EP2979735A1 - Device for producing a current in a swimming pool and system for swimming against the current using said device - Google Patents

Device for producing a current in a swimming pool and system for swimming against the current using said device Download PDF

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Publication number
EP2979735A1
EP2979735A1 EP15177717.4A EP15177717A EP2979735A1 EP 2979735 A1 EP2979735 A1 EP 2979735A1 EP 15177717 A EP15177717 A EP 15177717A EP 2979735 A1 EP2979735 A1 EP 2979735A1
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EP
European Patent Office
Prior art keywords
current
injection
dome
basin
producing
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.)
Granted
Application number
EP15177717.4A
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German (de)
French (fr)
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EP2979735B1 (en
Inventor
Florian Arot
Marc Dejey
Jean-Louis Desjoyaux
Jean-Baptiste Noirot
Thibault PARIN
Céline SAGE
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Piscines Desjoyaux SA
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Piscines Desjoyaux SA
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Publication of EP2979735A1 publication Critical patent/EP2979735A1/en
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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
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/12—Arrangements in swimming pools for teaching swimming or for training
    • A63B69/125—Devices for generating a current of water 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
    • 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
    • E04H4/14—Parts, details or accessories not otherwise provided for
    • E04H4/16—Parts, details or accessories not otherwise provided for specially adapted for cleaning
    • E04H4/169—Pool nozzles

