WO2024024668A1 - トランスバース方式の誘導加熱装置 - Google Patents
トランスバース方式の誘導加熱装置 Download PDFInfo
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- WO2024024668A1 WO2024024668A1 PCT/JP2023/026773 JP2023026773W WO2024024668A1 WO 2024024668 A1 WO2024024668 A1 WO 2024024668A1 JP 2023026773 W JP2023026773 W JP 2023026773W WO 2024024668 A1 WO2024024668 A1 WO 2024024668A1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
- H05B6/103—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor
- H05B6/104—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor metal pieces being elongated like wires or bands
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/44—Coil arrangements having more than one coil or coil segment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to a transverse type induction heating device.
- This application claims priority based on Japanese Patent Application No. 2022-121377 filed in Japan on July 29, 2022, the entire content of which is incorporated herein by reference.
- an induction heating device as a device that heats a conductor plate.
- the induction heating device has a coil.
- An alternating magnetic field (alternating current magnetic field) is generated from the coil of an induction heating device.
- Eddy currents are induced in the conductor plate by the alternating magnetic field.
- the conductor plate is heated by Joule heat based on the eddy current.
- a transverse type induction heating device causes an alternating magnetic field to cross the conductor plate substantially perpendicularly (preferably perpendicularly) to induce an eddy current in the conductor plate.
- Patent Document 1 discloses that one U-shaped core, a core with two U-shaped cores arranged next to each other, and a core with three or more U-shaped cores arranged next to each other are used as the core of a transverse type induction heating device. Disclosed for use.
- Patent Document 2 also discloses that a core (E-shaped core) in which the two U-shaped cores described above are arranged next to each other is used as a core of a transverse type induction heating device.
- Patent Document 3 discloses that a core having a plurality of legs arranged in a staggered manner at regular intervals in the conveying direction of a conductor plate is used as a core of a transverse type induction heating device. There is.
- the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a transverse type induction heating device that can induction-heat a conductor plate so as to satisfy the quality required for the conductor plate. With the goal.
- the transverse type induction heating device of the present invention has an upper inductor and a lower inductor that are arranged to face each other with a conductor plate in between, and applies an alternating magnetic field to the surface of the conductor plate.
- a transverse type induction heating device that inductively heats the conductor plate by crossing the conductor plate, wherein each of the upper inductor and the lower inductor includes a coil and a core, and the upper inductor
- the volume of one core that the lower inductor has and the volume of one core that the lower inductor has are, respectively, a heating upstream region of the one core and a heating downstream region of the one core.
- the heated upstream region of the core is a region upstream of the reference position of the core in the conveying direction of the conductor plate
- the heated downstream region of the core is a region of the conductor that is further upstream than the reference position of the core.
- a region on the downstream side in the conveyance direction of the plate, and the reference position of the core is a center position in the heating length direction between the most upstream end position of the coil of the core and the most downstream end position of the coil of the core
- the heating length direction is a direction parallel to the conveying direction of the conductor plate, and the most upstream end position of the coil of the core is located in the heating length direction among the ends of the coil arranged with respect to the core.
- the most downstream end position of the coil of the core is the position of the end of the core located most downstream in the heating length direction among the coils arranged with respect to the core.
- the same main magnetic flux flows through one core of the upper inductor, and the same main magnetic flux flows through one core of the lower inductor.
- the main magnetic flux is the magnetic flux passing through the conductor plate.
- FIG. 1 is a sectional view showing an example of a transverse induction heating device.
- FIG. 2A is a plan view showing an example of a transverse induction heating device.
- FIG. 2B is a bottom view showing an example of a transverse induction heating device.
- FIG. 3 is a rear view showing an example of a transverse type induction heating device.
- FIG. 4 is a front view showing an example of a transverse type induction heating device.
- FIG. 5 is a diagram conceptually showing an example of the main magnetic flux flowing through the induction heating device.
- FIG. 6A is a diagram conceptually showing an example of the amount of heat generated by a conductor plate heated using the induction heating device of this embodiment.
- FIG. 6B is a diagram conceptually showing an example of the amount of heat generated by a conductor plate heated using two general induction heating devices.
- comparison objects are the same in terms of length, position, size, spacing, etc., as well as being strictly the same, as well as being different within the scope of the gist of the invention (for example, due to tolerances determined at the time of design). This shall also include items that are different within the scope.
- xyz coordinates indicate the orientation relationship in each figure.
- a symbol with a cross mark (x) inside a white circle ( ⁇ ) indicates that the axis is positive in the direction from the front side to the back side of the page.
- a symbol with a black circle ( ⁇ ) inside a white circle ( ⁇ ) indicates that the axis has a positive direction from the back side to the front side of the page.
- a case will be exemplified in which the xy plane is a horizontal plane and the z-axis direction is the height direction.
- the conveyance direction of the conductor plate M is the positive direction of the y-axis
- the width direction of the conductor plate M is the x-axis direction
- the thickness direction of the conductor plate M is the z-axis direction.
- the upstream side in the conveyance direction of the conductor plate M is the negative side of the y-axis
- the downstream side is the positive side of the y-axis.
- the direction parallel to the conveyance direction (positive direction of the y-axis) of the conductor plate M ie, the y-axis direction
- the heating length direction corresponds to the longitudinal direction of the conductor plate M.
- FIG. 1 shows a cross section (yz cross section) of a transverse induction heating device 1000 when cut perpendicular to the width direction (x-axis direction) of the conductor plate M.
- FIG. 2A shows a transverse type induction heating apparatus 1000 viewed from above (positive direction side of the z-axis) (plan view).
- FIG. 2B shows a transverse type induction heating apparatus 1000 viewed from below (negative side of the z-axis) (bottom view).
- FIG. 3 shows a transverse type induction heating apparatus 1000 viewed from the upstream side (the negative direction side of the y-axis) in the conveyance direction of the conductor plate M (rear view).
- FIG. 1 shows a cross section (yz cross section) of a transverse induction heating device 1000 when cut perpendicular to the width direction (x-axis direction) of the conductor plate M.
- FIG. 2A shows a transverse type induction heating apparatus 1000 viewed from above (positive direction side of the z-axi
- FIG. 4 shows a transverse type induction heating apparatus 1000 viewed from the downstream side (positive direction side of the y-axis) in the conveying direction of the conductor plate M (front view).
- the conveyance direction of the conductor plate M is abbreviated as the conveyance direction as necessary
- the width direction of the conductor plate M is abbreviated as the width direction as necessary
- the thickness direction of the conductor plate M is It is abbreviated as the plate thickness direction if necessary.
- the transverse type induction heating apparatus 1000 inductively heats the conductor plate M by causing an alternating magnetic field to cross the surface of the conductor plate M substantially perpendicularly (preferably perpendicularly) during transport.
- the conductor plate M is, for example, a metal plate such as a steel plate.
- the transverse type induction heating device will be abbreviated as an induction heating device if necessary.
- An example of the configuration of the induction heating device 1000 will be described below. Note that the dimensions (W 1 to W 5 ) of the induction heating device 1000 will be described later in the (Design Method) section.
- Induction heating device 1000 includes an upper inductor 1100 and a lower inductor 1200.
- the upper inductor 1100 and the lower inductor 1200 are arranged with a gap in the thickness direction (z-axis direction) of the conductor plate M so as to face each other with the conductor plate M in between.
