Microsystem for converting pressures and compression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microsystems for transforming pneumatic energy into mechanical displacement suffer from significant friction losses due to rotational components, complex manufacturing processes, and reduced energy efficiency at low fluid flow rates.
Innovation Solution
A microsystem with articulated arms that move in translation, eliminating the need for non-return and check valves, and utilizing an electromechanical transducer to convert mechanical energy into electrical energy, operating at resonance frequency to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If rotational components (rotor) are used to transform pressure difference into mechanical displacement, then the microsystem can achieve mechanical energy conversion, but friction losses increase significantly reducing energy efficiency
Solution Approach 1:
The patent replaces the traditional rotational mechanical system (rotor-stator) with a translational mechanical system using articulated arms that move linearly back and forth. This substitution eliminates the friction associated with rotational bearings and contacts while maintaining the pressure-to-mechanical-energy conversion function through the oscillating motion of the articulated arm mechanism.
Solution Approach 2:
The invention extracts and removes the rotational components (rotor) from the system, retaining only the essential translational motion elements. By taking out the problematic rotational elements that cause friction losses, the system achieves lower energy loss while maintaining core functionality through the articulated arm's reciprocating motion.
2Ease of manufacture
If rotational components are used in the microsystem, then mechanical energy conversion is achieved, but the production process becomes complex requiring stacking of numerous semiconductor wafers
Solution Approach 1:
The patent replaces the complex rotational mechanism with a simpler translational articulated arm system that can be manufactured using standard planar semiconductor fabrication techniques. This substitution enables single-wafer manufacturing without the need for complex 3D stacking of multiple wafers required for rotational components, significantly simplifying the production process.
Solution Approach 2:
The invention transitions from a three-dimensional rotational structure requiring multi-wafer stacking to a two-dimensional planar structure that can be fabricated on a single wafer. The articulated arms operate in a planar space, allowing the entire mechanism to be manufactured in one fabrication layer rather than requiring complex vertical integration of multiple wafers.
3Use of energy by moving object
If conventional microsystems operate at high fluid flow rates, then good energy efficiency is achieved, but efficiency degrades significantly at low or very low flow rates
Solution Approach 1:
The patent employs a dynamic articulated arm mechanism that can adapt its motion characteristics to varying flow conditions. The system maintains efficient energy conversion across a wide range of flow rates by allowing the articulated arms to oscillate with amplitudes and frequencies that naturally respond to the incoming fluid pressure, enabling effective operation at both high and very low flow rates.
Solution Approach 2:
The invention utilizes resonant oscillations of the articulated arm mechanism to enhance energy efficiency at low flow rates. By designing the system to operate at its natural resonant frequency, the articulated arms can maintain large amplitude oscillations even with minimal driving pressure, thereby maintaining high energy efficiency across varying flow conditions including very low flow rates.
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 microsystem achieves high energy efficiency even at low fluid flow rates, simplifies manufacturing, and reduces energy consumption by eliminating the need for multiple semiconductor wafer stacks and rotational components.
Implementation Method 1
transforming pneumatic energy originating from a pressure difference in a fluid into a mechanical displacement
Implementation Method 2
at least one transducer capable of converting the mechanical energy produced by the movement of the arms into another energy
Implementation Method 3
operating at resonance frequency to enhance efficiency
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a microsystem for converting a difference in pressures in a fluid into mechanical movement, this microsystem comprising: - an inlet nozzle (6) for compressed fluid and an outlet nozzle (8) for expanded fluid, - at least two arms (12, 14), at least one of which is hinged and between which flows the fluid in order to pass from the inlet nozzle to the outlet nozzle by moving these arms with respect to one another, the arms (12, 14) being designed and hinged such that, while they move, they define at least one pocket of fluid which is moved away from the inlet nozzle in order then to return to the outlet nozzle while at the same time increasing in volume, each of the arms (12, 14) being mechanically connected to a single plane (20).