FR3065239A1 - DEVICE FOR GENERATING A STATIONARY WAVE COMPRISING A WAVE BASIN WITH A RAMP - Google Patents

Abstract

The invention relates to a device for producing a stationary wave comprising a wave pool with a ramp, an obstacle and a wave zone. The ramp has a substantially flat water flow surface in longitudinal section. The obstacle has a substantially curved water flow surface in longitudinal section. The ramp and the obstacle are adjacent. At the interface, the water pipe surfaces of the boom and the obstacle have substantially the same slope in longitudinal section.

Description

© Publication number: 3,065,239 (only to be used for reproduction orders) © National registration number: 17 53218 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY

COURBEVOIE © Int Cl ⁸ : E 04 H4 / 00 (2017.01), A 63 B 69/12

A1 PATENT APPLICATION

©) Date of filing: 12.04.17. (© Priority: (© Applicant (s): HYDROSTADIUM Société anonyme - FR. (© Date of public availability of the request: 19.10.18 Bulletin 18/42. @ Inventor (s): VINCENT MARTIN and EL BADAOUI YACINE. ©) List of documents cited in the preliminary search report: See the end of this booklet (© References to other related national documents: (® Holder (s): HYDROSTADIUM Limited company. ©) Extension request (s): © Agent (s): RENT AND ABELLO.

DEVICE FOR GENERATING A STATIONARY WAVE COMPRISING A WAVE BASIN WITH A RAMP.

FR 3 065 239 - A1 (tv) The invention relates to a device for producing a standing wave comprising a wave basin with a ramp, an obstacle and a wave area. The ramp has a substantially planar water flow surface in longitudinal section. The obstacle has a substantially curved water flow surface in longitudinal section. The ramp and the obstacle are adjacent. At the interface, the water pipe surfaces of the ramp and the obstacle have substantially the same slope in longitudinal section.

i

Device for generating a standing wave comprising a wave basin with a ramp

The invention relates to a device for generating a standing wave comprising a wave basin with a ramp.

Devices for producing stationary waves are generally known in the state of the art. The document WO 2008 / 03792s8 A1 describes for example a basin in which the water is directed on a ramp. The ramp has a deflector at its lower end, the water being agitated by means of the deflector so that a stationary wave is generated behind the ramp.

The invention aims to provide an improved device for generating a standing wave.

The invention particularly aims to obtain improved wave formation.

This objective is achieved according to the invention by means of a device for producing a standing wave comprising a wave basin with a ramp, an obstacle and a wave area, in which said ramp has a substantially planar flow surface in section. longitudinal and in which the obstacle has a substantially curved flow surface in longitudinal section, in which the ramp and the obstacle are adjacent at one point, so that at this point the flow surfaces of the ramp and of the obstacle have substantially the same slope in longitudinal section. Other advantageous embodiments will emerge from the description below, the figures and the dependent claims. The various features of the described embodiment are not limited thereto, but can be combined with each other and with other features to create other embodiments.

There is provided a device for producing a standing wave comprising a wave basin with a ramp, an obstacle and a wave area. The ramp has a substantially planar water flow surface in longitudinal section. The obstacle has a substantially curved water flow surface in longitudinal section.

The ramp and the obstacle are adjacent. At the interface, the water pipe surfaces of the ramp and the obstacle have substantially the same slope in longitudinal section.

lin awantaoû du Hicnncîtif nrnnncû oct nuo l'onoroio rinôtîmio due l'aii oct iitilicoo do optimally to produce a wave. The water reaches the ramp by the force of gravity, and preferably by additional kinetic energy. In addition, the water to produce a wave is advantageously catapulted upward by a tangent curve which is formed by the water flow surface of the ramp and the water flow surface of the obstacle. .

In one embodiment, it is provided that the obstacle is in the form of a springboard. Preferably, the water flow surface of the obstacle has a partial downward surface in the direction of flow and a partial upward surface in the direction of flow. In particular, an inflection point is located between the descending partial surface and the ascending partial surface in a longitudinal section of the water flow surface.

Preferably, the interface is where the ramp and the obstacle are adjacent to each other. The interface is defined by the passage from a rectilinear surface in internal longitudinal section of the ramp to a curved surface in longitudinal section of the obstacle. The passage is preferably without stalling.

The water flow surface is the surface at least of the ramp or of the obstacle over which the water flows during the intended operation of the device. It is intended in particular that the water leaving a discharge opening flows on the surface of the water flow from the boom and passes from the water flow surface of the ramp to the surface of the water flow from the obstacle.

In a preferred embodiment, it is expected that the ramp will slope in the direction of flow. In another embodiment, it is provided that the ramp, and preferably the water flow surface of the ramp, is inclined in longitudinal section from about 5 ° to about 20 °, preferably about 10 ° to about 20 °, more preferably from about 15 ° to about 20 ° and even more preferably from about 18 °. Preferably the slope is oriented downward in the direction of flow.

In another embodiment, the ramp is expected to be about 3 m to about 5 m long, preferably about 3 m to about 4 m, and particularly preferably about 3.2 m. In another embodiment, it is provided that the water flow surface of the obstacle has a stall edge. The stall edge is preferably a step or a downward shift. In one embodiment, the stall edge includes a downwardly flush wall. In another embodiment, the stall edge includes a downward wall offset from the direction of flow. In particular, the wall towards the bottom of the dropout edge is offset from the flow direction from about 10 cm to about 50 cm. In another embodiment, the stall edge is substantially cantilevered. In particular, the stalling edge substantially in overhang is supported by at least one support. More preferably, the obstacle ends in the direction of flow at the stall edge. In a preferred embodiment, the stall is used to create a wave behind the obstacle. In another preferred embodiment, it is intended that the stall edge has a stall height above the bottom of the wave area of about 20 cm to about 60 cm.

In another preferred embodiment, it is provided that a deflector is associated with the obstacle. In another preferred embodiment, it is provided that the deflector is associated with the stall edge. In one embodiment, the deflector is a deflector plate associated with the obstacle. The deflector preferably has an angle of attack relative to the horizontal in longitudinal section.

In a preferred embodiment, it is provided that the deflector has an angle of attack relative to the horizontal from 0 ° to 45 ° upwards in the direction of flow. In another preferred embodiment, it is provided that the angle of attack is adjustable. The angle of attack of the deflector is in particular adjustable by means of a stepping motor or adjusting screws.

In another embodiment, it is intended that the deflector has a length of from about 5 cm to about 40 cm, preferably from about 20 cm to about 40 cm and more preferably from about 20 cm to about 30 cm.

Π ™ * · a bed Irtrrvta / 4 / »raolîeofil art r \ r * àt / ii aiia lia hois + aiir / 4α l * / -» k »r + a / * la Hu.rlôenir

L / UIIJ VtltV. UUÎ'V IVIIIIC. V "V- I VUUJUklVI Ij II VJL} S" V "VVI lu IIUULVUI VI K- I UMULUCIV UU UI.J.JUU from the lowest point of the water flow surface of the obstacle is about 20 cm to about 50 cm and preferably about 30 cm to about 40 cm. In one embodiment, the height of the obstacle includes the deflector and is preferably variable. In another embodiment, it is provided that the height of the obstacle, possibly with the deflector, is the height of the obstacle above a point of inflection of the water flow surface of the obstacle. In another embodiment, it is provided that the height of the stall edge is the height above the ground immediately following in the direction of flow, that is to say from the bottom of the -zone- de-wavesvta-height-of-the-stalling-edge is preferably-height of the obstacle without deflector.

In one embodiment, it is provided that the ramp includes in particular ramp sections arranged parallel to each other over the width which have different slopes. In particular, approximately 2 to approximately 5, and preferably approximately 3 to approximately 4 ramp sections are provided. In one embodiment, it is provided that the obstacle notably comprises obstacle sections arranged parallel to each other over the width which have different curve functions. There are in particular provided approximately 2 to approximately 5, and preferably approximately 3 to approximately 4 obstacle sections. More preferably, the ramp sections have the same slope at the interface as the associated obstacle sections.

A device is also proposed for generating a standing wave with at least one discharge device for producing a laminar flow. The discharge device for producing a laminar flow comprises a discharge chamber, the discharge device comprising in the discharge chamber a flow straightener with a plurality of guide plates.

