correspondence information 93. Fig. 5 is a conceptual diagram of the correspondence data 93. As shown in the figure, in the correspondence data 93, the output of the heating element 32 is used as the value of the radiation wavelength of the heating element 32, and the rotation angle of the heating element 32 is used as the value of the rotation position of the heating element 32, and these are used. The correspondence between the data and the radiant energy reaching the coating film 82 is stored as a map. It can also be seen from Fig. 5 that when the rotation angle of the heating element 32 is changed between -90 degrees and 90 degrees, the radiant energy reaching the coating film 82 is maximum at a rotation angle of 0 degrees, and at a rotation angle of -90 degrees or 90 degrees is the smallest. Further, even at the same rotation angle, the output of the heating element 32 is larger (that is, the higher the temperature of the heating element 32 is, the shorter the peak wavelength of the electromagnetic wave emitted from the heating element 32), the more the radiation energy reaching the coating film 82 is. Big. In addition, in the fifth diagram, the correspondence relationship when the output of the heating element 32 is 25%, 50%, 75%, or 100% is shown. However, the correspondence data 93 also includes the case where the output of the heating element 32 is other than the above. Correspondence relationship. In the present embodiment, the corresponding relationship data 93 stores a correspondence relationship of 1% in the range of 10 to 100% of the output of the heating element 32. The correspondence data 93 can be obtained in advance by, for example, an experimental method, or can be derived in advance by calculation or the like by calculation. Further, in the present embodiment, the cross-sectional shape of the radiating surface of the heat generating element 32 is symmetrical with respect to the ellipse, and the turning angle is changed between -90 and 90 degrees, but the turning angle may be -180 degrees. Change between ~180 degrees.

Further, the radiant energy reaching the coating film 82 (the vertical axis of FIG. 5) includes the radiant energy that directly reaches the coating film 82 from the heating element 32, and The reflection of the reflecting plate 60 reaches the radiant energy of the coating film 82. In the present embodiment, the shape of the radiating surface of the electromagnetic wave of the heating element 32 is symmetrical with respect to the center around the rotation axis R, and the outer surface of the heating element 32 when viewed from above is on the outer surface when viewed from below. The radiated areas are equal, and vary as the value of the turning angle changes. Therefore, when the swing angle is 0 degrees, the radiation energy directly reaching the coating film 82 from the heating element 32 is maximized, and similarly, the radiation energy directly from the heating element 32 to the coating film 82 and the reflection from the reflection plate 60 reach the coating film 82. The sum of the radiant energies also reaches a maximum at a turning angle of 0 degrees.

Next, a case where the coating film 82 is dried by the drying device 10 configured as described above will be described. First, the user operates the operation panel 98 to input various setting values such as drying conditions, and presses the start button. Further, among the various setting values input to the operation panel 98 by the user, information on the radiation wavelength emitted from the heating element 32 and the radiation energy to the coating film 82 for each of the five infrared heating units 30 is included. Further, the various setting values include the temperature and the air volume of the hot air from the air supply device 20, the amount of the exhaust gas discharged from the exhaust device 25 by the ambient gas of the space 12a, and the upper limit value of the surface temperature of the outer tube 38, and the flow rate. The flow rate of the second fluid in the fluid flow paths 72 and 77 and the elapsed time of the coating film 82 in the furnace body 12 and the like. In this way, the controller 90 inputs various set values input by the user according to the operation signals transmitted from the operation panel 98 and stores them in the RAM 94, and starts the drying process based on the various set values that have been memorized. Specifically, first, the controller 90 rotates the reel 17 and the reel 18 at a speed based on the input passage time to start the conveyance of the sheet 80. Thereby, the sheet body 80 is taken up from the reel 17 disposed at the left end of the drying device 10. In addition, before the sheet 80 is transported from the opening 15 into the furnace body 12, it is coated thereon by a coater not shown. The film is coated 82. Next, the sheet 80 coated with the coating film 82 is carried into the furnace body 12. At this time, the controller 90 controls the air supply fan 21, the exhaust fan 26, the first fluid supply source 52, and the second fluid supply source 54 based on the input set value. Further, the controller 90 executes a heating element control program (described later) based on the information on the radiation wavelength emitted from the heating element 32 and the radiation energy to the coating film 82, which controls the power supply source 50 and the motor 56. The output or the swivel position of the heating element 32 is controlled. Thereby, while the sheet body 80 passes through the space 12a of the furnace body 12, the coating film 82 formed on the upper surface of the sheet body 80 is irradiated with infrared rays (including infrared rays counter-measured by the reflection plate 60) emitted from the heating element 32. It is dried by this. Further, among the infrared rays emitted from the heating element 32, a part of the infrared rays are absorbed by the infrared absorbing plates 70 and 75, and the second fluid flowing through the fluid flow paths 72 and 77 is heated. Further, the hot air blown from the air supply device 20 heats the coating film 82 or the sheet 80, and removes the solvent evaporated from the coating film 82. The hot air containing the solvent evaporated from the coating film 82 is discharged by the exhaust device 25. The coating film 82 is dried as the above-described electrode while passing through the furnace body 12, and is carried out from the opening 16. Subsequently, the electrode (coating film 82) and the sheet body 80 are taken up together on a reel 18 provided at the right end of the furnace body 12.