- the thickness direction (z-axis direction) of the conductor plate M corresponds to the direction in which the upper inductor 1100 and the lower inductor 1200 face each other.
- FIGS. 1 to 4 a case is illustrated in which the upper inductor 1100 and the lower inductor 1200 have a plane-symmetrical relationship with the virtual plane SL as the plane of symmetry.
- the virtual plane SL is a plane passing through the center of the conductor plate M in the thickness direction (z-axis direction) and parallel to the width direction (x-axis direction) and the longitudinal direction (y-axis direction). Note that the virtual surface SL is not a real surface.
- Upper inductor 1100 and lower inductor 1200 each have coils 1110 and 1210 and cores 1120 and 1220.
- the number of turns of each of the coils 1110 and 1210 is N (N is an integer of 1 or more).
- the number of turns of the coils 1110 and 1210 is not limited.
- FIGS. 1 and 2 illustrate a case where the number of turns N of the coils 1110 and 1210 is 5, respectively.
- the coils 1110 and 1210 are arranged such that, for example, the center lines of the coils 1110 and 1210 are approximately perpendicular (preferably perpendicular) to the plate surface of the conductive plate M. Coils 1110 and 1210 may be electrically connected in series or in parallel.
- the alternating currents flowing through the coils 1110 and 1210 are alternating currents supplied from the same alternating current power source. Further, the coils 1110 and 1210 may not be electrically connected. In this case, the alternating currents flowing through the coils 1110 and 1210 are alternating currents supplied from separate alternating current power sources.
- electrically connected in series has the same meaning as series connection commonly used in the field of electric circuits.
- electrically connected in parallel has the same meaning as parallel connection commonly used in the field of electric circuits. In the following description, being electrically connected in series will be referred to simply as being connected in series, as appropriate. Moreover, electrically connected in parallel is simply referred to as being connected in parallel, as necessary.
- An alternating current flowing from an AC power supply to the coils 1110, 1210 causes magnetic fluxes generated from the coils 1110, 1210 to have substantially the same (preferably the same) direction at the same time, and an alternating magnetic field generated from the coils 1110, 1210. It is only necessary to intersect the conductor plate M substantially perpendicularly (preferably perpendicularly) to the plate surface of the conductor plate M.
- the total number of turns of the coils 1110 and 1210 in the induction heating device 1000 is five.
- FIGS. 1 to 4 illustrate the case where the coils 1110 and 1210 are constructed using copper pipes.
- the copper pipe has, for example, a hollow rectangular parallelepiped shape.
- a cooling medium for example, cooling water
- FIGS. 2A and 2B a case where the coils 1110 and 1210 are configured using spiral copper pipes will be exemplified.
- the configuration of coils 1110 and 1220 is not limited to this configuration.
- the induction heating device 1000 may have a coil having a known configuration employed in induction heating devices.
- Coils 1110 and 1210 are arranged (wound) on the cores 1120 and 1220, respectively.
- Cores 1120 and 1220 are constructed using a soft magnetic material. Further, the volumes of the cores 1120 and 1220 are different between the heating upstream region and the heating downstream region.
- the heating upstream region is a region on the upstream side in the transport direction (on the negative side of the y-axis) with respect to the reference position SP.
- the heating downstream region is a region on the downstream side in the transport direction (positive direction side of the y-axis) with respect to the reference position SP.
- the upstream side in the conveyance direction and the downstream side in the conveyance direction will be abbreviated as upstream side and downstream side, respectively, as necessary.
- the reference position SP is the center position in the heating length direction (y-axis direction) between the coil most upstream end position MU and the coil most downstream end position MD.
- the coil most upstream end position MU is the position of the end located most upstream (negative direction side of the y-axis) in the heating length direction (y-axis direction) among the end positions of the coils 1110 and 1210.
- the coil most downstream end position MD is the position of the end located at the most downstream side (positive direction side of the y-axis) in the heating length direction (y-axis direction) among the end positions of the coils 1110 and 1210. .
- the most upstream end position MU of the coil is Among the positions of the ends of the coils 1110 and 1210, this is the position of the end located on the most upstream side (negative side of the y-axis) in the heating length direction (y-axis direction).
- the coil most downstream end position MD is the end located at the most downstream side (on the positive side of the y-axis) in the heating length direction (y-axis direction) among the end positions of the coils 1110 and 1210. It's the location.
- the most upstream end position MU of the coil is It is determined for the coil located most upstream (negative side of the y-axis) in the heating length direction. That is, the coil most upstream end position MU is the position of the end located most upstream in the heating length direction among the positions of the ends of the coil located most upstream in the heating length direction. Further, the coil most downstream end position MD is determined in the coil located most downstream (on the positive side of the y-axis) in the heating length direction among the plurality of coils. That is, the coil most downstream end position MD is the position of the end located most downstream in the heating length direction among the positions of the ends of the coil located most downstream in the heating length direction.
- the volume of one core 1120 of the upper inductor 1100 is different between the heating upstream region of the one core 1120 and the heating downstream region of the one core 1120.
- the volume of one core 1220 of the lower inductor 1200 is different between the heating upstream region of the one core 1220 and the heating downstream region of the one core 1220.
- FIG. 5 is a diagram conceptually showing an example of the main magnetic flux flowing through the induction heating device 1000. Note that in FIG. 5, the configurations of the coils 1110 and 1210 are shown in a simplified manner. Further, in FIG. 5, hatching indicating the cross section is omitted.
- the main magnetic flux is a magnetic flux that contributes to heating the conductor plate M.
- the main magnetic flux is the magnetic flux that passes through the conductor plate M among the magnetic fluxes generated from the cores 1120 and 1220.
- the main magnetic flux is substantially perpendicular (preferably perpendicular) to the plate surface of the conductor plate M.
- the magnetic flux lines ⁇ 1 to ⁇ 32 representing the main magnetic flux each have the same starting point and ending point. That is, as shown in FIG. 5, the path (magnetic path) formed by the individual magnetic flux lines ⁇ 1 to ⁇ 32 becomes a closed circuit.
- FIG. 5 the path (magnetic path) formed by the individual magnetic flux lines ⁇ 1 to ⁇ 32 becomes a closed circuit.
- the path (magnetic path) formed by the magnetic flux lines ⁇ 1 to ⁇ 32 is a closed path passing through the core 1120 of the upper inductor 1100, the conductor plate M, and the core 1220 of the lower inductor 1200.
- An example is given below.
- the same main magnetic flux flows through the core 1120. That is, inside the core 1120, there exists a path (magnetic path) formed by the same lines of magnetic flux ⁇ 1 to ⁇ 32. Therefore, core 1120 is one core.
- the same main magnetic flux flows through the core 1220. That is, inside the core 1220, there exists a path (magnetic path) formed by the same lines of magnetic flux ⁇ 1 to ⁇ 32. Therefore, core 1220 is one core.
- 1 to 4 illustrate the case where the cores 1120 and 1220 are each integral. Assume that a plurality of parts constituting the core are arranged at intervals from each other. When the same main magnetic flux flows through the plurality of parts, the core constituted by the plurality of parts is one core.
- cores through which the same main magnetic flux does not flow are not the same cores (that is, they are different cores).