Definitions

  • the present invention relates to a device for producing current in a pond, and a counter-current swimming system employing this device.
  • the documents FR2672331 and FR 2589954 describe counter-current swimming systems in which water is pumped back into a pool to form a current strong enough to practice stationary swimming.
  • stationary swimming is meant a swim whose progression, relative to the edge of the pelvis, is limited.
  • a strong current prevents the swimmer from going back to the power source with too much ease.
  • the quality of the current supplied is related to the flow rate of the discharged water.
  • the discharge of the water in the basin is obtained by a pump with a high flow rate, for example from 30 to 50 m 3 per hour, or by a combination of several pumps.
  • a more powerful current, to further improve the performance of the counter-current swimming system, can be achieved by providing the pool with a pump at increased flow.
  • such an approach is not always desirable because it is expensive.
  • the document FR2867500 discloses a device for increasing the flow rate of a water jet by Venturi effect.
  • the increased flow corresponds, according to this document, to the needs required for the practice of swimming against the current.
  • experience shows that this device is not very effective in forming a powerful current.
  • An object of the invention and therefore to provide a device for producing a current in a basin overcomes the drawbacks of the state of the art.
  • the invention proposes a device for producing a current in a basin, the current being formed from a primary flow and a return current, the device comprising a dome element having on the side of its top means of injection of the primary flow so that it passes through the dome element and opens into the basin.
  • the dome element is configured to generate a complementary current in the direction of the primary flow during the flow on its outer walls of the return current.
  • the primary flow can be formed in the basin at high speed, and, in combination with the complementary current, develop a powerful current without requiring the implementation of a pump of more high flow rate or a second pump.
  • the dome element has an aeronautical profile. This profile promotes the development of a current complementary to the primary flow, by flow on the outer walls of the dome element of a return current.
  • the injection means comprise an injection conduit penetrating into the dome element.
  • the injection duct may be provided at its end with an injection nozzle.
  • the nozzle and the injection conduit are dismountably assembled.
  • the swimmer can form a primary flow adapted to his level or his desire.
  • the invention also relates to a counter-current swimming system comprising the device for producing a current as defined above.
  • the figure 1 represents a counter-current swimming system comprising a device 2 for producing a current, immersed in a basin. It may be for example a swimming pool.
  • the counter-current swimming system is provided with a pump 3, filtration means 4, a suction duct 5 and a discharge duct 6. These elements are arranged in combination in any suitable manner and able to ensure the circulation of a current in the pool of the pool.
  • the pump 3, the filtration means 4, the suction duct 5 and the discharge duct 6 may in particular be mounted inside a compact filtration unit as described in the document FR2672331 cited in the preamble of this application.
  • the pump 3 can be operated at a first sufficient flow, for example of the order of 25 m 3 per hour, to maintain the pool water in a desired state of cleanliness.
  • It can also be operated at a second rate, greater than the first rate, for example between 30 and 50 cubic meters per hour, so as to allow in combination with the device 2 for producing a current, the creation of a current powerful enough to practice swimming against the current.
  • the device 2 for producing a current is connected to the discharge pipe 6 and is immersed in the basin.
  • a current C develops in the basin 1, for example in the form of gyratory movements such as that represented on the figure 1 .
  • the stream C consists of a first part A, called primary stream, directly formed by the jet of water from the current generating device 2. This primary flow is directed towards the swimmer, and comes into contact therewith .
  • Current C also consists of a return current B1, B2.
  • the device 2 for producing electricity comprises a dome element 7.
  • dome element means an element with substantially convex walls and defining a confined interior space.
  • the element has a vertex 7a and an opening 7b on the opposite side to the vertex 7a.
  • the dome element 7 has, on the side of its top 7a, means for injecting the primary flow A so that it passes through the dome and opens into the basin.
  • the injection means consist of an opening arranged at the top 7a of the dome element 7 and adjusted to be connected to the delivery duct 6.
  • the flow primary A is in this case directly from this conduit, through the dome and leads into the basin.
  • the dome element 7 defines in its interior a confined environment, protected from disturbances, parasitic currents, water movements caused in particular by the return current B1, B2. This confined environment then allows the primary stream A to deploy fully, at full speed.
  • full speed is meant that the speed of the primary flow A from the dome element 7 is greater than the speed of a flow that would be generated in the absence of the dome element 7.
  • this comparison must be made equivalent means ie for the same power of the pump 3, the same duct 6 discharge, and the same discharge nozzle when it is present.
  • the inventors of the present application have determined that a high flow rate of the water stream C, although necessary, is not a sufficient condition to form a current powerful enough to practice swimming against the current.
  • the speed of this current is a preponderant factor.
  • the force applied to the swimmer by the current opposes, and ideally compensates, the propulsive force that this swimmer produces.
  • the drag is proportional to the square of the relative speed of the current relative to the swimmer.
  • the figure 2 represents a side and close view of the current generating device 2.
  • the dome element 7 also makes it possible to generate a complementary current C1, C2 to the primary flow A.
  • This complementary current C1, C2 corresponds to the recirculation of the return current B1, B2 in the direction of the primary flow.
  • A This phenomenon is facilitated by the outer walls 2a, 2b of the dome element 7 on which the return currents B1, B2 and complementary C1, C2 flow, and by the suction effect created by the flow. primary A.
  • the complementary current C1, C2 contributes to the formation of a powerful current C well adapted to swimming against the current, providing a flow complementary to that of the primary flow.
  • the current generating device 2 is immersed in the basin so that the primary flow A is generated 10 to 20 cm below the surface of the water. This configuration makes it possible to generate a current sufficiently close to the surface to come to apply to the swimmer, and far enough away from it to minimize the swirls and splashes that could be generated by this current and indispose the swimmer.
  • the delivery duct 6 is generally positioned at a fixed and pre-established position of the wall of the basin, the adjustment of the immersion depth of the device 2 for the production of current can be carried out by providing it with a duct 8 of injection tunable to the discharge duct 6 and adjustable in height.
  • the counter-current swimming system according to the invention is therefore based on the device 2 for producing a current, the detailed description of which is the subject of the following paragraphs.
  • the figure 3 represents a particularly advantageous configuration of the device 2 for producing a current.
  • this device comprises a dome element 7 having on the side of its top 7a of injection means 8, 9 of the primary flow A.
  • the dome element 7 has an aeronautical profile. It is recalled that the profile of a body, in the sense of fluid mechanics, designates the contour of the section parallel to the flow of the fluid surrounding it. An aerodynamic profile designates a profile ensuring an essentially laminar flow of the water flow, and limiting the formation of turbulence. Thus, a significant portion of the return current B1, B2 flows and is accelerated at the outer walls 2a, and 2b to form the complementary current C1, C2.
  • a suitable profile of the dome element 7 can be determined on the basis of preexisting profiles tables or databases, by numerical simulation and / or on the basis of wind tunnel or basin tests.
  • an acceptable profile makes it possible to transform a major part of the return current B1, B2 into complementary current C1, C2.
  • the main opening 7b of the cupola opposite its top 7a, has a oblong section, the longest dimension of this section being in the basin plan.
  • This particular form makes it possible to form a complementary current C1, C2 with efficiency. It may be for example an opening 7b having an ellipsoidal section.
  • the top 7a of the dome element 7 is provided with injection means 8,9 of the primary flow of water through the dome and opening into the basin.
  • these means comprise an injection conduit 8 which can be connected by a first end 8a to the discharge pipe 6, and penetrating by its other end 8b inside the dome element 7.
  • the injection conduit 8 thus makes it possible to generate the primary flow A at a controlled position inside the dome element 7. In this way, the primary flow A develops fully, in an area particularly protected from disturbances. As such, it is preferable that the injection conduit 8 penetrates substantially into the dome element 7.
  • the injection pipe 8 may be provided at its end 8b, inside the dome element 7, with an injection nozzle 9. primary flow rate A with respect to the flow velocity in the delivery duct 6.
  • the nozzle has an opening 9a of smaller section than the section of the conduit 6 flow.
  • the speed of the primary flow A can be chosen by choosing the area of the section of the opening 9a.
  • the opening 9a of the injection nozzle is positioned in the center of the dome element 7 and slightly set back from its opening 7b.
  • the section of the opening 9a of the nozzle 9 is also chosen to give a useful shape to the primary flow A.
  • useful shape means a shape generating a current which to effectively apply a significant drag to the swimmer. It is recalled that the drag is proportional to the contact area between the current and the swimmer. In order to be effective, it will therefore be sought to obtain a primary flow of relatively large section at the level of the swimmer, without the latter exceeding the typical dimensions of a swimmer.
  • the section of the opening 9a of the nozzle 9 has a contour of oblong shape, for example substantially rectangular and rounded corners.
  • the longest dimension of the outline lies in the basin plan.
  • the primary flow A generated by such a nozzle is thus uniformly distributed over the torso of the swimmer.
  • the section of the opening 9a of the nozzle 9 has a T-shaped contour.
  • a primary flow A is formed which is distributed over the torso and the trunk of the swimmer, thus applying a particularly important drag.
  • the injection nozzle 9 is mounted on the conduit 8 injection removably. A swimmer may then provide the injection conduit 8 with a nozzle 9 which will form a primary flow A adapted to its level or desire.
  • the injection conduit 8 and the injection nozzle 9 are for example assembled by a bayonet connection mechanism. As shown on the Figures 4a and 4b , the injection nozzle 9 is thus provided with lugs 10 which cooperate with notches (not shown) of the injection conduit 8 to allow their assembly.
  • the injection conduit 8 is articulated so as to direct the primary flow A and the complementary current C1, C2 in the basin.
  • This articulation may, for example, make it possible to orient the primary flow A and the complementary flow C1, C2 towards the bottom of the basin or towards the surface of the water.
  • the injection conduit 8 may consist of two curved segments of conduit 12a, 12b, connected to each other so as to form a bend, and pivotally in the direction P of the figure 3 .
  • a third curved duct segment 12c may also be connected to the assembly to form a second elbow, fixed or swivel, as shown in FIG. figure 3 .
  • the second end 8a of the injection conduit 8 is adapted to be connected to the delivery duct 6.
  • the discharge pipe 6 may comprise at its end a discharge nozzle 13 for propelling a jet of water and circulate the water in the basin in the absence of the device 2 for production of current.
  • This discharge nozzle 13 is generally incorporated in the wall of the basin or compact filtration unit and is provided with a ball joint to allow the orientation of the water jet in any desired direction.
  • the current generating device 2 can be connected to the discharge nozzle 13 by means of a clamping nut 14.
  • This nut has a large bearing surface 15 which can be placed on the wall of the nozzle. basin or the filter block and thus preventing any movement of the ball of the discharge nozzle 13.
  • the device 2 for producing current in the basin is thus fixed.
  • the device 2 for producing a current is coupled to the discharge pipe 6 of a basin, it is conceivable that it is coupled to any other device or means capable of forming the primary flow A.
  • the means used to keep the device 2 producing current immersed in the pond fixed may be any and adapted to the intended application.
  • the device 2 for producing a current can also find other applications, in hydrotherapy for example or in test tanks hulls .

Abstract

L'invention concerne un dispositif (2) de production d'un courant dans un bassin, le courant étant formé à partir d'un flux primaire (A) et d'un courant complémentaire (B1, B2), comprenant un élément (7) en coupole comportant, du côté de son sommet (7a), des moyens d'injection du flux primaire (A) afin qu'il traverse l'élément (7) en coupole et débouche dans le bassin. L'invention concerne également un système de nage à contre-courant comprenant, immergé dans un bassin (1), ce dispositif de production d'un courant.The invention relates to a device (2) for producing a current in a basin, the current being formed from a primary flow (A) and a complementary current (B1, B2), comprising an element (7). dome having, on the side of its top (7a), means for injecting the primary flow (A) so that it passes through the dome element (7) and opens into the basin. The invention also relates to a counter-current swimming system comprising, immersed in a basin (1), this device for producing a current.

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne un dispositif de production de courant dans un bassin, ainsi qu'un système de nage à contre-courant employant ce dispositif.The present invention relates to a device for producing current in a pond, and a counter-current swimming system employing this device.

