KR101474775B1 - Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same - Google Patents

Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same Download PDF

Info

Publication number
KR101474775B1
KR101474775B1 KR1020140049064A KR20140049064A KR101474775B1 KR 101474775 B1 KR101474775 B1 KR 101474775B1 KR 1020140049064 A KR1020140049064 A KR 1020140049064A KR 20140049064 A KR20140049064 A KR 20140049064A KR 101474775 B1 KR101474775 B1 KR 101474775B1
Authority
KR
South Korea
Prior art keywords
bobbin
ring
winding
bobbin body
conductive wire
Prior art date
Application number
KR1020140049064A
Other languages
Korean (ko)
Inventor
이승제
박광명
김형준
Original Assignee
제이에이취엔지니어링주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 제이에이취엔지니어링주식회사 filed Critical 제이에이취엔지니어링주식회사
Priority to KR1020140049064A priority Critical patent/KR101474775B1/en
Application granted granted Critical
Publication of KR101474775B1 publication Critical patent/KR101474775B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/325—Coil bobbins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/083—External yoke surrounding the coil bobbin, e.g. made of bent magnetic sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Field of the Invention [0001] The present invention relates to a magnetic field generating electromagnet bobbin for growing a silicon single crystal which can efficiently disperse a magnetic force and efficiently generate a magnetic field and can easily and uniformly wind a conductive wire, will be. The magnetic field generating electromagnet bobbin for growing silicon single crystal according to the present invention has a ring-like band shape in which both ends of a rectangular band are connected and a ring-shaped band is bent so that one side of the ring- The bobbin body is formed in a deformed shape so that the length of the conductive wire wound on the outer periphery of the bobbin body is equal to the length of the rectangular bobbin body so as to maintain the same distance to one side of the bobbin body contacting the reference curved surface. And a winding surface formed so that the conductive wire is adhered and wound around the outer periphery. The outer circumferential length of the bobbin according to the present invention is equal to the shortest winding length of the conductive wire wound around the entire winding surface. Therefore, the work of winding the conductive wire is very easy and the winding time can be greatly shortened.

Description

Field of the Invention The present invention relates to a bobbin for an electromagnet and an electromagnet having the bobbin,

The present invention relates to a bobbin, and more particularly, to a bobbin for a magnetic field generating electromagnet for growing a silicon single crystal and an electromagnet having the bobbin.

Electromagnets in which conductive wires are wound on the bobbin are applied to various technical fields requiring a magnetic field. Among the technical fields requiring a magnetic field, a representative example is the single crystal growth field. As a single crystal growth technique, a CZ (Czochralski) method for growing a single crystal ingot from a melt of a single crystal material such as silicon contained in a crucible is widely used.

In the CZ method, natural convection occurs in the single crystal material melt because the single crystal material melt is heated using a heater provided on the side of the crucible. In addition, since the rotation speed of a single crystal or a crucible is adjusted to obtain a defect-free high-quality silicon single crystal due to vacancy or self-interstitial, a single-crystal material melt contains a forced convection . It is known that natural convection and forced convection of a melt of a single crystal material can be controlled by using a magnetic field.

A method of growing a single crystal while applying a horizontal magnetic field to a melt of a single crystal material is known as a MCZ (Magnetic CZ) method. The MCZ method can produce a high quality single crystal of large diameter by applying a magnetic field to a molten single crystal material contained in a crucible to suppress the generation of a large amount of heat in the melt.

1 shows an example of a single crystal growing apparatus by the conventional MCZ method.

The single crystal growth apparatus shown in Fig. 1 has a structure in which a crucible 11 is embedded in a pull-up furnace 10 having an opened upper face. A heater 12 for heating and melting the single crystal material 14 in the crucible 11 is provided around the crucible 11 on the inside of the pulling furnace 10 and a conductive wire is wound on the outside of the pulling furnace 10 And the electromagnet 13 is arranged to face the crucible 11 therebetween.

In manufacturing the single crystal, the single crystal material 14 is placed in the crucible 11 and heated by the heater 12 to melt the single crystal material 14. A seed crystal is lowered and inserted into the single crystal material melt from above the central portion of the crucible 11, and the seed crystal is pulled up at a constant speed by a pulling machine (not shown). At this time, crystals grow in the boundary layer between the solid and the liquid, and the monocrystals 15 grow. When the heat is generated by the heating of the heater 12 during the growth of the monocrystals 15, the molten liquid which is pulled up is disturbed and the production yield of the monocrystal is lowered. Such a problem can be solved by using the electromagnet 13 have.

That is, the molten monocrystalline material 14 is prevented from flowing by the magnetic force line 16 generated by the electromagnet 13 by energization and is not convected in the crucible 11, Thereby forming a solid-phase single crystal body 15.

