WO2005066436A1 - Appareil pour produire un flux a contre-courant - Google Patents
Appareil pour produire un flux a contre-courant Download PDFInfo
- Publication number
- WO2005066436A1 WO2005066436A1 PCT/AU2005/000017 AU2005000017W WO2005066436A1 WO 2005066436 A1 WO2005066436 A1 WO 2005066436A1 AU 2005000017 W AU2005000017 W AU 2005000017W WO 2005066436 A1 WO2005066436 A1 WO 2005066436A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- counter
- water
- current
- flow
- swimmer
- Prior art date
Links
Classifications
-
- 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
Definitions
- nozzle systems Another problem encountered by nozzle systems is that they cannot be easily detached from the pool body and deployed in another pool.
- the divergence of the counter-current is substantially unrestrained both horizontally and vertically.
- the kinetic head loss would preferably not exceed approximately 0.15 m.
- the counter-current may diverge laterally away from the swimmer in a manner whereby the flow velocity of a section of the counter-current, taken across the counter-current away from the swimmer, has a curved profile in which the flow is fastest at the centre of the flow.
- this renders a slightly higher kinetic head at the centreline, as a consequence of which the corresponding reduction in piezometric head causes a lateral force on the swimmer towards the centreline.
- This 'self centring' effect may be enhanced by a simple elastic tether system that further biases the swimmer towards the centreline without inhibiting his or her stroking action.
- the apparatus can be secured to the reservoir by means of weights and the stability of the apparatus in use is enhanced by the presence of stabilising hydro-dynamic forces generated during the operation of the apparatus.
- This may eliminate the need to fix the apparatus to the reservoir by means of fasteners such as bolts, screws, toggles or other mechanical means.
- Figure 5 is a schematic side view of apparatus illustrated in Figure 1 ;
- Figure 6 is a schematic front view of the apparatus shown in Figure 5;
- Figures 9 and 10 are side and front views of further embodiment of the invention.
- Figures 11 and 12 are side and front views of yet another embodiment.
- the apparatus 1 has a flow path providing a discharge 4 with a breadth 5 not much larger than the body width 6 of a fast swimmer 7 and an outflow depth 9 not exceeding the swimmer's body depth 10.
- the width 5 of the discharge 4 is 1 m and the lateral distance from the side edge of the apparatus 1 to the nearest lateral side wall of pool 3 is at least 0.5 m.
- the initial width of the counter-current 2 is 1 m or slightly greater than the shoulder width of the swimmer 7.
- FIG. 1 there is shown a cross-section 17 of the velocity of flow 2 across the pool.
- the direction of the arrows in cross-section 17 indicate the divergence of the flow 2 while the length of the arrows shows that the flow velocity has a curved profile in which the flow is fastest at the centre.
- the curved velocity profile causes the kinetic energy of the flow 2 to be higher at the centreline A-A than at the flow boundaries 11. This renders a slight water level depression across the counter-current away from the swimmer (perpendicularly to line A-A) and as a consequence a lateral centralizing force 18 will be exerted on a swimmer when located sideways from the centreline.
- the apparatus 1 shown in Figures 1 and 2 is shown in more detail in Figures 5 and 6.
- the apparatus 1 comprises a flow path 22 having an intake 28 through which water is drawn from the pool 3, and a discharge 4 from which counter-current 2 is ejected into the pool 3.
- a water propulsion means in the form of a propeller 26 and a hydraulically or electrically powered motor 27, is located between the intake 28 and discharge 4.
- the propeller 26 generates a water flow along a flow path 22 extending from the intake 28 to the discharge 4 without a substantial increase in water pressure and at a relatively low energy demand.
- the flow path 22 includes a conduit 29.
- the conduit 29 is hydro-dynamically streamlined in accordance with the so-called Venturi principle, having a gradually converging inlet at the intake 28 and a gradually diverging outlet at the discharge 4.
- the water propulsion means is provided in the form of a rotor 30 with vanes 31.
- the flow path 22 in the alternate embodiment includes two branches 22', 22". By having two branches 20' and 20" better use is made of the Venturi effect.
- conduit 34 can be single or bisected.
- the conduit 29 includes a number of plate type flow partitions or vanes 46 that direct the water towards the discharge 4.
- the vanes 46 serve to eliminate (or at least dissipate) the rotary "cork screw" component of the flow generated by the rotating action of the thruster blades.
- the vanes 46 are accordingly used for straightening and smoothing the flow 2 and for minimization of energy demand.
- the apparatus 1 includes mounting means 50 comprising a weight 42 and pair of rods 41.
- the conduit 29 is slidably mounted to the rods 41 such that with the use of a buoyancy chamber 39 the system is able to maintain the upper level of the discharge 4 just below the (variable) water level in the pool.
