KR101877118B1 - Superconducting dc induction heating apparatus using magnetic field displacement - Google Patents

Superconducting dc induction heating apparatus using magnetic field displacement Download PDF

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Publication number
KR101877118B1
KR101877118B1 KR1020160074046A KR20160074046A KR101877118B1 KR 101877118 B1 KR101877118 B1 KR 101877118B1 KR 1020160074046 A KR1020160074046 A KR 1020160074046A KR 20160074046 A KR20160074046 A KR 20160074046A KR 101877118 B1 KR101877118 B1 KR 101877118B1
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South Korea
Prior art keywords
magnetic field
target member
heating target
shape
superconducting
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KR1020160074046A
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Korean (ko)
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KR20170141062A (en
Inventor
박민원
최종호
유인근
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창원대학교 산학협력단
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Priority to KR1020160074046A priority Critical patent/KR101877118B1/en
Priority to PCT/KR2016/014466 priority patent/WO2017217621A1/en
Publication of KR20170141062A publication Critical patent/KR20170141062A/en
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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
    • H05B6/36—Coil arrangements
    • H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • 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
    • H05B6/10—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
    • 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
    • H05B6/40—Establishing desired heat distribution, e.g. to heat particular parts of workpieces

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Induction Heating (AREA)

Abstract

The present invention relates to a superconducting DC induction heating apparatus using magnetic field displacement, and more particularly, to a superconductivity DC induction heating apparatus using a magnetic field displacement according to an embodiment of the present invention, A superconducting magnet positioned symmetrically and generating a magnetic field in accordance with an applied direct current; A movable member passing through the inside of the superconducting magnet and having an angle in the longitudinal direction at an end portion shape facing the heating target member to induce a magnetic field displacement according to an angle in the longitudinal direction to the heating target member; And a rotation unit connected to the heating target member via a rotation shaft to rotate the heating target member.

Description

TECHNICAL FIELD [0001] The present invention relates to a superconducting DC induction heating apparatus using a magnetic field displacement,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting DC induction heating apparatus using magnetic field displacement, and more particularly, to a superconducting DC induction heating apparatus using a magnetic field displacement, To a superconducting direct current induction heating apparatus using a magnetic field displacement capable of being induced in a heating target member.

A superconductor is an element whose electrical resistance becomes '0' at a cryogenic temperature. It has already been used in a variety of applications because it offers advantages of high magnetic field, low loss, and miniaturization compared to conventional copper (cu) conductors.

Superconducting magnets are magnets made from these superconductors. Superconducting magnets are used in MRI, NMR, particle accelerators, and magnetic separators to improve efficiency and performance. In addition, application techniques are continuously being studied throughout the industry such as power cables, superconducting transformers, and superconducting motors. It is applied to the steel industry as one of the application fields. In the steel industry, research and development of large-capacity induction heating devices is active.

The heating method for the induction heating device can be classified into AC induction heating and DC induction heating.

AC induction heating is a method of applying an AC current to a copper magnet to generate a time-varying magnetic field. However, since AC induction heating uses copper magnets, the total energy efficiency of the system is only about 50 to 60% due to the heat generated by the resistance of the copper magnets. Therefore, superconducting magnets are used instead of copper magnets. This is to improve energy conversion efficiency.

However, there is a disadvantage in that magnetization loss occurs in the superconducting wire as the material of the superconducting magnet, when the alternating current is applied. This means that cooling is necessary to maintain the superconducting state in a cryogenic operating environment. Therefore, there is a problem that the operation cost is increased together with the facility cost of the cooling apparatus.

On the other hand, DC induction heating is a method of applying a DC current to a superconducting magnet to generate a uniform magnetic field and forcing the product to rotate in the magnetic field by a motor. This DC induction heating has the advantage that the overall system efficiency of the induction heating apparatus can be improved by 90% or more without causing the heat loss of the superconducting magnet by using the DC current. Since the energy is transmitted in proportion to the square of the magnetic field generated in the superconducting magnet, the heating time for the heating target product can be shortened and the productivity can be further improved.

The DC induction heating method has been widely applied to induction heating apparatuses. Race track type superconducting magnets have been widely used as superconducting magnets for DC induction heating.

1 is an explanatory view for explaining a conventional racetrack type superconducting magnet.

