JP2007274856A - Generator for faucet, and automatic faucet device with generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a generator for faucet, which secures voltage resistance property without marring power generation efficiency, and to provide an automatic faucet device with generator. <P>SOLUTION: This generator for faucet is equipped with a cylinder which is provided, with its inside led to a water-supply passage and with its axial direction roughly parallel with the direction of the flow of supply water, a moving blade which is provided inside the cylinder capably of rotating around the axis of the cylinder, a magnet which is provided inside the cylinder capably of rotating around the axis of the cylinder in a body with the moving blade, and a coil which is provided outside the cylinder, catching the tubular wall of the cylinder between. The section, interposed between at least the magnet and the coil, of the tubular wall of the cylinder consists of resin material, and the coil is adjacent to the tubular wall of the cylinder. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a faucet generator that generates electric power using a flow of water supply and an automatic faucet device including the faucet generator.

  2. Description of the Related Art Conventionally, there is known an automatic faucet device in which a sensor is detected by inserting a hand under a faucet and water is automatically discharged from the faucet. There is also known a device that arranges a small generator in the flow path of such an automatic water faucet device, stores electric power obtained by the generator, and supplements electric power of a circuit such as the above-described sensor. Yes.

For example, Patent Document 1 discloses a generator in which a generator is disposed in a pipe portion to which a primary pressure before being reduced by a pressure reducing valve is applied, and a coil installed on a side surface of the pipe is covered with a resin waterproof cover. ing. However, in this case, since a large pressure (primary pressure) is applied to the waterproof cover made of resin having a low strength, there is a possibility that the waterproof cover and further the entire apparatus may be damaged. Further, if the waterproof cover is made thicker in order to improve the strength, the distance between the magnet and the coil is increased, and the magnetic flux passing through the coil is weakened, resulting in a decrease in the amount of power generation.
JP 2004-76637 A

  The present invention provides a faucet generator and a generator-equipped automatic faucet device that ensure pressure resistance without impairing power generation efficiency.

  According to one aspect of the present invention, the inside is in communication with the water supply flow path, and the cylinder is provided with the axial direction substantially parallel to the direction in which the water supply flows, and is rotatable about the central axis of the cylinder. A moving blade provided inside the cylindrical body, a magnet integrated with the moving blade and rotatable about a central axis of the cylindrical body, A coil provided on the outside of the cylinder so as to face the magnet with a tube wall interposed therebetween, and at least a portion interposed between the magnet and the coil in the tube wall of the cylinder Is made of a resin material, and the coil is adjacent to a portion made of the resin material on the tube wall of the cylindrical body.

  In addition, according to another aspect of the present invention, a water supply inlet, a water supply outlet, a water supply passage for guiding water supplied from the inlet to the water outlet, and the water supply passage are opened and closed. A solenoid valve, a cylinder that communicates with the water supply flow path, and is provided with an axial direction substantially parallel to a direction in which the water flows, and the cylinder that is rotatable about a central axis of the cylinder A moving blade provided inside the body, a magnet integrated with the moving blade and rotatable about the central axis of the cylindrical body, and a tube wall of the cylindrical body A coil provided on the outside of the cylindrical body so as to be opposed to the magnet, and at least a portion of the tube wall interposed between the magnet and the coil is made of resin. The coil is made of a material, and the coil is a portion made of the resin material of the tube wall of the cylindrical body Adjacent automatic faucet device equipped with a generator, characterized in that that there is provided a.

  According to the present invention, a faucet generator and an automatic faucet device with a generator that ensure pressure resistance without impairing power generation efficiency are provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 2 is a schematic view illustrating an installation aspect of the automatic faucet device with a generator (hereinafter also simply referred to as an automatic faucet device) according to the first embodiment of the present invention.
FIG. 3 is a partial cross-sectional view of the main part of the automatic faucet device.

  The automatic water faucet device according to the present embodiment includes a water discharge fitting 3 attached to a wash basin 2 or the like, for example. The water discharge fitting 3 is connected to an inflow port 5 such as tap water via a pipe 4. The water discharge fitting 3 includes a cylindrical main body 3a and a water discharge portion 3b that extends outward in the diameter of the main body 3a and is provided on the upper portion of the main body 3a. A water discharge port 6 is formed at the distal end side of the water discharge unit 3 b, and a sensor 7 is built in the vicinity of the water discharge port 6.

