JP2011074796A - Faucet hydroelectric generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a faucet hydroelectric generator capable of stably generating power by suppressing a variation in an opening area of an injection hole even at relatively high flow rate. <P>SOLUTION: The faucet hydroelectric generator includes: a cylinder portion 2 having a supply water flow channel formed therein; a bucket portion 12 including a bucket blade portion 12a and provided in the supply water flow channel; a magnet 5 rotatable integrally with the bucket portion; a coil 15 disposed in the radial direction of the magnet and configured to generate electromotive force by rotation of the magnet; a nozzle portion 3 including a plurality of injection ports configured to cause water to be squirted toward the bucket blade portion. The nozzle portion includes a first nozzle casing portion 10 which comprises a stepped hole at the center portion and also comprises, at the peripheral edge portion, a plurality of nozzle grooves opening to the end face of the side of a sealing portion, and a second nozzle casing portion 9 which comprises, at the peripheral edge portion, contact portions projecting toward the sealing portion and which is provided so as to close the opening of the stepped hole of the first nozzle casing portion. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  Aspects of the present invention generally relate to a faucet hydroelectric generator, and more particularly to a faucet hydroelectric generator that generates electric power using a flow of water supply.

  In recent years, electrical systems have been incorporated into faucet devices. For example, a water faucet device is known that incorporates a sensor that senses a hand that is placed under a faucet and an electromagnetic valve that opens and closes a water supply path based on a signal from the sensor. In addition to this, LED (Light Emitting Diode) illumination is incorporated in the vicinity of the water discharge port, and the color of light applied to the water discharge is changed according to the temperature of the water discharge.

When such an electric system is incorporated in a faucet device, a power source for operating the electric system is required. In this case, a commercial power supply can be used, but electrical wiring work is separately required when installing the faucet device. In addition, since wiring is performed outside the faucet device, the appearance is deteriorated and the wiring is obstructed. On the other hand, if a battery is used as the power source, it is not necessary to perform electrical wiring work when installing the faucet device. Further, it is not necessary to perform wiring outside the faucet device. However, if a battery is used as the power source, a new problem arises that the battery needs to be replaced and maintenance is required. Moreover, even if it uses any commercial power supply and a battery, the problem from a viewpoint of resource saving and energy saving will arise.
Therefore, in order to obtain electric power necessary for the operation of the electric system incorporated in the faucet device, a small faucet hydroelectric generator has been disposed in the flow path of the faucet device.

Here, as a hydroelectric generator, water flowing from a direction parallel to the rotation center axis is caused to flow in from the radially outward direction of the moving blade portion, and the introduced water is discharged in the axial direction of the moving blade portion. It is known (see, for example, Patent Document 1).
The hydroelectric generator disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2005-299634) changes the direction of water flow substantially parallel to the axial direction of the impeller 4 (the moving blade portion), thereby changing the blade portion 412 (the moving portion). A communication hole 241 (injection hole) for ejecting water from the radially outward direction of the blade blade toward the blade portion 412 (moving blade blade) is provided. And the water sprayed to the blade | wing part 412 (moving blade blade) flows out to the axial direction of the impeller 4 (moving blade part) in the vicinity of the center of the impeller 4 (moving blade part). (For example, refer to [0041] in FIG. 4 of Patent Document 1 (Japanese Patent Laid-Open No. 2005-299634)).

Here, in the hydraulic power generator disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2005-299634), the injection hole (communication hole 241) is a very important element.
In this case, in the hydroelectric generator disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2005-299634), the peripheral wall 24 and the injection plate 23 are integrally formed, and a communication hole 241 (injection hole) is formed on the side surface thereof. (See, for example, [0037] in FIG. 4 of Patent Document 1 (Japanese Patent Laid-Open No. 2005-299634), FIG. 4).
However, if the peripheral wall 24 and the injection plate 23 are integrally formed and the communication holes 241 (injection holes) are provided on the side surfaces thereof, it becomes difficult to remove the mold during molding.

  In this case, if the element in which the injection hole is provided is divided, it is possible to easily remove the die at the time of molding. However, if the element provided with the injection hole is simply divided, the element divided by the water pressure may be deformed, and the opening area of the injection hole may change. And if the opening area of an injection hole changes, appropriate injection cannot be performed and there exists a possibility that electric power generation efficiency may fall. In particular, since the water pressure increases as the flow rate increases, the change in the opening area of the injection holes may increase.

In this case, if the element in which the injection hole is provided is divided and a plurality of peripheral portions are fixed with an adhesive or the like, the element divided by the hydraulic pressure is deformed, and the opening area of the injection hole is changed. Can be suppressed. However, if the element provided with the injection hole is fixed with an adhesive or the like, a new problem arises that the adhesive leaks into the injection hole and the opening area of the injection hole changes.
Therefore, even when the element provided with the injection holes is divided and power is generated at a relatively large flow rate, an improvement that suppresses the change in the opening area of the injection holes and enables stable power generation is desired. It was.

JP 2005-299634 A

  The aspect of the present invention is made based on recognition of such a problem, and suppresses a change in the opening area of the injection hole even when the element provided with the injection hole is divided to generate power at a relatively large flow rate. Thus, a faucet hydroelectric generator capable of stable power generation is provided.

1st invention has a feed water inlet and a feed water outlet, the cylinder part by which the feed water flow path was formed in the inside, a moving blade blade | wing part, and the moving blade provided in the said feed water flow path , A magnet that can rotate integrally with the moving blade portion, a coil that generates an electromotive force by the rotation of the magnet disposed in the radial direction of the magnet, and a jet of water toward the moving blade blade portion A nozzle portion having a plurality of injection holes, and a sealing portion provided at a water supply inlet of the cylindrical portion, and the nozzle portion includes a stepped hole in a central portion and is provided on a side of the sealing portion. A step of the first nozzle housing portion including a first nozzle housing portion provided with a plurality of nozzle grooves opening in an end face at a peripheral portion, and a contact portion protruding toward the sealing portion at the peripheral portion. A second nozzle housing part provided so as to close the opening of the attached hole, and the injection hole The nozzle groove of one nozzle housing part and the second nozzle housing part are formed, and the second nozzle housing part is formed by the sealing part through the contact part. A faucet hydroelectric generator characterized by being in contact with a nozzle casing.
As described above, if the elements provided with the injection holes are integrally formed and the injection holes are provided on the side surfaces thereof, it becomes difficult to remove the mold during molding. On the other hand, if the element provided with the injection hole is divided, it is possible to facilitate die cutting at the time of molding, but the element divided by the water pressure is deformed, and the opening area of the injection hole is changed. There is a risk that. In particular, since the water pressure increases as the flow rate increases, the change in the opening area of the injection holes may increase. In this case, if the element in which the injection hole is provided is divided and a plurality of peripheral portions are fixed with an adhesive or the like, the element divided by the hydraulic pressure is deformed, and the opening area of the injection hole is changed. Can be suppressed. However, if the element provided with the injection hole is fixed with an adhesive or the like, a new problem arises that the adhesive leaks into the injection hole and the opening area of the injection hole changes.
Therefore, in the first invention, the nozzle portion 3 is divided into the second nozzle housing portion 9 and the first nozzle housing portion 10 so that die cutting and molding are facilitated (see FIG. 24).
Further, by inserting the second nozzle casing 9 into the stepped hole 10b of the first nozzle casing 10, an injection hole 19 is formed by the second nozzle casing 9 and the nozzle groove 10a. I try to do it. Therefore, the injection hole 19 can be formed with high accuracy.
Further, the second nozzle housing part 9 is pressed and fixed to the first nozzle housing part 10 via the contact part 9 b by the sealing part 6. Therefore, since no adhesive is used, there is no possibility that the opening area of the injection hole 19 changes.
In addition, when the water pressure that lifts the sealing portion 6 is applied, the contact portion 9b that is in contact with the sealing portion 6 is separated. In this case, the second nozzle housing portion 9 is Since it will be pressed against the 1st nozzle housing | casing part 10, the change of the opening area of the injection hole 19 can be suppressed.
Further, since the second nozzle housing 9 and the first nozzle housing 10 are pressed and fixed, the second nozzle housing 9 and the first nozzle housing 10 are deformed by water pressure or the like. There is no fear. Therefore, there is no possibility that the opening area of the injection hole 19 changes during power generation, and stable power generation can be performed.
In addition, since the second nozzle casing 9 is fitted into the stepped hole 10b of the first nozzle casing 10, the second nozzle casing 9 and the first nozzle casing The displacement in the radial direction with respect to 10 can be suppressed. Moreover, it can suppress that the opening area of the injection hole 19 varies by the position shift of the radial direction of the 2nd nozzle housing | casing part 9 and the 1st nozzle housing | casing part 10. FIG.

In a second aspect based on the first aspect, the first nozzle casing has a surface that abuts against an inner wall surface of the cylindrical section, and the second nozzle casing is the first nozzle casing When the second nozzle housing part is provided in the stepped hole of the first nozzle housing part, the guiding part is provided at the peripheral edge of the end of the first nozzle housing part. The faucet hydroelectric generator is characterized in that a portion and a corner portion of the stepped hole come into contact with each other.
In the second invention, since the guiding portion 9c is provided at the peripheral edge of the end of the second nozzle housing portion 9, the second nozzle housing portion 9 is formed in the stepped hole of the first nozzle housing portion 10. The workability at the time of fitting in 10b can be improved. Further, the peripheral surface of the first nozzle housing 10 and the inner wall surface of the large diameter portion 2a are in contact, and the end of the second nozzle housing 9 and the stepped portion of the stepped hole 10b are in contact. It is like that. Therefore, it can suppress that water leaks from these parts.

  According to the aspect of the present invention, even when the element in which the injection hole is provided is divided to generate power at a relatively large flow rate, the water that enables stable power generation by suppressing the change in the opening area of the injection hole A plug hydroelectric generator can be provided.