1, the object 1 to be heated is placed at the center, and a superconducting magnet 10 of a racetrack type is placed on the side of the object 1 to be heated. The superconducting magnets 10 are provided in a pair so as to be symmetrical to each other on the side of the object 1 to be heated.

The object 1 to be heated and the superconducting magnet 10 are accommodated in a cryogenic container and the magnetic field is obtained by rotating the object 1 to be heated and supplying a DC current to the superconducting magnet 10.

On the other hand, a demanded company desires a heating target product, or a temperature deviation is required for each part of the heating target product according to a heating target product to be produced.

However, since the DC induction heating apparatus using the superconducting magnet maintains the same gap as that of the object to be heated, the temperature characteristics of the object to be heated can not be satisfied according to the demand enterprise.

Korean Registered Patent No. 10-1468312 (Registered on November 26, 2014)

Embodiments of the present invention are directed to a superconducting device using superconducting magnets capable of inducing a magnetic field displacement according to an angle in a longitudinal direction to a heating target member by forming an angle in a longitudinal direction on a shape of a superconducting magnet facing a heating target member, Thereby providing a DC induction heating apparatus.

In the embodiments of the present invention, the longitudinal direction of the superconducting magnet penetrates the inside of the superconducting magnet, and an angle in the longitudinal direction is formed in the shape of the end facing the heating target member to induce the magnetic field displacement according to the angle in the longitudinal direction. The present invention provides a superconducting DC induction heating apparatus using magnetic field displacement capable of easily changing the magnetic field displacement by adjusting the angle formed so that the magnetic field displacement in the direction of the magnetic field is changed.

The embodiments of the present invention are characterized in that the movable member is moved in the longitudinal direction to the shape facing the heating target member through the alternate angular fixtures formed at different angles in the longitudinal direction and attached to the end portions of the movable member facing the heating target member Which is capable of easily changing the magnetic field displacement by forming different angles of the magnetic field displacement of the superconducting DC induction heating device.

According to a first aspect of the present invention, there is provided a superconducting magnet which is positioned symmetrically with respect to a heating target member by a predetermined distance and generates a magnetic field in accordance with an applied direct current; A movable member passing through the inside of the superconducting magnet and having an angle in the longitudinal direction at an end portion shape facing the heating target member to induce a magnetic field displacement according to an angle in the longitudinal direction to the heating target member; And a rotating unit connected to the object to be heated through a rotating shaft to rotate the object to be heated. The superconducting DC induction heating apparatus using the magnetic field displacement may be provided.

The movable member can be adjusted in the angle so that the magnetic field displacement in the longitudinal direction of the heating target member is variable.

The movable member may be moved in a direction opposite to the heating object member and adjusted to a distance between the heating target member and the heating object member in which one side magnetic field in the longitudinal direction of the heating target member is maximized.

The movable member may be adjusted to an interval between the heating target member and the heating target member in which one side magnetic field in the longitudinal direction of the heating target member becomes the maximum when the movable member is any one of the predetermined operating current values.

The apparatus is characterized in that an angle in the longitudinal direction is formed and attached to an end portion of the movable member facing the heating target member so that the movable member forms an angle in the longitudinal direction in the shape facing the heating target member And may further include an interchangeable jig.

The apparatus may further include a freezing part including a cooling container in which the superconducting magnet is housed, and a freezer that cools the superconducting magnet stored in the cooling container.

The superconducting magnet may have any one of a circular shape, a race track shape, a rectangular shape, a saucer shape, and a trumpet shape.

According to a second aspect of the present invention, there is provided a superconducting magnet for generating a magnetic field in accordance with an applied direct current; Shaped or E shape passing through the inside of the superconducting magnet and having at least one portion opened, and the heating object member is positioned between the end portions of the C shape or the E shape, and an end portion shape A fixed member having an angle in the longitudinal direction formed therein to guide a magnetic field displacement according to an angle in the longitudinal direction to the heating target member; And a rotating unit connected to the object to be heated through a rotating shaft to rotate the object to be heated. The superconducting DC induction heating apparatus using the magnetic field displacement may be provided.

The apparatus is characterized in that an angle in the longitudinal direction is formed and attached to an end portion of the stationary member facing the heating target member so that the stationary member forms an angle in the longitudinal direction in a shape facing the heating target member And may further include an interchangeable jig.

