Magnetic device using permanent magnets

Provided is a magnetic device using permanent magnets according to an exemplary embodiment of the present invention. In more detail, the present invention relates to a magnetic device using permanent magnets that can form a high magnetic field using a first permanent magnet and a second permanent magnet to perform various kinds of magnetic field application experiments, in particular, can be used for a single crystal growth, generation of polarized neutrons, and the like, and easily manufactured with a simple configuration and secure sufficient durability.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2012-0104305, filed on Sep. 20, 2012, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The following disclosure relates to a magnetic device using permanent magnets, and more particularly, to a magnetic device using permanent magnets capable of forming a high magnetic field.

BACKGROUND

A magnetic device forming a magnetic field has been used for various fields, in particular, has been used for a magnetization for a bulk and a thin film for study on physical properties of a magnetic material, and a protein single crystal growth for a magnetic field.

In this case, in order to supply a high magnetic field of thousands of Gauss or more, an electromagnet using a solenoid coil, a superconducting quantum interference device (SQUID) using a super conductor, and a permanent magnet, and the like, have been used.

A crystal generation device in a high magnetic field for efficiently generating a crystal by a superconducting magnet has been proposed in Japanese Patent Laid-Open Publication No. 2012-076963 (Laid-Open Publication Date Apr. 19, 2012).

However, the superconducting magnet is not suitable for a large single crystal growth. For this reason, in the case of the large single crystal growth, a device for satisfying a temperature condition for a crystal growth may be required and it may be difficult to use and additional device, and the like, that may help the single crystal growth.

Therefore, a need exists for a magnetic device forming a high magnetic field to increase efficiency, with a simple configuration for study on physical properties of various magnetic materials.

SUMMARY

An exemplary embodiment of the present invention is directed to providing a magnetic device using permanent magnets having a high magnetic force using a first permanent magnet having the same polarities in a height direction and a second permanent magnet disposed so that the same polarities of the first permanent magnet and the second permanent magnet face each other, thereby stably forming a magnetic field in a horizontal direction and a vertical direction over a wide area.

Further, an exemplary embodiment of the present invention is directed to providing a magnetic device using permanent magnets capable of performing various kinds of magnetic field application experiments by forming a plurality of space parts in a horizontal direction and a height direction.

In addition, an exemplary embodiment of the present invention is directed to providing a magnetic device using permanent magnets which can be used for a single crystal growth, generation of polarized neutrons, and the like, with high efficiency and easily manufactured with a simple configuration.

Also, an exemplary embodiment of the present invention is directed to providing a magnetic device using permanent magnets capable of forming a high magnetic field on a space part by forming a first support part with materials having good transmission performance of lines of magnetic force, reinforcing durability of a second support part, and keeping a magnetic field at a place at which the space part and the first support part are formed.

Moreover, an exemplary embodiment of the present invention is directed to providing a magnetic device using permanent magnets capable of being easily used by leading a sample storage part in or out from a space part between first support parts, in which the sample storage part has a limited leading-in depth by a side cover and a hollow part is formed on the side cover to be used at the time of drawing out the sample storage part.

In one general aspect, there is provided a magnetic device1000using permanent magnets, including: at least two first permanent magnets100that are spaced apart from each other in a horizontal direction and have the same polarities in a height direction; second permanent magnets200that are disposed at upper and lower portions of the first permanent magnet100so that the same polarities thereof face each other in a height direction; and a fixing member300that fixes the first permanent magnet100and the second permanent magnet200.

The fixing member300may form a space part500between the first permanent magnets100in a horizontal direction.

The second permanent magnets200may be formed to have a size corresponding to each of the first permanent magnets100.

The second permanent magnets200may be formed to have a size corresponding to each of the plurality of first permanent magnets100forming a single column.

The first permanent magnet100may be provided in plural in a vertical direction to form a column.

The second permanent magnets200may be formed to have a size corresponding to the plurality of first permanent magnets100forming a single column.

The second permanent magnets200may be formed to have a size corresponding to all of the plurality of first permanent magnets100.

The first permanent magnet100having the same polarity in a height direction may be provided in plural times in a height direction, and the first permanent magnet100and the second permanent magnet200may be alternately disposed in a height direction.