Here, the heating element control program will be described in detail. Fig. 6 is a flow chart showing an example of a heating element control program. This flow is executed by the controller 90 after the user inputs information on the radiation wavelength emitted from the heat generating body 32 and the radiation energy to the coating film 82 through the operation panel 98, and an operation signal indicating that the start button has been pressed. Further, this flow is executed by the CPU 91 using the swing position obtaining unit 95 and the control unit 96. Further, the heating element control program of Fig. 6 is executed for each of the five infrared heating units 30 of Fig. 1, but the processing contents for any one are the same, so only one infrared ray is used here. Heating unit 30 explains its processing.

When the heating element control program is executed, the CPU 91 stores the input information about the radiation wavelength emitted from the heating element 32 and the radiation energy of the coating film 82 in the RAM 94 (step S100). Further, in the present embodiment, the information on the radiation wavelength is a value indicating the peak wavelength of the electromagnetic wave emitted from the heating element 32, which is input by the user through the operation panel 98. Further, the information on the radiant energy is the value of the radiant energy that reaches the coating film 82 from the heating element 32. Next, the CPU 91 derives the output of the heating element 32 based on the value of the peak wavelength stored in step S100 (step S110). In this process, a table describing the correspondence between the peak wavelength of the electromagnetic wave emitted from the heating element 32 and the output of the heating element 32 is stored in the flash memory 92, and the output of the heating element 32 is derived based on the table. Then, the CPU 91 acquires the value itself corresponding to the radiation energy stored in step S100 and the rotation angle of the output of the heating element 32 derived in step S110 based on the correspondence relationship data 93 (step S120). As shown in FIG. 5, the correspondence data 93 is data indicating the correspondence relationship between the three parameters (the output of the heating element 32, the rotation angle of the heating element 32, and the radiation energy reaching the coating film 82), and therefore, based on the 2 The parameters (here, the output of the heating element 32 and the radiation energy reaching the coating film 82) can obtain a value of another parameter (here, the rotation angle of the heating element 32). Further, the CPU 91 outputs a control signal to the power supply source 50 and the motor 56 to adjust the output and the swing angle of the heat generating body 32 (step S130), and ends the flow. By this step S130, power is supplied from the power supply source 50 so that the output of the heat generating body 32 is the output derived in step S110. Further, the driving force is output from the motor 56 so that the turning angle of the heat generating body 32 is the turning angle derived in step S120. Moreover, the heating element 32 is based on this angle of rotation and loss When the state of the heat is generated, the peak wavelength of the electromagnetic wave emitted from the heat generating body 32 in the drying process of the coating film 82 or the radiation energy from the heat generating body 32 to the coating film 82 becomes a value that the user has input (that is, Desire value).

In the present embodiment, the heating element control program is executed for each of the five infrared heating units 30, whereby the peak wavelength of the electromagnetic wave or the radiation energy from the heating element 32 to the coating film 82 can be individually adjusted. For example, for three of the five infrared heating units 30 on the front side of the first image, the output of the heating element 32 is 100% (peak wavelength is 3 μm), the rotation angle is 90 degrees, and for the rear two, The output of the heating element 32 is 25% (peak wavelength is 4 μm), and the rotation angle is 0 degree, whereby the peak wavelength of the electromagnetic wave radiated to the coating film 82 in the front side and the rear side of the furnace body 12 is changed, and The radiant energy of the five infrared heating units 30 with respect to the coating film 82 is made almost equal. By this, it is possible to change the peak wavelength of the electromagnetic wave emitted to the coating film 82 in accordance with the drying state of the coating film 82, and to suppress the radiation energy emitted from the three front infrared heating units 30 having a relatively high output from being excessively large to suppress the furnace. The temperature of the coating film 82 in the body 12 is uneven or overheated.