The apparatus may further include a freezing part including a cooling container in which the superconducting magnet is housed, and a freezer that cools the superconducting magnet stored in the cooling container.

The superconducting magnet may have any one of a circular shape, a race track shape, a rectangular shape, a saucer shape, and a trumpet shape.

Embodiments of the present invention can induce a magnetic field displacement according to an angle in a longitudinal direction to a heating target member by forming an angle in a longitudinal direction in a shape in which a superconducting magnet faces a heating target member.

In the embodiments of the present invention, the longitudinal direction of the superconducting magnet penetrates the inside of the superconducting magnet, and an angle in the longitudinal direction is formed in the shape of the end facing the heating target member to induce the magnetic field displacement according to the angle in the longitudinal direction. The magnetic field displacement can be easily varied by adjusting the angle formed so that the magnetic field displacement in the direction of the magnetic field is varied.

The embodiments of the present invention are characterized in that the movable member is moved in the longitudinal direction to the shape facing the heating target member through the alternate angular fixtures formed at different angles in the longitudinal direction and attached to the end portions of the movable member facing the heating target member Respectively, so that the magnetic field displacement can be easily varied.

Embodiments of the present invention can produce the highest quality extruded product by the demanding customer by changing the magnetic field displacement according to the product desired by the demanding customer.

1 is an explanatory view for explaining a conventional racetrack type superconducting magnet.
2 is an explanatory diagram for explaining a temperature distribution of a metal billet necessary for a metal extrusion equipment in a demand enterprise.
3 and 4 are a structural view and an internal structural view of a superconducting DC induction heating apparatus using a magnetic field displacement according to a first embodiment of the present invention.
FIG. 5 is a view showing a magnetic field displacement according to an angle change in the superconducting DC induction heating apparatus according to the first embodiment of the present invention. FIG.
6 is a configuration diagram of a superconductivity DC induction heating apparatus using a magnetic field displacement according to a second embodiment of the present invention.
FIG. 7 is a graph showing a temperature displacement and a magnetic field displacement of a heating target member according to an angle change in the superconductivity DC induction heating apparatus according to the second embodiment of the present invention. FIG.
8 is a structural view showing a structure in which a replaceable angle jig is attached to a superconducting DC induction heating apparatus according to a second embodiment of the present invention.
FIG. 9 and FIG. 10 are structural diagrams showing a structure in which a replaceable angle jig is not attached to a superconducting DC induction heating apparatus according to the first embodiment of the present invention, and an attached structure.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention. In describing the embodiments of the present invention, description of technical contents which are well known in the art to which the present invention belongs and which are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given to different drawings. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that it has the same function in different embodiments, and the function of each component is different from that of the corresponding embodiment Based on the description of each component in FIG.

2 is an explanatory diagram for explaining a temperature distribution of a metal billet necessary for a metal extrusion equipment in a demand enterprise.

As shown in FIG. 2, in order to produce the best extruded product through the metal extrusion equipment, the temperature distribution of the metal billet is higher than the hot temperature at the extrusion inlet of the metallic mold ). In addition, the temperature distribution of the metal billet should have a minimum temperature at the extrusion outlet portion of the extrusion die.

In the superconducting DC induction heating apparatus used in such a metal extrusion apparatus, a temperature deviation according to the metal length is necessarily required depending on the length or diameter of the metal billet to be extruded. Therefore, the superconducting DC induction heating apparatus using the magnetic field displacement according to the embodiment of the present invention is capable of satisfying the temperature deviation according to the length of the metal billet by using the magnetic field displacement.

3 and 4 are a structural view and an internal structural view of a superconducting DC induction heating apparatus using a magnetic field displacement according to a first embodiment of the present invention.

3, a superconducting DC induction heating apparatus 100 using a magnetic field displacement according to a first embodiment of the present invention includes a superconducting magnet 110, a movable member 120, and a rotation unit 130. [ Here, the superconducting DC induction heating apparatus 100 may further include a grip unit 140, a support unit 150, and a freezing unit 160.

