WO1996027319A1 - Wave generator for pool or tank - Google Patents

Wave generator for pool or tank Download PDF

Info

Publication number
WO1996027319A1
WO1996027319A1 PCT/US1996/002927 US9602927W WO9627319A1 WO 1996027319 A1 WO1996027319 A1 WO 1996027319A1 US 9602927 W US9602927 W US 9602927W WO 9627319 A1 WO9627319 A1 WO 9627319A1
Authority
WO
WIPO (PCT)
Prior art keywords
pool
pipe
channels
water tank
piston
Prior art date
Application number
PCT/US1996/002927
Other languages
French (fr)
Inventor
Dirk Bastenhof
Original Assignee
Ellis, Kenneth
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ellis, Kenneth filed Critical Ellis, Kenneth
Priority to AU50923/96A priority Critical patent/AU704520B2/en
Priority to JP8526988A priority patent/JPH11501094A/en
Publication of WO1996027319A1 publication Critical patent/WO1996027319A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/0006—Devices for producing waves in swimming pools

Definitions

  • the invention relates to a pool or water tank provided with means for generating waves.
  • One of said methods comprises supplying compressed air in turn to chambers which are closed at the top and at the bottom protrude into the water in the pool or tank. If the compressed air is introduced into the various chambers at the natural frequency of the pool, this method requires relatively little energy, but the major drawback is that the tank or swimming pool has to have an adapted, relatively expensive design.
  • a ball which has a weight which is movable up and down therein floats in the middle of the tank.
  • a ball of this type takes up a relatively large amount of space and must be able to be suspended from the ceiling by a hoist construction.
  • a long electric cable to the ball is needed underwater, the length of said cable being subject to regulations.
  • the aim of the invention is to overcome the drawbacks of known pools or water tanks which have wave mechanisms and to provide a pool or water tank, indicated in the preamble, for which the means for generating waves are simple and relatively inexpensive and can be installed in existing pools or tanks without special structural facilities (apart from possibly raising the height of the walls of the pool or tank). Moreover, the wave facilities must not give rise to obstacles for swimmers and there must be no cables or leads present in the pool or tank.
  • the pool or water tank provided with means for generating waves is characterised in that said means comprise one or more pipes, each of which is connected, at least at both ends, via a hole in the wall of the pool or tank, to the pool or tank, wherein a piston or disc which essentially closes off the cross-section of the pipe is fitted in one section of each of the pipes and a power source is present in order to move the piston or disc backwards and forwards.
  • DE-A-28H623 describes a swimming pool wherein a niche filled with water adjoins one of the sides of the swimming pool, is in open communication with the swimming pool and is divided into three chambers by means of two partitions.
  • the two partitions are each connected by means of a rod to a piston which is movable in a hydraulic cylinder. Waves can be generated in the swimming pool by moving the two partitions by means of the pistons.
  • This construction requires expensive structural facilities and is not suitable for adding to an existing swimming pool as a recreational element in a simple manner.
  • the length of the pipes corresponds to at most half of a resonance wavelength of the water in the pool or tank.
