JPH09209970A - Fluid drive method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase an efficiency and apply to a micro machine. SOLUTION: A ring body 4 is supported rotatably by a ring shape support means 6. Plural fix means 16 are erected radially on the outer periphery surface of the ring body 4 and a belt shape thin plate 8 having flexibility, whose one end part is installed on the fix means 16, is arranged in a fluid storing room 6A. Magnet pieces are mounted on the thin plate 8 respectively. When a magnetic field in which the direction is reverse turned periodically at the right/left directions is generated by the electrification of respective coils 10 arranged on the inner surface of the support means 6, a force is applied to the magnet mounted on the thin plate 8 and the thin plate 8 is swung to right/left around the fix means 16. Consequently, the fluid around the thin plate 8 is push-pressed and the force is exerted to the thin plate 8 by its reaction and the fix means 16 is pushed and the ring body 4 is rotated along with impellers 12 and the fluid A in a pipe 26 is driven.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method and apparatus for driving a fluid.

[0002]

2. Description of the Related Art Conventionally, pumps and blowers have been used to transport liquids such as water and gases such as air. In all of these, the blades are rotated by a driving means such as a motor to drive the fluid, and the fluid is pumped up or made to flow.

[0003]

However, in the conventional pump or blower, since the motor and the power transmission means are arranged in the center of the blade body, the smooth flow of the fluid is hindered.
As a result, the efficiency is reduced. In addition, although interest in micromachines has increased in recent years, when trying to obtain rotational force on the scale of a micromachine, the conventional motor has a limit to miniaturization due to its structure, and therefore pressure, mechanical force, or chemical force is limited. Various methods utilizing the force of the dynamic reaction have been studied.

Therefore, an object of the present invention is to provide a fluid driving method and device which are highly efficient and can be applied to micromachines.

[0005]

The present invention is a method for driving a fluid, and in order to achieve the above object, a plurality of blade bodies are attached to the inside of a circular ring body, and the ring body can be rotated. The magnet is attached to a thin plate having a predetermined length and having flexibility to accommodate fluid outside the ring body, and the thin plate extends in the circumferential direction of the ring body outside the ring body. The thin plate is oscillated in a direction orthogonal to its longitudinal direction by allowing it to exist and fixing one end to the ring body and arranging it in the fluid, and applying a magnetic field to the magnet outside the ring body. The thin plate is rotated by the reaction force of the fluid received when the thin plate swings, and the blade body is caused to generate a flow in a direction orthogonal to the ring surface inside the ring body.

The present invention is also characterized in that a plurality of the magnets are mounted on the thin plate, and the magnets are mounted at different positions in the longitudinal direction of the thin plate. The present invention is also characterized in that the magnet has a stronger magnetic force as it is arranged farther from the fixed end of the thin plate. The present invention is also a device for driving a fluid, comprising a circular annulus,
A plurality of blade bodies attached to the inside of the ring body, a support means for rotatably supporting the ring body, and a fluid storage chamber that is formed radially outside the ring body together with the ring body; and the fluid storage chamber. A fluid stored in the fluid storage chamber, a flexible thin plate extending in the fluid storage chamber in the circumferential direction of the ring body, a fixing means for fixing one end of the thin plate to the ring body, It is characterized by comprising a magnet attached to the thin plate, and a coil arranged outside the fluid storage chamber and spaced apart from the thin plate in a direction orthogonal to the extending direction of the thin plate.

The present invention is also characterized in that the plurality of magnets mounted on the thin plate are mounted at different positions in the extending direction of the thin plate. The present invention is also characterized in that the magnet has a stronger magnetic force as it is arranged farther from the fixed end of the thin plate. The present invention is also characterized in that the plurality of coils are arranged adjacent to each other in the circumferential direction of the ring body.

According to the present invention, the thin plates are sandwiched and spaced from each other at a position closer to the thin plates than the coil,
It is characterized by further comprising an annular plate having a plurality of holes, which is attached to the ring body with its center aligned with the ring body. The invention is also characterized in that the support means are attached to a tube of approximately the same diameter as the annulus.