The first embodiment of the present invention relates to a superconducting DC induction heating apparatus 100 to which a movable member 120 is applied. Here, the superconducting direct current induction heating apparatus 100 refers to a direct current (DC) induction heating apparatus. The superconducting DC induction heating apparatus 100 refers to a device that heats a heating target member 101 to a desired temperature in a uniform magnetic field. The uniform magnetic field can be obtained when a DC current is supplied to the superconducting magnet, and the larger the magnetic field generated in the superconducting magnet, the greater the energy transfer becomes. Of course, the magnetic field increases in proportion to the current flowing through the superconducting magnet, the number of turns, and the number of coils, and decreases in inverse proportion to the distance to the heating target member 101. Therefore, the closer the distance between the superconducting magnet and the heating target member 101 is, the larger the magnetic field can be obtained and the energy that can be transmitted becomes larger.

Accordingly, in the first embodiment of the present invention, the heating object member 101 is able to induce a magnetic field displacement having a constant slope through the movable member 120 whose predetermined angle is formed or whose angle is formed, A direct current induction heating apparatus 100 is provided.

3 and 4 according to the first embodiment of the present invention will now be described in detail with reference to the drawings.

The superconducting magnets 110 are positioned symmetrically with respect to the heating target member 101 by a predetermined distance. The superconducting magnet 110 generates a magnetic field in accordance with the applied direct current. Here, in the embodiment of the present invention, the shape of the superconducting magnet 110 is not limited to the shape of the race track, but a superconducting magnet having a different shape such as a circular shape can be applied. For example, the superconducting magnet 110 may have any one of a circular shape, a race track shape, a rectangular shape, a saucer shape, and a trumpet shape, and is not limited to a specific shape.

The movable member 120 penetrates the inside of the superconducting magnet 110 and forms an angle in the longitudinal direction at the end portion shape facing the heating target member 101 so that the magnetic field displacement according to the angle in the longitudinal direction Is guided to the member (101). In addition, the movable member 120 moves in the direction opposite to the heating target member 101 while penetrating the inside of the superconducting magnet 110. [ Thus, the movable member 120 guides the generated magnetic field to the heating target member 101. [ For example, the movable member 120 may be made of a metal iron core.

Here, the movable member 120 can be adjusted in its angle so that the magnetic field displacement in the longitudinal direction of the heating target member 101 is variable. The movable member 120 can be adjusted to a distance between the heating target member 101 and the heating target member 101 in which the one magnetic field of the heating target member 101 is maximized.

The superconducting DC induction heating apparatus 100 may further include an angle adjusting unit for adjusting the distance between the heating target member 101 and the movable member 120 and the angle of the heating target member 101 in the longitudinal direction . Here, the movable member 120 may be horizontal with the heating target member 101 without forming an angle in the longitudinal direction or forming an angle with the shape of the end facing the heating target member 101.

Here, the angle adjusting unit can adjust the angle with the heating target member 101 within a predetermined angle range by moving the movable member 120 which is horizontal with the heating target member 101. At this time, the angle adjusting unit brings one side of the facing first and second movable members (121, 122) close to the heating target member (101), and makes the other side fall off the heating target member (101). Thus, the angle adjusting portion can form an angle between the heating target member 101 and the movable member 120. [ When a predetermined angle is formed in the movable member 101, the angle adjusting unit can adjust the angle in accordance with the target angle in consideration of the predetermined angle.

The rotation unit 130 is connected to the heating target member 101 via a rotation shaft to rotate the heating target member 101.

On the other hand, the gripper 140 grips the rotation shaft so that the heating target member 101 is rotated through the rotation shaft.

The support unit 150 supports the superconducting DC induction heating apparatus 100 through a support structure connected to the movable member 120, respectively. Here, the general DC induction heating furnace is made of a material which is not magnetized, whereas the support 150 according to the embodiment of the present invention may be made of magnetized or magnetic material.

The freezing section 160 is composed of a cooling vessel and a freezer. A superconducting magnet (110) is housed inside the cooling vessel. The refrigerator cools the superconducting magnet 110 housed inside the cooling vessel.

As shown in FIG. 4, the superconducting magnet 110 includes first and second superconducting magnets 111 and 112.

