JP2000186661A - Fluid-pressure motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means to generate an output high enough to allow the operation of various load apparatuses by a fluid pressure of an applying water current. SOLUTION: A fluid-pressure motor 1A comprises a housing 10 being of watertight or airtight structure; a rotor 20 rotatably arranged in the housing 10 and having a plurality of grooves 21 formed in an outer peripheral surface; a rotor shaft 25 arranged at the rotation center of the rotor 20 and integrally mounted with the rotor 20, and having at least one end protruded externally of the housing 10; at least one nozzle 30 to inject fluid against the groove 21 of the rotor 20; and fluid exhaust ports 40 arranged at least each one on one side and the other side of the housing 10 in a direction perpendicular to the rotor shaft 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid pressure motor for obtaining a rotational output by rotating a rotor using fluid pressure of water, air, gas other than air, or the like.

[0002]

2. Description of the Related Art Conventionally, there is a turbine for a generator, for example, utilizing water pressure, and the turbine is rotated by a water flow to generate power. However, the structure for rotating a turbine for a hydroelectric generator is generally very large, and it is impossible to use it in a general household or the like.

[0003] On the other hand, various small hydroelectric generators have been devised. For example, in a "small hydraulic power generator" described in JP-A-59-215968, a small hydraulic power generator is installed downstream of a water meter provided on a service pipe drawn from a water main to each home. This small hydroelectric generator has a draw pipe connected to the lower part of the water tank, and a power generator installed at the lower part of the water tank.The propeller is rotated by the water flow ejected from the oblique hole of the water tank, and this rotation is performed. Electric power is obtained by transmitting the power to the power generator via a pulley, a belt, or the like, and operating the power generator.

[0004]

By the way, like a large hydropower generator, a small hydropower generator also has a size, a shape,
Although there are some differences in the structure and the like, power is basically generated by applying a water flow to the turbine blade and rotating the turbine blade. Even with the small hydroelectric generator described in the above publication, a corresponding power generation amount can be obtained, but it is not enough to efficiently convert the kinetic energy of the water flow into electric energy.
In addition, the small hydroelectric generator described in the above publication uses a water tank, so even if it is small, it has to be relatively large in order to secure a sufficient amount of power generation, and it is also necessary to reduce the size. There is a limit. Further, while the hydroelectric generator is intended only for power generation, it is not contemplated to perform other tasks in other applications, such as utilizing the rotational motion of a rotating shaft coupled to a turbine blade.

The present invention has been made in view of such a problem, and an output sufficient for operating various load devices can be obtained from a fluid pressure such as an added water flow (high conversion efficiency). It is an object of the present invention to provide a means which can easily cope with not only miniaturization but also large-size, and can realize low cost with a simple structure.

[0006]

The above object is achieved by a fluid pressure motor according to the present invention. That is, claim 1 of the present invention
The fluid pressure motor described above has a housing having a watertight or airtight structure, a rotor rotatably disposed in the housing and having a plurality of grooves on an outer peripheral surface, and a rotor that is integrally attached to the rotor at the center of rotation of the rotor. A rotor shaft having one end protruding outside the housing, at least one ejection port provided in the housing to eject fluid toward a groove of the rotor, and at least one side and the other of the housing in a direction perpendicular to the rotor axis; And one fluid outlet provided on each side.

In this fluid pressure motor, when fluid (water, air, gas other than air, etc.) is jetted from the jet port toward the groove of the rotor, the rotor rotates integrally with the rotor shaft and jets into the groove. The discharged fluid exits the housing through the fluid outlet. Here, in the fluid pressure motor of the present invention, since one fluid outlet is provided on each of at least one side and the other side of the housing with respect to a direction perpendicular to the rotor axis, that is, at least two fluid outlets are provided. Is provided, the fluid injected into the groove quickly flows out of the housing from the two fluid discharge ports, and does not become a resistance that suppresses the rotation of the rotor by accumulating inside the housing. As a result, the kinetic energy of the added fluid is efficiently converted into the rotational motion of the rotor and the rotor shaft, the rotational speed of the rotor shaft increases, and the rotational torque also increases.