Here, the correspondence between the constituent elements of the present embodiment and the constituent elements of the present invention will be described. The infrared heating unit 30 of the present embodiment corresponds to the infrared heating unit of the present invention, and the heating element 32 corresponds to a heating element. Further, the infrared absorbing plates 70 and 75 correspond to an infrared ray absorbing body, the fluid flow paths 72 and 77 correspond to a fluid flow path, and the reflecting plate 60 corresponds to an infrared ray reflecting body. The motor 56 corresponds to a turning unit, the power supply source 50 corresponds to a power supply unit, the flash memory 92 of the memory correspondence data 93 corresponds to a corresponding relationship memory unit, the operation panel 98 corresponds to an input unit, and the swing position obtaining unit 95 corresponds. turn around The position acquisition unit, the control unit 96 corresponds to a control unit. The infrared heating unit 30, the motor 56, the power supply source 50, the flash memory 92, the controller 90 having the turning position obtaining unit 95 and the control unit 96, and the operation panel 98 correspond to the infrared heating device of the present invention. The drying device 10 corresponds to the drying device of the present invention.

The infrared heating unit 30 of the present embodiment described above includes a heating element 32 that emits electromagnetic waves including infrared rays when heated, and is rotatable about a rotation axis R, and has a shape in which electromagnetic waves are viewed from a direction perpendicular to the rotation axis R. The area of radiation on the exterior changes with the rotation. Therefore, the radiation area on the outer surface of the heat generating body 32 can be changed independently of the change in the radiation wavelength emitted from the heat generating body 32 due to the temperature change of the heat generating body 32. Further, when the radiation area on the outer surface changes, the radiation energy of the electromagnetic wave radiated from the heating element 32 in the downward direction changes. Therefore, the radiation energy (for example, the peak wavelength of electromagnetic waves or the wavelength range of electromagnetic waves) is adjusted while maintaining the radiation energy of the coating film 82 disposed in the lower direction, or the radiation wavelength of the coating film 82 is maintained constant. At the same time, the radiation energy and the like are adjusted, and the radiation wavelength and the radiation energy to the coating film 82 can be adjusted separately.

Further, when the heating element 32 is viewed from a cross section perpendicular to the rotation axis R, the radiation surface of the electromagnetic wave has an elliptical shape. In this way, the relatively simple shape can be used, so that the heating element 32 is "a shape in which the radiation area of the electromagnetic wave on the outer surface changes with the rotation when viewed from the lower direction".

Further, the infrared heating unit 30 includes infrared ray absorbing plates 70 and 75 capable of absorbing at least a part of the infrared rays radiated from the heat generating body 32 in a direction perpendicular to the rotation axis R and in a direction other than the downward direction among the electromagnetic waves. Therefore, it is possible to suppress infrared rays from the heat generating body 32 in a direction other than the downward direction. The coating film 82 is indirectly irradiated with radiation energy, and is reflected by other objects such as the wall portion of the furnace body 12 to reach the coating film 82 and the like. Further, when the radiation area on the outer surface of the heating element 32 is to be reduced to reduce the radiation energy to the coating film 82, if the radiation energy of the coating film 82 is indirectly applied, the decrease in the radiation energy may be insufficient. By providing the infrared absorbing plates 70 and 75, it is possible to suppress the occurrence of such a situation, and it is possible to further adjust the radiation energy by the rotation of the heating element 32.

