The present application relates to wave generators, such as, for example, wave generators for making waves in pools for recreational purposes.
Wave generators are often used for recreational purposes. Wave generators create one or more waves in a pool or the like, and people typically either play in the waves or use the waves for aquatic sports such as board sports. Aquatic board sports, such as surfing and boogie boarding, require that the waves be rideable. Enthusiasts in these types of sports often use wave generators for competition, practice and entertainment.
Existing wave generators typically use wave generating chambers to produce a wave that travels perpendicular to the wave generating apparatus. The wave is produced when the wave generating chambers (either one chamber or multiple chambers) are all activated simultaneously, resulting in the water being pushed away from the wave generating chambers, which then travels at an angle perpendicular to the chambers. The wave then travels away from the chamber until it reaches the opposite end of the pool, breaking at some point between the wave generating chamber and the opposite end of the pool. The waves that are created from these chambers, however, can only be ridden for only a short period of time and distance because after the wave is created, it begins to decrease in amplitude and quickly becomes unrideable. Japan App. No. 04-037314 (JPO Publication No. 05-202626) discloses a pool that produce waves that travel in a perpendicular direction from one side toward the other side of the pool. The side walls of the pool are in a fan shape to allow persons to ride the wave longer and avoid hitting the wall. This apparatus, however, only produces waves that travel perpendicularly away from generating apparatus until the wave reaches the opposite end of the pool. This apparatus attempts to provide for a longer ride on the wave by simply angling the walls in a fan shape, but does not compensate for the wave losing amplitude and strength.
The ring wave type of pool (U.S. Pat. No. 6,920,651) discloses an annular or “doughnut” shaped pool that contains wave generating paddles on the outer wall of the pool that push the water radially inward, from a deep outer diameter region to a shallow inner diameter region. The paddles actuate in a synchronous manner, one after the other, causing the water to circulate around the annulus. This synchronized pushing of the water inward toward a shallow region would create a small, ever-turning wave that follows the circular path of the pool. The waves would be small because paddles, as shown in
What is needed is an apparatus that overcomes the shortcomings of the prior art, including providing a rideable wave that compensates for the wave losing amplitude and strength as it moves across the pool.
Provided is a new and improved wave generator apparatus and method that in various example embodiments may include sequenced chambers adapted to create a rideable wave that travels in a direction that is not perpendicular to the wave generating apparatus such that the wave strength continues to be replenished by the wave generator as it moves across the pool. In one example embodiment, a wave generating apparatus has a pool that holds water, the pool having a first end, second end, two sides, and a floor. The first end of the pool may contain a plurality of wave generating chambers. A controller may be connected to the chambers. The controller operation may actuate the first chamber in the plurality to release water into the pool. After a delay, the controller may actuate the second chamber to release water into the pool, and after a delay, the controller may actuate a third chamber to release water into the pool. This process may continue and repeat with each chamber in the plurality. The wave generator apparatus may be adapted to create waves where the peak of the wave travels in a direction that is not substantially perpendicular to the ends of the pool or the chambers.
In various example embodiments the delay between the chamber actuations may be a fraction of the chamber period, such as approximately 0.10 to 0.75 of the chamber period. The fraction can be adjusted to modify the travel direction and the amplitude of the wave peak.
The amount of delay in the sequence may determine the trajectory of the wave. When the sequence uses no delay between activating chambers, the wave may travel in a perpendicular direction away from the chambers. An increase in the delay may result in the peak traveling more towards the side of the pool. The delay sequence can produce a wave peak that travels not substantially perpendicular to the chambers until it reaches the side. Such a wave can be ridden. The activation of each chamber in sequence causes the peak of the wave to increase in size until it reaches its maximum size. The peak amplitude of the wave created with sequencing may be roughly twice that of the amplitude of a wave created without sequencing that travels perpendicular to the chambers.
Other aspects of the invention are disclosed herein as discussed in the following Drawings and Detailed Description.
The invention can be better understood with reference to the following figures. The components within the figures are not necessarily to scale, emphasis instead being placed on clearly illustrating example aspects of the invention. In the figures, like reference numerals designate corresponding parts throughout the different views. It may be understood that certain components and details may not appear in the figures to assist in more clearly describing the invention.
Following is a non-limiting written description of example embodiments illustrating various aspects of the invention. These examples are provided to enable a person of ordinary skill in the art to practice the full scope of the invention without having to engage in an undue amount of experimentation. As may be apparent to persons skilled in the art, further modifications and adaptations can be made without departing from the spirit and scope of the invention, which is limited only by the claims.