The fixing member300may include: first support parts310that are spaced apart from each other by a predetermined distance in a horizontal direction and are provided with first seating parts311formed therein, the first seating parts311having the first permanent magnets100; a second support part320that has a plate form supporting upper and lower portions of the plurality of first support parts310and has a second seating part321provided with the second permanent magnet200concavely formed on an outer surface thereof; a upper cover330and a lower cover340that support an upper portion of the top second support part320and a lower portion of the bottom support part; and a fastening member400that fastens the upper cover, the second support part320, the first support part310, and the lower cover.

The first support part310may be made of an Al or glass material.

The second support part320may be made of a Ni alloy or steel material.

A separate sample storage part600may be drawn in and drawn out from the space part500.

The fixing member300may be fastened by the fastening member400and further include a side cover350supporting one of both sides in a vertical direction.

The side cover350may be provided with a hollow part351in which a predetermined region of a location corresponding to the space part500is hollowed.

DETAILED DESCRIPTION OF EMBODIMENTS

Hereinafter, a magnetic device1000using permanent magnets according to an exemplary embodiment of the present invention having the aforementioned features will be described with reference to the accompanying drawings.

The magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention is configured to include a first permanent magnet100, a second permanent magnet200, and a fixing member300.

At least two first permanent magnets100are disposed to be spaced apart from each other in a horizontal direction and each first permanent magnet100is disposed to have the same polarity in a height direction.

That is, at least two first permanent magnets100are formed at the same height to be spaced apart from each other and lower surfaces thereof form the same surface.

In this case, the first permanent magnet100forms an N pole and an S pole in a height direction and all of the plurality of first permanent magnets100has the same polarity direction.

FIG. 2illustrates an example in which the first permanent magnet100is formed in an oval shape and is integrally formed in a vertical direction (column).

The first permanent magnet100may be formed to have a section in any one of a circle, an oval, and a polygon and a size of thereof in horizontal, vertical, and height directions, and the like may be more variously formed in addition to the exampled illustrated in the accompanying drawings.

The second permanent magnets200are disposed at upper and lower portions of the first permanent magnet100so that the same polarities face each other in a height direction.

When the first permanent magnet100forms an N pole and an S pole from the top to the bottom in a height direction, the second permanent magnet200disposed at the upper and lower portions of the first permanent magnet100forms an S pole and an N pole downwardly from the upper portion of the height direction.

The magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention is not illustrated in the drawings, but when polarity directions illustrated inFIGS. 3 and 4may be opposite to each other. In this case, in more detail, when the first permanent magnet100forms an S pole and an N pole from the top to the bottom in a height direction, the second permanent magnet200located at the upper and lower portions of the first permanent magnet100forms an N pole and an S pole from the top to the bottom in a height direction.

The fixing member300is a member for fixing the first permanent magnet100and the second permanent magnet200and a space part500is formed (in a spaced space) between the first permanent magnets100in a horizontal direction.

The space part500is a portion at which the lines of magnetic force are densified and a portion that a member applied with a magnetic field is located.

The description of the fixing member300will be described below.

In this case, the second permanent magnet200may be formed to correspond to the overall size of the plurality of first permanent magnets100forming the column.

FIG. 4is a diagram illustrating the lines of magnetic force applied to the single space part500of the magnetic device1000using permanent magnets and illustrates an example in which the second permanent magnet200is formed at a size corresponding to the first permanent magnet100forming a column and a row.

Referring toFIG. 4, it can be appreciated that the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention concentrates the lines of magnetic force on the space part500to form a high magnetic field.

The magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention illustrated inFIG. 5is similar to the form illustrated inFIGS. 2 and 3and illustrates an example in which the second permanent magnet200is formed at a size corresponding to the first permanent magnet100forming a column.

In addition,FIG. 6is a diagram illustrating a disposition of the first permanent magnet100and the second permanent magnet200applied to the single space part500of the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention illustrated inFIG. 5andFIGS. 7A and 7Bare diagrams illustrating the lines of magnetic force of the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention illustrated inFIG. 5and Comparative Example 1.

In more detail,FIG. 7Ais a diagram illustrating the line of magnetic force depending on the disposition of the first permanent magnet100and the second permanent magnet200of the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention illustrated inFIG. 5andFIG. 7Billustrates the line of magnetic force of Comparative Example 1 in which only the first permanent magnet100is spaced.

In addition,FIG. 8is a diagram illustrating another example of the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, which is similar to the form illustrated inFIGS. 2 and 3but the first permanent magnets100may be disposed in plural in a vertical direction to form a column.