Further, the infrared absorbing plates 70 and 75 can absorb at least a part of the infrared rays radiated from the heating element 32 toward the direction perpendicular to the rotation axis R and perpendicular to the downward direction (that is, the vertical direction) among the electromagnetic waves. In the case where the radiation area on the outer surface viewed in the downward direction is reduced by the rotation of the heating element 32, it is easy to increase the radiation area on the outer surface viewed from the direction perpendicular to the rotation axis R and perpendicular to the downward direction. Therefore, the infrared ray absorbing plates 70 and 75 can absorb infrared rays radiated in the front-rear direction, thereby improving the effect of suppressing the indirect application of radiant energy to the coating film 82 disposed in the lower direction. Further, the infrared absorbing plates 70 and 75 include an infrared absorbing surface that absorbs at least a part of infrared rays radiated from the heating element 32 toward the front-rear direction, and the range of the infrared absorbing surface in the vertical direction may include the presence of the heating element 32 in the vertical direction. range. This can improve the effect of suppressing the indirect application of the radiant energy to the coating film 82.

Further, the infrared heating unit 30 includes an infrared absorbing plate 70 that absorbs at least a portion of the infrared rays radiated from the heat generating body 32 toward the front direction in the front-rear direction from among the electromagnetic waves, and absorbs from the heat generating body 32 toward the front-rear direction. The infrared absorbing plate 75 of at least a portion of the infrared rays radiated in the rear direction. This can increase the suppression of the indirect application of radiant energy to the coating film 82. The effect of the situation.

Further, the infrared absorbing plates 70 and 75 have fluid flow paths 72 and 77 through which the second fluid can flow, and the second fluid flows through the fluid channels 72 and 77, thereby cooling the infrared absorbing plate 70 and 75. Thereby, it is possible to suppress the infrared ray absorbing plates 70 and 75 themselves from becoming radiation sources of infrared rays. Further, for example, the heat of the second fluid is used for the preheating of the hot air supplied from the air supply device 20, and the energy that cannot be used for heating the coating film 82 by the heating element 32 can be effectively utilized.

Further, the infrared heating unit 30 includes a reflection plate 60 capable of reflecting at least a portion of the infrared rays radiated in the electromagnetic wave toward the upper direction when viewed from the heat generating body 32, wherein the shape of the heat generating body 32 is from the lower direction The sum of the radiation area of the electromagnetic wave on the outer surface when viewing the heating element 32 and the radiation area of the electromagnetic wave on the outer surface when viewed from the upper direction changes with the rotation. The infrared rays are reflected by the reflecting plate 60, so that the infrared rays radiated from the heating element 32 in the downward direction and the infrared rays radiating in the upward direction reach the coating film 82. Therefore, the radiation energy from the heating element 32 can be more efficiently reached to the coating film 82. In addition, the heat generating body 32 changes from the radiation area on the outer surface when viewed from the lower direction and the outer surface on the outer surface when viewed from the upper direction, and changes from the heat generating body 32 to the coating film. The sum of the radiant energy of 82 and the radiant energy that is reflected by the reflector 60 also changes with the slewing. Therefore, even if the reflector 60 is provided, the adjustment of the radiation energy can be performed by the rotation of the heating element 32.

Further, in the drying device 10, the flash memory 92 of the controller 90 memorizes the correspondence data 93, and the correspondence relationship data 93 indicates the following values. Correspondence relationship: the value of the radiation wavelength of the heating element 32, the value of the rotation position of the heating element 32, and the value of the radiation energy emitted from the heating element 32 and reaching the coating film 82. Then, based on the correspondence relationship and the information on the radiation wavelength and the radiation energy that has been input to the operation panel 98, the value regarding the rotational position of the heating element 32 is obtained. Then, the electric power supplied from the electric power supply source 50 to the heating element 32 and the rotation of the heating element 32 by the motor 56 are controlled so that the heating element 32 is located at the turning position indicated by the acquired value, and the heating element 32 is emitted. The electromagnetic wave of the radiation wavelength that is input. Therefore, the user can appropriately adjust the supply power or the turning position for obtaining the desired radiation wavelength and the radiation energy by inputting information on the desired radiation wavelength and the radiation energy.

Further, the present invention is not limited to the above-described embodiments, and as long as it is within the technical scope of the present invention, it can of course be implemented in various forms.

