WO2001057994A1

WO2001057994A1 - Rotating power generator and electric generator using magnet

Info

Publication number: WO2001057994A1
Application number: PCT/KR2001/000135
Authority: WO
Inventors: Hoon Chul Lim
Original assignee: Hoon Chul Lim
Priority date: 2000-02-02
Filing date: 2001-02-01
Publication date: 2001-08-09
Also published as: AU2001232376A1; KR20010077338A

Abstract

The present invention relates to a rotating power generator and a method for producing rotating power by using magnets, and to an electric generator and a method for generating electricity by using the rotating power generator and the method therefor. In order to realize these generators and methods, the present invention comprises a shaft; an electric generator secured to one end of the shaft; disc-shaped rotating wheels secured to the shaft; rotary magnets concentrically mounted on the circumference of the rotating wheel; and stationary magnets disposed between the rotating wheels and having alternating polarities at their ends close to the rotating wheels. The repulsive force between the rotary magnets on the rotating wheels and the stationary magnets rotates the rotating wheel, so that rotating power drives the electric generator to generate electricity. Therefore, according to the present invention, the rotating power can be obtained for a long time, and in turn, electricity can be generated by means of the rotating power.

Description

ROTATING POWER GENERATOR AND ELECTRIC GENERATOR USING MAGNET

Technical Field

The present invention relates to a power generator and a method for producing rotating power by using magnets, and to an electric generator and a method for generating electricity by using the rotating power from the power generator.

Background Art

Heretofore, many devices using a permanent magnet or an electromagnet have been developed. For example, the permanent magnet or the electromagnet has been used in a crane or a magnetic levitation train. However, these devices have used magnetic force of the magnet only for lifting heavy objects. However, if rotating power is obtained by using the magnetic force of such a permanent magnet and electricity is generated by the obtained rotating power for a long time, the obtained rotating power and electricity may be used for various applications. In view of economical efficiency, once the devices using the permanent magnet have been installed, the devices become effective energy sources so that the rotating power or the electricity can be obtained free of charge for a long time.

Disclosure of Invention

Thus, the present invention is conceived from this point of view. The object of the present invention is to provide a device for obtaining electricity by obtaining rotating power by using only permanent magnets and then rotating a shaft of an electric generator by the obtained rotating power, without using a power generator driven by any external energy source, such as a device for generating power by burning liquid or solid fuel, or an electric power generator. Brief Description of Drawings

FIG. 1 is a drawing illustrating the principle of the present invention.

FIG. 2 is a schematic drawing of an electric generator using magnets according to the present invention. FIG. 3 is a drawing showing the arrangement relationship between rotating wheels and stationary magnets according to the present invention.

FIG. 4 is a schematic drawing of a rotating power generator to which the present invention is applied.

FIGS. 5 to 9 show a variety of embodiments of rotary magnets and the stationary magnets according to the present invention.

Best Mode for Carrying Out the Invention

Referring to FIG. 1, the principle of the present invention will be explained. Generally, a magnet has an N-pole and an S-pole. Between two magnets, same polarity poles of the magnets repel each other, and different polarity poles thereof attract each other. As shown in FIG. 1, when one magnet (a stationary magnet 1) is fixed and the other magnet (a rotary magnet 2) is disposed so that two magnets are not in a straight line, repulsive force always acts in a direction of an extension of the stationary magnet 1 (the direction designated by an dot line). When one side (S-pole) of the rotary magnet 2 remote from the stationary magnet 1 is rotatablely fixed, the rotary magnet 2 is repelled to rotate in a counter-clockwise direction. In addition, when a plurality of rotary magnets 2 are mounted along the circumference of a rotating disc secured to an arbitrary shaft, repulsive force will rotate the rotating disc. Therefore, an electric generator secured to the shaft can generate electricity by the rotating power. Now. a preferred embodiment of the present invention using the above principle will be explained in detail.

As shown in FIG. 2. rotating wheels 12 are secured to a shaft 3 corresponding to a shaft of an electric generator (not shown). As shown in FIG. 3, rotary magnets 4 are mounted on the vicinity of a periphery of each of the rotating wheels 12. As shown in FIG. 2, each of the stationary magnets 11 is interposed and fixed between the rotating wheels 12 so that magnetic poles of the stationary magnets 11 are disposed in an alternating manner.

