JP2008141934A - Power system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently generate electric power making use of daily movements. <P>SOLUTION: A tank 1 and a tank 2 for liquids, which deform by weighting are arranged near a heel within a shoe, and around a root of a big toe of a foot to produce flow of the liquid between the tanks, and a turbine 3 is provided at a flow path. In the turbine 3, a rotor 32 is arranged within a casing 31 in an eccentric state, and fluid entering from an inlet port 38 and fluid discharged from an outlet port 39 are isolated by a vane provided at the rotor 32, and the rotor is rotated by providing the vane with a pressure difference between an inlet port side and an outlet port side. A magnet is provided at the rotor, and a coil and a ferrite are provided at the casing 31 to integrate the turbine to convert fluid energy into rotational energy with a generator to convert the rotational energy into electrical energy. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a power generation device that generates electric power by the action of human life, and more particularly to a power generation device that generates electric power by walking and supplies electric power to portable electric devices.

  In recent years, functions installed in portable devices have been increased and their usage time has been extended, so that power sources such as mobile phones and music players may be cut off when going out. In order to solve this problem, it is necessary that the capacity of the battery mounted on the device is sufficiently large, can be charged anywhere even when going out, or obtains electric power by power generation.

  However, in the current battery technology, when the capacity of the battery is increased, the size and weight of the battery increase, and the portability deteriorates. There is currently no system that can be charged anywhere when going out. Portable power generators such as hand-cranked chargers exist, but they must be consciously charged to get tired.

  Therefore, walking power generation has been devised to generate power without being conscious of it. For example, Patent Document 1 discloses a method in which a piezoelectric element is arranged in an operating part inside a shoe such as a shoe, and the piezoelectric element is distorted by stress caused by walking to obtain electric power. Patent Document 2 discloses walking motion. Discloses a method for obtaining electric power by electromagnetic induction by changing the distance between a magnet and a coil attached to the inside of the shoe.

  Also, by walking, the handle inside the shoe is pushed by weight, and the generator is rotated by the work to obtain power, or a pump is placed inside the shoe, air is taken in from the outside by walking pressure, and the turbine is A method for obtaining electric power by rotating a generator to rotate has been devised.

JP 2004-96980 A Japanese Patent No. 2870330

  However, the above-described conventional technique has a problem in practicality. For example, the method using a piezoelectric element has an advantage that there is almost no sense of incongruity during walking, but with the current technology, the output is at most several tens mW with a size that fits into the shoe sole. For example, the power consumption of a communication device such as a mobile phone is 1 W or more, but there is no practical material that can output 1 W or more.

  As for the method using electromagnetic induction, the electromotive voltage of electromagnetic induction is proportional to the differential of the change in the distance between the magnet and the coil, but an output of 1 W or more cannot be expected at a normal walking speed.

  The method of pushing the handle with the body weight can expect an output of 1 W or more, but a speed increasing mechanism is necessary to increase the efficiency. Therefore, although the gear is used in the conventional method, since noise is generated during operation from the gear, the sound is always generated from the feet when walking, which gives the user an unpleasant feeling.

  Further, the method of rotating the turbine with the air pressure taken in from the outside can expect an output of 1 W or more, and there is no noise because the pressure change of the gas is used as the speed increasing mechanism. However, since the air near the shoe sole is close to the ground, it easily takes in dust, rainwater, and the like. Therefore, operating parts such as a turbine are likely to be worn or deteriorated. In addition, since air is a compressible gas, when the weight is applied to the pump, the gas is compressed at the beginning, and the energy of the entire weight cannot be transmitted to the gas. Also, some of the energy becomes heat and is lost along the walls of the pump.

  As described above, the technology that generates power unconsciously in the present situation has problems such as low power consumption, discomfort to users, fragility, and energy loss. It wasn't.

  The present invention has been made to solve the above-described problems in the prior art and to solve the problems, charging a portable electrical device without conscious work in casual operation of human daily life, It is an object of the present invention to provide a practical power generation device that can prevent the battery of a portable electric device from running out.

