NZ728132B2 - Swimming system current generator - Google Patents
Swimming system current generatorInfo
- Publication number
- NZ728132B2 NZ728132B2 NZ728132A NZ72813217A NZ728132B2 NZ 728132 B2 NZ728132 B2 NZ 728132B2 NZ 728132 A NZ728132 A NZ 728132A NZ 72813217 A NZ72813217 A NZ 72813217A NZ 728132 B2 NZ728132 B2 NZ 728132B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- entrainment
- venturi
- outlet
- passage
- main passage
- Prior art date
Links
- 230000009182 swimming Effects 0.000 title claims abstract 5
- 239000012530 fluid Substances 0.000 claims abstract 22
- 230000005484 gravity Effects 0.000 claims abstract 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 5
- 239000007788 liquid Substances 0.000 claims 18
- 230000007704 transition Effects 0.000 claims 2
- 238000003491 array Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
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
- E04H4/12—Devices or arrangements for circulating water, i.e. devices for removal of polluted water, cleaning baths or for water treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
- F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
- F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
- F04F5/12—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids of multi-stage type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel
Abstract
current generator for a swimming system may include multiple entrainment pumps that discharge a flow of water into a pool. The entrainment pumps may each have a nozzle, a venturi and an entrainment inlet. In use, the flow of water from the nozzle into the venturi causes water at the entrainment inlet to flow into the venturi along with water from the nozzle. Each entrainment pump is arranged such that the fluid that flows out of the venturi passage is directed within a main passage, and the flow from multiple venturis may be combined and may be directed at least partially against the force of gravity before that fluid is directed out of the main passage outlet and into the pool. In at least some implementations, the fluid flows for at least one foot between the venturi and the main passage outlet.
Claims (23)
1. A current generator for a swimming system having a main volume for a swimmer and a main passage in which water flows from the current generator to an outlet of the main passage that leads to the main volume, comprising: multiple entrainment pumps, each having: a nozzle having a nozzle inlet adapted to receive a supply of pressurized fluid and a nozzle outlet, a venturi having a passage aligned with the nozzle and through which liquid discharged from the nozzle outlet flows, the venturi having a venturi outlet from which fluid flows out of the venturi passage, and an entrainment inlet open to an area outboard of a manifold and communicating with the venturi passage, wherein a flow of liquid from the nozzle outlet into the venturi creates a pressure drop at the entrainment inlet and fluid in an area of the entrainment inlet is drawn through the entrainment inlet and entrained with the liquid in the venturi to flow through the venturi and out of the venturi outlet, each entrainment pump being arranged such that the fluid that flows out of the venturi passage is directed within the main passage at least partially against the force of gravity before that fluid is directed out of the main passage outlet and into the main volume.
2. The current generator of claim 1 wherein the nozzle is lower than the venturi outlet with respect to the direction of the force of gravity.
3. The current generator of claim 1 wherein the venturi outlet is located to provide at least one foot of travel of the fluid against the force of gravity within the main passage.
4. The current generator of claim 2 wherein each venturi includes a passage that is oriented parallel to the direction of the force of gravity or within 45 degrees of parallel to the direction of the force of gravity.
5. The current generator of claim 4 which includes a housing that defines at least part of the main passage and wherein the housing includes a flow director that is provided in the main passage to transition the flow from a first direction from the entrainment pumps to a second direction generally parallel to the main passage outlet.
6. The current generator of claim 1 wherein the entrainment inlet of at least one entrainment pump is located at a different height than the entrainment inlet of another entrainment pump.
7. The current generator of claim 1 wherein the entrainment pumps are provided in at least two arrays and wherein the entrainment inlets of a first array are located at a different height than the entrainment inlets of a second array.
8. The current generator of claim 7 wherein the first array is located at an inboard side adapted to be located nearer a supply of liquid in a pool with which the current generator is used and the second array is located further from the supply of liquid than the first array, and wherein the entrainment inlets of the first array are located higher than the entrainment inlets of the second array.