It is a schematic cross section for illustrating about the faucet hydroelectric generator concerning an embodiment of the invention. 1 is a schematic exploded view of a faucet hydroelectric generator according to an embodiment of the present invention. It is a schematic diagram for demonstrating the example of arrangement | positioning of the water generator for faucets which concerns on embodiment of this invention. It is a schematic diagram for illustrating a stator. It is a model perspective view for illustrating a comparative example. It is a model perspective view for illustrating a comparative example. It is a model perspective view for illustrating the hole as a thrust reduction part. It is a schematic diagram for illustrating the peripheral position of a cover part. It is a schematic diagram for illustrating the relationship between an injection hole and a cover part. It is a schematic diagram for illustrating the relationship between an injection hole and a cover part. It is a schematic diagram for illustrating the relationship between the shape of a moving blade blade | wing part and a cover part. It is a schematic diagram for demonstrating the relationship between a cover part and the bottom face of a moving blade flow path. It is a schematic diagram for demonstrating the relationship between a cover part and the bottom face of a moving blade flow path. It is a schematic diagram for demonstrating the relationship between a cover part and the bottom face of a moving blade flow path. It is a schematic diagram for demonstrating the relationship between a cover part and the bottom face of a moving blade flow path. It is a schematic diagram for illustrating the cover part which has a peripheral part, a shaft holding part, and a rib. It is a schematic diagram for illustrating the case where three ribs are provided so as to be rotationally symmetric. It is a schematic diagram for illustrating the pressure chamber as a thrust reduction part. FIG. 6 is a schematic diagram for illustrating “positional relationship between an end surface of a magnet and an end surface of a yoke” as a thrust reduction unit. FIG. 6 is a schematic diagram for illustrating “positional relationship between an end surface of a magnet and an end surface of a yoke” as a thrust reduction unit. FIG. 6 is a schematic diagram for illustrating “positional relationship between an end surface of a magnet and an end surface of a yoke” as a thrust reduction unit. It is a schematic diagram for demonstrating about the positional relationship of the end surface of a magnet and the end surface of a yoke. It is a mimetic diagram for illustrating the case where a plurality of stators are provided. It is a mimetic diagram for illustrating a situation where the 1st nozzle housing part and the 2nd nozzle housing part are fixed. It is a schematic diagram for illustrating a setting part. It is a schematic diagram for illustrating the relationship between a convex part and a yoke. It is a schematic diagram for illustrating about attachment of a magnet. It is a schematic diagram for illustrating about attachment of a magnet. It is a schematic diagram for illustrating about attachment of a magnet.

Hereinafter, embodiments of the present invention will be illustrated with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic cross-sectional view for illustrating a faucet hydroelectric generator according to an embodiment of the present invention.
FIG. 2 is a schematic exploded view of the faucet hydroelectric generator according to the embodiment of the present invention.
FIG. 3 is a schematic diagram for explaining an arrangement example of the faucet hydroelectric generator according to the embodiment of the present invention.
First, an arrangement example of the faucet hydroelectric generator 1 shown in FIG. 3 will be described.
The example illustrated in FIG. 3 is a case where the faucet hydroelectric generator 1 is provided in the so-called shower faucet device 100, 100a.
Such shower faucet devices 100 and 100a are provided in a bathroom, for example. 3A shows a case where the shower head 105 is provided so as to be separated from the wall surface 101, and FIG. 3B shows a case where the shower head 105 is provided so as to abut on the ceiling surface 102.

As shown in FIGS. 3A and 3B, the shower faucet devices 100 and 100 a are provided with a flow regulating valve 103, a temperature regulating valve 104, a shower head 105, and a faucet hydroelectric generator 1. .
The flow rate adjustment valve 103 is connected via a pipe 106 to a water supply source (not shown) that supplies tap water and the like. The amount of water discharged from the shower head 105 can be adjusted by operating an operation handle 103 a provided on the flow rate adjustment valve 103.

  The temperature adjustment valve 104 is connected to the flow rate adjustment valve 103 via a pipe 107. Moreover, it connects with the hot water unit which does not show in figure which supplies warm water via piping. And the temperature of the water discharged from the shower head 105 can be adjusted by operating the operation handle 104a provided in the temperature adjustment valve 104 to change the mixing ratio of the supplied water and the hot water. It is like that.

The faucet hydroelectric generator 1 is connected to the temperature adjustment valve 104 via a pipe 108. The faucet hydroelectric generator 1 is connected to the shower head 105 via a pipe 109. In this case, as shown in FIG. 3A, the faucet hydroelectric generator 1 can be provided inside the space defined by the wall surface 101, for example, in the bathroom. Moreover, as shown in FIG.3 (b), it can provide outside the space defined by the wall surface 101, the ceiling surface 102, etc., for example, outside a bathroom.
The shower head 105 is provided with a shower hole (not shown) so that the supplied water can be discharged like a shower.

  In such shower faucet devices 100 and 100 a, the flow rate of water supplied through the pipe 106 is adjusted by the flow rate adjusting valve 103, and the temperature is adjusted by the temperature adjusting valve 104. Then, the water discharged from the temperature control valve 104 is discharged from the shower head 105 in a shower shape via the faucet hydroelectric generator 1. At this time, power generation is performed using the hydraulic power of the water flowing through the faucet hydroelectric generator 1. The generated electric power is used, for example, for light-up, generation of electrolyzed functional water such as alkali ion water or silver ion-containing water, flow rate display (metering), temperature display, voice guide, and the like.

As will be described later, the faucet hydroelectric generator 1 according to the present embodiment can improve the power generation efficiency even when the water discharge flow rate is relatively large, and wear the receiving portion 2e and the like described later. Can be reduced. Therefore, it can be said that the faucet hydroelectric generator 1 is preferably provided in the shower faucet devices 100 and 100a, but is not limited thereto. For example, the faucet hydroelectric generator 1 can be provided in a faucet device having a relatively large water discharge flow rate such as a toilet faucet device provided in a toilet or a urinal. Further, the faucet hydroelectric generator 1 may be provided in a kitchen faucet device, a living-dining faucet device, a toilet faucet device, or the like. In this case, for example, the faucet hydroelectric generator 1 can be provided in a faucet device having a water discharge flow rate of about 8 liters / minute or more.
As described above, the “water faucet” in this specification includes not only a general water faucet but also a “shower” and a “urinal cleaning device”.

Next, returning to FIG. 1 and FIG. 2, the faucet hydroelectric generator 1 will be illustrated.
The faucet hydroelectric generator 1 is mainly provided with a cylindrical portion 2, a nozzle portion 3, a rotor 4, a magnet 5, a sealing portion 6, a stator 7, and a stator holding portion 8. In addition, the arrow drawn in the figure represents the direction of flowing water.

  The cylindrical portion 2 has a stepped shape having a large diameter portion 2a, a medium diameter portion 2b, and a small diameter portion 2c. The cylinder part 2 has a water supply inlet and a water supply outlet, and the water supply flow path is formed in the inside. Inside the cylindrical portion 2, a sealing portion 6, a nozzle portion 3, a rotor 4, and a magnet 5 are provided in this order from the upstream side. Further, the blade 6 a of the moving blade 12 provided in the sealing portion 6, the nozzle 3, and the rotor 4 is provided inside the large-diameter portion 2 a, and the movement of the blade 12 provided in the rotor 4. The blade boss portion 12b and the magnet 5 are provided inside the medium diameter portion 2b.

  A receiving portion 2e that holds one end of the shaft 13 is provided inside the small diameter portion 2c. The receiving portion 2e and the inner wall surface of the small-diameter portion 2c are coupled by a connecting member (not shown) provided radially. Since each connection member is not closed and penetrates, the flow of water flowing out from the hole 12e described later is not hindered. Further, an upstream end of the receiving portion 2e and a holding portion 12g described later are brought into contact with each other through the spacer 20. Therefore, the thrust force 110 that pushes the rotor 4 downstream can be supported by the receiving portion 2e. That is, the receiving part 2e supports the thrust force 110 applied to the moving blade part 12 (rotor 4).

  Moreover, piping which is not shown in figure is connected to the small diameter part 2c and the sealing part 6, and the inside of the cylinder part 2 is connected to a water supply flow path. In this case, for example, as illustrated in FIG. 3, the cylindrical portion 2 is disposed so that the central axis direction thereof is substantially parallel to the direction of running water. The cylindrical portion 2 is disposed with the small diameter portion 2c facing the downstream side and the large diameter portion 2a facing the upstream side.

  The sealing part 6 is provided at the feed water inlet of the cylinder part 2. A stepped hole is provided inside the sealing portion 6 so that the stepped hole communicates with the water supply channel. The opening at the upstream end of the large-diameter portion 2a is closed by the sealing portion 6 via the O-ring 18 so as to be liquid-tight. An internal thread portion 2d is provided in the vicinity of the opening at the upstream end of the large diameter portion 2a. And the sealing part 6 can be fixed to the opening of the upstream end of the large diameter part 2a by screwing the male screw part 6a provided on the side surface of the sealing part 6 and the female screw part 2d. It has become. In addition, when the sealing part 6 is fixed to the opening of the upstream end of the large diameter part 2a, the position in the axial direction of the second nozzle housing part 9 to be described later is restricted. Will be described later.

  The nozzle portion 3 allows water flowing from a direction parallel to the rotation center axis to move from the radially outer direction of the bucket blade portion 12a to the bucket blade portion 12a in a plane substantially perpendicular to the rotation center axis. It has the several injection hole 19 which ejects toward.

The nozzle unit 3 is provided with a second nozzle housing unit 9 and a first nozzle housing unit 10.
The second nozzle housing 9 has a disk shape, and a housing boss 9a that protrudes toward the upstream side is provided at the center. In addition, a plurality of contact portions 9 b that protrude toward the upstream side are provided on the peripheral edge portion of the second nozzle housing portion 9. A concave portion that rotatably holds one end of the shaft 13 is provided in the housing boss portion 9a. Further, the upstream end face of the contact portion 9 b is in contact with the sealing portion 6. A guide portion 9 c is provided on the peripheral edge of the second nozzle housing portion 9. Note that the contact portion 9 b is not necessarily provided in the second nozzle housing portion 9, and may be provided in the sealing portion 6.

  The 1st nozzle housing | casing part 10 exhibits an annular | circular shape, and the stepped hole 10b is provided in the inside. The corner portion 10c of the stepped portion of the stepped hole 10b is shaped so as to be in contact with the guiding portion 9c provided on the peripheral edge of the second nozzle housing portion 9. In addition, a plurality of nozzle grooves 10 a penetrating through the stepped holes 10 b are provided on the peripheral surface of the first nozzle housing portion 10. Then, the axial position of the contact portion 9 b is regulated by the sealing portion 6, so that the second nozzle housing portion 9 is fixed so as to close the upstream end opening of the first nozzle housing portion 10. It has come to be. Further, when the second nozzle housing part 9 is fixed to the first nozzle housing part 10, an injection hole 19 is formed by the second nozzle housing part 9 and the nozzle groove 10 a. ing. In the space formed inside the first nozzle housing part 10 by fixing the second nozzle housing part 9 to the first nozzle housing part 10, the moving blade part of the moving blade part 12 12a is provided. The injection hole 19 is opened toward the moving blade blade portion 12a housed in a space formed inside the first nozzle housing portion 10, and its direction is circumscribed by the moving blade blade portion 12a. It is oriented inward from the tangential direction of the circle. According to such an injection hole 19, the water flowing from the direction parallel to the rotation center axis moves from the radially outward direction of the rotor blade blade 12 a in a plane substantially perpendicular to the rotation center axis. It can be made to eject toward the blade blade part 12a. Moreover, the direction of the water ejected from the injection hole 19 comes to be inward from the tangential direction of the circumscribed circle of the moving blade blade 12a.

The rotor 4 is provided with a lid portion 11, a moving blade portion 12, and a shaft 13.
The lid 11 has a plate shape and is provided with a hole that penetrates the lid 11 in the axial direction of the blade blade 12a (hereinafter referred to as a hole that penetrates the thickness direction of the lid). The lid portion 11 is provided at the upstream end of the rotor blade portion 12a and rotates integrally with the rotor blade portion 12a. Details regarding the lid 11 will be described later.
The moving blade portion 12 has a moving blade portion 12a, a moving blade boss portion 12b, and a holding plate portion 12c, and is provided in the water supply channel. That is, the moving blade portion 12 has a rotation center axis that is substantially parallel to the water supply flow path, and has a moving blade blade portion 12a provided in the water supply flow path so as to be rotatable around the rotation center axis. .