  In order to solve the above-described problems and achieve the object, a power generator according to the invention of claim 1 is provided inside an outer cylinder member having a fluid inlet and outlet, and the outer cylinder member, A rotatable rotor having a non-uniform distance from the inner wall of the outer cylinder member, a plurality of vanes protruding from the rotor, the protruding ends contacting the inner wall of the outer cylinder member regardless of the rotational position of the rotor, and the rotor One or more magnetic bodies that are fixed to the rotor and move as the rotor rotates, and electromagnetic induction means that performs electromagnetic induction in response to a change in magnetic flux density that occurs as the magnetic body moves. When the pressure is received by the vane due to the pressure difference between the fluid on the mouth side and the outlet side, the rotor rotates in a predetermined direction due to a change in the distance between the rotor and the outer cylinder member, and the rotation By the electricity Characterized in that draw power from the inductive means.

  According to a second aspect of the present invention, there is provided the power generator according to the first aspect, wherein the electromagnetic induction means includes a ferrite core fixed to the outer cylinder member, and a conductive wire wound around the ferrite core. And a coil.

  A power generator according to a third aspect of the invention is characterized in that, in the first or second aspect of the invention, the rotor is provided at a position eccentric with respect to the center of the outer cylinder member.

  Moreover, in the invention according to claim 1 or 2, the power generation device according to the invention of claim 4 is such that the outer cylinder member has a shape in which the inner wall is substantially circular and a part of the inner circumference is raised in the inner direction, The rotor has the same center position as the outer cylinder member.

  According to a fifth aspect of the present invention, there is provided a power generation apparatus according to any one of the first to fourth aspects, wherein two or more liquid tanks whose internal volume changes due to external weighting, and a user's The liquid flows between the mounting means for mounting on the user's body so that the weight applied to the liquid tank changes according to the operation, and the two or more liquid tanks based on the change in the internal volume. A flow path, and the outer cylinder member is provided on the flow path.

  According to a sixth aspect of the present invention, in the power generation device according to the fifth aspect of the present invention, the wearing means is a shoe, and a weight is applied in the vicinity of the toe of the user's foot and a weight is applied in the vicinity of the heel. It is characterized in that a load is applied to different liquid tanks depending on the state.

  According to the first aspect of the present invention, the power generator is provided with a rotatable rotor having a non-uniform distance from the inner wall of the outer cylinder member inside the outer cylinder member having a fluid inlet and outlet and protruded from the rotor. By contacting the vane with the inner wall of the outer cylinder member, the pressure difference of the fluid on the inlet side and the outlet side is received by a plurality of vanes, the rotor is rotated in a predetermined direction, and one or more magnetic bodies are fixed to the rotor. In addition, electromagnetic induction is performed in response to a change in magnetic flux density caused by the movement of the magnetic material. Therefore, even if the flow rate is small and the rotation speed is extremely low, the turbine is rotated by the pressure of the fluid, and power is efficiently generated using the rotation of the turbine. be able to.

  Therefore, it is possible to generate liquid flow by using casual movements of daily life such as walking, and to efficiently generate power using the energy of the flow, charging portable electric devices without conscious work, It is possible to obtain a practical power generator that can prevent the battery from running out.

  According to a second aspect of the present invention, a power generator is provided with a rotatable rotor having a non-uniform distance from an inner wall of an outer cylinder member in an outer cylinder member having a fluid inlet and outlet, and from the rotor. The protruding vanes are brought into contact with the inner wall of the outer cylinder member to receive a pressure difference between the suction port side and the discharge port side by a plurality of vanes to rotate the rotor in a predetermined direction, and the rotor has one or more magnetic bodies. Since the ferrite core and the conductive wire coil are provided in the casing, there is an effect that it is possible to obtain a simple power generator that can efficiently generate power from the rotation of the rotor.

  According to a third aspect of the present invention, in the power generation device, a rotatable rotor is eccentrically provided inside an outer cylindrical member having a fluid inlet and outlet, and a vane protruding from the rotor is provided on the outer cylindrical member. By contacting the inner wall, the pressure difference of the fluid on the inlet side and the outlet side is received by a plurality of vanes, the rotor is rotated in a predetermined direction, one or more magnetic bodies are fixed to the rotor, and the magnetic body is moved. Therefore, electromagnetic induction is performed in response to a change in magnetic flux density caused by this, so that even if the flow rate is small and the rotation is extremely low, the turbine can be rotated by the pressure of the fluid, and power can be generated efficiently using the rotation of the turbine.

