EP0293831B1 - Wave making apparatus - Google Patents

Wave making apparatus Download PDF

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Publication number
EP0293831B1
EP0293831B1 EP88108691A EP88108691A EP0293831B1 EP 0293831 B1 EP0293831 B1 EP 0293831B1 EP 88108691 A EP88108691 A EP 88108691A EP 88108691 A EP88108691 A EP 88108691A EP 0293831 B1 EP0293831 B1 EP 0293831B1
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EP
European Patent Office
Prior art keywords
wave
pool
wave generating
generating plate
making apparatus
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP88108691A
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German (de)
French (fr)
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EP0293831A1 (en
Inventor
Norihisa C/O Patent & License And Kodan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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Publication of EP0293831A1 publication Critical patent/EP0293831A1/en
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B31/00—Swimming aids
    • 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
    • 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

Definitions

  • the present invention relates to a pool for surfing having two water ways connected to a wave pool having a wave making apparatus.
  • FR-A-2 291 803 discloses a wave making apparatus comprising a wave generating plate having a wave generating face which is inclined for the center of a pool relativ to a stationary upper surface of the water in said pool. Furthermore, drive means in the form of a rod, a connecting rod and a rotating arm drive said generating plate along a wall which is upwardly and backwardly inclined relativ to the center of the wave pool.
  • high waves appropriate for surfing can be generated easily in a pool by means of two wave making apparatus units which are arranged at the end of two water ways of the pool which can be used as a surfing pool.
  • a wave making apparatus of a pool for surfing comprises a wave generating plate which is driven along a pool wall so that waves cannot be generated behind the wave generating plate if high waves are generated.
  • the pool wall, along which the wave generating plate slides, is inclined so that turbulence can be produced in a deeper zone of water.
  • Fig. 1 is an explanatory view illustrating a wave making apparatus 10 comprising a wave generating plate 12 having a wave generating face 13 (front face of wave generating plate 12) which is inclined forward relative to the stationary upper surface of the water 22 and means for driving wave generating plate 12 along wall 18, wall 18 being inclined backward relative to the center of the wave generating pool.
  • the drive means for plate 12 has a drive shaft 14 coupled to the wave generating plate 12, a mount 16 holding the drive shaft 14, and a drive unit (not shown, but arranged in mount 16) driving wave generating plate 12 along wall 18 through the drive shaft 14.
  • drive shaft 14 coupled to the wave generating plate 12, and mount 16 holding the drive shaft 14, are arranged so that drive shaft 14 and mount 16 have the same incline as that of wall 18.
  • wall 18 It is preferable to incline wall 18 backward relative to the center of the wave pool at an angle ⁇ of 30° to 50° relative to the vertical plane. If the wall 18 is inclined at less than 30°, smaller turbulence is produced in a deeper zone of water. If the wall is inclined at more than 50°, the wave generating plate 12 will be required to be too large.
  • a minimum clearance between wave generating plate 12 and wall 18 is sufficient to permit moving of the wave generating plate 12. If necessary, a slide guide can be provided between wave generating plate 12 and wall 18 in order to carry the partial weight or buoyancy of wave generating plate 12.
  • the lower end of wave generating plate 12 is positioned at a height above pool bottom 20 which is equal to about one-half of the stroke or greater than the stroke necessary to generate waves of desired height.
  • the upper end of front face 13 of wave generating plate 12 is positioned at a height such that water does not splash over the top of wave generating plate 12 when waves of desired height are generated.
  • Wave generating face 13 of wave generating plate 12 is inclined toward the center of the pool, i.e., inclined forward relative to the stationary upper surface 22 of the water, to generate a wave 24 moving toward the center of the pool.
  • the wave generating face 13 of the wave generating plate 12 is desired to be inclined toward the center of the pool at an angle ⁇ of 10° to 40° relative to the vertical plane.
  • the wave generating face 13 need not be flat; it may be curved, either convex or concave.