  • each pipe will be provided on either side of the central section, in which said piston or disc is movable, with two or more channels connected to a hole in the wall of the swimming pool.
  • the cross-sectional area of the channels will have to be greatest at locations where the amplitude of the wave is greatest, and vice versa. Therefore, the cross-sectional area of the channels will be greatest at the ends of a pipe and that of the channels at the side of said means will be smallest and the cross-sectional area of the channels will decrease from the largest channel to the smallest channel. If various pipes are used, the power sources will operate in phase with one another but in opposing directions of flow.
  • the invention also relates to a wave installation to be used in the abovementioned pool or water tank.
  • Figure 1 shows a top view of part of the pool or water tank
  • Figure 2 shows a side view of the pool or water tank according to Fig. 1;
  • Figure 3 shows a cross-section of a possible connection of an orifice of a pipe opening into an opening in the side wall of the pool or tank.
  • the walls of the wave pool or tank shown are indicated by 1.
  • Two wave installations each consisting of a pipe 2 having a central section 3 and two connecting sections 4 fitted on either side thereof, are installed on one side wall.
  • a piston or disc 5. which essentially closes off the cross- sectional surface area and can be moved backwards and forwards by means of a piston rod of a pneumatic cylinder 6, is fitted inside the central section.
  • the connecting sections 4 each have three inlet and outlet channels 7a, 7b, 7c which are connected by flange connections to openings 8a, 8b, 8c in the side wall of the pool or tank.
  • Figure 3 shows the flange connection between a channel 7a and the side wall of the pool or tank.
  • a pipe 9 is fixed by means of resin in the opening 8a to provide a seal.
  • Said pipe has a flange 10, which is fixed by means of bolts 11 to a flange 12 of the channel 7a.
  • the length of a pipe 2 corresponds to at most half the resonance wavelength of the pool or tank.
  • the two pipes shown generate waves which have twice a half resonance wavelength.
  • the one pipe operates in the same phase but in the reverse direction of flow to the preceding pipe.
  • the shape of the waves is shown by a broken line in Figure 2.
  • the channels 7 and the openings 8a at the ends of a pipe 2 have a larger cross-section than the channels 7b and openings 8b, which, in turn, have a larger cross-section than the channels 7c and openings 8c.
  • the size of the cross-section follows the size of the wave amplitude.
  • the first impulse will take a great deal of power, but as the wavelength of the generated wave follows the resonance wavelength of the pool or water tank, it becomes increasingly easier.
  • the installation according to the invention has considerable advantages. It is easy to install. No structural facilities are needed for wave generation. It may be necessary to raise the height of the sides of the pool or tank, or the water level could be lowered.
  • the apparatus can be fixed to the outside of existing pools or tanks by simply drilling a few holes in the wall of the pool or tank. The apparatus does not constitute any obstacles for the swimmer and there are no cables or leads through the area. It is very suitable for use in tanks containing mammals or fish and produces no noise.