  According to a fourth aspect of the present invention, in the power generation apparatus, the rotor is concentrically arranged with respect to the outer cylindrical member having an inner wall having a substantially circular shape and a part of the inner circumference protruding inward, and protrudes from the rotor. The generated vane is brought into contact with the inner wall of the outer cylinder member, so that when a pressure is applied to the plurality of vanes due to the pressure difference between the suction port side and the discharge port side, the vane is generated depending on whether the inner wall is raised or not. The rotor is rotated in a predetermined direction on the basis of the difference in each pressing, and one or more magnetic bodies are fixed to the rotor, and electromagnetic induction is performed in response to a change in magnetic flux density caused by the movement of the magnetic body. Even with very low rotation, the turbine can be rotated by the pressure of the fluid, and power can be generated efficiently using the rotation of the turbine.

  Further, according to the invention of claim 5, since the power generation device causes the liquid to flow by the operation of the user and efficiently uses the pressure and momentum of the flow, the power generation device is in a casual operation of human daily life. There is an effect that it is possible to obtain a power generation device capable of generating power efficiently without conscious work.

  In addition, since the power generation device according to the invention of claim 6 causes the liquid to flow by moving the weight of the user and efficiently uses the pressure and momentum of the flow, the power generation device efficiently uses the operation such as walking. It is possible to obtain a power generating device capable of generating electric power.

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

  The present invention extracts rotational energy from an energy source whose flow rate and flow rate vary greatly. In this embodiment, a flow is generated from human walking, and the rotational energy extracted from the flow as an energy source is used for power generation. The case of using will be described.

  FIG. 1 is an explanatory view illustrating a schematic configuration of a shoe having a rotating device according to an embodiment of the present invention. As shown in the figure, a soft tank 1 and a tank 2 are arranged inside the shoe at two points where the most pressure is applied during walking, for example, the heel and the base of the big toe. Tank 1 and tank 2 are filled with liquid and connected by pipe 41.

  Accordingly, when pressure is alternately applied to the tank 1 and the tank 2 by the walking operation, the liquid moves in the pipe 41. A turbine 3 that is a rotating device is provided on the moving path, and the generator can be operated by connecting the turbine 3 and the generator to generate power.

  In the turbine 3, a rotor 32 is eccentrically arranged in a circular casing (outer cylinder) 31. The rotor 32 stores a plurality of vanes (six vanes 33a, 33b, 33c, 33d, 33e, and 33f in the figure), and each vane is pushed by a spring and is always in contact with the inner wall of the casing 31. Yes. The spring is provided for each vane. For example, the spring 34a corresponds to the vane 33a.

  In the rotor 32, a plurality of magnets (six magnets 35a, 35b, 35c, 35d, 35e, and 35f in the figure) are embedded. 1 and 2, the casing 31 has a U-shaped ferrite core so that the magnet is sandwiched from the upper surface and the lower surface, and a coil is wound around the ferrite core. ing.

  As a result, a magnetic path is formed from the north pole of the rotor magnet, through the ferrite core, through the coil, and back to the south pole of the rotor magnet. For example, the magnetic flux emitted from the magnet 35a passes through the ferrite core 36a, passes through the coil 37a, and returns to the magnet 35a again.

  Further, the suction port 38 and the discharge port 39 are connected so that liquid can be taken in and out from the side surface of the casing 31.

  Next, the operation will be described. When a pressure difference occurs between the liquid at the suction port 38 and the liquid at the discharge port 39, a force of cross-sectional area × pressure is applied to each vane. Since the rotor is eccentric, the total force applied to all the vanes is the rotational force of the rotor.

  As the rotor 32 rotates, the volume of the space sandwiched between the vanes inside the casing 31 changes. As the volume increases on the suction port side, the liquid flows into the space, and on the discharge port side, the volume decreases and the liquid is pushed out. With this series of flows, the liquid can transmit energy corresponding to the product of its pressure difference and volume to the rotor 32 via each vane.

  Since the high-pressure side and the low-pressure side are completely partitioned by the vanes, the fluid does not slip through without transmitting energy to the blades as in a conventional propeller turbine, for example. Therefore, the pressure can be reliably converted into rotational energy without losing energy from the region where the rotational speed is zero.

  And when a rotor rotates, the magnet embedded in the rotor will also rotate and an alternating magnetic field will generate | occur | produce in the upper part and lower part of a rotor. Due to this alternating magnetic field, the magnetic flux density in the ferrite core changes, an induced electromotive force is generated in the coil, and the electric power can be taken out.

