JPH0714350U - Wave making device - Google Patents

Abstract

(57) [Summary] [Object] To provide a wave forming device capable of forming a wave having a desired shape with good performance. [Composition] The airtight chamber 2 communicates with the pool 1 at its lower part, and the air in the pool 1 is discharged to the chamber 2 by the vacuum pump 3 via the suction pipe 4 and the exhaust valve 5. Suck up. When the water level in the chamber 2 reaches the set water level, the exhaust valve 5 is closed and the suction is finished. Next, the air supply valve 7 is opened by the signal of the control device 9, the outside air is introduced into the chamber 2, the sucked water is dropped, and the pool 1 is made to perform wave formation. Reference numeral 11 is a water level detector, the output of which is input to the control device 9. Water level detector 1
The signal of No. 1 detects the falling velocity of water in the chamber 2, and adjusts the opening degree of the air supply valve 7 via the control device 9 so that this value becomes a velocity suitable for wave making. The air supply valve 7 is closed so as to minimize the deviation between the water level and the water purification surface of the pool.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wave making device for a pool in a game facility, an experimental facility, or the like.

[0002]

[Prior art]

 A conventional wave making device will be described with reference to FIG. The airtight chamber 2 communicates with the pool 1 at its lower part, and the vacuum pump 3 evacuates the air in the chamber 2 via the suction pipe 4 and the exhaust valve 5, and sucks the water in the pool 1 into the chamber 2. 6 is a silencer. At this time, the pressure in the chamber 2 is proportional to the water head difference between the still water surface of the pool and the water surface in the chamber, so the water level in the chamber 2 is detected by the signal from the pressure detector 10. When the water level in the chamber 2 reaches the set water level, the exhaust valve 5 is closed and suction is completed. At the same time, the no-load valve 8 is opened to let the outside air flow into the suction pipe 4 and prevent an excessive load from being applied to the vacuum pump 3.

Next, the air supply valve 7 is opened by a signal from the control device 9 to introduce the outside air into the chamber 2, and the sucked water is dropped to cause the pool 1 to perform wave formation. In the conventional wave making device, since the water level in the chamber 2 is detected by the pressure (vacuum pressure) in the upper space of the water surface in the chamber 2, the air supply valve is opened during the wave making and the pressure in the upper space is kept in the chamber. If it is not related to the water level, the water level in the chamber cannot be detected and control will be incomplete.

Therefore, there is a possibility that the wave-making performance is restricted by the fluctuation of the water level in the chamber and the reliability of the wave-making device is impaired. Also, immediately after wave formation, the water level in the chamber fluctuates up and down, resulting in an unspecified deviation between the water level in the chamber and the still water level of the pool after the air supply valve is closed, which causes a problem in control.

[0005]

[Problems to be solved by the device]

 The present invention provides a high-performance wave-making device that controls the vertical movement of the water level in the chamber to adjust the shape of the wave and minimizes the deviation between the water level in the chamber and the still water level of the pool after wave-making. The challenge is to provide.

[0006]

[Means for Solving the Problems]

 The present invention has a pool and an airtight chamber which is provided at one end of the pool so as to communicate below the surface of the water, and the air in the chamber is exhausted by a vacuum pump into the chamber. In order to solve the above-mentioned problem in the wave-making device in which the water is sucked and then dropped to make waves in the pool, the following two means are combined.

(1) A water level detector is provided so that the chamber water level can be detected even when the air supply valve is opened and the chamber water surface upper space is no longer related to the chamber water level.

(2) The air supply valve is operated through the control device by the signal of the detector to control the deviation between the water level in the chamber and the still water level of the pool after the wave formation to be small.

That is, in the wave making device according to the present invention, an exhaust valve for controlling the exhaust of the air in the chamber, an air supply valve for controlling the intake of outside air into the chamber, and a pressure in the upper space of the chamber. A pressure detector that detects the water level, a water level detector that detects the water level in the chamber regardless of the pressure in the upper space of the chamber, and a signal from the pressure detector that opens and closes the exhaust valve and the air supply valve. At the same time, a control device that adjusts the opening of the air supply valve so that the water level change in the chamber detected by the water level detector becomes a predetermined value is adopted.

