JPH0739753B2 - Wave making method and apparatus using focusing phenomenon - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a manufacturing method and an apparatus using a focusing phenomenon.

[Conventional technology]

Conventionally, the following techniques have been known as techniques utilizing the focusing phenomenon of waves.

Human stone destructive technology.

Ultra high temperature and high pressure generation technology using solid explosion.

Ultra high temperature and high pressure generation technology using gas convergence detonation.

Ultra high temperature and high pressure generation technology using focused gas shock.

Focusing wave-eliminating or focusing wave-enhancing device by an underwater lens plate provided near the coast.

Except for these, all are for focusing a shock wave in a fluid or a solid, and a technique for focusing a wave on the surface of a liquid has not been proposed except.

With regard to the above, since the wave from one direction is guided into the narrow passage, the wave is increased in size, and a very large focusing effect cannot be expected.

On the other hand, the following methods are known as methods for artificially generating waves in a wave pool, an experimental water tank, or the like.

Waves are generated by rocking a wave-making plate installed in water back and forth.

A large amount of water stored in the water storage tank is dropped at once into the pool to generate waves.

Wind is blown from the side to the surface of the water to generate waves.

[Problems to be Solved by the Invention]

However, when the above-mentioned conventional water wave generation technology is applied to manufacture a wave making device utilizing the focusing phenomenon, there are the following problems.

In order to obtain a large wave, it is indispensable to increase the size of the wave making device, which increases the installation floor area and construction cost of the wave making device, and it is difficult to adapt to a super large pool. .

Since it is necessary to install a plurality of wave-making devices, it is difficult to obtain regular waves and energy loss is large.

Since it has a drive unit, it is necessary to give sufficient consideration to durability, safety, and maintainability.

It is difficult to change the focusing pattern periodically or to change the wave properties drastically.

By the way, the focusing phenomenon is essentially considered to be a kind of wave interference phenomenon. That is, it is a phenomenon in which a wave formed first is continuously interfered by concentrating the wave at a specific position, thereby obtaining a high wave.

A wave-making device that uses only wave interference requires a large-scale device to obtain a large wave, and the generation of a large wave is
Since it is limited to the part where the waves interfere, it is difficult to use for equipment that many swimmers enjoy at the same time.

Therefore, the object of the present invention is to reduce the size of the device and obtain a large-sized water wave, which is excellent in durability, safety, and maintainability. It is an object of the present invention to provide a wave-making method and apparatus that make use of the focusing phenomenon and whose properties can be drastically changed.

[Means for Solving the Problems]

The present invention is provided outside the periphery of a circular or fan-shaped pool in which water is stored in advance, and is provided in an annular shape or an arc shape over the entire circumference, the lower end of which is opened and submerged below the water surface of the pool. Water is stored in the water storage tank, and the water in the water storage tank is drained into the pool for a short period of time to proceed toward the center of the pool on the peripheral surface of the pool. Form a circular or arc-shaped wave
The waves are continuously interfered with each other as they travel toward the center of the pool to generate a focusing phenomenon, or a focusing phenomenon is generated in an elliptical pool in which water is stored in advance. , The water is stored in a water tank with a circular cross-section whose lower end is open and is submerged below the water surface of the pool, and the water in the water tank is drained into the pool in a short time. On the water surface of the periphery of the water storage tank, a wave traveling from the elliptical focal position of the pool toward the peripheral portion and reflected at the peripheral portion is formed, and the wave is propagated to the other elliptic focal position of the pool. A continuous wave is generated to cause a high wave to generate a focusing phenomenon, and thus the water level of the pool gradually increases from the peripheral portion to the central portion of the pool. Those having features that artificially generates waves to grow in size.

Next, an embodiment of a wave-making device utilizing the focusing phenomenon of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing one embodiment of a wave-making device utilizing the focusing phenomenon of the present invention.

As shown in FIG. 1, a wave-making device utilizing the focusing phenomenon according to the present invention includes a circular pool 1 and a pool 1.
It is composed of an annular water storage tank 2 provided all around the outer circumference of the periphery of the water storage tank, and a water pouring / draining means 3 for pouring water into the water storage tank 2.

The bottom 1A of the pool 1 is inclined upward toward the center. This is to further promote the growth of waves traveling from the peripheral portion of the pool 1 to the central portion thereof, as will be described later.

A column 4 is erected at the center of the bottom 1A of the pool 1, and a monitoring tower 5 is provided on the column 4. The periphery of the support column 4 is covered with a net 6. The net 6 has a function of preventing a swimmer from being swept away by the waves and colliding with the support column 4.

A wave-making block 7 is provided around the entire periphery of the pool 1. The wave making block 7 is provided with a groove 7A having a bottom surface curved in an arc shape. The wave-making block 7 has the action of causing the water drained from the water storage tank 2 to drop vigorously onto the water surface at the peripheral portion of the pool 1 by the pouring / draining means 3. The groove 7A of the wave making block 7 is submerged below the water surface 1 of the pool 1.

