Nozzle Design for Micro Bubble Generation via Pressure Drop
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Solution Overview
Problem
Existing nozzles that produce micro bubbles in bathing systems are often complex and expensive, making them less accessible for maximizing micro bubble production in bath water, which diminishes the bathing experience and potential health benefits.
Innovation Solution
A simple nozzle design featuring a chamber with an inlet and outlet port, a discharge channel with an increasing diameter, and an offset outlet port to create turbulence and pressure drop, facilitating the formation of micro bubbles from gas-saturated liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complex nozzle systems are used to maximize micro bubble production, then micro bubble generation is improved, but device complexity and cost increase
Solution Approach 1:
The nozzle is divided into distinct functional sections: a chamber for receiving gas-saturated liquid, a discharge channel for controlled flow, and an expansion zone where micro bubbles form. This segmentation allows each section to perform its specific function efficiently while keeping the overall structure simple and cost-effective.
Solution Approach 2:
The nozzle design uses the natural pressure drop that occurs as liquid flows from the chamber through the discharge channel to the outlet. This self-generated pressure differential automatically creates the conditions needed for micro bubble formation without requiring external control mechanisms or complex systems.
2Device complexity
If a simple nozzle design is used, then device complexity is reduced, but micro bubble production decreases
Solution Approach 1:
The nozzle utilizes changes in flow parameters (pressure and velocity) as the liquid moves through the discharge channel and into the expansion zone. The natural pressure drop and velocity changes automatically create optimal conditions for gas bubble formation and fragmentation into micro bubbles, achieving high productivity without complex structures.
Solution Approach 2:
The design leverages hydraulic principles by using the flowing liquid itself to create the pressure differential needed for micro bubble generation. The discharge channel geometry is designed to optimize the hydraulic flow characteristics, allowing the liquid's own movement to generate the conditions for effective micro bubble production.
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 nozzle design effectively generates micro bubbles in a cost-effective manner, matching the performance of more complex systems while providing a pleasing and potentially health-beneficial bathing experience.
Implementation Method 1
This structure can cause a pressure drop in liquid traveling from the inlet end to the outlet end
Implementation Method 2
The discharge channel or outflow passage can have an increasing diameter from the inward end to the outlet end, such as one that increases continually and smoothly. This can cause a pressure drop in liquid travelling through the discharge channel or outflow passage causing gas dissolved in the liquid to form bubbles therein
Implementation Method 3
These shapes, along with the tangential inlet pipe can advantageously cause incoming liquid to swirl vigorously around the chamber
Data Source
AI summary
A nozzle can produce bubbles from a liquid saturated with gas desirable in bathing. The nozzle can have a housing forming a first chamber for receiving a liquid. The nozzle can have an intermediate chamber located between the outlet of the first chamber and the inlet of the outflow passage. The nozzle can have a generally cylindrical structure enclosing the outflow passage and having a central longitudinal axis extending into the outlet of the first chamber. The intermediate chamber can have a first wall generally perpendicular to said axis and surrounding the outlet from the first chamber and second wall spaced from said first wall and generally parallel thereto and surrounding the inlet to the outflow passage.