The expression laminar flow designates according to the invention a flow occurring in particular against a wall, a profile and / or a ramp. The laminar flow is preferably characterized in that it follows, outside a laminar or turbulent boundary layer, the course of a wall, of a profile and / or of a ramp without detaching or agitating. Furthermore, the laminar flow is preferably a movement, in particular of water, in which no visible turbulence occurs.

In a preferred embodiment, provision is made for water to be conducted through the flow straightener, in which the flow can be soothed or made laminar, in particular by means of guide plates. A calm flow shows practically no visible turbulence. In particular, the water turbulence is reduced by the device. In one embodiment, the calming can be caused directly by at least one device such as, for example, the flow straightener, which in particular makes the flow substantially laminar. In an alternative or complementary embodiment, at least one device is provided which makes the water flow more slowly, such as for example a diffuser and / or an open channel. In another embodiment, it is provided that a diffuser and / or an open channel can be combined in the device with the flow straightener. The water can be conveyed in a first step in the diffuser or in an open channel and preferably in an additional step through the flow straightener. Turbulence in the water flow can be reduced by the flow straightener. In particular, the device can allow the water to exit from the evacuation device, the surface of the water flow being flat. In particular, the evacuation device is designed so that the water flows after leaving the evacuation orifice.

In one embodiment, it is provided that the evacuation device is part of a compartment. The discharge device comprises in particular a discharge chamber which is designed so that the water can be directed out of the compartment. Furthermore, the evacuation device is preferably associated with a ramp. Furthermore, the discharge device is preferably designed so that the water leaving the discharge device is directed onto the ramp. In another embodiment, it is provided that the evacuation chamber is connected in a communicating manner to an intermediate chamber of the compartment.

The flow straightener comprises a plurality of guide plates which can be used in particular to direct the flow of water. In one embodiment, it is intended that the water is dispersed in the flow direction upstream of the flow rectifier by means of a diffuser. The flow straightener is preferably fi rnnrn dp <; ortp nup differpntpç rniirhpç rl'paii <: nnt pvanippç narallplpmpnt Ιρς ιιηρς aiiv _ - - · J - - - -I - - -------— _. . _ -. - - f. - ----.

others and in particular that the water leaves the evacuation device preferably without turbulence.

In another embodiment it is provided that the water can be directed in the direction of discharge by means of the guide plates. Preferably, the guide plates are arranged so that the water flowing against it is directed towards a discharge opening. In another embodiment, provision is made for the guide plates to be arranged horizontally and / or vertically. In

- - another-form-of embodiment _{r-it-is-provided-q} ^ a-plurality of guide plates 15 are oriented horizontally and / or a plurality of guide plates vertically.

In another embodiment, it is provided that a plurality of guide plates is arranged in parallel, in particular in parallel so that the normals to their surfaces are parallel to each other. The guide plates are preferably substantially planar.

In another embodiment, provision is made for the guide plates to extend in the direction of discharge and / or perpendicular to the direction of discharge. In particular, their extent is a superficial extent. In one embodiment, the guide plates have a profiled shape.

In another embodiment, it is provided that at least two guide plates form an angle of about 90 ° between them. In another embodiment, it is provided that at least two guide plates form between them a different angle of approximately 90 °. In particular, two guide plates preferably have an angle between them of about 45 to about 90 °.

In one embodiment, it is provided that the evacuation device adjoins a ramp. In another embodiment, provision is made for a ramp to enter the evacuation device, in particular to enter the evacuation chamber. In another embodiment, provision is made for the ramp in particular to lie flat against or enter a bottom of the evacuation device. Furthermore, it is preferably provided that the discharge device interacts with the ramp so that a laminar flow can be produced on the ramp.

In another embodiment, provision is made for at least two guide plates to be arranged substantially parallel to one another. In another embodiment, it is provided that at least one guide plate is arranged parallel to a wall of the evacuation chamber. In another embodiment, provision is made for a surface area of at least one guide plate to follow a flow line in the discharge chamber. In particular, a surface area of at least one guide plate follows a flow line in the evacuation chamber which, without the flow rectifier, would be in the evacuation chamber.

In one embodiment, it is provided that the guide plates have a first distance of 20 cm or more between them. In another embodiment, it is provided that at least two guide plates arranged in particular immediately one next to the other or one above the other have between them a first distance of at least at least about 5 cm to about 80 cm, preferably from about 10 cm to about 40 cm and more preferably from about 20 cm to about 40 cm.

In another embodiment, it is provided that at least one guide plate has a second distance of approximately 20 cm or more from a wall of the evacuation chamber. In another embodiment, it is expected that at least one guide plate has a second distance of about 5 cm to about 80 cm, preferably about 10 cm to about 40 cm and more preferably about 20 cm to about 40 cm from a wall of the evacuation chamber.

Short distances of the guide plates from each other and / or from the wall of the discharge chamber improve the straightening of the flow. At the same time, the guide plates in the flow increase the friction and therefore the loss of kinetic energy. The recommended distances of the guide plates from each other and / or relative to the wall of the evacuation chamber allow effective straightening in order to generate a laminar flow on the boom while minimizing energy consumption.

In one embodiment, the wall of the evacuation chamber comprises a rdafQnrt a fQnfj St / O’J 2 U ΠΊΟ! Π5 U HS ρ3Γ0!

In another embodiment, it is provided that at least two guide plates are arranged between them so that the normals to their surfaces form an angle of about 45 ° to about 90 °, preferably about 60 'at approximately 90 ° and more preferably from approximately 80 ° to approximately 90 ° and the normal of the surfaces are arranged perpendicular to the evacuation device.

In another embodiment, it is provided that the guide plates form

--------- a honeycomb structure v In another embodiment, it is intended that the guide beams transversely form sections of square, rectangular, trapezoidal and / or parallelepiped pipes. In another embodiment, it is provided that at least two guide plates are arranged one behind the other in the direction of flow. Preferably, two substantially horizontal guide plates and / or two substantially vertical guide plates are arranged, with a distance between them, one behind the other in the same plane in the direction of flow. In one embodiment, the guide plates have a surface extent in the direction of flow in the discharge chamber from about 10 cm to about 100 cm, preferably from about 20 cm to about 50 cm and more preferably from about 30 cm to about 50 cm.

In another embodiment, it is expected that a height of the discharge chamber decreases iteratively or regularly in the direction of flow. Preferably, the height of the evacuation chamber is the distance between the ceiling and the bottom of the evacuation chamber. Preferably, the water flowing through the discharge chamber can be accelerated by means of it. Thanks to its advantageous design, the evacuation chamber acts like a nozzle.

A method is also proposed with the following steps for producing a laminar flow in a device as described above:

- provide an evacuation device including an evacuation chamber,

- provide a flow rectifier in the evacuation chamber with a plurality of guide plates,

- run water through the drainage device.

In a preferred embodiment, it is intended that water can be conducted through the flow straightener, in which the guide plates make laminar or soothe the flow. Calming can be brought about immediately by at least one device such as, for example, at least one flow straightener which makes the flow substantially laminar and / or by at least one device which makes the water flow more slowly such as , for example, a diffuser and / or an open channel. In another embodiment, provision is made for the diffuser and / or the open channel to be combined with the device, preferably with the flow straightener. The water is led in a first step in the diffuser or in the open channel and in another step through the flow straightener. The flow straightener reduces turbulence in the water flow and in particular, after the water has left the drainage device, provides a flat water surface and a peaceful flow. The device is in particular designed so that the water flows.

In one embodiment, it is expected that the water is accelerated by reducing the height of the evacuation chamber in the evacuation device. The evacuation chamber preferably acts as a nozzle. Furthermore, it is preferably provided that the guide plates follow the flows located in the evacuation chamber, in particular the flow lines in the evacuation chamber.

By following the flow present in the evacuation chamber, it should be understood that the guide plates are arranged so that their surface extent is arranged in the direction of an ideal ideal flow which is produced in particular by the walls from the evacuation chamber and / or through an evacuation orifice.

In a preferred embodiment, it is provided that the guide plates are arranged so that the turbulence which can be generated for example by a nozzle effect of the discharge chamber has a counterbalancing effect.

In another embodiment, it is provided that the water is guided in a direction of discharge on a ramp. In another embodiment, provision is made for the water to be guided in a discharge direction on a flat surface.

In one embodiment, the ramp is arranged on the downstream side of the device. In another embodiment, the ramp is inclined, in particular inclined in the downward flow direction.

