Fluid Delivery Device Using Suction for Pool Chemical Injection
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Solution Overview
Problem
Existing fluid delivery systems for pressurized pipes in swimming pools require auxiliary pumps, which are costly and prone to mechanical failure, or necessitate labor-intensive installations with multiple components, making them inefficient and difficult to retrofit.
Innovation Solution
A fluid delivery device with an adjustable flow restriction member and delivery conduit that uses suction to draw fluid into the pipe, eliminating the need for auxiliary pumps and minimizing additional components, allowing for efficient mixing by introducing fluid at turbulent points within the pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If auxiliary pumps are used to deliver fluid into pressurized pipe, then fluid delivery performance is adequate, but system cost and mechanical complexity increase
Solution Approach 1:
The invention extracts the fluid delivery function from the pressurized main line by creating a separate delivery conduit that taps into the pipe wall. The delivery conduit uses suction created by flow restriction means to draw fluid into the pressurized line, eliminating the need for auxiliary pumps while maintaining adequate delivery performance.
Solution Approach 2:
The system uses the kinetic energy and flow of the pressurized fluid itself to create suction that draws additional fluid into the line. The flow restriction means within the pipe creates a pressure differential that automatically pulls fluid through the delivery conduit without requiring external mechanical assistance.
2Device complexity
If venturi unit is used to deliver fluid into pressurized pipe, then auxiliary pumps are eliminated, but installation complexity and space requirements increase
Solution Approach 1:
The invention segments the fluid delivery function into separate components: flow restriction means within the pipe and a delivery conduit external to the pipe. This segmentation allows the delivery conduit to be installed independently through the pipe wall without requiring major modifications to the return pipe, simplifying installation compared to integrated venturi units.
Solution Approach 2:
The delivery conduit is positioned in a different spatial dimension relative to the main pipe, extending through the pipe wall rather than being integrated within the pipe itself. This dimensional change allows for simpler installation without requiring extensive modifications to the existing return line.
3Manufacturing precision
If flow restriction means is made adjustable, then flow control precision improves, but device complexity increases
Solution Approach 1:
The flow restriction means is designed to be adjustable rather than fixed, allowing the restriction level to be dynamically changed to control the amount of suction and fluid delivery. This dynamic adjustment capability provides precise flow control while maintaining relatively simple device structure through mechanisms like threaded adjustments or movable restriction elements.
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 enables efficient and cost-effective delivery of chemicals into swimming pool water without auxiliary pumps, simplifies installation, and ensures better mixing by introducing fluids at turbulent points, reducing mechanical complexity and installation challenges.
Implementation Method 1
uses suction to draw fluid into the pipe
Implementation Method 2
creates a pressure differential to generate suction
Implementation Method 3
introducing fluid at turbulent points within the pipe, reducing mechanical complexity
Data Source
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AI summary
A fluid delivery device (402) for fixing to and delivering a fluid into a pressurised pipe (308), the device comprising flow restriction means (404) operable to restrict a flow of fluid through the said pipe (308), thereby generating a restricted flow region (416) within the pipe (308) at or around the position of the flow restriction means (404), as compared to an unrestricted flow upstream of the device, the device further comprising a delivery conduit (408) arranged to open into or proximal to the said restricted flow region (416).