JP2010127232A - Power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vane motor type power generation device capable of efficiently converting hydraulic energy to electric energy and miniaturized so that it can be used even in a small space. <P>SOLUTION: A turbine 1 includes: a casing 11 having a suction opening and a discharge opening for fluid; a rotor 12 eccentrically provided in the casing 11 and having a plurality of magnets inside thereof; a vane provided freely to appear and disappear relative to the rotor 12; and a group of coils 17 formed of a plurality of coils arranged to be distributed near each magnetic pole of the plurality of magnets outside the casing 11. The rotor 12 is rotated by receiving a hydraulic pressure difference between a suction opening side and a discharge opening side by the vane, and the density of magnetic flux passing through the group of coils 17 is changed by an alternating magnetic field, which is generated by rotation of the rotor 12, to generate voltage. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power generation device that generates electric power using a vane motor that is one of rotation devices for converting energy of a fluid such as water or air into rotation energy.

  Conventionally, a vane motor is known as a rotating device (turbine) that converts fluid energy into rotational energy. The vane motor is a rotating device that has a simple configuration and directly converts a fluid pressure into a rotational force.

  A conventional vane motor will be described with reference to FIG. FIG. 7 is a diagram for explaining a conventional vane motor. In FIG. 7, the upper diagram is an overhead view when the vane motor is viewed from above, and the lower diagram is a cross-sectional view when the vane motor shown in the upper overhead view is cut along a straight line A. .

  As shown in FIG. 7, a turbine 5 as a conventional vane motor includes a casing 51 (outer cylinder member) having a fluid suction port 55 and a suction port 56 and a circular inner wall, and is eccentric in the casing 51. The rotor 52 is arranged. The rotor 52 stores a plurality of vanes (in FIG. 7, six vanes 53a, 53b, 53c, 53d, 53e, and 53f), and the vanes 53a to 53f are pushed by centrifugal force or springs. By being drawn out by various methods, the inner wall of the casing 51 is always in contact and the fluid flow path is completely isolated.

  When a pressure difference is generated between the fluid in the suction port 55 and the fluid in the discharge port 56, a force of “cross-sectional area × pressure” is applied to the vanes 53 a to 53 f, and this force becomes the rotational force of the rotor 52. For example, when the pressure at the suction port 55 is increased, pressure is applied to the vanes 53a to 53f. However, since the center of the rotor 52 is eccentric with respect to the casing 51, the vanes protruding from the rotor 52 are provided. The length of 53a-53f will each differ, and the cross-sectional area which receives force in each vane 53a-53f will also differ. Since the rotor 52 rotates by the sum of the rotational direction components of the forces applied to the vanes 53a to 53f, in the configuration shown in FIG. 7, the rotor 52 starts to rotate clockwise as a result.

  Here, a technique for generating electric power by taking out a central axis of a rotor that rotates by fluid energy and connecting it to a rotary generator is generally known (see, for example, Non-Patent Document 1).

Mechanism of hydropower, [online], [November 20, 2008], Internet <URL: http://www.kepco.co.jp/kids/search/page28.html>

  By the way, the above-mentioned conventional technology requires that a part of the central shaft of the rotor be taken out of the casing in order to generate electric power, and at that time, it is necessary to perform sealing so that the working fluid does not leak from the gap between the shaft and the bearing. There is. However, when the torque loss due to sealing is relatively large with respect to the generated torque, there has been a problem that the energy conversion efficiency from fluid pressure energy to electrical energy is deteriorated.

  In addition, the above-described conventional technology requires a space for installing the generator outside the vane motor and a space for connecting the generator and the central axis of the rotor, and is difficult to use in a narrow place. was there.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and has a high conversion efficiency from fluid pressure energy to electrical energy, and is miniaturized so that it can be used even in a narrow place. Another object is to provide a vane motor type power generator.