If the number of fluid outlets is one, the fluid ejected from the ejection port does not flow smoothly to the outside of the housing, but stays inside the housing. Is suppressed, and a sufficient rotation speed and rotation torque cannot be obtained. In the present invention,
The fluid used to rotate the rotor is not specified as long as it can rotate the rotor. For example, the liquid includes water, the gas includes air, and a gas other than air. Such a fluid is ejected from the ejection port toward the groove of the rotor.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. FIG. 1 is a front view showing the inside of a fluid pressure motor according to one embodiment, FIG. 2 is a side view showing the same inside, and FIG. 3 is a plan view (top view) of the motor.
The fluid pressure motor 1A uses, for example, water as a fluid, and includes a housing 10 having a watertight structure, a rotor 20 rotatably disposed in the housing 10, and having a plurality of grooves 21 on an outer peripheral surface; Rotor 2 at the center of rotation
A rotor shaft 25 integrally attached to the housing 10 and having at least one end protruding outside the housing 10, a nozzle 30 provided on the housing 10 and serving as at least one ejection port for ejecting fluid toward the groove 21 of the rotor 20. And at least the housing 1 in a direction perpendicular to the rotor shaft 25.
And one fluid outlet 40 provided on each of one side and the other side.

For the housing 10, the rotor 20, the rotor shaft 25, the nozzle 30, and the like, materials such as gunmetal, brass, stainless steel, and plastic are used, but a combination of these materials may be used. Here, the housing 10 is supported by a raised portion 4 which is gently raised on the base 3, and the base 3 has a screw insertion hole 5 for fixing the same. In this embodiment, the housing 10 includes a cylindrical body 11 and the cylindrical body 1.
1 comprises circular side plates 12 attached so as to close both side openings, and the side plates 12 are fixed to the bent edges of the cylindrical body 11 with screws 15. Of course, the housing 10
Has a watertight structure with a seal ring or the like so that water does not leak out of the housing 10 from the mounting portion between the cylindrical body 11 and the side plate 12. The housing 10 is provided with a head cover 13 (not shown in FIGS. 2 and 3) for supporting the nozzle 30 and the water pressure meter 45 on the upper side.

A rotor shaft 25 is integrally mounted at the center of rotation of a rotor 20 rotatably disposed within the housing 10 so as to penetrate the rotor 20. The rotor shaft 25 is mounted on the inside of both side plates 12 of the housing 10. 50 rotatably supported. At a portion where the rotor shaft 25 penetrates the one side plate 12, an oil sealer 5 is provided inside the side plate 12.
1 is attached, and water passes through the housing 10
It does not leak to the outside.

A groove 21 formed on the outer peripheral surface of the rotor 20
Are present at equal angular intervals from the center of rotation of the rotor 20 (for example, 12), and have an elliptical shape in plan view here. The groove 21 has a mortar shape that is deepest at the center and becomes shallower toward the edge. The nozzle 30 is disposed on the upper side of the housing 10 so as to spray water in a tangential direction to the outer peripheral surface of the rotor 20 (see FIG. 1). The water is spread in a fan shape in the nozzle 2
It is formed so as to hit almost the whole centering on the central portion of 1. The nozzle 30 is provided at a distal end of a fluid supply pipe 31. Another flexible pipe, a hose, or the like is connected to the pipe 31, and water is supplied from a water source.

On the other hand, the fluid outlet 40 is connected to the housing 10.
Are provided on both side plates 12 at symmetrical positions (linearly symmetrical positions) with respect to a direction perpendicular to the rotor 25 axis. A discharge pipe 41 is connected to each of the fluid discharge ports 40. The discharge pipes 41 may be independent from each other, but it is more convenient to join the drain pipes 41 as shown in FIG. In this case, the angle θ formed by the two discharge pipes 41 is preferably within about 45 °. this is,
If the angle formed by the discharge pipes 41 is larger than 45 °, the water from both the discharge pipes 41 collides with each other at the junction, thereby making it difficult for water to flow.
This is for preventing the water from staying inside the 0.