Further, at least two rotary magnets 4 are disposed on the circumference of each of the rotating wheels 12, as shown in FIG. 3. In order to avoid unstable rotation due to unbalance generated by mounting a small number of rotary magnets, it is desirable to mount a large number of rotary magnets 4 as far as the space allows. The rotary magnets 4 on one side of each of the rotating wheels 12 have an identical polarity (for example, N- pole in FIG. 3). When each of the rotating wheels 12 has the same number of the rotary magnets 4 having similar magnetic intensity, smooth rotation can be made and the difficulties due to the repulsive force between the rotary magnets in mounting them is prevented. The more the rotary magnets 4 of each of the rotating wheels 12 are, the higher the magnetic field intensity becomes. This is advantageous to a high capacity. If the rotating wheel 12 is small in size, only two rotary magnets 4 may be used. Especially, if a magnet that is small in size but has strong magnetic force, such as an ND (Neodymium) magnet, is used, it is advantageous in that more rotary magnets 4 can be mounted on each of the rotating wheels 12 to obtain a high capacity.

The stationary magnets 11 are positioned between the rotating wheels 12 so that their polarities are arranged in an alternating manner as shown in FIG. 2. In order to obtain repulsive force of same polarity poles as described with reference to FIG. 1 , the side of the stationary magnet 11 facing the rotating wheel 12 has the same polarity as the rotary magnets 4 on the rotating wheel 12. For example, in FIG. 3, the polarities of the rotary magnets 4 on the rotating wheel 12 are N-poles, and the polarity of the side of the adjacent stationary magnet 11 closely facing the rotating wheel 12 is an N-pole. Preferably, in order to make the rotating power applied to each of the rotating wheels 12 uniform and prevent irregular rotation due to inconstant force, it is preferable that the stationary magnets 1 1 are in the middle of the facing rotating wheels 12. The intensity of each stationary magnet 11 is properly selected in consideration of the magnetic intensity of each rotary magnet 4, the structures and arrangements of the stationary magnets 11 and the rotary magnets 12 (the distance between the rotary magnet 4 and the stationary magnet 1 1 , the gap between the rotating wheels 12. etc.), the weights of the rotating wheel 12 and the rotary magnet 4. and so forth. However, if the intensity of the stationary magnet 1 1 is very high, overload to the rotating wheels 12 will be generated due to unbalanced rotation. To the contrary, if it is very low, the rotating wheels 12 will not be rotated. According to the experiment result, the intensity of one stationary magnet largely depends on the degree of coupling between the stationary magnet 1 1 and the rotary magnet 4 (for example, the degree of surrounding). For example, in case of a bar-type magnet as shown in FIG. 2, the intensity of one stationary magnet is approximately 1.5 to 2 times larger than that of one rotary magnet, and in case of a cylinder-type as shown in FIG. 9, it is proper that the intensity of one stationary magnet be approximately 1 time larger than that of one rotary magnet. However, this multiple values are not absolute but should be suitably set up in consideration of the above. One method of determining the intensity of each stationary magnets is as follows. After the entire arrangement is completed, the stationary magnet is substituted with an electromagnet having the same shape as the stationary magnet. When the proper magnetic intensity of the electromagnet is determined, the stationary magnet having the intensity corresponding to that of the electromagnet is selected.

In addition, in order to effectively rotate the rotating wheel 12 by the repulsive force between the rotary magnet 4 and the stationary magnet 11 , it is preferable to direct the extension line of N- and S-poles of the stationary magnet (the lengthwise direction of the stationary magnet 1 1 in FIG. 3) to the vicinity of the circumference of the rotating wheel 12. if possible. Then, the highest rotating power can be obtained. (In FIG. 3, in order to show that the stationary magnet 1 1 is directed to the edge of the rotating wheel 12, the stationary magnet 1 1 is shown as being spaced apart from the rotating wheel 12. However, in practical, the stationary magnet is further advanced to the rotating wheels to be disposed between the rotating wheels 12 as shown in FIG. 2.)

The narrower the gap between the rotating wheels 12 becomes, the larger the distance between the stationary magnet 11 and the shaft 3 becomes. This is to direct the rotary magnet 4 to the lengthwise direction of the stationary magnet 1 1 so that the rotating power can be increased.

When the stationary magnets 11 and the rotary magnets 12 are disposed as shown in FIGS. 2 and 3, the rotating wheels 12 are rotated due to the repulsive force according to the principle as shown in FIG. 1 since the polarities of the stationary magnets 11 and the rotary magnets 4 adjacent thereto are the same.

Especially, in order to obtain higher rotating power, the even-numbered rotating wheels 12 (two in FIG. 2) and the stationary magnets 11 the number of which is larger than the rotating wheels 12 (three in FIG. 2) by one are effective. In order to increase the rotating power (electric power generation capacity), the structure as shown in FIG. 2 may be repeated as shown in FIG. 4.

Hereinafter, a variety of embodiments associated with the mounting positions of the rotary magnets 4 and the shapes and arrangements of the stationary magnets 11 will be described.