The apparatus disclosed herein in various example embodiments provides a sequenced chamber wave generating apparatus that may be adapted for use with aquatic board sports or any other suitable purpose, such as miniature modeling of wave formations. The apparatus overcomes the deficiencies in the prior art by creating rideable waves that travel in a direction that is not perpendicular to the wave generating apparatus such that the wave strength continues to be replenished as the waves move across the pool.
The pool 50 may be rectangular shaped and holds the body of water 52. The pool 50 has a first end 58, a second end 60, two sides 44, 46, and a floor 36. The first end 58 is comprised of a plurality of chambers 54 adjacent to one another and the second end 60 is at the opposite end of the pool where the beach 42 is located. The two sides 44, 46 are at opposite ends of the pool 50. The first end 58, second end 60, and two sides 44, 46 act as walls for to pool 50 to contain the body of water 52 along with the floor 36 that is under the body of water 52. The body of water 52 rests in the pool 50 and is in a still state until the chambers 54 begin to actuate in sequence and create a wave using the body of water 52 in the pool 50.
The chambers 54 may be connected to an air supply through inlet valve 26 located close to the upper end of the chamber back wall 18 and is also connected to a vent valve 28 in the upper wall 32, which may be connected to a vacuum pump. The floor 36 of the pool may have a first, upwardly inclined portion 38 extending from passageway 30 away from the wave reflecting wall 22, a generally flat portion 40, and an upwardly inclined portion or beach 42 at the opposite, second end 60 of the pool 50.
In operation of this example embodiment, the chamber 54 is first filled with air through valve 26, thereby displacing water into the pool 50. Valve 26 is then closed and the chamber air is vented suddenly through vent valve 28, causing the water 52 to flow from the pool 50 through passageway 30 into the now empty space 56 in the chamber 54. The water level in pool drops suddenly, creating a depression or trough in the water that reflects against the back or wave reflecting wall 22 of the pool 50. This creates a circulating motion of the water, which is enhanced by the design of the back wall. The vent valve 28 in the air chamber is shut at the proper time to prevent immediate water resurgence back into the pool 50, which enhances the second trough behind the peak. The mechanical two-way valve 24 can also be used to prevent immediate resurgence. The water valve 24 may be closed during the initial air fill phase to create a larger air volume in the chamber which, when released, creates a larger depression in the pool. Alternatively, air valve 26 can rapidly supply pressurized air to the chamber after the chamber is filled with water to push water out and amplify the wave peak. This process of pushing water out of the chamber and into the pool is known as releasing water. Alternatively, vent valve 28 may be connected to a vacuum source such as a vacuum pump, or may be a vent outlet connected via suitable valving either to atmosphere or to a vacuum source.
As illustrated schematically in
The wave generator apparatus has the ability to create waves where the peak of the wave travels in a direction that is not substantially perpendicular to the ends of the pool and the chambers, as illustrated in
To create a wave where the peak travels in a direction that is not substantially perpendicular to the chambers 54, the controller 62 may actuate the chambers 54 in a sequence with a delay between actuating each chamber, as described above. The delay is approximately a fraction of the chamber period. In the present example embodiment, sixteen chambers 1-16 are used to produce a wave that can be ridden and the peak travels not substantially perpendicular to the chambers 54 in direction A.
The sequence starts with chamber 1 and continues sequentially (in lowest to highest numerical order of the chambers) down the plurality of chambers, which determines the direction of the wave. The wave breaks nearly right out of the chamber, and the break of the wave allows the peak to travel in a direction not substantially perpendicular to the chambers. Thus, a rider is able to ride the wave over much of the pool's water surface area. The peak continues until it reaches the side 44 of the pool 50. Although the path that the peak of the wave travels is not exactly parallel to the chambers 54, the pool may be constructed such that the peak may reach the side wall 44 before the peak could reach the opposite, beach end 42 of the pool. As each chamber actuates, the apparatus replenishes the wave to continue its momentum such that the wave can continue to be ridden.
Immediately after a chamber 54 is activated, it creates a trough in the body of water 52 by allowing the water to enter the chamber space 56. The trough is created outside of the chamber 54 where the water entered the chamber 54. When the chamber 54 pushes or releases the water out to create a wave, the water flows into the area previously vacated and is now a trough. The sequencing allows the wave to travel not substantially perpendicular to the chamber 54 and break to create a wave.