  Inside the pipe 4 and the water discharge fitting 3, a water supply flow path that guides the water supplied from the inflow port 5 to the water discharge port 6 is formed. An electromagnetic valve 8 that opens and closes the water supply flow path is built in the main body 3a of the water discharge fitting 3, and a constant flow valve 55 that limits the amount of water discharge is built in the downstream of the electromagnetic valve 8. Yes. In addition, a pressure reducing valve or a pressure regulating valve (not shown) for reducing the pressure when the water supply source pressure is too higher than the working pressure is built in upstream of the electromagnetic valve 8. A generator 11 is built in the water discharger 3b downstream of the constant flow valve 55. The main body 3a is provided with a charger 56 for charging the electric power generated by the generator 11, and a control unit 57 for controlling the driving of the sensor 7 and the opening and closing of the electromagnetic valve 8. Since the generator 11 is disposed downstream of the constant flow valve 55, the water supply source pressure (primary pressure) does not act directly on the generator 11. The constant flow valve 55, the pressure reducing valve, and the pressure regulating valve are appropriately provided as necessary.

  FIG. 1 is a schematic diagram showing the inside of the generator 11.

  The generator 11 mainly includes a cylindrical body 13, a stationary blade 14, a moving blade 15, a magnet M1, and a coil 16 in a cover 12 (see FIG. 3).

  The cylindrical body 13 is built in the water discharge portion 3b of the water discharge fitting 3 with the inside thereof communicating with the water supply flow path, and the axial direction of the cylindrical body 13 is installed so as to be substantially parallel to the direction in which the water supply flows. The Inside the cylinder 13, a stationary blade 14, a moving blade 15, and a bearing 17 are provided in order from the upstream side in the direction in which the water supply flows. The centers of the stationary blade 14, the moving blade 15 and the bearing 17 coincide with the axial center of the cylindrical body 13.

  The stationary blade 14 has a shape in which a conical body is integrally provided on the upper surface (a surface located on the upstream side) of the cylindrical body. On the peripheral surface of the stationary blade 14, a plurality of protruding fixed blade portions 18 protruding outward in the diameter are provided. The fixed wing portion 18 is inclined from the upstream side to the downstream side while twisting rightward with respect to the axial center of the stationary blade 14. The stationary blade 14 is fixed to the cylindrical body 13.

  A moving blade 15 is provided on the downstream side of the stationary blade 14 so as to be separated from the stationary blade 14. The moving blade 15 has a cylindrical shape, and a plurality of protruding blade portions 19 projecting radially outward are provided on the circumferential surface thereof. Contrary to the fixed wing part 18 of the stationary blade 14, the wing part 19 of the moving blade 15 is inclined from the upstream side to the downstream side while twisting leftward with respect to the axial center. The rotor blade 15 is rotatably supported on a bearing 17 fixed to the cylindrical body 13. That is, the moving blade 15 is rotatable around the central axis of the cylindrical body 13.

  The bearing 17 is formed by connecting a ring member 21 fixed to the inner wall portion of the cylindrical body 13 and a shaft support portion 22 provided at the center of the ring member 21 by a connecting member 23 extending in the radial direction. . Since the connection member 23 is not closed and penetrates, the flow of water supply inside the cylinder 13 is not hindered.

  A shaft member 24 is rotatably supported on the shaft support portion 22, and the shaft member 24 is fixed to the shaft center of the moving blade 15. Alternatively, one end portion of the shaft member 24 may be fixed to the shaft support portion 22 and the moving blade 15 may be fitted to the shaft member 24 so as to be rotatable.

  A ring-shaped magnet M <b> 1 is provided on the blade portion 19 of the moving blade 15 so as to surround the peripheral surface of the moving blade 15. The magnet M1 is not in contact with the inner peripheral surface of the cylinder 13, and a gap exists between the magnet M1 and the inner peripheral surface of the cylinder 13. When the moving blade 15 rotates, the magnet M1 also rotates integrally with the moving blade 15.

  A coil 16 is provided on a portion of the outer peripheral surface of the cylindrical body 13 facing the magnet M1. The coil 16 includes a pair of yokes 25 and 26 shown in FIGS. 4 and 5, and a coil wiring portion 16 a disposed in an annular space formed by combining the yokes 25 and 26.

