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송민근(Mingeun Song),이경렬(Kyungyoul Lee),나우정(WooJung La),주은선(Eunsun Ju) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
Characteristics of the twin fluid spray with ultrasonic forcing are examined in order to obtain the high efficiency of cold fog spray of the automatic pest control machine which has been widely used for the equipment cultivation recently.<br/> An electrostrictive vibrator of PZT BLT and a magnetostrictive vibrator of π type with 28kHz are<br/> applied as the ultrasonic transducer. All experiments are made and observed in 4 methods of spray ; a conventional spray method without ultrasonic forcing, an indirect vibration method with ultrasonic forcing. an improving quality method by ultrasonic forced within liquid. and a combined use method with both of the indirect vibration method and the improving quality method. In results, It was clarified that the ultrasonic effects the atomization of spray droplets and especially much more in the case of the combined use method.