The fraction of delay between actuating each chamber may be proportional to the chamber period. The chamber period is the time it takes a chamber to release the water and refill to the predetermined level. To refill, the chamber 54 may permit a fixed amount of water, if any, to reenter the chamber 54. When a chamber completes its period, the chamber is prepared to actuate again. To create a peak that travels not substantially perpendicular to the chambers 54, in A direction, the controller operation may actuate each chamber, using a delay, in sequenced fashion. For example, while chamber 1 is in the wave production portion of its period, the controller 62 actuates chamber 2 and it begins its period. This sequence is repeated with each chamber using the same delay, with the controller 62 operating the sequencing.
The controller operates the sequenced fashion or sequencing, which comprises each chamber in the plurality actuating after a delay and completing a chamber period. The fraction of the chamber period that is used as the delay by the controller 62 is approximately between 0.75 and 0.10. The amount of delay in the sequence can be adjusted within this range to adjust the amplitude of the wave and the direction the peak may travel. Also, the delay may vary between adjacent chambers.
By way of example only, a delay of 0.25 can create a wave traveling in direction A as illustrated in
When a chamber 54 is half of the way completed with the process of pushing out the water or air needed to create a wave (i.e., 0.25 of the entire chamber period), the subsequent chamber can activate in the sequence. This allows the wave to continue in the desired direction A. For example, in the example embodiment in
The amplitude or height of the peak of the wave created generally depends on the size of the wave generating apparatus. However, using this sequencing method, the peak traveling in direction A has an amplitude of nearly twice that of the peak traveling perpendicular to the chambers 54 in direction C. The peak of the wave may increase as it builds through the first few chambers in the sequence until it reaches its maximum height. For example, using the example embodiment in
For example, using a small version of the wave generating apparatus with only nine chamber 54 (as illustrated in
As illustrated in
The direction of the peak is determined by the delay in the sequencing of the chambers.
An increase in the delay sequence may cause the peak to travel in a direction that is more angled towards side 44. For example, a shortened delay in the sequence would result in the peak traveling in direction B, which flows more towards side 44. When increasing the delay even more, the peak can travel not substantially perpendicular to the chambers 54 towards side 44 in direction A.
As illustrated in
The above description of the disclosed example embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these example embodiments will be readily apparent to those skilled in the art, and the generic principles described herein can be applied to other example embodiments without departing from the spirit or scope of the invention. Thus, it is to be understood that the description and drawings presented herein represent a presently preferred example embodiment of the invention and are therefore representative of the subject matter which is broadly contemplated by the present invention. It is further understood that the scope of the present invention fully encompasses other example embodiments that may become obvious to those skilled in the art and that the scope of the present invention is accordingly limited by nothing other than the appended claims.
Number | Name | Date | Kind |
---|---|---|---|
2406413 | Test | Aug 1946 | A |
3105456 | Gongwer | Oct 1963 | A |
3350724 | Leigh | Jul 1964 | A |
3473334 | Dexter | Oct 1969 | A |
3577570 | Vincent | May 1971 | A |
3629877 | Schuster | Dec 1971 | A |
4062192 | Biewer | Dec 1977 | A |
4276664 | Baker | Jul 1981 | A |
4467483 | Bastenhof | Aug 1984 | A |
4515500 | Bastenhof | May 1985 | A |
4522535 | Bastenhof | Jun 1985 | A |
4558474 | Bastenhof | Dec 1985 | A |
4692949 | Dunn | Sep 1987 | A |
4730355 | Kreinbihl et al. | Mar 1988 | A |
4730807 | Miller | Mar 1988 | A |
4812077 | Raike | Mar 1989 | A |
4979244 | Bastenhof | Dec 1990 | A |
4999860 | Chutter et al. | Mar 1991 | A |
5098222 | Robinson | Mar 1992 | A |
5186578 | Perslow | Feb 1993 | A |
RE34407 | Frenzl | Oct 1993 | E |
5342145 | Cohen | Aug 1994 | A |
5405250 | Vowles | Apr 1995 | A |
5535702 | Idbeis | Jul 1996 | A |
5621925 | Bastenhof | Apr 1997 | A |
6475095 | Henry | Nov 2002 | B1 |
6729799 | Raike | May 2004 | B1 |
6738992 | Lochtefeld | May 2004 | B2 |
6912738 | Black | Jul 2005 | B2 |
6920651 | Roberts | Jul 2005 | B2 |
7666104 | Lochtefeld | Feb 2010 | B2 |
7815396 | McFarland | Oct 2010 | B2 |
Number | Date | Country |
---|---|---|
05-202626 | Aug 1993 | JP |