The moving blade portion 12a has a curved shape and is curved in such a direction that the tip approaches the center of the moving blade portion 12. Further, the number of the blade blade portions 12 a is a value different from an integer multiple of the number of the injection holes 19. For example, in the example illustrated in FIG. 2, the number of blade blades 12 a is 11 and the number of injection holes 19 is six. If the number of moving blade blades 12a is set to a value different from an integer multiple of the number of injection holes 19, the timing of collision between the water discharged from the injection holes 19 and the vicinity of the outer peripheral edge of each moving blade blade 12a is shifted. Therefore, the vibration and noise generation of the moving blade portion 12 can be suppressed.
In addition, a holding plate portion 12c that holds the moving blade blade portion 12a is provided at the downstream end of the moving blade blade portion 12a. In other words, the holding plate portion 12c is provided at the downstream end of the moving blade blade portion 12a and rotates integrally with the moving blade blade portion 12a. A space defined by the blade blade portion 12a and the holding plate portion 12c becomes the blade flow channel 12h.
In addition, a hole 12d is provided in the vicinity of the center of the holding plate 12c for flowing the water that has flowed through the moving blade channel 12h to the downstream side. That is, the hole 12d of the holding plate portion 12c is provided in the vicinity of the center of the holding plate portion 12c, and allows the water jetted toward the hole portion 12d of the holding plate portion and the blade blade portion 12a to flow downstream. The flow path (hole 12e) is in communication.

Thus, in order for the water jetted toward the moving blade blade portion 12a to flow downstream, it is necessary to provide the holding plate portion with a hole portion 12d that communicates with the flow path for flowing water downstream. .
In the present embodiment, a hole is provided near the center of the holding plate 12c. In this way, it is possible to lengthen the dimension between the time when the water jetted to the rotor blade 12a flows in and the time when it flows out. Therefore, power generation efficiency can be improved.
This also increases the pressure chamber 22 described later, so that the force 111 that cancels the thrust force 110 can be increased. Details regarding the pressure chamber 22 will be described later.
As a result, the power generation efficiency can be improved and the thrust force 110 can be further reduced.

  A moving blade boss portion 12b is provided on the downstream side of the moving blade portion 12a. A hole 12e penetrating in the axial direction is provided inside the rotor blade boss 12b, and one end of the hole 12e communicates with the hole 12d. The hole 12e serves as a flow path for flowing water flowing through the moving blade flow path 12h to the downstream side. An insertion portion 12f through which the shaft 13 is inserted is provided at the central portion of the moving blade boss portion 12b. And the holding | maintenance part 12g for making the insertion part 12f hold | maintain the axis | shaft 13 in the downstream edge part of the insertion part 12f is provided.

The shaft 13 has a columnar shape, and one end protrudes upstream from the moving blade blade 12a and the other end protrudes downstream from the moving blade boss 12b. One end on the upstream side of the shaft 13 is rotatably held by the housing boss portion 9a, and one end on the downstream side is rotatably held by the receiving portion 2e. The lid portion 11, the rotor blade portion 12, and the shaft 13 are integrated as a rotor 4, and the integrated rotor 4 rotates about the shaft 13.
A cylindrical magnet 5 is provided on the outer peripheral surface (end surface in the radial direction) of the moving blade boss portion 12b. The magnet 5 can rotate integrally with the moving blade portion 12. On the outer peripheral surface (end surface in the radial direction) of the magnet 5, N poles and S poles are alternately magnetized along the circumferential direction.

A stator 7 is provided outside the intermediate diameter portion 2 b of the cylindrical portion 2 so as to face the outer peripheral surface of the magnet 5.
FIG. 4 is a schematic view for illustrating a stator. 4A is a schematic cross-sectional view for illustrating a stator, and FIG. 4B is a schematic perspective view for illustrating a bobbin and a coil.
As shown in FIG. 4A, the stator 7 is provided with a bobbin 14, a coil 15, and a yoke 16. The stator 7 is disposed in the radial direction of the magnet 5 (the one illustrated in FIG. 4 is the radially outward direction). A plurality of stators 7 (two illustrated in FIG. 4) are provided so as to be laminated in the axial direction via the setting unit 17.

As shown in FIG. 4B, the bobbin 14 is provided with a bobbin boss portion 14a, a flange portion 14b, and a convex portion 14c.
The bobbin boss portion 14a has a cylindrical shape, and annular flange portions 14b are provided on both end faces thereof. The outer peripheral end of the flange portion 14b is provided so as to protrude in the radially outward direction of the bobbin boss portion 14a. And the coil 15 wound by the annular | circular shape is provided in the space between the collar parts 14b in the bobbin boss | hub part 14a radial direction. That is, a coil 15 is provided that generates an electromotive force by rotation of a magnet 5 formed by winding a conducting wire around a bobbin 14.
A protrusion 14c is provided on the flange 14b provided on the side where the stators 7 face each other. The convex portion 14 c has a columnar shape, and the stator 7 can be positioned in the circumferential direction by fitting the convex portion 14 c into the concave portion 17 a provided in the setting portion 17.

The yoke 16 is made of a magnetic material (for example, rolled steel). The yoke 16 is provided so as to surround the outer peripheral surface of the coil 15, the end surface of the flange portion 14b, and the inner peripheral surface of the bobbin boss portion 14a. Among these, the inner peripheral surface of the bobbin boss portion 14a, that is, the portion facing the inner peripheral surface of the coil 15 becomes so-called inductors 16a and 16b. Further, a portion provided surrounding the coil 15 is a base portion 16c.
The inductors 16a are arranged at equal intervals along the circumferential direction of the coil 15, and are arranged between the inductors 16b. That is, the inductors 16 a and the inductors 16 b are arranged alternately and spaced apart from each other along the circumferential direction of the coil 15. Therefore, the inductors 16a and 16b are disposed so as to face the outer peripheral surface (surface in the radially outward direction) of the magnet M. That is, there are provided a plurality of inductors 16a and 16b that exchange portions of magnets that are spaced apart from each other and have portions that oppose each other in the radial direction of the magnet 5.
Details regarding the setting unit 17 and the positional relationship between the end surface of the magnet 5 and the end surface of the yoke 16 (stator 7) will be described later.

  A stepped hole is provided inside the stator holding portion 8 so as to penetrate the axial direction. The medium diameter portion 2b can be inserted into a hole having a large diameter, and the small diameter portion 2c can be inserted into a hole having a small diameter. Further, a flange portion 8a is provided at an end portion on the side where a hole having a large diameter is provided. The small-diameter hole is provided with a female screw portion 8b and is screwed with a male screw portion 2f provided on the outer peripheral surface of the small-diameter portion 2c. Then, by screwing the male screw portion 2f and the female screw portion 8b, the stator 7 can be held so as to be sandwiched between the downstream end portion 2g of the large diameter portion 2a and the flange portion 8a. It has become.

Next, the lid 11 will be further illustrated.
5 and 6 are schematic perspective views for illustrating comparative examples. In addition, what was illustrated in FIG. 5, FIG. 6 added the examination in the process in which the present inventors came to make this invention.
As shown in FIG. 5, when the upstream end portion of the rotor blade portion 12 a is open, the water 50 ejected from the injection hole 19 collides with the rotor blade portion 12 a and then moves upstream. The flow direction is changed and the rotor blades 12a flow out. For this reason, since the amount of water flowing through the moving blade passage 12h is reduced, the power generation efficiency is lowered.
In this case, as shown in FIG. 6, if a plate-like lid portion 41 is provided at the upstream end portion of the moving blade blade portion 12 a, the water 50 ejected from the moving blade blade portion 12 a is upstream. It is possible to eliminate leakage. For this reason, the amount of water flowing through the rotor blade flow passage 12h can be increased, and the power generation efficiency can be improved.

Here, a rotational movement of the water flow occurs due to the rotation of the rotor 4 between the lid portion 41 and the second nozzle housing portion 9, but water is generated between the lid portion 41 and the second nozzle housing portion 9. The pressure starts to rise because it is difficult to flow out. Therefore, the pressure of water between the lid portion 41 and the second nozzle housing portion 9 increases, and a force that pushes the lid portion 41 downstream, that is, a thrust force 110 is generated. When the thrust force 110 is generated, the force acting between the upstream end portion of the receiving portion 2e and the downstream end portion of the holding portion 12g increases, so the upstream end portion of the receiving portion 2e and the downstream portion of the holding portion 12g. There is a possibility that the wear of the side end portion and the spacer 20 is increased. That is, there is a possibility that the wear of the bearing portion and the like is increased.
In this case, when the flow rate is small (for example, about 1.8 liters / minute), the generated thrust force 110 is reduced and wear is reduced. However, as the flow rate is increased, the generated thrust force 110 is increased and wear is reduced. May increase. In particular, in the case where the faucet hydroelectric generator 1 is provided in a faucet device having a water discharge flow rate of about 8 liters / minute or more, there is a risk that the wear will be severe.

For this reason, in the present embodiment, a thrust reduction unit for reducing the thrust force applied to the moving blade unit is provided.
Even when the lid portion is not provided as shown in FIG. 5, the thrust force 110 generated as the flow rate increases does not change. Therefore, it is possible to provide a thrust reduction unit for reducing the thrust force even when the lid is not provided.

  Examples of the thrust reduction portion include a hole penetrating the thickness direction of the lid portion, and a pressure chamber 22 provided on the downstream side of the holding plate portion 12c, that is, the downstream end of the holding plate portion 12c and the large diameter portion 2a. The positional relationship between the pressure chamber 22 provided between the inner wall surface of the part 2g and the end surface of the magnet 5 and the end surface of the yoke 16 (stator 7) can be exemplified.

Next, the thrust reduction unit is illustrated.
First, as a thrust reduction part, the hole part which penetrates the thickness direction of a cover part is illustrated.
FIG. 7 is a schematic perspective view for illustrating a hole portion as a thrust reduction portion.
If a hole penetrating in the thickness direction of the lid portion is provided, water between the lid portion and the second nozzle housing portion 9 can flow out through the hole portion. For this reason, since the increase in pressure between the lid portion and the second nozzle housing portion 9 is suppressed, the thrust force 110 generated by suppressing the increase in the water pressure in this portion can be reduced. Further, since the pressure receiving area can be reduced by providing the hole, the thrust force 110 can be reduced also in this respect.