  The yokes 25 and 26 are both made of a magnetic material. The yoke 25 has an annular plate 25a that faces one end face of the coil wiring portion 16a, and a peripheral surface portion 25b that faces the peripheral surface portion of the coil wiring portion 16a, and further, on the inner peripheral edge of the annular plate 25a. Are provided with a plurality of pole teeth 25c protruding in the axial direction. The yoke 26 has an annular plate 26a facing the other end face of the coil wiring portion 16a, and a plurality of pole teeth 26b provided on the inner peripheral edge of the annular plate 26a so as to protrude in the axial direction. The pole teeth 25c of the yoke 25 are provided at equal intervals along the circumferential direction, and the pole teeth 26b of the yoke 26 are also provided at equal intervals along the circumferential direction. As shown in FIG. The pole teeth of the other yoke are positioned between the pole teeth of the yoke, and the pole teeth 25c and 26b of both yokes 25 and 26 face the inner peripheral surface of the coil wiring portion 16a.

  The pole teeth 25c and 26b of both yokes 25 and 26 are provided in contact with the portion of the outer peripheral surface of the cylindrical body 13 facing the magnet M1. As shown in FIG. 6, the magnet M <b> 1 has N poles and S poles alternately magnetized in the circumferential direction, and the pole teeth 25 c and 26 b of the yokes 25 and 26 are tubes of the cylindrical body 13. Opposite the N or S pole of the magnet M1 with a wall in between. Further, the coil wiring portion 16a faces the magnet M1 with the pole teeth 25c and 26b and the tube wall of the cylindrical body 13 interposed therebetween.

  The cylinder 13 is made of a resin material. As the resin material of the cylindrical body 13, for example, modified PPO (poly phenylene oxide) resin, PPS (poly phenylene sulfide) resin, vinyl chloride resin and the like are preferably used, but not limited thereto, other resins such as, for example, Silicone resin, FRP (fiber reinforced plastics), ABS (acrylonitrile-butadiene-styrene) resin, acrylic resin, PC (polycarbonate) resin, styrene resin, epoxy resin, urethane resin, polypropylene resin, polyethylene resin, PPO (poly phenylene oxide) A resin may be used.

  Next, the operation of the faucet generator according to this embodiment and the automatic faucet device including the same will be described.

FIG. 16 is a schematic diagram showing the flow of water supply (solid arrow) and the flow of electricity (dotted arrow) in the automatic faucet device with a generator according to the present embodiment.
When the user holds his hand under the spout 6, the sensor 7 detects this and the control unit 57 opens the electromagnetic valve 8. Thereby, water supply is supplied to the inside of the cylindrical body 13 of the generator 11, and the water that flows inside the cylindrical body 13 is discharged from the water outlet 6. When the user moves his hand away from the bottom of the spout 6, the solenoid valve 8 is closed and water automatically stops.

  The flowing water that has flowed into the cylindrical body 13 flows on the conical surface of the stationary blade 14 and is diffused radially outward, flows between the fixed blade portions 18 on the peripheral surface of the stationary blade 14, and moves rightward with respect to the axial center. It turns into a swirling flow that swirls toward the moving blade 15. The swirling flow that has flowed through the stationary blade 14 strikes the inner wall surface on the upper side of the blade portion 19 provided on the peripheral surface of the moving blade 15, rotates the moving blade 15 and the magnet M <b> 1, and flows on the peripheral surface between the blade portions 19. . Furthermore, it passes through the bearing 17, passes through the inside of the cylindrical body 13, and reaches the spout 6.

  In the specific example shown in FIG. 1, the swirl flow formed by the stationary blade 14 flows into the upper side of the blade portion 19 of the moving blade 15 and swirls in the right direction. Acts, and the rotor blade 15 rotates clockwise. When the moving blade 15 rotates, the magnet M1 provided integrally therewith also rotates. As shown in FIG. 6, the magnet M <b> 1 is magnetized with N poles and S poles alternately arranged along the circumferential direction, so that it faces the magnet M <b> 1 across the resin tube wall 13 a of the cylinder 13. The polarities of the pole teeth 25c and 26b of the yokes 25 and 26 are changing. That is, the state in which the yoke 26 is the S pole when the yoke 25 is the N pole and the yoke 26 is the N pole when the yoke 25 is the S pole is repeated, whereby the interlinkage magnetic flux with respect to the coil wiring portion 16a is changed. An electromotive force is generated in 16a, that is, power is generated.