For example, in the above embodiment, the infrared heating unit 30 may include one heat generating body 32, and may include a plurality of heat generating bodies 32 without being limited thereto. For example, a plurality of the heat generating bodies 32 may be included, which are arranged in parallel with each other, and arranged in a direction perpendicular to the rotation axis and perpendicular to the predetermined direction. Fig. 7 is a cross-sectional view showing the infrared heating unit 130 of the modification. In the infrared heating unit 130, the components that are the same as those of the infrared heating unit 30 are denoted by the same reference numerals, and the description thereof will be omitted, and the difference from the infrared heating unit 30 will be mainly described. As shown in Fig. 7, the infrared heating unit 130 includes an infrared heater 131 in addition to the components of the infrared heating unit 30. The infrared heater 131 includes a heating element 132, an inner tube 137, and an outer tube 138. The configuration of the infrared heater 131 is the same as that of the infrared heater 31. The infrared heater 131 has a rotation with the infrared heating unit 30 The rotating shaft R2 in which the shaft R is parallel, the heating element 132 can be rotated about the rotating shaft R2. Further, the heating element 32 and the heating element 132 are arranged side by side in the front-rear direction perpendicular to the rotation axes R and R2 and perpendicular to the predetermined direction (lower direction). Further, the infrared absorption plate 75 is disposed behind the infrared heater 131, and the infrared absorption plates 70 and 75 are provided to sandwich the infrared heater 31 and the infrared heater 131 from the front and rear. Further, one reflector 160 is provided as a reflector common to the infrared heater 31 and the infrared heater 131. The existence range of the reflection plate 160 in the front-rear direction includes the existence range of the heat generating bodies 32 and 132 or the outer tubes 38 and 138 in the front-rear direction. Further, a reflecting plate may be provided in the infrared heater 31 and the infrared heater 131, respectively. In the infrared heating unit 130, for example, the heating element 32 and the heating element 132 are rotated to have the same turning angle, so that the sum of the radiation areas on the outer surface of the electromagnetic waves when the heating elements 32 and 132 are viewed from below is accompanied by the heating element. 32, 132 changes in rotation. Thereby, the form factor of the surface of the coating film 82 with respect to the radiation surface of the heat generating bodies 32 and 132 can be changed, and the radiation wavelength and the radiation energy with respect to the coating film 82 can be adjusted like the infrared heating unit 30, respectively. Further, since the plurality of heat generating bodies 32 and 132 are arranged side by side in the front-rear direction, the adjacent heat generating bodies 32 and 132 can be heated by the infrared rays emitted by themselves. Thereby, the energy required to heat the heating elements 32 and 132 can be reduced as compared with the case where the infrared heating unit 30 having one heating element 32 is disposed separately. Further, the infrared heating unit may have three or more heat generating bodies. Further, the infrared heating unit 130 may not include the inner tube 137 and the outer tube 138, and the heat generating bodies 32 and 132 may be disposed in the same inner tube 137 and outer tube 138.

In the above embodiment, the shape of the heating element 32 perpendicular to the rotation axis R is an elliptical shape, but it is not limited thereto, as long as it can be returned by the heating element. The rotation is such that the radiation area of the electromagnetic wave on the outer surface when the heating element 32 is viewed from a predetermined direction perpendicular to the rotation axis changes with the shape of the rotation. For example, when the heating element 32 is viewed from a cross section perpendicular to the rotation axis R, the radiation surface of the electromagnetic wave may have a polygonal shape having a longitudinal direction and a short side direction. For example, the shape of the heating element 32 is a flat plate shape, and a cross section perpendicular to the rotation axis R may be a rectangular shape. Further, the heating element 32 has a shape in which the radiating surface of the electromagnetic wave has a shape symmetrical with respect to the center of the rotation axis R, but is not limited thereto. In the heating element 32, the shape of the radiating surface of the electromagnetic wave is a plane symmetrical shape that is a plane of symmetry passing through the plane of the rotating shaft R, but is not limited thereto. Further, in the configuration in which the infrared heating unit 130 shown in Fig. 7 generally includes a plurality of heat generating elements, the shapes of the plurality of heat generating elements may be the same or different. Fig. 8 is a perspective view showing the heating element 232 of the modification. The heating element 232 is, for example, a heating element (carbon filament) made of carbon, and is formed in a flat plate shape along the rotation axis R in the longitudinal direction. Further, a plurality of first grooves 236a and second grooves 236b are alternately formed on the heating element 232 along the longitudinal direction of the heating element 232, and the first groove 236a is formed from the longest side and the shortest side of the flat plate (straight square). The surface on one side of the surface (the upper surface in Fig. 8) faces the other surface (the lower surface in Fig. 8), and the second groove 236b is formed as the surface from the other side toward the one side. The heat generating body 232 is formed in a zigzag shape by forming the first groove 236a and the second groove 236b. Further, the reason for this shape is to increase the impedance value of the heating element 232 to an appropriate value. At both ends of the zigzag path of the heating element 232 (the lower right end and the lower left end of the heating element 232 in Fig. 8), the electric wires 32a are respectively connected. Further, the shaft body 34 is connected to each of both ends in the longitudinal direction of the heating element 232. The heating element 232 has a rectangular surface in which the electromagnetic wave radiating surface (the surface of the heating element 232) when viewed from a cross section perpendicular to the rotation axis R is rectangular, and The rotation axis R is located at the center of this rectangle. Further, the shape of the radiating surface of the electromagnetic wave of the heating element 232 is symmetrical with respect to the center of the rotation axis R as a central axis. In the same manner as the heating element 32 of the present embodiment, the heating element 232 is rotated about the rotation axis, and the radiation area on the outer surface of the electromagnetic wave when the heating element 232 is viewed from the direction perpendicular to the rotation axis R is changed.