ARRIERE PLAN TECHNOLOGIQUE DE L'INVENTIONBACKGROUND OF THE INVENTION

Les documents FR2672331 et FR 2589954 décrivent des systèmes de nage à contre-courant dans lesquelles de l'eau est refoulée dans le bassin d'une piscine pour former un courant suffisamment puissant pour y pratiquer une nage stationnaire. Par nage stationnaire on signifie une nage dont la progression, par rapport au bord du bassin, est limitée. Un courant puissant empêche ainsi le nageur de remonter vers la source de courant avec trop de facilité.The documents FR2672331 and FR 2589954 describe counter-current swimming systems in which water is pumped back into a pool to form a current strong enough to practice stationary swimming. By stationary swimming is meant a swim whose progression, relative to the edge of the pelvis, is limited. A strong current prevents the swimmer from going back to the power source with too much ease.

On connaît également de EP1589165 , US2008148470 et DE202012003162 des dispositifs d'injection d'eau dans un bassin.We also know EP1589165 , US2008148470 and DE202012003162 water injection devices in a basin.

Il apparaît de l'état de la technique que la qualité du courant fourni est liée au débit de l'eau refoulée. Le refoulement de l'eau dans le bassin est obtenu par une pompe à fort débit, par exemple de 30 à 50 m3 par heure, ou par une combinaison de plusieurs pompes. Un courant plus puissant, pour améliorer encore les performances du système de nage à contre-courant, peut être réalisé en munissant le bassin d'une pompe au débit accru. Toutefois, une telle approche n'est pas toujours souhaitable, car elle est coûteuse.It appears from the state of the art that the quality of the current supplied is related to the flow rate of the discharged water. The discharge of the water in the basin is obtained by a pump with a high flow rate, for example from 30 to 50 m 3 per hour, or by a combination of several pumps. A more powerful current, to further improve the performance of the counter-current swimming system, can be achieved by providing the pool with a pump at increased flow. However, such an approach is not always desirable because it is expensive.

Le document FR2867500 divulgue un dispositif d'augmentation du débit d'un jet d'eau par effet Venturi. Le débit augmenté correspond, selon ce document, aux besoins requis pour la pratique de la nage à contre-courant. L'expérience montre toutefois que ce dispositif est peu efficace pour former un courant puissant.The document FR2867500 discloses a device for increasing the flow rate of a water jet by Venturi effect. The increased flow corresponds, according to this document, to the needs required for the practice of swimming against the current. However, experience shows that this device is not very effective in forming a powerful current.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Un but de l'invention et donc de proposer un dispositif de production d'un courant dans un bassin remédiant aux inconvénients de l'état de la technique.An object of the invention and therefore to provide a device for producing a current in a basin overcomes the drawbacks of the state of the art.

BREVE DESCRIPTION DE L'INVENTIONBRIEF DESCRIPTION OF THE INVENTION

À cet effet, l'invention propose un dispositif de production d'un courant dans un bassin, le courant étant formé à partir d'un flux primaire et d'un courant de retour, le dispositif comprenant un élément en coupole comportant du côté de son sommet des moyens d'injection du flux primaire afin qu'il traverse l'élément en coupole et débouche dans le bassin. L'élément en coupole est configuré pour générer un courant complémentaire dans la direction du flux primaire lors de l'écoulement sur ses parois extérieurs du courant de retour.For this purpose, the invention proposes a device for producing a current in a basin, the current being formed from a primary flow and a return current, the device comprising a dome element having on the side of its top means of injection of the primary flow so that it passes through the dome element and opens into the basin. The dome element is configured to generate a complementary current in the direction of the primary flow during the flow on its outer walls of the return current.

Ainsi protégé de son environnement par l'élément en coupole, le flux primaire peut se former dans le bassin à grande vitesse, et, en combinaison avec le courant complémentaire, développer un courant puissant sans nécessiter la mise en oeuvre d'une pompe de plus fort débit ou d'une seconde pompe.Thus protected from its environment by the dome element, the primary flow can be formed in the basin at high speed, and, in combination with the complementary current, develop a powerful current without requiring the implementation of a pump of more high flow rate or a second pump.

Avantageusement, l'élément en coupole présente un profil aéronautique. Ce profil favorise le développement d'un courant complémentaire au flux primaire, par écoulement sur les parois extérieures de l'élément en coupole d'un courant de retour.Advantageously, the dome element has an aeronautical profile. This profile promotes the development of a current complementary to the primary flow, by flow on the outer walls of the dome element of a return current.

Dans un mode particulier de mise en oeuvre, les moyens d'injection comprennent un conduit d'injection pénétrant dans l'élément en coupole. Le conduit d'injection peut être muni à son extrémité d'une buse d'injection. Ainsi, il est possible de former un flux primaire présentant une vitesse importante, et généré à une position contrôlée à l'intérieur de la coupole. Il est notamment possible de positionner la buse d'injection à une distance déterminée de l'ouverture de la coupole.In a particular mode of implementation, the injection means comprise an injection conduit penetrating into the dome element. The injection duct may be provided at its end with an injection nozzle. Thus, it is possible to form a primary flow having a high speed, and generated at a controlled position inside the dome. In particular, it is possible to position the injection nozzle at a determined distance from the opening of the dome.

Dans un autre mode particulier de mise en oeuvre, la buse et le conduit d'injection sont assemblés de manière démontable. Ainsi, le nageur peut former un flux primaire adapté à son niveau ou à son désir.In another particular mode of implementation, the nozzle and the injection conduit are dismountably assembled. Thus, the swimmer can form a primary flow adapted to his level or his desire.

L'invention porte également sur un système de nage à contre-courant comprenant le dispositif de production d'un courant tel que défini ci-dessus.The invention also relates to a counter-current swimming system comprising the device for producing a current as defined above.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaîtront dans la description qui va suivre des modes de mise en oeuvre du dispositif de production d'un courant dans un bassin et du système de nage à contre-courant, donnés à titre d'exemples non limitatifs en référence aux figures ci-jointes parmi lesquelles:

  • la figure 1 représente un système de nage à contre-courant comprenant un dispositif de production d'un courant, immergé dans un bassin;
  • la figure 2 représente une vue latérale et rapprochée du dispositif de production de courant;
  • la figure 3 représente une configuration particulièrement avantageuse du dispositif de production d'un courant;
  • les figures 4a et 4b représentent deux variantes de buses d'injection.
Other features and advantages of the invention will appear in the following description of the modes of implementation of the device for producing a current in a basin and the counter-current swimming system, given by way of examples. nonlimiting with reference to the attached figures among which:
  • the figure 1 represents a counter-current swimming system comprising a device for producing a current, immersed in a basin;
  • the figure 2 represents a side and close view of the current generating device;
  • the figure 3 represents a particularly advantageous configuration of the device for producing a current;
  • the Figures 4a and 4b represent two variants of injection nozzles.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

Par souci de simplification de la description à venir, les mêmes références sont utilisées pour des éléments identiques ou assurant la même fonction dans les différents modes de mise en oeuvre exposés de l'invention.For the sake of simplification of the description to come, the same references are used for identical elements or ensuring the same function in the various exposed embodiments of the invention.

