Electric power generator

Abstract

To provide an electric power generator capable of efficiently generating electric power.SOLUTION: An electric power generator is provided which comprises: a rotation axis 13 to which a magnet 10 is rotatably fixed; and a container 20 which houses the rotation axis 13 and supports a coil 21, and both ends of the rotation axis 13 have cone-shaped portions, and the distal ends of the cone-shaped portions abut against the end faces of the container 20, consequently the rotation axis 13 is journaled within the container 20. The rotational force of a rotating mechanism 33 is transmitted to the rotation axis 13 through a transmission mechanism provided midway between both of the ends.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a generator capable of generating electricity efficiently. [Background technology]

[0002] Conventionally, generators generate electricity by placing a coil formed by winding a conductor close to a magnet and rotating the magnet relative to the coil, or by rotating the coil relative to the magnet, thereby generating an induced current in the coil. In this way, when the magnetic flux linking the coil changes over time, an electromotive force is generated in the coil.

[0003] In conventional generators, in order to rotate coils or magnets, the rotating shaft is rotated at high speed by a gas or steam turbine, at low speed by a water wheel, or driven by various types of engines or windmills.

[0004] The inventor has previously proposed a generator in which a rotor rotates inside a container, in which the tip of the rotating shaft is shaped into a cone or pyramid shape, thereby reducing the contact resistance between the rotating shaft and the bottom of the container that supports the lower end of the rotating shaft (Patent Document 1 below). This generator is called a "top-type generator" because the rotor rotates like a top. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7345746 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention is an improvement over the previously proposed top-type generator, and aims to provide a generator which further reduces the contact resistance of the rotor, thereby enabling even greater improvement in power generation efficiency. [Means for solving the problem]

[0007] The generator of the present invention is a generator comprising a rotating shaft to which one of a magnet and a coil is rotatably fixed, and a container that houses the rotating shaft and supports the other of the magnet and coil, wherein both ends of the rotating shaft or both end faces of the container supporting the ends have conical portions, and the rotating shaft is journaled within the container with the tip of the conical portion abutting the end of the rotating shaft that does not have the conical portion or the end face of the container, and the rotational force of the rotating mechanism is transmitted to the rotating shaft through a transmission mechanism provided halfway between the both ends.

[0008] In the generator of the present invention, the rotating shaft is journalled within the container so as to be parallel to the direction of gravity.

[0009] In the generator of the present invention, the rotating shaft is supported within the container so as to be perpendicular to the direction of gravity.

[0010] In addition, in the generator of the present invention, the magnet is a disk-shaped magnet, composed of a magnet with a north pole on one side of the disk and a south pole on the other side, and a magnet with a south pole on the one side of the disk and a north pole on the other side, and the coil is composed of a plurality of coils arranged on a disk facing the disk-shaped magnet.

[0011] In addition, in the generator of the present invention, the magnet is a cylindrical magnet and is composed of a magnet with a north pole on one end face of the cylinder and a south pole on the other end face, and a magnet with a south pole on the one end face of the cylinder and a north pole on the other end face, and the coil is composed of a plurality of coils arranged on the inner surface of the container facing the cylindrical magnet.

[0012] In addition, in the generator of the present invention, the coil comprises a coil wound around an electrically insulating bobbin, the magnet comprises a semi-cylindrical magnet formed by vertically dividing a cylinder in half, and the semi-cylindrical magnet is fixed to the inner wall of the container with the divided surfaces having different magnetic poles facing each other.

[0013] In the generator of the present invention, the contact distance between the rotating shaft and the support member during one rotation is short, so the contact resistance at both ends of the rotating shaft is small and the rotation efficiency of the rotor is excellent. In addition, the rotor of the generator can be rotated at high speed, improving the efficiency of power generation. Effect of the Invention

[0014] The generator of the present invention has a rotor with good rotational efficiency, is capable of high-speed rotation, and can achieve high power generation efficiency. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram showing a generator according to a first embodiment of the present invention. [Diagram 2] FIG. 2( a ) is a diagram showing the configuration on the container side of FIG. 1 , and FIG. 2( b ) is a diagram showing the configuration on the magnet side of FIG. 1 . [Diagram 3] FIG. 2 is a diagram showing a modification of FIG. 1; [Figure 4] FIG. 4 is a diagram showing a generator according to a second embodiment of the present invention. [Diagram 5] FIG. 5( a ) is a diagram showing the configuration on the container side of FIG. 4 , and FIG. 5( b ) is a diagram showing the configuration on the magnet side of FIG. 4 . [Figure 6] FIG. 6 is a diagram showing a modification of FIG. 5 . [Figure 7] 13A and 13B are diagrams showing modified examples of the support structure for the rotating shaft. [Figure 8] FIG. 2 is a diagram showing the circuit configuration of a generator when the coil is fixed. [Figure 9] FIG. 13 is a diagram showing the circuit configuration of a generator when the coil rotates. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the embodiment of the present invention will be described based on examples.