The object of the invention is in particular to propose a device and a method by means of which a flow of water with a flat surface can be produced or is produced. The objective of the invention is in particular to propose a device and a method by means of which a characteristic of a wave produced can be modified.

There is provided a discharge device for producing a laminar flow, preferably striking, the flow device comprising a blade with a cutting edge. The blade is associated with an evacuation opening of the evacuation device, the opening height of the evacuation device and in particular of the evacuation opening being determined as a function of a distance from a bottom of the device d evacuation at the cutting edge.

The discharge opening in one embodiment has a width and an opening height, the width being notably notably greater than the opening height.

In another embodiment, it is expected that the ratio of the width to the opening height is from about 3: 1 to about 10: 1, preferably from about 5: 1 to about 10: 1. Preferably, the width of the discharge opening is substantially equal to a width of the blade. Furthermore, the width of the discharge opening is preferably substantially equal to a width of the ramp.

In another embodiment, it is provided that the opening height is the distance between the cutting edge of the blade and a surface below in the direction of gravity, for example the bottom of the opening outlet or a water directing surface of the ramp. The opening height is preferably the vertical distance between the cutting edge and the surface below. In one embodiment, the opening height is the extent of the discharge opening perpendicular to the direction of flow and perpendicular to the width of the discharge opening.

In a preferred embodiment, it is provided that the blade has a width which corresponds substantially to the width of the discharge opening. In another embodiment, it is provided that the width of the blade is equal to or greater than the width of the compensation opening. Preferably, the blade is arranged on the discharge opening of the discharge device so that an opening mode can be adjusted by means of the blade. In particular, the blade is preferably applied without play on an external face of the evacuation device.

In a particularly preferred manner, the blade has a blade height which corresponds approximately to a height of the discharge opening. In another embodiment, it is provided that the blade has a blade height which is greater than the opening height of the discharge opening.

In one embodiment, the blade comprises a metal, preferably a stainless metal. In another embodiment, it is expected that the blade comprises a plastic material, preferably a polycarbonate.

In a particularly preferred manner, it is provided in one embodiment that the blade has at least one degree of freedom. In particular, the blade is movably arranged, preferably disposed movably around the vertical axis on the discharge opening. More preferably the blade is mounted movably in at least one direction, and even more preferably in at least two directions. The blade more preferably has two degrees of freedom. For example, the blade can be moved in translation on the vertical axis, in particular preferably to determine the opening height. In another embodiment, it is provided that the blade can pivot at least partially around at least one axis. This has the advantage that the opening height can be adjusted differently over the width of the discharge opening. In a particularly preferred manner, the blade is movably mounted on the vertical axis of the evacuation device. In a particularly preferred manner, the blade is movably mounted transversely in the direction of gravity. In another embodiment, it is provided that the blade is movable transversely, perpendicular to the direction of discharge and perpendicular to the surface of the skin, in particular to the surface of the skin on a ramp, and / or perpendicular to the direction d evacuation of water from the evacuation device.

In one embodiment, at least one side of the blade is rectangular in shape.

In another embodiment, at least one side of the blade is trapezoidal.

In another embodiment, it is provided that the opening height can be

-modified-by-the-blade-The-blade-is-preferred-arranged-on-the-opening-evacuation so that the opening height can be reduced or increased by moving the blade. In particular, the evacuation speed or the water flow of the evacuation device can be influenced by means of the blade. In another embodiment, provision is made for the blade to smooth the surface of the water leaving the discharge device. In a particularly preferred manner, it is provided in one embodiment that the blade is arranged on the downstream side of the discharge opening in the direction of flow, in particular immediately downstream.

In another embodiment, it is expected that the opening height is between about 5 cm and about 100 cm, preferably between about 15 cm and about 90 cm, more preferably between about 30 cm and about 80 cm and again more preferably between about 50 cm and 75 cm.

In a preferred embodiment, provision is made for the cutting edge to have a bevel on one side. Furthermore, one embodiment provides that the blade has a cutting edge which has serrations. Particularly preferably, it is provided that the cutting edge of the blade is straight. The cutting edge preferably forms substantially a straight line.

In a particularly preferred embodiment, the edge has a bevel. The bevel is preferably a flat section of the blade which, in a sectional view in the direction of the cutting edge, ends substantially at a point. In particular, the bevel is the sharpened part of the blade. In another embodiment, it is expected that the blade has a bevel on one side. In another embodiment, the blade has a bevel on its two sides. One side of the blade is a side blade surface within the meaning of the present invention. In a preferred embodiment, it is provided that the bevel is located on the side facing downstream of the blade.

The blade is preferably inclined on one side facing downstream, and more preferably partially submerged in water on the side facing downstream, that is to say in particular the side which is facing the opening. when the device or the evacuation device is operating. On the side opposite to the downstream, it is preferably arranged substantially above the surface of the water when the device or the evacuation device is operating.

In another embodiment, it is intended that the bevel forms an angle with respect to the direction of discharge from about 30 'to about 60', preferably from about 30 ° to about 50 °, more preferably from about 40 ° to about 50 * and even more preferably about 45 °.

In another embodiment, provision is made for the bevel to form a sharpening angle relative to a blade height of from about 30 'to about 60 °, preferably from about 30' to about 50 °, more preferably from about 40 ° to about 50 'and even more preferably from about 45 °. In another embodiment, the cutting edge has a wire. In another embodiment, it is provided that the cutting edge is blunt, that is to say cordless.

The angle between the bevel and the direction of discharge is open upwards. Preferably, the angle should be determined between the discharge surface immediately behind the discharge device and the bevel of the side blade surface.

It is also proposed a device for producing a standing wave comprising at least one discharge device as described above. This device has a ramp, a surface vector of a water flow surface of the ramp being arranged perpendicular to the direction of flow and perpendicular to a width of the discharge opening.

Danc iinp fnrmp Hp realicatinn la ramnp pet riicnncép pn aval rin Hicnncitif d'Éwari latinn

- - - · - - ’· .f · - · - - - - -. - J --—— - - “... w. _ ". . "- p.

In another embodiment, the ramp is part of or is placed in a wave pool. The ramp is preferably sloping in the direction of flow. In another embodiment, the ramp is arranged horizontally. In particular, a surface vector of the water flow surface of the ramp is arranged parallel to the gravity vector. In one embodiment, the ramp is planar. In particular, the water flow surface is flat. In one embodiment, it is provided that the water flow surface forms a flat surface between the evacuation device and an obstacle on which the water flows after the exit of the device ^! evacuation-In-a-form-of-realization-it-is-provided-that a bottom of the evacuation device, in particular of the evacuation chamber, is aligned, in particular without stalling, with the surface of water flow of the ramp . In one embodiment, the ramp, more preferably the water flow surface, enters the discharge device. In another embodiment, it is provided that the evacuation device is arranged on the ramp, and in another preferred embodiment, it is provided that the bottom of the evacuation device, in particular of the evacuation chamber , is part of the water flow ramp or surface.

A method is also proposed for producing a laminar flow with an evacuation device as described above, a blade being disposed immediately behind an evacuation opening of the evacuation device, an opening height of the evacuation device being determined at least by a distance from the bottom relative to the cutting edge, water flowing from the evacuation device and the cutting edge of the blade smoothing a surface of water.

In particular, the cutting edge smoothes the surface of the water flowing from the discharge opening. In particular, the blade is arranged so that the water has a smooth surface, in other words flat, for example on a flat surface located behind, such as for example the water flow surface of the ramp or the flow surface of water.

In another embodiment, it is expected that the blade has at least one degree of freedom of movement. This makes it possible to modify the opening height preferably. The degree of freedom can be a degree of freedom of rotation or a degree of freedom of translation. In particular, it is provided in one embodiment that the blade is movable in translation towards the bottom of the evacuation chamber or a ramp. More preferably, it is provided that the blade is movable in translation in the direction or in the direction opposite to the gravity vector. In another embodiment, it is provided that the blade is movable simultaneously or successively in two or three or more degrees of freedom. Preferably, the blade can be moved by an adjusting means, for example a stepping motor. In another embodiment, it is provided that the blade is mechanically fixed, for example by means of at least one screw. For example, the blade has at least one oblong hole. In another embodiment, it is provided that a movement of the blade comprises, in at least one degree of freedom, detaching the blade from its first position, for example by loosening at least one screw, and fixing the blade in a second, a third position and / or more.