  Further, as shown in FIG. 3, with respect to the casing 31 having a circular inner periphery, a protruding portion 31 a that narrows the inner wall toward the inside may be provided for a part of the periphery, and the rotor 32 may be disposed concentrically. In this configuration, a plurality of vanes (six vanes 33g, 33h, 33i, 33j, 33k, 33l in the figure) are attached to the rotor 32, and each vane is made of a soft material such as rubber. Each vane bends easily and has elasticity on the side that extends in the bent state. Since the length of the vane is longer than the distance from the side surface of the rotor 32 to the inside of the outer cylinder member 31, the vane is bent between the casing 31 and the rotor 32, and the tip of each vane has a restoring force (elastic force) of the vane. ) To press the casing 31.

  The operation of the configuration shown in FIG. 3 will be described. When a pressure difference occurs between the liquid at the suction port 38 and the liquid at the discharge port 39, a force of cross-sectional area × pressure is applied to each vane. The rotational direction component of the force becomes the rotational force of the rotor 32. For example, when the pressure at the suction port 38 increases, pressure is applied to the vanes 33h and 33l. The pressure applied to the vane 33l is a force for rotating the rotor clockwise, and the pressure applied to the vane 33h is a force for rotating the rotor counterclockwise.

  Here, since the vane 33h is bent by the casing narrowed inward, the rotational direction component of the force applied to the vane is reduced. Since the rotor rotates by the sum of the rotational direction components of the force applied to each vane, the rotor rotates clockwise as a result.

  That is, the raised portion 31a of the casing 31 produces an effect of defining the rotation direction of the rotor 32 by changing the cross-sectional area of the fluid flow path in the rotor.

  As the rotor 32 rotates, the volume of the space sandwiched between the vanes inside the casing 31 changes. As the volume increases on the suction port side, the liquid flows into the space, and on the discharge port side, the volume decreases and the liquid is pushed out. With this series of flows, the liquid can transmit energy corresponding to the product of its pressure difference and volume to the rotor 32 via each vane.

  Further, in the configuration shown in FIG. 3, the rotor 32 is provided with a single magnet 35g, the casing 31 is provided with a single ferrite core 36g, and a coil 37g is wound around the ferrite core 36g.

  Even in the case of the configuration shown in FIG. 3, as in the configuration shown in FIG. 1, the rotor 32 is efficiently rotated in a predetermined direction using the pressure difference between the fluid at the suction port side and the discharge port side. In addition, an alternating magnetic field is generated by rotation of a magnet embedded in the rotor, and electric power can be taken out. Note that the number of magnets and the number of ferrite cores can be arbitrarily set, and the number of magnets and the number of ferrite cores do not need to be the same.

  In this way, by integrating the turbine that converts fluid energy into rotational energy and the generator that converts rotational energy into electrical energy, the device can be miniaturized and incorporated into narrow places such as shoe soles. Become optimal.

  Moreover, since it is not necessary to take out the power shaft from the inside of the turbine filled with fluid into the outside air, the rotor can be completely sealed in the casing, and the loss related to sealing such as an O-ring can be eliminated. it can.

  Next, an example of the structure inside the shoe will be described in more detail with reference to FIG. As shown in the figure, the tank 1 and the tank 2 are connected by a pipe 41 and a pipe 42. Further, the pipe 43 connects the pipes 41 and 42, and the check valve 51, 52, 53, 54 allows the liquid to always flow through the pipe 43 only in one direction.

  For example, when pressure is applied to the tank 1, the check valves 51 and 53 are closed, and liquid flows from the check valve 52 through the pipe 43 to the check valve 54. Similarly, when pressure is applied to the tank 2, the check valves 52 and 54 are closed, and liquid flows from the check valve 51 through the pipe 43 to the check valve 53.

  The turbine 3 in the middle of the pipe 43 is rotated by the pressure and momentum of the liquid flowing through the pipe 43. The turbine 3 generates an alternating current by this rotation. The power storage element 7 is an element that stores generated power. The charging circuit 6 is located between the turbine 3 and the power storage element 7 and has a function of rectifying an alternating current generated in the turbine 3 and a function of adjusting the voltage of the power storage element 7.