In the fluid driving method and the fluid driving apparatus of the present invention, when a current is passed through the coil and its direction is periodically switched, a magnetic field in which the directions of the magnetic force lines are periodically reversed is generated. As a result, a force that periodically reverses the direction acts on the magnet, and the thin plate swings around the fixed end portion. As a result, the fluid around the thin plate is driven, and the reaction force exerts a rotational force on the annulus, causing the annulus to rotate with the blade.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional side view showing an example of a fluid drive device according to the present invention, and FIG. 2 is a sectional plan view of the same.
This fluid drive device drives a fluid based on the fluid drive method of the present invention. Hereinafter, an example of the fluid drive method will be described together with an example of the fluid drive device of the present invention.

The fluid driving device 2 comprises an annulus 4, supporting means 6,
It is composed of a thin plate 8, a coil 10, a blade 12, and the like. The ring body 4 has a circular shape, and a plurality of, for example, four blade bodies 12 are arranged inside toward the center of the ring body 4, and each blade body 12 is attached to the ring body 4 at one end. The supporting means 6 has an annular shape as a whole, the inner diameter is substantially equal to the diameter of the ring body 4, and the cross section is U-shaped as shown in FIG. The inner edge portions on both sides are each formed with a projection 14 continuous in the circumferential direction on the inner surface. The ring body 4 is arranged so that its center coincides with the support means 6, and the convex portion 14 is formed.
Is loosely inserted inside the annulus. As a result, the ring body 4 is rotatably supported by the support means 6, and a fluid storage chamber 6A is formed outside the ring body 4 and inside the support means 6.
Incidentally, it is optional to rotatably support the ring body 4 by a conventionally known structure using a bearing and a seal material.

Inside the fluid storage chamber 6A outside the ring body 4, a plurality of flexible thin plates 8 extending in the circumferential direction of the ring body 4 are arranged. Each thin plate 8 has a strip shape and is shown in FIG.
As shown in FIG. 5, the circular arc shape is formed along the ring body 4. In addition, these thin plates 8 are formed of a synthetic resin film in this embodiment. On the outer peripheral surface of the ring body 4, rod-shaped fixing means 16 corresponding to each of the thin plates 8 are erected radially outward of the ring body 4 in a radial manner.
Has one end fixed to the fixing means 16.

A plurality of magnets 18 are mounted on each of the thin plates 8 as shown in FIG. Each magnet 18 has a strip shape in this embodiment, and three magnets 1 are used in this embodiment.
8 are arranged at intervals in the extending direction of the thin plate 8. As shown in the side view of FIG. 4, each magnet 18 is attached to one surface (lower surface in FIG. 4) of the thin plate 8, and in this embodiment, the thin plate side (upper side in the drawing) is an S pole and the opposite side is an N pole. Has become. The direction of the magnetic poles can be reversed.

In this embodiment, the thin plate 8 is placed in the fluid storage chamber 6A.
Two parallel annular ring-shaped plates 20 are arranged on both sides (right and left in FIG. 1) of the thin plate 8 at intervals.
These annular plates 20 are arranged so that the centers thereof coincide with the ring body 4, and are attached to the inner peripheral portion near both sides of the ring body 4. As shown in detail in the perspective view of FIG.
A large number of punched holes 22 are formed in the circumferential direction.

As shown in FIG. 1, a plurality of thin coils 10 are attached to the inner surfaces 24 on both sides of the supporting means 6 so as to be adjacent to each other in the circumferential direction of the supporting means 6. Each coil 10 is wound around an axis line that is substantially orthogonal to the ring surface of the ring body 4. FIG. 5 is a plan view showing the coil 10 attached to the inner surface 24 of the supporting means 6. All of the coils 10 are electrically connected in series for each inner surface of the supporting means 6.

The entire apparatus is arranged in the middle of the pipe 26 (FIG. 1), and both side portions of the supporting means 6 are connected to the pipe 26 while the ring surface of the ring body 4 is substantially perpendicular to the extending direction of the pipe 26. It is fixed to the end.