  • the bottom face of wave generating plate 12 is parallel to inclined wall 18.
  • the top face of wave generating plate 12 and the surface on which drive shaft 14 is mounted have no restriction on shape or orientation.
  • wave generating plate 12 of a block shape having a rectangular section is used, but the wave generating plate 12 is not confined to the abovementioned shape. It is sufficient that the wave generating plate 12 has a wave generating face 13 which is inclined forward.
  • a wave generating plate 12 comprising a wave generating face, bottom face and an upper face and a wave generating plate of a shape of a thin plate having only a wave generating face can be used.
  • a drive means for wave generating plate 12 comprises drive shaft 14 connected to wave generating plate 12, mount 16 holding the drive shaft and a drive unit (not shown) for driving the wave generating plate along wall 18 through said drive shaft.
  • the drive unit coupled to drive shaft 14 may be hydraulic, pneumatic or electrical.
  • the chain lines in Fig. 1 show the wave generating plate 12 in different positions, as driven by the drive means.
  • wave making apparatus when the wave generating plate 12 is pushed into the water by being moved half a stroke downward along wall 18 by the drive unit through drive shaft 14, wave generating face 13 of wave generating plate 12 produces turbulence down to the deep zone in the water, thereby generating waves of desired height.
  • Such generation of the waves by means of wave generating plate 12 is carried out each time wave generating plate 12 is pushed into the water by being moved downward after being moved upward.
  • wave 24 being generated continuously.
  • Fig. 2 is an explanatory view illustrating another embodiment of a wave making apparatus.
  • the wave making apparatus of Fig. 2 comprises a hydraulic actuator which moves drive shaft 14' supported by mount 16'.
  • a pneumatic actuator can be used as a drive unit in place of a hydraulic actuator.
  • the embodiment of Fig. 2 is the same as that of Fig. 1.
  • a typical hydraulic drive unit is shown in Fig. 6, and is described below.
  • Fig. 3 is an explanatory view illustrating still another embodiment of the wave making apparatus.
  • a drive means comprises a drive shaft 34 connected to the wave generating plate 12, the drive shaft 34 having a rack 26 thereon.
  • the drive means further comprises a pinion gear 28 engaged with the rack 26.
  • a drive motor 35 is coupled to drive pinion gear 28, preferably through a reduction gearing (not shown).
  • Mount 36 supports the drive shaft 34 and the drive motor 35 coupled to turn the pinion gear 28 for driving the wave generating plate 12 along a wall through the rack gear 26 on the drive shaft 34.
  • the embodiment of Fig. 3 is similar to that of Fig. 1.
  • FIG. 4 is a plan view illustrating the pool used in the surfing pool example of the invention.
  • Fig. 5 is a cross-sectional view taken on the plane of line 2-2 of Fig. 4.
  • the pool of Fig. 5 includes two wave making apparatuses 10a and 10b, which are the wave making apparatus 10 shown in Fig. 1.
  • the distance from the bottom of pool 30 to the top surface of the water is indicated in parentheses.
  • the bottom surface of pool 30 is lowest in the central area and slopes up toward the pool sides.
  • a wave making apparatus was arranged at each end of two waterways 32a and 32b which are connected to pool 30.
  • the waves generated by wave making apparatuses 10a and 10b pass through the two respective waterways 32a and 32b and cross each other in pool 30.
  • high waves appropriate for surfing can be generated easily in pool 30, by means of the wave making apparatuses 10a and 10b.
  • the form of wave 24 need not be sinusoidal. Waves 24 of high steepness ratio, which have peaked crests and flat troughs, are preferable.
  • the drive unit for driving the wave generating plate 12 is not required to have a sophisticated sinusoidal motion control mechanism. A drive cycle range which cover a very limited range of the cycle is sufficient.
  • the backward angle of inclination ⁇ of the wall 18 was at 45°, and the angle of inclination ⁇ of the wave generating face 13 of the wave generating plate 12 was set at 30°.
  • the reciprocating cycle of operation of the wave generating plate was between 2 and 6 seconds.
  • the design criteria for the stroke of the wave generating plate (distance of movement) for a given depth of water is as follows:
  • the drive means for driving the wave generating plates can be freely chosen, to drive the wave generating plate 12, forward and backward (that is, "to and fro", substantially parallel to the surface of the rearwardly inclined surface 18 of the pool.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Toys (AREA)