In the above embodiment, the rotation axis R is located at the center of the ellipse of the cross section of the heating element 32, but is not limited thereto. The rotation axis R may be located at a position other than the center of the ellipse of the cross section of the heating element 32. That is, the rotation axis R can also be an eccentric position.

In the above embodiment, the infrared heating unit 30 is provided with the infrared absorbing plates 70 and 75, but is not limited thereto. For example, only one of the infrared absorbing plates 70 and 75 may be provided, or neither of them may be provided. Further, in addition to the infrared absorbing plates 70 and 75, the infrared absorbing plate may be disposed at a position other than the direction from the heat generating body 32. For example, the infrared absorbing plate may be disposed in the upper direction of the heating element 32 without the reflector 60. Alternatively, the infrared absorbing plate 70, the infrared absorbing plate 75, and the reflecting plate 60 are not provided, and the infrared absorbing plate is disposed in the upper direction of the heating element 32. Further, the infrared absorbing plates 70 and 75 have a range in which the infrared absorbing surface is present in the vertical direction, and the range in which the heating element 32 is present in the vertical direction is not limited thereto. For example, at least one of the infrared absorbing plates 70 and 75 may have a length in the vertical direction that is less than the length of the heating element 32 in the vertical direction.

In the above embodiment, the infrared absorbing plates 70 and 75 are provided with the fluid flow paths 72 and 77, but are not limited thereto. For example, at least one of the infrared absorption plates 70 and 75 may not have a fluid flow path. In addition, flowing through the fluid stream The second fluid of the passages 72 and 77 is air, but may be another gas or a liquid such as water.

In the above-described embodiment, the air supply fan 21 supplies the second fluid that has flowed through the fluid flow paths 72 and 77 and is preheated to the furnace body 12 as hot air, but is not limited thereto. For example, heat exchange between the second fluid and other fluids that have flowed through the fluid flow paths 72 and 77 and preheated is performed, and other fluids that are preheated by the air supply fan 21 are supplied as hot air to the furnace body. 12 is also possible. Alternatively, the second fluid flowing through the fluid flow paths 72 and 77 may not be used for other purposes.

In the above-described embodiment, the correspondence relationship data 93 is information indicating the correspondence between the output of the heating element 32, the rotation angle of the heating element 32, and the radiation energy reaching the coating film 82. The information of the correspondence relationship may be a value of the radiation wavelength of the heating element 32, a value regarding the rotation position of the heating element 32, and a state of being emitted from the heating element 32 and reaching the direction disposed under the heat generating body 32. The value of the radiant energy of the heating material coating film 82. For example, the "value regarding the radiation wavelength" is not limited to the range of the peak wavelength or the wavelength region of the output of the heating element 32. Specific examples of the range of the wavelength region are, for example, 90% or more of the total energy of the electromagnetic wave emitted from the heating element 32 in the range of 3 μm to 5 μm. Alternatively, the temperature of the heating element 32, the electric power supplied to the heating element 32, or the like may be used to derive a value of the radiation wavelength. The same applies to the "information on the radiation wavelength" input through the operation panel 98, and is not limited to the peak wavelength, and may be a range of the wavelength region or another value capable of deriving the radiation wavelength. The "value of the turning position" is not limited to the turning angle of the heating element 32, and may be a radiation area on the outer surface of the electromagnetic wave when the heating element 32 is viewed from below, and the value of the turning position can be derived. "turn off The value of the radiant energy is not limited to the value of the radiant energy itself, and may be any value that can derive the radiant energy. The same is true of "Information on Radiation Energy" input through the operation panel 98. Further, the "value regarding the radiation wavelength" used in the correspondence data 93 and the "information on the radiation wavelength" input through the operation panel 98 may be the same or different. The same is true for "the value of the radiation energy" and "the information about the radiation energy".

