Perfection by Design
Ultrasonic Processing Equipment Construction Details
Every ultrasonic system has (3) interdependent electrical assemblies. Generators, control circuits and triggers, and magnetostrictive transducers. These modular assemblies are configured to maximize the processing kinetics for the installation. Ultrasonics will be able to operate at full performance.
The ultrasonic generator converts 50/60 Hz AC power into high-frequency ultrasonic power. The generator is a trigger controlled power driver optimized to activate a particular transducerized load. The high-frequency power signal forces the transducers to vibrate at the frequency determined by the trigger. Vibrating transducers create the intense sound field of pressure waves within the ultrasonic processing chamber. This sound pressure wave fluctuating intensity is responsible for the useful work produced by the ultrasonic reactor.
The generator's load can be a single transducer element or multiple transducer banks. A transducer bank is a group of (2) or more transducer elements driven by a single ultrasonic generator. We combine multiple transducer banks into a large single system for processing vast volumes of material.
Multiple generators are grouped and synchronized to deliver uniform and consistent peak-to-peak displacement. A single trigger pulse is used to synchronize all generator & transducer groups to operate in unison. The ultimate power using ultrasonics delivered to the process solution is magnified by this team effort.
Fixed Ultrasonic Power
We build our larger systems in 2,000 Watt increments. The trigger pulse control for the 2,000 Watt generator may be synchronized for our multiple generator systems.
Variable Ultrasonic Power
Generator Control Circuits
The control of various ultrasonic operating parameters is determined by the trigger and related control circuits. Common features for our systems include:
Sweep Frequency Operation (SFO)
Ultrasonic Pulsed Operation (UPO)
The "ON time" allows the generator to swiftly ramp up to full ultrasonic power. Microscopic dissolved gas bubbles within the process solution will coalesce during the ultrasonic ON cycle.
The quiet time offers the ability for the coalesced gas molecules to rise within the acoustically activated solution. The rate in which the coalesced bubbles rise is dependent upon buoyancy forces, viscosity, dwell time in the ultrasonic chamber, and fluid flow characteristics. Our UPO feature offers the ability to activate the ultrasonics in either a continuous ON mode or in the pulsed mode.
We have found that the permanent performance of our silver-brazed magnetostrictive transducers is critical to the long-term success of the ultrasonic installation. Transducer performance consistency is assured by our choice of magnetostrictive elements and our permanent silver-brazed bond.
The wrought family of magnetostrictive alloys are unique. The material may be subjected to fluctuating magnetic field stresses indefinitely without deterioration in performance. This physical phenomena is unmatched by other transducer types.
The silver-brazed metallurgical bond is acoustically perfect for transmitting energy. Sound energy passes through the joint without detectable attenuation. The bonding strength and energy transmission effectiveness of the silver-brazed bond is ideal for transferring transducer power into the processing solution.
Transducer Styles Available
We offer (3) different styles of magnetostrictive transducers. Zero-Spaced lamination transducers, zero-spaced Window Lamination transducers, and Spaced-Lamination transducers. Each transducer group has it's own unique set of characteristics. Optimum processing performance is strongly influenced by the transducer style chosen.
Our Zero-Spaced and our Window Lamination transducers are ideal for driving massive loads with high power. The vibrating inertia (from the large mass of the zero-spaced transducer laminations) is insensitive to varying operating parameters that suppress acoustic power transmission.
Many Zero-Spaced lamination transducer elements may be mounted in large arrays to process large volumes of material. Our Zero-Spaced laminations can be ganged into transducer banks and driven synchronously for large processing systems/installations. This packaging arrangement offers an economical approach to large system construction.
Our Window Lamination transducer is truly a solid state device. The transducer element is constructed from a stack of brazed transducer laminations and a coil of wire to magnetically energize the assembly. The Window Lamination transducer is perfect for installations in which the ultrasonic device is subjected to external shock loading and/or external high-intensity vibrations. The Window Lamination transducer is robust and cannot be shaken apart.
Spaced Lamination transducer systems deliver a uniform energy profile across the length and width of the diaphragm plate. This unique configuration offers us the ability to match the impedance of the actual transducer assembly to the load requiring acoustic treatment. The overall system performance and efficiency is dramatically increased with the Spaced Lamination transducer.
Our Continuous Acoustic Membrane transducer systems combined with our Dual-Frequency Processing Technology delivers an absolutely uniform acoustic energy profile across the length, width and gap of the energized chamber. The 3-Dimensional Reaction Chamber assures uniform and consistent ultrasonic treatment for every particle passing through.
Anodes, Cathodes, and Electrode Plates
Electro-Acoustical Reaction Cell.
Electro-Acoustical Extraction Cell.
Electro-Acoustical Membrane Cell.
November 28, 2005