JPS63305748A - Superconductor motor - Google Patents

Abstract

PURPOSE:To eliminate a noise, by providing a permanent magnet in either a stator or a rotor and an annular structure, which is wound by a superconducting coil to be mounted in the other and providing the rotor with a bearing function. CONSTITUTION:A superconductor motor mounts a thin disk-shaped permanent magnet 3', having an outside diameter larger then that of a disk-shaped permanent magnet 3, to its one surface and arranging a shaft 11, penetrating through the permanent magnet 3, to its center. The motor mounts a permanent magnet 1 by a screw 7 to an opposite side surface of both the magnet 3, 3', forming a rotor 30. The motor forms a superconducting film 13 on the outer periphery of the permanent magnet 3 of the rotor 30 providing a predetermined space respectively from the permanent magnets 1-3, while arranging a number of superconducting plates 14 with a predetermined space in the inside thereof. The motor arranges stators 31 consisting of an annular permanent magnet 12 having one superconducting coil 4. Accordingly, the motor, in which the rotor 30 rotates in a condition with no mechanical contact by a bearing or a brush or the like, enables the rotor to semipermanently continue its rotary motion.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention utilizes the Meissner effect of superconductors to perform the bearing action of the rotating body of the drive unit in a non-contact state. This invention relates to a motor that can continue its motion permanently.

[Conventional technology]

Conventional single-pole motors operate by passing direct current through brushes through a rotor conductor placed in a magnetic field, as described in ``Basics and Applications of Precision Small Motors'' (by Hiroshi Yamada, published by Kogaku Tosho). This utilizes the torque generated by this. Also, according to the same literature, brushless motors obtain torque through the interaction between permanent magnets as the rotor and current flowing through the armature conductors as the stator, and the DC power supplied to the armature is It is configured to be controlled by a circuit.

(Problems to be Solved by the Invention) In the conventional single-pole motor described above, the rotor conductor is energized through the brushes, so the rotating body rotates while being in mechanical contact, resulting in energy loss! A loss occurs. Further, during driving, electric power must be constantly supplied to the rotor conductor, a bearing for the rotor is required separately, and the structure becomes complicated.

In addition, with conventional brushless motors, it is necessary to control the DC power flowing to the armature with an attached electronic circuit in order to alternatingly change the polarity of the magnetic poles, which makes the electrical circuit complicated. It has the following disadvantages.

In the present invention, there is no mechanical contact between the stator and the rotor, so the structure is simplified because no rotor bearing is required, and once energy is supplied, the rotor remains semi-permanent. An object of the present invention is to provide a superconductor motor that can be continuously driven.

(Means for Solving the Problems) A superconducting motor of the present invention has a permanent magnet on one of a stator and a rotating body, and has an annular body around which a superconducting coil is wound on the other, and the rotating body The superconducting coil has a bearing function and rotates without mechanical contact, and the superconducting coil is placed in a magnetic field so that a tangential force is applied to the circumference due to Lorentz force. The rotational movement continues semi-permanently.

[Effect]

In this way, the superconducting coil is placed in a magnetic field so that a tangential force acts on the circumference due to the Lorentz force, so once energy is supplied and started, the machine can be activated without any subsequent energy supply. By rotating the rotor in a non-contact state and performing a bearing action by utilizing the Meissner effect that occurs between the rotating body and the stator,
Driven completely without contact.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of essential parts of an embodiment of the superconductor motor of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG.
) is a partially cutaway perspective view of the superconducting coil wrapping body, and Figure 3 (b
) and (C) are BB and C- in Figure 3(a), respectively.
C sectional views and FIG. 4 are DD sectional views of FIG. 3(a).

A thin disk-shaped permanent magnet 3° having an outer diameter larger than the permanent magnet 3 is attached to one surface of the disk-shaped permanent magnet 3, and a shaft 11 passing through the permanent magnet 3 is attached to the center of the permanent magnet 3. It is being Two threaded holes 5 are provided on the surface of the permanent magnet 3 opposite to the permanent magnet 3°, and a permanent magnet 1 having mounting holes 6 at two locations corresponding to the threaded holes 5 is mounted with screws 7. Thus, a rotating body 30 is formed. On the other hand, the second
As shown in the figure, permanent magnets 1 and 2 are placed outside the permanent magnet 3 of the rotating body 30. A superconducting film 13 is formed on the outside with a predetermined gap between each of the permanent magnets 3, and a plurality of superconducting plates 14 are arranged on the inside at intervals. An annular permanent magnet 1 having one superconducting coil 4 attached thereto
A stator 31 consisting of two is arranged. However, 7 days later,
The superconductor motor is composed only of the rotating body 30 and the stator 31, and does not include contact parts such as bearings and brushes.

Now, when current is supplied to the superconducting coil 4 of the stator 31, a magnetic field is generated by the permanent magnet 12, but as shown in FIG. 3, this magnetic field is prevented from leaking outward by the superconducting film 13 and the superconducting plate 41. be done.