However, the conventional magnetic field generating electromagnet 13 is of a donut-shaped solenoid type, and the solenoid type electromagnet has a low magnetic field generating efficiency. Therefore, in order to obtain the required magnetic force, it is necessary to increase the size of the solenoid-type electromagnet. In this case, the size of the container in which the electromagnet is embedded is increased.

To solve this problem, a superconducting magnet device having a curved circular or saddle superconducting coil has been disclosed in Registration Utility Model No. 0327810 (Sep. 22, 2003). As shown in Fig. 2 (a), the superconducting coil E disclosed in the above publication is disposed around the cylindrical storage space.

In order to form a curved circular or elliptic superconducting coil E as shown in the figure, the bobbin for supporting the superconducting wire must be a circular or saddle-shaped bobbin, and the superconducting wire must be wound around the outer circumferential surface thereof. When the bobbin has a shape in which the cylinder is cut into a bent shape and the one side thereof is cut out and spread on a flat surface, the outer circumferential surface 30 on which the superconducting wire is wound has a curvature as shown in FIG. 2 (b) It appears as a band.

Therefore, when the wire rod is wound on the bobbin, the wire rod 40 should be bent while bending it in accordance with the bending of the outer peripheral surface 30 of the bobbin. However, since the wire rod 40 wound on the bobbin is always wound at the shortest distance due to the tension thereof, the tension of the wire rod 40 can not be adjusted during winding of the wire rod 40, 30). After winding the wire 40 once in accordance with the bending, the wire 40 is fixed in a wound shape using an adhesive, and then the next turn operation is performed. Therefore, in such a conventional bobbin, it is very difficult to wind the conductive wire thereon and the operation time is long, and it is difficult to automate the winding work.

Disclosure of the Invention The present invention has been devised in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of effectively dispersing magnetic force, efficiently generating a magnetic field, and easily and uniformly winding a conductive wire, And an electromagnet having the bobbin.

In order to accomplish the above object, the present invention provides a magnetic field generating electromagnet bobbin for growing silicon single crystal, comprising a ring-shaped band shape having both ends of a rectangular band connected to each other, The bobbin body being formed in a shape in which the ring-shaped band is bent and deformed so as to be in contact with the bobbin body; And a plurality of bobbin bodies each having a conductive surface on the outer circumference of the bobbin body so that the length of the conductive wire wound around the outer circumference of the bobbin body to be equal to one side of the bobbin body contacting the reference curved surface is equal to the length of the rectangular band, And a winding surface formed so that the wire rod can be closely wound and wound.

According to an aspect of the present invention, there is provided a magnetic field generating electromagnet for growing a silicon single crystal, comprising: a ring-shaped band shape having both ends of a rectangular band connected to each other; A bobbin body having the ring-shaped band formed in a bent shape; The wire rod is brought into close contact with the outer periphery of the bobbin body so that the length of the wire wound around the outer periphery of the bobbin body is the same as the length of the rectangular band so as to be equally spaced from one side of the bobbin body contacting the reference curved surface A winding surface formed so as to be able to be wound; And a conductive wire wound on a winding surface of the bobbin body so as to maintain the same interval with respect to one side of the bobbin body contacting the reference curved surface along the winding surface of the bobbin body.

The magnetic field generating electromagnet for growing silicon single crystal according to the present invention is characterized in that the conductive wire is wound in the shortest distance on the bobbin while the outer circumferential length of the winding surface on which the conductive wire is wound has a constant perimeter geometry And the conductive wire is wound around the entire winding surface of the bobbin with the same winding length very uniformly wound. Accordingly, it is possible to efficiently generate a magnetic field and effectively disperse a magnetic force, and can be applied to a single crystal growth apparatus to inhibit flow of a molten single crystal material in a cylindrical container to a stable and uniform magnetic field, thereby contributing to manufacturing a high quality single crystal.

In addition, the magnetic field generating electromagnets for growing silicon single crystal according to the present invention have the same (+) curvature as the winding surface of the bobbins on which the conductive wires are wound and have the same overall circumferential length, Can be easily carried out, so that the production is easy.

Also, since the magnetic field generating electromagnets for growing silicon single crystal according to the present invention are formed in a ring shape as a whole, they can be installed without increasing the size of the container for accommodating the low temperature container of the single crystal growing apparatus. Therefore, it is possible to reduce the size of the single crystal growth apparatus and reduce the manufacturing cost of the single crystal growth apparatus.

Further, the bobbin for a magnetic field generating electromagnet for growing silicon single crystal according to the present invention has the outer circumferential length of the winding surface over the entire winding surface equal to the shortest winding length of the conductive wire wound thereon. Therefore, when the conductive wire material is wound on the conductive wire material, the conductive wire material does not move on the winding surface even if a tension is applied to the conductive wire material, and there is no need to fix the wire material with an adhesive or the like after winding the wire material once. Since the conductive wire can be wound around the winding surface in the same manner as the general solenoid winding method, the conductive wire can be easily wound, the winding time can be greatly shortened, and the winding work can be easily automated.

