Angled Pumping Impeller for Submerged Surface Cleaning
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Solution Overview
Problem
Existing swimming pool cleaning devices with vertically aligned pumping propellers suffer from high hydraulic resistance, energy consumption, and increased costs due to their vertical spatial requirement and weight, which negatively impact performance and usability.
Innovation Solution
A swimming pool cleaning device with an inclined axial pumping propeller and offset liquid inlet and outlet, reducing vertical spatial requirements and hydraulic drag while maintaining suction and filtering performance, allowing for a more compact and efficient design with reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a vertical pumping propeller arrangement is used, then suction force is generated, but vertical spatial requirement increases and hydraulic resistance increases
Solution Approach 1:
The patent changes the orientation of the pumping propeller from vertical to inclined at an angle between 15° and 60° relative to the longitudinal axis. This dimensional reorientation reduces the vertical spatial footprint while maintaining the suction force generation capability through the inclined blade geometry that still creates pressure differential along the cleaning surface.
2Force
If a vertical pumping propeller arrangement is used, then suction force is generated, but hydraulic resistance increases leading to high energy consumption
Solution Approach 1:
By reorienting the propeller axis from vertical to inclined, the hydraulic flow path becomes more aligned with the device's longitudinal axis, reducing turbulence and resistance. This dimensional change optimizes the water flow dynamics, decreasing energy losses while preserving the necessary suction force for effective cleaning.
3Force
If a vertical pumping propeller arrangement is used, then suction force is generated, but device weight increases
Solution Approach 1:
The inclined configuration allows for a more compact structural arrangement compared to the vertical setup. By distributing the propeller's rotational force along an inclined axis rather than vertically, the supporting structure can be optimized to reduce material usage and overall device weight while maintaining equivalent suction performance.
4Force
If a vertical pumping propeller arrangement is used, then suction force is generated, but production cost and usage cost increase
Solution Approach 1:
The inclined propeller design enables a more space-efficient housing and component layout, reducing the overall device volume. This compact configuration lowers manufacturing costs through reduced material requirements and simplified assembly, while also decreasing transportation and storage costs during the product lifecycle.
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 device achieves equivalent or improved cleaning performance with lower energy consumption and costs, featuring a smaller, lighter design that simplifies handling, transport, and storage, and enhances debris suction capabilities, particularly for pool walls.
Implementation Method 1
at least one axial pumping propeller which is interposed in a hydraulic circuit in order to generate therein a flow of liquid between each inlet and each outlet
Implementation Method 2
a filtration chamber which is provided in the hollow body and which has: at least one liquid inlet into the hollow body, located at the base of the body, at least one liquid outlet out of the hollow body, located remotely from the base of the hollow body, at least one hydraulic circuit which is capable of providing a flow of liquid between at least one inlet and at least one outlet through at least one filtering device
Data Source
AI summary
Detailed is a device for cleaning an immersed surface including a body and members for driving the body over the immersed surface, a filtration chamber which is provided in the body and which has: a liquid inlet located at the base of the body; a liquid outlet arranged opposite the base of the body; a hydraulic circuit for flow of liquid between this liquid inlet and this liquid outlet through a filtering device; a liquid pumping device including a pumping motor which has a rotating drive shaft which is coupled to a pumping propeller which is interposed in the hydraulic circuit, wherein the liquid outlet is longitudinally offset from the liquid inlet and the pumping propeller has an inclined rotation axis which forms, with the longitudinal direction, an angle which is not equal to zero and which is different from 90°.