The lower end of the water storage tank 2 is open and is submerged below the water surface 1 of the pool 1. The upper end of the water storage tank 2 is sealed and the pool 1
Appearing on the water surface l of. The lower end of the water storage tank 2 is open to the outer half of the groove 7A of the wave making block 7. As a result, in the groove 7A of the wave-making block 7, a water spout 7B from which the water in the water storage tank 2 is jetted is formed over the peripheral portion of the pool 1. At the upper end of the water storage tank 2, a wave preventing plate 8 that horizontally extends to the pool 1 side is attached. The wave preventing plate 8 has a function of preventing the water ejected from the fountain 7B of the wave making block 7 and the water of the reflected wave from the center of the pool from scattering outside the pool 1. Breakwater 8 and pool 1
A net 9 for preventing danger is stretched between the bottom 1A and the bottom 1A.

The pouring / draining means 3 includes a vacuum chamber 10 having a drain valve 10A, a pump 11 having an air vent valve 11A for sucking air in the vacuum chamber 10, and a vacuum chamber 10
And a plurality of connecting pipes 12 for connecting the water storage tank 2 and the air pressure adjusting valves 13 and 14 attached to each of the connecting pipes 12.

According to the wave-making device using the focusing phenomenon of the present invention configured as described above, wave-making is performed as follows.

Water is put in the pool 1 in advance until the lower end of the water storage tank 2 is submerged below the water surface l. Next, the air pressure adjusting valves 13 and 14, the drain valve 10A, and the air vent valve 11A are closed. Then, the pump 11 is operated to evacuate the inside of the vacuum chamber 10.

When the inside of the vacuum chamber 10 is evacuated in this way, the air pressure adjusting valve 13 is opened to reduce the internal pressure of the water storage tank 2 and introduce the water in the pool 1 into the water storage tank 2.

Next, after closing the air pressure adjusting valve 13, the air pressure adjusting valve 14 is opened to the atmosphere. As a result, the water in the water storage tank 2 is drained from the water storage tank 2 all at once, collides with the curved groove 7A of the wave making block 7, and vigorously flows from the fountain port 7B onto the peripheral surface of the pool 1. To fall. As a result, a ring-shaped wave is formed on the water surface at the peripheral edge of the pool 1.

The waves thus formed travel concentrically toward the central portion of the pool 1, and gradually grow toward the central portion due to the focusing phenomenon to increase in size.

In this way, due to the waves that gradually become high and rush, the swimmers in the pool 1 can enjoy more varied swimming.

The pool 1 may be fan-shaped as shown in FIGS. 2 and 3. In this case, the water storage tank 2 is the pool 1
It is provided on the arc-shaped peripheral portion of. Other configurations are similar to those of the above-described embodiment.

As shown in FIGS. 4 and 5, the pool 1 may be formed by facing two fan-shaped pools 1A and 1B to each other. Also in this case, the water storage tank 2 is provided on the arc-shaped peripheral portions of the pools 1A and 1B. Other configurations are similar to those of the above-described embodiment.

In such a pool 1, if water is drained from both water storage tanks 2 at the same time, the maximum wave can be obtained at the throttle portion S at the center of the pool. If the water is drained only from one of the water storage tanks 2, relatively low waves reach the other pool 1B.
If a rubber boat is placed on the narrowed portion S and only one pool 1A is wave-formed, the rubber boat can be moved to the other pool 1B as the high waves arrive.

Further, as shown in FIGS. 6 and 7, if the pool 1 is formed into an elliptical shape and the water storage tank 2 and the wave making block 7 are installed at one elliptic focal position (0), one elliptic focal position (0 The wave generated concentrically from) is reflected at the peripheral portion of the pool 1 and then converges to the other elliptic focal position (0 '), so that a high wave is obtained at this position. Also in this case, other configurations are similar to those of the above-described embodiment.

In addition to the above changes, the following changes are possible.

If floats are provided on the columns 4 in the pool 1, the floats move up and down due to the waves, which makes the fun even more interesting.

Besides the pool, it can be applied to experimental aquariums, appreciation equipment, toys, etc. In this case, liquids other than water can also be used.

Waves can be periodically generated by repeatedly pouring and draining water into the water storage tank 2, but when pouring water into the water storage tank 2, the wave and the air pressure adjusting valve are linked together. That is, when the waves return from the central portion of the pool 1 to the peripheral portion, if only the air pressure adjusting valve 14 is opened and water is injected into the water storage tank 2, the power of the pump 11 can be reduced.

The plane shape of the pool 1 is a triangle in addition to the above-mentioned shape,
It may be a polygon such as a quadrangle or various shapes such as a tongue.