Abstract

A pool or water tank is provided with means for generating waves. Said means comprise one or more pipes (2), each of which is connected, at least at both ends, via a hole (8) in the wall of the pool or tank, to the pool or tank, wherein a piston or disc (5) which essentially closes off the cross section of the pipe is fitted in one section of each of the pipes and a power source (6) is present in order to move the piston or disc backwards and forwards.

Description

Wave generator for pool or tank
The invention relates to a pool or water tank provided with means for generating waves.
Various methods are known for generating waves in swimming pools or water tanks for fish or mammals. One of said methods comprises supplying compressed air in turn to chambers which are closed at the top and at the bottom protrude into the water in the pool or tank. If the compressed air is introduced into the various chambers at the natural frequency of the pool, this method requires relatively little energy, but the major drawback is that the tank or swimming pool has to have an adapted, relatively expensive design.
In the case of a second known method, a ball which has a weight which is movable up and down therein floats in the middle of the tank. A ball of this type takes up a relatively large amount of space and must be able to be suspended from the ceiling by a hoist construction. Moreover, a long electric cable to the ball is needed underwater, the length of said cable being subject to regulations. Furthermore, it is known to move part of the floor of a swimming pool. This involves an expensive structural facility which is usually unsuitable for existing pools or tanks.
The aim of the invention is to overcome the drawbacks of known pools or water tanks which have wave mechanisms and to provide a pool or water tank, indicated in the preamble, for which the means for generating waves are simple and relatively inexpensive and can be installed in existing pools or tanks without special structural facilities (apart from possibly raising the height of the walls of the pool or tank). Moreover, the wave facilities must not give rise to obstacles for swimmers and there must be no cables or leads present in the pool or tank.
According to the invention, the pool or water tank provided with means for generating waves is characterised in that said means comprise one or more pipes, each of which is connected, at least at both ends, via a hole in the wall of the pool or tank, to the pool or tank, wherein a piston or disc which essentially closes off the cross-section of the pipe is fitted in one section of each of the pipes and a power source is present in order to move the piston or disc backwards and forwards.
DE-A-28H623 describes a swimming pool wherein a niche filled with water adjoins one of the sides of the swimming pool, is in open communication with the swimming pool and is divided into three chambers by means of two partitions. The two partitions are each connected by means of a rod to a piston which is movable in a hydraulic cylinder. Waves can be generated in the swimming pool by moving the two partitions by means of the pistons. This construction requires expensive structural facilities and is not suitable for adding to an existing swimming pool as a recreational element in a simple manner.
Preferably, the length of the pipes corresponds to at most half of a resonance wavelength of the water in the pool or tank.
In practice, each pipe will be provided on either side of the central section, in which said piston or disc is movable, with two or more channels connected to a hole in the wall of the swimming pool.
The cross-sectional area of the channels will have to be greatest at locations where the amplitude of the wave is greatest, and vice versa. Therefore, the cross-sectional area of the channels will be greatest at the ends of a pipe and that of the channels at the side of said means will be smallest and the cross-sectional area of the channels will decrease from the largest channel to the smallest channel. If various pipes are used, the power sources will operate in phase with one another but in opposing directions of flow.
The invention also relates to a wave installation to be used in the abovementioned pool or water tank.
The invention will now be explained in more detail with reference to the figures.
Figure 1 shows a top view of part of the pool or water tank;
Figure 2 shows a side view of the pool or water tank according to Fig. 1; and
Figure 3 shows a cross-section of a possible connection of an orifice of a pipe opening into an opening in the side wall of the pool or tank.
The walls of the wave pool or tank shown are indicated by 1. Two wave installations, each consisting of a pipe 2 having a central section 3 and two connecting sections 4 fitted on either side thereof, are installed on one side wall. A piston or disc 5. which essentially closes off the cross- sectional surface area and can be moved backwards and forwards by means of a piston rod of a pneumatic cylinder 6, is fitted inside the central section. The connecting sections 4 each have three inlet and outlet channels 7a, 7b, 7c which are connected by flange connections to openings 8a, 8b, 8c in the side wall of the pool or tank.
Figure 3 shows the flange connection between a channel 7a and the side wall of the pool or tank. A pipe 9 is fixed by means of resin in the opening 8a to provide a seal. Said pipe has a flange 10, which is fixed by means of bolts 11 to a flange 12 of the channel 7a.
The length of a pipe 2 corresponds to at most half the resonance wavelength of the pool or tank. The two pipes shown generate waves which have twice a half resonance wavelength. The one pipe operates in the same phase but in the reverse direction of flow to the preceding pipe. The shape of the waves is shown by a broken line in Figure 2.
The channels 7 and the openings 8a at the ends of a pipe 2 have a larger cross-section than the channels 7b and openings 8b, which, in turn, have a larger cross-section than the channels 7c and openings 8c.
Consequently, the size of the cross-section follows the size of the wave amplitude.
Of course, the first impulse will take a great deal of power, but as the wavelength of the generated wave follows the resonance wavelength of the pool or water tank, it becomes increasingly easier.
The installation according to the invention has considerable advantages. It is easy to install. No structural facilities are needed for wave generation. It may be necessary to raise the height of the sides of the pool or tank, or the water level could be lowered. The apparatus can be fixed to the outside of existing pools or tanks by simply drilling a few holes in the wall of the pool or tank. The apparatus does not constitute any obstacles for the swimmer and there are no cables or leads through the area. It is very suitable for use in tanks containing mammals or fish and produces no noise.