The superconducting magnet (110) of the superconducting DC induction heating apparatus (100) includes a pair of superconducting magnets. For example, the superconducting magnet 110 is in the form of a race track type. Of course, as for the type of the superconducting magnet 110, a superconducting magnet formed in a circular shape or the like may be applied in addition to the shape of the race track as described above. Hereinafter, the pair of superconducting magnets 110 will be described as the first superconducting magnet 111 and the second superconducting magnet 112.

The first superconducting magnet 111 and the second superconducting magnet 112 are spaced apart from each other. The first and second superconducting magnets 111 and 112 are positioned symmetrically with respect to the heating target member 101 by a predetermined distance.

A heating target member 101 is positioned between the first superconducting magnet 111 and the second superconducting magnet 112. The heating target member 101 may be made of a metal such as aluminum or copper as a non-magnetic material. According to the embodiment, the heating target member 101 is formed in a cylindrical shape and can be described as a metal billet.

On the other hand, the movable member 120 is composed of the first and second movable members 121 and 122. The first and second movable members 121 and 122 penetrate the inside of the first and second superconducting magnets 111 and 112 respectively and form an angle in the longitudinal direction at the end portion shape facing the heating target member 101 Respectively. The first and second movable members 121 and 122 move in the direction opposite to the heating target member 101. [

The movable member 120 is provided symmetrically with respect to the heating target member 101 as a center. The movable member 120 is also provided as a pair and the first movable member 121 is disposed on the first superconducting magnet 111 and the second movable member 122 is disposed on the second superconducting magnet 112 side do. The first movable member 121 and the second movable member 122 are formed in the same shape and size as each other. In the embodiment, the movable member 121 and the second movable member 122 are formed as a hexahedron having an angle in the longitudinal direction. The first movable member 121 and the second movable member 122 are located symmetrically with respect to the heating target member 101 at the center. In addition, a portion of the first movable member 121 and the second movable member 122 are positioned through the incisions of the first superconducting magnet 111 and the second superconducting magnet 112.

Although the first movable member 121 and the second movable member 122 are shown in contact with the heating target member 101, The spacing distance from the heating target member 101 is adjusted. Preferably, the spacing distance is a distance at which one magnetic field value of the heating target member 101 can maintain the highest magnetic field value according to the outer size of the heating target member 101.

FIG. 5 is a view showing a magnetic field displacement according to an angle change in the superconducting DC induction heating apparatus according to the first embodiment of the present invention. FIG.

As shown in Fig. 5 (a), both movable members 120 constituted by two opposing superconducting magnets 110 make a constant magnetic field displacement of the magnetic field by forming an angle in the longitudinal direction in the opposing shape You can give. Here, the movable member 120 may be a metal billet of an iron core. Thus, the results of the magnetic field displacements of the magnetic field generated through the angles formed in the longitudinal direction on the opposite shapes of the movable members 120 are shown.

As shown in FIG. 5 (b), when the angle of the movable member 120 changes from 0 to 5 degrees, the magnetic flux density norm B (T) (T).

6 is a configuration diagram of a superconductivity DC induction heating apparatus using a magnetic field displacement according to a second embodiment of the present invention.

6, a superconducting DC induction heating apparatus 200 using a magnetic field displacement according to a second embodiment of the present invention includes a superconducting magnet 210, a stationary member 220, and a rotation unit 130. Here, the superconducting DC induction heating apparatus 200 may further include a grip unit 140, a support unit 150, and a freezing unit 160. 6, the rotating part 130, the grip part 140, the supporting part 150 and the freezing part 160 are not shown. However, in the superconducting DC induction heating device 200 using the magnetic field displacement according to the second embodiment of the present invention May include the same components as those in Figs. 3 and 4. The detailed description of these components will be replaced with the description of FIG. 3 and FIG. 4, and the superconducting magnet 210 and the stationary member 220 will be described.

Hereinafter, the specific configuration and operation of each component of the superconducting DC induction heating apparatus 200 using the magnetic field displacement of FIG. 6 according to the second embodiment of the present invention will be described.

The superconducting magnet 210 generates a magnetic field in accordance with the applied direct current. Although one superconducting magnet is shown in Fig. 6, it is not limited to a specific number. The superconducting magnets 210 may also be positioned symmetrically with respect to the heating target member 101 by a predetermined distance. Here, in the second embodiment of the present invention, the shape of the superconducting magnet 210 is not limited to the shape of the race track, but a superconducting magnet having a different shape such as a circular shape can be applied. For example, the superconducting magnet 210 may have any one of a circular shape, a race track shape, a rectangular shape, a saucer shape, and a trumpet shape, and is not limited to a specific shape.

