JPH0240901A - Device for producing magnetic field using no wire and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a magnetic field generator such as an electromagnet using a material that is difficult to directly form into a wire, and a method for manufacturing the same, and is applicable to an electromagnet using superconducting ceramics or the like. [Prior Art] Most electromagnets currently in use are made by winding a wire with a good conductor around a core made of magnetic material.

On the other hand, recent research and development of new materials has led to the idea of applying materials such as superconducting ceramics to electromagnets.

[Problem to be solved by the invention]

However, since it is difficult to make such superconducting ceramics into thin wires like conventional good conductors, there is a problem in that it is not possible to easily make magnetic field generating devices such as electromagnets by effectively utilizing their properties.

The present invention has been made in view of the problems of the prior art, and includes a magnetic field generator that does not use wires and a method for manufacturing the same, which allows the magnetic field generator to be easily made even from materials that are difficult to make into wires. This is what we are trying to provide.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a magnetic field generating device that does not use a wire, which includes a core base material with continuous grooves formed on its surface, and a core material that is filled in the grooves of the base material in the form of a fluid or a solid. It is characterized by being made of a good conductor that is difficult to make into a wire.

In addition, the method of manufacturing a magnetic field generator without using a wire according to the present invention involves forming a continuous groove on the surface of a base material of a core bad conductor, and placing a good conductor, which is difficult to make into a wire, in a fluid or solid state in the groove. It is characterized in that it is made to solidify after being poured into the container.

[For production]

According to the magnetic field generator of the present invention that does not use wire, a groove corresponding to a conventional coil is formed on the surface of the base material serving as the core, and a good conductor is vapor-deposited, sprayed, or poured into the groove in a molten state. It is used to construct magnetic field generating devices such as electromagnets without having to make wire rods.

Further, according to the manufacturing method of the present invention, grooves are formed on the surface of the base material by sintering or machining, and materials that are difficult to make into wire rods are directly melted and poured into the grooves or are vacuum deposited. Then, the good conductors in these grooves are cooled and solidified to form something equivalent to a coil, making it possible to easily create magnetic field generating devices such as electromagnets.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIGS. 1 and 2 are process explanatory diagrams of an embodiment of the method of manufacturing a magnetic field generating device without using a wire according to the present invention.

A magnetic field generator manufactured by this manufacturing method of a magnetic field generator that does not use wire includes, for example, an electromagnet 1 in which a coil made of a good conductor is wound around the surface of a base material serving as a cylindrical core;
2,3.4, and the magnetic field H passing through the axial direction of the cylinder
form.

In such electromagnets 1, 2.3, first, continuous grooves 5a are formed in advance on the surface of the base material which becomes the core 5, in which the coils are inserted.

The processing method for forming the continuous grooves 5a on the surface of the base material is selected depending on the material used for the core 5, but in cases where it is easy to process in a figurative manner, such as silicon steel, a cylindrical base material is used. After preparation, the grooves 5a may be formed by machining or the like.If machining is difficult, such as with ceramic materials, the grooves 5a may be formed integrally in the process of forming the core 5 by sintering the powdered material. In this case, the mold used in this case may be provided with a protrusion for forming the groove.

In addition, the core 5 is coated with ceramics on the metal surface.
In this case, a continuous groove 5a may be formed in advance in the metal, and the coating may be applied thereon.

The groove 5 is spirally formed between the connecting portions 5b on both end faces, and is connected into a single line as in the case of a coil.

After the core 5 with the grooves 5a formed in this way is made, this core 5
If the base material itself is not an insulating material, the surface of the core 5 should be insulated by applying an insulator or the like so that it can be insulated from the coil.

Next, a coil is formed, but since the good conductor 6 for the coil used in this case is difficult to make into a wire, it is inserted directly into the groove 5a and the connecting portion 5b without being made into a wire.

For example, the core 5 is placed in a vacuum chamber, and the good conductor 6 is deposited only in the groove 5a of the core 5 by heating and vapor-depositing it while rotating the core 5 around the central axis.