La figure 1 représente un système de nage à contre-courant comprenant un dispositif 2 de production d'un courant, immergé dans un bassin. Il peut s'agir par exemple d'un bassin de piscine.The figure 1 represents a counter-current swimming system comprising a device 2 for producing a current, immersed in a basin. It may be for example a swimming pool.

Le système de nage à contre-courant est muni d'une pompe 3, des moyens de filtration 4, d'un conduit d'aspiration 5 et d'un conduit de refoulement 6. Ces éléments sont disposés en combinaison de toute manière convenable et apte à assurer la circulation d'un courant dans le bassin de la piscine. La pompe 3, les moyens de filtration 4, le conduit d'aspiration 5 et le conduit de refoulement 6 peuvent notamment être montés à l'intérieur d'un bloc compact de filtration comme cela est décrit dans le document FR2672331 cité en préambule de cette demande.The counter-current swimming system is provided with a pump 3, filtration means 4, a suction duct 5 and a discharge duct 6. These elements are arranged in combination in any suitable manner and able to ensure the circulation of a current in the pool of the pool. The pump 3, the filtration means 4, the suction duct 5 and the discharge duct 6 may in particular be mounted inside a compact filtration unit as described in the document FR2672331 cited in the preamble of this application.

La pompe 3 peut être opérée à un premier débit suffisant, par exemple de l'ordre de 25 m3 par heure, pour maintenir l'eau du bassin dans un état de propreté désiré.The pump 3 can be operated at a first sufficient flow, for example of the order of 25 m 3 per hour, to maintain the pool water in a desired state of cleanliness.

Elle peut également être opérée à un second débit, supérieur au premier débit, par exemple compris entre 30 et 50 mètres cubes par heure, de manière à permettre en combinaison avec le dispositif 2 de production d'un courant, la création d'un courant suffisamment puissant pour pratiquer la nage à contre-courant.It can also be operated at a second rate, greater than the first rate, for example between 30 and 50 cubic meters per hour, so as to allow in combination with the device 2 for producing a current, the creation of a current powerful enough to practice swimming against the current.

Dans le mode de mise en oeuvre de l'invention représenté sur la figure 1, le dispositif 2 de production d'un courant est connecté au conduit 6 de refoulement et est immergé dans le bassin.In the embodiment of the invention shown in the figure 1 , the device 2 for producing a current is connected to the discharge pipe 6 and is immersed in the basin.

En mode de fonctionnement pour la nage en contre-courant, c'est-à-dire lorsque la pompe 3 est mise en opération au débit supérieur, un courant C se développe dans le bassin 1, par exemple sous la forme de mouvements giratoires tels que représentés sur la figure 1.In operating mode for swimming against the current, that is to say when the pump 3 is put into operation at the higher flow rate, a current C develops in the basin 1, for example in the form of gyratory movements such as that represented on the figure 1 .

Le courant C est constitué d'une première partie A, appelé flux primaire, directement formé par le jet d'eau issu du dispositif de production de courant 2. Ce flux primaire est dirigé vers le nageur, et vient en contact avec celui-ci.The stream C consists of a first part A, called primary stream, directly formed by the jet of water from the current generating device 2. This primary flow is directed towards the swimmer, and comes into contact therewith .

Le courant C est également constitué d'un courant de retour B1, B2.Current C also consists of a return current B1, B2.

Le dispositif 2 de production de courant comprend un élément 7 en coupole. Par « élément en coupole » on désigne un élément aux parois sensiblement convexes et définissant un espace intérieur confiné. L'élément présente un sommet 7a et une ouverture 7b du côté opposé au sommet 7a.The device 2 for producing electricity comprises a dome element 7. By "dome element" means an element with substantially convex walls and defining a confined interior space. The element has a vertex 7a and an opening 7b on the opposite side to the vertex 7a.

L'élément 7 en coupole comporte, du côté de son sommet 7a, de moyens d'injection du flux primaire A afin qu'il traverse la coupole et débouche dans le bassin.The dome element 7 has, on the side of its top 7a, means for injecting the primary flow A so that it passes through the dome and opens into the basin.

Dans le mode de mise en oeuvre représenté schématiquement sur la figure 1, les moyens d'injection consistent en une ouverture aménagée au niveau du sommet 7a de l'élément 7 en coupole et ajustée pour être connectée au conduit 6 de refoulement. Le flux primaire A est dans ce cas directement issu de ce conduit, traverse la coupole et débouche dans le bassin.In the embodiment shown diagrammatically on the figure 1 , the injection means consist of an opening arranged at the top 7a of the dome element 7 and adjusted to be connected to the delivery duct 6. The flow primary A is in this case directly from this conduit, through the dome and leads into the basin.

L'élément 7 en coupole permet de définir en son intérieur un environnement confiné, protégé des perturbations, courants parasites, mouvements d'eau provoqués notamment par le courant de retour B1, B2. Cet environnement confiné permet alors au flux primaire A de se déployer pleinement, à pleine vitesse.The dome element 7 defines in its interior a confined environment, protected from disturbances, parasitic currents, water movements caused in particular by the return current B1, B2. This confined environment then allows the primary stream A to deploy fully, at full speed.

Par « pleine vitesse » on signifie que la vitesse du flux primaire A issu de l'élément 7 en coupole est supérieure à la vitesse d'un flux qui serait généré en l'absence de l'élément 7 en coupole. Bien entendu, cette comparaison doit s'effectuer à moyens équivalents c'est à dire pour une même puissance de la pompe 3, un même conduit 6 de refoulement, et une même buse de refoulement lorsque celle-ci est présente.By "full speed" is meant that the speed of the primary flow A from the dome element 7 is greater than the speed of a flow that would be generated in the absence of the dome element 7. Of course, this comparison must be made equivalent means ie for the same power of the pump 3, the same duct 6 discharge, and the same discharge nozzle when it is present.

