Megasonic Transducer Assembly With Multi-Frequency Phase Control
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Solution Overview
Problem
Existing megasonic systems lack optimal performance, are costly, and often cause damage to objects being cleaned or processed due to inefficient energy distribution and resonance frequency management.
Innovation Solution
The system employs a megasonic transducer assembly with multiple piezoelectric ceramics and a phase shift network that generates multiple megasonic frequencies, allowing for selective production of frequencies within specific bands, and includes a processor for error detection and storage, enabling efficient energy delivery and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior art megasonic systems use single frequency transducers, then device complexity is reduced, but performance is suboptimal and damage occurs to parts
Solution Approach 1:
The transducer is divided into multiple piezoelectric ceramic elements (first piezoelectric ceramic and second piezoelectric ceramic) with different resonant frequencies, allowing the system to operate at multiple discrete frequencies to prevent damage while maintaining manageable complexity
Solution Approach 2:
The system dynamically switches between different operating frequencies (first frequency and second frequency) based on processing requirements, enabling adaptive control that prevents damage to parts while optimizing cleaning performance
2Adaptability or versatility
If prior art megasonic systems use fixed frequency operation, then device complexity is reduced, but adaptability to different cleaning requirements is limited
Solution Approach 1:
The megasonic generator is designed to universally produce multiple discrete frequencies (first frequency band and second frequency band) using a single device with switchable operating modes, providing adaptability without requiring multiple separate generators
Solution Approach 2:
The generator dynamically switches between different frequency bands based on processing requirements, enabling the system to adapt to various cleaning applications while maintaining a relatively simple generator design through controlled frequency switching
3Productivity
If prior art megasonic systems deliver intense megasonic energy, then cleaning effectiveness is improved, but damage occurs to the parts being cleaned
Solution Approach 1:
The system employs periodic switching between different frequency bands and energy levels during the cleaning process, allowing intense megasonic energy to be delivered in controlled intervals that achieve effective cleaning while preventing cumulative damage to sensitive parts
Solution Approach 2:
The system changes operating parameters (frequency and energy level) between first and second frequency bands to optimize cleaning effectiveness at different stages while preventing damage, using parameter variation to balance productivity and part protection
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 enhances performance, reduces costs, and minimizes damage by allowing precise control over energy delivery through multiple frequency bands and error monitoring, leading to improved cleaning and processing efficiency.
Implementation Method 1
a first piezoelectric ceramic (11) bonded to a second piezoelectric ceramic (12)... When the transducers are stimulated by the output signal from the generator to spatially oscillate, they transmit megasonics into the liquid
Implementation Method 2
The interaction between the megasonic-energized liquid and the object creates the desired cleaning or processing action
Data Source
AI summary
An ultrasound system for providing megasonics and ultrasonics to a liquid at different frequencies and/or sweeping frequencies with associated generators, transducers, operations between resonance and anti-resonance, non-resistive output with phase shift, multiple/sweep/single frequency modes, individually controlled sections, gate drive power control, variable inductive compensation for temperature changes, parallel inductor matching, stacked ceramics and non-volatile memory storage of fault, error and failure history.