Piezoelectric Atomizer with Bypass Flow Path for Liquid-Gas Ratio Control
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Solution Overview
Problem
Existing atomizers face high design complexity in optimizing the liquid-gas ratio and gas flow velocity for effective atomization using the Venturi effect, limiting design flexibility and control over the atomization process.
Innovation Solution
The use of a piezoelectric pump system with multiple flow paths and a bypass mechanism allows for adjustable gas and liquid flow rates, reducing design complexity and enhancing control over the atomization process by optimizing the liquid-gas ratio and gas flow velocity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the constricted section is designed to optimize liquid-gas ratio and gas flow velocity for effective atomization using the Venturi effect, then atomization performance is improved, but device complexity and design difficulty increase significantly
Solution Approach 1:
The patent introduces a bypass flow path that allows dynamic adjustment of gas flow distribution. By controlling the bypass mechanism, the system can adjust the ratio of gas flowing through the constricted section versus the bypass path, enabling optimization of atomization performance without requiring complex fixed geometry design. This dynamic control reduces design difficulty while maintaining high atomization efficiency.
Solution Approach 2:
The patent enables parameter adjustment by varying the bypass flow resistance or opening degree, which changes the gas flow velocity and liquid-gas ratio in the constricted section. This allows the system to adapt to different atomization requirements without redesigning the constricted section geometry, thereby reducing design complexity while maintaining productivity.
2Manufacturing precision
If the constricted section geometry is optimized for specific liquid-gas ratio and gas velocity, then atomization quality is improved, but adaptability to different operating conditions deteriorates
Solution Approach 1:
The bypass flow path provides a dynamic adjustment mechanism that allows the system to adapt to different operating conditions. By adjusting the bypass opening or resistance, the gas flow distribution changes, enabling the same constricted section geometry to achieve optimal atomization quality under varying flow rates and liquid-gas ratio requirements, thus improving adaptability without sacrificing atomization quality.
Solution Approach 2:
The bypass mechanism enables the constricted section to serve multiple functions: it can operate in different flow regimes (laminar/turbulent), handle various liquid-gas ratios, and adapt to different gas flow rates. This multi-functionality allows a single constricted section design to achieve high atomization quality across a range of operating conditions, enhancing design flexibility.
3Productivity
If the gas flow velocity through the constricted section is increased to enhance the Venturi effect, then atomization performance is improved, but gas consumption and energy loss increase
Solution Approach 1:
The bypass flow path enables dynamic control of gas flow velocity through the constricted section. When high atomization performance is required, the bypass can be closed or restricted to maximize flow through the constricted section. When lower performance is acceptable or gas consumption needs to be reduced, the bypass can be opened to divert excess gas, thereby reducing energy loss while maintaining adequate atomization performance.
Solution Approach 2:
The bypass mechanism allows the system to use only the necessary amount of gas flow through the constricted section required for effective atomization, rather than forcing all gas through the high-velocity constricted path. This partial action through the bypass path reduces unnecessary energy consumption and gas waste while maintaining sufficient atomization performance.
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
This configuration enables more efficient and controllable atomization with reduced design difficulty, producing a fine spray with improved reliability and reduced pulsations, leading to higher atomization efficiency and compact device size.
Implementation Method 1
a first piezoelectric pump, a first flow path, a reservoir part, and a second flow path. The first piezoelectric pump ejects gas through an outlet
Implementation Method 2
When a jet of air ejected from the spray tank passes through the constricted section, a negative pressure is generated. This is known as Venturi effect. The Venturi effect causes the liquid in the reservoir to be drawn in and to mix with the air for atomization
Data Source
AI summary
An atomizer includes a first piezoelectric pump, a first flow path, a reservoir part, and a second flow path. The first piezoelectric pump ejects gas through an outlet. The first flow path has a first end and a second end. The first end of the first flow path is connected to the outlet of the first piezoelectric pump. A connection point is provided between the first and second ends of the first flow path. Liquid is to be stored in the reservoir part. The second flow path has a first end and a second end. The first end of the second flow path is connected to the liquid reservoir part. The second end of the second flow path is connected to the connection point.