That is, as illustrated inFIG. 8, in the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, the first permanent magnet100may be disposed in plural in a vertical direction so that a space of the space part500may extend in a vertical direction.

Further,FIGS. 9 and 10are diagrams illustrating another example of the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention and illustrates an example in which four first permanent magnets100are disposed in a cylindrical shape in a vertical direction and the second permanent magnets200are each formed in a circular section shape corresponding to the first permanent magnets100.

In the exemplary embodiment of the present invention, a size corresponding to each of the first permanent magnets100means a section (surface including a horizontal direction and a vertical direction) of the first permanent magnet100and the second permanent magnet200has a polarity in a height direction and a size thereof may be formed at a size corresponding to each of the first permanent magnets100.

When the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention has a form and a disposition in which the first permanent magnet100and the second permanent magnet200are disposed so that the same polarities of the first permanent magnet100and the second permanent magnet face each other, the magnetic device1000using permanent magnets has more various shapes in addition to the foregoing example and may be formed in various number in a horizontal direction and a vertical direction.

Further, in the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, in order to increase the formation number of space parts500in which lines of magnetic force are concentrated by the first permanent magnet100and the second permanent magnet200, the first permanent magnet100having the same polarity in a height direction is disposed in plural times in a height direction and the first permanent magnet100and the second permanent magnet200may be alternately disposed in a height direction.

That is, when a single space part500is formed in a height direction, the second permanent magnet200—the first permanent magnet100—the second permanent magnet200are disposed and when two space parts500are formed in a height direction, the second permanent magnet200—the first permanent magnet100—the second permanent magnet100—the first permanent magnet100—the second permanent magnet200are disposed.

FIG. 11illustrates an example in which in the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, a total six of space parts500, that is, three space parts500in a horizontal direction and two space parts500in a height direction are formed.

FIG. 12Ais a diagram illustrating lines of magnetic force applied on the single space part500of the magnetic device1000using permanent magnets illustrated inFIG. 11andFIG. 12Bis a diagram illustrating lines of magnetic force when only the first permanent magnet100ofFIG. 12Ais disposed.

As compared withFIG. 12B, it can be appreciated fromFIG. 12Athat more dense lines of magnetic force are formed on the space part500to form a high magnetic field.

In this case, the first permanent magnet100and the second permanent magnet200that are disposed at the same height may be formed to have various forms.

The fixing member300is a member to stably support the first permanent magnet100and the second permanent magnet200and may be formed to include a first support part310, a second support part320, an upper cover, a lower cover, and a fastening member400.

The first support part310is spaced by a predetermined distance in a horizontal direction and is provided with a first hollow part351having the first permanent magnet100formed therein.

The first support part310may be seated with the first permanent magnet100and may be made of a material that stably forms the space part500and has good transmission performance of lines of magnetic force.

An example of a material forming the first support part310may include Al and glass.

In this case, in the present invention, Al is collectively defined aluminum metal and an alloy including the aluminum metal.

The second support part320supports the upper and lower portions of the first support part310to fix the first permanent magnet100and an outer surface thereof is concavely provided with a second seating part321provided with the second permanent magnet200.

The second support part320may be formed in a plate shape having a size corresponding to the overall size of the at least two first support parts310in consideration of fastening easiness.

In this case, the outer surface of the second support part320means an opposite side to a surface contacting the first permanent magnet100, in both surfaces having a plate form.

The second support part320is provided with the second seating part321to include the second permanent magnet200and may be fixed to the first support part310by the fastening member400.

In addition, the second support part320may be made of a material that may secure a sufficient durability and may be made of a material that may keep a magnetic field at an inner side at which the space part500and the first support part310are formed.

An example of a material forming the second support part320may include a Ni alloy or steel material.

The upper cover330and the lower cover340are each configured to support the upper portion of the top second support part320and the lower portion of the bottom second support part320.

The upper cover330has a plate shape that supports the upper portion of the second support part320and is fastened with the second support part320to fix the second permanent magnet200.

The lower cover340has a plate shape that supports the lower portion of the lower second support part320and is fastened with the second support part320to fix the second permanent magnet200.

In this case, the fastening of the first support part310and the second support part320, the fastening of the upper cover330and the second support part320, and the fastening of the lower cover340and the second support part320may be performed by the fastening member400and the drawing illustrates the form in which the target to be fastened is provided with a screw thread and a bolt is used.

The magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention is not limited thereto and the number and form of fastening members400may be more variously formed.

That is, in the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, the space part500is formed in a horizontal direction by the first support part310and in a height direction by the second support part320.

The space part500is a portion at which the lines of magnetic force are densified and may be inserted with the sample storage part600in which a sample is stored.

FIGS. 2,5, and8illustrate that the sample storage part600is formed in a flat rectangular parallelepiped shape and a plurality of concave parts601are formed.

The sample storage part600is formed of a material transmitting a magnetic field and the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention may be more variously formed, like a form in which a sample that is a target irradiated with a magnetic field is stored.

In this case, the fixing member300may further provided with a side cover350supporting one of both sides in a vertical direction so that an insertion depth of the sample storage part600in a vertical direction may be limited.

Further, the side cover350may be provided with a hollow part351in which a predetermined region of a location corresponding to the space part500is hollowed.

The hollow part351may be used as a portion for drawing out the sample storage part600drawing in the space part500using a separate bar, and the like.

Meanwhile, in the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, the upper cover330—the second support part320—the first support part310—the second support part320—the lower cover340are disposed from the top to the bottom in a height direction and when the plurality of space parts500are formed in a height direction, the second support part320—the first support part310—the second support part320may be provided as many as a frequency corresponding to the formation number of space parts500between the upper cover330and the lower cover340.

Therefore, the magnetic device1000using the permanent magnet of the present invention has the high magnetic force using the first permanent magnet100having the same polarities in the height direction and the second permanent magnet200disposed so that the same polarities of the first permanent magnet100and the second permanent magnet face each other, thereby stably forming the magnetic field in a horizontal direction and a vertical direction over the wide area.

Further, the magnetic device1000using permanent magnets can perform various kinds of magnetic field application experiments, in particular, various experiments including the protein single crystal growth and the generation of polarized neutrons by forming the plurality of space parts500in the horizontal direction and the height direction.

FIGS. 14 and 15illustrate execution photographs of the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention andFIGS. 14 and 15each illustrate the state in three days and in fourteen days after chloride of manganese MnCl2that is a pamamagnetic material affected by a magnetic field is added to a lysozyme protein aqueous solution.

In this case,FIGS. 14 and 15Aare photographs in the case of using the magnetic device1000using permanent magnets illustrated inFIGS. 1 to 3andFIGS. 14B and 15Bare photographs in the case of not using the magnetic device1000using permanent magnets.

Comparing withFIG. 14B, in the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, the crystallization is rapidly progressed inFIG. 14A, such that it can be confirmed that a crystal has a size of 0.5 mm or more.

In the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention, inFIG. 15A, it can be confirmed that the crystal growth is performed in earnest and grown 3 mm or more, but inFIG. 15B, it can be confirmed that the crystals are not largely grown due to the interference and the crystal having a size of about 0.5 to 1 mm are formed, some of the crystals are adhered to each other.

That is, the magnetic device1000using permanent magnets according to the exemplary embodiment of the present invention can form the high magnetic field using the permanent magnets100and200.

Therefore, the magnetic device using the permanent magnet of the present invention has the high magnetic force using the first permanent magnet having the same polarities in the height direction and a second permanent magnet disposed so that the same polarities of the first permanent magnet and the second permanent magnet face each other, thereby stably forming the magnetic field in a horizontal direction and a vertical direction over the wide area.

Further, the magnetic device using the permanent magnets of the present invention can perform various kinds of magnetic field application experiments by forming the plurality of space parts in a horizontal direction and a height direction.

In addition, the magnetic device using the permanent magnets of the present invention can be used for the single crystal growth, the generation of polarized neutrons, and the like, with high efficiency and easily manufactured with the simple configuration.

Also, the magnetic device using the permanent magnets capable of forming the high magnetic field on a space part by forming the first support part with materials having the good transmission performance of lines of magnetic force, reinforcing the durability of the second support part, and keeping a magnetic field at a place at which the space part and the first support part are formed.

The magnetic device using the permanent magnets of the present invention can easily used by leading the sample storage part in or out from the space part between the first support parts, in which the sample storage part has the limited leading-in depth by the side cover and the hollow part is formed on the side cover to be used at the time of drawing out the sample storage part.

The present invention is not limited to the above-mentioned exemplary embodiments, and may be variously applied, and may be variously modified without departing from the gist of the present invention claimed in the claims.