[0017] FIG. 1 shows the overall structure of a generator according to a first embodiment. In this generator, as the disk-shaped magnet 10 housed in the container 20 rotates, an electromotive force is generated in multiple coils 21 on a disk 30 fixed inside the container 20 so as to face the disk-shaped magnet 10.

[0018] 2(a) shows the configuration of the container 20, and FIG. 2(b) shows the configuration of a rotor 100 that rotates inside the container 20. The rotor 100 has a disk-shaped permanent magnet 10 fixed to a rotation shaft 13. The rotating shaft 13 has an upper end 13(1) and a lower end 13(2) formed in a conical shape. The tip of this conical portion is supported by fulcrums 23 on the upper end surface 20(1) and the lower end surface 20(2) of the container 20. In addition, an insertion port 22 for a rotating shaft 33(1) that transmits the rotation of the rotating mechanism 33 is provided on the upper end surface 20(1) of the container 20. A gear 33(2) attached to this rotating shaft 33(1) meshes with a transmission mechanism (gear) 13(3) provided on the rotating shaft 13, thereby transmitting the rotational force of the rotating mechanism 33 to the rotating shaft 13.

[0019] A disk-shaped permanent magnet 10 is fixed to a rotating shaft 13. It is configured into a disk shape by combining a magnet with a north pole on one side and a south pole on the other side, and a magnet with a south pole on one side and a north pole on the other side. A plurality of coils 21 facing the disk-shaped magnet 10 are arranged on the surface of a disk 30 fixed inside the container 20, facing the magnet 10. A hole 30(1) through which the rotating shaft 13 passes is provided in the center of the disk 30.

[0020] In this generator, the rotational force of the rotating mechanism 33 is transmitted to the rotating shaft 13 through the gear 33(2) and the transmission mechanism (gear) 13(3), and the rotating shaft 13, whose tips of the conical portions of the upper end 13(1) and the lower end 13(2) are supported by the fulcrum 23, and the magnet 10 fixed thereto rotates within the container 20. As the magnet 10 rotates, the interlinking magnetic flux of the coil 21 changes over time, so that an electromotive force is generated in the coil 21.

[0021] 8 is a schematic diagram showing a circuit for storing the induced current induced in the coils 21 in the storage battery 32. The alternating current generated from each coil 21 is rectified by the rectifier 31 and stored in the storage battery 32.

[0022] The contact area between the rotating shaft 13 and the fulcrums 21 on the upper end surface 20(1) and the lower end surface 20(2) of the container 20 that supports the upper and lower parts of the rotating shaft 13 is small. Also, the contact distance between the rotating shaft 13 and the fulcrum 21 during one rotation is short. Therefore, the contact resistance is small, the rotation efficiency can be increased, and high-speed rotation is possible.

[0023] Next, a modified example of the present invention will be described. 3 shows a configuration in which a disk 30 supporting a coil 21 is fixed to a rotating shaft 13, the coil 21 rotates, and the magnet 10 is fixed within a container 20. A through hole 10(1) of the rotating shaft 13 is provided at the center of the magnet 10. The other configuration is the same as in FIG. In this case as well, as the coil 21 rotates, the interlinkage magnetic flux of the coil 21 changes over time, so that an electromotive force is generated in the coil 21.

[0024] 9 is a schematic diagram of a circuit for storing the induced current induced in the rotating coil 21 in the storage battery 32. The current induced in the coil 21 is extracted by a slip ring 51 and a brush 52 and input to a rectifier 31, and then stored in the storage battery 32.

[0025] FIG. 4 shows the overall structure of the generator in the second embodiment. In this generator, a rotating shaft 13 is supported laterally (in a direction perpendicular to the direction of gravity) within a container 20. Figure 5(a) shows the container 20 side of this generator, and Figure 5(b) shows the magnet 10 side. Magnet 10 is formed into a cylindrical shape by combining semi-cylindrical permanent magnet 10(1) with a south pole on one end and a north pole on the other end, and semi-cylindrical permanent magnet 10(2) with a north pole on one end and a south pole on the other end. In addition, both ends of a rotating shaft 13 disposed at the center of the cylindrical magnet 10 protrude from both ends of the cylindrical magnet 10, and both ends are formed into a conical shape.

[0026] Further, a transmission mechanism (gear) 13(3) for transmitting the rotational force of the rotation mechanism 33 is attached to the portion of the rotation shaft 13 protruding from one side of the cylindrical magnet 10.