In FIG. 5, the rotary magnets 4 are disposed along the edge of the rotating wheel 12 in the form of wing. In FIG. 6, the rotary magnets 4 are embedded in grooves recessed in the rotating wheel 12. In FIGS. 5 and 6, the stationary magnets 11 are disposed along the edge of the rotating wheel 12 in the form of rice scoop. By forming one magnet or by combining bar-type magnets in the form of rice scoop, the stationary magnet 11 taking the shape of rice scoop is formed. In FIGS. 5 and 6, since the rice scoop-shaped stationary magnet 1 1 is disposed closely to and along the edge of the rotating wheel 12, the degree of coupling between the rotary magnet 4 and the stationary magnet 11 is better than that of the embodiment of FIG. 2.

In FIG. 7, the rotary magnets 4 are disposed lengthwise along the edge of the rotating wheel 12, and the stationary magnet 11 is formed by a plurality of magnets (three in FIG. 7) in the form of crescent. In FIG. 7. for the convenience of illustration, it appears that the stationary magnet 11 is spaced apart from the rotating wheel 12. However, in practical, as shown in FIG. 8, it is fitted between the rotating wheels 12. Similar to the case shown in FIGS. 5 and 6. the degree of coupling between the stationary magnet 1 1 and the rotary magnet 4 is better than that of the embodiment of FIG. 2. In FIG. 9, the rotary magnets 4 are embedded as shown in FIG. 6, and the stationary magnets 11 surround the rotating wheel in a cylindrical form by using a plurality of stationary magnets (three in FIG. 9). In this case, the degree of coupling between the stationary magnet 11 and the rotary magnet 4 is maximized. Meanwhile, in the structures as shown in FIGS. 5 to 9, one stationary magnet comprises a plurality of magnets or is complex as compared with the structure as shown in FIG. 2. In order to rotate the rotating wheels 12 by making the resultant repulsive force larger than the resultant attracting force, that is, by making the resultant repulsive force between the plurality of rotary magnets 4 and the plurality of stationary magnets 11 larger than the resultant attracting force therebetween, it is necessary to determine more precise arrangement and magnetic intensity as compared with the structure in FIG. 2.

For example, since the rotating wheels are rotated together with the rotary magnets attached thereto, it is difficult to adjust their magnetic intensity. Therefore, after the rotary magnets and the rotating wheels are properly selected and disposed, the mounting position and magnetic intensity of an electromagnet for rotating the rotating wheel is determined by using the electromagnet instead of permanent magnets as the stationary magnet. Thus, the stationary magnet having the determined magnetic intensity is positioned at the determined position.

Especially, it should be noted that the embodiments associated with the stationary and rotary magnets as shown in FIGS. 5 to 9 may be combined, if necessary.

Meanwhile, the material for the rotating wheel 12 and the shaft 3 need not to be specified. However, they are preferably fabricated from the material that is not affected by magnetism, that is, the material that is not attracted by a magnet, so that the stationary magnet 11 and the rotary magnet 4 do not have influence on themselves. For example, in order to facilitate rotation, the rotating wheel 12 is preferably fabricated from light aluminum-based material. Stainless steel material having good strength may be used in fabricating the shaft 3. In addition, the structure for supporting the shaft 3 and the electric generator is fabricated from the same material as the rotating wheel 12 and the shaft 3. which is not affected by magnetism, such as aluminum or stainless steel material. In addition, in order to prevent the entire structure from being affected by an exterior magnetic field, a magnetism shielding structure, for example, a case surrounding the entire structure may be installed. It is also preferable to fabricate the magnetism shielding structure from the material that is not affected by magnetism. Finally, if necessary, in order to reduce the rotational speed of the shaft, a braking device may be mounted on the shaft.

Industrial Applicability

According to the present invention as described above, rotating power can be obtained by permanent magnets and electricity can be generated for a long time by this rotating power. Once the power generator or the electric generator is installed, the rotating power or electricity can be supplied free of charge for a long time. Therefore, in view of economical efficiency, it will become an effective energy source.

Descriptions of Reference Numerals of Main Features Shown in Drawings

1, 11 : Stationary magnet

2, 4: Rotary magnet

3: Shaft

12: Rotating wheel

Claims

1. A rotating power generator using permanent magnets, comprising: a shaft 3 connected to an electric generator; at least one rotating wheel 12 secured to said shaft; at least two rotary magnets 4 circumferentially mounted through each of said rotating wheels on the vicinity of the circumference of each of said rotating wheels 12, said rotary magnets on one side of each of said rotating wheels 12 having an identical polarity, said rotary magnets on the facing sides of said rotating wheels 12 having an identical polarity; and at least one stationary magnet 11 spaced apart from and between both sides of said at least one rotating wheel, said stationary magnets having the same polarity as said rotary magnets 12 on the adjacent rotating wheels, the magnetic intensity of each of said stationary magnets being larger than that of each rotary magnet 4.