- cores through which the same main magnetic flux does not flow are different cores. Further, even though the cores have the same main magnetic flux flowing through them, the core 1120 of the upper inductor 1100 and the core 1220 of the lower inductor 1200 are different cores.
- FIGS. 1 to 4 illustrate the case where the upper inductor 1100 has one core 1120. Further, FIGS. 1 to 4 illustrate a case where the volume of the heated downstream region of the core 1120 is larger than the volume of the heated upstream region of the core 1120. Similarly, FIGS. 1 to 4 illustrate the case where the lower inductor 1200 has one core 1220. Further, FIGS. 1 to 4 illustrate a case where the volume of the heated downstream region of the core 1220 is larger than the volume of the heated upstream region of the core 1220.
- the heating upstream region and the heating downstream region the region where the core volume is smaller will be referred to as a heating amount reduction region as necessary. Further, the region where the core volume is larger is referred to as a heating amount increasing region as necessary. In FIGS.
- heating upstream region is a heating amount reduction region and the heating downstream region is a heating amount increasing region.
- FIG. 1 FIG. 1
- FIG. 2A, and FIG. 2B (heating amount reduction region) is shown below the heating upstream region, and (heating amount increasing region) is shown below the heating downstream region. , means this.
- the region from the most upstream end position MU of the coil to the reference position SP is the heating upstream region (heating amount reduction region).
- the region from the reference position SP to the most downstream position CD is the heating downstream region (heating A case in which the amount is increased (increased amount area) will be exemplified.
- FIGS. 1, 2A, and 2B among the regions in the heating length direction (y-axis direction) of the upper inductor 1100, the region from the reference position SP to the most downstream position CD is the heating downstream region (heating A case in which the amount is increased (increased amount area) will be exemplified.
- FIGS. 1 the region from the most upstream end position MU of the coil to the reference position SP is the heating upstream region (heating amount reduction region).
- the most downstream position CD is the position of the end located at the most downstream side (on the positive side of the y-axis) in the heating length direction (y-axis direction) among the ends of the upper inductor 1100 and the lower inductor 1200. It is.
- the volume of the heated upstream region may be larger than the volume of the heated downstream region.
- the volume of the heated upstream region may be larger than the volume of the heated downstream region.
- the position of the rotation axis in the heating length direction (y-axis direction) when rotating the induction heating apparatus 1000 shown in FIGS. 1 to 4 by 180 degrees is, for example, the reference position SP.
- the position of the rotation axis in the width direction (x-axis direction) is, for example, the center position of the cores 1120, 1220, and the direction in which the rotation axis extends is, for example, the thickness direction (z-axis direction). It is.
- the volumes of the cores 1120 and 1220 are made different between the heated upstream region and the heated downstream region. Therefore, in order to satisfy the quality required for the conductor plate M, the amount of heat generated by the conductor plate M passing through the heated downstream area (that is, the amount of heating for the conductor plate M) and the amount of heat generated by the conductor plate M passing through the heated upstream area are determined. The amount of heat generated by the plate M can be made different. Therefore, the quality of the conductor plate M can be improved.
- the ratio of the volume of the cores 1120, 1220 in the heating amount increasing region to the volume of the cores 1120, 1220 in the heating amount reducing region is determined by the amount of heat generated by the conductor plate M passing through the heating downstream region and the heating amount passing through the heating upstream region. It is determined depending on the difference between the amount of heat generated by the conductor plate M inside and the amount of heat generated by the conductor plate M inside. From the viewpoint of clearly differentiating the quality of the conductor plate M between when such a difference is made and when not, the volume of the cores 1120, 1220 in the heating amount increasing region with respect to the volume of the cores 1120, 1220 in the heating amount reducing region. It is preferable that the ratio of each is 5.1 or more.
- the cores 1120, 1220 have central legs 1121, 1221, central trunks 1122, 1222, end trunks 1123, 1223, and end legs 1124, 1224, respectively. , is exemplified.
- the central legs 1121 and 1221 are arranged in the hollow regions of the coils 1110 and 1210, respectively.
- 1 to 4 illustrate the case where the central legs 1121, 1221 are arranged such that the central position of the central legs 1121, 1221 in the heating length direction (y-axis direction) is the reference position SP. .
- the end legs 1124, 1224 are arranged closer to the heating amount increasing region (in the positive direction of the y-axis in FIGS. 1 to 4) than the coils 1110, 1210, respectively.
- the center body parts 1122, 1222 and the end body parts 1123, 1223 are arranged closer to the back side than the coils 1110, 1210, respectively.
- the back side is the side opposite to the side where the conductor plate M is present (that is, the side where the conductor plate M is not present).
- the back side of the upper inductor 1100 is the side where the lower inductor 1200 is not present.
- the back side of lower inductor 1200 is the side where upper inductor 1100 is not present.
- the back side of the coil 1110 is on the positive side of the z-axis rather than the coil 1110, and the side of the back side of the coil 1210 is on the negative side of the z-axis than the coil 1210. It's on the side.
- the central trunk portions 1122 and 1222 each include a region closer to the heating amount increasing region (in the positive direction of the y-axis in FIGS. 1 to 4) than the central leg portions 1121 and 1221, respectively.
- the end body parts 1123 and 1223 are arranged closer to the heating amount increasing region than the center body parts 1122 and 1222 and the coils 1110 and 1210, respectively.
- FIGS. 1 to 4 a case is illustrated in which the central leg portions 1121, 1221, the central body portions 1122, 1222, the end body portions 1123, 1223, and the end leg portions 1124, 1224 have a rectangular parallelepiped shape.
- the width direction (x-axis direction) of the center side legs 1121, 1221, the center side body parts 1122, 1222, the end side body parts 1123, 1223, and the end side legs 1124, 1224 The case where the lengths are the same is illustrated. Further, in FIGS.
- FIGS. 1 to 4 a case is illustrated in which the tip surfaces (end surfaces on the conductor plate M side) of the central leg portions 1121 and 1221 are arranged closer to the conductor plate M than the coils 1110 and 1210. Further, FIGS. 1 to 4 illustrate a case where the coils 1110 and 1210 are arranged closer to the conductor plate M than the tip surfaces of the end-side legs 1124 and 1224. Furthermore, in FIGS. 1 to 4, a case is illustrated in which the lengths of the center side body parts 1122, 1222 and the end side body parts 1123, 1223 in the plate thickness direction (z-axis direction) are the same. Furthermore, in FIGS.
- FIGS. 1 to 4 illustrate a case where the center side body part 1222 and the end side body part 1223 are magnetically connected so as to form one rectangular parallelepiped shape as a whole. Note that being magnetically connected means that the same main magnetic flux flows as the main magnetic flux described above with reference to FIG.
- FIGS. 1 to 4 illustrate a case where the center body portion 1122 is arranged closer to the back side than the center leg portion 1121. Specifically, FIGS. 1 to 4 illustrate a case where the base end surface (the end surface on the opposite side to the conductor plate M side) of the central leg portion 1121 is connected to the central body portion 1122 without a break. Therefore, the same main magnetic flux as the main magnetic flux flowing through the center body portion 1122 flows through the center leg portion 1121 . Furthermore, in FIGS. 1 to 4, a case is illustrated in which the center side body part 1122 is arranged upstream of the end side body part 1123. Specifically, FIGS.
