Venturi Eductor Dissolving Solid Chemicals in Low Flow
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Solution Overview
Problem
Existing water treatment apparatuses face challenges in effectively dissolving slow-dissolving chemicals in low flow rates, leading to inconsistent chemical concentrations in pool or spa water, requiring frequent manual adjustments by pool owners or maintenance personnel.
Innovation Solution
An apparatus with a housing, nozzle, and removable cartridge system that utilizes a venturi effect to efficiently dissolve solid chemicals in low flow rates, ensuring accurate chemical dosing through adjustable cartridge lengths and support structures for optimal chemical contact with water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dissolvable tablets or slow release formulations are used in off-line apparatus with low flow rates, then the apparatus can be installed away from the main water flow, but the chemicals do not dissolve effectively leading to inconsistent chemical concentrations
Solution Approach 1:
The apparatus divides the water flow path into segments: main flow continues uninterrupted while a bypass channel creates a separate dissolution zone. This segmentation allows chemicals to dissolve in the low-velocity bypass stream without disrupting the main pool circulation, resolving the conflict between installation flexibility and dissolution effectiveness.
Solution Approach 2:
The bypass channel acts as an intermediary zone between the main water flow and the chemical dissolution process. It provides a dedicated space with appropriate flow characteristics for slow-dissolving chemicals to dissolve effectively, while the main flow remains undisturbed. This intermediary structure enables both installation flexibility and reliable chemical dissolution.
2Measurement precision
If manual chemical addition is performed, then the owner can control chemical dosing, but it requires frequent presence at poolside and is time consuming
Solution Approach 1:
The apparatus enables self-service operation by automatically dissolving and dosing chemicals through the bypass flow mechanism. Once installed with the appropriate chemical tablets, the system continuously doses the pool without requiring owner intervention, eliminating the time loss associated with manual chemical addition while maintaining dosing control through proper initial setup.
Solution Approach 2:
The bypass channel provides continuous water flow through the chemical dissolution zone, ensuring consistent and continuous chemical dosing without interruption. This continuous action replaces the intermittent manual dosing process, eliminating the need for frequent owner presence while maintaining precise chemical concentration control in the pool.
3Reliability
If in-line apparatus with high flow rates are used, then sufficient flow is available to dissolve chemicals, but the apparatus interferes with the main water flow and requires specific installation location
Solution Approach 1:
The apparatus segments the water flow into a main flow path and a separate bypass dissolution path. The bypass channel receives a portion of the main flow and uses it to dissolve chemicals, then returns the treated water to the main flow. This segmentation allows the dissolution process to occur in a controlled environment with appropriate flow rates, independent of the main flow characteristics, providing installation flexibility anywhere in the pool circulation system.
Solution Approach 2:
The bypass channel structure serves multiple functions: it provides a dissolution zone for chemicals, creates appropriate flow conditions for slow-dissolving tablets, and integrates with the existing pool circulation system. This multi-functionality allows the apparatus to be installed in various locations within the pool system without requiring modifications to the main flow path, enhancing adaptability while ensuring reliable chemical dissolution.
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 apparatus effectively dissolves slow-dissolving chemicals in low flow rates, maintaining consistent chemical concentrations in pool or spa water, reducing the need for frequent manual adjustments and ensuring efficient chemical distribution.
Implementation Method 1
The nozzle is an eductor. The eductor is positioned in the housing such that there is a flow of the water within the housing is directed towards the top of the housing from the eductor. The eductor has at least one fluid intake port that creates a venturi effect and allows water in the lower portion of the housing to be drawn into the eductor and sprayed towards the top of the housing.
Data Source
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AI summary
A low flow apparatus for creating a solution in water of a solid chemical is provided. Also provided is a cartridge containing a solid chemical which may be placed into the apparatus. Further provided is a method of using the apparatus to create a chemical solution form a solid chemical.