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Ask an Expert Forum MMM (Multifrequency, Modulated, and Multi-wave) Ultrasonic Technology
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MMM (Multifrequency, Modulated, and Multi-wave) Ultrasonic Technology

Rick1234
Rick1234 23 days ago

Hello Element14 community!

My quest is to build an MMM ultrasonic water treatment system for use in the motel and laundromat industries.  

Basically, to ultrasonically negate the scaling ability of the minerals in the water before they can form on the inside of the pipes and heat exchangers walls.

The MMM paradigm greatly eases the normally strict mechanical ultrasonic interface to the target load ..... as the MMM generator constantly frequency "sweeps" and "optimizes" its effects on the scaling minerals in the water.    

My early thoughts:

PC control to set parameters (power, frequency sweep, modulation, etc)  +  Adaptive Digital Signal Processor (ADSP)  + Ultrasonic Power Driver  

Minimum ultrasonic "contact" time with the scaling minerals (calcium & magnesium)  during a max. 50 gpm water flow rate = 1.5 seconds

Ultrasonic transducer and horn to be of a "clamp-on" type design (ie: surrounding the water feed pipe)

The main attribute of MMM is its ability to "self-adapt" to any varying physical sonic envelope and load ..... on-the fly! (w/feedback loop sensor) 

Its my contention, that in this application, the sonic envelope (pipe) and load (water) is "fixed" and should afford a simpler software implementation script. 

Where to start?  (Note: i'm day one working with ultrasonics!)    

Can anyone recommend a preassembled factory evaluation ADSP board suitable for this application and an ultrasonic power driver board?  

Thank-you!

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  • michaelkellett
    michaelkellett 23 days ago +1 suggested
    I am extremely dubious that ultrasonic excitation of water in pipe will have any effect at all on scaling downstream of the excitation area. Do you have any research data that suggests this actually…
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  • Rick1234
    0 Rick1234 14 days ago

    I had assumed "cavitation" was always accompanied by an ending implosion !    :  (

    With ultrasonics you can have both "stable" and "inertial" cavitation under your control!

    For use in my ultrasonic "nucleation" of the scaling minerals, only a stable cavitation is required and has a significantly low power demand.

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  • Rick1234
    0 Rick1234 14 days ago

    I had assumed "cavitation" was always accompanied by an ending implosion !    :  (

    With ultrasonics you can have both "stable" and "inertial" cavitation under your control!

    For use in my ultrasonic "nucleation" of the scaling minerals, only a stable cavitation is required and has a significantly low power demand.

    image

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  • Rick1234
    0 Rick1234 13 days ago in reply to Rick1234

    Abandoning the originally pic'd  "clamp-on" type transducers!

    That method requires too much ultrasonic energy that way.

    Submerging the transducers into the "nucleation chamber" (pipe!) with a direct water contact requires a much lower power demand.

    I now don't believe I require the complexity of an MMM ultrasonic paradigm for this "water treatment" setup   ..... as the water's path to be treated flows tightly "captive"  to the confines of  the nucleation chamber affording a uniform nucleation of the minerals passing thru. 

    My thoughts are to alternately fire the ultrasonic transducers for a uniform nucleation of the water ...... but, without "imploding"!

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