Description

  • The present invention relates to a pool for surfing having two water ways connected to a wave pool having a wave making apparatus.
  • FR-A-2 291 803 discloses a wave making apparatus comprising a wave generating plate having a wave generating face which is inclined for the center of a pool relativ to a stationary upper surface of the water in said pool. Furthermore, drive means in the form of a rod, a connecting rod and a rotating arm drive said generating plate along a wall which is upwardly and backwardly inclined relativ to the center of the wave pool.
  • With the known wave making apparatus, however, it is not possible to generate waves which are suitable for surfing.
  • It is therefore an object underlying the present invention to provide a pool having two water ways which comprises wave making apparatus being able to easily generate waves suitable for surfing.
  • The solution of this object is achieved by the features of the main claim.
  • As a result, high waves appropriate for surfing can be generated easily in a pool by means of two wave making apparatus units which are arranged at the end of two water ways of the pool which can be used as a surfing pool.
  • The above objects and other objects and advantages of the present invention will become apparent from the detailed description to follow, taken in connection with the appended drawings.
    • Fig. 1
    is an explanatory view illustrating a wave making apparatus for a pool according to the present invention;
    Fig. 2
    is an explanatory view illustrating another embodiment of a wave making apparatus for a pool according to the present invention;
    Fig. 3
    is an explanatory view illustrating still another embodiment of a wave making apparatus for a pool according to the present invention;
    Fig. 4
    is a plan view illustrating a pool for surfing according to the present invention; and
    Fig. 5
    is a cross-sectional view of the pool taken on the plane of line 2-2 of Fig. 4.
  • A wave making apparatus of a pool for surfing comprises a wave generating plate which is driven along a pool wall so that waves cannot be generated behind the wave generating plate if high waves are generated. In this case, the pool wall, along which the wave generating plate slides, is inclined so that turbulence can be produced in a deeper zone of water.
  • Fig. 1 is an explanatory view illustrating a wave making apparatus 10 comprising a wave generating plate 12 having a wave generating face 13 (front face of wave generating plate 12) which is inclined forward relative to the stationary upper surface of the water 22 and means for driving wave generating plate 12 along wall 18, wall 18 being inclined backward relative to the center of the wave generating pool. The drive means for plate 12 has a drive shaft 14 coupled to the wave generating plate 12, a mount 16 holding the drive shaft 14, and a drive unit (not shown, but arranged in mount 16) driving wave generating plate 12 along wall 18 through the drive shaft 14. To move wave generating plate 12 along wall 18, drive shaft 14, coupled to the wave generating plate 12, and mount 16 holding the drive shaft 14, are arranged so that drive shaft 14 and mount 16 have the same incline as that of wall 18.
  • It is preferable to incline wall 18 backward relative to the center of the wave pool at an angle α of 30° to 50° relative to the vertical plane. If the wall 18 is inclined at less than 30°, smaller turbulence is produced in a deeper zone of water. If the wall is inclined at more than 50°, the wave generating plate 12 will be required to be too large.
  • A minimum clearance between wave generating plate 12 and wall 18 is sufficient to permit moving of the wave generating plate 12. If necessary, a slide guide can be provided between wave generating plate 12 and wall 18 in order to carry the partial weight or buoyancy of wave generating plate 12.
  • The lower end of wave generating plate 12 is positioned at a height above pool bottom 20 which is equal to about one-half of the stroke or greater than the stroke necessary to generate waves of desired height. The upper end of front face 13 of wave generating plate 12 is positioned at a height such that water does not splash over the top of wave generating plate 12 when waves of desired height are generated. Wave generating face 13 of wave generating plate 12 is inclined toward the center of the pool, i.e., inclined forward relative to the stationary upper surface 22 of the water, to generate a wave 24 moving toward the center of the pool. The wave generating face 13 of the wave generating plate 12 is desired to be inclined toward the center of the pool at an angle β of 10° to 40° relative to the vertical plane. The wave generating face 13 need not be flat; it may be curved, either convex or concave. The bottom face of wave generating plate 12 is parallel to inclined wall 18. The top face of wave generating plate 12 and the surface on which drive shaft 14 is mounted have no restriction on shape or orientation. In the embodiment of Fig. 1, wave generating plate 12 of a block shape having a rectangular section is used, but the wave generating plate 12 is not confined to the abovementioned shape. It is sufficient that the wave generating plate 12 has a wave generating face 13 which is inclined forward. A wave generating plate 12 comprising a wave generating face, bottom face and an upper face and a wave generating plate of a shape of a thin plate having only a wave generating face can be used.