Next, the operation will be described. Fluid A in the pipe 26
Is filled, and the fluid is filled in the fluid storage chamber 6A through the gap between the support means 6 and the ring body 4. Therefore, each vane 12 is in this fluid A. Further, in the present embodiment, the fluid has a relatively high viscosity and does not have magnetism.

The coils 10 connected in series are energized to generate a magnetic field. At this time, one inner surface 2 of the supporting means 6
A current is passed through the coil 10 mounted on the coil 4 and the coil 10 mounted on the other inner surface 24 in the same direction so that the magnetic lines of force generated by the coils 10 are aligned. Then, the direction of the current supplied to the coil 10 is reversed at a constant cycle. As a result, the direction of the generated magnetic force lines is periodically switched to the direction of arrow B or arrow C, as shown in FIG. The coil 10 is shown in a simplified manner in FIG.

As a result of the generation of such a magnetic field, as shown in FIG. 7A, when the direction of the lines of magnetic force is in the direction of arrow C, the magnet 18 attached to the thin plate 8 has the S pole on the upper side. Therefore, each magnet 18 is attracted upward, and as a result, the thin plate 8 swings around the fixing means 16 in the direction of arrow D.
On the other hand, as shown in FIG. 7B, when the direction of the magnetic force lines is in the direction of arrow B, each magnet 18 is attracted downward,
As a result, the thin plate 8 swings around the fixing means 16 in the direction of arrow E.

When each thin plate 8 periodically oscillates vertically in this way, the surrounding fluid is driven and flows in the direction of arrow F. Therefore, as shown in FIG. 8, the reaction is exerted on each thin plate 8, and the fixing means 16 is pushed in the direction indicated by the arrow G opposite to the flow direction of the fluid (arrow F), and as a result, the ring 4 is moved to the blade. Rotate with body 12. Then, as the blade body 12 rotates, the fluid A is driven and flows in the direction of arrow H in FIG. 1, for example.

The swinging range of the thin plate 8 is the annular plate 2 on both sides.
Since it reaches the position of 0, the thin plate 8 swings and the coil 10
Even if the thin plate 8 moves, the end of the thin plate 8 does not wear due to friction.

As described above, in the fluid drive unit 2 of this embodiment, the blade body 12 is driven in the peripheral portion and there is no drive means such as a motor or power transmission means in the central portion, so that the fluid is not obstructed by them. Flow. Therefore, efficiency is improved. Further, since the mechanism for obtaining the rotational force is very simple unlike a conventional motor, miniaturization is easy and application to a micromachine is possible.

The above embodiment is merely an example, and it goes without saying that various modifications can be made without departing from the scope of the claims. For example, it is effective that the magnet 18 mounted on the thin plate 8 has a stronger magnetic force as the magnet 18 arranged farther from the fixing means 16.
In that case, the stronger the force is exerted as the magnet 18 is farther from the fixing means 16, the thin plate 8 is supple like a caudal fin of a fish as shown in FIGS. 9 (A), (B), and (C). It oscillates, and the rotational force can be obtained more effectively.

The number of the magnets 18 mounted on one thin plate 8 can be one, two, or four or more, as well as three. Further, the shape is not limited to the strip shape, but may be various shapes such as a circle.
Further, in the embodiment, the case where the fluid filled in the fluid storage chamber 6A and the fluid that is flowed by the blade body 12 are the same has been described, but the inside of the ring body 4 and the fluid storage chamber 6A are watertightly divided, and Another fluid may be used.

[0025]

As described above, in the fluid driving method and the fluid driving apparatus of the present invention, when a current is passed through the coil and its direction is periodically switched, a magnetic field in which the direction of the magnetic force lines is periodically reversed is generated. . As a result, a force that periodically reverses the direction acts on the magnet, and the thin plate swings around the fixed end portion. As a result, the fluid around the thin plate is driven, and the reaction force exerts a rotational force on the annulus, causing the annulus to rotate with the blade.