[0010]

[Action]

 Since the wave making device according to the present invention adopts the above-mentioned configuration, the water level detector can detect the water level in the chamber after wave making (the air supply valve is opened), and the control device can detect the water level based on the detected water level. Since the opening of the air supply valve can be adjusted to minimize the deviation between the water level in the chamber and the still water level of the pool after wave generation, the performance of the wave generator can be improved.

Further, since the water level detector for detecting the water level in the chamber irrespective of the pressure in the upper space of the chamber is provided, there is a correspondence between the water suction level and the suction time of the water into the wave making chamber. In addition to improving the control reliability, the detected water level is input to the control device and the opening of the air supply valve is adjusted to control the falling speed of water in the chamber during wave formation. The vertical fluctuation of the water level in the chamber can be controlled and the wave shape can be adjusted.

[0012]

【Example】

 Hereinafter, the wave-making device according to the present invention will be described in detail with reference to the embodiment shown in FIG. In FIG. 1, the same components as those of the device shown in FIG. 2 are designated by the same reference numerals, and the duplicated description thereof will be omitted. In the wave making device shown in FIG. 1, a water level detector 11 for detecting the water level in the chamber 2 is provided. The water level detection device 11 can detect the water level in the chamber 2 even if the air supply valve 7 is opened and the pressure in the upper space of the chamber 2 is not related to the water level in the chamber. The output of the water level detector 11 is input to the control device 9.

Therefore, after sucking the water in the pool 1 into the chamber 2, the air supply valve 7 is opened by the signal of the control device 9 to introduce the outside air into the chamber 2 and the sucked water is dropped to make the water in the pool 1. When the wave is generated, the water drop velocity in the chamber 2 is detected by the signal from the water level detector 11, and the value of the water drop in the chamber 2 is controlled by the controller 9 so that this value becomes a speed suitable for wave formation. While adjusting the opening, the air supply valve 7 is closed so that the deviation between the water level in the chamber 2 and the still water surface of the pool is minimized. In this way, the falling speed of water in the chamber during wave formation can be controlled to control the vertical fluctuation of the water level in the chamber, the shape of the wave can be adjusted, and the performance of the wave forming device can be improved.

[0014]

[Effect of device]

 As explained above, according to the wave making device of the present invention, the following effects can be obtained.

(1) In the conventional wave making device, when the air supply valve is opened, the pressure in the chamber upper space and the water level in the chamber have no relation to each other. Therefore, the pressure detector cannot detect the water level in the chamber. In the device of the present invention, the water level in the chamber can be detected by the water level detector, so the deviation between the water level in the chamber and the still water level of the pool after wave formation can be controlled to the minimum, and the performance can be improved.

(2) The falling speed of water in the chamber during wave formation is detected, the opening speed of the air supply valve is adjusted to control the falling speed of water in the chamber, and the vertical fluctuation of the water level in the chamber is detected. Can be suppressed and the wave shape can be adjusted.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a partial cross-section of a wave making device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a conventional wave making device in a partial cross section.

[Explanation of symbols]

 1 pool 2 chamber 3 vacuum pump 4 suction pipe 5 exhaust valve 6 silencer 7 air supply valve 8 no-load valve 9 control device 10 pressure detector 11 water level detector

Claims (1)

[Scope of utility model registration request] 1. A pool and an airtight chamber which is provided at one end of the pool so as to communicate with below the water surface of the pool,
Controlling the discharge of air in the chamber in a wave-making device that discharges the air in the chamber with a vacuum pump, sucks the water in the pool into the chamber, and then drops it to make waves in the pool Exhaust valve, an air supply valve that controls the intake of outside air into the chamber, a pressure detector that detects the pressure of the upper space in the chamber, and the same chamber regardless of the pressure of the upper space of the chamber. A water level detector for detecting the water level in the chamber, and the exhaust valve and the air supply valve are opened / closed by the signals of the pressure detector, and the water level change in the chamber detected by the water level detector becomes a predetermined value. And a control device for adjusting the opening of the air supply valve.