The stationary member 220 penetrates the interior of the superconducting magnet 110. The stationary member 220 has a shape in which at least one portion is opened. The heating target member 101 may be composed of at least one heating target member, and may be located at each opened portion. For example, the stationary member 220 may be in a U-shape or an E-shape. In the superconducting DC induction heating apparatus 200 according to the second embodiment of the present invention shown in FIG. 6, the stationary member 220 passing through one superconducting magnet 210 has a C shape.

The stationary member 220 has the heating target member 101 positioned between the end portions of the C shape or the E shape and an angle in the longitudinal direction is formed at an end portion shape facing the heating target member 101. Accordingly, the stationary member 220 induces a magnetic field displacement according to the angle in the longitudinal direction to the heating target member 101. [ For example, the stationary member 220 may comprise a metallic billet of iron cores. Here, the fixed member 220 can be adjusted through the interchangeable jig such as an angle formed so that the magnetic field displacement in the longitudinal direction of the heating subject member 101 is variable.

FIG. 7 is a graph showing a temperature displacement and a magnetic field displacement of a heating target member according to an angle change in the superconductivity DC induction heating apparatus according to the second embodiment of the present invention. FIG.

7A and 7B, the end portion of the stationary member 220 facing the heating target member 101 is inclined at an angle of 0 to 5 degrees with respect to the beveled angles . Accordingly, the magnetic field generated according to the converted angle has a displacement with respect to the magnetic field.

For example, the magnetic flux density generated at an angle may have a magnetic field displacement of at least 0.18 (T) at a maximum of 0.32 (T).

During heating, the heating target member 101 can be heated with such a temperature deviation. For example, after 30 seconds of heating, a metal billet with a maximum temperature of 89 degrees and a minimum temperature of 53.5 degrees has a longitudinal temperature shift.

8 is a structural view showing a structure in which a replaceable angle jig is attached to a superconducting DC induction heating apparatus according to a second embodiment of the present invention.

8A, in the superconducting DC induction heating apparatus 200 according to the second embodiment of the present invention, the replaceable angular fixture 270 can be detachably attached to the stationary member 220. As shown in FIG.

The interchangeable jig 270 has an angle in the longitudinal direction. The interchangeable jig 270 is detachably attached to the end of the stationary member 220 facing the heating target member 101. The interchangeable jig 270 forms an angle in the longitudinal direction in the shape in which the stationary member 220 faces the heating target member 101.

As shown in FIG. 8 (b), the interchangeable jig 270 may be formed of a total of six jig sets with an angle of 0 to 5 degrees with respect to one fixed member 220. The user can select and attach the interchangeable jig 270 which is desired in an angle range of 0 to 5 degrees.

FIG. 9 and FIG. 10 are structural diagrams showing a structure in which a replaceable angle jig is not attached to a superconducting DC induction heating apparatus according to the first embodiment of the present invention, and an attached structure.

9 shows a structure in which the interchangeable jaws 170 are not attached and an angle in the longitudinal direction of the heating target member 101 is formed on the movable member 120. In Fig.

9 (a) and 9 (b), a superconducting DC induction heating apparatus 100 using a magnetic field displacement according to the first embodiment of the present invention includes a superconducting magnet 110, a movable member 120 A rotation unit 130, a grip unit 140, a support unit 150, and a freezing unit 160. Here, the superconducting magnet 110 is composed of the first and second superconducting magnets 111 and 112. The movable member 120 consists of first and second movable members 121 and 122. The freezing unit 160 includes a cooling container 161 and a freezer 162.

In the superconducting DC induction heating apparatus 100 according to the first embodiment of the present invention, the replaceable angle jig 170 is not attached. The first and second movable members 121 and 122 are formed at an angle in the longitudinal direction at an end portion shape facing the heating target member 101.

As another example, FIG. 10 shows a structure in which an interchangeable jig having an angle in the longitudinal direction of the heating target member 101 is attached.