The magnetic field generating electromagnet bobbin for growing the silicon single crystal according to the present invention can reduce the partial stress applied to the conductive wire during the winding of the conductive wire while reducing the slip of the conductive wire between the winding turns of the conductive wire. ) Does not occur. Since the bending force applied to the conductive wire is the same throughout the conductive wire, the stress unbalance in the conductive wire does not occur, thereby preventing deterioration of the characteristics of the conductive wire, The durability of the electromagnet can be reduced.

1 shows an example of a single crystal growing apparatus by the conventional MCZ method.
Fig. 2 (a) shows a superconducting coil of a conventional superconducting magnet apparatus, Fig. 2 (b) shows a bobbin for implementing a superconducting coil shown in Fig. 2 Lt; / RTI >
3 is a plan view showing an example of an apparatus to which a magnetic field generating electromagnet for growing silicon single crystal is applied according to an embodiment of the present invention.
4 is a side cross-sectional view showing a magnetic field generating electromagnet for cutting silicon single crystal growth according to an embodiment of the present invention.
5 is a perspective view showing a state in which a magnetic field generating electromagnet bobbin for growing silicon single crystal according to an embodiment of the present invention is disposed on the outer surface of a cylindrical vessel of the apparatus shown in FIG.
FIG. 6 illustrates a bobbin body of a bobbin for generating a magnetic field for growing silicon single crystal according to an embodiment of the present invention, and a flange coupled to one side of the bobbin body are disposed on an outer surface of a cylindrical vessel of the apparatus shown in FIG.
7 illustrates a method of winding a conductive wire on a bobbin for generating a magnetic field for the growth of silicon single crystal according to an embodiment of the present invention.
8 is a plan view showing a bobbin for a magnetic field generating electromagnet for growing silicon single crystal according to an embodiment of the present invention.
9 is a front view showing a bobbin body provided in a bobbin for a magnetic field generating electromagnet for growing silicon single crystal according to an embodiment of the present invention.
10 is a view for explaining that the outer circumferential length of the bobbin body provided in the magnetic field generating electromagnet bobbin for growing silicon single crystal according to the embodiment of the present invention is the same throughout the entire winding surface.
11 (a) is a plan view showing a bobbin body of a bobbin for a magnetic field generating electromagnet for growing silicon single crystal according to an embodiment of the present invention, and FIG. 11 (b) The bobbin body is unfolded on a flat surface.
12 shows a state in which a magnetic field generating electromagnet bobbin for growing a silicon single crystal according to another embodiment of the present invention is disposed on the outer surface of a cylindrical vessel of the apparatus shown in FIG.

Hereinafter, a magnetic field generating electromagnet bobbin for growing silicon single crystal according to the present invention and an electromagnet having the electromagnet will be described in detail with reference to the accompanying drawings.

 FIG. 3 is a plan view showing an example of an apparatus to which a magnetic field generating electromagnet for growing a silicon single crystal according to an embodiment of the present invention is applied. FIG. 4 is a cross-sectional view illustrating a magnetic field generating electromagnet for growing a silicon single crystal according to an embodiment of the present invention. FIG. 5 is a perspective view illustrating a state in which a magnetic field generating electromagnet bobbin for growing a silicon single crystal according to an embodiment of the present invention is disposed on the outer surface of a cylindrical vessel of the apparatus shown in FIG. 3. FIG.

3 to 5, a magnetic field generating electromagnet 100 for growing a silicon single crystal according to an embodiment of the present invention includes a conductive wire 110, a conductive wire 110 wound around the conductive wire 110, And a plurality of layers 115 which are sequentially stacked on the bobbin 120 and are wound on the bobbin 120 in a multi-stage winding manner, the conductive wires 110 being wound on the bobbin 120 in a predetermined winding state, (130). As shown in FIG. 3, the magnetic field generating electromagnet 100 for growing silicon single crystal according to the present embodiment is applied to a single crystal growing apparatus and arranged in a plurality of pairs in a low temperature vessel 50, And forms a horizontal magnetic field therein. In the drawing, four magnetic field generating electromagnets 100 for growing silicon single crystal according to the present embodiment are shown in contact with the outer surface of the cylindrical container 60 so as to form two pairs, but the magnetic field generating electromagnets 100 may be installed on the outside of the cylindrical container 60 so as to form two or more pairs in contact or noncontact manner.