In another embodiment, it is provided that the water is guided on a ramp. In particular, the water is guided over a flow surface of the ramp.

In another embodiment, it is expected that the water will flow from the discharge device in a discharge direction which is perpendicular to the normal of a water flow surface of the boom. Preferably, the water is guided on the ramp so that no turbulence appears or is produced during the passage from the evacuation device to the ramp.

The object of the invention is in particular to propose an energy-efficient water circulation in a device for producing a standing wave.

It is further proposed a device for generating a standing wave which comprises a wave basin, a water return channel and a compartment. The wave basin comprises a wave zone and a suction zone, the suction zone being located behind the wave zone and being connected in particular in a communicating manner to the water return channel. The water return channel is connected in particular in a communicating manner to the compartment, the compartment having a drainage device which has a drainage orifice through which the water can be led to the wave basin.

The wave basin is preferably a delimited area which is located between the compartment or the evacuation device and a delimiting wall downstream. The wave pool preferably includes a wave area in which the wave can form. Furthermore, the wave basin notably comprises a suction zone from which the water behind the wave or behind the wave zone of the wave basin flows or is sucked up. In one embodiment, the wave basin has at least two other walls which delimit the wave basin laterally or perpendicular to the direction of flow. Preferably, the wave-basin-presents-an-obstaele-for-training-d ^! une-vague-stationnaire-In one embodiment, the wave basin has a ramp.

The water return channel preferably conducts water from the wave basin into the compartment. Preferably, the water return channel is arranged at least partially under the wave basin. More preferably, the return water channel is approximately as wide as the wave basin, and even more preferably approximately as wide as the suction zone, perpendicular to the direction of flow in the return water channel. In another embodiment, it is expected that the water return channel has a smaller width than the wave basin. In another embodiment, it is expected that the water return channel has a greater width than the wave basin. In another embodiment, provision is made for the water return channel to have a plurality of partial channels.

In one embodiment, the compartment is a delimited area in which water pressure can be generated. The compartment can be an open or closed channel. In particular, a closed channel is a pressure pipe. Preferably, at least one pump is arranged in the compartment. In another embodiment, two to ten pumps are arranged, preferably two to six pumps and more preferably four pumps. In another embodiment, provision is made for water to be supplied to the compartment, for example by pumps or by placing the compartment in a stream.

In one embodiment, it is expected that the wave area of the wave basin is associated with an obstacle. More preferably, the wave area of the wave basin is an area that is designed so that a wave can form there. More preferably, it is expected that the wave area is an area between the obstacle and the suction area.

In one embodiment, it is provided that the suction area of the wave pool is the area which is located in the immediate vicinity of the wave area, especially behind the wave area in the direction of flow. Furthermore, it is advantageously provided in one embodiment that the suction zone is the zone into which water is introduced into the water return channel. More preferably, it is expected that, when the device is operating, the direction of flow changes in the suction zone. More preferably, it is provided in one embodiment that the flow is diverted downward into the suction area. In another preferred embodiment, the water in the suction zone is introduced into the water return channel. The suction area is preferably designed so that the water is sucked down.

An advantage of the proposed device is that the water is circulated with a very low energy expenditure, at the same time forming a standing wave in the wave area.

In another embodiment, it is expected that the suction area is at least approximately as long as the wave area in the direction of flow. In another embodiment, provision is made for the suction area and / or the wave area to be from about three to about six meters in length, preferably from about four to about five meters. A large suction area offers the advantage that water can be reintroduced into the compartment with little loss of energy, the momentum of the water flow or the inertia of the water, more preferably l kinetic energy, being usable even after the change of direction of the water flow.

In another embodiment, it is expected that the suction area is at least approximately as wide as the wave area perpendicular to the direction of flow and perpendicular to the vertical axis of the device.

In another embodiment, provision is made for the suction zone to have at least one retaining device. The retaining device is preferably presented as a set of bars, a grid, a trellis, a perforated sheet and / or an expanded metal. In a particularly preferred manner, the retaining device has a plurality of orifices or interstices through which the water can preferably be conducted with a low loss of energy. In particular, the retaining device is designed so that a user of the device cannot pass through its orifices or interstices. The retaining device is preferably designed as a grid or a

------- lattice-and-may-in particular-present-a-mesh-dimension-allowing-to-retain --- 15 a person, more preferably a child, safely and without risk of injury , so that it or it cannot be sucked into the water return channel. More preferably, it is intended that the orifices or interstices of the retainers have opening widths of from about 0.5 cm to about 12 cm, preferably from about 2 cm to about 10 cm and more preferably from about

3 cm. An advantage of the retainer is that a user of the restraint cannot be accidentally dragged into the return water channel.

In a particularly preferred embodiment, one or more restraint devices are designed redundantly. Preferably, the suction zone comprises at least two retaining devices which are arranged in particular one behind the other or one below the other in the direction of flow. The retaining devices can be designed in the same or different manner, in particular having different mesh dimensions.

In another embodiment, it is provided that the retaining device is arranged in an angle of inclination opening upwards in the direction of flow relative to a horizontal plane constituted for example by a bottom of the zone waves. Preferably, the retainer is arranged so that it is easy to get out of it. The retainer has, in one embodiment, an angle of about 10 ° to about 30 °, preferably about 20 ° relative to a horizontal plane. Such an angle facilitates the exit of the device over the wall situated on the downstream side. Preferably, an exit aid device is placed on the wall on the downstream side.

The angle of inclination relative to a horizontal plane opens according to the invention upwards during the intended use of the device. Preferably, the angle of inclination is oriented upwards in the direction of flow, in particular so that the retaining device is higher on the side oriented towards the wall situated on the downstream side than on the side oriented towards the area of waves.

In another embodiment, it is expected that the compartment has a pumping chamber, an intermediate chamber and a discharge device.

In another embodiment, it is expected that the compartment has a pumping chamber, an intermediate chamber and a discharge device. Preferably, the pumping chamber, the intermediate chamber and / or the evacuation device are not clearly separated, but rather are zones of the compartment.

In one embodiment, the compartment, in particular the pumping chamber, has at least one pump. In another embodiment, it is provided that at least one pump for sucking water in particular from the return channel is placed in the pumping chamber. The at least one pump is preferably arranged in the compartment. In another embodiment, the pump is arranged in the water return channel. The pump is preferably a circulation pump.

In another embodiment, the pump is a positive displacement pump, for example an Archimedes screw. Preferably, the device has from about 2 to about 10 pumps, preferably from about 2 to about 6 pumps and more preferably 4 or 5 pumps. In another embodiment, it is provided that the number of pumps and / or the power of the at least one pump are defined so that an ideal flow rate can be achieved. In another embodiment, it is provided that an ideal pressure can be generated in the compartment by means of at least one pump.

Preferably, the compartment is divided so that the water from the pumping chamber flows through the intermediate chamber into the discharge device.

In another embodiment, it is provided that the evacuation device has an evacuation chamber having a height which is reduced iteratively and / or gradually in the evacuation direction. Preferably, the evacuation chamber acts as a nozzle. For the rest, the discharge device is configured as described above, for example with regard to the flow rectifier.

In another embodiment, it is expected that the compartment is an open channel. Preferably, a relative rise in the water level can be produced in the open channel of the compartment, in particular by using the pumps or by supplying water for example from a watercourse. The relative rise in the water level in the compartment, in particular in the open-channel of the compartment, is preferably obtained with the pumps. In one embodiment, the pumps carry enough water for the water level to rise in the compartment above a discharge opening. In another embodiment, water is supplied in addition to or in place in the compartment, for example by placing the device in a stream. Preferably, the compartment is sufficiently supplied with water so that a substantially constant water level over a period of time is obtained in the open channel of the compartment. Preferably, the volume of water supplied is substantially equivalent to a volume of water flowing in particular through the discharge device. More preferably, the pressure of the pumps and / or the opening height of the evacuation device are controllable or adjustable.

In another embodiment, it is expected that the compartment is a pressure line. Unlike the open line, the compartment designed as a pressure line is closed upwards, pressure can be generated in the compartment, in particular by means of pumps. It is in particular provided in one embodiment that an ideal water pressure can be generated in the compartment. More preferably, it is expected that an ideal water pressure is presented in the discharge device, in particular in the discharge opening of the discharge device. The water pressure in the discharge device or in the discharge opening can be produced both by a relative rise in the water level in the open channel above the height of the discharge device and by the generation of pressure in the compartment designed as a pressure line. The relative rise in water level is produced by pumps or by the supply of water, for example from a watercourse.