  The electric power generated by the generator 11 is charged into the charger 56 and then used to drive the electromagnetic valve 8, the sensor 7, and the control unit 57.

  In the process from flowing water rotating the rotating body to obtaining electric power, conversion from hydraulic energy to rotational energy and further conversion from rotational energy to electric power are performed. At the time of these energy conversions, as shown in FIG. 7, energy loss occurs in each conversion process, which causes a decrease in generator efficiency. In particular, in the process of converting rotational energy into generated power, energy loss (eddy current loss) due to the change in magnetic flux passing through the pipe due to the rotation of the magnet and the generation of eddy current in the pipe becomes a problem.

  This eddy current loss is proportional to the electrical conductivity of the member through which the magnetic flux passes. Therefore, in the present embodiment, the cylindrical tube wall 13a facing the magnet M1 is made of a resin material. That is, the portion through which the magnetic flux of the magnet M1 passes is made of a resin material having a lower electrical conductivity than stainless steel generally used for piping, thereby reducing eddy current loss in the process of converting rotational energy into generated power. The power generation performance (power generation efficiency) can be improved.

  However, since the inside of the cylinder 13 is a flow path through which running water such as tap water passes, for example, if the tube wall of the cylinder 13 is made of a resin material that is inferior in strength to stainless steel or the like, a certain amount of pressure is ensured. Although the thickness needs to be increased, if the thickness is increased, the distance between the magnet M1 and the coil 16 is also increased, the magnetic force cannot be secured, and the power generation efficiency is lowered.

  Therefore, in the present embodiment, in order to suppress an increase in the distance between the magnet M1 and the coil 16, the resin tube wall 13a facing the magnet M1 is made thinner than the other parts, and the thinned part 13a is externally provided. The strength of the thinned portion 13a is compensated by installing the coil 16 so as to surround the ring. Thereby, the power generation efficiency can be improved while maintaining the pressure resistance without increasing the thickness of the resin tube wall 13a opposed to the magnet M1.

  For example, when the supply pressure of the feed water to the cylinder 13 is less than 0.07 (MPa), the thickness of the resin tube wall 13a facing the magnet M1 is set to 0.5 mm or more and 2.0 mm or less. By doing so, it is possible to ensure the necessary power generation performance by suppressing an increase in the distance between the magnet M1 and the coil 16 while ensuring the pressure resistance.

  In addition, by setting the inner diameter of the inlet 5 to 20 mm or less, the automatic faucet device according to this embodiment can be installed indoors for use in cleaning applications, and the inner diameter of the inlet 5 is 5 mm. By doing so, the necessary amount of washing water can be secured.

  Hereinafter, other embodiments of the present invention will be described. In addition, about the element similar to what was mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

[Second Embodiment]
FIG. 8 is a schematic cross-sectional view of a faucet generator according to the second embodiment of the present invention.

  In this embodiment, the outer peripheral surface of the cylinder 13 made of a resin material is covered and reinforced with a pair of reinforcing plates 27 and 28 made of a metal material. Each reinforcing plate 27, 28 has flange portions 27a, 28a projecting radially outward, and the coil 16 is sandwiched between the flange portions 27a, 28a in the axial direction.

  In the present embodiment, the cylindrical body 13 is made of a resin material, so that the eddy current loss is suppressed, and the resin cylindrical body 13 is reinforced from the outside with the metal reinforcing plates 27 and 28, so that the pressure resistance performance is improved. Can be improved. The reinforcing plates 27 and 28 also have a function of positioning the coil 16.

[Third Embodiment]
FIG. 9 is a schematic view showing the inside of the faucet generator according to the third embodiment of the present invention.
FIG. 10 is a schematic cross-sectional view of the faucet generator.

  Also in this embodiment, the stationary blade 14, the moving blade 15, and the bearing 17 are provided in the cylindrical body 13 in order from the upstream side in the direction in which the water supply flows, with their axis centers aligned.