3 and 4, the conductive wire rod 110 is supported on the bobbin 120 so as to be wound on the outer circumferential surface of the bobbin 120 to maintain a constant shape, thereby forming a magnetic field generating electromagnet 100 for growing silicon single crystal do. The conductive wires 110 are wound in multiple stages on the bobbin 120 so that a plurality of layers 115 of the conductive wires 110 are formed on the bobbin 120 in multiple layers. The conductive wire 110 may be made of various conductive materials through which an electric current can flow. When a superconducting wire is used as the conductive wire 110, a superconducting electromagnet can be formed.

An insulating plate 130 is interposed between the plurality of layers 115 stacked on the bobbin 120 at a plurality of stages. Insulation plate 130 insulates upper and lower neighboring layers 115. The insulating plate 130 is made of a non-metallic prepreg. The prepreg in the form of a sheet in which such a matrix is preliminarily impregnated in a reinforced fiber is thin but strong and thinly interposed between the layers 115 made of the conductive wires 110 to form the layers 115, And it is not deformed or broken even in a cryogenic environment. Of course, the insulating plate 130 may be made of various other materials having insulating properties in addition to the prepregs. In the existing Duksung patent (or in the prior art), the use of the prepreg was very inconvenient and practically impossible. However, in this winding method in which the winding surface always comes out in a rectangular shape, it is easy to use the prepreg.

As shown in FIGS. 3 to 6, the bobbin 120 for generating a magnetic field for growing silicon single crystal according to the present embodiment includes a plurality of conductive wires 110, such as superconducting wires, (110) is formed into a substantially round ring shape having a curvature of at least a predetermined size. The bobbin 120 includes a bobbin body 121 to which the conductive wire 110 is wound and a pair of flanges 125 and 126 provided at both ends of the bobbin body 121. The flange portions 125 and 126 are provided at the ends of the bobbin body 121 so as to protrude from the winding surface 122 of the bobbin body 121 so that the conductive wires 110 wound on the bobbin body 121 are inserted into the bobbin body 121 ).

The bobbin 120 may be made of various materials having rigidity to support the conductive wire 110 wound at a constant pressure so as to maintain a constant wound shape. For example, the bobbin 120 may be made of glass fiber-reinforced plastic, and the bobbin 120 made of glass fiber reinforced plastic is not easily deformed without affecting the magnetic field generated in the conductive wire 110, It is possible to stably support the wire rod 110 so as to maintain the wound shape. Also, the glass fiber reinforced plastic can maintain its shape without being deformed or broken at an extremely low temperature, and the bobbin made of glass fiber reinforced plastic is advantageous for realizing a superconducting magnet by winding the superconducting wire thereon. Of course, the bobbin 120 according to the present invention may be made of various other materials other than the glass fiber reinforced plastic and not being easily deformed in a low-temperature environment without affecting the magnetic field generated in the conductive wire 110,

6 to 9, the bobbin body 121 has a ring-shaped band shape in which both ends of a rectangular band are connected to each other. The ring-shaped band is shaped like a ring so that one side of the ring- The band is formed in a bending deformed shape. The length of the wire wound on the outer periphery of the bobbin body 121 is equal to the length of the rectangular band so as to be equally spaced from one side of the bobbin body 121 contacting the reference curved surface 75 A ring-shaped ring-shaped inner side end portion 123 located at one side edge of the winding surface 122, and a ring-shaped ring-shaped inner side edge portion 123 located at one side edge of the winding surface 122, Shaped outer side end portion 124 provided at the other side edge of the ring-shaped outer side end portion 122. [ The bobbin body 121 has a structure in which the conductive wire 110 is wound in the shortest distance and the outer circumferential length of the winding surface 122 on which the conductive wire 110 is wound has a constant perimeter geometry of a curved ring.

That is, the ring-shaped inward end 123 of the bobbin body 121 has a radius of curvature r of the imaginary cylinder 70 so as to correspond to the curvature of the imaginary reference curved surface 75 located on the outer circumferential surface of the imaginary cylinder 70, Like outer end portion 124 is formed in a curved shape in the same direction as the bending direction of the ring-shaped inside end portion 123 by being spaced apart from the ring-shaped inward end portion 123 in the radial direction of the imaginary cylinder 70 .

9, when the front view of the bobbin body 121 disposed on the outer circumferential surface of the imaginary cylinder 70 is shown on a plane, the ring-shaped inner end 123 appears as an elliptical shape, and the ring- Shaped inner side end portion 123 and an elliptical shape disposed in a direction perpendicular to the ring- That is, the major axis a1 of the ring-shaped inside end 123 is arranged in a direction parallel to the center axis C (see Fig. 8) of the imaginary cylindrical column 70 and the minor axis b1 of the ring- (C) of the columnar cylinder (70). The major axis a2 of the annular outer end 124 is arranged perpendicular to the central axis C of the imaginary cylindrical 70 and the minor axis b2 of the annular outer end 124 is located in the imaginary circular cylinder 70, And is disposed in a direction parallel to the center axis C of the first guide plate. The length of the long axis a2 of the ring-shaped outer end portion 124 is equal to or extremely similar to the length of the long axis a1 of the ring-shaped inward end portion 123 and the length of the short axis b2 of the ring- The length of the short axis b1 of the second end 123 is the same or extremely similar to the length of the short axis b1.