- FIG. 1 to 4 illustrate a case where the downstream end surface of the central body portion 1122 is connected to the upstream end surface of the end body portion 1123 without a break. Therefore, the same main magnetic flux as the main magnetic flux flowing through the end body parts 1123 flows through the center body part 1122 .
- FIGS. 1 to 4 illustrate a case where the end body portion 1123 is disposed closer to the back side than the end leg portion 1124. Specifically, FIGS. 1 to 4 illustrate a case where the base end surface of the end leg portion 1124 is connected to the end body portion 1123 without a break. Therefore, the same main magnetic flux as the main magnetic flux flowing through the end leg portions 1124 flows through the end body portion 1123 .
- the distal end surface of the center leg 1121 and the distal end surface of the end leg 1124 are spaced from the plate surface of the conductive plate M (the surface on the positive side of the z-axis). The following is an example of the case where they face each other.
- FIGS. 1 to 4 illustrate a case where the base end surface (the end surface on the opposite side to the conductor plate M side) of the central leg portion 1221 is connected to the central body portion 1222 without a break. Therefore, the same main magnetic flux as the main magnetic flux flowing through the center body portion 1222 flows through the center leg portion 1221 .
- FIGS. 1 to 4 a case is illustrated in which the center side body part 1222 is disposed upstream of the end side body part 1223. Specifically, FIGS.
- FIG. 1 to 4 illustrate a case where the downstream end surface of the central body portion 1222 is connected to the upstream end surface of the end body portion 1223 without a break. Therefore, the same main magnetic flux as the main magnetic flux flowing through the end-side trunk portions 1223 flows through the center-side trunk portion 1222 .
- FIGS. 1 to 4 illustrate a case where the end body portion 1223 is disposed closer to the back side than the end leg portion 1224. Specifically, FIGS. 1 to 4 illustrate a case where the base end surface of the end leg portion 1224 is connected to the end body portion 1223 without a break. Therefore, the same main magnetic flux as the main magnetic flux flowing through the end leg portions 1224 flows through the end body portion 1223 .
- the distal end surface of the central leg 1221 and the distal end surface of the end leg 1224 are spaced apart from the plate surface of the conductive plate M (the surface on the negative side of the z-axis). The following is an example of the case where they face each other.
- FIGS. 1 to 4 the width direction (x-axis direction) of the center side legs 1121, 1221, the center side body parts 1122, 1222, the end side body parts 1123, 1223, and the end side legs 1124, 1224
- the center legs 1121, 1221, the center trunks 1122, 1222, the end trunks 1123, 1223, and the end legs 1124, 1224 on the positive x-axis side The case where the positions of the ends are the same will be exemplified.
- FIGS. 1 to 4 the center legs 1121, 1221, the center trunks 1122, 1222, the end trunks 1123, 1223, and the end legs 1124, 1224 on the positive x-axis side
- FIGS. 1 to 4 illustrate a case where the portions of the cores 1120 and 1220 other than the center leg portions 1121 and 1221 and the center body portions 1122 and 1222 do not exist in the heating amount reduction region.
- center side leg parts 1121 and 1221 center side body parts 1122 and 1222, end side body parts 1123 and 1223, and end side leg parts. It was explained separately as 1124 and 1224.
- the central legs 1121, 1221, the central trunks 1122, 1222, the end trunks 1123, 1223, and the end legs 1124, 1224 are each integral. Therefore, there is no boundary line at the boundary between the central legs 1121, 1221, the central trunks 1122, 1222, the end trunks 1123, 1223, and the end legs 1124, 1224.
- one core may be constructed by manufacturing these as separate parts and combining them.
- At least two portions of the center leg portion 1121, the center body portion 1122, the end body portion 1123, and the end leg portions 1124 may be arranged with a distance from each other. good. However, the at least two portions are configured and arranged so that the same main magnetic flux flows through the at least two portions. Similarly, at least two portions of the center leg portion 1221, the center body portion 1222, the end body portions 1123, 1223, and the end leg portions 1224 are arranged with a space therebetween. It's okay to be. However, the at least two portions are configured and arranged so that the same main magnetic flux flows through the at least two portions.
- the induction heating device 1000 of this embodiment includes leakage flux reducing members 1140 and 1240.
- the leakage flux reducing members 1140 and 1240 are arranged to reduce leakage of magnetic flux generated when the cores 1120 and 1220 are excited by the alternating current flowing through the coils 1110 and 1210, respectively.
- the leakage magnetic flux is magnetic flux that does not contribute to the heating of the conductor plate M.
- the leakage magnetic flux is a magnetic flux generated from the cores 1120 and 1220 that does not pass through the conductor plate M.
- the leakage flux reduction members 1140 and 1240 are arranged in the heating amount reduction region. 1 to 4 illustrate a case where the leakage flux reducing members 1140, 1240 are arranged to face the end surfaces of the coils 1110, 1210 on the back side with a space therebetween. Moreover, in this embodiment, a case will be exemplified in which the leakage flux reducing member is not disposed in the heating amount increasing region. However, the leakage flux reducing member may be placed in the heating amount increasing region.
- each of the leakage flux reducing members 1140 and 1240 is a single plate.
- FIGS. 1 to 4 illustrate a case in which the lengths of the leakage flux reducing members 1140 and 1240 in the width direction (x-axis direction) are the same as the lengths of the cores 1120 and 1220 in the width direction, respectively.
- the length of the leakage magnetic flux reducing members 1140 and 1240 in the heating length direction (y-axis direction) is from the length of the center side trunk portions 1122 and 1222 in the heating length direction, respectively.
- FIGS. 1 to 4 A case where the value is obtained by subtracting the length of the portions 1121 and 1221 in the heating length direction will be exemplified.
- the positions of the rear surfaces of the leakage flux reducing members 1140 and 1240 are aligned with the positions of the rear surfaces of the cores 1120 and 1220, respectively (the z-axis direction of the surfaces is The following is an example of the case where the positions of the two are the same.
- the positions of the ends of the leakage flux reducing members 1140 and 1240 in the width direction are aligned with the positions of the ends of the cores 1120 and 1220 in the width direction, respectively.
- the leakage flux reducing members 1140 and 1240 are preferably constructed using a non-magnetic material from the viewpoint of reducing leakage of magnetic flux generated when the cores 1120 and 1220 are excited by the alternating current flowing through the coil 1110. Further, from the viewpoint of suppressing heat generation in the induction heating device 1000, it is more preferable that the leakage flux reducing members 1140 and 1240 are made of copper having high thermal conductivity. In this embodiment, a case is illustrated in which each of the leakage flux reducing members 1140 and 1240 includes one copper plate. Note that the leakage flux reducing members 1140 and 1240 may be configured using, for example, a plurality of copper plates stacked so that the plate surfaces face each other.
- the induction heating device 1000 of this embodiment includes intervening members 1130 and 1230.
- the intervening members 1130 and 1230 are used for positioning the leakage flux reducing members 1140 and 1240 and ensuring electrical insulation between the coils 1110 and 1210 and the leakage flux reducing members 1140 and 1240, respectively.
- Intervening members 1130 and 1230 are arranged between leakage flux reducing members 1140 and 1240 and coils 1110 and 1210, respectively.
- the intervening members 1130, 1230 are made of resin material.
- the resin material is, for example, glass epoxy resin or phenol resin.