For example, as shown to Fig.7 (a), the hole 21a can be provided in the plate-shaped cover part 21 provided in the edge part of the upstream of the moving blade blade | wing part 12a.
Moreover, as shown in FIG.7 (b), the some hole part 23a can be provided in the plate-shaped cover part 23 provided in the edge part of the upstream of the moving blade blade | wing part 12a. If a plurality of hole portions 23a are provided, the outflow amount of water flowing between the lid portion 23 and the second nozzle housing portion 9 can be increased and the pressure receiving area can be reduced. Therefore, the thrust force 110 can be further reduced. In addition, the number of the hole parts 23a is not necessarily limited to what was illustrated, and can be changed suitably.
In this case, if the hole 23a is disposed rotationally symmetrically with respect to the rotation center axis of the rotor blade 12, the load balance can be achieved. Therefore, the influence of the hole portion on the rotation can be suppressed, so that the rotating blade portion can be rotated smoothly. As a result, it is possible to reduce the thrust force while maintaining high power generation efficiency. As shown in FIG. 7B, the load balance can be more equalized if the holes 23a are arranged point-symmetrically with respect to the rotation center axis of the moving blade portion 12.

Moreover, as shown in FIG.7 (c), the hole 11a can be provided concentrically in the plate-shaped cover part 11 provided in the upstream edge part of the moving blade blade | wing part 12a. In this way, it is possible to further increase the amount of outflow of water flowing between the lid portion 11 and the second nozzle housing portion 9 and further reduce the pressure receiving area. Therefore, the thrust force 110 can be significantly reduced. Further, the load balance can be further equalized.
In this case, since the lid portion is provided only at a part of the upstream end portion of the rotor blade portion 12a, it is considered that the power generation efficiency is lowered. However, according to the knowledge obtained by the present inventors, if a cover is provided in the vicinity of the outer peripheral edge of the rotor blade blade 12a that contributes most to the conversion to rotational energy, the entire surface is covered as shown in FIG. The power generation efficiency can be improved to the same extent. That is, it is preferable that the lid portion is provided so as to cover at least the vicinity of the outer peripheral edge of the rotor blade portion 12a.
In FIG. 7B, the hole 23a is arranged rotationally symmetrically with respect to a point where the rotation center axis and the surface of the lid 23 intersect.
Here, “rotational symmetry” in the present invention includes not only what is illustrated in FIG. 7B but also what is illustrated in FIG. 7C. In other words, in the present invention, the hole 11a provided concentrically with the rotation center axis is also a hole provided "rotationally symmetric".

The lid portion is provided to suppress water escaping upstream from the rotor blade blade portion 12a. Here, when the hole is provided in order to reduce the thrust force 110, if the hole is provided at a position in the vicinity of the outer peripheral edge of the moving blade blade 12a where the water injected from the injection hole 19 performs the most work, There is a risk that power generation efficiency will be significantly reduced. Therefore, it is preferable to cover the vicinity of the outer peripheral edge of the moving blade blade 12a where the water injected from the injection hole 19 performs the most work with the lid.
In this way, high power generation efficiency can be obtained while maintaining the effect of reducing the thrust force 110.

Next, the positional relationship regarding the lid will be exemplified.
FIG. 8 is a schematic diagram for illustrating the peripheral position of the lid.
As shown in FIG. 8, it is preferable that the peripheral position of the lid portion 11 is located in the radially outward direction from the peripheral position of the blade blade 12a (the peripheral position of the holding plate 12c). In this case, the peripheral position of the lid portion 11 and the peripheral position of the rotor blade portion 12a (the peripheral position of the holding plate portion 12c) may be the same (the outer diameter is the same) (for example, FIG. 7C). See).
If it does in this way, the cover part 11 can be reliably provided in the outer periphery vicinity of the moving blade blade | wing part 12a which contributes most to the conversion to rotational energy. Therefore, the thrust force 110 can be reduced and the power generation efficiency can be improved.

FIG. 9 is a schematic diagram for illustrating the relationship between the injection hole and the lid. 9A shows the case where the hole 11a is provided concentrically in the lid 11, and FIG. 9B shows the case where the hole 23a is provided rotationally symmetrically with respect to the rotation center axis of the rotor blade 12. It is.
FIG. 10 is also a schematic diagram for illustrating the relationship between the injection hole and the lid. In addition, FIG. 10 is a case where the cover part which has the rib mentioned later is provided (refer Fig.17 (a)).
As shown in FIGS. 9 (a), (b), and FIG. 10, the region 19a formed by extending the water immediately after being ejected from the ejection hole 19 in its traveling direction has a lid (illustrated in the figure). It is preferable that the lids 11 and 23 and the peripheral edge 24a) are provided. For example, a lid can be provided in a region formed by extending the width of the outlet portion of the injection hole 19.
In this case, the region 19a formed by extending the water immediately after being ejected from the injection hole 19 in the traveling direction has a hole (in the illustrated example, the holes 11a, 23a, and 26d). It can be said that it is preferable not to be provided. For example, it is possible to prevent a hole from being provided in a region formed by extending the width of the outlet portion of the injection hole 19.

That is, the lid covers the region 19a formed by extending the water immediately after being ejected from the ejection hole 19 in the traveling direction, and the hole is formed on the rotation center axis side (diameter inside) of the region 19a. Is preferably arranged.
The water jetted from the jet hole works most immediately after flowing into the rotor blade blade 12a. That is, it is the vicinity of the outer peripheral edge of the moving blade blade 12a that contributes most to the conversion from hydraulic energy to rotational energy. Therefore, a cover is provided so as to cover at least the vicinity of the outer peripheral edge of the moving blade blade 12a into which water flows (region 19a formed by extending the water immediately after being ejected from the ejection hole 19 in the traveling direction). By doing so, power generation efficiency can be improved. And since it becomes possible to provide a large hole in a relatively wide area on the rotation center axis side (diameter inside) from the vicinity of the outer peripheral edge of the moving blade blade 12a, the effect of reducing the thrust force can be improved. . That is, it is possible to maximize the effect of reducing the thrust force while maintaining high power generation efficiency.

In addition, the injection hole 19 is formed so that the region 19a formed by extending the water immediately after being injected from the injection hole 19 in the traveling direction can be injected so as to be covered by the lid portion. It can be said that it is preferable.
The region 19 a formed by extending the water immediately after being ejected from the injection hole 19 in the traveling direction can be changed depending on the shape dimension of the injection hole 19.
Therefore, it is preferable to form the injection hole 19 that can perform the injection so that the region 19a formed by extending the water immediately after being injected from the injection hole 19 in the traveling direction is covered with the lid.
If it does in this way, it can prevent effectively that the inflowed water flows out from the moving blade blade | wing part 12a to an upstream side. As a result, high power generation efficiency can be obtained while maintaining the thrust force reduction effect.

Moreover, it is preferable that the line which extended the rotation center axis | shaft side (diameter inside) of the exit part of the injection hole 19 should be located in the diameter outer side rather than the outermost periphery position of the hole provided in the cover part. The “outermost peripheral position of the hole” will be described later. That is, the line extending the rotation center axis side of the outlet portion of the injection hole 19 is centered on the rotation center axis, and the position of the rotation center axis farthest from the rotation center axis among the peripheral edges of the hole provided in the lid portion. It is preferable to be located outside the region having the radius of the line segment connecting the two.
If the line extending the rotation center axis side (diameter inner side) of the outlet portion of the injection hole 19 is positioned on the outer diameter side of the outermost peripheral position of the hole provided in the lid portion, the inflowed water moves. Outflow from the blade blade 12a to the upstream side can be effectively prevented. As a result, high power generation efficiency can be obtained while maintaining the thrust force reduction effect.

  If it does in this way, a cover part can be reliably provided in the outer periphery vicinity of the moving blade blade | wing part 12a which contributes most to conversion to rotational energy. Therefore, the thrust force 110 can be reduced and the power generation efficiency can be improved.

FIG. 11 is a schematic diagram for illustrating the relationship between the shape of the rotor blade blade and the lid.
Depending on the shape of the rotor blade portion 12a, there may be an inflection point 12a1. The inflection point here refers to the point at which the curvature of the blade blade changes.
The inflowing water collides with the rotor blade blade 12a most strongly at the inflection point 12a1, so that the water stagnates at the inflection point 12a1 and a vortex may occur. That is, in the vicinity of the inflection point 12a1, the water flow may be disturbed and vortices may be generated. Further, if there is a lid at the portion where the vortex or the like is generated, the thrust force may increase.
Therefore, as shown in FIG. 11, it is preferable not to provide the lid portion (peripheral portion 24a in the example illustrated in the drawing) in the portion where the inflection point 12a1 of the moving blade portion 12a exists. . That is, it is preferable that the lid portion is provided so as to cover the outside of the diameter from the inflection point of the moving blade portion 12a.
In this way, it is possible to prevent the portion where the inflection point 12a1 is present from being covered, and to cover the outer peripheral edge side of the moving blade blade 12a as much as possible, that is, outside the inflection point 12a1. As a result, it is possible to suppress an increase in thrust force due to stagnation or vortices. Moreover, high power generation efficiency can be obtained by covering the outer peripheral edge side of the moving blade blade 12a.

  Here, if a cover part is provided, it can prevent that the water which collided with the moving blade blade | wing part 12a escapes to an upstream. However, a new problem arises that water escapes downstream in a portion where the bottom surface of the rotor blade flow passage 12h is not present in relation to the lid. Therefore, it is preferable that the relationship between the lid and the bottom surface of the blade flow path is as follows.

  12 and 13 are schematic views for illustrating the relationship between the lid and the bottom surface of the rotor blade flow path. FIG. 12 shows a case where the bottom surface of the rotor blade flow path 12 h is the holding plate portion 12 c of the rotor blade portion 12. FIG. 13 shows the case where the bottom surface of the rotor blade flow path 12 h is the upstream end surface of the magnet 5.

As shown in FIG. 12, it is preferable that the bottom surface of the blade flow path 12h, that is, the holding plate portion 12c is provided in a portion facing the lid portion 11 provided in the vicinity of the outer peripheral edge of the blade blade 12a. . That is, it is preferable that the holding plate portion 12 c be provided at least in a portion facing the lid portion 11.
If the cover part 11 is provided, it can prevent that the water which collided with the moving blade blade | wing part 12a escapes to an upstream. However, water escapes downstream in a portion where the bottom surface of the moving blade channel 12h is not present in relation to the lid portion 11.
For this reason, if the holding plate 12c serving as the bottom surface of the rotor blade flow path 12h is provided at least in a portion facing the lid 11, water can be prevented from escaping downstream. In particular, water can be prevented from escaping upstream and downstream in the vicinity of the outer peripheral edge of the moving blade blade 12a that contributes most to the conversion to rotational energy. Therefore, high power generation efficiency can be obtained while maintaining the reduction effect of the thrust force.

Similarly, in the case shown in FIG. 13, the bottom surface of the blade flow path 12 h, that is, the upstream end surface of the magnet 5 is located at the portion facing the lid portion 11 provided near the outer peripheral edge of the blade blade 12 a. It is preferable to do.
If it does in this way, it can control that water escapes to the downstream side. In particular, it is possible to prevent water from escaping upstream and downstream in the vicinity of the outer peripheral edge of the moving blade blade 12a that contributes most to the conversion to rotational energy. Therefore, power generation efficiency can be improved.
In addition, although the case of the cover part 11 was shown as an example, the periphery vicinity, such as the cover parts 21 and 23, is also the same.