9. A swimming system, comprising: a pool including a main volume adapted to contain a liquid, and a main passage having an outlet leading to the main volume; a primary pump having an outlet from which liquid is discharged under pressure; a manifold having at least one inlet communicated with the primary pump outlet and multiple outlets from which the pressurized liquid is discharged; multiple entrainment pumps associated with the manifold with one entrainment pump provided for each outlet, each entrainment pump having: a nozzle having a nozzle inlet communicating with and receiving pressurized liquid from a respective one of the manifold outlets and a nozzle outlet, a venturi having a passage aligned with the nozzle and through which liquid discharged from the nozzle outlet flows, the venturi having a venturi outlet from which fluid flows out of the venturi passage, and an entrainment inlet open to an area outboard of the manifold and communicating with the venturi passage, wherein the flow of liquid from the nozzle outlet into the venturi creates a pressure drop at the entrainment inlet and fluid in an area of the entrainment inlet is drawn through the entrainment inlet and entrained with the liquid in the venturi to flow through the venturi and out of the venturi outlet, each entrainment pump being arranged so that fluid that flows out of the venturi passage is directed within the main passage at least partially against the force of gravity and the direction of the fluid is changed within the main passage before the fluid exits the main passage through the main passage outlet.
10. The system of claim 9 wherein the entrainment pumps are arranged so that the nozzle is lower than the venturi outlet with respect to the direction of the force of gravity.
11. The system of claim 9 wherein the main passage includes an inlet through which liquid from a supply of liquid in the pool may enter the main passage, and wherein the entrainment pumps are at least partially received within the main passage.
12. The system of claim 9 wherein each venturi includes a passage along an axis and the axis is oriented parallel to the direction of the force of gravity or within 30 degrees of parallel to the direction of the force of gravity.
13. The system of claim 10 wherein the venturi outlets are arranged at least one foot from the main passage outlet.
14. The system of claim 10 wherein the main passage outlet is oriented perpendicular to the direction of the force of gravity or within 30 degrees of perpendicular to the direction of the force of gravity.
15. The system of claim 14 which also includes at least one flow director within the passage and arranged to transition the flow from a first direction from the entrainment pumps to a second direction generally parallel to the main passage outlet.
16. The system of claim 9 wherein the entrainment inlet of at least one entrainment pump is located at a different height than the entrainment inlet of another entrainment pump.
17. The system of claim 16 wherein a first entrainment pump is located at an inboard side of the main passage nearer the main volume and at least one entrainment pump is located further from the main volume than the first entrainment pump, and wherein the entrainment inlet of the first entrainment pump is located higher than the entrainment inlet of the second entrainment pump.
18. The system of claim 9 which also includes a valve located between the primary pump and the entrainment pumps to reduce the flow rate of liquid delivered to the entrainment pumps.
19. A current generator for a swimming system, comprising: a housing defining a main passage including an open space that is communicated with a main passage outlet; multiple entrainment pumps each entrainment pump having a nozzle with a nozzle outlet, a venturi having a passage through which liquid discharged from the nozzle outlet flows, the venturi having a venturi outlet from which fluid flows out of the venturi passage, and an entrainment inlet communicating with the venturi passage, wherein the flow of liquid from the nozzle outlet into and through the venturi passage creates a pressure drop at the entrainment inlet that draws in fluid that is in an area of the entrainment inlet and entrains that with the liquid flowing through the venturi passage, the entrainment pumps being arranged so that fluid that flows out of multiple venturi passages flows into the open space of the main passage so that the fluid flows out of said multiple venturis may at least partially merge before flowing through the main passage outlet.
20. The current generator of claim 19 wherein the open space is upstream of a flow director received in the main passage and arranged to change the direction of fluid flow within the main passage before the fluid exits the main passage outlet.
21. The current generator of claim 20 wherein at least a portion of the main passage is arranged for fluid flow therein in a direction opposite to the direction of the force of gravity or within 45 degrees of being opposite to the direction of the force of gravity.
22. The current generator of claim 19 wherein the venturi outlets of said multiple entrainment pumps are arranged to discharge fluid into the main passage at least one foot from the main passage outlet.
23. The current generator of claim 1 or 19, substantially as herein described with reference to any one of the
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/010,017 US9855479B2 (en) | 2016-01-29 | 2016-01-29 | Swimming system current generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ728132A NZ728132A (en) | 2023-12-22 |
| NZ728132B2 true NZ728132B2 (en) | 2024-03-26 |
Family
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