- 1 to 4 illustrate a case where the intervening members 1130, 1230 have a rectangular parallelepiped shape with the same size as the space between the leakage flux reducing members 1140, 1240 and the coils 1110, 1210.
- the cores 1120 and 1220 are not located upstream (on the negative side of the y-axis) of the central leg portions 1121 and 1221, respectively. Therefore, if the leakage flux reducing members 1140 and 1240 do not exist, for example, the magnetic flux exiting from the cores 1120 and 1220 to the downstream side (the negative direction side of the y-axis) from the cores 1120 and 1220 will not pass through the conductor plate M. It becomes easy to cause magnetic flux leakage.
- the leakage flux reducing members 1140 and 1240 by arranging the leakage flux reducing members 1140 and 1240, the magnetic flux exiting from the cores 1120 and 1220 on the downstream side (the negative direction side of the y-axis) from the cores 1120 and 1220 is reduced by the leakage flux reducing members 1140 and 1240.
- it is easier to move toward the direction of the conductor plate M see magnetic flux lines ⁇ 19, ⁇ 21, ⁇ 23, ⁇ 25, ⁇ 27, ⁇ 29, and ⁇ 31 shown in FIG. 5). Therefore, these magnetic fluxes are less likely to become leakage fluxes (that is, more likely to become main magnetic fluxes).
- the induction heating device 1000 may include a shield plate (not shown) for preventing overheating of the edge portion (end portion in the width direction) of the conductor plate M.
- the shield plates are arranged between the edge portion of the conductor plate M and the cores 1120 and 1220, respectively. Further, the shield plate may be moved according to the width of the conductor plate M and the meandering amount (the amount of movement in the width direction) of the conductor plate M. Note that the shield plate is for suppressing the main magnetic flux from passing through the edge portion of the conductor plate M, and is not for reducing leakage magnetic flux.
- FIG. 6A is a diagram conceptually showing an example of the amount of heat generated by the conductor plate M heated using the induction heating device 1000 of this embodiment.
- FIG. 6B is a diagram conceptually showing an example of the calorific value of the conductor plate M heated using two general induction heating devices. The two general induction heating devices are arranged at a distance from each other in the heating length direction (x-axis direction).
- P min is the minimum value of the amount of heat generated at a certain portion of the conductive plate M while passing through the induction heating device 1000.
- the region is, for example, a center region in the width direction (x-axis direction).
- P max is the maximum value of the amount of heat generated at a certain portion of the conductive plate M while passing through the induction heating device 1000 .
- the amount of heat generated at each part of the conductor plate M passing through the induction heating apparatus 1000 of this embodiment is maximum at the most downstream position CD.
- P A and P B are the amount of heat generated at a certain part of the conductor plate M that is passing through the central leg parts 1121 and 1221 of the induction heating apparatus 1000.
- the volume of the heating upstream region and the volume of the heating downstream region are made different.
- the amount of heat generated at each part of the conductor plate M passing through the central legs 1121 and 1221 of the induction heating device 1000 can be adjusted. It is possible to adjust the calorific value P A , P B , etc. (the double-arrowed line shown in FIG. 6A indicates this).
- the amount of heat generated by the conductor plate M on the downstream side of the reference position SP (that is, the amount of heating for the conductor plate M) can be made different from the amount of heat generated by the conductor plate M on the upstream side of the reference position SP. . Therefore, a difference should be made between the temperature increase rate in the heating length direction (y-axis direction) in the region upstream from the reference position SP and the temperature increase rate in the heating length direction in the region downstream from the reference position SP. can be realized with one core 1120, 1220. From the above, the quality of the conductor plate M can be adjusted by adjusting the volume of the heated upstream region and the volume of the heated downstream region.
- CU1 represents the most upstream position of the induction heating device located on the upstream side of two general induction heating devices.
- the most upstream position is the position of the end located at the most upstream side (negative side of the y-axis) in the heating length direction (y-axis direction) among the ends of the upper inductor and the lower inductor.
- the coil most upstream end position MU and the most upstream position are the same position is illustrated.
- MU1 represents the most upstream end position of the coil of the induction heating device disposed on the upstream side.
- SP1 represents the reference position of the induction heating device disposed on the upstream side.
- MD1 represents the most downstream end position of the coil of the induction heating device disposed on the upstream side.
- CD1 represents the most downstream position of the induction heating device disposed on the upstream side.
- P1min is the minimum value of the amount of heat generated at a certain portion of the conductor plate M that is passing through the induction heating device disposed on the upstream side of two general induction heating devices. As shown in FIG. 6B, the amount of heat generated at each part of the conductor plate M passing through the induction heating device disposed on the upstream side becomes minimum at the coil most upstream position CU1. P 1max is the maximum value of the amount of heat generated at a certain portion of the conductor plate M that is passing through the induction heating device disposed on the upstream side. As shown in FIG. 6B, the amount of heat generated at each part of the conductor plate M passing through the induction heating device disposed on the upstream side becomes maximum at the most downstream position CD1. In addition, in FIG. 6B, P 1C is the amount of heat generated at a certain portion of the conductive plate M that is passing through the central leg of the induction heating device disposed on the upstream side.
- the volume of one core is the same in the heating upstream region and the heating downstream region. Therefore, of the two general induction heating devices, the amount of heat generated P 1C of each part of the conductor plate M passing through the central leg of the induction heating device placed on the upstream side is The maximum value P1max of the calorific value at the relevant portion of the conductive plate M passing through the induction heating device is fixed at 1/2 times.
- CU2 represents the most upstream position of the induction heating device located on the downstream side among two general induction heating devices.
- MU2 represents the most upstream end position of the coil of the induction heating device disposed on the downstream side.
- SP2 represents the reference position of the induction heating device disposed on the downstream side.
- MD2 represents the most downstream end position of the coil of the induction heating device disposed on the downstream side.
- CD2 represents the most downstream position of the induction heating device disposed on the upstream side.
- P2min is the minimum value of the amount of heat generated at a certain portion of the conductor plate M that is passing through the induction heating device located downstream of two general induction heating devices. As shown in FIG. 6B, the amount of heat generated at each part of the conductor plate M passing through the induction heating device disposed on the downstream side becomes minimum at the coil most upstream position CU2. P2max is the maximum value of the amount of heat generated at a certain portion of the conductor plate M while passing through the induction heating device disposed on the downstream side. As shown in FIG. 6B, the amount of heat generated at each part of the conductive plate M passing through the induction heating device disposed on the downstream side becomes maximum at the most downstream position CD2. In addition, in FIG. 6B, P2C is the amount of heat generated at a certain portion of the conductor plate M that is passing through the central leg of the induction heating device disposed on the downstream side.
- the volume of one core is the same in the heating upstream region and the heating downstream region. Therefore, of the two general induction heating devices, the amount of heat generated P 2C of each part of the conductor plate M passing through the central leg of the induction heating device placed downstream is The maximum value P2max of the calorific value at the relevant portion of the conductor plate M passing through the induction heating device is fixed at 1/2 times.
- the volume of one core is the same in the heating upstream region and the heating downstream region. Therefore, the amount of heat generated by the conductor plate M upstream of the reference positions SP1 and SP2 (that is, the amount of heating for the conductor plate M) is the same as the amount of heat generated by the conductor plate M downstream of the reference positions SP1 and SP2. All I can do is Furthermore, unless a plurality of induction heating devices are used, the amount of heat generated by the conductor plate M in the heating length direction (y-axis direction) cannot be adjusted.