The width of the winding surface 122 between the ring-shaped inside end portion 123 and the ring-shaped outside end portion 124 is entirely constant along the circumferential direction and the conductive wire member 110 is uniformly wound on the winding surface 122. The conductive wire rod 110 is wound on one side of the winding surface 122 and wound on one side of the bobbin body 121 which contacts the reference curved surface 75 along the winding surface 122 to be equally spaced, (See FIG. 4). On one side of the layer 115 on the layer 115, one side of the bobbin body 121 contacting the reference curved surface 75 is wound to be equally spaced to form another layer 115. The layer 115 on which the conductive wire 110 is wound and stacked on the winding surface 122 may be provided in various numbers.

When the conductive wire rod 110 is wrapped around the winding surface 122 of the bobbin body 121, the length of one winding of the conductive wire 110 is the same throughout the winding surface 122. That is, the bobbin body 121 is wound in the shortest distance so that the conductive wire 110 is spaced equally from one side of the bobbin body 121 contacting the reference curved surface 75 along the winding surface 122 The outer circumferential length of the winding surface 122 on which the conductive wire rod 110 is wound and has the same structure throughout the winding surface 122 regardless of the distance from the ring-shaped inside end 123 or the ring- perimeter geometry, so that the winding length of the conductive wire 110 wound once is also the same with the shortest distance all over the winding surface 122. [

More specifically, as shown in Fig. 10, the outer peripheral length of the ring-shaped inner side end portion 123, which is separated from the central axis C of the virtual cylindrical column 70 of the winding surface 122 by the radius of curvature r, The outer circumferential length of a portion distanced by d1 from the ring-shaped inner end 123 of the surface 122, the outer circumferential length of a portion distanced by d2 from the ring-shaped inner end 123 of the winding surface 122, The outer circumferential length of the portion distanced by d3 from the inner end portion 123, the outer circumferential length of the portion distanced by d4 from the ring-shaped inner end portion 123 of the winding surface 122, The outer circumferential lengths of the portions apart by d5 are all the same. Therefore, the conductive wire 110 is wrapped around the entire winding surface 122 of the bobbin body 121 with the same winding length to form the first layer 115 (see FIG. 4). The outer circumferential length of the first layer 115 of the conductive wire 110 that is formed in contact with the winding surface 122 is constant regardless of the distance from the flange portions 125 and 126, The same is true throughout the face 122 and the conductive wire 110 wrapped thereon is wound with the same wrapping length throughout the layer 115 over that layer 115.

11 (a), the bobbin body 121 according to the present invention has a ring-shaped band shape in which both ends of the rectangular band are connected, and one side of the ring- Shaped band is bent and deformed so as to uniformly contact the conductive wire member 75, so that the conductive wire member 110 can be wound in the shortest distance. That is, as shown in FIG. 11 (b), when the bobbin body 121 is cut out at one side thereof and spread out on a flat surface, when the winding surface 122 to which the conductive wire 110 is wound forms a straight band . The outer peripheral length of the winding surface 122 is wound around the entire periphery of the bobbin body 121 so as to be equally spaced with respect to one side of the bobbin body 121 contacting the reference curved surface 75 over the entire winding surface 122 Is equal to the shortest winding length of the conductive wire 110. Therefore, when the conductive wire rod 110 is wound using a wire winding machine or the like, the conductive wire rod 110 does not move on the winding surface 122 even when a tensile force is applied to the conductive wire rod 110, It is not necessary to fix the wire rod with an adhesive after winding.

As described above, the bobbin 120 according to the present invention can wind the conductive wire 110 around the outer circumferential surface thereof in the same manner as a general solenoid winding method, so that the winding work of the conductive wire 110 is very easy, And it is easy to automate winding work.

After the layer 115 is formed on the winding surface 122 of the bobbin 120, a strip-shaped insulating plate 130 is easily wound on the layer 115 so as to cover the entire layer 115, 115 may be insulated, and then another conductive layer 115 may be formed by winding the conductive wire 110 thereon.

As described above, the electromagnet 100 according to the present embodiment is configured such that the bobbin body 121 of the bobbin 120 is wound on the winding surface 110 in which the conductive wire 110 is wound with the shortest distance, The outer circumferential length of the conductive wire member 122 is in the form of a curved ring having the same structure (constant perimeter geometry) throughout the entire winding surface 122 and the conductive wire member 110 has the same And is formed by winding it very uniformly with one winding length. Therefore, the horizontal magnetic field can be efficiently generated and the magnetic force can be effectively dispersed.

