Micro-gas Pressure Driving Apparatus Using Piezoelectric Resonance
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Solution Overview
Problem
Conventional pneumatic apparatuses for fluid transportation are bulky, noisy, and not portable, failing to meet miniaturization requirements in industries such as pharmaceuticals and printing, where compact and silent operation is necessary.
Innovation Solution
A micro-gas pressure driving apparatus integrating a miniature gas transportation module with a piezoelectric actuator and a miniature valve module, utilizing a resonance membrane and valve mechanism to efficiently transport and manage gas pressure in a compact, silent, and portable form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional motors or pressure valves are used in pneumatic apparatus, then gas transportation function is achieved, but the apparatus becomes bulky and not portable
Solution Approach 1:
The pneumatic apparatus is divided into multiple functional modules: a driving module containing a piezoelectric actuator, a resonance module with a diaphragm, and a valve module. Each module performs a specific function, allowing the system to achieve reliable gas transportation while maintaining a compact overall structure through modular design.
Solution Approach 2:
The patent replaces conventional motors and mechanical pressure valves with a piezoelectric actuator that utilizes piezoelectric effect and acoustic resonance to drive gas flow. This substitution eliminates bulky mechanical components while maintaining the essential gas transportation function through acoustic wave generation.
2Object-affected harmful factors
If conventional motors or pressure valves are used in pneumatic apparatus, then gas transportation function is achieved, but annoying noise is generated
Solution Approach 1:
The patent replaces noisy mechanical motors and pressure valves with a piezoelectric actuator system that generates acoustic waves through resonance. This substitution significantly reduces mechanical noise while maintaining effective gas transportation through the resonance-driven acoustic field.
Solution Approach 2:
The piezoelectric actuator operates by generating periodic acoustic waves at resonant frequencies of the diaphragm and gas column. This periodic action efficiently transports gas through the system while producing minimal noise compared to continuous mechanical operation of conventional motors.
3Volume of moving object
If the apparatus is miniaturized for portability, then compactness is achieved, but gas transportation efficiency may be compromised
Solution Approach 1:
The patent utilizes acoustic resonance and mechanical vibration of the diaphragm to enhance gas transportation efficiency within the miniaturized structure. The resonant vibration amplifies the acoustic pressure waves, enabling effective gas flow despite the small size of the apparatus.
Solution Approach 2:
The patent optimizes parameters such as the resonant frequency, acoustic pressure amplitude, and dimensions of the gas channel to maximize gas transportation efficiency within the constrained miniaturized volume. By carefully tuning these parameters, the system achieves both compactness and maintained productivity.
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 achieves efficient gas transportation and pressure management in a compact, silent, and portable format, suitable for various industrial applications, enhancing user comfort and miniaturization needs.
Implementation Method 1
The piezoelectric actuator includes a suspension plate, an outer frame and a piezoelectric ceramic plate
Implementation Method 2
a resonance membrane has a central aperture corresponding to the central opening of the fluid channel plate
Data Source
AI summary
A micro-gas pressure driving apparatus includes a miniature gas transportation module and a miniature valve module. The miniature gas transportation module includes a gas inlet plate, a fluid channel plate, a resonance membrane and a piezoelectric actuator. A first chamber is defined between the resonance membrane and the piezoelectric actuator. After the piezoelectric actuator is activated to feed a gas through the gas inlet plate, the gas is transferred to the first chamber through the fluid channel plate and the resonance membrane and then transferred downwardly. Consequently, a pressure gradient is generated to continuously push the gas. The miniature valve module includes a gas collecting plate, a valve membrane and a gas outlet plate. After the gas is transferred from the miniature gas transportation module to the gas-collecting chamber, the gas is transferred in one direction, so that a pressure-collecting operation or a pressure-releasing operation is selectively performed.