- the amount of heat generated by the conductor plate M in the heating length direction (y-axis direction) cannot be adjusted.
- the amount of heat generated by the conductor plate M in the heating length direction (y-axis direction) cannot be adjusted. Therefore, compared to the induction heating device 1000 of this embodiment, the time during which the conductor plate M is heated by the induction heating device is longer. Furthermore, as shown in FIG. 6B, there is a region between the two induction heating devices where the conductive plate M is not heated.
- Design method Next, an example of a method for designing the dimensions of the cores 1120 and 1220 for configuring an induction heating device so that the conductor plate can be inductively heated to meet the quality required for the conductor plate will be described.
- a method for designing the dimensions of the cores 1120 and 1220 will be exemplified when the heating upstream region is a heating amount reduction region and the heating downstream region is a heating amount increasing region.
- the length (mm) of the leakage flux reducing members 1140 and 1240 in the heating length direction (y-axis direction) is defined as W1 .
- the length (mm) of the central body portions 1122, 1222 in the heating length direction (y-axis direction) is defined as W 2 (>W 1 ).
- the length (mm) of the end-side body portions 1123, 1223 in the heating length direction (y-axis direction) is defined as W3 .
- the length (mm) of the end leg portions 1124, 1224 in the plate thickness direction (z-axis direction) is defined as W4 .
- the length (mm) in the plate thickness direction (z-axis direction) of the region that protrudes toward the conductor plate M side from the tip surfaces of the coils 1110 and 1210 is defined as W 5 .
- W 1 to W 5 shown in FIGS. 1 to 4 represent these lengths.
- the heat generation ratio (%) of the region is defined as P (P 1 to P 4 ).
- the calorific value ratio P of a certain part of the conductor plate M is the heating value ratio P of the part when the part is passing through the induction heating device 1000 (the heating upstream region and the heating downstream region). This is the ratio of the amount of heat generated in the region when passing through the upstream region, expressed as a percentage.
- the calorific value ratio P is expressed as P A ⁇ P max ⁇ 100 and P B ⁇ P max ⁇ 100.
- the present inventors performed numerical analysis on the induction heating device by configuring cores with different combinations of numerical values of W 1 to W 5 and calculated the calorific value ratio P for each combination. Note that the conditions other than the numerical values of W 1 to W 5 are the same. Furthermore, in the notation of the following mathematical expressions, the numerical values given as each symbol P 1 to P 4 and W 1 to W 5 are assumed to be 0 (zero) or a positive value. Therefore, for example, -W 1 becomes 0 (zero) or a negative value.
- P 1 which is the calorific value ratio P when only W 1 and W 2 were different, was calculated by numerical analysis. Note that when changing W 1 and W 2 , the condition of W 2 >W 1 was satisfied. Furthermore, when W 1 is set to a constant value and W 1 is made shorter than the state shown in FIG. Among them, W2 was made long assuming that a part of the region on the heating amount increasing region side (in the positive direction of the y-axis in FIG. 1) is the region of the core 1120. That is, the central body portions 1122, 1222 are extended toward the heating amount reduction region (in the negative direction of the y-axis in FIG. 1). However, the coil most upstream end position MU is not changed.
- P2 which is the calorific value ratio P when W3 was varied in addition to W1 and W2 .
- a regression equation including P 1 in equation (1) was calculated by regression analysis as a regression equation showing the relationship between P 2 and W 1 , W 2 , and W 3 .
- P 2 by expressing P 2 with a formula that subtracts the function f(W 3 /(W 2 +W 3 )) of W 3 /(W 2 +W 3 ) from P 1 , as shown in formula ( 2) below.
- Equation (2) the larger W 3 is, the smaller P 2 becomes.
- the function f(W 3 /(W 2 +W 3 ) on the right side of equation (2) ) is the function f(W 3 / This shows that each area of the conductor plate M generates heat by the value of W 2 +W 3 ).
- Equation (2) also shows that W 1 /(W 1 +W 2 ) and W 3 /(W 2 +W 3 ) This is a multiple regression equation with explanatory variables.
- Equation (3) is a multiple regression equation using W 1 /(W 1 +W 2 ), W 3 /(W 2 +W 3 ), and W 4 as explanatory variables.
- the calorific value ratio P 4 was calculated by numerical analysis when W 1 , W 2 , W 3 , W 4 , and W 5 were varied. From the results of the numerical analysis, a regression equation including P 3 in equation (3) is analyzed as a regression equation showing the relationship between P and W 1 , W 2 , W 3 , W 4 , and W 5 . Calculated by. As a result, the results of the numerical analysis can be well reproduced by expressing P4 with a formula that adds the function f( W5 ) of W5 to P3 , as shown in formula ( 4 ) below. Ta. In equation (4), the larger W 5 becomes, the larger P 4 becomes.
- Equation (4) is a multiple regression equation using W 1 /(W 1 +W 2 ), W 3 /(W 2 +W 3 ), W 4 , and W 5 as explanatory variables.
- W 1 , W 2 , W 3 , W 4 , and W 5 are selected so as to satisfy formulas (1) to (4).
- W 1 , W 2 , W 3 , W 4 , and W 5 can be designed. At least one of W 1 , W 3 , W 4 and W 5 may be 0 (zero).
- W 1 being 0 (zero) indicates that the intervening members 1130 and 1230 and the leakage flux reducing members 1140 and 1240 are not arranged.
- W 3 being 0 (zero) means that the end-side body parts 1123, 1223 and the end-side leg parts 1124, 1224 are not arranged.
- W 4 being 0 (zero) indicates that the end leg portions 1124 and 1224 are not arranged.
- W 2 never becomes 0 (zero).
- P4 is determined based on, for example, the results of a simulation experiment or numerical analysis.
- the conductor plate is heated by induction heating or other methods with different amounts of heat input in a region corresponding to the heating amount reduction region and a region corresponding to the heating amount increasing region.
- P4 is determined using the amount of heat input that satisfies the quality required for the conductor plate.
- the crystal of a conductor plate when the conductor plate is induction heated with different regions corresponding to the heating amount reduction region, regions corresponding to the heating amount increasing region, and heat input amount.
- evaluation indices of the crystal structure and magnetic properties of the conductive plate may be calculated. In this case, if the calculated result satisfies the quality required for the conductor plate, P4 is determined using the amount of heat input at that time.
- the present invention can be used, for example, to heat a conductor plate.