In this fluid pressure motor 1A, a water pressure meter 45 is mounted on the upper side of the cylindrical body 11 of the housing 10, and the discharge pipe 41 is closed to measure the water pressure in a state where the water is fully stored inside the housing 10. I can do it. In the fluid pressure motor 1A configured as described above, when water is injected from the nozzle 30 of the fluid supply pipe 31 toward the groove 21 of the rotor 20 through a flexible pipe, a hose, or the like, the water spreads in a fan shape and the groove 21 , The rotor 20 rotates. The water that has hit the groove 21 reaches the lower side of the housing 10 due to the rotation or flow down of the rotor 20.
Since there are two fluid outlets 40 on the lower side of 0,
Water quickly flows out of the housing 10 from the two discharge ports 40 through the discharge pipe 41. Thereby, the kinetic energy of the water flow is efficiently converted into the rotational motion of the rotor 20 (that is, the rotor shaft 25), and the rotor shaft 25 rotates at high speed with a large torque.

FIG. 2 is a side view showing the inside of a fluid pressure motor according to another embodiment. However, although the shape of each element is different, the same elements as those of the fluid pressure motor 1A are denoted by the same reference numerals. The fluid pressure motor 1B has basically the same structure as the motor 1A. The housing 10 includes a cylinder 11
And circular side plates 12 respectively attached so as to close the openings on both sides of the cylindrical body 11. A fixed shaft 17 is installed between both side plates 12, and nuts 18 are provided at both ends of the fixed shaft 17.
Are screwed into each other so that the cylindrical body 11 is sandwiched between the side plates 12. A seal ring 55 is fitted on the contact boundary between the cylindrical body 11 and the side plate 12.

Both ends of a rotor shaft 25 integrally mounted on the rotor 20 protrude outside the housing 10 (that is, the side plate 12), and are rotatably supported by bearings 50 mounted on the side plate 12. An oil sealer 51 is attached to the side plate 12 adjacent to the bearing 50. The housing 10 has a watertight structure by the oil sealer 51 and the seal ring 55.

Here, the grooves 21 of the rotor 20 have a crescent shape in plan view, and a plurality of grooves 21 are similarly arranged at equal angular intervals from the center of the rotor 20. The fluid outlet 40 is
The discharge pipe 41 is connected to each of the discharge ports 40. The discharge pipe 41 is connected to the lower part of the cylindrical body 11 of the housing 10 in a line symmetric manner. The discharge pipe 41 joins one pipe as shown in FIG. Note that the fluid pressure motors 1A and 1B shown in the above embodiment are merely examples, and various changes can be made. For example, in the fluid pressure motors 1A and 1B, the number of the nozzles 30 (and the fluid supply pipes 31) is one.
The rotational force of the rotor 20 may be further increased. Alternatively, the number of the fluid discharge ports 40 (and the discharge pipes 41) is two, but three or more fluid discharge ports may be provided to make drainage smoother. For example,
When three fluid outlets 40 are provided, two outlets 40
Optimally, another outlet 40 is provided just in the middle of the symmetrical position. In consideration of the rotational efficiency of the rotor 20, the nozzle 30 is arranged so as to spray water tangentially to the outer peripheral surface of the rotor 20, and the fluid outlet 40 is similarly arranged tangentially. Is preferred. Furthermore, by arranging the nozzle 30 and the discharge port 40 in the same direction, drainage is further smoothed. On the other hand, instead of the nozzle 30, a spout is formed directly at an appropriate position of the cylindrical body 11 of the housing 10, and water is supplied from the spout to the groove 2
One may be injected.

The fluid pressure motors 1A and 1B are very versatile. Next, various examples of use (systems using a fluid pressure motor) will be described with reference to FIGS. FIG. 5 is a schematic diagram when the fluid pressure motor is applied to domestic water supply. In FIG.
1 is provided with a bypass pipe 82, a three-way valve 83 is provided at a branch point thereof, the fluid pressure motor 1A (or 1B) is connected to the bypass pipe 82, and a dynamo 70 is attached to the rotor shaft 25 of the motor 1A. Directly connected to the dynamo 70
Connect ED85.

In this fluid pressure motor system, when tap water is normally used from the faucet 81, the three-way valve 83 is set to the water pipe 80 side. When power is generated using the fluid pressure motor 1A, the three-way valve 83 is set on the bypass pipe 82 side, and when the faucet 81 is opened, the rotor 20 of the fluid pressure motor 1A rotates as described above, and The dynamo 70 generates electric power by the rotation of the rotor shaft 25 that rotates integrally. Then, the LED 85 is turned on by the obtained electricity. Therefore, the LED 85 is lit while using water. Of course, depending on the way of water (strength), LED 85
Changes. Note that the LED 85 can be used for lighting, an emergency light, and the like. For example, when the flashlight is not held at the time of the power failure or when there is no flashlight, the faucet 81 is opened,
The illumination of the ED85 is immediately available and convenient.