[0027] On the other hand, a plurality of coils 21 are attached to the inner wall portion of the container 20 facing the cylindrical magnet 10. The manner in which the rotating shaft 13 is mounted in the container 20 is the same as that shown in FIG. In this generator as well, a current is induced in a coil 21 fixed to a container 20 by the rotation of a cylindrical magnet 10 together with a rotating shaft 13 . The generator shown in FIG. 4 can also be installed so that the rotation axis 13 is parallel to the center of gravity.

[0028] Figure 6 shows a modification of Figure 4. In this generator, the coil side rotates and the magnet side is fixed. As shown in Fig. 6(a), semi-cylindrical permanent magnets 41 and 42, which are obtained by vertically dividing a cylinder into two, are arranged with their divided surfaces facing each other on the inner wall of the container 20. The divided surfaces of the magnets 41 and 42 facing each other have different magnetic poles.

[0029] On the other hand, the coil 21 is formed by winding an electric wire around an electrically insulating bobbin 50. Both ends of the rotating shaft 13 attached to the bobbin 50 are formed into a conical shape. The structure for mounting this rotating shaft 13 inside the container 20 is similar to that shown in FIG. 1 and FIG. In this generator, too, as the coil 21 rotates together with the rotating shaft 13, the interlinking magnetic flux of the coil 21 changes over time, so that an electromotive force is generated in the coil 21.

[0030] The structure for supporting both ends of the rotating shaft 13 may be such that a conical protrusion 23(1) is provided on the side of the container 20, and the tip of the protrusion is brought into contact with the flat end surface of the rotating shaft 13, as shown in FIG.

[0031] In the present invention, the rotating mechanism 33 that rotates the rotating shaft 13 may be a gas or steam turbine, an engine, a water wheel, a windmill, or the like. [Industrial Applicability]

[0032] INDUSTRIAL APPLICABILITY The generator of the present invention can be widely used as a power generating source in various industrial fields, and can also be used as a learning material in educational settings. [Explanation of symbols]

[0033] 10 Cylindrical magnet 10(1) A semi-cylindrical magnet with a south pole on one end and a north pole on the other end 10(2) A semi-cylindrical magnet with a north pole on one end and a south pole on the other end 13 Rotation axis 13(1) Cone-shaped part 13(2) Cone-shaped part 13(3) Transmission mechanism (gear) 20 containers 20(1) Top surface 20(2) Lower end surface 21 Coil 22 Insertion port 23 Fulcrum 23(1) Cone-shaped part 30 Disc 30(1) Through hole 31 Rectifier 32 Storage battery 33 Rotation mechanism 33(1) Insertion port for the rotating shaft of the rotating mechanism 33(2) Gear 41 Magnet 42 Magnet 50 Bobbin 51 Slip ring 52 Brush

Claims

1. A generator comprising: a rotating shaft to which one of a magnet and a coil is rotatably fixed; and a container that houses the rotating shaft and supports the other of the magnet and the coil, Both ends of the shaft or both end faces of the container supporting the ends are provided with conical portions; The tip of the conical portion abuts against an end of the rotating shaft not having the conical portion or an end surface of the container, and the rotating shaft is supported in the container; A generator in which the rotational force of a rotation mechanism is transmitted to the rotating shaft through a transmission mechanism provided midway between the two ends.

2. 2. The generator of claim 1, The generator is supported within the container so that the rotation axis is parallel to the direction of gravity.

3. 2. The generator of claim 1, The generator, wherein the rotation shaft is journalled within the container in a direction perpendicular to the direction of gravity.

4. A generator according to any one of claims 1 to 3, the magnet is a disk-shaped magnet, and is composed of a magnet with a north pole on one side of the disk and a south pole on the other side, and a magnet with a south pole on the one side of the disk and a north pole on the other side, The coil is a generator comprising a plurality of coils arranged on a disk facing the disk-shaped magnet.

5. A generator according to any one of claims 1 to 3, the magnet is a cylindrical magnet, and is composed of a magnet having an N pole on one end face of the cylinder and an S pole on the other end face, and a magnet having an S pole on the one end face of the cylinder and an N pole on the other end face, The coil comprises a plurality of coils disposed on an inner surface of the vessel facing the cylindrical magnet.

6. A generator according to any one of claims 1 to 3, The coil is wound around an electrically insulating bobbin; A generator in which the magnet comprises a semi-cylindrical magnet formed by vertically dividing a cylinder in half, and the semi-cylindrical magnet is fixed to the inner wall of the container with the divided surfaces having different magnetic poles facing each other.

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