The electromagnet 100 according to the present embodiment has a winding surface 122 of the bobbin 120 around which the conductive wire 110 is wound has a positive curvature larger than a certain size and has the same overall circumferential length, The conductive wire member 110 can be easily wound up, which is easy to manufacture. If the width or the outer circumferential length of the outer side surface on which the conductive wire material is wound is not constant along the circumferential direction or the outer circumferential length of the outer surface on which the conductive wire material is wound is not equal to the shortest winding length of the conductive wire material wound thereon, It is very difficult to wind the wire and it is difficult to automate the winding work because the winding direction and interval of the conductive wire must be continuously changed in accordance with the winding position in the electromagnet bobbin. On the other hand, the bobbin 120 for generating a magnetic field for growing silicon single crystal according to the present embodiment can wind the conductive wire 110 on the winding surface 122 at the shortest distance and in the same winding direction at a constant distance, It is easy to wind the conductive wire 110 manually and it is easy to automate the winding work.

The magnetic field generating electromagnet bobbin 120 for growing the silicon single crystal according to the present embodiment can wind the conductive wire 110 at a constant distance on the winding surface 122 at the shortest distance, A slip of the conductive wire 110 does not occur between the winding turns of the conductive wire 110 while reducing the applied partial stress. Since the bending force applied to the conductive wire 110 is the same throughout the conductive wire 110, stress unbalance does not occur in the conductive wire 110, thereby deteriorating the characteristics of the conductive wire 110 And it is possible to realize an electromagnet having a high durability because there is little risk that the conductive wire rod 110 is wound while being wound up during use.

In addition, since the electromagnet 100 according to the present embodiment is formed in a bent shape as a whole, the size of the cryogenic vessel 50 for accommodating the electromagnet 100 when applied to a single crystal growth apparatus can be reduced. Therefore, it is possible to reduce the size of the device to which it is applied and reduce the manufacturing cost of the device.

12 shows a state in which a magnetic field generating electromagnet bobbin for growing a silicon single crystal according to another embodiment of the present invention is disposed on the outer surface of a cylindrical vessel of the apparatus shown in FIG.

A magnetic field generating electromagnet for growing silicon single crystal according to another embodiment of the present invention includes a bobbin 140 and a conductive wire 110 wound on the bobbin 140 to form a plurality of layers 115 And the insulating sheet member 130 (see FIG. 4) sandwiched between the plurality of layers 115 by the conductive wire member 110. The conductive wire member 110 and the insulating sheet member 130 are made of the above- The same.

12, the bobbin 140 according to another embodiment of the present invention includes a bobbin body 141 to which the conductive wire 110 is wound, a pair of bobbin bodies 141 provided at both ends of the bobbin body 141, The bobbin body 141 includes the ring-shaped winding portions 142, 143, and 144 as compared with the bobbin 120 for the magnetic field generating electromagnet described above including the flange portions 125 and 126 .

The plurality of ring-shaped winding sections 142, 143 and 144 are ring-shaped strips connected at both ends of the rectangular band, and the ring-shaped band is bent and deformed so that one side of the ring- 143, and 144 are coupled to each other so that one side of each of the ring-shaped winding sections 142, 143, and 144 is in close contact with each other, thereby forming one bobbin body 141. That is, one ring-shaped winding section 142 is in contact with one facing side of one ring-shaped winding section 143 adjacent to the other ring-shaped winding section 143 and is engaged with another ring-shaped winding section 143, Shaped winding portion 144 is connected to another ring-shaped winding portion 144. The other ring-shaped winding portion 144 has a ring-shaped band shape in which both ends of the rectangular band are connected to each other And forms a bobbin body 141 having a ring-shaped band bent and deformed so that one side of the ring-shaped band uniformly contacts an imaginary reference curved surface.

The bobbin body 141 is provided with a winding surface 122 formed so as to be wound on the outer periphery of the bobbin body 141 so as to be closely wound thereon and a ring shaped inner end 123 located at one side edge of the winding surface 122, And a ring-shaped outer side end portion 124 provided on the other side edge of the winding surface 122 are provided. The bobbin body 141 is wound on the winding surface of the bobbin 120 for winding the conductive wire 110 while the conductive wire 110 is wound in the shortest distance as in the case of the bobbin body 121 of the magnetic field generating electromagnet bobbin 120, 122 has a curved ring shape having the same structure (constant perimeter geometry) throughout the entire winding surface 122.

