超声波喷嘴雾化性能影响因素的研究

Study on Influence Factors of Atomization Performance of Ultrasonic Atomizer

为研究新的雾化方式并将其应用于实际的油雾润滑系统中,针对流体动力式超声波喷嘴,设计其雾化性能测试系统。通过测量喷嘴产生的油雾浓度和喷嘴的流量,研究喷嘴在不同进气压力、进出口压差时的雾化性能。研究结果表明:随着喷嘴进气压力的增大,油雾浓度先增大后减小,喷嘴流量先增大后趋于恒定,喷嘴的进口压力最佳值为0.5 MPa;增大喷嘴进出口压差可以明显地提高油雾浓度和喷嘴的流量,喷嘴的雾化性能得到显著提升。

In order to study the new atomization method and apply it to practical mist lubrication system, the atomization performance test system is designed for fluid dynamic ultrasonic atomizer. By measuring the oil mist density and flow rate under different inlet air pressure and pressure difference between inlet and outlet, the atomization performance of fluid dynamic ultrasonic atomizer is studied. The results indicate： when the inlet pressure of air increases, the oil mist density first increases then decreases and flow rate first increases then remains at a certain value. The optimum inlet pressure is 0.5 MPa. Oil mist density and flow rate increase with the increase of pressure difference between inlet and outlet, and the atomization performance is enhanced significantly.