Annular Impeller Pool Cleaner for Debris Separation
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Solution Overview
Problem
Existing handheld pool vacuum cleaners are inadequate in collecting larger debris before it reaches the strainer/filter, potentially damaging the filaments and do not provide sufficient suction force or water processing capacity.
Innovation Solution
A handheld pool cleaner featuring an annular impeller with spiral veins on its inner surface, an eddy trap at the input, and a strainer/filter bag assembly at the output, which allows larger debris to be collected before reaching the filter, reducing wear and tear on the filter and increasing suction force and water processing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional impeller design is used, then the structure is simple, but larger debris cannot be collected before reaching the filter, causing filter damage
Solution Approach 1:
The impeller is designed with multiple curved blades segmented around the hub, creating distinct flow channels between blades. This segmentation allows different sized debris to be separated and directed to different destinations - larger debris between blades, smaller debris through the center passage - protecting the filter while maintaining structural complexity at an acceptable level
Solution Approach 2:
The annular passage through the center of the impeller acts as an intermediary channel. It allows smaller debris-laden water to pass through the center of the impeller while larger debris is directed between the blades, preventing filter damage without requiring a complex pre-filter system
2Productivity
If the impeller draws water about the outside, then the structure is simpler, but suction force and water processing volume are reduced
Solution Approach 1:
The impeller design transitions from a traditional external flow pattern to an internal annular flow pattern. Water is drawn through the center passage and expelled radially outward through the curved blades, utilizing both axial and radial flow dimensions. This three-dimensional flow pattern increases water processing volume while the curved blade geometry optimizes suction force
Solution Approach 2:
The curved blades of the impeller are designed with specific radii of curvature to optimize water flow patterns. The curved geometry creates efficient centrifugal force distribution, enhancing suction force at the inlet while maintaining high water processing volume through smooth flow transitions, justifying the increased design complexity
3Reliability
If pre-filtering is implemented, then larger debris is removed, but the filter filaments are damaged by debris that bypasses the pre-filter
Solution Approach 1:
The impeller blades perform preliminary separation action on debris before water reaches the filter. Larger debris is directed between the blades and expelled outward, while only smaller debris-laden water passes through the center passage to the filter, preventing filter damage without requiring a complex pre-filter system
Solution Approach 2:
The design extracts the debris separation function from the filter system and integrates it into the impeller structure. The impeller blades actively separate and remove larger debris from the water stream before it reaches the filter, allowing the filter to handle only smaller particles it is designed for, thereby protecting filter durability while simplifying the overall filtration system
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 effectively protects the filter from damage, enhances suction force, and increases the volume of water that can be processed, allowing for efficient collection of debris without pre-filtering, thus improving the performance of handheld pool vacuum cleaners.
Implementation Method 1
The centrifugal and displacement forces generated in the high-speed rotation of the impeller creates suction to draw sewage water into the input
Implementation Method 2
The centrifugal and displacement forces generated in the high-speed rotation of the impeller creates suction
Implementation Method 3
The fluid flow disruptions create an eddy trap in the fore receptacle, causing heavier, larger or denser debris to fall into or collect within the fore receptacle
Implementation Method 4
causing heavier, larger or denser debris to fall into or collect within the fore receptacle
Implementation Method 5
a strainer/filter bag assembly
Data Source
AI summary
The present portable pool cleaner is provided with an improved annular impeller, which facilitates the possible use of a fore receptacle without a filter bag, operating as an eddy trap for large debris, and also facilitates having an aft receptacle incorporating a filter bag or direct connection to in pool filtration systems. The annual impeller is able to effectively limit object size passing to the next stage, within impeding or striking objections passing through the inside gap in the annular impeller. The impeller duct/annular shape, with internal spiral blades, forms a through hole for the light sewage to more easily pass, while heavier particles in the sewage are trapped. The optional fore and aft receptacles may be detachable to facilitate cleaning, replacement and access to the impeller for cleaning or replacement. The handheld design facilitates underwater use.