  • A drive means for wave generating plate 12 comprises drive shaft 14 connected to wave generating plate 12, mount 16 holding the drive shaft and a drive unit (not shown) for driving the wave generating plate along wall 18 through said drive shaft. The drive unit coupled to drive shaft 14 may be hydraulic, pneumatic or electrical. The chain lines in Fig. 1 show the wave generating plate 12 in different positions, as driven by the drive means.
  • According to the wave making apparatus described above, when the wave generating plate 12 is pushed into the water by being moved half a stroke downward along wall 18 by the drive unit through drive shaft 14, wave generating face 13 of wave generating plate 12 produces turbulence down to the deep zone in the water, thereby generating waves of desired height. Such generation of the waves by means of wave generating plate 12 is carried out each time wave generating plate 12 is pushed into the water by being moved downward after being moved upward. Thus, wave 24 being generated continuously.
  • Fig. 2 is an explanatory view illustrating another embodiment of a wave making apparatus. The wave making apparatus of Fig. 2 comprises a hydraulic actuator which moves drive shaft 14' supported by mount 16'. A pneumatic actuator can be used as a drive unit in place of a hydraulic actuator. In other respects, the embodiment of Fig. 2 is the same as that of Fig. 1. A typical hydraulic drive unit is shown in Fig. 6, and is described below.
  • Fig. 3 is an explanatory view illustrating still another embodiment of the wave making apparatus. In this embodiment, a drive means comprises a drive shaft 34 connected to the wave generating plate 12, the drive shaft 34 having a rack 26 thereon. The drive means further comprises a pinion gear 28 engaged with the rack 26. A drive motor 35 is coupled to drive pinion gear 28, preferably through a reduction gearing (not shown). Mount 36 supports the drive shaft 34 and the drive motor 35 coupled to turn the pinion gear 28 for driving the wave generating plate 12 along a wall through the rack gear 26 on the drive shaft 34. In other respects, the embodiment of Fig. 3 is similar to that of Fig. 1.
  • An example of the wave making apparatus arranged in a pool for surfing is shown in Figs. 4 and 5. Fig. 4 is a plan view illustrating the pool used in the surfing pool example of the invention. Fig. 5 is a cross-sectional view taken on the plane of line 2-2 of Fig. 4. The pool of Fig. 5 includes two wave making apparatuses 10a and 10b, which are the wave making apparatus 10 shown in Fig. 1. In Fig. 4, the distance from the bottom of pool 30 to the top surface of the water is indicated in parentheses. The bottom surface of pool 30 is lowest in the central area and slopes up toward the pool sides. A wave making apparatus was arranged at each end of two waterways 32a and 32b which are connected to pool 30. The waves generated by wave making apparatuses 10a and 10b pass through the two respective waterways 32a and 32b and cross each other in pool 30. As a result, high waves appropriate for surfing can be generated easily in pool 30, by means of the wave making apparatuses 10a and 10b. In the case of a wave making pool for surfing, the form of wave 24 need not be sinusoidal. Waves 24 of high steepness ratio, which have peaked crests and flat troughs, are preferable. The drive unit for driving the wave generating plate 12 is not required to have a sophisticated sinusoidal motion control mechanism. A drive cycle range which cover a very limited range of the cycle is sufficient.
  • In a test example, the backward angle of inclination α of the wall 18 was at 45°, and the angle of inclination β of the wave generating face 13 of the wave generating plate 12 was set at 30°. The reciprocating cycle of operation of the wave generating plate was between 2 and 6 seconds. The design criteria for the stroke of the wave generating plate (distance of movement) for a given depth of water is as follows:
    Figure imgb0001
  • Consequently,
    Figure imgb0002
  • The improved effects of the present invention are as follows:
    • (a) The wave making apparatus can produce turbulence in a deep zone of water in comparison with prior art wave making apparatus. Therefore, high waves can be easily generated.
    • (b) Any special wave absorbing work is not required because there is no surface of water behind the wave generating plate. Accordingly, the space around the wave making apparatus which is necessary for arranging said apparatus is reduced and, therefore, maneuverability for arranging the wave making apparatus increases.
  • While the invention has been described above with respect to specific apparatus, it should be clear that various modifications and alternations can be made within the scope of the invention as defined in the appended claims. For example, the drive means for driving the wave generating plates can be freely chosen, to drive the wave generating plate 12, forward and backward (that is, "to and fro", substantially parallel to the surface of the rearwardly inclined surface 18 of the pool.

