Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Design and Driving Characteristics of Piezoelectric Ceramic Oscillator for Spraying of Liquid Material

액체 연료의 분무를 위한 압전 세라믹 진동자의 설계 및 동작 특성

  • 이수호 (경북대학교 전자전기공학부) ;
  • 석정영 (경북대학교 전자전기공학부) ;
  • 류기홍 (경북대학교 전자전기공학부) ;
  • 김한근 (경남정보대학 제어계측과) ;
  • 김진규 (상주대학교 전자전기공학과) ;
  • 류주현 (세명대학교 전기공학과) ;
  • 사공건 (동아대학교 전기공학과)
  • Published : 2002.07.08
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Abstract

The application of the ultrasonic nozzle has been extended because it is possible atomization of liquid material. In this study, the characteristics of the ultrasonic nozzle and ceramic oscillator were investigated. The oscillator for the ultrasonic nozzle were made piezoelectric ceramic of $Pb[(Sb_{1/2}Nb_{1/2})_{0.035}-(Mn_{1/3}Nb_{2/3})_{0.065}-(Zr_{0.49}Ti_{0.51})_{0.90}]O_3$. The electromechanical coupling factor$(k_p)$ and mechanical quality factor$(Q_m)$ showed the values of 0.555, 1,214 respectively when the Zr/Ti ratio was 49/51. Moreover, this oscillator will have the temperature stability because it's curie temperature is $322[^{\circ}C]$. The driving current of ultrasonic nozzle showed the value of 80[mA] when the driving time was 10[min.]. Also, The surface temperature of ceramic oscillator showed $80[^{\circ}C]$ at driving time 10[min.] We knew that the ultrasonic nozzle had stabile driving above 10[min.].

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