14 and 15 are also schematic views for illustrating the relationship between the lid and the bottom surface of the rotor blade flow path. 14 and 15, (a) is a schematic cross-sectional view, and (b) is a schematic plan view of a lid.
FIGS. 14 and 15 show the case where the bottom surface of the moving blade channel 12h is the holding plate portion 12c of the moving blade portion 12, and the relationship between the hole portion of the lid portion and the hole portion 12d of the holding plate portion 12c. This is just an example. Here, the dimension from the center of the shaft 13 to the outermost peripheral position of the hole portion of the lid portion is L1, and the dimension from the center of the shaft 13 to the peripheral edge of the hole portion 12d of the holding plate portion 12c is L2.
In this case, it is preferable that L1> L2 as shown in FIGS. That is, the dimension from the center of the rotor blade blade 12a to the outermost peripheral position of the hole provided in the lid is the dimension from the center of the rotor blade 12a to the periphery of the hole provided in the holding plate 12c. It is preferable to make it longer.
If the range covered by the lid is increased, the thrust force may increase. On the other hand, if the range covered by the lid and the holding plate is made too small, water escapes upstream and downstream.
For this reason, in the present embodiment, the dimensional relationship of each hole is defined so that the range covered by the lid is smaller than the range covered by the holding plate.
In this way, the thrust force can be reduced by reducing the range covered by the lid, and the power generation efficiency can be improved by relatively increasing the range covered by the holding plate.

In addition, the outermost peripheral position of the hole part of a cover part is a peripheral position of the hole part 11a in the case of the hole part 11a of the cover part 11 illustrated in FIG. Further, in the case of the hole 23 a of the lid 23 illustrated in FIG. 15, it is the peripheral edge of the hole 23 a and the most distant from the center of the shaft 13.
In addition, the case where the bottom surface of the moving blade flow path 12h is the holding plate portion 12c of the moving blade section 12 is illustrated, but the bottom surface of the moving blade flow path 12h illustrated in FIG. The same can be applied in some cases.

Here, in the case of a thing like the cover part 11 provided in the outer periphery vicinity of the moving blade blade | wing part 12a, it is necessary to align with the axis | shaft 13 at the time of attachment. Further, as described above, the lid portion receives a thrust force, but also receives a force from a direction intersecting the direction of the thrust force due to water pressure or rotation. Therefore, if the hole of the lid is large, the lid may be deformed in the radial direction.
FIG. 16 is a schematic diagram for illustrating a peripheral portion, a shaft holding portion, and a lid portion having a rib.
As shown in FIG. 16 (a), the lid portion 24 is provided with an annular peripheral portion 24a, a cylindrical shaft holding portion 24b, and a rib 24c for connecting the peripheral portion 24a and the shaft holding portion 24b. That is, the lid portion 24 includes an annular peripheral portion 24a provided in the vicinity of the outer peripheral edge of the moving blade blade portion 12a, a shaft holding portion 24b provided on the rotation center axis of the moving blade blade portion 12a, and a peripheral portion 24a. And a rib 24c that connects the shaft holding portion 24b. In this case, a portion where the rib 24c is not provided between the peripheral edge portion 24a and the shaft holding portion 24b is the hole portion 24d.
The annular peripheral edge 24a can be the same as the lid 11 described above.
A hole penetrating in the axial direction is provided at the center of the cylindrical shaft holding portion 24b, and the shaft 13 can be inserted and held in this hole.

The rib 24c is integrated by connecting the peripheral edge portion 24a and the shaft holding portion 24b.
Here, if the lid portion is only the annular peripheral edge portion 24a provided in the vicinity of the outer peripheral edge of the moving blade blade portion 12a, it is necessary to perform alignment with the moving blade blade portion 12a at the time of attachment. Therefore, the workability of the attachment work may be deteriorated.
In the present embodiment, the peripheral edge portion 24a and the shaft holding portion 24b provided on the rotation center shaft of the rotor blade blade portion 12a are connected by the rib 24c. Therefore, by inserting the shaft 13 through the shaft holding portion 24b, the annular peripheral portion 24a and the rotor blade portion 12a can be easily aligned.
Further, since the peripheral edge portion 24a and the shaft holding portion 24b are integrated, the deformation of the lid portion 24 can be reduced.
In this case, the pressure receiving area is increased by providing the rib 24c. However, a part of the rib 24c and a part of the upstream end face of the moving blade blade 12a overlap each other when viewed from the axial direction of the moving blade blade 12a (the direction in which the thrust force acts). That is, the rib 24c is formed so that at least a part of the rib 24c and a part of the moving blade blade 12a overlap each other when viewed from the axial direction of the moving blade blade 12a. Since the pressure receiving area or the like does not increase in a portion where a part of the rib 24c and a part of the moving blade blade 12a overlap, it is possible to suppress the deterioration of the reduction effect of the thrust force 110. As a result, the mounting workability of the lid 24 can be improved while maintaining the effect of reducing the thrust force 110.

As shown in FIG. 16B, the lid portion 25 is provided with an annular peripheral edge portion 24a, a columnar shaft holding portion 24b, and a rib 25c that connects the peripheral edge portion 24a and the shaft holding portion 24b. In this case, a portion where the rib 25c is not provided between the peripheral edge portion 24a and the shaft holding portion 24b becomes the hole portion 25d.
The rib 25c is integrated by connecting the peripheral edge portion 24a and the shaft holding portion 24b. Further, the rib 25c has a shape such that the rib 25c and the upstream end surface of the blade blade 12a overlap each other when viewed from the axial direction of the blade blade 12a (the direction in which the thrust force acts). In this case, the shape may be such that the rib 25c and the end face on the upstream side of the rotor blade blade portion 12a completely overlap, or the shape may be smaller than the end face on the upstream side of the rotor blade blade portion 12a. May be. For example, the shape may be such that a part of the upstream end face of the moving blade blade 12a can be seen under the rib 25c when viewed from the axial direction of the moving blade blade 12a (direction of thrust force action). That is, the rib 25c has the same shape of the rib 25c and the moving blade blade 12a as seen from the axial direction of the moving blade 12a or the rib 25c is smaller than the moving blade 12a.
According to the present embodiment, since the rib 25c does not protrude from the moving blade blade 12a when viewed from the axial direction of the moving blade 12a, the pressure receiving area and the like may increase by providing the rib 25c. Absent. Therefore, the effect of reducing the thrust force 110 can be further maintained and the workability of attaching the lid portion 25 can be improved.
In addition, deformation of the lid portion 25 can be reduced.
Here, in order to reduce the thrust force 110, it is preferable to make the lid portion small. However, the lid portion receives the thrust force 110, but also receives a force from a direction intersecting the direction of the thrust force 110 by water pressure or rotation. Therefore, depending on the size of the lid, the lid may be deformed in the radial direction or the like by a force from a direction intersecting the direction of the thrust force 110.

In this case, the deformation of the lid can be reduced by providing a rib, but if only one rib is provided as shown in FIG. 16B, it can counteract forces acting from various directions. I can't. Further, even if two ribs are provided as shown in FIG. 16 (a), the force from the direction intersecting the direction in which the ribs are provided cannot be countered. If the number of ribs to be provided is increased, the pressure receiving area may be increased, or the amount of water flowing out through the hole may be reduced, thereby increasing the thrust force.
According to the knowledge obtained by the present inventors, it is preferable to provide the three ribs so as to be rotationally symmetric with respect to the rotation center axis.

FIG. 17 is a schematic diagram for illustrating a case where three ribs are provided so as to be rotationally symmetric.
FIG. 17A shows a case where the rib of the lid portion 24 illustrated in FIG.
As shown in FIG. 17A, the lid portion 26 is provided with an annular peripheral portion 24a, a columnar shaft holding portion 24b, and a rib 24c that connects the peripheral portion 24a and the shaft holding portion 24b. In this case, three ribs 24c are provided so as to be rotationally symmetric with respect to the rotation center axis. That is, a rib 24c is provided every 120 °. A portion where the rib 24c is not provided between the peripheral edge portion 24a and the shaft holding portion 24b is a hole portion 26d.
FIG. 17B shows a case where the number of ribs of the lid portion 25 illustrated in FIG. 16B is three.
As shown in FIG. 17B, the lid portion 27 is provided with an annular peripheral portion 24a, a cylindrical shaft holding portion 24b, and a rib 25c that connects the peripheral portion 24a and the shaft holding portion 24b. In this case, three ribs 25c are provided so as to be rotationally symmetric with respect to the rotation center axis. That is, a rib 25c is provided every 120 °. A portion where the rib 25c is not provided between the peripheral edge portion 24a and the shaft holding portion 24b is a hole portion 27d.
17 (a) and 17 (b) show a case where the rotor blade blade 12a and the rotor blade boss are connected via the holding plate 12c.
On the other hand, what is shown in FIG. 17 (c) is a case where the moving blade blade 12a and the moving blade boss are not connected. In this case, the blade blade 12a is connected by the holding plate 12c1.

In this way, if the three ribs are provided so as to be rotationally symmetric with respect to the rotation center axis, center alignment can be easily performed and forces from various directions can be countered. Moreover, while satisfying these, the increase in pressure receiving area can be minimized. Moreover, a load balance can be achieved by providing the ribs so as to be rotationally symmetric with respect to the rotation center axis. Therefore, since the influence of the rib with respect to rotation can be suppressed, rotation of a moving blade part can be made smooth.
As a result, it is possible to improve the mounting workability, improve the proof strength against forces from various directions, increase the power generation efficiency, and reduce the thrust force.

Next, the pressure chamber 22 provided between the holding plate part 12c and the inner wall surface of the downstream end part 2g of the large diameter part 2a is illustrated as a thrust reduction part.
FIG. 18 is a schematic diagram for illustrating a pressure chamber as a thrust reduction unit.
As shown in FIG. 18, the rotor blade 12 a is provided so as to protrude in the radially outward direction of the magnet 5. A holding plate portion 12 c is provided at a portion protruding from the magnet 5. Further, the portion facing the holding plate portion 12c is an inner wall surface 2h of the downstream end portion 2g of the large diameter portion 2a. The holding plate portion 12c and the inner wall surface 2h are provided apart from each other, and a gap formed between the holding plate portion 12c and the inner wall surface 2h becomes the pressure chamber 22.
In this case, the height dimension of the pressure chamber 22 (the gap dimension formed between the holding plate portion 12c and the inner wall surface 2h) is the height dimension of the main flow path (the blade flow path 12h). It is set to be smaller than the dimension between the upstream end and the downstream end.
That is, the dimension (height dimension) in the axial direction of the rotor blade part 12a of the pressure chamber 22 is larger than the dimension (height dimension) in the axial direction of the rotor blade part 12a in the space between the rotor blade parts 12a. Is also set to be shorter.
The dimension in the axial direction of the moving blade blade part 12a of the pressure chamber 22 provided on the downstream side of the holding plate part 12c is larger than the dimension in the axial direction of the moving blade blade part 12a in the space between the moving blade blade parts 12a. I try to shorten it. That is, the height dimension of the pressure chamber 22 is made shorter than the height dimension of the main flow path (the blade flow path 12h). Therefore, the flow rate of the water 51 flowing through the pressure chamber 22 is smaller than that of the water 50 flowing through the main flow path (the rotor blade flow path 12h), and the pressure in the pressure chamber 22 is less likely to be discharged. As a result, a force 111 that pushes the holding plate portion 12c upstream is generated. The direction of the force 111 pushing the holding plate portion 12c upstream is opposite to that of the thrust force 110, so that the thrust force 110 is offset.
In this case, if the pressure chamber 22 is provided together with other thrust reducing portions (for example, a hole provided in the lid portion), the effect of reducing the thrust force 110 can be synergistically improved.