Claims

Claims
1. Pool or water tank provided with means for generating waves, characterised in that said means comprise one or more pipes (2) , each of which is connected, at least at both ends, via a hole (8) in the wall of the pool or tank, to the pool or tank, wherein a piston or disc (5) which essentially closes off the cross-section of the pipe is fitted in one section of each of the pipes and a power source (6) is present in order to move the piston or disc backwards and forwards.
2. Pool or water tank according to Claim 1, characterised in that the length of the pipes (2) corresponds to at most half of a resonance wavelength of the water in the pool or tank.
3- Pool or water tank according to Claim 1 or 2, characterised in that each pipe (2) is provided on either side of the central section (3) . in which said piston or disc (5) is movable, with two or more channels (7a, 7b, 7c) connected to a hole (8a, 8b, 8c) in the wall of the swimming pool.
4. Pool or water tank according to Claim 3. characterised in that the cross-sectional area of the channels (7a) at the end of a pipe is the greatest and that of the channels (7c) at the side of said central section (3) is the smallest and any channels (7b) decrease in cross-sectional area from the largest channel to the smallest channel.
5. Pool or water tank according to one of the preceding claims, characterised in that if various pipes (2) are used, the power sources (6) operate in phase with one another but in opposing directions of flow.
6. Wave installation intended for the pool or water tank according to one of the preceding claims, characterised by a pipe (2) to be connected at both ends to a hole in the wall of a pool or water tank, which pipe has, in one section, a piston or disc (5) which essentially closes off the cross- section of the pipe, and a power source (6) in order to move the piston or disc backwards and forwards.
7. Wave installation according to Claim 6, characterised in that the pipe (2) is provided, on either side of a central section (3), in which the said piston or disc (5) is movable, with two or more channels (7a, 7b, 7c) to be connected to a hole (8a, 8b, 8c) in the wall of the pool or water tank.
8. Wave installation according to Claim 7. characterised in that the cross-sectional area of the channels (7a) at the ends of the pipe (2) is the greatest and that of the channels (7c) at the sides of said central section (3) is the smallest and any channels (7b) decrease in cross-sectional area from the largest channel to the smallest channel.
PCT/US1996/002927 1995-03-03 1996-03-04 Wave generator for pool or tank WO1996027319A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU50923/96A AU704520B2 (en) 1995-03-03 1996-03-04 Wave generator for pool or tank
JP8526988A JPH11501094A (en) 1995-03-03 1996-03-04 Wave maker in pool or tank

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/397,970 US5621925A (en) 1995-03-03 1995-03-03 Pool or water tank, such as a swimming pool, provided with means generating waves
US08/397,970 1995-03-03

Publications (1)

Publication Number Publication Date
WO1996027319A1 true WO1996027319A1 (en) 1996-09-12

Family

ID=23573456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/002927 WO1996027319A1 (en) 1995-03-03 1996-03-04 Wave generator for pool or tank

Country Status (5)

Country Link
US (1) US5621925A (en)
JP (1) JPH11501094A (en)
CN (1) CN1183711A (en)
AU (1) AU704520B2 (en)
WO (1) WO1996027319A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11534672B2 (en) 2016-11-08 2022-12-27 Ka'ana Wave Company Inc. Wave producing method and apparatus

Families Citing this family (19)