FIG. 6 is a schematic diagram when the fluid pressure motor is applied to a fountain facility. The fountain is generally suctioned by a pump 90 installed in the ground and blows up from a spout 91. A fluid pressure motor 1A (or 1B) is provided in a flow path between the pump 90 and the spout 91, A dynamo 70 is directly connected to the rotor shaft 25, and a light 95 for illuminating a fountain is connected to the dynamo 70. As a result, the water pressure obtained by the pump 90 can be effectively used, and power for the light 95 is not required, which is also useful for energy saving.

FIG. 7 is a schematic diagram of a case where a fluid pressure motor is applied to a water supply tower 100 installed by a support 101 on the roof of a building. Pipe 102 for sending water to water tower 100
The fluid pressure motor 1A (or 1B) is provided on the way, and the dynamo 70 is directly connected to the rotor shaft 25, and the electric decoration 105 installed on the roof is connected to the dynamo 70. Thus, each time water is supplied to the water tower 100 through the pipe 102, the illumination 105 is turned on. The fluid pressure motor 1A
May be provided in the middle of the pipe 103 from the water tower 100 to each floor (see the dashed line).

In each of the usage examples shown in FIGS. 5 to 7, power is generated by the dynamo 70 utilizing the rotation of the rotor shaft 25 of the fluid pressure motors 1A and 1B. Is preferably converted to electricity efficiently. An example of the structure of the dynamo 70 is shown in FIG.
Is shown schematically in FIG. In the dynamo 70 of FIG. 8, a plurality of (here, 12) grooves 71a are formed at equal angular intervals on an inner peripheral surface of a cylindrical core 71, and a coil 72 is wound around each groove 71a. The groove 71a extends in the longitudinal direction of the core 71, and the coil 72 is wound continuously around the groove 71a. A rotor 73 is rotatably arranged inside the core 71, and a rotary shaft 74 to which the rotor shafts 25 of the fluid pressure motors 1 </ b> A and 1 </ b> B are connected by a joint is integrally mounted at the center of the rotor 73. A plurality (here, eight) of magnets 75 are attached at equal angular intervals to the outer peripheral surface of the rotor 73. The magnet 75 is elongated like the coil 72 and extends in the longitudinal direction of the core 71, and faces the coil 72.

If the dynamo 70 having this structure is used, the rotational movement of the rotor shaft 25 is efficiently converted to electric power. Note that the rotor 73 may be directly fixed to the rotor shaft 25 of the fluid pressure motors 1A and 1B without using the rotating shaft 74. or,
The dynamo 70 in FIG. 8 is an eight-pole having eight magnets 75, but has at least four poles such as four poles, six poles, ten poles, and twelve poles.
If the number is more than the maximum, a structure with high conversion efficiency will be obtained. Further, the number of the grooves 71a of the core 71 is not limited to 12, but may be increased or decreased as appropriate. In addition, in the dynamo 70 having such a structure, the number of poles can be easily changed according to the load.

On the other hand, FIG. 9 shows an application example in which a dynamo is not used. FIG. 9 shows a hand-held cleaning tool using a fluid pressure motor. A cap 120 is attached to the tip of a fluid pressure motor 110 having a cylindrical shape, and is attached to the tip of a rotor shaft 113 of the motor 110. The brush 121 protrudes from the tip of the cap 120. In this cleaning tool, a hose or the like is connected to a fluid supply pipe 112 provided in a housing 111 of the fluid pressure motor 110, and when tap water is introduced, the rotor shaft 113 rotates and the brush 121 at the tip thereof rotates. Cleaning can be performed by the rotation of the brush 121 and the water coming out of the tip of the cap 120.

Of course, by replacing the brush 121 with a large one, it is possible to wash the car.
If a polishing plate is attached instead of, polishing can be performed. If the blades are attached, it can be used as a handy type fan. On the other hand, a reduction mechanism composed of gears or the like may be attached to the rotor shafts 25 of the fluid pressure motors 1A and 1B, and the rotation speed of the rotor shaft 25 may be reduced to be used for another load.