  In order to solve the above-described problems and achieve the object, this device is provided with an outer cylinder member having a fluid inlet and outlet, and is eccentrically provided inside the outer cylinder member and magnetized. Alternatively, a rotatable rotor having a plurality of magnets therein, a vane provided so as to protrude and retract with respect to the rotor, and a magnetized portion of the rotor or the plurality of magnets on the outside of the outer cylinder member, respectively A coil group consisting of a plurality of coils arranged in the vicinity of the magnetic pole of the vane, wherein the tip of the vane is in contact with the inner wall of the outer cylinder member to isolate the suction port side and the discharge port side, The vane receives the pressure difference between the fluid at the suction port side and the discharge port side to rotate the rotor, and the voltage is generated by changing the magnetic flux density passing through the coil group by the alternating magnetic field generated by the rotation of the rotor. And requirements to be used to produce.

  Since the disclosed apparatus does not require the rotor rotating shaft to be removed from the fluid-filled interior to the exterior air for power generation, the rotor can be completely sealed within the outer cylinder member, and the O-ring Thus, it is possible to eliminate the torque loss related to the sealing, and to increase the energy conversion efficiency from the fluid pressure energy to the electrical energy. Also, a rotating device (vane motor) that converts fluid energy into rotational energy and a part of a generator (rotor magnetized portion or multiple magnets) that converts rotational energy into electrical energy are integrated. It is possible to reduce the size so that it can be used even in a narrow place.

  Exemplary embodiments of a power generator according to the present invention will be described below in detail with reference to the accompanying drawings.

  The power generation device according to the first embodiment is a device in which a power generation function is added to a turbine (rotary device) as a vane motor. Hereinafter, this will be described with reference to FIGS. 1 is a horizontal cross-sectional view of the power generation apparatus according to the first embodiment, FIG. 2 is an overview when the power generation apparatus according to the first embodiment is viewed from above, and FIG. It is sectional drawing of the perpendicular direction of the electric power generating apparatus in. Here, FIG. 3 is a cross-sectional view in the vertical direction when the power generation device according to the first embodiment is cut along a straight line B shown in FIG.

  As shown in FIG. 1, a turbine 1 as a power generation device according to the first embodiment is arranged such that a rotatable rotor 12 is eccentric in a casing 11 (outer cylinder member) having a circular inner wall. The casing 11 has a fluid suction port 15 and a discharge port 16, and the rotor 12 stores a plurality of vanes (in FIG. 1, six vanes 13a, 13b, 13c, 13d, 13e, and 13f). Has been. The vanes 13a to 13f provided so as to be able to protrude and retract with respect to the rotor 12 are always in contact with the inner wall of the casing 11 by being pressed by a spring (not shown), for example, so as to completely isolate the fluid flow path. .

  As shown in FIG. 1, the turbine 1 as the power generation device in the first embodiment is different from the turbine 5 as the conventional vane motor shown in FIG. 7, and includes a plurality of magnets (magnets 14 a and 14 b) inside the rotor 12. , 14c, 14d, 14e, and 14f). Here, as shown in FIG. 1, the six magnets 14 a to 14 f are arranged at an angle of 60 degrees around the rotation axis of the rotor 12.

  As illustrated in FIG. 2, the turbine 1 as the power generation device according to the first embodiment includes a plurality of coils (coil group 17) on the outer side (upper surface) of the casing 11. Here, as shown in FIG. 2, each of the six coils that are the coil group 17 is arranged at an angle of 60 degrees around the rotation axis of the rotor 12.

  Thereby, each coil of the coil group 17 is distributed and arranged near the magnetic poles of the six magnets 14a to 14f shown in FIG. That is, as shown in FIG. 3, each coil of the coil group 17 is arranged so as to face the magnets (magnets 14f and 14c in the figure) inside the rotor 12 with the casing 11 interposed therebetween, and as a result. The lines of magnetic force generated by the magnets 14 a to 14 f inside the rotor 12 can penetrate the coils of the coil group 17.

  As shown in FIG. 3, the magnet 14c has an N pole on the top surface, and the magnet 14f has an S pole on the top surface. Although not shown in the drawing, similarly to the magnet 14c, the magnet 14a and the magnet 14e have the N pole on the top surface, and similarly to the magnet 14f, the magnet 14b and the magnet 14d have the S pole on the top surface. ing. That is, the six magnets 14a to 14f in the rotor 12 are arranged such that the magnetic poles of the magnets (for example, the magnet 14f and the magnet 14c) facing the rotation axis of the rotor 12 are opposite to each other. .