The bobbin 140 according to another embodiment of the present invention is formed by combining a plurality of ring-shaped winding portions 142, 143 and 144 to form one bobbin body 141 and flanges 125 and 126, The outer circumferential length of the winding surface 122 on which the conductive wire rod 110 is wound is the same as the outer circumferential length of the conductive wire rod 110 on the entire winding surface 122 A constant perimeter geometry can be implemented. The coupling between the bobbin body 141 and the flange portions 125 and 126 or the bonding between the bobbin body 141 and the flange portions 125 and 126 is performed by a bonding method using a bonding agent, Can be achieved through a coupling method.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited to the embodiments described above.

For example, the electromagnet according to the present invention may be used as a superconducting magnet applied to a single crystal growth apparatus as shown to form a horizontal magnetic field in the cylindrical vessel 60, or may be applied to various technical fields requiring a magnetic field have.

Although the flange portions 125 and 126 of the bobbin 120 are shown as being provided on both ends of the bobbin body 121 in the drawing, the conductive wire 110 wrapped around the bobbin body 121 may be inserted into the bobbin body 121, The flange portion that prevents the bobbin body 121 from coming off may be provided only at one end or the other end of the bobbin body 121 so as to protrude from the winding surface 122 of the bobbin body 121. The flange portion may have various other shapes protruding from the winding surface 122 of the bobbin body 121 so that the conductive wire rod 110 wound on the bobbin body 121 may be caught.

In the figure, when the front view of the bobbin body 121 of the bobbin 120 disposed on the outside of the imaginary cylinder 70 is shown on a plane, the long axis of the ring-shaped inner end 123 of the bobbin 120 a1 is arranged in a direction parallel to the center axis C of the virtual columnar cylinder 70 and the long axis a2 of the ring shaped outer end portion 124 is perpendicular to the center axis C of the virtual columnar cylinder 70 However, the present invention is not limited to such a configuration. That is, when the shape of the bobbin of the electromagnet according to the present invention is shown on a plane on the bobbin body, the long axis of the curved ring-shaped inner end corresponds to the curvature of the imaginary cylindrical outer surface, And the major axis of the ring-shaped outer end portion is arranged in the horizontal direction with respect to the central axis of the imaginary cylindrical column. Even in this case, the bobbin has a shape in which the conductive wire is wound in the shortest distance, and the outer circumferential length of the winding surface wound around the conductive wire between the ring-shaped inside end and the ring- The conductive wire member 110 is wound uniformly with the same one winding length over the entire winding surface of the bobbin because it takes the shape of a curved ring of the same structure (constant perimeter geometry) throughout the winding surface.

The bobbin body 121 of the bobbin 120 has a radius of curvature r uniformly contacting an imaginary reference curved surface 75 located on the outer circumferential surface of the imaginary cylindrical cylinder 70 The bobbin according to the present invention is not limited to such a shape. That is, in the bobbin according to the present invention, the bobbin body is formed in a ring shape in which the rectangular band is bent in a ring shape so that both ends thereof are connected to each other, and one end thereof is uniformly contacted with a virtual reference curved surface, The imaginary reference curved surface may be a shape located on the outer peripheral surface of the distorted cylinder in addition to the curved shape so as to have a constant radius of curvature such that the imaginary reference curved surface is located on the outer peripheral surface of the cylinder.

12 shows that the bobbin body 141 is composed of three ring-shaped winding sections 142, 143 and 144, the number of ring-shaped winding sections constituting the bobbin body is changed to two or more different numbers .

50: low temperature vessel 60: cylindrical vessel
70: imaginary cylinder 100: magnetic field generation electromagnet
110: conductive wires 120, 140: bobbin
121, 141: bobbin body 122: winding surface
123: ring-shaped inner end 124: ring-shaped outer end
125, 126: flange portion 130: insulating plate material
142, 143, 144: Ring-

Claims (9)