  The ring member 21 of the bearing 17 is fixed on a step portion 29 formed on the inner peripheral surface of the cylindrical body 13. A shaft member 24 fixed to the shaft center of the rotor blade 15 is rotatably supported on the shaft support portion 22 of the bearing 17. The tip of the shaft member 24 protrudes from the moving blade 15 and supports the stationary blade 14. The tip end portion of the shaft member 24 and the stationary blade 14 are not fixed to each other, and the shaft member 24 is rotatable with respect to the stationary blade 14 fixed to the cylindrical body 13.

  Alternatively, as shown in FIG. 11, both end portions of the shaft member 24 may be fixed to the shaft support portion 22 and the stationary blade 14, respectively, and the moving blade 15 may be fitted to the shaft member 24 so as to be rotatable. .

  The cylindrical body 13 has a flange portion 32 projecting radially outward, and an annular magnet M <b> 2 fixed to the blade portion 19 of the moving blade 15 is accommodated in the flange portion 32. A pair of annular coils 16 are provided outside the flange portion 32 so as to sandwich the magnet M <b> 2 in the axial direction of the cylindrical body 13.

  Each coil 16 includes a cylindrical yoke 31 shown in FIG. 12 and a coil wiring portion (not shown) disposed inside the yoke 31. The yoke 31 is composed of two yokes 33 and 34 both made of a magnetic material. The yoke 33 includes an annular plate portion 33a opposed to one end surface portion of the coil wiring portion (opposite surface opposite to the magnet M2), a circumferential surface portion 33b opposed to the circumferential surface portion of the coil wiring portion, and a cylindrical body. A plurality of pole teeth 33c opposed to the magnet M2 with the 13 flange portions 32 interposed therebetween. The plurality of pole teeth 33c protrude radially inward and are provided integrally with the peripheral surface portion 33b, and are provided at equal intervals along the circumferential direction. The yoke 34 protrudes outward in the diameter and has a ring shape having a plurality of pole teeth 34 a arranged between the pole teeth 33 c of the yoke 33.

  On one end face side of the magnet M2, N and S poles are alternately magnetized along the circumferential direction, and on the other end face side, N and S poles are alternately arranged along the circumferential direction. Although it is magnetized, it is magnetized so that the polarities of the both end faces are reversed when viewed in the axial direction.

  When the rotor blade 15 rotates, the magnet M2 provided integrally therewith also rotates, and the polarities of the pole teeth 33c and 34a of the yokes 33 and 34 facing the magnet M2 across the flange portion 32 of the cylindrical body 13 are changed. It will change. That is, when the yoke 33 is the N pole, the yoke 34 is the S pole, and when the yoke 33 is the S pole, the yoke 34 is the N pole. An electromotive force is generated, that is, power is generated.

  The cylinder 13 is made of a resin material including the flange portion 32. A cover 12 made of a metal material covers and reinforces the cylindrical body 13 and the coil 16 disposed outside the cylindrical body 13. Thereby, also in this embodiment, by suppressing the eddy current loss by configuring the portion facing the magnet M2 from the resin material, the resin portion is reinforced from the outside with the metal cover 12, thereby improving the pressure resistance performance. Secured. Since it is not necessary to increase the thickness of the resin portion in order to ensure the withstand voltage, an increase in the distance between the magnet M2 and the coil 16 can be suppressed, and a decrease in power generation efficiency can also be suppressed. Further, the flange portion 32 of the cylindrical body 13 also has a function of positioning the coil 16.

  Further, in the present embodiment, not all of the cylindrical body 13 is made of a resin material, and at least the flange portion 32 facing the magnet M2 is sufficient.

[Fourth Embodiment]
FIG. 13 is a schematic view showing the inside of a faucet generator according to the fourth embodiment of the present invention.
FIG. 14 is a schematic cross-sectional view of the faucet generator.

  In the present embodiment, the stationary blade 14, the moving blade 15, the magnet M3, and the bearing 17 are provided in the cylindrical body 13 in order from the upstream side in the direction in which the water supply flows, with their axis centers aligned. . The magnet M <b> 3 has a cylindrical shape and is spaced apart from the moving blade 15 in the axial direction.

  The ring member 21 of the bearing 17 is fixed on a step portion 29 formed on the inner peripheral surface of the cylindrical body 13. A shaft member 24 fixed to the shaft center of the rotor blade 15 is rotatably supported on the shaft support portion 22 of the bearing 17. The shaft member 24 penetrates the hollow portion of the magnet M3 and the moving blade 15 and protrudes upstream of the moving blade 15 and is supported by the stationary blade 14. The tip end portion of the shaft member 24 and the stationary blade 14 are not fixed to each other, and the shaft member 24 is rotatable with respect to the stationary blade 14 fixed to the cylindrical body 13.

