Magnetically Coupled Fluid Pump Assembly Without Submerged Motor
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Solution Overview
Problem
Conventional fluid pump assemblies for applications like aquariums and foot spa basins face challenges in maintaining efficient operation, durability, and noise reduction, particularly due to the need for mechanical mounts and potential electrical component submersion, which complicates design and functionality.
Innovation Solution
A magnetically coupled fluid pump assembly design featuring a drive unit outside the container and a driven unit inside, utilizing magnetic attraction to rotate a magnetically coupled impeller or propeller, eliminating the need for mechanical mounts and electrical submersion, with a housing and nozzle configuration that enhances stability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If mechanical mounts and brackets are used to secure the pump assembly, then the structural stability is improved, but the overall weight increases and installation flexibility decreases
Solution Approach 1:
The patent replaces mechanical mounting systems (brackets, screws, physical supports) with a magnetic field-based securing mechanism. The magnetic drive unit generates magnetic flux that couples with the driven unit across the container wall, eliminating the need for mechanical mounts while maintaining structural stability. This substitution reduces overall weight and increases installation flexibility.
2Adaptability or versatility
If electrical components are submerged in water, then the pump can be fully contained within the fluid container, but hermetic seals are required increasing device complexity
Solution Approach 1:
The patent divides the pump system into two separate units: a magnetic drive unit that remains outside the water container and a magnetically coupled driven unit inside the container. This segmentation allows the electrical components (motor, windings) to stay dry and outside the water environment, eliminating the need for hermetic seals while maintaining full placement flexibility within the container.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the drive unit and driven unit. The magnetic flux couples the two units across the container wall, enabling power transmission without direct physical or electrical contact with water, thus eliminating hermetic seal requirements.
3Adaptability or versatility
If the drive unit and driven unit are separated into different locations, then installation flexibility is improved, but magnetic coupling efficiency may decrease
Solution Approach 1:
The patent employs a dynamic magnetic field generation system where the drive unit's motor creates a rotating magnetic flux that actively couples with the driven unit. This dynamic magnetic coupling maintains efficient power transmission even when units are separated by the container wall, allowing flexible installation positions while preserving coupling efficiency.
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 solution provides a lightweight, efficient, and quiet fluid pump assembly that maintains operational stability and reduces noise, with improved durability and flexibility in placement, avoiding the need for hermetic seals and mechanical supports.
Implementation Method 1
A rotator is at least partially contained in the housing. The rotator includes a magnet constructed and arranged to be magnetically coupled to and rotationally driven by a magnet of a drive unit.
Data Source
AI summary
A fluid pump assembly is provided. The pump has a pair of units magnetically coupled to each other. The first unit contains a drive motor and a magnetic assembly. The second unit contains a magnetic assembly and a blade of a propeller/impeller for imparting movement to a fluid. As the first unit is activated by the drive motor, a magnetic flux is created which in turn rotates the magnetic assembly in the second unit, driving the blade.