- reaction force 43 that is directed into the adjacent side wall of pool 3.
- the reaction force 43 assists with the stabilization of the system.
- the upward reaction force is effectively cancelled by the opposite force being exerted on the propeller 26.
- FIG. 9 An alternate arrangement is shown in Figures 9 and 10. In this arrangement a rotor 35 with vanes 36 is driven by a rotary motor 37. Yet another embodiment of the invention is shown in Figures 11 and 12. In this arrangement the apparatus 1 has been physically attached to or incorporated into the outside of an pre-existing pool 3 or during its manufacturing, or after installation.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005203918A AU2005203918A1 (en) | 2004-01-09 | 2005-01-10 | Apparatus for generating a counter-current flow |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004900086 | 2004-01-09 | ||
AU2004900086A AU2004900086A0 (en) | 2004-01-09 | Counter-Current Exercise Pool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005066436A1 true WO2005066436A1 (fr) | 2005-07-21 |
Family
ID=34744193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2005/000017 WO2005066436A1 (fr) | 2004-01-09 | 2005-01-10 | Appareil pour produire un flux a contre-courant |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2005066436A1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2313835A1 (es) * | 2007-04-18 | 2009-03-01 | Enia Tecnica Y Gestion, S.L. | Dispositivo de natacion estatica y conjunto de partes para su construccion. |
GB2456763A (en) * | 2008-01-22 | 2009-07-29 | Nicholas Brian Littleton | Swimming pool for continuous swimming |
WO2014071536A1 (fr) * | 2012-11-12 | 2014-05-15 | Mueller Peter A | Système réglable pour nage à contre-courant |
US9855479B2 (en) | 2016-01-29 | 2018-01-02 | Watkins Manufacturing Corporation | Swimming system current generator |
CN107795157A (zh) * | 2016-08-31 | 2018-03-13 | 朱旭东 | 混合流及逆流式游泳池施工工艺 |
FR3106500A1 (fr) * | 2020-01-28 | 2021-07-30 | Laurent HEQUILY | Installation à vagues artificielles dynamiques pour la pratique du surf |
WO2023280375A1 (fr) * | 2021-07-05 | 2023-01-12 | Thilo Trefz | Cellule de pompe pour une installation de surf mobile comprenant une pompe radiale et un diffuseur |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2222594A1 (de) * | 1972-05-09 | 1973-11-29 | Karl Guenter Hoppe | Schwimmbecken mit umlaufstroemung |
US5005228A (en) * | 1985-09-10 | 1991-04-09 | Swimex Systems, Inc. | Flow controlling |
GB2296861A (en) * | 1995-01-11 | 1996-07-17 | Spaform Ltd | Swimming pool having circulating water flow |
-
2005
- 2005-01-10 WO PCT/AU2005/000017 patent/WO2005066436A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2222594A1 (de) * | 1972-05-09 | 1973-11-29 | Karl Guenter Hoppe | Schwimmbecken mit umlaufstroemung |
US5005228A (en) * | 1985-09-10 | 1991-04-09 | Swimex Systems, Inc. | Flow controlling |
GB2296861A (en) * | 1995-01-11 | 1996-07-17 | Spaform Ltd | Swimming pool having circulating water flow |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2313835A1 (es) * | 2007-04-18 | 2009-03-01 | Enia Tecnica Y Gestion, S.L. | Dispositivo de natacion estatica y conjunto de partes para su construccion. |
GB2456763A (en) * | 2008-01-22 | 2009-07-29 | Nicholas Brian Littleton | Swimming pool for continuous swimming |
GB2456763B (en) * | 2008-01-22 | 2009-12-02 | Nicholas Brian Littleton | Swimming pool for continuous swimming in a small area |
WO2014071536A1 (fr) * | 2012-11-12 | 2014-05-15 | Mueller Peter A | Système réglable pour nage à contre-courant |
US9855479B2 (en) | 2016-01-29 | 2018-01-02 | Watkins Manufacturing Corporation | Swimming system current generator |
CN107795157A (zh) * | 2016-08-31 | 2018-03-13 | 朱旭东 | 混合流及逆流式游泳池施工工艺 |
FR3106500A1 (fr) * | 2020-01-28 | 2021-07-30 | Laurent HEQUILY | Installation à vagues artificielles dynamiques pour la pratique du surf |
WO2021152263A1 (fr) * | 2020-01-28 | 2021-08-05 | Hequily Laurent | Installation à vagues artificielles dynamiques pour la pratique du surf |
WO2023280375A1 (fr) * | 2021-07-05 | 2023-01-12 | Thilo Trefz | Cellule de pompe pour une installation de surf mobile comprenant une pompe radiale et un diffuseur |
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