In the above embodiment, the rotation angle of the heating element 32 is adjusted by the motor 56, but it is not limited thereto. It is also possible to use a device or a mechanism other than the motor 56 as long as the heating element 32 can be rotated about the rotation axis R. Alternatively, the heating element 32 is not automatically rotated as in the controller 90 and the motor 56 of the present embodiment, and the rotation angle of the heating element 32 may be adjusted by the user for the device not including the motor 56.

In the above embodiment, the output of the heating element 32 is changed between 25% and 100%, and the peak wavelength is changed between 4 μm and 3 μm, but not limited thereto, as long as the peak wavelength can be made with the heating element. The output (temperature) of 32 changes and changes. For example, as the output of the heating element 32 changes, the peak wavelength of the electromagnetic wave emitted from the heating element 32 may vary between the infrared region (the region having a wavelength of 0.7 μm to 8 μm).

In the above-described embodiment, the material of the heating element 32 is exemplified by a nickel-chromium (Ni-Cr) alloy, but it is not limited thereto, and may be any material that emits infrared rays when heated. For example, it may be any of tungsten (W), molybdenum (Mo), tantalum (Ta), and iron-chromium aluminum (Fe-Cr-Al) alloy. Further, the heating element 32 may be a heating element made of carbon such as carbon fiber. Further, since the heating element 32 can be rotated, it is not necessary to maintain the nitrogen atmosphere or the like around the heating element. It is better to use airtight materials.

In the above-described embodiment, the inner tube 37 and the outer tube 38 transmit at least infrared rays among the electromagnetic waves radiated from the heat generating body 32, but at least a part of the infrared rays may be transmitted. For example, the inner tube 37 and the outer tube 38 are formed of a material (such as quartz glass) that absorbs infrared light having a wavelength of more than 4 μm and transmits a wavelength of 4 μm or less. Thereby, the output of the heating element 32 is adjusted so that the emission wavelength of the electromagnetic wave emitted from the heating element 32 is changed, and the ratio of the infrared ray having a wavelength of 4 μm or less among the electromagnetic waves reaching the coating film 82 can be increased. The inner tube 37 and the outer tube 38 may be formed of a material (for example, quartz glass) that absorbs infrared light having a wavelength exceeding 3.5 μm and transmitting a wavelength of 3.5 μm or less.

In the above-described embodiment, the inner tube 37 and the outer tube 38 are rotated without rotating the inner tube 37 and the outer tube 38. However, the heating element 32 is not limited thereto, and at least the heating element 32 can be rotated. For example, the infrared heater 31 including the inner tube 37 and the outer tube 38 can be rotated as a whole.

In the above-described embodiment, the coating film 82 is used as the object to be heated, and the coating film of the electrode for a lithium ion secondary battery is exemplified, but the object to be heated is not limited thereto. For example, the sheet body 80 is composed of a PET film, and the coating film 82 is a film for laminating a ceramic capacitor (MLCC) after drying. The coating film 82 in this case contains, for example, ceramic powder or metal powder, an organic binder, and an organic solvent. Alternatively, the coating film 82 is a film for low temperature co-fired ceramic (LTCC) or other green sheets.

In the above-described embodiment, the drying device 10 is a roll-to-roll drying furnace in which the coating film 82 is continuously conveyed and dried, but is not limited thereto. For example, the drying device 10 may be configured as a continuous roll-to-roll furnace, or may be dried while the coating film 82 is stopped in the furnace body 12. Batch of furnaces.

In the above-described embodiment, the information on the radiation wavelength of the heating element 32 and the radiation energy to the coating film 82 is input to the operation panel 98 by the user, but is not limited thereto. For example, information on the radiation wavelength of the heating element 32 and the radiation energy to the coating film 82 can be memorized in the flash memory 92, and the CPU 91 can input (read) this information from the flash memory 92. In this case, the CPU 91 corresponds to an input unit in the infrared heating unit of the present invention.