Therefore, in the present invention, since the blade body is driven in the peripheral portion and there is no driving means such as a motor or power transmission means in the central portion, the fluid flows without being obstructed by them. Therefore, efficiency is improved. Further, since the mechanism for obtaining the rotational force is very simple unlike a conventional motor, miniaturization is easy and application to a micromachine is possible.

[Brief description of drawings]

FIG. 1 is a sectional side view showing an example of a fluid driving device according to the present invention.

2 is a cross-sectional plan view showing the fluid drive system of FIG. 1. FIG.

FIG. 3 is a perspective view showing a rotating portion of the fluid drive system of FIG.

FIG. 4 is a side view showing in detail a thin plate and a magnet that constitute the fluid drive system of FIG.

5 is a plan view showing in detail a coil which constitutes the fluid drive system of FIG. 1. FIG.

FIG. 6 is a side view for explaining the operation of the fluid drive system in FIG.

FIG. 7 is an explanatory diagram showing an operation of the fluid drive system of FIG.

FIG. 8 is a plan view showing the operation of the fluid drive system of FIG. 1.

FIG. 9 is an explanatory view showing the movement of a thin plate which constitutes the fluid drive system of FIG. 1.

[Explanation of symbols]

 2 Fluid Drive Device 4 Annular Body 6 Supporting Means 8 Thin Plate 10 Coil 12 Feather Body 16 Fixing Means 18 Magnet 20 Annular Plate 26 Tube

Claims (9)

[Claims] 1. A method of driving a fluid, comprising a plurality of blades attached to the inside of a circular ring body, the ring body being rotatably supported, and having a predetermined flexibility. A magnet is attached to the thin plate, a fluid is contained outside the ring body, and the thin plate is extended in the circumferential direction of the ring body outside the ring body to fix one end to the ring body. The thin plate is swung in a direction orthogonal to its longitudinal direction by causing a magnetic field to act on the magnet outside the annulus, and the reaction force of the fluid that the thin plate receives when swinging causes the thin plate to swing. A fluid driving method, wherein a ring member is rotated, and a flow is generated inside the ring member in a direction orthogonal to a ring member surface by the blade member. 2. The fluid driving method according to claim 1, wherein a plurality of the magnets are mounted on the thin plate, and the magnets are mounted at different positions in the longitudinal direction of the thin plate. 3. The fluid drive method according to claim 1, wherein the magnet has a stronger magnetic force as it is arranged at a position farther from the fixed end of the thin plate. 4. A device for driving a fluid, comprising: a circular ring body, a plurality of blades attached to the inside of the ring body, rotatably supporting the ring body, and a ring together with the ring body. Support means for forming a fluid storage chamber on the outer side in the radial direction of the body, fluid stored in the fluid storage chamber, and a flexible thin plate extending in the fluid storage chamber in the circumferential direction of the ring body. A fixing means for fixing one end of the thin plate to the ring body, a magnet attached to the thin plate, and the thin plate outside the fluid storage chamber in a direction orthogonal to the extending direction of the thin plate. A fluid drive device comprising: a coil disposed with a space therebetween; 5. The fluid drive device according to claim 4, wherein a plurality of the magnets are mounted on the thin plate, and the magnets are mounted at different positions in the extending direction of the thin plate. 6. The fluid drive unit according to claim 4, wherein the magnet has a stronger magnetic force as it is arranged farther from the fixed end of the thin plate. 7. The fluid drive unit according to claim 4, wherein a plurality of the coils are provided, and the coils are arranged adjacent to each other in the circumferential direction of the annular body. 8. A position closer to the thin plate than the coil,
The fluid drive device according to claim 4, further comprising annular plates having a plurality of holes, which are sandwiched between the thin plates and are spaced apart from each other, and which are attached to the ring body such that their centers are aligned with the ring body. 9. The fluid drive unit according to claim 4, wherein the support means is connected to a pipe having substantially the same diameter as the ring body.