Ultrasonic vapor degreasing

LED series Ultrasonic vapor degreaser conductive drying/reduced emissions (high volume production) N/A N/A HCFCs, HFCs, HFEs, NPB, and chlorinated solvents... 

Unlike cold-cleaners, vapor degreasers lose relatively small amounts of solvent as solid waste or liquid drag-out. Most emissions are due to vapor loss and the loss level is highly dependent on operator and operating conditions. Solvent losses for a poorly operated open-top vapor degreaser may be eight or more times greater than for a well-operated unit (Branson Ultrasonics Corporation, 1988). 

Table 4.8 Examples of vapor degreasers and ultrasonic cleaning equipment ...

Table 4.8. Examples of Vapor Degreasers and Ultrasonic Cleaning Equipment... 

Vapor degreasers are available with ultrasonic transducers built into the clean solvent rinse tank. The parts are initially cleaned either by the vapor rinse method or by immersion in a boiling solvent. They are then immersed for ultrasonic scrubbing, followed by rinsing with vapor or spray plus vapor. ... 

Commonly used in atmospheric open-top vapor degreasers, and enclosed vapor degreaser which operate at atmospheric pressure, ultrasonic transducers are seldom found in machines which create a vacuum environ-ment " ". The reason is perceived cost — of the needed... 

Hie problems noted in Footnotes 38 to 41 can add an additional 200 to 300% to the required investment for each package of500 to 600 watts of ultrasonic power. That increase should not he determinant because a conventional transducer package only costs aroimd 2000 to 3000 not a significant portion of the investment of any enclosed airtight vapor degreaser. Unfortunately it has become often determinant. 

Some equipment components used for vapor degreasing are similar to those used in ultrasonic cleaning. Ultrasonic cleaning equipment consists of an immersion tank, high frequency sound generator, and heater as shown in Fig. 11-5. Vapor degreasing and ultrasonic equipment are commercially available as separate units or combined in one unit, which may include a spray wand. 

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