Les inventeurs de la présente demande ont déterminé qu'un débit important du courant C d'eau, bien que nécessaire, n'était pas une condition suffisante pour former un courant suffisamment puissant pour pratiquer la nage à contre-courant. Les expérimentations conduites par les inventeurs ont déterminé que la vitesse de ce courant est un facteur prépondérant. En effet, au cours de la nage, la force appliquée sur le nageur par le courant (la traînée) s'oppose, et idéalement compense, la force de propulsion que ce nageur produit. Or, la traînée est proportionnelle au carré de la vitesse relative du courant par rapport au nageur.The inventors of the present application have determined that a high flow rate of the water stream C, although necessary, is not a sufficient condition to form a current powerful enough to practice swimming against the current. Experiments conducted by the inventors have determined that the speed of this current is a preponderant factor. In fact, during swimming, the force applied to the swimmer by the current (the drag) opposes, and ideally compensates, the propulsive force that this swimmer produces. However, the drag is proportional to the square of the relative speed of the current relative to the swimmer.

Un flux primaire A non ralenti par son environnement, dont le déploiement est protégé par l'élément 7 en coupole, assure d'appliquer une traînée maximum sur le nageur et empêche ainsi celui-ci de remonter vers la source du courant avec trop de facilité.A primary flow A not slowed by its environment, whose deployment is protected by the dome element 7, ensures to apply a maximum drag on the swimmer and prevents it from going back to the source of the current with too much ease .

On comprend ainsi que la solution mettant en oeuvre un système Venturi pour fournir un débit supérieur au débit du conduit 6 de refoulement, comme enseigné par le document FR2867500 , ne peut convenir. Dans un tel système en effet, l'augmentation du débit d'eau fourni s'obtient principalement par augmentation de la section du jet d'eau et au détriment de sa vitesse.It is thus understood that the solution implementing a Venturi system to provide a flow rate greater than the flow rate of the delivery duct 6, as taught by the document FR2867500 , can not agree. In such a system indeed, the increase in the flow of water supplied is obtained mainly by increasing the section of the water jet and at the expense of its speed.

La figure 2 représente une vue latérale et rapprochée du dispositif 2 de production de courant. Comme représenté sur cette figure, l'élément 7 en coupole permet également de générer un courant complémentaire C1, C2 au flux primaire A. Ce courant complémentaire C1, C2 correspond à la recirculation du courant de retour B1, B2 dans la direction du flux primaire A. Ce phénomène est facilité par les parois extérieures 2a, 2b de l'élément 7 en coupole sur lesquels les courants de retour B1, B2 et complémentaires C1, C2 s'écoulent, et par l'effet d'aspiration créé par le flux primaire A.The figure 2 represents a side and close view of the current generating device 2. As represented in this figure, the dome element 7 also makes it possible to generate a complementary current C1, C2 to the primary flow A. This complementary current C1, C2 corresponds to the recirculation of the return current B1, B2 in the direction of the primary flow. A. This phenomenon is facilitated by the outer walls 2a, 2b of the dome element 7 on which the return currents B1, B2 and complementary C1, C2 flow, and by the suction effect created by the flow. primary A.

Le courant complémentaire C1, C2 contribue à la formation d'un courant C puissant bien adapté à la nage à contre-courant, en apportant un débit complémentaire à celui du flux primaire.The complementary current C1, C2 contributes to the formation of a powerful current C well adapted to swimming against the current, providing a flow complementary to that of the primary flow.

Dans un mode de mise en oeuvre particulier, le dispositif 2 de production de courant est immergé dans le bassin de sorte que le flux primaire A soit généré 10 à 20 cm sous la surface de l'eau. Cette configuration permet de générer un courant suffisamment proche de la surface pour venir s'appliquer sur le nageur, et suffisamment éloigné de celle-ci pour minimiser les remous et éclaboussures qui pourrait être généré par ce courant et indisposer le nageur.In a particular embodiment, the current generating device 2 is immersed in the basin so that the primary flow A is generated 10 to 20 cm below the surface of the water. This configuration makes it possible to generate a current sufficiently close to the surface to come to apply to the swimmer, and far enough away from it to minimize the swirls and splashes that could be generated by this current and indispose the swimmer.

Le conduit de refoulement 6 étant généralement positionné à un endroit fixe et préétabli de la paroi du bassin, l'ajustement de la profondeur d'immersion du dispositif 2 de production de courant peut-être réalisé en munissant celui-ci d'un conduit 8 d'injection accordable au conduit du refoulement 6 et ajustable en hauteur.Since the delivery duct 6 is generally positioned at a fixed and pre-established position of the wall of the basin, the adjustment of the immersion depth of the device 2 for the production of current can be carried out by providing it with a duct 8 of injection tunable to the discharge duct 6 and adjustable in height.

Le système de nage à contre-courant conforme à l'invention repose donc sur le dispositif 2 de production d'un courant, dont la description détaillée fait l'objet des paragraphes qui suivent.The counter-current swimming system according to the invention is therefore based on the device 2 for producing a current, the detailed description of which is the subject of the following paragraphs.

La figure 3 représente une configuration particulièrement avantageuse du dispositif 2 de production d'un courant. Ainsi, que cela a déjà été commenté, ce dispositif comporte un élément 7 en coupole comportant du côté de son sommet 7a de moyens d'injection 8, 9 du flux primaire A.The figure 3 represents a particularly advantageous configuration of the device 2 for producing a current. Thus, that this has already been commented, this device comprises a dome element 7 having on the side of its top 7a of injection means 8, 9 of the primary flow A.

Dans un mode préféré de mise en oeuvre, l'élément 7 en coupole présente un profil aéronautique. On rappelle que le profil d'un corps, au sens de la mécanique des fluides, désigne le contour de la section parallèle à l'écoulement du fluide qui l'environne. Un profil aérodynamique désigne un profil assurant un écoulement essentiellement laminaire du flux d'eau, et limitant la formation de turbulences. Ainsi, une partie importante du courant de retour B1, B2 s'écoule et est accéléré au niveau des parois extérieures 2a, et 2b pour former le courant complémentaire C1, C2.In a preferred embodiment, the dome element 7 has an aeronautical profile. It is recalled that the profile of a body, in the sense of fluid mechanics, designates the contour of the section parallel to the flow of the fluid surrounding it. An aerodynamic profile designates a profile ensuring an essentially laminar flow of the water flow, and limiting the formation of turbulence. Thus, a significant portion of the return current B1, B2 flows and is accelerated at the outer walls 2a, and 2b to form the complementary current C1, C2.

Dans le cas du dispositif 2 de production de courant, un profil de l'élément 7 en coupole qui convient peut-être déterminé en se fondant sur des tables ou bases de données préexistantes de profils, par simulation numérique et/ou sur la base d'essais en soufflerie ou en bassin.In the case of the current generating device 2, a suitable profile of the dome element 7 can be determined on the basis of preexisting profiles tables or databases, by numerical simulation and / or on the basis of wind tunnel or basin tests.

D'une manière générale, un profil acceptable permet de transformer une majeure partie du courant de retour B1, B2 en courant complémentaire C1, C2.In general, an acceptable profile makes it possible to transform a major part of the return current B1, B2 into complementary current C1, C2.

