Pool Return Fitting with Discontinuous Surface and Tapered Fin
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Solution Overview
Problem
Conventional pool return fittings pose a safety hazard when they unexpectedly switch from blowing water to sucking it in, as the sleek outer cover can trap swimmers underwater, and safety structures meant to prevent small hands from entering can entangle hair or clothing, leading to potential drowning.
Innovation Solution
A pool return fitting assembly with a discontinuous outer surface featuring protrusions and a tapered fin that limits the outlet size to prevent entanglement, breaking the seal with the swimmer's body and preventing hair or clothing from becoming trapped, while allowing fluid communication in various directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a smooth continuous outer covering is used on the pool return fitting, then the aesthetic appearance is improved, but the safety is worsened as it can form a seal with a swimmer's body and trap them underwater
Solution Approach 1:
The outer covering surface is segmented into multiple discrete protrusions rather than being smooth and continuous. This segmentation breaks the ability of the surface to form a continuous seal with a swimmer's body, preventing entrapment while maintaining aesthetic appeal through the structured arrangement of protrusions.
Solution Approach 2:
The surface is given non-uniform local quality through the protrusions, which create varying topography across the covering. This local variation in surface geometry prevents uniform sealing contact with swimmers while preserving overall aesthetic coherence of the fitting assembly.
2Object-affected harmful factors
If dividers or safety structures are added to prevent small hands from entering, then child safety is improved, but the risk of hair or clothing entanglement increases when suction occurs
Solution Approach 1:
Instead of adding protruding safety structures that could catch hair and clothing, the design uses recessed or tapered features that guide hair and clothing away from the opening. The safety mechanism is inverted from positive engagement (protrusions blocking entry) to negative engagement (tapered surfaces directing flow away).
Solution Approach 2:
The design converts the potential harm of suction into a beneficial effect by using the suction force itself to guide hair and clothing away from the opening through properly oriented tapered surfaces, rather than allowing them to be caught on protruding safety structures.
3Shape
If the pool return fitting has a sleek design to blend into the pool side, then aesthetic integration is improved, but safety structures must be added to prevent body part insertion
Solution Approach 1:
The safety features are merged with the aesthetic covering rather than being separate add-on structures. The protrusions that provide safety functionality are integrated into the outer covering design itself, allowing the fitting to maintain a sleek, blended appearance while incorporating safety elements.
Solution Approach 2:
The outer covering serves multiple functions simultaneously: aesthetic integration with the pool side, structural protection of the fitting, and active safety prevention of entrapment. This multi-functionality eliminates the need for separate safety structures and maintains design simplicity.
Data Source
AI summary
A pool return fitting assembly with a pool return body, a pool return cover with an opening aligned with the pool return body's opening. The outer surface of the pool return cover may include an uneven surface bordering the opening with barriers projecting out from the pool return cover away from the pool return body, the barriers separated by channels in fluid communication with the opening through the pool return cover. A fin is positioned within the opening of the pool return cover and tapers towards the interior surface of the pool return body as the fin extends farther away from the pool return cover.