Next, the positional relationship between the end surface of the magnet 5 and the end surface of the yoke 16 is illustrated as a thrust reduction part.
FIG. 19 is a schematic diagram for illustrating the “positional relationship between the end surface of the magnet and the end surface of the yoke” as the thrust reduction unit. In addition, what was illustrated in FIG. 19 is a case where one stator 7 is provided.
As described above, the stator 7 is provided with the bobbin 14, the coil 15, and the yoke 16. The yoke 16 is made of a magnetic material (for example, rolled steel). The yoke 16 is provided so as to surround the outer peripheral surface of the coil 15, the end surface of the flange portion 14b, and the inner peripheral surface of the bobbin boss portion 14a.
The stator 7 (yoke 16) is disposed in the radial direction of the magnet 5.

  In the present embodiment, the end surface 5 a of the magnet 5 on the action direction side of the thrust force 110 is protruded from the end surface 16 d of the yoke 16. That is, the first end surface 5a of the magnet 5 on the acting direction side of the thrust force 110 is protruded from the first end surface 16d of the yoke on the acting direction side of the thrust force 110. Therefore, a pulling force 112 is generated between the portion from which the magnet 5 is protruded and the yoke 16 formed of a magnetic material. Since the force 112 includes a force having a component opposite to the direction of the thrust force 110, the thrust force 110 is canceled out. Therefore, the thrust force 110 can be reduced.

FIG. 20 is also a schematic diagram for illustrating the “positional relationship between the end surface of the magnet and the end surface of the yoke” as the thrust reduction unit. In addition, what was illustrated in FIG. 20 is a case where the two stators 7 are provided. Further, this is a case where the holding portion 28 that supports the thrust force 110 is provided on the upstream side (on the opposite side to the direction in which the thrust force 110 acts).
Also in the present embodiment, the end surface 5a of the magnet 5 on the acting direction side of the thrust force 110 is protruded from the end surface 16d of the yoke 16. Therefore, the attractive force 112 can be generated between the portion from which the magnet 5 is protruded and the yoke 16 formed of a magnetic material. As a result, the thrust force 110 can be canceled in the same manner as described above, so that the thrust force 110 can be reduced.

FIG. 21 is also a schematic diagram for illustrating the “positional relationship between the end surface of the magnet and the end surface of the yoke” as the thrust reduction portion. The faucet hydroelectric generator 1 illustrated in FIG. 1 is provided so that the rotation center axis of the moving blade portion 12 is substantially parallel to the water supply flow path, but the water illustrated in FIG. The plug hydroelectric generator 1a is provided so that the rotation center axis of the rotor blade portion 29 is substantially perpendicular to the water supply flow path.
Also in the present embodiment, the end surface 5a of the magnet 5 on the acting direction side of the thrust force 110 is protruded from the end surface 16d of the yoke 16. Therefore, the attractive force 112 can be generated between the portion from which the magnet 5 is protruded and the yoke 16 formed of a magnetic material. As a result, the thrust force 110 can be canceled in the same manner as described above, so that the thrust force 110 can be reduced.

FIG. 22 is a schematic diagram for illustrating the positional relationship between the end surface of the magnet and the end surface of the yoke.
When the moving blade portion 12 is vibrated by the water flow, the magnet 5 provided integrally with the moving blade portion 12 is also vibrated, so that the magnetic flux of the magnet 5 is not sufficiently transmitted to the yoke 16 (hereinafter simply referred to as magnetic flux leakage). May generate power generation efficiency and output non-uniformity. Therefore, it is preferable that both end surfaces of the magnet 5 protrude from both end surfaces of the yoke 16 so that the magnetic flux does not leak even when the magnet 5 vibrates. In this way, highly efficient and uniform power generation can be realized.

  However, when the end surface 5b of the magnet 5 on the side opposite to the direction in which the thrust force 110 acts is protruded from the end surface 16e of the yoke 16, a force 113 that attracts between the protruding portion of the magnet 5 and the yoke 16 is generated. It will be. Since the force 113 includes a force having a component in the same direction as the direction of the thrust force 110, the thrust force 110 increases.

  For this reason, in the present embodiment, the end surface 5a of the magnet 5 on the side of the thrust force 110 is protruded from the dimension L4 from which the end surface 5b of the magnet 5 on the side opposite to the direction of the thrust force 110 protrudes. The dimension L3 to be made is longer. That is, the second end surface 5 b facing the first end surface 5 a of the magnet 5 protrudes from the second end surface 16 e facing the first end surface 16 a of the yoke 16, and the first end surface 5 a of the magnet 5 is The dimension L3 protruding from the first end face 16d of the yoke 16 is longer than the dimension L4 protruding from the second end face 16e of the yoke 16 at the second end face 5b of the magnet 5. In this way, magnetic flux leakage can be prevented while having the effect of reducing the thrust force 110.

  In this case, the dimension in which the end face of the magnet protrudes from the end face of the yoke can be the “maximum dimension”. Here, the “maximum dimension” means the dimension up to the top of the convex part of the magnet end face when the end face of the magnet is uneven, and when the magnet end face is flat, the magnet is as described above. The dimension up to the end face (flat surface).

FIG. 23 is a schematic diagram for illustrating a case where a plurality of stators are provided.
In the case shown in FIG. 23, the end surface 5 b of the magnet 5 on the side opposite to the direction in which the thrust force 110 acts is prevented from projecting from the end surface 16 e of the yoke 16. That is, a plurality of stators 7 are provided so as to be stacked in the direction in which the thrust force 110 is applied, and the second end surface 5b of the magnet 5 is the first of the yoke 16 provided on the side opposite to the direction in which the thrust force 110 is applied. 2 end faces 16e are provided so as to be flush with each other or on the side of the acting direction of the thrust force 110.
In this way, since the force 113 described above is not generated, the effect of reducing the thrust force 110 by the force 112 can be enjoyed as it is. However, on the other hand, the above-described magnetic flux leakage may occur, resulting in a decrease in power generation efficiency and nonuniform output.

  Therefore, in the present embodiment, the influence of magnetic flux leakage is suppressed by providing a plurality of stators 7 so as to be stacked. That is, if a plurality of stators 7 are provided, the stators 7 that are affected by magnetic flux leakage can be limited. For example, the stator 7 on the side opposite to the acting direction of the thrust force 110 is affected by magnetic flux leakage, but the other stators 7 connected thereto are not affected by magnetic flux leakage. For this reason, it is possible to suppress a decrease in power generation efficiency and uneven output of the plurality of stators 7 provided as a whole. As a result, it is possible to suppress the influence of magnetic flux leakage while having the effect of reducing the thrust force 110.

  Further, as illustrated in FIG. 22, FIG. 23, FIG. 1 and the like, the stator 7 is disposed in the radially outward direction of the magnet 5. If the stator 7 is arranged in the radially outward direction of the magnet 5, the outer peripheral surface side of the magnet 5 having a large surface area can be opposed to the stator 7. Therefore, since the amount of magnetic flux can be increased, the amount of power generation can be increased. In addition, since the attractive force increases and the above-described force 112 increases, the effect of reducing the thrust force 110 can be improved. Further, the size and weight of the magnet 5 necessary for obtaining the same power generation capacity can be reduced. Therefore, it is possible to reduce the thrust force from the viewpoint of reducing the weight of the magnet 5.

As described above, as the thrust reduction portion, “a hole passing through the thickness direction of the lid”, “a pressure chamber 22 provided between the holding plate portion 12c and the inner wall surface of the downstream end 2g of the large diameter portion 2a”. “The positional relationship between the end face of the magnet 5 and the end face of the yoke 16 (stator 7)” is exemplified.
These thrust reduction units can be appropriately selected and used, or can be used in combination.
In this case, “the pressure chamber 22 provided between the holding plate portion 12c and the inner wall surface of the downstream end portion 2g of the large diameter portion 2a”, “the end surface of the magnet 5 and the end surface of the yoke 16 (stator 7)” Can be applied to a faucet hydroelectric generator that is not provided with a lid.
Moreover, in the faucet hydroelectric generator provided with the cover part, three types of thrust reduction parts can be appropriately selected and used in combination. However, in a faucet hydroelectric generator provided with a lid, it is preferable to provide at least “a hole penetrating in the thickness direction of the lid”.

Next, the sealing part 6 and the nozzle part 3 will be further illustrated.
If the injection hole 19 can be accurately formed, the performance of the faucet hydroelectric generator 1 can be improved. In this case, if the nozzle part having the injection hole 19 is integrally formed, the injection hole 19 can be formed with high accuracy.
However, in the case of the nozzle portion 3 or the like, since the injection hole 19 is provided on the side surface of the nozzle portion 3, it is difficult to perform die cutting or molding. In this case, the nozzle part 3 can be divided into two parts, and the nozzle part having the injection holes 19 can be formed by assembling the divided elements.

  However, if the divided elements are simply assembled, the opening area of the injection hole 19 may change after or during the assembly. For example, after assembling, there is a possibility that an element divided by water pressure or the like will wobble and the opening area of the injection hole 19 may change. In this case, a plurality of positions on the periphery of the divided elements may be fixed with an adhesive or the like. However, in this case, the opening area of the injection hole 19 may be changed by the protruding adhesive. And if the opening area of the injection hole 19 changes, appropriate ejection cannot be performed, and power generation efficiency and the like may be reduced.

Therefore, in the present embodiment, the nozzle portion 3 is divided into the second nozzle housing portion 9 and the first nozzle housing portion 10, and the second nozzle housing portion 9 is separated by the sealing portion 6. The position of the first nozzle housing 10 in the axial direction is restricted.
FIG. 24 is a schematic diagram for illustrating a state in which the first nozzle housing part and the second nozzle housing part are fixed (contacted). FIG. 24A is a schematic cross-sectional view for illustrating a state in which the first nozzle housing portion and the second nozzle housing portion are fixed (contacted), and FIG. A schematic exploded view of the nozzle housing part, the second nozzle housing part, and the sealing part, FIG. 24C illustrates a state in which the second nozzle housing part is fitted into the first nozzle housing part. It is a model enlarged view for.
As shown in FIG. 24B, a plurality of nozzle grooves 10 a penetrating the stepped holes 10 b are provided on the peripheral surface of the first nozzle housing portion 10. Further, the second nozzle housing part 9 is fitted into the stepped hole 10b. When the second nozzle housing part 9 is fitted into the stepped hole 10b of the first nozzle housing part 10, the injection hole 19 is formed by the second nozzle housing part 9 and the nozzle groove 10a. It is supposed to be formed.