  A magnet mounting member 36 is fixed to the shaft member 24 via a plurality of connecting members 35 extending in the radial direction. The magnet mounting member 36 includes a ring-shaped plate portion 37 and a cylindrical portion 38 that is provided integrally with the edge of the central hole of the plate portion 37 and extends upstream. The magnet M3 is fixed on the plate portion 37 by fitting the hollow portion thereof to the outer peripheral surface of the cylindrical portion 38 of the magnet mounting member 36. Therefore, the magnet M3 is fixed to the moving blade 15 via the magnet mounting member 36 and the shaft member 24. When the moving blade 15 rotates, the magnet M3 rotates integrally with the moving blade 15. The outer peripheral surface of the magnet M3 is opposed to the inner peripheral surface of the cylindrical body 13 with a gap, and the rotation of the magnet M3 is not hindered.

  Alternatively, as in another specific example shown in FIG. 15, both end portions of the shaft member 24 are fixed to the shaft support portion 22 and the stationary blade 14, respectively, and the moving blade 15 is rotated with respect to the shaft member 24. It is good also as a structure to insert. In this specific example, the coupling member 35 of the magnet mounting member 36 is engaged with the shaft member 24 so as to be rotatable around the shaft member 24, and the upper end of the cylindrical portion 38 is fixed to the rotor blade 15. Therefore, when the rotor blade 15 rotates, the magnet M3 rotates around the shaft member 24 together with the magnet mounting member 36. An opening 38a is formed in a portion of the cylindrical portion 38 that is connected to the moving blade 15. Through this opening 38a, flowing water that has flowed through the moving blade 15 flows to the hollow portion of the magnet M3.

  For example, two coils 16 are provided on the outer peripheral surface of the cylindrical body 13 so as to face the magnet M3 in accordance with the axial length of the magnet M3. As in the first embodiment, the coil 16 is disposed in a pair of yokes 25 and 26 shown in FIGS. 4 and 5 and an annular space formed by combining these yokes 25 and 26. A coil wiring portion 16a.

  The pole teeth 25c and 26b of both yokes 25 and 26 are provided in contact with the portion of the outer peripheral surface of the cylindrical body 13 facing the magnet M3. The magnet M3 has N poles and S poles alternately magnetized in the circumferential direction, and the pole teeth 25c and 26b sandwich the tube wall of the cylindrical body 13 with the N pole or S of the magnet M3 interposed therebetween. Opposite the pole. Further, the coil wiring portion 16a faces the magnet M3 with the pole teeth 25c and 26b and the tube wall of the cylindrical body 13 interposed therebetween.

  In the cylindrical body 13, the tube wall portion 3a between the magnet M3 and the coil 16 is made of a resin material. By configuring the tube wall 3a of the cylindrical body 13 facing the magnet M3 from a resin material, eddy current loss can be suppressed.

  Furthermore, the strength of the thin resin tube wall 3a is compensated by the coil 16 by installing the coil 16 in an annular shape on the outer peripheral surface of the resin tube wall 3a. As a result, the power generation efficiency can be improved while maintaining the pressure resistance without increasing the thickness of the resin tube wall 3a.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to them, and various modifications can be made based on the technical idea of the present invention.

  Examples of the faucet device in which the faucet generator of the present invention is used include a kitchen faucet device, a living and dining faucet device, a shower faucet device, a toilet faucet device, and a toilet faucet device. In addition to automatic faucet devices using human body detection sensors, for example, one-touch faucet devices by turning on / off a manual switch, fixed-quantity water faucet devices that stop water by counting the flow rate, and stop when a set time has elapsed. It can also be applied to a water faucet device. The generated power may be used for, for example, light-up of water discharge, water discharge of electrolysis functional water, flow rate display (metering), temperature display, voice guide, and the like.