  Here, the configuration in the case where the generated power source is once stored in the power storage element 8 is described as an example, but an arbitrary configuration may be employed such as, for example, directly outputting the current generated in the turbine 3 to the outside. it can.

  As described above, the vane rotates while contacting the wall of the casing 31, so that the suction side and the discharge side are completely separated without being connected. As a result, the turbine can be rotated by the pressure of the fluid even when the flow rate is small and the rotation is extremely low.

  Therefore, it becomes possible to use various energies that could not be used because a stable flow rate and flow rate cannot be obtained. For example, it is a force of waves, a force caused by walking of a person, a gust of wind blowing between buildings, and the like.

  In addition, by incorporating generator elements such as coils, ferrites, and magnets into the turbine, the turbine that converts fluid energy into rotational energy and the generator that converts rotational energy into electrical energy are integrated to reduce the size of the device. It can be realized and is most suitable for incorporation in a narrow place such as a shoe sole. Further, since it is not necessary to take out the power shaft from the inside of the turbine filled with fluid into the outside air, the rotor can be completely sealed in the casing, and the loss related to the sealing such as the O-ring can be eliminated. it can.

  Note that the configuration shown in this embodiment is merely an example, and can be implemented with appropriate modifications. For example, the installation location is not limited to shoes, and it is also possible to generate electricity by installing in a location where a pressure difference is generated, such as a hip joint, and bending and stretching the hip joint.

  Furthermore, when the user performs power generation by hand or the like, or uses the wave force or the building wind, it is possible to efficiently extract energy by applying the present invention.

  As described above, the power generation device according to the present invention is suitable for converting the energy of the fluid into electrical energy, and is particularly suitable for being placed in a place that needs to be made small, such as the sole of a shoe.

It is explanatory drawing explaining the schematic structure of the shoes which have the rotating apparatus which is an Example of this invention (the 1). FIG. 2 is a cross-sectional view taken along line AA of the turbine illustrated in FIG. 1. It is explanatory drawing explaining the schematic structure of the shoes which have the rotating apparatus which is an Example of this invention (the 2). It is explanatory drawing explaining the structural example inside the shoes shown in FIG. 1 and FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Tank 3 Turbine 31 Casing 32 Rotor 33a-33l Vane 34a Spring 35a-35g Magnet 36a-36g Ferrite core 37a-37g Coil 38 Inlet 39 Outlet 41-43 Pipe 51-54 Check valve 6 Charging circuit 7 Electric storage element

Claims (6)

An outer cylinder member having a fluid inlet and outlet;
A rotatable rotor provided inside the outer cylinder member, and having a non-uniform distance from the inner wall of the outer cylinder member;
A plurality of vanes protruding from the rotor, the protruding ends contacting the inner wall of the outer cylindrical member regardless of the rotational position of the rotor;
One or more magnetic bodies fixed to the rotor and moving as the rotor rotates;
Electromagnetic induction means for performing electromagnetic induction in response to a change in magnetic flux density caused by the movement of the magnetic body;
With
When the pressure difference between the fluid on the suction port side and the discharge port side is received by the vane and the pressure is generated, the rotor rotates in a predetermined direction due to a change in the distance between the rotor and the outer cylinder member, A power generator that extracts electric power from the electromagnetic induction means by the rotation.   The said electromagnetic induction means is provided with the ferrite core fixed with respect to the said outer cylinder member, and the conducting wire coil wound around the said ferrite core, The electric power generating apparatus of Claim 1 characterized by the above-mentioned. .   The power generator according to claim 1, wherein the rotor is provided at a position eccentric with respect to a center of the outer cylinder member.   3. The outer cylinder member according to claim 1, wherein the inner wall has a substantially circular inner shape and a part of the inner circumference is raised in the inner direction, and the rotor has the same center position as the outer cylinder member. The power generator described in 1. Two or more liquid tanks whose internal volume changes due to external load,
A mounting means for mounting on the user's body so that the load on the liquid tank changes with the user's action;
A flow path for flowing a liquid between the two or more liquid tanks based on the change in the internal volume,
The power generation apparatus according to claim 1, wherein the outer cylinder member is provided on the flow path.   6. The liquid tank according to claim 5, wherein the wearing means is a shoe, and a weight is applied to different liquid tanks in a state in which a weight is applied in the vicinity of a toe of the user's foot and a state in which the weight is applied in the vicinity of a heel. Power generation device.

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