The present application is based on the priority of Japanese Patent Application No. 2013-114177, filed on May 30, 2013, the content of which is incorporated herein by reference.

Industrial utilization possibility

The present invention can be utilized in an industry in which infrared heating or drying is required, for example, in the battery industry for manufacturing an electrode coating film for a lithium ion secondary battery, or in a ceramic industry in which a multilayer ceramic capacitor (MLCC) or a low temperature co-fired ceramic (LTCC) is manufactured. .

S100~S130‧‧‧ is the step

Claims (12)

An infrared heating unit comprising: a heating element that emits an electromagnetic wave containing infrared rays when heated, and is rotatable about a predetermined rotation axis, and has a shape that is emitted from an external surface when viewed from a predetermined direction perpendicular to the rotation axis The area changes with this revolution. The infrared heating unit according to claim 1, wherein the heating element has an elliptical shape or a polygonal shape having a longitudinal direction and a short side direction when viewed from a cross section perpendicular to the rotation axis. The infrared heating unit according to claim 1 or 2, further comprising an infrared absorbing body capable of absorbing infrared rays radiated from the heat generating body toward a direction perpendicular to the rotating shaft and in a direction other than the predetermined direction. At least part of it. The infrared ray heating unit according to claim 3, wherein the infrared ray absorbing body is capable of absorbing at least one of infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and perpendicular to the predetermined direction. Part. The infrared ray heating unit according to claim 4, wherein the infrared ray absorbing body includes an infrared absorbing surface capable of absorbing at least one of infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and perpendicular to the predetermined direction In the case where the predetermined direction is the downward direction and the direction opposite to the predetermined direction is the upward direction, the range of the vertical direction of the infrared absorbing surface includes the range of the vertical direction of the heating element. Such as the infrared heating unit described in claim 4, the infrared absorption The body is capable of absorbing at least one of infrared rays radiated from the heat generating body toward a direction perpendicular to the rotation axis and perpendicular to the predetermined direction, and at least one of infrared rays radiated in the other direction. Part. An infrared heating unit according to claim 3, wherein the infrared absorbing body has a fluid flow path through which a fluid can flow. The infrared heating unit according to claim 1 or 2, further comprising an infrared reflector capable of reflecting at least one of infrared rays radiated in a direction opposite to the predetermined direction when viewed from the heat generating body among the electromagnetic waves a portion in which the heat generating body has a shape in which the electromagnetic wave on the outer surface when the heat generating body is viewed from the predetermined direction, and the electromagnetic wave on the outer surface when the heat generating body is viewed from a direction opposite to the predetermined direction The sum of the radiation areas varies with the rotation. The infrared heating unit according to claim 1 or 2, further comprising a plurality of the heat generating bodies configured to be parallel to each other and arranged in a direction perpendicular to the rotation axis and perpendicular to the predetermined direction. The infrared heating unit according to claim 1 or 2, which comprises a tubular member which absorbs infrared rays having a wavelength exceeding 3.5 μm and covers the heat generating body. An infrared heating device comprising: the infrared heating unit according to claim 1 or 2; a rotary unit that rotates the heating element around the rotating shaft; and a power supply assembly that supplies electric power to the heating element; The correspondence relationship memory module stores a correspondence relationship between the value of the radiation wavelength of the heating element, the value of the rotation position of the heating element, and the arrangement from the heat generating body and the arrangement of the heat generating body. a value of the radiant energy of the object to be heated in the predetermined direction; an input device capable of inputting information about the radiation wavelength and information about the radiant energy; and a gyro position obtaining device based on the input of the radiation wavelength Information, the information about the radiant energy input, and the corresponding relationship, obtaining a value corresponding to the input radiation wavelength and the radiant energy about the rotational position of the heating element; and a control component that controls the slewing component and the The power supply unit rotates the heat generating body by the turning unit such that the heat generating body is located at a turning position indicated by the acquired value, and the power supply unit supplies power to the heat generating body to cause the heat generating body Electromagnetic waves of the above-mentioned input radiation wavelength are emitted. A drying device comprising any one of the following to dry an object to be heated in a predetermined direction when viewed from the heat generating body: an infrared heating unit according to claim 1 or 2; and a patent application The infrared heating device of the eleventh aspect.