In another embodiment, it is intended that the intermediate chamber of a water pipe comprises a section between a pump space and a discharge device, by means of which a direction of the vector of the flow in the compartment can be changed. In one embodiment, it is provided that the water pipe is arranged in a compartment designed as a pressure pipe. By water pipe, it is preferably meant a geometry of the compartment or of a part of the compartment, in particular of the intermediate chamber, by means of which the water supplied to the compartment is led to the evacuation device. The water pipe preferably includes a ceiling of the intermediate chamber. In one embodiment, the water pipe has at least a first section which in particular conducts the water so that the direction of flow is changed. The advantage is that, in this way, the loss of kinetic energy of the water is as small as possible.

In another embodiment, it is expected that the water pipe has at least a first section with at least two subsections, a change in the direction of the water flow from about 5 'to about 45 ° , preferably from about 10 ° to about 45 ° and more preferably from about 30 ° to about 45 ° obtainable by means of the subsections.

Preferably, the first section can be designed so that it is divided into at least two sub-sections which preferably form an angle between them. More preferably, the section is divided into subsections which are preferably distinguished by an angle between the normals of their surfaces. In another embodiment, a subsection has a straight section, this section may have a round, rectangular or other shape in cross section relative to the direction of flow.

In another embodiment, provision is made for the water pipe to have at least a second curved section. It is notably provided in one embodiment that the modification of the direction of flow takes place gradually over an extension of the second curved section.

In another embodiment, it is expected that the drainage device has nnA laroatir nArnAnrlimlairp à la Hirartinn rl'érniilomui nui rnrrocnnnH concîhlomont to the width of the compartment, the wave basin and / or a ramp arranged between the device and the wave basin.

In another embodiment, it is provided that the evacuation device has a discharge opening with a variable opening height. The opening height is preferably adjustable between 0 cm and 100 cm and more preferably between 20 cm and 80 cm.

In another form of realization, it is provided that the suction zone is situated in front of a wall delimiting the wave basin downstream in the direction of flow. In one embodiment, provision is made for the downstream delimitation wall to comprise a substantially rectilinear vertical wall. The downstream boundary wall defines the wave basin on the downstream side. In another embodiment, provision is made for the downstream delimitation wall to have a curvature and / or a radius, in particular for deviating the vector from the direction of flow, and / or is divided into segments whose surface normals form an angle of about 5 ° to about 45 ° and preferably about 30 ° to about 45 °. A wall which deflects the water in this way makes it possible to operate the device efficiently by providing as little energy as possible to accelerate the water because the inertia of the water or its kinetic energy is used optimally.

A method is also proposed for producing a standing wave in a device as described above, a flow being produced in a wave basin and this method comprising:

the provision of a wave basin with a wave area and a suction area located behind, the provision of a compartment with a drainage device which has a drainage opening, water being introduced into the wave basin through the discharge opening,

- the supply of a water return channel which is connected, in particular directly, to the suction zone and to the compartment, and the supply of water to the compartment.

In another embodiment, it is expected that at least one pump is provided. Preferably, it is provided that the at least one pump is provided in the compartment. In another embodiment, it is provided that the at least one pump is provided in the water return channel. In a preferred embodiment, provision is made for water to be supplied to the compartment by means of the at least one pump.

In another embodiment, it is provided that the water introduced into the compartment is soothed by means of an open channel. Preferably, the compartment is open upward at least in large part. In one embodiment, the compartment has a grid, a perforated plate or a mesh which allows it to communicate with the ambient pressure of the device. In another embodiment, it is provided that the compartment designed as an open channel acts as a diffuser. In another embodiment, provision is made for a horizontal section of the compartment to widen or enlarge upwards.

In another embodiment, provision is made for a column of water to be formed in the open channel of the compartment above the discharge device. The water column above the discharge device in the open channel preferably determines the pressure in the discharge device. The water column is preferably maintained by a continuous flow of water into the compartment, preferably substantially constantly at a certain height. The height of the water column can be changed by modifying the inflow of water or the opening height of the drainage device.

In another preferred embodiment, it is provided that the pumps are controlled or regulated so that the water column above the discharge device in the open channel remains substantially constant. In particular, it is provided in one embodiment that the at least one pump is regulated so that the column of water above the discharge device in the open channel remains substantially constant even in the event of a change in height opening the discharge opening. In another embodiment, it is provided that the pump is controlled or regulated so that the pressure in the compartment designed as a pressure line or in the evacuation device, in particular preferably in the evacuation opening of the latter remains substantially constant. More preferably, the pump is controlled or regulated so that the pressure in the discharge device or in the discharge opening remains substantially constant even when the opening height of the discharge opening is changed.

Preferably, a regulating quantity, in particular for regulating the at least one pump and / or for the opening height, is chosen from a set comprising at least the wave height, the water pressure in the device outlet, the water column in the compartment and / or the water flow rate, i.e. the quantity or volume of water per unit of time in the drainage device. Of —preference, -a magnifier-ofreference, -especiallyfor the regulation-of-the-at least one pump and / or for the opening height, is selected from a set comprising at least the flow of water in the compartment, the pump pressure, the number of pumps used, the power consumed by the pumps used and / or the opening height of the evacuation device. In one embodiment, it is intended that the pumps are controlled by means of an adjustment device. In another embodiment, it is provided that the opening height of the discharge opening, in particular the position of the blade, is controlled by means of an adjustment device.

In another embodiment, it is intended that a wave characteristic, preferably a wave height, more preferably a depth of water at a location in the wave area or the wave pool, is regulated through an opening height of the discharge opening and / or a quantity of water introduced into the compartment. Preferably, the amount of water introduced is regulated by controlling the pump.

In another embodiment, it is provided that the water introduced into the compartment is guided to the evacuation device by a water pipe. Preferably, it is provided in one embodiment that the water pipe has at least a first section with at least two subsections which cause a change in direction of the water flow from about 5 ° to about 45 °, preferably from about 10 'to about 45 ° and more preferably from about 30' to about 45 °.

In another embodiment, it is provided that the water pipe has at least a second curved section with which the change of direction of the water flow takes place in a curve. Preferably, the direction of flow in the second curved section is gradually changed over the extent of the section in the direction of flow in the water pipe.

In another embodiment, it is provided that the water is sucked from the wave basin via the suction zone and led into the compartment. Preferably, the water in the suction area is drawn down and, more preferably, conducted through the water return channel. In another preferred embodiment, it is provided that the water in the suction zone is conducted by at least one retaining device, and preferably by exactly two retaining devices.

The expression in particular or in particular indicates, within the meaning of the invention, a tolerance range to be considered from an economic and technical point of view by a person skilled in the art, on which the corresponding characteristic can still be considered as such or achieved .

When the term approximately is used within the framework of the invention in connection with values or ranges of value, it indicates a range of tolerance which the person skilled in the art considers normal in this field; a tolerance range of ± 20%, preferably + 10%, and more preferably ± 5% is in particular provided.

The terms of direction before and after or behind must be understood in relation to the direction of flow. Relative position indications such as above and below must be understood, unless otherwise indicated, in the direction of the intended use of the device in the direction of the axis of gravity. Height is an extension in the direction of the axis of gravity. The vertical axis of the device is parallel to the axis of gravity during the intended use of the device. The width is an extent perpendicular to the axis of gravity and perpendicular to the direction of flow. The length is an extent in the direction of flow.

An extension in width is an extension of the evacuation opening of the device due to Ramng, haccin à vaoiiQC of / ηιι do la larrtA nornondiriilaîmrrionf a la vv / ww .w. ** »· >> v- p * '-. <- ···% .. ''. w direction of evacuation of the evacuation device and perpendicular to the opening height. More preferably, an extension in width of the device is an extension perpendicular to the direction of flow and perpendicular to the axis of gravity.

In particular, the extent in width of the discharge opening, the ramp, the wave basin and / or the blade is in the direction of the width of the device.

According to the invention, by direction of flow is meant the direction in which the water flows essentially after the evacuation of the evacuation device. Preferably, unless otherwise indicated ^ the direction-of-flow-isHa direction in which the water flows essentially between a pump and a suction area of the wave basin.