In addition, as a method of filling and burying the good conductor 6, it is also possible to spray the good conductor 6 in a gaseous or liquid form.
When performing such vapor deposition, spraying, etc., the groove 5
Pretreatment is performed to prevent the good conductor 6 from adhering to parts other than a.

Furthermore, as a method for embedding the good conductor 6, it is also possible to melt the good conductor 6, pour it into the groove 5a, and solidify it, similar to the casting method.

An example of a material that is a good conductor 6 that is difficult to form into a wire and is superior to conventional materials such as coils is a superconductor.

The electromagnets 1.2, 3.4 formed by burying the good conductor 6, which is difficult to form into a wire, have their surfaces coated with an insulator as required.

When such electromagnets 1.2.3 are actually used, as shown in FIG.
In the illustrated example, three pieces are manufactured, and these are stacked concentrically to form a multi-layered electromagnet 4, and the electromagnet 12 is electrically connected to the good conductor 6 of the connection part 5b embedded in both end faces. .3 is one 'S? I'm trying to get it stone 4.

In the electromagnet 4 manufactured in this way, even if the conductor 5 is a good conductor that is difficult to form into a wire, the core 5 is not directly continuous.
It is possible to use ceramics or the like as the good conductor 6 for the coil, since it can be embedded in the wire and wrapped in the same state as a conventional wire coil.

Therefore, the step of converting the good conductor 6 into a wire can be omitted, and the electromagnets 1, 2, 3.4 can be manufactured easily.

In the above embodiment, a so-called solenoid type electromagnet 1.2.3.4 has a spiral groove 5a formed on the outer surface of a cylindrical core 5 and a good conductor 6 buried in the groove 5a. However, the present invention is not limited to this, and can be applied to magnetic field generating devices such as all types of electromagnets such as so-called racetrack electromagnets.

Further, the method for forming grooves on the surface of the base material that will become the core 5 is not limited to the above method, and any method suitable for the properties of the material may be selected as appropriate.

Furthermore, the method for embedding the good conductor 6 is not limited to the above-mentioned method, and ion blating, sputtering, various plating methods, etc., which are used as thin film manufacturing techniques, can also be used.

〔Effect of the invention〕

As described above in detail with one embodiment, according to the present invention, there is provided a core base material having continuous grooves formed on its surface, and a solid material filled in the grooves of the base material from a fluid state to a solid state. Since a magnetic field generating device that does not use a wire is constructed using a good conductor that is difficult to make into a wire, a magnetic field generating device such as an electromagnet can be easily made even with a good conductor that is difficult to make into a wire.

Therefore, a magnetic field generating device such as an electromagnet using ceramics or the like can be easily constructed.

Furthermore, according to the method of manufacturing a magnetic field generator that does not use a wire according to the present invention, a continuous groove is formed on the surface of the base material that serves as the core, and a good conductor that is difficult to form into a wire is placed in the groove in a fluid or solid state. Since it is allowed to solidify after being inserted into the groove, a good conductor can be filled in by vapor deposition, spraying, or flowing in a molten state into the groove, making it easy to install magnetic field generators such as electromagnets without having to make wire rods. It can be easily made using ceramics.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are process explanatory diagrams each showing an embodiment of the method for manufacturing a magnetic field generating device using no wire according to the present invention. 1.2, 3.4: Electromagnet, 5: Core, 5a: Groove, 5b: Connection part, 6: Good conductor.

Claims (2)

[Claims] (1) It is characterized by being composed of a base material of a poor conductor that serves as a core with continuous grooves formed on its surface, and a good conductor that is difficult to form into a wire and is buried in the grooves of this base material in the form of a fluid or solid. A magnetic field generator that does not use wires. (2) A continuous groove is formed on the surface of the base material of the poor conductor that serves as the core, and a good conductor, which is difficult to make into a wire, is put in a fluid or solid state into the groove and then solidified. A method for manufacturing a magnetic field generator that does not use wire.