Compact Counter-Current Pool System with Brushless DC Motor
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Solution Overview
Problem
Conventional counter-current swimming systems for swimming pools require high power consumption, are bulky, and have complex designs that increase costs and maintenance needs, with existing technologies often requiring multiple nozzles and high energy input to achieve effective flow.
Innovation Solution
A compact counter-current system with a brushless DC motor integrated into a flow channel, featuring a large inlet and small outlet, and a specially designed closure element with recesses to maintain flow direction and reduce turbulence, utilizing a ceramic-bearing system to minimize friction and a strong permanent magnetic field for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional counter-current systems use multiple nozzles and high power input to achieve effective flow, then the flow strength is improved, but the power consumption increases
Solution Approach 1:
The patent combines multiple nozzles into a single integrated device with one motor driving a common propeller. The housing contains multiple outlet openings that direct water flow in opposite directions, creating effective counter-current flow without requiring multiple separate motor units. This merging reduces overall power consumption while maintaining flow strength.
Solution Approach 2:
The housing is divided into multiple flow channels with outlet openings at different positions and orientations. The front wall contains first outlet openings directed toward the pool bottom, while the rear wall contains second outlet openings directed toward the pool surface. This segmentation allows distributed flow generation throughout the pool volume, improving flow effectiveness without increasing motor power requirements.
2Productivity
If conventional systems use bulky designs to accommodate multiple nozzles and high power components, then the flow generation capability is improved, but the device size increases
Solution Approach 1:
Multiple nozzle functions are integrated into a single compact housing unit. The housing contains a motor, propeller, and multiple outlet openings in a unified structure, eliminating the need for separate nozzle assemblies. This integration significantly reduces the overall device volume while maintaining the ability to generate strong counter-current flow throughout the pool.
3Adaptability or versatility
If conventional systems use complex designs with multiple components, then the flow control flexibility is improved, but the device complexity increases
Solution Approach 1:
The patent integrates multiple flow control functions into a single motor-propeller-outlet system. The motor drives a propeller that pushes water through multiple outlet openings in the housing, with outlet orientations controlled by the housing geometry rather than separate adjustable mechanisms. This integration reduces device complexity while maintaining flow control flexibility through the distributed outlet configuration.
4Speed
If conventional systems use high power input to overcome flow resistance, then the flow velocity is improved, but the energy loss increases
Solution Approach 1:
The housing outlets are strategically positioned and oriented to direct flow at specific locations within the pool - front outlets toward the bottom and rear outlets toward the surface. This localized flow distribution optimizes the utility of each unit of water flow, improving overall system efficiency and reducing energy loss while maintaining effective flow velocities throughout the pool volume.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves a strong, adjustable flow with reduced power consumption, minimal maintenance, and improved flow efficiency, ensuring laminar flow and directional constancy while being easily integrated into swimming pools with reduced wear and energy usage.
Implementation Method 1
a strong permanent magnetic field for efficient operation
Implementation Method 2
brushless free drive DC motor
Implementation Method 3
utilizing a ceramic-bearing system to minimize friction
Implementation Method 4
a special flow channel, where the underwater drive is arranged... featuring a large inlet and small outlet
Implementation Method 5
ensuring laminar flow and directional constancy
Data Source
AI summary
The present invention provides a swimming pool having an integrated counter-current swimming system (1) comprising a device (10) for generating a strong, adjustable flow in the water, which has a compact design and a relatively low power consumption. The device (10), comprising a brushless underwater DC motor (8) which is arranged in the inlet area of a flow channel (3), is arranged in a housing (35) which has an end element (36) at the front, wherein the exit face of the flow channel (3) in the device (10) is almost flush in the plane of the shaped end element (36). The underwater DC motor (8) and thus the drive (2) is of slim design, wherein the geometric ratio of the length thereof to the diameter of the drive housing should be no less than 3.3.