Preferably, the direction of discharge is the direction of the flow vector which is predefined by the discharge device. In particular, the direction of evacuation is the direction of flow in the evacuation device. More preferably, the direction of discharge is the direction of flow immediately behind the discharge device. In another embodiment, provision is made for the direction of discharge to be the direction of flow in the discharge device and immediately behind the discharge device.

Within the meaning of the invention, a change in the direction of the flow means a change in the direction of the velocity vector.

For the purposes of the invention, the term standing wave is understood to mean a wave which is formed in particular by an obstacle in the water flowing in the device in operation. The crest of the standing wave remains in substantially the same place under constant marginal conditions, such as for example a defined flow velocity and a defined obstacle height. A standing wave within the meaning of the invention is not a lapping. On the standing wave produced with the device, it is preferably possible to surf, for example with a surfboard, a bodyboard or a kayak.

By adjustment or control is meant a process in which a variable quantity, the adjustment quantity, is continuously recorded, compared with another variable quantity, the reference quantity, and modified in the direction of an adaptation to the reference quantity .

Within the meaning of the invention, a longitudinal section is a sectional view which traverses the device along the direction of flow. In the sense of the invention, a cross section is a sectional view which traverses the device perpendicular to the direction of flow.

Within the meaning of the invention, an open channel is a means of flow with a free water level. In particular, the compartment has at least one section which is designed as an open channel, that is to say open upwards.

Within the meaning of the invention, a diffuser is an element or a section which slows down the flow of water and in particular increases the pressure of the liquid. Preferably, the kinetic energy is transformed into pressure energy by means of the diffuser. The diffuser is preferably designed so that the flow is delayed in particular in the compartment. Preferably, the diffuser has a constant or non-constant extension of the flow section.

By soothing the water, it is meant that the water turbulence is reduced to produce a laminar flow.

By impact flow is meant according to the invention a flow whose flow speed is greater than the speed of propagation of a disturbance in the flow. In a striking flow, the Fraud number F _r = v / (gL) ^0.5 is> 1, where v is the flow speed, L a characteristic quantity and g the acceleration of gravity. In one embodiment, the characteristic quantity L is the depth of water on a ramp or on a surface immediately after leaving the discharge device.

Within the meaning of the invention, a surface is said to be plane when it is preferably between two imaginary planes parallel to each other, separated by a distance of approximately 0.15 mm to approximately 10 mm, preferably approximately 0.15 mm to about 5 mm, and more preferably from about 0.15 mm to about 1 mm.

According to the invention, by connection, and in particular by communicating connection, is meant a connection of the sections of the device between which a fluid, in particular water, can flow. In particular, the sections are connected directly to each other. The communicating link can have at least two sections open at the top, at least one section open at the top and at least one section closed at the top and / or at least two sections closed at the top.

Preferably, the devices for producing a stationary wave described above can be combined with the discharge device to produce a laminar flow described above, the discharge chamber described above, the flow straightener described above, the blade described above. above, the wave basin described above, the water return channel described above, the compartment described above, the ramp described above and / or the obstacle described above.

More preferably, the discharge device for producing a laminar flow described above can be combined with the discharge chamber described above, the flow straightener described above, the blade described above, the pelvis wave described above, the return water channel described above, the compartment described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above -above.

More preferably, the discharge chamber described above can be combined with the discharge device to produce a laminar flow described above, the flow straightener described above, the blade described above, the pelvis wave described above, the return water channel described above, the compartment described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above -above.

More preferably, the flow straightener described above can be combined with the discharge chamber described above, the discharge device for producing a laminar flow described above, the blade described above, the pelvis wave described above, the return water channel described above, the compartment described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above -above.

More preferably, the blade described above can be combined with the flow straightener described above, the discharge chamber described above, the discharge device for producing a laminar flow described above, the basin wave described above, the return water channel described above, the compartment described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above -above.

More preferably, the wave basin described above can be combined with the blade described above, the flow straightener described above, the discharge chamber described above, the discharge device for producing a laminar flow described above, the return water channel described above, ie compartment described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above -above.

More preferably, the water return channel described above can be combined with the wave basin described above, the blade described above, the flow straightener described above, the discharge chamber described above, the discharge device for producing a laminar flow described above, the compartment described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above -above.

More preferably, the compartment described above can be combined with the return water channel described above, the wave basin described above, the blade described above, the flow straightener described above, the evacuation chamber described above, the evacuation device for producing a laminar flow described above, the ramp described above, the obstacle described above and / or the devices for producing a standing wave described above.

More preferably, the ramp described above can be combined with the compartment described above, the return water channel described above, the wave basin described above, the blade described above, the rectifier flow described above, the discharge chamber described above, the discharge device for producing a laminar flow described above, the obstacle described above and / or the devices for producing a standing wave described above.

More preferably, the obstacle described above can be combined with the ramp described above, the compartment described above, the water return channel described above, the wave basin described above, the blade described above, the flow straightener described above, the discharge chamber described above, the discharge device for producing a laminar flow described above and / or the devices for producing a standing wave described above. ------------- 15

An embodiment of a device for producing a standing wave is described below by way of example:

The example device includes a wave basin in which a ramp and an obstacle are provided. The wave pool further includes a wave area and a suction area. The suction area is covered by a retaining device. In addition, the example device has a compartment in which a water pressure is established and from which water comes out which is conducted on the ramp.

Preferably, the wave basin has a delimiting wall on the downstream side. In addition, the wave basin has two lateral boundary walls.

The ramp and the obstacle are adjacent to each other and have an interface that spans the entire width of the pool.

In one embodiment, the compartment is designed as a pressure line. The compartment is closed upwards by means of a ceiling. In the compartment there is at least one pump which draws water from the water return channel. Water pressure is created in the compartment.

The compartment is divided into a pumping chamber in which there is a pump and an intermediate chamber situated behind which causes a change in the direction of flow and directs the water into the evacuation device. Water flows on the ramp and the obstacle, in the wave pool or in the wave area where it gives rise to a standing wave. Then the water flows into the suction area where it undergoes a change of direction, first downwards, then against the direction of flow in the return water channel. This gives rise to water circulation.

In another embodiment of the compartment, it is intended that the compartment is designed as an open channel. The pump in the pumping chamber transports the water from the return water channel and creates in the open channel of the compartment a column of water which corresponds to the height of the surface of the water in the open channel above the discharge opening of the discharge device. In this embodiment, the intermediate chamber corresponds to the open channel in which the water is soothed. The water in the intermediate chamber flows by gravity into the evacuation device, and from there on the ramp and on the obstacle. Behind the obstacle, the wave is created in the wave area.

To simplify the description, we will assume a flow direction which goes essentially from the evacuation device to the suction area of the wave basin. According to a preferred embodiment, exactly four pumps are placed in the compartment. In the discharge device is a flow straightener which reduces the turbulence of the water flow and in particular produces a laminar flow. Behind the evacuation device is the ramp, immediately followed by the obstacle. The ramp is sloping in the direction of flow and the obstacle is curved. The ramp and in particular the obstacle are placed in the wave pool, the wave zone connecting behind the obstacle, followed by the suction zone. It should be noted that the retainer ascending in the direction of flow is placed in the suction zone. Under the compartment and the wave basin is the water return channel through which water returns from the suction area to the compartment. The wave basin is enclosed downstream by a boundary wall.

The evacuation device has an evacuation chamber. The discharge chamber has an interior height which decreases in the direction of flow. This decrease in the direction of flow produces a nozzle effect and therefore an acceleration of the water flowing through the discharge device. In addition, a discharge opening is associated with a blade which is movable along a vertical axis of the example device. The opening height of the discharge opening is determined by the blade. The opening height is the distance between a lower limit of the discharge opening and a cutting edge of the blade. A wall of evacuation space which forms the bottom of the evacuation chamber is without stalling, and in particular level with a ramp placed behind the evacuation device.

A flow rectifier is located in the discharge chamber. The flow rectifier has substantially horizontal guide plates and substantially vertical guide plates. The vertical guide plates extend over the height of the discharge chamber. The vertical guide plates are arranged parallel to the wall of the discharge chamber. The vertical guide plate has a distance from the wall of the evacuation chamber forming the bottom of about 20 cm. At least two vertical guide plates have a distance of about 20 cm between them. The horizontal guide plates are arranged substantially parallel to each other. Furthermore, the vertical guide plates are arranged substantially parallel to each other. At least two horizontal guide plates are arranged one behind the other and have a distance of about 25 cm between them.