2. A rotating power generator using permanent magnets, comprising: a shaft 3 connected to an electric generator; at least one rotating wheel 12 secured to said shaft; at least two rotary magnets 4 mounted on each of said rotating wheels 12 in an identical polarity pattern such a manner that they protrude from the vicinity of the circumference of each of said rotating wheels 12 in the form of wing so as to have identical polarity arrangement; and at least one stationary magnet 11 spaced apart from and between both sides of said at least one rotating wheel in an alternating polarity manner, the magnetic intensity of each of said stationary magnets being larger than that of each rotary magnet 4.

3. A rotating power generator using permanent magnets, comprising: a shaft 3 connected to an electric generator; at least one rotating wheel 12 secured to said shaft; at least two rotary magnets 4 mounted on each of said rotating wheels 12 in an identical polarity pattern such as manner that they are vertically embedded in each of said rotating wheels 12 so as to have identical polarity arrangement; and at least one stationary magnet 11 spaced apart from and between both sides of said at least one rotating wheel in an alternating polarity manner, the magnetic intensity of each of said stationary magnets being larger than that of each rotary magnet 4.

4. A rotating power generator using permanent magnets, comprising: a shaft 3 connected to an electric generator: at least one rotating wheel 12 secured to said shaft; at least two rotary magnets 4 mounted on each of said rotating wheels 12 in an identical polarity pattern, the lengthwise direction of said rotary magnets being substantially identical with the tangential direction of the circumference of each of said rotating wheel 12 so that their polarities alternate along the circumference of each of said rotating wheels 12; and at least one stationary magnet 11 spaced apart from and between both sides of at least one rotating wheel in an alternating polarity manner, the magnetic intensity of each of said stationary magnets being larger than that of each rotary magnet 4.

5. A rotating power generator using permanent magnets, comprising: a shaft 3 connected to an electric generator: at least one rotating wheel 12 secured to said shaft; at least two rotary magnets 4 circumferentially mounted on the vicinity of the circumference of each of said rotating wheels 12: and stationary magnet modules 11 disposed in an alternating polarity manner and containing a plurality of stationary magnets in the form of cylinder surrounding each of said rotating wheels, the magnetic intensity of each of the stationary magnets being larger than that of each rotary magnet 4.

6. The rotating power generator as claimed in Claims 1 to 4, wherein an end of each of said stationary magnets close to each of the rotating wheels is directed to the vicinity of an edge of said rotating wheel.

7. The rotating power generator as claimed in Claims 1 to 4, wherein the number of said stationary magnets is larger than that of said rotating wheels by one.

8. The rotating power generator as claimed in Claims 1 to 5, wherein even-numbered rotary magnets are mounted on each of said rotating wheels.

9. The rotating power generator as claimed in Claims 1 to 5, wherein the magnetic intensity of each stationary magnet is about 1.0 to 2.0 times larger than that of each rotary magnet.

10. The rotating power generator as claimed in Claims 1 to 5, wherein each of said rotary magnet is an ND magnet.

11. The rotating power generator as claimed in Claims 1 to 5, wherein each of said stationary magnets is formed by combining a plurality of magnets having smaller size.

12. The rotating power generator as claimed in Claims 1 to 4, wherein said stationary magnets are installed at equal intervals relative to the adjacent rotating wheels.

13. The rotating power generator as claimed in Claims 1 to 4, wherein said stationary magnet takes the shape of rice scoop.

14. The rotating power generator as claimed in Claims 1 to 4, wherein each of said stationary magnets takes the shape of crescent.

15. The rotating power generator as claimed in Claims 1 to 5, wherein each of said stationary magnets is formed by disposing a plurality of permanent magnets on a supporting structure taking the shape of crescent, in an identical polarity pattern.

16. A method for obtaining rotating power by using permanent magnets, comprising the steps of: connecting a shaft 3 to an electric generator; securing at least one rotating wheel 12 to said shaft; circumferentially mounting at least two rotary magnets 4 on the vicinity of the circumference of each of said rotating wheels 12; and disposing at least one stationary magnet 11 to be spaced apart from said at least one rotating wheel in an alternating polarity manner, the magnetic intensity of each of said stationary magnets being larger than that of each rotary magnet 4.

17. A method for obtaining rotating power by using permanent magnets, comprising the steps of: connecting a shaft 3 to an electric generator; securing at least one rotating wheel 12 to said shaft; circumferentially mounting at least two rotary magnets 4 on the vicinity of the circumference of each of said rotating wheels 12; and disposing at least one stationary magnet module 11 disposed in an alternating polarity manner and containing a plurality of stationary magnets in the form of cylinder surrounding each of said rotating wheels, the magnetic intensity of each of said stationary magnets being larger than that of each rotary magnet 4.

18. An electric generator using said generator as claimed in Claims 1 to 5.

19. A method for generating electricity by using said generator claimed in Claims 16 and 17.