  In such a configuration, when a pressure difference is generated between the fluid in the suction port 15 and the fluid in the discharge port 16, the rotor 12 starts to rotate by the sum of the rotational direction components of the forces applied to the vanes 13a to 13f (FIG. 1). In the clockwise direction), the magnets 14a to 14f incorporated in the rotor 12 also rotate to generate an alternating magnetic field. By this alternating magnetic field, the magnetic flux density penetrating each coil of the coil group 17 is changed, and an induced electromotive force is generated in each coil, so that electric power can be taken out. For example, as shown in FIG. 2, after the coils are connected in parallel, the generated electromotive force can be taken out. In addition, this invention is not limited to this, The case where the induced electromotive force which generate | occur | produced is taken out after connecting each coil in series may be sufficient.

  For this reason, the turbine 1 as the power generation device according to the first embodiment does not need to take out the power shaft (rotary shaft of the rotor 12) from the inside filled with fluid into the outside air for power generation. The rotor 12 can be completely sealed in the casing 11. That is, the turbine 1 as the power generation device in the first embodiment can eliminate torque loss related to sealing such as an O-ring, and can increase the energy conversion efficiency from fluid pressure energy to electrical energy. .

  Further, the turbine 1 as the power generation apparatus in the first embodiment can incorporate magnets 14 a to 14 f that are part of a generator for converting rotational energy into electric energy in the rotor 12. That is, the turbine 1 as the power generation device in the first embodiment can be integrated with a vane motor that converts fluid energy into rotational energy and a part of the generator, and is downsized so that it can be used even in a narrow place. Is possible.

  In the configuration of the turbine 1 described in the first embodiment described above, the lines of magnetic force generated from the magnets 14a to 14f inside the rotor 12 extend radially and go to the magnetic poles of other magnets. There is a case in which leakage occurs in the lateral direction without penetrating any coil of the coil group 17. In this case, the amount of magnetic flux penetrating the coil group 17 is reduced, and the power generation amount is reduced.

  For this reason, the turbine 2 as the power generation device in the second embodiment is configured as described below with reference to FIG. Here, FIG. 4 is a diagram for explaining the power generation device according to the second embodiment. 4 is a vertical cross-sectional view when the turbine 2 is cut along a straight line corresponding to the straight line B shown in FIG.

  The turbine 2 as the power generation apparatus in the second embodiment has the same configuration as that of the turbine 1 described with reference to FIG. 1, that is, as shown in FIG. 4, a casing 21 having a suction port and a discharge port, and six magnets ( In the drawing, only a magnet 24f and a magnet 24c are shown), and a rotor 22 and a coil group 27 composed of six coils are provided. Although not shown in the drawing, the rotor 22 has six vanes provided so as to protrude and retract as in the first embodiment.

  However, in the second embodiment, as shown in FIG. 4, the magnetic plate 28 is arranged in parallel to the coil group 27 so as to sandwich the coil group 27 together with the casing 21.

  Thereby, in the turbine 2 as the power generation device in the second embodiment, the magnetic field lines generated from the magnetic poles (for example, the magnet 24f) of the rotor 22 penetrate through any one of the coils in the coil group 27 in the vertical direction, and then the magnetic plate A magnetic path is formed that passes through 28 and further passes through another coil of the coil group 27 in the vertical direction and then returns to another magnetic pole (for example, the magnet 24c). Accordingly, the amount of magnetic flux penetrating the coil group 27 can be increased without causing the magnetic lines of force to leak laterally, so that the amount of power generation can be increased. Therefore, the energy conversion efficiency from the fluid pressure energy to the electrical energy can be improved. It can be further increased.

  In addition, the turbine 2 as the power generation device in the second embodiment can prevent the magnetic lines of force from leaking to the outside by disposing the magnetic material plate 28, attracting to an external metal, external electronic equipment or magnetic It also becomes possible to have a function as a magnetic shield that prevents adverse effects on cards and the like.