The suction zone is adjacent to the wave zone and is notably characterized in that it has a greater depth of basin than the wave zone. The suction zone is in communication with the water return channel which, in a preferred embodiment, has a plurality of partial channels arranged in parallel. The suction area presents the retainer which is designed as a perforated plate. The retainer extends from one end of the wave zone to a boundary wall on the downstream side of the example device. The retainer forms an angle with the horizontal, in particular so that it is possible to exit the wave basin in the direction of flow over the retainer.

Four pumps are located in the pumping area of the compartment. The intermediate chamber has a ceiling which is designed as a water pipe. The water pipe has two sections which form an angle between them and which conduct the water in the evacuation device with the least loss of pressure and speed. The evacuation device has the flow rectifier which soothes the water and in particular creates a laminar flow. The water is directed among other things by the flow straightener in the direction of evacuation and led on the ramp through the evacuation opening. The blade is arranged behind the discharge opening of the discharge device in the direction of flow.

The discharge opening has a width which corresponds substantially to the width of the blade and to the width of the ramp. The water return channel includes three parallel partial channels. In particular, it is intended that the walls of the water return channel support the ramp.

The blade has a blade height which is greater than the opening height of the discharge opening, in particular for completely covering the latter. Preferably, the blade height is 70 cm. The cutting edge has a bevel on the downstream side. The angle of the cutting edge relative to the blade height is approximately 45 °. Furthermore, the cutting edge, in particular the bevel, is designed so that the angle relative to the direction of flow is approximately 45 °.

Both the ramp and the obstacle are arranged in the wave basin. The ramp is directly adjacent to the discharge opening of the discharge device. In particular, the evacuation wall forming the bottom penetrates level into the ramp. The ramp includes a first water flow surface. The obstacle includes a second water flow surface. The ramp and the obstacle are adjacent to each other at the interface. At the interface, the slope of the first water flow surface of the ramp is substantially identical to the slope of the second water flow surface of the obstacle. The obstacle is designed in the form of a springboard and has in particular a curvature which descends to a point of inflection which constitutes its lowest point and rises after the point of inflection.

The obstacle has a stalling edge which in particular has a height of stalling edge at pertsr from the bottom of! A ζοπθ waves of about ZS cm. The obstruction presents a deflector which is associated with the stall edge. The deflector may be provided, but is not essential. It can be adjusted at a variable angle to a horizontal plane. The deflector also has a length which is in particular approximately 20 cm. The angle is preferably adjustable in the direction of flow above the horizontal plane. The height of the obstacle with the deflector, which in particular has a positive angle, that is to say an angle above the horizontal plane, is approximately 30 cm.

Another exemplary embodiment includes a device described above for —producing-a-standing-wave-with-at-least-one-described-discharge-device “above to produce a laminar flow. The discharge device for producing a laminar flow comprises a discharge chamber described above, the discharge device comprising in the discharge chamber a flow straightener described above with a plurality of guide plates described above. The evacuation device described above has a blade described above with a cutting edge described above. The blade is arranged in an evacuation opening described above of the evacuation device, the opening height described above of the evacuation device and in particular of the evacuation opening being defined by a distance from the bottom. described above of the discharge device with respect to the cutting edge. The example device includes a wave basin described above, a water return channel described above and a compartment described above. The wave basin comprises a wave zone described above and a suction zone described above, the suction zone being arranged behind the wave zone in the direction of flow and in particular connected in communicating manner with the channel. water return. The water return channel is notably connected in a communicating manner to the compartment, the compartment having a drainage device which has a drainage opening through which water can be led into the wave basin. The example device includes a ramp described above and an obstacle described above. The ramp has a water flow surface described above, substantially planar in longitudinal section. The obstacle has a water flow surface described above, substantially curved in longitudinal section. The ramp and the obstacle are adjacent to each other. At the interface described above, the water flow surfaces of the ramp and the obstacle have substantially the same slope, a longitudinal section.

Other advantageous embodiments appear from the drawings below. The improvements represented therein should not be interpreted restrictively; on the contrary, the features described can be combined with one another and with the features described above to create other embodiments. Furthermore, it should be noted that the reference signs indicated in the description of the figures do not restrict the protective field of the present invention, but only refer to the examples of embodiments shown in the figures. Identical elements or elements having the same function are designated below by the same reference sign. The figures are as follows:

Fig. 1 view of a device for producing a standing wave,

Fig. 2 two variants of the device with a closed or open compartment,

Fig. 3 longitudinal section of the device,

Fig. 4 detailed view in longitudinal section of the device,

Fig. 5 cross-section of the suction zone of the device,

Fig. 6 detailed section view of the compartment,

Fig. 7 cross-sectional view of the device showing the compartment seen from the wave basin,

Fig. 8 view in longitudinal section of the device blade,

Fig. 9 detailed longitudinal section view of the device with the ramp and the obstacle and

Fig. 10 schematic sectional view of a variant of the compartment.

Fig. 1 shows a device 10 for producing a standing wave comprising a wave basin 16 in which are arranged a ramp 78 and an obstacle 100. The wave basin 16 also includes a wave zone 22 and a suction zone 24. The suction zone 24 is covered by a retaining device 28 which serves in particular to prevent the suction of objects and / or people in a water return channel not visible here. It can also be seen in FIG. 1 a compartment 20 in which a water pressure is generated and from which water comes out which is conducted on the ramp 78.

The wave basin 16 has a downstream delimitation wall 26.1 (see Fig. 3) which, in this view, is covered by the retaining device. In addition, the wave basin 16 has two lateral delimiting walls 26.2 and 26.3 which delimit a width of the wave basin 16. —— - „——

In Fig. 1, it can also be seen that the ramp 78 and the obstacle 100 are adjacent to each other at an interface 102 which extends over the entire width of the basin.

Fig. 2A is a schematic longitudinal sectional view of the device 10 on which the compartment 20 is designed as a pressure line. The compartment is closed upwards by a ceiling 37. In the compartment 20 is arranged at least one pump 34 which draws water from the water return channel 18. A pressure of water is generated in the compartment 20.

The compartment 20 is divided into a pumping chamber in which the pump 34 is installed and an intermediate chamber 39 located behind which causes a change in direction of the flow and conducts the water in the evacuation device 36. The water flows via the ramp 78 and the obstacle 100 into the wave basin 16 or into the wave zone 22, where it gives rise to a standing wave 12. Then, the water flows into the suction zone 24, where it undergoes a change of direction first downwards, then against the direction of flow 30 - which is illustrated in FIG. 3 - in the water return channel 18. This gives rise to a circulation of water which is represented by the arrows 14.1, 14.2 and 14.3.

Fig. 2B shows a longitudinal section through the device 10 with another embodiment of the compartment, the compartment 20 being designed as an open channel at the top. The pump 34 in the pumping chamber 38 transports the water from the return water channel 18 and creates in the open channel of the compartment 20 a column of water 48 which corresponds to the height of the surface of the water in the open channel above the discharge opening 60 of the discharge device 36. In this embodiment, the intermediate chamber 39 corresponds to the open channel in which the water is soothed. The water in the intermediate chamber 39 flows by gravity into the evacuation device 36, and through the evacuation device 36, on the ramp 78 and on the obstacle 100. Behind the obstacle 100, the wave 12 is created in the wave area

22.

Fig. 3 shows a longitudinal section through the device 10. To simplify the description, we will admit a flow direction 30 which goes essentially from the discharge device 36 to the suction zone 24 of the wave basin. In Fig. 3, it can be seen that a plurality of pumps 34, in this case exactly 4 pumps, are installed in the compartment. Still in Fig. 3, it can be seen that in the discharge device 36 there is a flow straightener 84 which reduces the turbulence of the water flow and in particular produces a laminar flow. Behind the evacuation device 36 is the ramp 78, immediately followed by the obstacle 100. As can be seen in FIG. 3, the ramp 78 is sloping in the direction of flow 30 and the obstacle 100 is curved. The ramp 78 and in particular the obstacle 100 are placed in the wave basin 16, the wave area 22 connecting behind the obstacle 100, followed by the suction area 24. It should be noted that the ascending retainer 28 in the direction of flow 30 is placed in the suction zone 24. Under the compartment 20 and the wave basin 16 is the water return channel 18 through which the water returns from the suction zone 24 to compartment 36. The wave basin 16 is closed downstream by a delimiting wall 26.1.