Dans un mode préféré de mise en oeuvre, l'ouverture 7b principale de la coupole, opposée à son sommet 7a, présente une section oblongue, la dimension la plus longue de cette section se situant dans le plan du bassin. Cette forme particulière permet de former un courant complémentaire C1, C2 avec efficacité. Il peut s'agir par exemple d'une ouverture 7b présentant une section ellipsoïdale.In a preferred embodiment, the main opening 7b of the cupola, opposite its top 7a, has a oblong section, the longest dimension of this section being in the basin plan. This particular form makes it possible to form a complementary current C1, C2 with efficiency. It may be for example an opening 7b having an ellipsoidal section.

Comme cela est représenté sur la figure 3, le sommet 7a de l'élément 7 en coupole est muni de moyens d'injection 8,9 du flux primaire d'eau traversant la coupole et débouchant dans le bassin. De manière avantageuse, ces moyens comprennent un conduit 8 d'injection pouvant être raccordé par une première extrémité 8a au conduit 6 de refoulement, et pénétrant par son autre extrémité 8b à l'intérieur de l'élément 7 en coupole. Le conduit 8 d'injection permet ainsi de générer le flux primaire A à une position contrôlée à l'intérieur de l'élément 7 en coupole. De cette manière, le flux primaire A se développe pleinement, dans une zone particulièrement protégée des perturbations. À ce titre, il est préférable que le conduit 8 d'injection pénètre sensiblement dans l'élément 7 en coupole.As shown on the figure 3 the top 7a of the dome element 7 is provided with injection means 8,9 of the primary flow of water through the dome and opening into the basin. Advantageously, these means comprise an injection conduit 8 which can be connected by a first end 8a to the discharge pipe 6, and penetrating by its other end 8b inside the dome element 7. The injection conduit 8 thus makes it possible to generate the primary flow A at a controlled position inside the dome element 7. In this way, the primary flow A develops fully, in an area particularly protected from disturbances. As such, it is preferable that the injection conduit 8 penetrates substantially into the dome element 7.

De manière additionnelle, le conduit 8 d'injection peut être muni à son extrémité 8b, à l'intérieur de l'élément 7 en coupole, d'une buse d'injection 9. Celle-ci a pour première fonction d'augmenter la vitesse de flux primaire A par rapport à la vitesse d'écoulement dans le conduit 6 de refoulement. À cette fin, la buse présente une ouverture 9a de section plus petite que la section du conduit 6 d'écoulement. Et la vitesse du flux primaire A peut être choisie, en choisissant la surface de la section de l'ouverture 9a. De préférence, l'ouverture 9a de la buse d'injection est positionnée au centre de l'élément 7 en coupole et légèrement en retrait de son ouverture 7b.In addition, the injection pipe 8 may be provided at its end 8b, inside the dome element 7, with an injection nozzle 9. primary flow rate A with respect to the flow velocity in the delivery duct 6. For this purpose, the nozzle has an opening 9a of smaller section than the section of the conduit 6 flow. And the speed of the primary flow A can be chosen by choosing the area of the section of the opening 9a. Preferably, the opening 9a of the injection nozzle is positioned in the center of the dome element 7 and slightly set back from its opening 7b.

La section de l'ouverture 9a de la buse 9 est également choisie pour conférer une forme utile au flux primaire A. Par « forme utile », on signifie une forme générant un courant qui permette d'appliquer efficacement une traînée importante sur le nageur. On rappelle que la traînée est proportionnelle à la surface de contact entre le courant et le nageur. On cherchera donc, par souci d'efficacité, à obtenir un flux primaire de section relativement importante au niveau du nageur, sans pour autant que celle-ci n'excède les dimensions typiques d'un nageur.The section of the opening 9a of the nozzle 9 is also chosen to give a useful shape to the primary flow A. By "useful shape" means a shape generating a current which to effectively apply a significant drag to the swimmer. It is recalled that the drag is proportional to the contact area between the current and the swimmer. In order to be effective, it will therefore be sought to obtain a primary flow of relatively large section at the level of the swimmer, without the latter exceeding the typical dimensions of a swimmer.

Dans un premier exemple de forme utile, représentée sur la figure 4a, la section de l'ouverture 9a de la buse 9 présente un contour de forme oblongue, par exemple essentiellement rectangulaire et aux coins arrondis. La dimension la plus longue du contour réside dans le plan du bassin. Le flux primaire A généré par une telle buse se répartit ainsi uniformément sur le torse du nageur.In a first example of a useful form, represented on the figure 4a , the section of the opening 9a of the nozzle 9 has a contour of oblong shape, for example substantially rectangular and rounded corners. The longest dimension of the outline lies in the basin plan. The primary flow A generated by such a nozzle is thus uniformly distributed over the torso of the swimmer.

Dans un second exemple de forme utile, représenté sur la figure 4b, la section de l'ouverture 9a de la buse 9 présente un contour en forme de T. En choisissant un tel contour, on forme un flux primaire A qui se répartit sur le torse et le tronc du nageur, appliquant ainsi une traînée particulièrement importante.In a second example of useful form, represented on the figure 4b the section of the opening 9a of the nozzle 9 has a T-shaped contour. By choosing such a contour, a primary flow A is formed which is distributed over the torso and the trunk of the swimmer, thus applying a particularly important drag. .

Dans un mode préféré de mise en oeuvre, la buse d'injection 9 est montée sur le conduit 8 d'injection de manière démontable. Un nageur pourra alors munir le conduit 8 d'injection d'une buse 9 qui permettra de former un flux primaire A adapté à son niveau ou à son désir. À cette fin, le conduit 8 d'injection et la buse 9 d'injection sont par exemple assemblés par un mécanisme de raccords à baïonnette. Ainsi que représenté sur les figures 4a et 4b, la buse 9 d'injection est ainsi munie d'ergots 10 qui coopèrent avec des encoches (non représentées) du conduit 8 d'injection pour permettre leur assemblage.In a preferred embodiment, the injection nozzle 9 is mounted on the conduit 8 injection removably. A swimmer may then provide the injection conduit 8 with a nozzle 9 which will form a primary flow A adapted to its level or desire. For this purpose, the injection conduit 8 and the injection nozzle 9 are for example assembled by a bayonet connection mechanism. As shown on the Figures 4a and 4b , the injection nozzle 9 is thus provided with lugs 10 which cooperate with notches (not shown) of the injection conduit 8 to allow their assembly.

Dans une configuration particulière, le conduit 8 d'injection est articulé de manière à pouvoir orienter le flux primaire A et le courant complémentaire C1, C2 dans le bassin. Cette articulation peut par exemple permettre d'orienter le flux primaire A et le courant complémentaire C1, C2 en direction du fond du bassin ou en direction de la surface de l'eau.In a particular configuration, the injection conduit 8 is articulated so as to direct the primary flow A and the complementary current C1, C2 in the basin. This articulation may, for example, make it possible to orient the primary flow A and the complementary flow C1, C2 towards the bottom of the basin or towards the surface of the water.