  Alternatively, if the purpose is to obtain the same amount of power generation as that of the turbine 1 in the first embodiment, in the turbine 2 as the power generation apparatus in the second embodiment, the volume of the necessary magnet can be reduced. It is possible to reduce the weight of the rotor 22 and increase the energy conversion efficiency from fluid pressure energy to electrical energy. In addition, even if it is a case where it is the case where it is the case where it is set as the structure which produces a magnetic field by magnetizing rotor 22 itself instead of a magnet, it is possible to make the turbine 2 function as a power generator. Even in this case, since the volume of the necessary magnetized portion can be reduced, it is possible to reduce the weight of the rotor 22 and increase the energy conversion efficiency from the fluid pressure energy to the electrical energy. .

  In the configuration of the turbine 2 described in the second embodiment, an attractive force is generated between the magnet embedded in the rotor 22 and the magnetic plate 28. As a result, the rotor 22 is tilted, and friction may be generated between the rotating shaft of the rotor 22 and the casing 21 to reduce the energy conversion efficiency into electrical energy.

  Further, in the configuration of the turbine 2 described in the second embodiment, there is no magnetic material that forms a magnetic path in the lower magnetic pole of the rotor 22, so that the magnetic lines of force generated from the lower magnetic pole are in the air. Street returns to another magnetic pole. Such magnetic field lines generated on the lower side may leak out of the power generation system and be attracted to an external metal, or may adversely affect an external electronic device or a magnetic card. That is, in the configuration of the turbine 2 described in the second embodiment, it is necessary to install a magnetic shield in order to reduce the amount of magnetic flux that is generated on the lower side and leaks to the outside.

  For this reason, the turbine 3 as the power generation device in the third embodiment is configured as described below with reference to FIG. Here, FIG. 5 is a diagram for explaining the power generation device according to the third embodiment. FIG. 5 is a vertical sectional view when the turbine 3 is cut along a straight line corresponding to the straight line B shown in FIG.

  The turbine 3 as the power generator in the third embodiment has the same configuration as that of the turbine 1 described with reference to FIG. 1, that is, as shown in FIG. 5, a casing 31 having an inlet and an outlet, and six magnets ( In the drawing, only the magnet 34f and the magnet 34c are shown). Further, although not shown in the drawing, the rotor 32 has six vanes provided so as to protrude and retract as in the first embodiment.

  However, in the third embodiment, as shown in FIG. 5, the first coil group 37 a and the second coil group 37 b are arranged on the upper surface and the lower surface so as to sandwich the casing 31. That is, in the third embodiment, the first coil group 37 a and the second coil group 37 b each including six coils are provided on the upper surface and the lower surface of the casing 31, respectively. Dispersed in the vicinity of the magnetic pole of the magnet.

  Furthermore, in the third embodiment, as shown in FIG. 5, the first magnetic plate 38a is arranged so as to sandwich the first coil group 37a together with the casing 31, and the second magnetic plate 38b is It arrange | positions so that the 2nd coil group 37b may be inserted | pinched with the casing 31. FIG.

  Thereby, in Example 3, since the distance between each of the first magnetic plate 38a and the second magnetic plate 38b and the magnet embedded in the rotor 32 is equal, the first magnetic plate 38a The attractive force generated between the magnets inside the casing 31 and the attractive force generated between the second magnetic plate 38b and the magnets inside the casing 31 are equally symmetric and cancelled.

  Therefore, in the turbine 3 as the power generator in the third embodiment, the attractive force generated between the first magnetic plate 38a and the second magnetic plate 38b and the magnet is zero, and the rotating shaft of the rotor 32 and the casing 31 are reduced. It is possible to prevent friction between the two.

  Further, in the turbine 3 as the power generation device in the third embodiment, most of the magnetic lines of force generated from the six magnets inside the casing 31 pass through the first magnetic plate 38a and the second magnetic plate 38b. Since it passes, compared with Example 2, it can further prevent that a magnetic force line leaks outside.

  Therefore, the turbine 3 as the power generation device according to the third embodiment can further increase the energy conversion efficiency from the fluid pressure energy to the electrical energy.