Fig. 4 shows a detailed view in longitudinal section of the discharge device 36. It should be noted that the discharge device 36 has a discharge chamber 80. The discharge chamber 80 has an interior height 82 which decreases in the direction d 'flow. This decrease in the direction of flow produces a nozzle effect and therefore an acceleration of the water flowing through the discharge device 36. In addition, with a discharge opening 60 is associated a blade 50 which is movable along a vertical axis 58 of the device. The opening height 62 of the discharge opening 60 is determined by the blade 50. The opening height 62 is the distance between a lower limit of the discharge opening 64 and a cutting edge 54 of the blade 50 In FIG. 4, it can also be seen that an evacuation space wall 94 which forms the bottom of the evacuation chamber 80 is connected without detachment to a ramp 70 placed behind the evacuation device 36. The blade 50 has one side facing downstream 70.

Fig. 4 shows in detail the flow rectifier 84 installed in the evacuation chamber 80. The flow rectifier 84 has substantially horizontal guide plates 86 and substantially vertical guide plates 88. The pldquesdeguidage-vertieales-88-s 'extend-over-a-height-of-evacuation-SZ— The vertical guide plates 86 are arranged parallel to the wall of evacuation space 94. The vertical guide plate 86.1 has a distance 92 relative to the wall d 'evacuation space 94 forming the bottom of about 20 cm. The vertical guide plates 88.1 and 88.2 have a distance 90 of about 20 cm between them. The horizontal guide plates 86 are arranged substantially parallel to each other. Furthermore, the vertical guide plates 88 are arranged substantially parallel to one another. Horizontal guide plates

86.2 and 86.3 are arranged one behind the other and have a distance 93 of about 25 cm between them.

Fig. 5 shows in detail a sectional view of the wave basin 16 with the suction zone 24. The suction zone 24 is adjacent to the wave zone 22 and is notably characterized in that it has a greater depth of basin as the wave area 22. The suction area is in communication with the water return channel 18 which, in the embodiment shown, has a plurality of partial channels arranged in parallel. The suction zone 24 presents the retaining device 28 which is designed as a perforated plate. The retaining device 28 extends from one end of the wave zone 22 to a delimiting wall on the downstream side 26.1 of the device 10. The retaining device 28 forms an angle 32 with the horizontal 33, in particular of so that it is possible to exit from the wave basin 16 in the direction of flow over the retainer 28. This makes it easier to exit, for example after a session of surfing on the standing wave or after a fall . This furthermore avoids being flattened painfully by the flow against the delimiting wall on the downstream side 26.1. On the contrary, the user is rejected as on a shallow bank which is represented by the retaining device 28.

Fig. 6 shows a detailed view in longitudinal section of the compartment 20. It will be noted that four pumps 34 are arranged in the pumping zone 38. We can also see in FIG. 6 that the intermediate chamber 39 has a ceiling 37 which is designed as a water pipe 40. The water pipe 40 has two sections 44 and 46 which form an angle between them and which conduct the water in the device evacuation 36 with the least loss of pressure and speed possible. The discharge device 36 has the flow rectifier 84 which soothes the water and in particular creates a laminar flow. The water is directed inter alia by the flow straightener 84 in the direction of evacuation 74 and led on the ramp 78 through the evacuation opening 60. The blade 50 is disposed behind the evacuation opening 60 of the discharge device 36 in the direction of flow.

Fig. 7 shows a cross-sectional view of the device 10 with a view of the compartment 20. Note the ramp 78. The discharge opening 60 has a width 66 which corresponds substantially to the width of the blade 50 and to the width of the ramp 78. Furthermore, one can see in FIG. 7 that the water return channel 18 comprises three parallel partial channels. It is in particular provided that the walls 19 of the water return channel 18 support the ramp 78.

Fig. 8 individually shows the blade 50 in longitudinal section through the device 10, the blade 50 having one side facing downstream 70 and one side facing upstream 71. The blade 50 also has a blade height 56 which is greater than the opening height 62 (see FIG. 4) of the discharge opening 60, in particular to completely cover the latter. Preferably, the blade height is 70 cm. It can also be seen in FIG. 8 that the cutting edge 54 has a bevel 68 on the downward-facing side 70. The angle 73 of the cutting edge 54 relative to the height of the blade 56 is approximately 45 °. Furthermore, the cutting edge54, in particular the bevel 68, is designed so that the angle 72 with respect to the direction of flow 74 is approximately 45 °.

Fig. 9 shows in detail another longitudinal section of the device 10 with the ramp »» ***> 70 IfSV. / * - »Vfk rt · ΐ <» »» /> fA JL ME wave 16. The ramp 78 is directly adjacent to the discharge opening 60 of the discharge device 36. In particular, the discharge wall forming the bottom 94 extends the ramp 78. The ramp 78 includes a first water flow surface 104. The obstacle 100 includes a second water flow surface 106. The ramp

78 and the obstacle 100 are adjacent to each other at the interface 102. It can be seen in FIG. 9 that at the interface 102, the slope of the first water flow surface 104 of the ramp 78 is substantially identical to the slope of the second water flow surface 106 of the obstacle 100 The obstacle 100 is designed in the form of a springboard and has in particular a curvature which descends to a point of inflection 107 which constitutes its lowest point and rises after the point of inflection

107.

The obstacle 100 has a stall edge 108 which in particular has a height of stall edge 114 from the bottom of the wave zone 22 of approximately

25 cm. The obstacle has a deflector 110 which is associated with the stall edge

108. The deflector 110 can be provided, but is not essential, it can be adjusted at a variable angle 116 relative to a horizontal plane 117. The deflector 110 also has a length 118 which is in particular about 20 cm . The angle 116 is preferably adjustable in the direction of flow above the horizontal plane 117.

The height 112 of the obstacle 100 with the deflector 110, which has in particular a positive angle 116, that is to say an angle 116 above the horizontal plane 117, is approximately 30 cm.

Fig. 10 shows a schematic view of another compartment 20. The compartment has a ceiling 37 forming a water pipe 40 which has a curved section 46. The change of direction over an extent of the curved section 46 is therefore gradual. In particular, the water is conducted with a gradual change of direction of flow between a pumping chamber 38 and a discharge device 36. One can also see diagrammatically in FIG. 10 a flow straightener 84, the blade 50 and, as suggested, the ramp 78.

Claims (10)

Claims 1. Device (10) for generating a standing wave (12) comprising a wave basin (16) with a ramp (78), an obstacle (100) and a wave area (22), in which said ramp (78) has a substantially planar flow surface (104) in longitudinal section and in which the obstacle (100) has a substantially curved flow surface (106) in longitudinal section, in which the ramp (78) and the obstacle ( 100) are adjacent at one point, so that at this point the flow surfaces (104, 106) of the ramp (78) and the obstacle (100) have substantially the same slope in longitudinal section (104 ). 2. Device (10) according to claim 1, characterized in that the ramp (78) is sloping in a flow direction (30). 3. Device (10) according to one or more of the preceding claims, characterized in that the ramp (78) is inclined from about 5 ° to about 20 °. 4. Device (10) according to one or more of the preceding claims, characterized in that the ramp has a length of approximately 3m to approximately 5m. 5. Device (10) according to one or more of the preceding claims, characterized in that the flow surface (106) of the obstacle (100) has a stall stop (108). 6. Device (10) according to one or more of the preceding claims, characterized in that the obstacle (100) is associated with a deflector (110). 7. Device (10) according to claim 6, characterized in that the deflector (110) comprises an angle of attack (116) from 0 ⁰ to 45 ° upwards relative to the horizontal. 8. Device (10) according to one or more of claims 6 to 7, characterized in that the angle of attack (116) is adjustable. 9. Device (10) according to one or more of claims 6 to 8, characterized in that the deflector (110) has a length (118) of about 5 cm to about 40 cm. 10. Device (10) according to one or more of the preceding claims, characterized in that Its height of the obstacle (112) extends above the lowest point Se of the flow surface (106) of the obstacle (100) from about 20 cm to about 50 cm. 306 523 ⁹ 2/9