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Abstract
Description
特許文献1には、1つのU形コア、2つのU形コアを隣り合わせて配置したコア、および3つ以上のU形コアを隣り合わせて配置したコアを、トランスバース方式の誘導加熱装置のコアとして用いることが開示されている。
なお、長さ、位置、大きさ、間隔等、比較対象が同じであることは、厳密に同じである場合の他、発明の主旨を逸脱しない範囲で異なるもの(例えば、設計時に定められる公差の範囲内で異なるもの)も含むものとする。また、各図において、説明および表記の都合上、説明に必要な部分のみを、必要に応じて簡略化して示す。また、各図において、x-y-z座標は、各図における向きの関係を示す。白丸(○)の中にクロスマーク(×)が付されている記号は、紙面の手前側から奥側に向かう方向が正の方向である軸であることを示す。また、白丸(○)の中に黒丸(●)が付されている記号は、紙面の奥側から手前側に向かう方向が正の方向である軸であることを示す。また、本実施形態では、x-y平面が水平面であり、z軸方向が高さ方向である場合である場合を例示する。
誘導加熱装置1000は、上側誘導器1100と、下側誘導器1200と、を有する。上側誘導器1100および下側誘導器1200は、導体板Mを間に挟んで相互に対向するように導体板Mの板厚方向(z軸方向)において間隔を有する状態で配置される。このように導体板Mの板厚方向(z軸方向)は、上側誘導器1100および下側誘導器1200が対向する方向に対応する。図1~図4に示す誘導加熱装置1000では、上側誘導器1100および下側誘導器1200が、仮想面SLを対称面とする面対称の関係にある場合を例示する。仮想面SLは、導体板Mの板厚方向(z軸方向)の中央の位置を通る面であって、幅方向(x軸方向)および長手方向(y軸方向)に平行な面である。なお、仮想面SLは、実在する面ではない。
コイル1110、1210のターン数は、それぞれN(Nは1以上の整数)である。コイル1110、1210のターン数は限定されない。図1および図2では、コイル1110、1210のターン数Nがそれぞれ5である場合を例示する。コイル1110、1210は、それぞれ、例えば、当該コイル1110、1210の中心線が、導体板Mの板面と略直交(好ましくは直交)するように配置される。コイル1110、1210は電気的に直列に接続されても良いし、電気的に並列に接続されても良い。この場合、コイル1110、1210に流れる交流電流は、同一の交流電源から供給される交流電流である。また、コイル1110、1210は電気的に接続されていなくても良い。この場合、コイル1110、1210に流れる交流電流は、別々の交流電源から供給される交流電流である。なお、電気的に直列に接続されるとは、電気回路の分野において一般的に使用される直列接続と同じ意味である。また、電気的に並列に接続されるとは、電気回路の分野において一般的に使用される並列接続と同じ意味である。以下の説明では、電気的に直列に接続されることを、必要に応じて、単に直列に接続されると称する。また、電気的に並列に接続されることを、必要に応じて、単に並列に接続されると称する。
また、図1~図4では、中央側脚部1121の先端面および端側脚部1124の先端面が、導体板Mの板面(z軸の正の方向側の表面)と間隔を有する状態で対向する場合を例示する。
また、図1~図4では、中央側脚部1221の先端面および端側脚部1224の先端面が、導体板Mの板面(z軸の負の方向側の表面)と間隔を有する状態で対向する場合を例示する。
次に、導体板に要求される品質を満たすように導体板を誘導加熱することができるように誘導加熱装置を構成するためのコア1120、1220の寸法の設計手法の一例を説明する。ここでは、加熱上流側領域が加熱量低減領域であり、加熱下流側領域が加熱量増大領域である場合のコア1120、1220の寸法の設計方法を例示する。
なお、以上説明した本発明の実施形態は、何れも本発明を実施するにあたっての具体化の例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されてはならないものである。すなわち、本発明はその技術思想、またはその主要な特徴から逸脱することなく、様々な形で実施することができる。
Claims (16)
- 導体板を間に挟んで相互に対向するように配置された上側誘導器および下側誘導器を有し、
前記導体板の板面に交番磁界を交差させることによって当該導体板を誘導加熱するトランスバース方式の誘導加熱装置であって、
前記上側誘導器および前記下側誘導器のそれぞれは、コイルと、コアと、を有し、
前記上側誘導器が有する1つの前記コアの体積と、前記下側誘導器が有する1つの前記コアの体積は、それぞれ、当該1つのコアの加熱上流側領域と、当該1つのコアの加熱下流側領域と、で異なり、
前記コアの加熱上流側領域は、当該コアの基準位置よりも前記導体板の搬送方向における上流側の領域であり、
前記コアの加熱下流側領域は、当該コアの基準位置よりも前記導体板の搬送方向における下流側の領域であり、
前記コアの基準位置は、当該コアのコイル最上流端位置と、当該コアのコイル最下流端位置と、の加熱長方向における中央の位置であり、
前記加熱長方向は、前記導体板の搬送方向に平行な方向であり、
前記コアのコイル最上流端位置は、当該コアに対して配置されている前記コイルの端部のうち、前記加熱長方向において最も前記上流側に位置する端部の位置であり、
前記コアのコイル最下流端位置は、当該コアに対して配置されている前記コイルのうち、前記加熱長方向において最も前記下流側に位置する前記コイルの端部の位置であり、
前記上側誘導器が有する1つの前記コアには、同一の主磁束が流れ、
前記下側誘導器が有する1つの前記コアには、同一の主磁束が流れ、
前記主磁束は、前記導体板を通る磁束である、トランスバース方式の誘導加熱装置。 - 前記上側誘導器および前記下側誘導器のそれぞれは、漏れ磁束を低減するための漏れ磁束低減部材を有し、
前記漏れ磁束は、前記コアから発生する磁束のうち、前記導体板を通らない磁束を含み、
前記漏れ磁束低減部材は、加熱量低減領域に配置され、
前記加熱量低減領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が小さい方の領域である、請求項1に記載のトランスバース方式の誘導加熱装置。 - 前記漏れ磁束低減部材は、非磁性材料を有する、請求項2に記載のトランスバース方式の誘導加熱装置。
- 前記漏れ磁束低減部材は、銅を有する、請求項3に記載のトランスバース方式の誘導加熱装置。
- 前記漏れ磁束低減部材は、加熱量増大領域に配置されず、
前記加熱量増大領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が大きい方の領域である、請求項2~4のいずれか1項に記載のトランスバース方式の誘導加熱装置。 - 前記漏れ磁束低減部材は、前記コイルよりも背面側に配置され、
前記背面側は、前記導体板が存在する側とは反対側である、請求項2~5のいずれか1項に記載のトランスバース方式の誘導加熱装置。 - 前記上側誘導器および前記下側誘導器のそれぞれは、前記漏れ磁束低減部材と前記コイルとを電気的に絶縁するための介在部材を有する、請求項2~6のいずれか1項に記載のトランスバース方式の誘導加熱装置。
- 前記漏れ磁束低減部材は、1枚または複数枚の板を有し、
前記板の板面は、前記導体板の板面と略平行である、請求項2~7のいずれか1項に記載のトランスバース方式の誘導加熱装置。 - 加熱量低減領域における前記コアの体積に対する、加熱量増大領域における前記コアの体積の比は、5.1以上であり、
前記加熱量低減領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が小さい方の領域であり、
前記加熱量増大領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が大きい方の領域である、請求項1~8のいずれか1項に記載のトランスバース方式の誘導加熱装置。 - 前記コアは、
前記コイルの中空領域に配置される中央側脚部と、
前記中央側脚部に流れる主磁束と同一の主磁束が流れる中央側胴部と、を有し、
前記中央側脚部の先端面は、前記導体板と間隔を有する状態で対向し、
前記中央側胴部は、前記中央側脚部よりも加熱量増大領域側の領域を含み、
前記加熱量増大領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が大きい方の領域であり、
前記中央側胴部は、前記コイルよりも背面側に配置され、
前記背面側は、前記導体板が存在する側とは反対側である、請求項1~9のいずれか1項に記載のトランスバース方式の誘導加熱装置。 - 前記上側誘導器および前記下側誘導器のそれぞれは、漏れ磁束を低減するための漏れ磁束低減部材を有し、
前記漏れ磁束は、前記コアから発生する磁束のうち、前記導体板を通らない磁束を含み、
前記漏れ磁束低減部材は、加熱量低減領域に配置され、
前記加熱量低減領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が小さい方の領域であり、
前記中央側胴部の前記加熱長方向の長さは、前記漏れ磁束低減部材の加熱長方向の長さよりも長い、請求項10に記載のトランスバース方式の誘導加熱装置。 - 前記コアは、前記中央側胴部に流れる主磁束と同一の主磁束が流れる端側胴部を有し、