Pour ce faire, le conduit 8 d'injection peut être constitué de deux segments courbés de conduit 12a, 12b, reliés l'un à l'autre de manière à former un coude, et de façon pivotante selon la direction P de la figure 3. Un troisième segment courbe de conduit 12c peut également être relié à l'ensemble afin de former un second coude, fixe ou pivotant, comme cela est représenté sur la figure 3.To do this, the injection conduit 8 may consist of two curved segments of conduit 12a, 12b, connected to each other so as to form a bend, and pivotally in the direction P of the figure 3 . A third curved duct segment 12c may also be connected to the assembly to form a second elbow, fixed or swivel, as shown in FIG. figure 3 .

La seconde extrémité 8a du conduit 8 d'injection est adaptée pour être connectée au conduit 6 de refoulement. De manière bien connue en soi, le conduit 6 de refoulement peut comporter en son extrémité une buse de refoulement 13 permettant de propulser un jet d'eau et faire circuler l'eau dans le bassin en l'absence du dispositif 2 de production d'un courant. Cette buse 13 de refoulement est généralement incorporée dans la paroi du bassin ou du bloc compact de filtration et est munie d'une rotule afin de permettre l'orientation du jet d'eau dans une direction quelconque souhaitée. Dans une telle configuration, le dispositif 2 de production de courant peut être connecté à la buse 13 de refoulement par l'intermédiaire d'un écrou de serrage 14. Cet écrou présente une large surface d'appui 15 venant se placer sur la paroi du bassin ou du bloc de filtration et empêchant ainsi tout mouvement de la rotule de la buse de refoulement 13. On fixe de la sorte le dispositif 2 de production de courant dans le bassin.The second end 8a of the injection conduit 8 is adapted to be connected to the delivery duct 6. In a well known manner, the discharge pipe 6 may comprise at its end a discharge nozzle 13 for propelling a jet of water and circulate the water in the basin in the absence of the device 2 for production of current. This discharge nozzle 13 is generally incorporated in the wall of the basin or compact filtration unit and is provided with a ball joint to allow the orientation of the water jet in any desired direction. In such a configuration, the current generating device 2 can be connected to the discharge nozzle 13 by means of a clamping nut 14. This nut has a large bearing surface 15 which can be placed on the wall of the nozzle. basin or the filter block and thus preventing any movement of the ball of the discharge nozzle 13. The device 2 for producing current in the basin is thus fixed.

Bien entendu, l'invention n'est pas limitée aux modes de mise en oeuvre décrits et l'on peut y apporter des variantes de réalisation sans sortir du cadre de l'invention telle qu'elle est définie par les revendications.Of course, the invention is not limited to the embodiments described and it is possible to provide variants thereof. realization without departing from the scope of the invention as defined by the claims.

Notamment, et bien que l'on ait indiqué que le dispositif 2 de production d'un courant soit couplé au conduit 6 de refoulement d'un bassin, il est envisageable qu'il soit couplé à tout autre dispositif ou moyen apte à former le flux primaire A.In particular, and although it has been indicated that the device 2 for producing a current is coupled to the discharge pipe 6 of a basin, it is conceivable that it is coupled to any other device or means capable of forming the primary flow A.

De la même manière, les moyens utilisés pour maintenir fixe le dispositif 2 de production de courant immergé dans le bassin peuvent être quelconque et adaptés à l'application envisagée.In the same way, the means used to keep the device 2 producing current immersed in the pond fixed may be any and adapted to the intended application.

Outre son emploi dans un système de nage à contre-courant comme cela a été décrit dans le détail, le dispositif 2 de production d'un courant peut également trouver d'autres applications, en hydrothérapie par exemple ou en bassin d'essai des carènes.In addition to its use in a counter-current swimming system as has been described in detail, the device 2 for producing a current can also find other applications, in hydrotherapy for example or in test tanks hulls .

Claims (16)

