Pool Water Outlet Air Venting to Reduce Blockage Suction

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Solution Overview

Problem

Conventional pools with single or dual water outlets pose safety risks due to powerful suction that can draw users' body parts or hair into the outlet, and large spacing between outlets wastes space and reduces production efficiency.

Innovation Solution

A water circulation system with an air inlet and outlet assembly that introduces ambient air to the water outlet when blocked, reducing negative pressure and preventing suction, and an auxiliary suction assembly that communicates with the outlet only when the filter is disconnected, ensuring continuous fluid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single water outlet is used, then device complexity is reduced, but user safety deteriorates due to powerful suction that can draw body parts into the outlet

Engineering Contradiction:
Improvenumber of water outletsVSAvoiduser safety
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The water outlet is divided into multiple outlets (first water outlet and second water outlet) spaced apart from each other. This segmentation reduces the suction force at each individual outlet, preventing body parts from being drawn in while maintaining effective water circulation.

Inventive Principle:
Principle #1Segmentation

2Reliability

If two water outlets are spaced far apart, then user safety is improved by preventing contact with both outlets, but space utilization deteriorates and production efficiency is reduced

Engineering Contradiction:
Improveuser safetyVSAvoidspace utilization and production efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The multiple water outlets are arranged in a vertical dimension rather than being spaced far apart horizontally. The outlets are positioned at different heights on the same wall, which prevents body part contact while maintaining compact space utilization and high production efficiency.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If filters are removed from water outlets, then ease of operation is improved, but harmful factors increase due to powerful suction drawing body parts into the outlet

Engineering Contradiction:
Improvefilter installation and removalVSAvoidsuction force drawing body parts into outlet
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The water outlet system is segmented into multiple outlets, which reduces the suction force at each outlet. This allows filters to be removed or installed easily without creating dangerous suction conditions that could draw body parts into the outlet.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The suction force parameter is changed by dividing the flow into multiple outlets, reducing the negative pressure at each outlet to a safe level while maintaining overall circulation efficiency.

Inventive Principle:
Principle #35Parameter changes

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

Reduces the risk of injury by minimizing suction force at the water outlet, allowing users to easily remove obstructions, and maintains efficient water circulation with or without a filter installed.

Implementation Method 1

reducing negative pressure and preventing suction

Methodology Applied
Scientific EffectNegative pressure: Pressure Drop

Data Source

PatentUS12448801B2Water circulation system for a pool and a pool
Publication Date: 2025.10.21 BESTWAY INFLATABLES & MATERIAL
  • US12448801B2 patent drawing
  • US12448801B2 patent drawing
  • US12448801B2 patent drawing

AI summary

A water circulation system for a pool comprises a water outlet assembly mounted to an inner wall of a pool, and in communication with an external pump through a water outlet pipe. The system also includes an air inlet assembly mounted to the pool a distance from the water outlet assembly, and an air outlet assembly attached to the water outlet assembly and in communication with the water outlet assembly. An air inlet passage connects the air inlet assembly to the air outlet assembly, so external air can enter the air inlet assembly and enter the water outlet assembly through the air outlet assembly. Air is introduced to the water outlet by the air outlet when the water outlet assembly is blocked, reducing negative pressure at the water outlet and reducing risk that a portion of a user's body is drawn against or into the water outlet.