Further, as shown in FIG. 24A, a male screw portion 6 a is provided on the side surface of the sealing portion 6. And the sealing part 6 is fixed to the opening of the upstream end of the large diameter part 2a by screwing the female screw part 2d provided in the vicinity of the opening of the upstream end of the large diameter part 2a and the male screw part 6a. Be able to.
In addition, a plurality of contact portions 9 b that protrude toward the upstream side are provided on the peripheral edge portion of the second nozzle housing portion 9. The upstream end surface of the contact portion 9 b is in contact with the sealing portion 6. When the sealing portion 6 is fixed to the opening at the upstream end of the large-diameter portion 2a, the position of the contact portion 9b in the axial direction is restricted by the sealing portion 6, and the second nozzle housing portion 9 And the first nozzle housing part 10 are fixed inside the large diameter part 2a.
Further, as shown in FIG. 24C, when the first nozzle housing part 10 is fixed inside the large diameter part 2a, the peripheral surface and the large diameter part of the first nozzle housing part 10 are used. The inner wall surface of 2a abuts. Further, when the second nozzle housing part 9 is fitted into the stepped hole 10b of the first nozzle housing part 10, the end of the second nozzle housing part 9 and the stepped hole 10b are stepped. The attached part comes into contact. In this case, it is preferable that the guiding portion 9c provided at the peripheral edge of the second nozzle housing portion 9 is in contact with the corner portion 10c of the stepped portion of the stepped hole 10b.

That is, the nozzle part 3 is provided with a stepped hole 10b opened in the end face on the sealing part 6 side in the center part and a plurality of nozzle grooves 10a opened in the end face on the sealing part 6 side in the peripheral part. The first nozzle housing part 10 and the abutting part 9b protruding toward the sealing part 6 are provided at the peripheral part so as to close the opening of the stepped hole 10b of the first nozzle housing part 10. And a second nozzle housing part 9. The injection hole 19 is formed by the nozzle groove 10a of the first nozzle housing part 10 and the second nozzle housing part 9, and the second nozzle housing part 9 passes through the contact part 9b. The first nozzle housing part 10 is in contact with the sealing part 6. Note that the contact portion 9 b may be provided in the second nozzle housing portion 9 or may be provided in the sealing portion 6.
Further, the first nozzle housing part 10 has a surface that comes into contact with the inner wall surface of the cylindrical part 2. And the 2nd nozzle housing | casing part 9 has the guide part 9c in the edge part periphery of the 1st nozzle housing | casing part 10 side, and the 2nd nozzle housing | casing part 9 is a 1st nozzle housing | casing part. When inserted into the ten stepped holes 10b, the guiding portion 9c and the corner portion 10c of the bottomed hole come into contact with each other.

According to the present embodiment, since the nozzle part 3 is divided into the second nozzle housing part 9 and the first nozzle housing part 10, it is possible to facilitate die cutting and molding.
Further, by inserting the second nozzle casing 9 into the stepped hole 10b of the first nozzle casing 10, an injection hole 19 is formed by the second nozzle casing 9 and the nozzle groove 10a. It has become so. Therefore, the injection hole 19 can be formed with high accuracy.
Further, the second nozzle housing 9 is brought into contact with the first nozzle housing 10 through the contact portion 9 b by the sealing portion 6. Therefore, since no adhesive is used, there is no possibility that the opening area of the injection hole 19 changes.
Further, since the second nozzle housing 9 and the first nozzle housing 10 are brought into contact with each other, the second nozzle housing 9 and the first nozzle housing 10 are deformed by water pressure or the like. There is no fear. Therefore, there is no possibility that the opening area of the injection hole 19 changes during power generation, and stable power generation can be performed.
When water pressure is applied by the water flow, the sealing portion 6 is lifted and the contact portion 9b that is in contact with the sealing portion 6 is separated. In this case, the second nozzle housing portion 9 is moved by the water pressure. Since it is pressed against one nozzle housing part 10, a change in the opening area of the injection hole 19 can be suppressed.
In addition, since the second nozzle casing 9 is fitted into the stepped hole 10b of the first nozzle casing 10, the second nozzle casing 9 and the first nozzle casing The displacement in the radial direction with respect to 10 can be suppressed. Moreover, it can suppress that the opening area of the injection hole 19 varies by the position shift of the radial direction of the 2nd nozzle housing | casing part 9 and the 1st nozzle housing | casing part 10. FIG. In addition, since the guide portion 9 c is provided at the peripheral edge of the end of the second nozzle housing portion 9, when the second nozzle housing portion 9 is fitted into the stepped hole 10 b of the first nozzle housing portion 10. The workability can be improved. Further, the peripheral surface of the first nozzle housing 10 and the inner wall surface of the large diameter portion 2a are in contact, and the end of the second nozzle housing 9 and the stepped portion of the stepped hole 10b are in contact. It is like that. Therefore, it can suppress that water leaks from these parts.
Further, when an R shape is provided as the guiding portion 9c at the edge of the end of the second nozzle casing 9, water flowing from a direction parallel to the rotation center axis is substantially perpendicular to the rotation center axis. In the plane, when the direction is changed so as to be ejected from the radially outward direction of the moving blade blade portion 12a toward the moving blade blade portion 12a, it is possible to suppress the occurrence of water flow separation and to suppress pressure loss.

Next, the setting unit 17 will be further illustrated.
As illustrated in FIGS. 1 and 4, when a plurality of stators 7 are provided so as to be stacked, positioning accuracy in the circumferential direction between the stators 7 and dimensional accuracy between the stators 7 are important. For example, cogging occurs if the circumferential positions, that is, the phases of the stators 7 are the same. Therefore, it is necessary to dispose the circumferential positions of the stator 7 so as to be shifted from each other. Further, if the stators 7 are too close to each other, magnetic mutual interference may occur. Therefore, it is necessary to arrange the stators 7 apart from each other.

In this case, a positioning pin is provided on the end face of one stator 7 and a positioning hole is provided on the end face of the other stator 7 so that the circumferential position between the stators 7 and the axial position between the stators 7 (between the stators 7). Dimension) can be set.
However, if the circumferential positioning between the stators 7 and the axial positioning between the stators 7 are performed in this way, the subsequent adjustment cannot be performed.

Therefore, in the present embodiment, the setting unit 17 is provided between the stators 7.
FIG. 25 is a schematic diagram for illustrating the setting unit. 25A is a schematic plan view for illustrating the setting unit, and FIG. 25B is a schematic cross-sectional view for illustrating positioning by the setting unit.
As shown in FIG. 25A, the setting portion 17 has an annular shape, and a hole 17b is provided at the center thereof. Further, a concave portion 17a for fitting the convex portion 14c is provided on the circumference having a predetermined dimension from the center. Four recesses 17a are provided for one stator 7, and are arranged so as to be shifted from each other so that cogging does not occur. For example, the upstream stator 7 can be a recess 17a1, and the downstream stator 7 can be a recess 17a2. Moreover, the thickness dimension of the setting part 17 is set to such an extent that the magnetic mutual interference between the stators 7 can be suppressed.

As shown in FIG. 25B, a protrusion 14c is provided on the flange 14b provided on the side where the stators 7 face each other. The convex portion 14 c has a columnar shape, and the stator 7 can be positioned in the circumferential direction by fitting the convex portion 14 c into the concave portion 17 a provided in the setting portion 17. In addition, the stator 7 can be positioned in the axial direction through the setting portion 17.
In addition, although the recessed part 17a was provided in the setting part 17 and the convex part 14c was provided in the collar part 14b, you may make it provide a convex part in the setting part 17 and a recessed part in the collar part 14b. Moreover, although the convex part 14c was provided in the collar part 14b, you may make it provide in the yoke 16 grade | etc.,. That is, the convex portion or the concave portion may be provided on the end face of the stator 7 on the side where the stators face each other. Moreover, a recessed part can also be made into a through-hole and can also be made into a hole with a bottom.
In this way, a convex portion for positioning the stator 7 is provided on one of the end surface of the stator 7 on the side where the stators face each other and the setting portion 17, and the convex portion is provided on the other of the other. A recess for fitting is provided.

According to the present embodiment, it is possible to set the circumferential position and the axial position of the stators 7 using the setting unit 17 having a simple configuration. Furthermore, by changing the position of the concave portion 17a (the concave portion 17a1 and the concave portion 17a2) provided in the setting portion 17, the circumferential position of the stator 7, that is, the phase can be adjusted. Further, by changing the thickness dimension of the setting portion 17, the axial position between the stators 7, that is, the dimension between the stators 7 can be adjusted. Therefore, if these adjustments are necessary at a later date, it can be handled by replacing with an appropriate setting unit 17. That is, it is not necessary to take a large measure such as changing the position of the convex portion 14c.
FIG. 26 is a schematic diagram for illustrating the relationship between the convex portion and the yoke.
As shown in FIG. 26, the length dimension L5 of the convex portion 14c is longer than the length dimension (depth dimension) of the concave portion 17a that is a through hole, that is, the thickness dimension of the setting portion 17. Is preferred.
In this way, when the convex portion 14c of the stator 7 disposed to be opposed is inserted into the same concave portion, the operator can be made aware of this. That is, the erroneous insertion of the convex portion 14c can be prevented.
Further, the position of the outer peripheral end 17 c of the setting portion 17 is set in the radial inner direction with respect to the inner wall surface of the yoke 16. That is, the outer peripheral end 17 c of the setting portion 17 is positioned inside the inner wall surface of the yoke 16 provided in the radially outward direction of the setting portion 17.
In this way, when the stator 7 is laminated in the axial direction via the setting portion 17, it is possible to prevent the outer peripheral end 17 c of the setting portion 17 and the inner wall of the yoke 16 from interfering with each other. Therefore, it is possible to prevent the yoke 16 from being displaced or deformed when the stator 7 is laminated.

Next, the attachment of the magnet according to another embodiment will be illustrated.
FIG. 27 is a schematic diagram for illustrating the attachment of the magnet. FIG. 27A is a schematic exploded view for illustrating the attachment of the magnet, and FIG. 27B is a schematic cross-sectional view for illustrating the attachment of the magnet. Moreover, the arrow drawn in FIG.27 (b) represents the direction of flowing water.
As shown in FIG. 27A, the rotor 4a is provided with a lid portion 11, a moving blade portion 120, a shaft 13, and a magnet holding portion 121. Further, the moving blade portion 120 is provided with a moving blade portion 12a, a moving blade boss portion 12b1, and a holding plate portion 12c.

  A moving blade boss 12b1 is provided on the downstream side of the holding plate 12c. Inside the blade boss 12b1, a hole 12e penetrating in the axial direction is provided in the same manner as the blade boss 12b illustrated in FIG. The hole 12e serves as a flow path for flowing water flowing through the moving blade flow path 12h to the downstream side. An insertion portion 12f through which the shaft 13 is inserted is provided at the central portion of the moving blade boss portion 12b1. And the holding | maintenance part 12g for making the insertion part 12f hold | maintain the axis | shaft 13 in the downstream edge part of the insertion part 12f is provided.

  Further, the moving blade boss portion 12b1 is provided with a locking portion 12b2 for engaging a locking claw 121a provided on the magnet holding portion 121.