Dispositif (2) de production d'un courant dans un bassin, le courant étant formé à partir d'un flux primaire (A) et d'un courant de retour (B1, B2), le dispositif (2) comprenant un élément (7) en coupole comportant, du côté de son sommet (7a), de moyens d'injection (8, 9) du flux primaire (A) afin qu'il traverse l'élément (7) en coupole et débouche dans le bassin caractérisé en ce que l'élément en coupole (7) est configuré pour générer un courant complémentaire (C1, C2) dans la direction du flux primaire (A) lors de l'écoulement sur ses parois extérieurs (2a, 2b) du courant de retour (B1, B2).Device (2) for producing a current in a basin, the current being formed from a primary flow (A) and a return current (B1, B2), the device (2) comprising an element ( 7) in dome having, on the side of its top (7a), injection means (8, 9) of the primary flow (A) so that it passes through the dome element (7) and opens into the basin characterized in that the cupola element (7) is configured to generate a complementary current (C1, C2) in the direction of the primary flow (A) during the flow on its outer walls (2a, 2b) of the return flow. (B1, B2). Dispositif (2) selon la revendication précédente caractérisé en ce que l'élément (7) en coupole présente un profil aérodynamique.Device (2) according to the preceding claim characterized in that the element (7) dome has an aerodynamic profile. Dispositif (2) selon l'une des revendications précédentes caractérisé en ce que l'ouverture (7b) de l'élément (7) en coupole présente une section oblongue.Device (2) according to one of the preceding claims, characterized in that the opening (7b) of the dome element (7) has an oblong section. Dispositif (2) selon la revendication précédente caractérisé en ce que l'élément (7) en coupole présente une ouverture (7b) de section ellipsoïdale.Device (2) according to the preceding claim characterized in that the element (7) dome has an opening (7b) of ellipsoidal section. Dispositif (2) selon l'une des revendications précédentes caractérisé en ce que les moyens d'injections comprennent un conduit (8) d'injection pénétrant dans l'élément (7) en coupole.Device (2) according to one of the preceding claims, characterized in that the injection means comprise a conduit (8) for injection into the dome element (7). Dispositif (2) selon la revendication précédente caractérisé en ce que le conduit (8) d'injection est muni à son extrémité (8b) dans l'élément (7) en coupole d'une buse (9) d'injection.Device (2) according to the preceding claim characterized in that the conduit (8) of injection is provided at its end (8b) in the element (7) dome of a nozzle (9) injection. Dispositif (2) selon la revendication précédente caractérisé en ce que la buse (9) d'injection présente une ouverture (9a) de section oblongue.Device (2) according to the preceding claim characterized in that the injection nozzle (9) has an opening (9a) of oblong section. Dispositif (2) selon la revendication 6 caractérisé en ce que la buse (9) d'injection présente une ouverture (9a) de section en T.Device (2) according to claim 6 characterized in that the injection nozzle (9) has an opening (9a) of T-section. Dispositif (2) selon l'une des revendications 6 à 8 caractérisé en ce que la buse (9) d'injection et le conduit (8) d'injection sont assemblés de manière démontable.Device (2) according to one of Claims 6 to 8, characterized in that the injection nozzle (9) and the injection conduit (8) are dismountably assembled. Dispositif (2) selon la revendication précédente caractérisé en ce que la buse (9) d'injection et le conduit (8) d'injection sont assemblés par l'intermédiaire d'un mécanisme de raccord à baïonnette.Device (2) according to the preceding claim characterized in that the injection nozzle (9) and the conduit (8) of injection are assembled via a bayonet connection mechanism. Dispositif (2) selon les revendications 5 à 10 caractérisé en ce que le conduit (8) d'injection est articulé.Device (2) according to claims 5 to 10 characterized in that the conduit (8) of injection is articulated. Dispositif (2) selon les revendications 5 à 11 caractérisé en ce que le conduit (8) d'injection est muni à son extrémité (8a) d'un écrou de serrage pour son raccord à une buse de refoulement du bassin.Device (2) according to claims 5 to 11 characterized in that the conduit (8) of injection is provided at its end (8a) of a clamping nut for its connection to a discharge nozzle of the basin. Système de nage à contre-courant caractérisé en ce qu'il comprend, immergé dans un bassin (1), le dispositif (2) de production d'un courant selon l'une quelconque des revendications précédentes.Counter-current swimming system characterized in that it comprises, immersed in a basin (1), the device (2) for producing a current according to any one of the preceding claims. Système de nage à contre-courant selon la revendication précédentes caractérisé en ce qu'il comprend, de plus, une pompe (1), un conduit (5) d'aspiration, un conduit (6) de refoulement.Counter-current swimming system according to the preceding claim, characterized in that it further comprises a pump (1), a suction duct (5) and a discharge duct (6). Système de nage à contre-courant selon la revendication précédente, caractérisé en ce que le dispositif (2) de production d'un courant est couplé à une buse de refoulement (9) associée au conduit (6) de refoulement.Counter-current swimming system according to the preceding claim, characterized in that the device (2) for producing a current is coupled to a discharge nozzle (9) associated with the discharge duct (6). Système de nage à contre-courant selon l'une des revendications 13 à 15, caractérisé en ce que le dispositif (2) de production de courant est immergé dans le bassin (1) de manière à générer un flux primaire (A) entre 10 et 20 cm sous la surface de l'eau du bassin.Counter-current swimming system according to one of Claims 13 to 15, characterized in that the current generating device (2) is immersed in the pond (1) so as to generate a primary flow (A) between 10 and 20 cm below the surface of the pond water.
EP15177717.4A 2014-08-01 2015-07-21 System for swimming against a current using a device for producing the current in a swimming pool Active EP2979735B1 (en)

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CN109267775A (en) * 2018-11-22 2019-01-25 王胜杭 A kind of artificial swimming pool automatic dust absorption system
CN109675286A (en) * 2019-01-05 2019-04-26 广东联盛泳池水疗设备有限公司 A kind of flow straightener without marginal swimming pool unit
GR1009526B (en) * 2018-02-15 2019-05-20 Χρηστος Γεωργιου Παπαγκικας Pulsative gymnastics installation

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US3534413A (en) * 1966-11-18 1970-10-20 Prosper Pierre Yven Rene Plass Swimming exerciser having water jets
FR2589954A1 (en) 1985-11-14 1987-05-15 Desjoyaux Catherine Counter-flow swimming system
FR2672331A1 (en) 1991-01-31 1992-08-07 Desjoyaux Jean Louis COUNTER-CURRENT SWIMMING AND FILTRATION DEVICE FOR POOL IN PARTICULAR.
GB2296861A (en) * 1995-01-11 1996-07-17 Spaform Ltd Swimming pool having circulating water flow
FR2867500A1 (en) 2004-03-12 2005-09-16 Sundeo Water jet flow increasing device for use in swimming pool, has suction chamber including inlet to permit additional water flow, and water injection pipes with passage sections whose outflow is lesser than in passage section of outlet pipe
EP1589165A1 (en) 2002-06-06 2005-10-26 Eaux & Brevets Holding S.A. Filtration installation for filtering the water of a water pool
US20080148470A1 (en) 2006-12-20 2008-06-26 Ferriss David A Swim spa with plenum arrangement at head end
DE202012003162U1 (en) 2012-03-28 2012-07-06 WTS Kereskedelmi és Szolgáltató Kft. Counter-current swimming
DE202012012765U1 (en) * 2012-10-05 2013-10-22 Uwe Jetstream Gmbh Countercurrent nozzle of a counterflow system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534413A (en) * 1966-11-18 1970-10-20 Prosper Pierre Yven Rene Plass Swimming exerciser having water jets
FR2589954A1 (en) 1985-11-14 1987-05-15 Desjoyaux Catherine Counter-flow swimming system
FR2672331A1 (en) 1991-01-31 1992-08-07 Desjoyaux Jean Louis COUNTER-CURRENT SWIMMING AND FILTRATION DEVICE FOR POOL IN PARTICULAR.
GB2296861A (en) * 1995-01-11 1996-07-17 Spaform Ltd Swimming pool having circulating water flow
EP1589165A1 (en) 2002-06-06 2005-10-26 Eaux & Brevets Holding S.A. Filtration installation for filtering the water of a water pool
FR2867500A1 (en) 2004-03-12 2005-09-16 Sundeo Water jet flow increasing device for use in swimming pool, has suction chamber including inlet to permit additional water flow, and water injection pipes with passage sections whose outflow is lesser than in passage section of outlet pipe
US20080148470A1 (en) 2006-12-20 2008-06-26 Ferriss David A Swim spa with plenum arrangement at head end
DE202012003162U1 (en) 2012-03-28 2012-07-06 WTS Kereskedelmi és Szolgáltató Kft. Counter-current swimming
DE202012012765U1 (en) * 2012-10-05 2013-10-22 Uwe Jetstream Gmbh Countercurrent nozzle of a counterflow system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1009526B (en) * 2018-02-15 2019-05-20 Χρηστος Γεωργιου Παπαγκικας Pulsative gymnastics installation
CN109267775A (en) * 2018-11-22 2019-01-25 王胜杭 A kind of artificial swimming pool automatic dust absorption system
CN109675286A (en) * 2019-01-05 2019-04-26 广东联盛泳池水疗设备有限公司 A kind of flow straightener without marginal swimming pool unit

Also Published As

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EP2979735B1 (en) 2018-04-11
FR3024483B1 (en) 2017-07-28
FR3024483A1 (en) 2016-02-05

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