  Furthermore, the turbine 3 as the power generation device in the third embodiment can also have a function as a stronger magnetic shield.

  Further, in the turbine 3 as the power generation device in the third embodiment, the first coil group 37a and the second coil group 37b generate power. Therefore, if the first coil group 37a and the second coil group 37b are connected in series, a doubled power generation voltage can be obtained as compared with the configuration of the second embodiment, and the first coil group 37a and the second coil group 37b can be obtained. If two coil groups 37b are connected in parallel, twice the current can be obtained and the amount of power generation can be increased.

  In the first to third embodiments, the case where the coil group is arranged on the surface of the casing has been described. In the fourth embodiment, the case where the coil group is arranged inside the casing will be described with reference to FIG. Here, FIG. 6 is a diagram for explaining the power generation device according to the fourth embodiment. 6 is a cross-sectional view in the vertical direction when the turbine 4 as the power generation device in the fourth embodiment is cut along a straight line corresponding to the straight line B shown in FIG.

  The turbine 4 as the power generation device in the fourth embodiment has the same configuration as that of the turbine 3 described with reference to FIG. 5, that is, as shown in FIG. 6, a casing 41 having an inlet and an outlet, and six magnets ( In the drawing, the rotor 42, the first coil group 47a, the second coil group 47b, the first magnetic plate 48a and the second magnetic plate 48b in which the magnet 44f and the magnet 44c are shown) are embedded. Have. Although not shown in the drawing, the rotor 42 has six vanes provided so as to freely protrude and retract as in the first embodiment.

  However, the turbine 4 as the power generator in the fourth embodiment has the same thickness as the coils of the first coil group 47a and the second coil group 47b on the upper surface and the lower surface of the casing 41 as shown in FIG. A plurality of depressions having a depth are formed. The coils of the first coil group 47 a and the second coil group 47 b are housed in the recesses on the upper surface and the lower surface of the casing 41.

  Thereby, the turbine 4 as the power generation device according to the fourth embodiment can bring the first coil group 47a and the second coil group 47b closer to the vicinity of the magnet, which is the place where the magnetic flux density is the highest, and the power generation amount Can be further increased.

  Moreover, since the turbine 4 as the power generation device in the fourth embodiment houses the first coil group 47a and the second coil group 47b in the casing 41, for example, compared with the turbine 3 in the third embodiment, the coil It is possible to reduce the thickness of the power generation device by the thickness of.

  Conventionally, when the casing is thinned for thinning or for bringing the coil close to the magnet, the casing strength is reduced, and the casing may bend without being able to withstand the pressure inside the turbine. However, in the turbine 4 as the power generation device according to the fourth embodiment, the first magnetic plate 48a is in close contact with the first coil group 47a and the casing 41, and the second magnetic plate 48b is the second coil group. 47b and the casing 41 are brought into close contact with each other. Therefore, in the turbine 4 as the power generator in the fourth embodiment, the magnetic plates (the first magnetic plate 48a and the second magnetic plate 48b) are the casing 41, the first coil group 47a, and the second coil group. Since it is in close contact with 47b, the strength can be improved, and the durability against the pressure inside the turbine can be enhanced while reducing the thickness.

  The configuration described in this embodiment can be applied to the first and second embodiments. That is, in Example 1 or Example 2, the coil group 17 or the coil group 27 is housed in six recesses provided on the upper surface of the casing 11 or the casing 21.

  In the present embodiment, the case where each of the plurality of coils is accommodated by the depression having the same depth as the thickness of the coil has been described. However, the present invention is not limited to this, and the first coil group 47a. Each of the second coil group 47b and the second coil group 47b may be embedded in the upper surface and the lower surface of the casing 41, respectively. Further, the configuration in which the coil group is embedded in the casing can also be applied to the first and second embodiments. That is, in Example 1 or Example 2, the coil group 17 or the coil group 27 is manufactured by being embedded in the upper surface of the casing 11 or the casing 21.