It is a mimetic diagram showing the inside of the faucet generator concerning a 1st embodiment of the present invention. It is a schematic diagram which illustrates the installation aspect of the automatic faucet device with a generator which concerns on the 1st Embodiment of this invention. It is a fragmentary sectional view of the principal part of the automatic water faucet device. In the same embodiment, it is a perspective view showing the yoke and the coil accommodated in this inside. FIG. 5 is an exploded perspective view of a coil and a yoke shown in FIG. 4. In the same embodiment, it is a schematic diagram showing the arrangement | positioning relationship between a magnet and the pole tooth of a yoke. It is a schematic diagram which illustrates the energy loss in each process of the energy conversion from hydraulic energy to rotational energy, and the energy conversion from rotational energy to generated electric power. It is a schematic diagram showing the inside of the faucet generator which concerns on the 2nd Embodiment of this invention. It is a schematic diagram showing the inside of the faucet generator which concerns on the 3rd Embodiment of this invention. It is a schematic cross section of the faucet generator according to the first specific example in the third embodiment. It is a schematic cross section of the faucet generator concerning the 2nd example in the 3rd embodiment. In the 3rd Embodiment, it is a schematic diagram showing the arrangement | positioning relationship between a magnet and a yoke. It is a schematic diagram showing the inside of the faucet generator which concerns on the 4th Embodiment of this invention. It is a schematic cross section of the faucet generator concerning the 1st example in the 4th embodiment. It is a schematic cross section of the faucet generator according to the second specific example of the fourth embodiment. In the automatic faucet device with a generator concerning the embodiment of the present invention, it is a mimetic diagram showing the flow of water (solid line arrow) and the flow of electricity (dotted line arrow).

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Water discharge metal fitting, 5 ... Inlet, 6 ... Water discharge port, 7 ... Sensor, 8 ... Solenoid valve, 11 ... Generator, 12 ... Cover, 13 ... Cylindrical body, 14 ... Static blade, 15 ... Moving blade, 16 ... Coil, 16a ... coil wiring part, 18 ... fixed wing part, 19 ... wing part, 25, 26 ... yoke, 25c, 26b ... pole teeth, 27, 28 ... reinforcing plate, 33, 34 ... yoke, 33c, 34a ... pole Teeth, M1-M3 ... Magnet

Claims (6)

A cylindrical body whose inside is communicated with the water supply flow path and provided with the axial direction substantially parallel to the direction in which the water supply flows;
A moving blade provided inside the cylinder so as to be rotatable around a central axis of the cylinder;
A magnet integrally provided with the moving blade and provided inside the cylinder so as to be rotatable around a central axis of the cylinder;
A coil provided outside the cylindrical body facing the magnet with the tube wall of the cylindrical body interposed therebetween;
With
In the tube wall of the cylindrical body, at least a portion interposed between the magnet and the coil is made of a resin material,
The faucet generator according to claim 1, wherein the coil is adjacent to a portion made of the resin material on a tube wall of the cylindrical body.   The faucet generator according to claim 1, wherein the thickness of the thinnest portion of the tube wall of the cylindrical body is 0.5 mm or more and 2 mm or less. A water supply inlet,
A water supply outlet,
A water supply channel for guiding water supplied from the inlet to the water outlet;
A solenoid valve for opening and closing the water supply flow path;
A cylindrical body whose inside is communicated with the water supply flow path and provided with the axial direction substantially parallel to the direction in which the water supply flows;
A moving blade provided inside the cylinder so as to be rotatable around a central axis of the cylinder;
A magnet integrally provided with the moving blade and provided inside the cylinder so as to be rotatable around a central axis of the cylinder;
A coil provided outside the cylindrical body facing the magnet with the tube wall of the cylindrical body interposed therebetween;
With
In the tube wall of the cylindrical body, at least a portion interposed between the magnet and the coil is made of a resin material,
The automatic faucet device with a generator, wherein the coil is adjacent to a portion made of the resin material on a tube wall of the cylindrical body.   The automatic faucet with a generator according to claim 3, wherein the thickness of the thinnest portion of the pipe wall of the cylindrical body is 0.5 mm or more and 2 mm or less. apparatus The inner diameter of the inlet is 5 mm or more and 20 mm or less,
The automatic faucet device with a generator according to claim 3 or 4, wherein a supply pressure of water supply to the cylindrical body is less than 0.07 MPa. A constant flow valve provided downstream of the solenoid valve;
The automatic water faucet device with a generator according to any one of claims 3 to 5, wherein the cylindrical body is provided downstream of the constant flow valve.

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