Magnetic field generation for silicon single crystal growth In a bobbin for an electromagnet,
A bobbin body in which the ring-shaped band is formed in a bent shape so that one side of the ring-shaped band uniformly contacts an imaginary reference curved surface; And
The conductive wire is wound around the bobbin body so that the length of the conductive wire wound around the outer periphery of the bobbin body is equal to the length of the rectangular band so as to maintain the same distance from one side of the bobbin body contacting the reference curved surface, And a winding surface formed so as to be in close contact with and wound on the bobbin. The method according to claim 1,
Wherein the imaginary reference curved surface is located on a virtual cylindrical outer circumferential surface having a constant radius of curvature (r). The method according to claim 1,
Wherein the bobbin body has a plurality of ring-shaped winding portions, each of which is formed in a curved ring-shaped band shape having both ends of a rectangular band connected to each other so as to mutually abut one side edge. A bobbin body in which the ring-shaped band is formed in a bent shape so that one side of the ring-shaped band uniformly contacts an imaginary reference curved surface;
The wire rod is brought into close contact with the outer periphery of the bobbin body so that the length of the wire wound around the outer periphery of the bobbin body is the same as the length of the rectangular band so as to be equally spaced from one side of the bobbin body contacting the reference curved surface A winding surface formed so as to be able to be wound; And
And a conductive wire wound on a winding surface of the bobbin body so as to maintain the same distance from one side of the bobbin body contacting the reference curved surface along a winding surface of the bobbin body. Magnetic field generating electromagnet. 5. The method of claim 4,
Wherein the imaginary reference curved surface is located on a virtual cylindrical outer circumferential surface having a constant radius of curvature (r). 5. The method of claim 4,
And a rectangular strip-shaped insulation plate interposed between a plurality of layers on the winding surface in which the conductive wires are wound in multiple stages and stacked in turn on the winding surface. Electromagnetism. The method according to claim 6,
Wherein the insulating plate material is made of a rectangular prepreg. 6. The method of claim 5,
Wherein the conductive wire is made of a superconductor. 5. The method of claim 4,
Wherein the bobbin body has a plurality of ring-shaped winding portions formed in a curved ring-like band shape in which both ends of a rectangular band are connected to each other so that one side of each of the ring-shaped winding portions mutually abuts.
KR1020140049064A 2014-04-24 2014-04-24 Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same KR101474775B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140049064A KR101474775B1 (en) 2014-04-24 2014-04-24 Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140049064A KR101474775B1 (en) 2014-04-24 2014-04-24 Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same

Publications (1)

Publication Number Publication Date
KR101474775B1 true KR101474775B1 (en) 2014-12-22

Family

ID=52679460

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140049064A KR101474775B1 (en) 2014-04-24 2014-04-24 Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same

Country Status (1)

Country Link
KR (1) KR101474775B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102273671B1 (en) 2020-06-19 2021-07-07 제이에이취엔지니어링주식회사 Manufacturing method of the Bobbin of Electromagnet for Producing Magnetic Field for Growing Semiconductor Single Crystal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06163241A (en) * 1992-11-17 1994-06-10 Mitsubishi Heavy Ind Ltd Electromagnet for magnetic field generating device
JPH06176924A (en) * 1992-12-09 1994-06-24 Sumitomo Electric Ind Ltd Superconducting magnet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06163241A (en) * 1992-11-17 1994-06-10 Mitsubishi Heavy Ind Ltd Electromagnet for magnetic field generating device
JPH06176924A (en) * 1992-12-09 1994-06-24 Sumitomo Electric Ind Ltd Superconducting magnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102273671B1 (en) 2020-06-19 2021-07-07 제이에이취엔지니어링주식회사 Manufacturing method of the Bobbin of Electromagnet for Producing Magnetic Field for Growing Semiconductor Single Crystal

Similar Documents

Publication Publication Date Title
US6535092B1 (en) Device for generating a variable magnetic field
WO2009139447A1 (en) Single crystal manufacturing device and manufacturing method
CN104822319A (en) Gradient magnetic field coil device and magnetic resonance imaging device
US9127377B2 (en) Generating a homogeneous magnetic field while pulling a single crystal from molten semiconductor material
KR101474775B1 (en) Bobbin of Electromagnet for Producing Magnetic Field for Growing Silicon Single Crystal and Electromagnet Having the Same
US8917153B2 (en) Supported pot magnet for magnetic resonance system
US20210123155A1 (en) Magnet coil for magnetic czochralski single crystal growth and magnetic czochralski single crystal growth method
CN107604439A (en) A kind of thermal field structure of growing large-size single-crystal silicon carbide
US4109128A (en) Method for the production of semiconductor rods of large diameter and device for making the same
US10319821B2 (en) Silicon carbide substrate
WO2014017648A1 (en) Crucible, device for crystal growth, and method for crystal growth
JPH09169591A (en) Apparatus for growth of single crystal
JPS62256787A (en) Method and device for growing single crystal
KR102273671B1 (en) Manufacturing method of the Bobbin of Electromagnet for Producing Magnetic Field for Growing Semiconductor Single Crystal
JP5392040B2 (en) Single crystal manufacturing apparatus and single crystal manufacturing method
KR20170088120A (en) Single crystal ingot growth apparatus and the growing method of it
JP5936191B2 (en) Crystal production method
JP7230781B2 (en) Single crystal pulling apparatus and single crystal pulling method
CN103628040A (en) MOCVD apparatus and MOCVD heating method
JP2004517797A (en) Magnetic field heating furnace for manufacturing semiconductor substrate and method of using the same
JP2011213503A (en) Heater, crystal growing device and method for producing compound semiconductor single crystal
CN103160920A (en) Heating body structure of single crystal growth furnace
CN219731131U (en) Graphite heater and crystal growth equipment
CN112210819A (en) Preparation method and equipment of crystal bar
CN203247337U (en) Heating body structure of single crystal growth furnace

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20171201

Year of fee payment: 4