JP2949649B2 - Wave making equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave maker installed in a pool, especially a leisure pool.

[0002]

2. Description of the Related Art Conventionally, a wave-making apparatus used in a leisure pool has a kind as shown in FIG. That is, (A) flap type,
(B) piston type, (C) plunger type, (D) pneumatic type, (E) water level difference type.

[0003] In the flap type shown in (A), a swingable flat plate 51 is oscillated by a mechanism such as a crank mechanism 52 that converts rotational motion into reciprocating motion, and a wave 53 is generated in a pool. What happens. (B) piston type,
Also in the plunger type (C), the wave bodies 61 and 62 are reciprocated by the crank mechanism 52 to generate waves 53. Further, in the pneumatic method (D), the air from the blower 55 flows into and out of the air chamber 54 installed at one end of the pool, causing a water level difference between the air chamber and the pool side to generate a wave 53. Normally, a control valve 56, an exhaust valve 57, and the like are used to control the air.
The water level difference equation of (E) is a water tank 58 installed at one end of the pool.
The pump 59 is used to store water for a certain period of time, and the shutoff valve 60 is opened at a stretch to drop water, and the impact generates a wave 53 in the pool.

[0004] The conventional wave making device has the following problems. That is, in each of the models (A), (B), and (C), a wave-making portion having a certain width at the pool end is required, and therefore, the shape of the pool is restricted. In the models (D) and (E), an air tank 5 made of concrete or the like is provided at the pool end.
4 and a water tank 58 are required, and the equipment and the foundation become large-scale. Therefore, it cannot be easily installed in the existing pool. Further, each of the types (A), (B) and (C) has a complicated mechanical structure, is relatively expensive, and requires maintenance. Further, each of the models (A), (B), (C) and (E) cannot be installed at the center of the circular pool due to its structure. The model of (D) can be installed at the center of the circular pool, but in this case, an island-like structure including a blower, piping, etc. is installed at the center of the pool. It takes. In addition, since the (D) type has a loud noise from the blower, it is necessary to completely install soundproofing equipment if it is installed at the center. In the types shown in FIG. 5, a straight wave is generated in each of (A) to (E), and an arc-shaped wave or a curved wave cannot be formed. Therefore, in order to give directionality to the waves or to provide a variety of waveforms, it is necessary to install multiple units that are finely divided in the width direction or to control the operation cycle in a complicated manner, which is very expensive. And it is difficult to make it portable, so it cannot be installed at any position in the pool.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned disadvantages of the prior art and to provide a wave-making apparatus capable of generating a variety of waves at low equipment and maintenance costs.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a cylinder having a central axis in a vertical direction is eccentric from a central axis to generate a spiral wave in a pool, and the cylinder is eccentric rotating parallel to the central axis. A mechanism for supporting the shaft and rotating the eccentric rotation shaft is provided.

[0007]

[Function] If a cylinder is rotated around an eccentric rotation axis in water, the volume of the cylinder changes sequentially in the rotation direction, thereby giving a change in pressure to surrounding water, so that waves are sequentially generated in the rotation direction. . The wave travels radially and spirals as a whole.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of FIGS. 1 to 3, reference numeral 11 denotes a cylinder, which rotates about an eccentric rotary shaft 13 eccentric from the center axis 12 by δ. The inside of the cylinder 11 may be hollow, and weight or water may be put inside the hollow to cancel the buoyancy. This cylinder 11 is housed in an outer frame 19 installed in a pool 21, and the eccentric rotation shaft 13 of the cylinder 11 is
The eccentric rotary shaft 1 is supported by bearings 14a, 14b attached to upper and lower partition plates 18a, 18b held in an outer frame 19.
The upper end of 3 is a partition plate 18a via bevel gears 15a and 15b.
The cover 17 is connected to a motor 17 having a speed reducer 16 supported on the outer frame 19 and is covered with a cover 20. The water-permeable safety cover 2 such as a grating or a perforated plate is provided around the outer frame 19.
No. 3 has been installed to prevent danger. Motor 1
Although not shown, the number 7 can be arbitrarily set by a control device such as an inverter or a thyristor leonard. With the above configuration, the motor 17
When the rotation speed is rotated to an arbitrary value according to the set frequency, the cylinder 11 rotates and rotates while swinging left and right by the amount of eccentricity δ. Propagating toward FIG. 3 is a plan view showing the state of propagation of the generated wave. The cylinder 11 rotates around a rotation axis O ′ eccentric by δ from the center axis O. Assuming that the rotation direction is indicated by reference numeral 26 and the direction of the arrow is indicated, the place where the cylinder swings to the outermost side always becomes a wave peak, and a wave peak is formed as shown by a dotted line 25. That is, the peak of the wave becomes spiral, and its traveling direction is a radial direction as indicated by an arrow 27. A valley line is formed between the peak and the next peak, which naturally also has a spiral shape.

FIG. 4 shows another embodiment of the present invention.
1 has a shape in which the upper surface is obliquely cut. The internal structure is the same as that of the embodiment shown in FIGS. The obliquely cut cylinder 31 has an eccentric rotary shaft 33 eccentric by δ from the central axis 32. When the eccentric rotary shaft is rotated in the direction of the arrow 26 around the eccentric rotary shaft, the high side of the obliquely cut cylinder becomes a wave peak. Then, it becomes spiral. The change in volume of the underwater portion due to the rotation is larger than in the case of the above-described embodiment, so that a larger wave is generated.

[0010]

According to the present invention, a spiral wave which could not be generated at all conventionally can be easily obtained, and the entertainment of the leisure pool can be improved. It has a simple structure, is less likely to break down, is easy to maintain and inspect, is easy to move, and can be installed in existing pools without modification.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view.

FIG. 2 is a plan view of a cylinder.

FIG. 3 is a plan view showing a wave-making state.

FIG. 4 is a plan view of a cylinder showing another embodiment.

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Rotating cylinder 12, 32 Cylindrical central axis 13, 33 Cylindrical rotating axis 17 Motor 19 Outer frame 20 Cover 22 Wave 31 Top oblique cylinder

Claims (2)

(57) [Claims] 1. A cylinder having a central axis in a vertical direction is supported by a rotating shaft that is eccentric from the central axis and parallel to the central axis in order to generate a spiral wave in the pool, and connects the rotating shaft to a rotating mechanism. Wave making device. 2. A cylinder having a central axis in a vertical direction and having an upper surface cut obliquely is supported by a rotating shaft eccentric from the central axis and parallel to the central axis, and the rotating shaft is connected to a rotating mechanism. 2. The wave making device according to 1.