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AU8520791A (en) * 1990-09-04 1992-03-30 Thomas J. Lochtefeld Water ride attraction
BE1011083A6 (en) 1997-04-03 1999-04-06 Inan Mehmet Zahit Wave generator for liquids.
DE102004023708A1 (en) * 2004-05-11 2005-12-15 Tunze Aquarientechnik Gmbh Method and device for generating waves in an aquarium container
US8434966B1 (en) * 2012-03-03 2013-05-07 Bruce McFarland Sequenced chamber wave generator apparatus and method
US9279263B2 (en) 2012-03-03 2016-03-08 Bruce McFarland Sequenced chamber wave generator apparatus and method
US9550127B2 (en) 2013-03-21 2017-01-24 Thomas J. Lochtefeld Padded grate drainage system for water rides
US11090573B2 (en) 2013-10-30 2021-08-17 Whitewater West Industries, Ltd. Inflatable surfing apparatus and method
CA3072158C (en) 2013-10-30 2023-05-09 Oriol A. Vicente Inflatable surfing apparatus and method
FR3033003B1 (en) * 2015-02-20 2018-06-15 Ecole Centrale De Nantes SYSTEM FOR GENERATING WAVES IN A BASIN
FR3039421B1 (en) * 2015-07-28 2017-09-01 Laurent Hequily DYNAMIC ARTIFICIAL WAVES INSTALLATION FOR SURFING PRACTICES
CA3221253A1 (en) 2015-11-12 2017-05-12 Whitewater West Industries Ltd. Method and apparatus for fastening of inflatable ride surfaces
US10195535B2 (en) 2015-11-12 2019-02-05 Whitewater West Industries Ltd. Transportable inflatable surfing apparatus and method
CA2948581C (en) 2015-11-13 2024-01-16 Whitewater West Industries Ltd. Inflatable surfing apparatus and method of providing reduced fluid turbulence
US9920544B1 (en) * 2016-11-29 2018-03-20 Walter Judson Bennett Plunger wave generator apparatus for efficiently producing waves in a body of water
DE212017000014U1 (en) * 2017-09-30 2018-02-21 Shih-Hui Liao Modular wave generator
US11273383B2 (en) 2017-11-10 2022-03-15 Whitewater West Industries Ltd. Water ride attraction incorporating a standing wave
US10519679B1 (en) 2018-08-31 2019-12-31 Walter Judson Bennett Plunger artificial wave making apparatus
US11187002B1 (en) 2021-05-03 2021-11-30 Westlake Wave Co. Wave generator pool with varying reef angles
US11686116B2 (en) * 2021-05-18 2023-06-27 Walter Judson Bennett Plunger wave making generator system

Citations (4)

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US4515500A (en) * 1983-11-15 1985-05-07 Ecopool Design Limited Combustion powered wave generator
US4522535A (en) * 1983-08-08 1985-06-11 Ecopool Design Limited Surf wave generator
US4558474A (en) * 1982-10-08 1985-12-17 Ecopool Design Limited Wave generator
FR2693225A1 (en) * 1992-07-03 1994-01-07 Baudin Chateauneuf Pneumatic wave generating system especially for fishponds - uses compressed air supplied through valves to casing which communicates with pool through siphon with valves putting reservoir in selective communication with compressed air source and with casing

Family Cites Families (5)

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US3350724A (en) * 1964-07-07 1967-11-07 Walter J Leigh Method and apparatus for generating artificial waves in a body of water
US3605131A (en) * 1969-07-29 1971-09-20 Uwe Unterwasser Electric Gmbh Device for generating a current of water in swimming pools
US4062192A (en) * 1974-06-03 1977-12-13 Offshore Technology Corporation Method of and mechanism for generating waves suitable for surfing
US4276664A (en) * 1979-01-30 1981-07-07 Baker William H Apparatus for wave-making
US5219315A (en) * 1991-06-28 1993-06-15 Mark Fuller Water effects enhanced motion base simulator ride

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558474A (en) * 1982-10-08 1985-12-17 Ecopool Design Limited Wave generator
US4522535A (en) * 1983-08-08 1985-06-11 Ecopool Design Limited Surf wave generator
US4515500A (en) * 1983-11-15 1985-05-07 Ecopool Design Limited Combustion powered wave generator
FR2693225A1 (en) * 1992-07-03 1994-01-07 Baudin Chateauneuf Pneumatic wave generating system especially for fishponds - uses compressed air supplied through valves to casing which communicates with pool through siphon with valves putting reservoir in selective communication with compressed air source and with casing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11534672B2 (en) 2016-11-08 2022-12-27 Ka'ana Wave Company Inc. Wave producing method and apparatus

Also Published As

Publication number Publication date
JPH11501094A (en) 1999-01-26
AU5092396A (en) 1996-09-23
CN1183711A (en) 1998-06-03
US5621925A (en) 1997-04-22
AU704520B2 (en) 1999-04-22
MX9706713A (en) 1998-06-30

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