前記端側胴部は、前記コイルよりも前記背面側に配置され、且つ、前記中央側脚部および前記コイルよりも前記加熱量増大領域側に配置される、請求項10または11に記載のトランスバース方式の誘導加熱装置。 - 前記コアは、
前記端側胴部に流れる主磁束と同一の主磁束が流れる端側脚部を有し、
前記端側脚部は、前記中央側胴部および前記コイルよりも前記加熱量増大領域側に配置され、且つ、前記端側胴部よりも前記導体板側に配置され、
前記端側脚部の先端面は、前記導体板と間隔を有する状態で対向する、請求項12に記載のトランスバース方式の誘導加熱装置。 - 前記端側脚部の先端面よりも前記コイルの方が前記導体板側に配置される、請求項13に記載のトランスバース方式の誘導加熱装置。
- 前記中央側脚部および前記中央側胴部以外の前記コアの部分が加熱量低減領域に存在せず、
前記加熱量低減領域は、前記加熱上流側領域と、前記加熱下流側領域と、のうち、前記コアの体積が小さい方の領域である、請求項10~14のいずれか1項に記載のトランスバース方式の誘導加熱装置。 - 前記加熱上流側領域における前記コアの体積よりも、前記加熱下流側領域における前記コアの体積の方が大きい、請求項1~15のいずれか1項に記載のトランスバース方式の誘導加熱装置。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23846399.6A EP4565004A4 (en) | 2022-07-29 | 2023-07-21 | TRANSVERSE TYPE INDUCTION HEATING DEVICE |
| JP2024537671A JPWO2024024668A1 (ja) | 2022-07-29 | 2023-07-21 | |
| US18/872,753 US20250351238A1 (en) | 2022-07-29 | 2023-07-21 | Transverse flux induction heating device |
| KR1020257000325A KR102880535B1 (ko) | 2022-07-29 | 2023-07-21 | 트랜스 버스 방식의 유도 가열 장치 |
| CN202380053730.5A CN119586321A (zh) | 2022-07-29 | 2023-07-21 | 横向方式的感应加热装置 |
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| JP2022-121377 | 2022-07-29 | ||
| JP2022121377 | 2022-07-29 |
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| US (1) | US20250351238A1 (ja) |
| EP (1) | EP4565004A4 (ja) |
| JP (1) | JPWO2024024668A1 (ja) |
| KR (1) | KR102880535B1 (ja) |
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| WO (1) | WO2024024668A1 (ja) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113325A (ja) * | 1981-12-28 | 1983-07-06 | Nippon Steel Corp | 金属帯の加熱方法 |
| JPS6398993A (ja) * | 1986-10-14 | 1988-04-30 | 住友金属工業株式会社 | 誘導加熱装置 |
| JPH0269959U (ja) | 1988-11-16 | 1990-05-28 | ||
| JP2010027470A (ja) | 2008-07-22 | 2010-02-04 | Nippon Steel Corp | トランスバース方式の誘導加熱装置 |
| JP2010108605A (ja) * | 2008-10-28 | 2010-05-13 | Shimada Phys & Chem Ind Co Ltd | 高周波誘導加熱装置 |
| JP2010257894A (ja) | 2009-04-28 | 2010-11-11 | Nippon Steel Engineering Co Ltd | 金属板の誘導加熱装置 |
| WO2013015297A1 (ja) * | 2011-07-28 | 2013-01-31 | Jfeスチール株式会社 | 鋼板の加熱方法および加熱装置 |
| JP2022121377A (ja) | 2021-02-08 | 2022-08-19 | フォルシアクラリオン・エレクトロニクス株式会社 | 外界認識装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0269959A (ja) | 1988-09-05 | 1990-03-08 | Seiko Epson Corp | 半導体装置 |
| KR20000076143A (ko) * | 1997-03-13 | 2000-12-26 | 울후 마그너손 | 유도 가열 유닛용 코어 구조체 |
| CA3012808C (en) * | 2016-03-30 | 2020-08-04 | Nippon Steel & Sumitomo Metal Corporation | Induction heating device and induction heating method |
| JP6734328B2 (ja) * | 2018-08-06 | 2020-08-05 | 株式会社京三製作所 | リアクトル |
| CN215453329U (zh) * | 2021-08-27 | 2022-01-07 | 江阴中意电气有限公司 | 薄板感应加热器 |
-
2023
- 2023-07-21 WO PCT/JP2023/026773 patent/WO2024024668A1/ja not_active Ceased
- 2023-07-21 JP JP2024537671A patent/JPWO2024024668A1/ja active Pending
- 2023-07-21 CN CN202380053730.5A patent/CN119586321A/zh active Pending
- 2023-07-21 EP EP23846399.6A patent/EP4565004A4/en active Pending
- 2023-07-21 KR KR1020257000325A patent/KR102880535B1/ko active Active
- 2023-07-21 US US18/872,753 patent/US20250351238A1/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113325A (ja) * | 1981-12-28 | 1983-07-06 | Nippon Steel Corp | 金属帯の加熱方法 |
| JPS6398993A (ja) * | 1986-10-14 | 1988-04-30 | 住友金属工業株式会社 | 誘導加熱装置 |
| JPH0269959U (ja) | 1988-11-16 | 1990-05-28 | ||
| JP2010027470A (ja) | 2008-07-22 | 2010-02-04 | Nippon Steel Corp | トランスバース方式の誘導加熱装置 |
| JP2010108605A (ja) * | 2008-10-28 | 2010-05-13 | Shimada Phys & Chem Ind Co Ltd | 高周波誘導加熱装置 |
| JP2010257894A (ja) | 2009-04-28 | 2010-11-11 | Nippon Steel Engineering Co Ltd | 金属板の誘導加熱装置 |
| WO2013015297A1 (ja) * | 2011-07-28 | 2013-01-31 | Jfeスチール株式会社 | 鋼板の加熱方法および加熱装置 |
| JP2022121377A (ja) | 2021-02-08 | 2022-08-19 | フォルシアクラリオン・エレクトロニクス株式会社 | 外界認識装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4565004A4 |
Also Published As
| Publication number | Publication date |
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| JPWO2024024668A1 (ja) | 2024-02-01 |
| EP4565004A1 (en) | 2025-06-04 |
| CN119586321A (zh) | 2025-03-07 |
| US20250351238A1 (en) | 2025-11-13 |
| KR102880535B1 (ko) | 2025-11-05 |
| KR20250023469A (ko) | 2025-02-18 |
| EP4565004A4 (en) | 2025-11-19 |
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