  The magnet holding part 121 is provided with a flange part 121c and a locking boss part 121d. A hole 121b having the same diameter as the hole 12e is provided at the center of the magnet holding part 121, and when the magnet holding part 121 is engaged with the moving blade part 120, the hole 121b is formed in the hole 12e. At the same time, it becomes a flow path.

  Further, a locking boss 121d is erected from an annular flange 121c, and a locking claw 121a is provided at an end thereof. In this case, the outer peripheral end of the flange 121c is provided on the side opposite to the flow path. Therefore, it becomes possible to hold the magnet 30 without disturbing the flow of water in the flow path.

  A cylindrical magnet 30 is provided on the outer peripheral surface (end surface in the radially outward direction) of the moving blade boss portion 12b1 and the locking boss portion 121d. On the outer peripheral surface (end surface in the radial direction) of the magnet 30, N poles and S poles are alternately magnetized along the circumferential direction. A seat portion 30 a is provided at the opening of the through hole provided at the center of the magnet 30. The seat portion 30a is sized such that the flange portion 121c can be buried.

In order to hold the magnet 30 on the moving blade portion 120, first, the moving blade boss portion 12b1 is inserted through a through hole provided in the center of the magnet 30. At this time, the moving blade boss portion 12b1 is inserted from the end surface side where the seat portion 30a is not provided. Next, the locking boss portion 121d of the magnet holding portion 121 is inserted from the end surface side of the magnet 30 where the seat portion 30a is provided, and the locking claw 121a is engaged with the locking portion 12b2 of the moving blade boss portion 12b1. By combining, the moving blade portion 120 holds the magnet 30.
FIG. 28 is also a schematic diagram for illustrating the attachment of the magnet. FIG. 28A is a schematic exploded view for illustrating the attachment of the magnet, and FIG. 28B is a schematic perspective view of the magnet.
As shown in FIG. 28A, a moving blade boss portion 12b3 is provided on the downstream side of the holding plate portion 12c of the moving blade portion 122. In the vicinity of the upstream end portion of the moving blade boss portion 12b3, a projection portion 12b4 for engaging with the engaging groove 31a provided in the magnet 31 is provided. Further, a locking claw 12b5 is provided in the vicinity of the downstream end of the moving blade boss 12b3. The locking claw 12b5 is provided at a position where it can engage with the end surface of the magnet 31. A cylindrical magnet 31 is provided on the outer peripheral surface (end surface in the radial direction) of the moving blade boss 12b3. The outer peripheral surface (end surface in the radial direction) of the magnet 31 is alternately magnetized with N and S poles along the circumferential direction. Further, an engagement groove 31 a penetrating in the axial direction is provided in the through hole provided in the center of the magnet 31.

When the moving blade portion 122 holds the magnet 31, the moving blade boss portion 12 b 3 is inserted through a through hole provided at the center of the magnet 31. At this time, the protrusion 12b4, the locking claw 12b5, and the engagement groove 31a of the magnet 31 are engaged. When the moving blade boss portion 12b3 is completely inserted, the locking claw 12b5 and the end surface of the magnet 31 are engaged, and the magnet 31 is held by the moving blade portion 122.
According to the present embodiment, since the protrusion 12b4 is engaged with the engagement groove 31a, the displacement of the magnet 31 in the circumferential direction can be prevented. Therefore, the rotation of the moving blade part 122 can be reliably transmitted to the magnet 31. Moreover, the magnet holding part 121 mentioned above can also be omitted.

FIG. 29 is also a schematic diagram for illustrating the attachment of the magnet. FIG. 29A is a schematic exploded view for illustrating the attachment of the magnet, and FIG. 29B is a schematic perspective view of the magnet.
As shown in FIG. 29A, a moving blade boss portion 12b6 is provided on the downstream side of the holding plate portion 12c of the moving blade portion 123. In the vicinity of the upstream end of the moving blade boss 12b6, a protrusion 12b4 for engaging with an engaging groove 32a provided in the magnet 32 is provided. Further, a locking claw 12b5 is provided in the vicinity of the downstream end of the moving blade boss 12b6. The locking claw 12b5 is provided at a position where it can engage with the locking portion 32b provided in the engagement groove 32a.
A cylindrical magnet 32 is provided on the outer peripheral surface (end surface in the radial direction) of the moving blade boss 12b6. On the outer peripheral surface (end surface in the radial direction) of the magnet 32, N poles and S poles are alternately magnetized along the circumferential direction. An engagement groove 32 a is provided in the through hole provided in the center of the magnet 32. A locking portion 32b is provided in the engaging groove 32a.

When the moving blade portion 123 holds the magnet 32, the moving blade boss portion 12 b 6 is inserted through a through hole provided at the center of the magnet 32. At this time, the protrusion 12b4, the locking claw 12b5, and the engagement groove 32a of the magnet 32 are engaged. When the moving blade boss 12b6 is completely inserted, the locking claw 12b5 and the locking portion 32b are engaged, and the magnet 32 is held by the moving blade 123.
According to the present embodiment, since the protrusion 12b4 is engaged with the engagement groove 32a, the displacement of the magnet 32 in the circumferential direction can be prevented. Therefore, the rotation of the moving blade portion 123 can be reliably transmitted to the magnet 32. Moreover, the magnet holding part 121 mentioned above can also be omitted. Further, the tip of the moving blade boss 12b6 does not protrude from the end face of the magnet 32.

Next, the operation of the faucet hydroelectric generator 1 will be illustrated.
Flowing water that has flowed into the cylindrical portion 2 from a pipe (not shown) connected to the sealing portion 6 is diffused outward in the radial direction by the second nozzle housing portion 9. As shown in FIG. 1, the water flowing from the direction parallel to the rotation center axis moves from the radially outward direction of the blade blade 12a in a plane substantially perpendicular to the rotation center axis. It is ejected toward the wing blade 12a.
The water ejected toward the blade portion 12a flows in the blade passage 12h along the blade portion 12a from the inlet side to the outlet side of the blade portion 12a. It passes through the portion 12e and the small diameter portion 2c and is discharged to the outside of the faucet hydroelectric generator 1.
On the other hand, when the moving blade 12 is rotated by the force of water ejected toward the moving blade 12a, the magnet 5 fixed thereto is also rotated. The end surface (outer peripheral surface) in the radially outward direction of the magnet 5 is such that the N pole and the S pole are alternately magnetized along the circumferential direction (rotational direction). The polarities of the inductors 16a and 16b facing the end surfaces (outer peripheral surfaces) in the direction and the base portion 16c connected to these change. As a result, the direction of the interlinkage magnetic flux with respect to the coil 15 changes, and an electromotive force is generated in the coil 15 to generate power.

As described above, when water passes through the faucet hydroelectric generator 1, a thrust force 110 is generated. In particular, the greater the flow rate, the greater the thrust force 110 is generated. However, the faucet hydroelectric generator 1 is provided with the above-described thrust reduction unit, so that the generated thrust force 110 can be reduced.
In addition, since the amount of water flowing in the moving blade passage 12h can be increased by the lid provided at the upstream end of the moving blade blade 12a, the power generation efficiency can be improved.
Moreover, since the injection hole 19 of the nozzle part 3 can be provided with high accuracy as described above, stable power generation can be performed. Further, since the axial positions of the second nozzle housing portion 9 and the first nozzle housing portion 10 are regulated by the sealing portion 6, the second nozzle housing portion 9 and the first nozzle housing portion 9 are controlled by water pressure or the like. There is no possibility that the nozzle housing part 10 of the present invention is deformed. In addition, when water pressure is applied so that the sealing portion 6 is lifted during power generation, the contact portion 9b that is in contact with the sealing portion 6 is separated. In this case, the second nozzle housing is separated. Since the body part 9 is pressed against the first nozzle housing part 10 by water pressure, a change in the opening area of the injection hole 19 can be suppressed. Therefore, there is no possibility that the opening area of the injection hole 19 changes during assembly of the generator or during power generation, and stable power generation can be performed.

  1 faucet hydroelectric generator, 1a faucet hydroelectric generator, 2 tube part, 2a large diameter part, 2b medium diameter part, 2c small diameter part, 3 nozzle part, 4 rotor, 5 magnet, 6 sealing part, 7 Stator, 8 Stator holding portion, 9 Second nozzle housing portion, 9a Housing boss portion, 9b Abutting portion, 9c Leading portion, 10 First nozzle housing portion, 10a Nozzle groove, 10b Stepped hole, 11 Lid portion, 12 blade portion, 12a blade portion, 12b blade portion, 12b1 blade portion, 12b2 locking portion, 12b3 blade portion, 12b4 protrusion, 12b5 locking claw, 12b6 blade portion Part, 12c holding plate part, 12d hole part, 12h rotor blade flow path, 13 shaft, 14 bobbin, 14a bobbin boss part, 14b collar part, 14c convex part, 15 coil, 16 yoke, 16a inductor, 16b inductor Kuta, 16c Base part, 17 Setting part, 17a Concave part, 17a1 Concave part, 17a2 Concave part, 17b Hole part, 17c Outer peripheral end, 19 Injection hole, 22 Pressure chamber, 23 Lid part, 23a Hole part, 24 Lid part, 24a Peripheral part, 24b Shaft holding portion, 24c rib, 24d hole portion, 25 lid portion, 25c rib, 25d hole portion, 26 lid portion, 26d hole portion, 27 lid portion, 27d hole portion, 30 magnet, 31 magnet, 31a engagement groove, 32 magnet, 32a engaging groove, 32b locking part, 50 water, 100 shower faucet device, 100a shower faucet apparatus, 110 thrust force, 111 force, 112 force, 113 force, 120 moving blade part, 121 magnet holding part 121b hole, 121c collar, 121d locking boss

Claims (2)

A cylindrical portion having a feed water inlet and a feed water outlet and having a feed water channel formed therein;
A moving blade portion having a moving blade portion and provided in the water supply flow path;
A magnet that can rotate integrally with the blade section;
A coil that generates an electromotive force by rotation of the magnet disposed in a radial direction of the magnet;
A nozzle portion having a plurality of injection holes for ejecting water toward the blade blade portion;
A sealing portion provided at a feed water inlet of the cylindrical portion;
With
The nozzle portion includes a stepped hole at a central portion and a first nozzle housing portion having a plurality of nozzle grooves opened at an end face on the sealing portion side at a peripheral portion, and toward the sealing portion. And a second nozzle housing portion provided so as to close the opening of the stepped hole of the first nozzle housing portion, provided with a contact portion protruding in the peripheral portion,
The injection hole is formed by a nozzle groove of the first nozzle housing part and the second nozzle housing part,
The faucet hydroelectric generator characterized in that the second nozzle housing part is brought into contact with the first nozzle housing part by the sealing part through the contact part. The first nozzle housing part has a surface that contacts the inner wall surface of the cylindrical part,
The second nozzle housing portion has a guide portion at an end periphery on the first nozzle housing portion side, and the second nozzle housing portion is a step of the first nozzle housing portion. The faucet hydroelectric generator according to claim 1, wherein, when fitted into the attachment hole, the guide portion comes into contact with a corner portion of the stepped hole.

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