10 (a) and 10 (b), a superconducting DC induction heating apparatus 100 using a magnetic field displacement according to the first embodiment of the present invention includes a superconducting magnet 110, a movable member 120, A rotation unit 130, a grip unit 140, a support unit 150, and a freezing unit 160.

Here, the superconducting DC induction heating apparatus 100 according to the first embodiment of the present invention is provided with a replacement-type angular fixture 170 in which any one of the angles is formed. The interchangeable jig 170 consists of first and second interchangeable jigs 171 and 172. The interchangeable jig 170 is attached to an end portion of the movable member 120 which is formed with an angle in the longitudinal direction and faces the heating target member 101. The interchangeable jig 170 forms an angle in the longitudinal direction in the shape in which the movable member 120 faces the heating target member 101.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100, 200: superconducting direct current induction heating device
110, 210: superconducting magnet
120: movable member
220: Fixed member
130:
140:
150: Support
160:
170, 270: Interchangeable angle jig
111 and 112: first and second superconducting magnets
121 and 122: first and second movable members

Claims (11)

A superconducting magnet positioned symmetrically with respect to a heating target member by a predetermined distance and generating a magnetic field in accordance with an applied direct current;
A movable member passing through the inside of the superconducting magnet and having an angle in the longitudinal direction at an end portion shape facing the heating target member to induce a magnetic field displacement according to an angle in the longitudinal direction to the heating target member;
A rotation unit connected to the heating target member via a rotation shaft to rotate the heating target member; And
An angle of a longitudinal direction is formed and is attached to an end portion of the movable member facing the heating target member so that the movable member forms an angle in a longitudinal direction in a shape facing the heating target member, ;
Including the
The interchangeable jig
Wherein the heating object member is replaced in accordance with the heating object member to be extruded so as to satisfy a temperature deviation according to a length or a diameter of the superconducting duct. The method according to claim 1,
The movable member
And the magnetic field displacement is adjusted so that the magnetic field displacement in the longitudinal direction of the heating target member is varied. The method according to claim 1,
The movable member
And a magnetic field displacement which is adjusted by an interval between the object to be heated and a heating target member in which one side magnetic field in the longitudinal direction of the heating target member is maximized by moving in a direction opposite to the heating target member. 3. The method of claim 2,
The movable member
And a magnetic field displacement which is adjusted by an interval between the heating target member and a heating target member in which one side magnetic field in the longitudinal direction of the heating target member is maximized when the heating current is one of a predetermined operating current range. delete The method according to claim 1,
Wherein the superconducting magnet is housed in a cooling vessel, and a freezer section, which is made up of a refrigerator for cooling the superconducting magnet stored in the inside of the cooling vessel,
Wherein the superconducting DC induction heating apparatus further comprises a magnetic field displacement. The method according to claim 1,
The superconducting magnet
A superconducting DC induction heating apparatus using magnetic field displacement, which is a shape of a circular shape, a race track shape, a square shape, a plate shape, and a trumpet shape. A superconducting magnet for generating a magnetic field in accordance with an applied direct current;
Shaped or E shape passing through the inside of the superconducting magnet and having at least one portion opened, and a heating object member is positioned between ends of the C shape or the E shape, and the shape of the end portion facing the heating target member A stationary member formed with an angle in the longitudinal direction to guide a magnetic field displacement according to an angle in the longitudinal direction to the heating target member;
A rotation unit connected to the heating target member via a rotation shaft to rotate the heating target member; And
An angle of a longitudinal direction is formed and is attached to an end portion of the stationary member facing the heating target member so that the stationary member forms an angle in a longitudinal direction in a shape facing the heating target member, ;
Lt; / RTI >
The interchangeable jig
Wherein the heating object member is replaced in accordance with the heating object member to be extruded so as to satisfy a temperature deviation according to a length or a diameter of the superconducting duct. delete 9. The method of claim 8,
Wherein the superconducting magnet is housed in a cooling vessel, and a freezer section, which is made up of a refrigerator for cooling the superconducting magnet stored in the inside of the cooling vessel,
Wherein the superconducting DC induction heating apparatus further comprises a magnetic field displacement. 9. The method of claim 8,
The superconducting magnet
A superconducting DC induction heating apparatus using magnetic field displacement, which is a shape of a circular shape, a race track shape, a square shape, a plate shape, and a trumpet shape.
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