Pool Aerator Venturi Tube Low Pressure Mixing
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Solution Overview
Problem
Existing pool water aerators are inefficient at low water jet pressures and require complex installation processes, limiting their use in existing swimming pools without the need for draining or stopping the filtration system.
Innovation Solution
A pool aerator comprising a plastic hemispherical or frustoconical spray body acting as a Venturi tube and an atmospheric air intake pipe, which can be easily installed by screwing into existing nozzles, utilizing the Venturi effect to mix air with recirculated water and produce high-efficiency small air bubbles for oxygenation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional aerators are used, then water aeration can be achieved, but they are inefficient at low water jet pressures
Solution Approach 1:
The patent modifies the geometric parameters of the aerator components, specifically the Venturi tube diameter ratio (d/D) and the diffuser angle, to optimize performance at low pressures. By changing these dimensional parameters, the aerator achieves effective air-water mixing even when operating pressure is reduced, directly addressing the contradiction between maintaining aeration efficiency and operating at lower pressures.
Solution Approach 2:
The patent creates localized zones with different flow characteristics within the aerator structure. The Venturi section creates a localized high-velocity region that efficiently draws in air, while the diffuser section provides a gradual expansion zone for bubble formation. This local optimization of flow conditions allows effective aeration at lower overall system pressures.
2Reliability
If complex installation processes are used, then aerator functionality can be achieved, but installation becomes difficult and time-consuming
Solution Approach 1:
The aerator is divided into separate modular components: the Venturi tube section, the diffuser section, and the air intake components. This segmentation allows each part to be manufactured independently with precise tolerances, then assembled together during installation. The modular design simplifies the installation process while maintaining the complex internal flow characteristics needed for effective functionality.
Solution Approach 2:
The aerator design incorporates universal mounting features and standardized connection interfaces that allow it to be installed in various pool configurations (above-ground or in-ground, different nozzle types). This multi-functionality in terms of installation locations and methods reduces the complexity of the installation process while ensuring proper functionality across different applications.
3Adaptability or versatility
If existing nozzles are modified, then aeration can be added to existing pools, but the filtration system must be stopped or drained
Solution Approach 1:
The aerator components are designed to nest within the existing nozzle structure. The Venturi tube fits inside the nozzle body, and the diffuser section extends outward without requiring removal of the nozzle from the filtration system. This nested configuration allows the aerator to be installed on existing nozzles while the filtration system continues to operate, eliminating the need to drain or stop the system.
Solution Approach 2:
The aerator is pre-assembled as a complete functional unit before installation. All internal passages, air intakes, and flow channels are pre-configured and tested. This preliminary assembly allows for quick installation by simply attaching the pre-built aerator to the existing nozzle, without requiring on-site fabrication or system shutdown to assemble components.
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 aerator achieves effective water aeration at low pressures with easy installation, suitable for both above and underground pools, maintaining water clarity and quality without disrupting the filtration system, and providing a cost-effective and aesthetically pleasing solution.
Implementation Method 1
The air is attracted inside the aerator by the negative pressure generated by the moving water of the existing pool filtration circuit (the Venturi effect)
Data Source
Figure 1~1A
Figure 1B
Figure 2~2A
AI summary
The invention provides an improved pool aerator for pools with water recirculation circuit, comprising a hemispherical body (200a) and an atmospheric air intake pipe (201). The body of the aerator comprises a rounded plastic object, having in the middle area a cylindrical portion (221), and at one end with a connecting means (202) to the pool nozzle, the middle portion of the aerator body continuing with a hemispherical dome (223), inside being a Venturi tube made in the form of two intersected frustoconical spaces - one for inlet (209) and the other (211) for mixing and discharging water mixed with air - whose two axes form an angle (α) between 10 and 20 degrees. The mixing hole communicates with a vertical cylindrical hole (203), in which the intake pipe is inserted by sliding, until the inner wall of the frustoconical hole is reached.