  In addition, the structure and operation | movement shown to the above-mentioned Examples 1-4 are an example to the last, and this invention can be suitably changed and utilized, without being limited to an Example. For example, in the first to fourth embodiments, the structure in which the magnet is embedded in the rotor has been described as an example. However, the present invention can be implemented even in a configuration in which a magnetic field is created by magnetizing the rotor itself. . In addition, the fine shape such as the number of magnets and coils, the size of the turbine, and the like can be changed depending on the actual use situation.

  As described above, the power generation apparatus according to the present invention can efficiently convert the fluid pressure energy into electric energy, so that a pressure large enough to ignore the frictional resistance and a large flow rate for obtaining a high rotation speed can be obtained. It becomes possible to generate electricity using various energy that could not be used because it was not possible. For example, it is a force caused by wind power, wave power, human movement, and the like.

  In addition, since the power generation apparatus according to the present invention can be reduced in size, particularly reduced in thickness, a narrow place (in a water pipe, in a gas pipe, in a narrow wall where a turbine could not be installed so far) Etc.). In addition, it is reduced in size and weight and attached to the human body, pressure is applied to the tank containing the fluid by human movement, the turbine is rotated, and electric power is generated using the rotational force to supply power to the portable device. It can also be used for things.

  As described above, the power generation device according to the present invention is useful when power is generated by converting the energy of a fluid into rotational energy, and in particular, the conversion efficiency from fluid pressure energy to electrical energy is high, and Suitable for use in narrow spaces.

It is sectional drawing of the horizontal direction of the electric power generating apparatus in Example 1. FIG. It is a general-view figure at the time of seeing the electric power generating apparatus in Example 1 from the top. It is sectional drawing of the orthogonal | vertical direction of the electric power generating apparatus in Example 1. FIG. It is a figure for demonstrating the electric power generating apparatus in Example 2. FIG. FIG. 10 is a diagram for explaining a power generation device according to a third embodiment. FIG. 10 is a diagram for explaining a power generation device according to a fourth embodiment. It is a figure for demonstrating the conventional vane motor.

Explanation of symbols

1, 2, 3, 4, 5 Turbine 11, 21, 31, 41, 51 Casing 12, 22, 32, 42, 52 Rotor 13a, 13b, 13c, 13d, 13e, 13f, 53a, 53b, 53c, 53d, 53e, 53f Vane 14a, 14b, 14c, 14d, 14e, 14f, 24c, 24f, 34c, 34f, 44c, 44f Magnet 15, 55 Suction port 16, 56 Ejection port 17, 27 Coil group 28 Magnetic plate 37a, 47a First coil group 37b, 47b Second coil group 38a, 48a First magnetic plate 38b, 48b Second magnetic plate

Claims (4)

An outer cylinder member having a fluid inlet and outlet;
A rotatable rotor provided eccentrically inside the outer cylinder member, magnetized, or having a plurality of magnets inside;
A vane provided so as to freely protrude and retract with respect to the rotor;
On the outside of the outer cylinder member, a coil group consisting of a plurality of coils dispersedly arranged in the vicinity of the magnetic poles of the rotor or the magnetic poles of the plurality of magnets,
With
The tip of the vane is in contact with the inner wall of the outer cylinder member to isolate the suction port side and the discharge port side, and the vane receives a pressure difference between the suction port side and the discharge port side to the vane. A power generator that rotates a rotor and generates a voltage by changing a magnetic flux density passing through the coil group by an alternating magnetic field generated by rotation of the rotor.   The power generator according to claim 1, further comprising a magnetic plate arranged in parallel to the coil group so as to sandwich the coil group together with the outer cylinder member. As the coil group, a first coil group and a second coil group arranged so as to sandwich the outer cylinder member,
As the magnetic material plate, a first magnetic material plate arranged so as to sandwich the first coil group together with the outer cylinder member, and a first magnetic material plate arranged so as to sandwich the second coil group together with the outer cylinder member. Two magnetic plates,
The power generation device according to claim 2, further comprising:   Each of the coil groups is embedded in the outer cylinder member, or is housed in each of a plurality of recesses provided in the outer cylinder member and having the same depth as the thickness of each of the coil groups. The power generator according to any one of claims 1 to 3.

Images