On the other hand, lines of magnetic force 16 as shown in FIG. 4 are generated from the permanent magnet 12 of the stator 31 toward the permanent magnet 3 of the rotating body 30,
Rotating body 30 is rotated in the direction of arrow P. During this time, a radial force is generated between the superconducting plate 14 disposed inside the stator 31 and the permanent magnet 3 of the rotor 30 due to the Meissner effect, causing the rotor 30 to move between the stator 3 in a non-contact state.
It functions as a bearing that supports the inside of 1. Therefore, the rotor 3 is not in mechanical contact with bearings, brushes, etc.
Since the superconductor motor rotates inside the stator 31, the superconductor motor continues to rotate semi-permanently even if current is supplied only once. Additionally, since there are no bearings, lubricating oil is not required and it can be used in a vacuum.

FIG. 5 is an exploded perspective view of the main parts of another embodiment of the superconductor motor of the present invention, FIG. 6 is a sectional view taken along line E-E in FIG. 5, and FIG.
a) and (b) are respectively a sectional view taken along line FF in FIG. 6 and a diagram showing lines of magnetic force.

In this embodiment, a cold panel 50 made of a Cu material in contact with a superconductor 2 has a screw hole 5, and a superconductor disk 25 in contact with this is attached, and the screw hole 5 has a diameter larger than that of the superconductor plate 2. The superconducting plate l is connected to the screw 7 through the mounting hole 6.
It is installed by The superconducting plate 1 is provided with two other mounting holes 8 on a concentric circle larger than the mounting holes 6, and an annular non-magnetic stator 20 around which a superconducting coil 19 is wound is attached to two screws. 9 is attached to the screw hole 18. A shaft 11 is fixed to the center of a rotating body 21 made of a magnetic material. On the other hand, a nonmagnetic stator 20 around which a superconducting plate 1.2 and a superconducting coil 19 are wound
are integrated to form a stator 32. On the other hand, annular permanent magnets 21 and 22 for generating a magnetic field outside and inside the non-magnetic stator 20 are provided with a gap from the non-magnetic stator 20, respectively, and the permanent magnets 21 and 22 are connected to the non-magnetic link. The rotating body 3 is connected by 23 and becomes one body.
3 is formed.

In order to confine the magnetic field generated by the superconducting coil 19, the superconducting coil 19 between the non-magnetic stator 20 and the annular permanent magnet 22 is coated with a superconductor coating film 24.

In the rotor 33 and stator 32 configured in this way, when current is supplied to the superconducting coil 19, the stator 32 will move between the superconducting disk 25 and the permanent magnet 22 of the rotor 33.
The superconducting plate 1.2 and the permanent magnets 21, 22 rotate in a non-contact state due to the bearing action in the radial direction due to the Meissner effect and the bearing action in the thrust direction due to the Meissner effect occurring between the superconducting plate 1.2 and the permanent magnets 21.22. In this case, the magnetic rotors 21 and 22 move in the direction of arrow P due to the lines of magnetic force 16 shown in FIG. 7(b).

rotational movement in the direction.

In addition, in order to enable motor operation at temperatures below Tc,
To cool the superconducting material, Cu with high thermal conductivity was used as the cold panel 50 and the LN2 introduction path. In order to further enhance the cooling effect, the entire device was placed inside a vacuum container.

〔Effect of the invention〕

As explained above, the superconducting motor of the present invention has a permanent magnet on one of the stator and the rotating body, and has an annular body around which a superconducting coil is wound on the other, and the rotating body functions as a bearing. This simplifies the structure and eliminates the need for lubricating oil; the stator and rotating body rotate without mechanical contact, which eliminates noise; and there is no heat generation due to Joule heat, which facilitates cooling. What is unnecessary is that since a superconducting coil is used, Lorentz force acts on it, and once energy is supplied to drive it, rotational motion continues semi-permanently without energy supply, making long-term continuous motion possible.
There are effects such as

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of essential parts of an embodiment of the superconducting motor of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3(a)
Figure 3(b) is a partially cutaway perspective view of the superconducting coil-wound body.
, (C) are B-B and C-C in Figure 3 (a), respectively.
4 is a sectional view taken along the line DD in FIG. 3(a), FIG. 5 is an exploded perspective view of a main part of another embodiment of the present invention, and FIG. The sectional views, FIGS. 7(a) and 7(b), are a sectional view taken along line FF in FIG. 6 and a diagram showing lines of magnetic force, respectively. 1.2-...superconducting plate, 3,3°...permanent magnet,
4-・Superconducting coil, 5・-hole, 6.8-・
・Mounting hole, 7.9・-hole, 11-・shaft, 12-・permanent magnet, 13-・superconducting film,
14-...superconducting plate, tq-・magnetic field lines,
18--hole, 19--superconducting coil,
20--Nonmagnetic stator, 21, 22--Permanent magnet,
23.-Nonmagnetic material, 24-.Superconductor coating, 2
5-・Superconductor disk. 30, 32-Stator, 31.33-Rotating body. 50-Cold panel, 5l-LN2 inlet.

Claims (1)

[Claims] 1. A permanent magnet is provided on either the stator or the rotating body,
1. A superconductor motor comprising an annular body around which a superconducting coil is wound on the other side, and wherein the rotating body has a bearing function. 2. Equipped with a permanent magnet on either the stator or the rotating body,
A superconductor motor comprising an annular body around which a superconducting coil is wound on the other side, and wherein the rotary body rotates in a mechanically non-contact state. 3. One of the stator and the rotating body is equipped with a permanent magnet, and the other has a ring-shaped body around which a superconducting coil is wound. 1. A superconductor motor, which is disposed in a magnetic field, and whose rotational motion is semi-permanently continued by a single current supply.