Venturi Microbubble Generator With Conical Spacers for Low Back Pressure
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Solution Overview
Problem
Existing devices for generating micro and nano bubbles in liquids require external energy sources and suffer from pressure drops and back pressure issues, especially when there are partial closures in the water system, limiting their efficiency and practicality in various applications.
Innovation Solution
A device that uses a Venturi chamber with a conical shape and modular conical spacers to generate micro and nano bubbles without external energy, reducing pressure drops and back pressure by accelerating the liquid flow and utilizing a wedge-shaped profile to manage flow and prevent water hammer, allowing for adjustable bubble size and efficient operation even with partial system closures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If external energy sources (thermal and electrical) are used to generate air bubbles, then bubble generation efficiency is improved, but device complexity and energy consumption increase
Solution Approach 1:
The device uses the kinetic energy of the liquid flow itself to generate bubbles through the Venturi effect, without requiring external thermal or electrical energy sources. The liquid's own motion creates the pressure differential needed for bubble generation, making the system self-sufficient and energy-efficient
Solution Approach 2:
The invention employs hydraulic principles through the Venturi chamber design, where liquid flow creates a pressure differential that draws gas into the liquid stream. This hydraulic approach replaces complex external energy systems with a simple fluid dynamics-based solution
2Manufacturing precision
If pressure drops are increased to generate micro and nano bubbles, then bubble size control is improved, but system back pressure and operational problems increase
Solution Approach 1:
The device controls bubble size by adjusting operational parameters such as liquid flow rate and gas injection amount, rather than relying on extreme pressure drops. The Venturi chamber geometry allows fine-tuning of bubble characteristics through parameter optimization, avoiding the need for high back pressure that would cause operational problems
3Ease of operation
If the pipe is partially closed at outlet or inlet, then flow rate control is improved, but back pressure and operational reliability deteriorate
Solution Approach 1:
The system is designed to dynamically adapt to partial closures at inlet or outlet by adjusting the liquid flow through the Venturi chamber. The modular conical spacers allow the system to maintain stable operation across a range of flow conditions, preventing water hammer and maintaining reliability even when flow rate control requires partial pipe closure
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 effectively generates micro and nano bubbles with reduced pressure drops and back pressure issues, enabling efficient aeration and oxygenation without external energy, adaptable to various flow rates and system conditions, and is simple, economical, and easy to install and maintain.
Implementation Method 1
A Venturi chamber (44) is provided, having a liquid inlet (20) and a liquid outlet (30), configured to suck the gas from the pre-chamber (41) and generate micro and nano bubbles of gas in the liquid that passes through it
Implementation Method 2
a plurality of conical spacers (50), aligned longitudinally along a liquid flow direction, engaged in one another, each comprising a plurality of passages (51) configured to accelerate a liquid flow passing through the conical spacers (50)
Implementation Method 3
a wedge-shaped profile (60), positioned at an outlet of the liquid from the Venturi chamber (44), configured to eliminate a water hammer generated by a back pressure
Data Source
AI summary
The present invention relates to a device (1) for the generation of micro and nano bubbles of gas in a liquid comprising: an outer tubular body (10) with an extension along a longitudinal axis a-a; an inlet (20) for a flow of liquid; an outlet (30) of the flow of liquid in fluid communication with said inlet (20); a central body (40) contained in a central area of said outer tubular body (10). The central body (40) comprises—a pre-chamber (41) containing a gas; —an air intake (42) in connection with said pre-chamber (41) and with an external source of gas; —a converging element (52), configured to concentrate the flow of liquid at the inlet; —a Venturi chamber (44) in fluid contact with said pre-chamber (41), configured to suck the gas from the pre-chamber (41) and generate micro and nano bubbles of gas in the liquid that passes through it.