Claims (1)

  1. Pool for surfing having two water-ways (32a, 32b) connected to a wave pool (30) having a wave making apparatus comprising:
       at least one wave generating plate (12) having a wave generating face (13) which is inclined toward the center of the wave pool (30) relative to a stationary upper surface (22) of water in said wave pool (30), and
       drive means (14, 16; 14', 16'; 26, 28, 34, 35, 36) for driving said wave generating plate (12) along a wall (18) which is upwardly and backwardly inclined relative to the center of the wave pool (30),
       said wave making apparatus comprising two wave making units (10a, 10b) being arranged at each end of the two water-ways (32a, 32b), the waves generated by said wave generating units (10a, 10b) passing through the two respective water-ways (32a, 32b) and crossing each other in said pool (30).
EP88108691A 1987-06-01 1988-05-31 Wave making apparatus Expired - Lifetime EP0293831B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP134979/87 1987-06-01
JP62134979A JPS63300783A (en) 1987-06-01 1987-06-01 Wave forming apparatus

Publications (2)

Publication Number Publication Date
EP0293831A1 EP0293831A1 (en) 1988-12-07
EP0293831B1 true EP0293831B1 (en) 1991-09-18

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Application Number Title Priority Date Filing Date
EP88108691A Expired - Lifetime EP0293831B1 (en) 1987-06-01 1988-05-31 Wave making apparatus

Country Status (6)

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EP (1) EP0293831B1 (en)
JP (1) JPS63300783A (en)
KR (1) KR920009136B1 (en)
AU (1) AU597491B2 (en)
DE (1) DE3864907D1 (en)
ES (1) ES2025731T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012150908A1 (en) * 2011-05-04 2012-11-08 Stagger Reef Pte. Ltd. Method and apparatus for producing progressive waves suitable for surfing using staggered wave generators in sequence
US11534672B2 (en) 2016-11-08 2022-12-27 Ka'ana Wave Company Inc. Wave producing method and apparatus

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ATE145666T1 (en) * 1992-08-14 1996-12-15 Procter & Gamble LIQUID DETERGENTS CONTAINING PEPTIDE TRIFLUOR METHYL KETONE
CA2393485C (en) * 1999-12-13 2009-06-16 Kerry Peter Black Wave pool construction
DE10308812B4 (en) * 2003-02-27 2007-05-16 Bernd Reif Device for generating standing waves in streams
AU2004240161B1 (en) 2004-12-09 2006-04-13 Liquid Time Ltd Wave generating apparatus
DE102010035117B4 (en) * 2010-08-23 2012-06-06 Falko Müller Plant and method for generating waves
KR101360275B1 (en) * 2012-12-10 2014-02-12 윤대원 Artificial wave generation device
AU2017251684B2 (en) * 2017-02-09 2018-12-06 Smartpark Technologies LLC Surfing wave pool using ship waves
US10119284B1 (en) * 2017-08-02 2018-11-06 Ryan M. Dunlap Wave generator
CN108221844B (en) * 2017-12-31 2023-01-10 浙江大学 Dynamic response test device for near-sea foundation pit under effect of simulated tidal load
FR3084266B1 (en) * 2018-07-30 2020-10-16 Laurent Hequily DYNAMIC ARTIFICIAL WAVES INSTALLATION FOR THE PRACTICE OF SURFING
CN109342309B (en) * 2018-11-26 2024-02-27 辽宁科技大学 Test device and test method for simulating marine corrosion environment
CN110346112B (en) * 2019-08-09 2024-01-26 交通运输部天津水运工程科学研究所 Wave generator with adjustable wave generating width and convenient to assemble and disassemble
CN113295380B (en) * 2021-06-08 2023-03-24 哈尔滨工程大学 Wave making device
US11708700B2 (en) 2021-08-18 2023-07-25 Mark Bates Wave generation assembly
CN115126305B (en) * 2022-08-10 2024-05-14 浙江佳合文化科技股份有限公司 Arc wave making device and wave making machine
CN117433743B (en) * 2023-12-18 2024-02-13 天津大学 Wave water tank for wave boundary layer experiment

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US3005207A (en) * 1959-01-13 1961-10-24 Matrai Miklos Swimming pool
US3350724A (en) * 1964-07-07 1967-11-07 Walter J Leigh Method and apparatus for generating artificial waves in a body of water
FR2291803A1 (en) * 1974-11-20 1976-06-18 Alsthom Cgee IMPROVEMENTS FOR SWELL GENERATORS OF THE DIVER TYPE
GB1592452A (en) * 1976-04-20 1981-07-08 Ind & Commercial Electronics L Apparatus for creating waves in a body of liquid
DE3305508C2 (en) * 1983-02-14 1984-12-20 Christian Dr.-Ing. 1000 Berlin Boes Pneumatic wave generator for surf wave pools

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012150908A1 (en) * 2011-05-04 2012-11-08 Stagger Reef Pte. Ltd. Method and apparatus for producing progressive waves suitable for surfing using staggered wave generators in sequence
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
KR890000123A (en) 1989-03-11
JPH0512509B2 (en) 1993-02-18
DE3864907D1 (en) 1991-10-24
AU1676188A (en) 1988-12-01
AU597491B2 (en) 1990-05-31
EP0293831A1 (en) 1988-12-07
KR920009136B1 (en) 1992-10-13
ES2025731T3 (en) 1992-04-01
JPS63300783A (en) 1988-12-07

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