| 摘要: |
| 对超声波喷嘴的工作原理及工作特性进行了理论分析和试验研究,利用计算机图象处理技术重点研究了压电器件材料物性参数d33、激励电压A、喷射压力p、喷孔直径d0、喷嘴腔纵向尺寸δ及激励频率f对射流液滴形成的影响。研究表明：较低的射流压力和较小的喷孔直径以及较大的d33压电器件都有利于液滴的形成和工作稳定性,而激励频率f和喷嘴腔纵向距离δ都存在着最佳值。这些结论可以指导喷印机超声波喷嘴的设计。 |
| 关键词: 液体喷射 射流控制 超声波换能器 直流喷嘴 |
| DOI： |
| 分类号:V434.2 |
| 基金项目: |
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| AN EXPERIMENTAL STUDY ON ULTRASONI INJECTION NOZZLE |
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China Haiying Electro-Mechanical Technology Academy, Beijing, 100074
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| Abstract: |
| A study on principle and characteristics of ultrasonic nozzle is carried out theoreticallyand experimentally. By use of computerized CCD videodisplay technology,the effects of piezoelectricparameter d33,exciting voltage A,injecting pressure p,injection orifice diameter d0,nozzle gap 6 andexciting frequency f on jet break-up and droplet formation are emphatically investigated. It is shownthat lower injecting pressure,smaller orifice diameter,and greater piezoelectric parameter will improvethe droplet formation and the operation stabilization of ultrasonic nozzle. It is also indicated that thereare optimum nozzle gap and exciting frequency for droplet formatiom. All of these conclusions areavailable to design the nozzle of the ink jet printer. |
| Key words: Liquid injection Fluidic control Ultrasonic transducer Spray injector |