The drainage from the water storage tank 2 may be performed once as described above (in this case, the largest wave is obtained), or may be divided into several times and drained. In this case, the operation cycle of the pump 11 can be extended.

The water storage tank 2 provided over the entire circumference of the pool 1 is divided into several along the circumference, and, for example, if water is poured and drained alternately every other cycle, the operation cycle of the pump 11 Can be extended.

As described above, when the water storage tank 2 is divided into a plurality of parts, if the amount of drainage water from the water storage tank 2 is changed between the left half and the right half, it is possible to change the wave generation point due to the focusing phenomenon. This is because the flow velocity of the wave generated from the side of the water storage tank 2 having a large amount of drainage is faster than the flow velocity of the wave generated from the side of the water storage tank 2 having a small amount of drainage.

By controlling the opening / closing timing and the throttle amount of the air pressure adjusting valve 14, a random wave can be obtained by utilizing the wave interference and focusing phenomenon.

〔The invention's effect〕

As described above, according to the present invention, the following effects can be obtained.

Since the operating principle and structure are simple, the overall size of the device can be made compact and the manufacturing cost can be reduced.

It has excellent durability and safety because it has no driving part in the water.

The wave generation pattern can be easily changed only by operating the valve.

The waves are in good shape and reproducible.

Since the device can be downsized, it can be added to the existing swimming pool.

Since no noise or vibration is generated, there is no pollution problem.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a wave-making device utilizing the focusing phenomenon of the present invention, FIG. 2, FIG.
FIG. 6 is a plan view showing another shape of the pool in the wave-making device utilizing the focusing phenomenon of the present invention.
FIG. 5, FIG. 5 and FIG. 7 are sectional views of the same. In the drawing, 1 ... pool, 2 ... water storage tank, 3 ... pouring and draining means,
4 ... Support post, 5 ... Surveillance tower, 6 ... Net, 7 ... Wave block, 8 ... Wave plate, 9 ... Net, 10 ... Vacuum chamber, 11 ... Pump, 12 ... Connection pipe, 13 ... Air pressure adjusting valve, 14 ... Air pressure adjusting valve.

Claims (4)

[Claims] 1. A circular or fan-shaped pool, in which water is stored in advance, is provided on the outside of the peripheral edge of the pool in an annular or arc shape over the entire circumference, the lower end of which is open and submerged under the water surface of the pool. Water is stored in a water storage tank, and the water in the water storage tank is drained into the pool for a short period of time, and then, on the peripheral surface of the pool, toward the center of the pool. Forms a traveling circular or arc-shaped wave,
The waves are continuously interfered with each other as they travel toward the center of the pool, which causes a high wave to generate a focusing phenomenon. Thus, the water gradually grows on the water surface of the pool from the periphery of the pool to the center of the pool. A wave-making method using a focusing phenomenon, which is characterized by artificially generating a wave that changes. 2. A storage tank having a circular cross section, which is provided at one elliptic focal point in an elliptical pool in which water is stored in advance and whose lower end is open and is submerged below the water surface of the pool. Water in the water storage tank, and then the water in the water storage tank is drained into the pool for a short time, on the water surface of the peripheral edge of the water storage tank, from the elliptical focus position of the pool toward the peripheral edge. A focusing phenomenon is generated, in which high waves are generated by forming a wave that travels and reflects at the peripheral edge and continuously interferes with the wave as it advances to the other elliptical focal point of the pool, and thus the surface of the pool water is generated. In addition, a wave-making method using a focusing phenomenon, characterized in that a wave that gradually grows and becomes larger as it progresses from the peripheral portion to the central portion of the pool is artificially generated. 3. A circular or fan-shaped pool, an annular or arcuate water storage tank provided on the outer periphery of the pool over the entire circumference thereof, and the water storage tank,
It comprises a pouring and draining means for pouring and draining water in the pool, the lower end of the water storage tank is opened and is submerged below the water surface of the pool, and the upper end thereof appears above the water surface of the pool. The water in the water storage tank is drained into the pool for a short period of time, and the waves traveling toward the center of the pool are continuously interfered with each other to generate a high-frequency focusing phenomenon. A wave-making device that utilizes the focusing phenomenon. 4. An elliptical pool, a water tank having a circular cross section provided at one elliptic focal point in the pool, and a water tank for pouring and draining water in the pool to and from the water tank. The drainage means is provided, the lower end of the water storage tank is opened and submerged below the water surface of the pool, and the upper end of the water storage tank is exposed above the water surface of the pool. Generating a focusing phenomenon in which high waves are generated by continuously interfering waves that are drained within a short time, travel from the elliptical focal point position of the pool toward the peripheral edge and are reflected at the peripheral edge. A wave-making device that utilizes the focusing phenomenon.