In addition, although not shown in the drawings, for example, the water meter is provided with a fluid pressure motor and a dynamo, and the information (water consumption, etc.) of the water meter is transmitted to the waterworks bureau by the electric power obtained by the dynamo. If transmission is performed, meter reading becomes unnecessary. Further, in the above-described fluid pressure motor and fluid pressure motor system, water is taken up as a fluid, but air or a gas other than air can be applied in the same manner as other fluids.

Here, a description will be given of the number of rotations of the rotor shaft 25 obtained by the fluid pressure motors 1A and 1B having the above-described structure, and the electric power obtained by combination with the dynamo 70. Although it depends on the structure and size, in the case of a normal domestic water supply water pressure (approximately 1.5 to 2 k pressure), the number of rotations of the rotor shaft 25 at no load is 2000 to 3000 rpm.
The power obtained when the dynamo 70 is combined is
DC 15 V, current 0.5-1 A. In the case of a water pressure of about 5 k, the rotation speed of the rotor shaft 25 under no load is about 5000 rpm, the electric power in combination with the dynamo 70 is DC 50 V, and the current is about 1.5 A. However, these numerical values can be obtained at a minimum, and the output can be further increased by using an optimum conversion efficiency structure.

[0028]

As described above, according to the fluid pressure motor according to the first aspect of the present invention, at least one housing is provided on at least one side of the housing with respect to the direction perpendicular to the rotor shaft. The following effects can be obtained because the fluid outlet is provided, that is, at least two fluid outlets are provided. (1) The kinetic energy of the added fluid is efficiently converted into the rotational motion of the rotor and the rotor shaft, the rotational speed of the rotor shaft increases, and the rotational torque also increases. (2) Not only can it be easily reduced in size, but it can also be easily adapted to increase in size. (3) Simple structure and low cost. (4) It can be widely applied to industrial equipment using a fluid such as water or air. (5) According to the second, third, and fourth configurations, the conversion efficiency can be further improved, and the output can be increased.

[Brief description of the drawings]

FIG. 1 is a front view showing the inside of a fluid pressure motor according to one embodiment.

FIG. 2 is a side view showing the inside of the fluid pressure motor of FIG.

FIG. 3 is a plan view (top view) of the fluid pressure motor of FIG. 1;

FIG. 4 is a side view showing the inside of a fluid pressure motor according to another embodiment.

FIG. 5 is a schematic diagram when the fluid pressure motor of the embodiment is applied to domestic water supply.

FIG. 6 is a schematic diagram when the fluid pressure motor of the embodiment is applied to a fountain facility.

FIG. 7 is a schematic diagram when the fluid pressure motor of the embodiment is applied to a water supply tower installed on the roof of a building.

FIG. 8 is a schematic diagram showing an example of the structure of a dynamo used in combination with the fluid pressure motor of the embodiment.

FIG. 9 is a perspective view showing a handy type cleaning tool using the fluid pressure motor of the embodiment.

[Explanation of symbols]

 1A, 1B Fluid pressure motor 10 Housing 20 Rotor 21 Groove 25 Rotor shaft 30 Nozzle (jet port) 40 Fluid outlet 70 Dynamo

Claims (4)

[Claims] 1. A housing having a water-tight or air-tight structure, a rotor rotatably disposed in the housing and having a plurality of grooves on an outer peripheral surface, and being integrally mounted on the rotor at a rotation center of the rotor, at least one end portion. A rotor shaft protruding outside the housing, at least one ejection port provided in the housing and ejecting fluid toward a groove of the rotor, and at least one side and the other side of the housing with respect to a direction perpendicular to the rotor axis. A fluid pressure motor comprising: a fluid discharge port provided one each. 2. The fluid pressure motor according to claim 1, wherein the grooves of the rotor have a crescent shape in a plan view formed at equal angular intervals from the center of rotation of the rotor. 3. The fluid pressure motor according to claim 1, wherein the ejection port is arranged to eject the fluid in a tangential direction to an outer peripheral surface of the rotor. 4. The fluid pressure motor according to claim 1, wherein the fluid discharge port is disposed at a position symmetrical with respect to a direction perpendicular to the rotor axis.