Abstract
In this paper, we find that the dynamic cone angle of a piezoceramic atomizer is linked to periodic changes in the volume of the micro-cone hole of the atomizer, and such changes affect atomization performance. Firstly, we explained the theory of the dynamic cone angle inside the vibrating mesh atomizer. Then, we analyzed the flow status of liquid in the micro-cone hole, and the one-way flow Rof the liquid is caused by the difference of diffuser and nozzle flow resistance. The volume change of the micro-cone hole and the liquid chamber can produce atomization. Furthermore, we developed the experiment to measure the atomization rate, atomization height, and the diameter of the atomized particles. The experiments reveal that the atomization rate and height are much larger when the vibrating mesh atomizer is working in the forward path than in the reverse one. The atomization rate and atomization height increase as the working voltage increases. Meanwhile, with increasing driving voltage to the piezoceramic actuator, the atomization particle size decrease and the atomized particle size distribution is more concentrated. Finally, the size of the micro-cone hole was measured using a microscope with different direct current (DC) voltages, further demonstrating the existence of the dynamic cone angle.
Highlights
The past century has been characterized by rapid advances in materials development, especially in functional materials, such as piezoceramic materials
The size of the micro-cone hole was measured using a microscope with different direct current (DC) voltages, further demonstrating the existence of the dynamic cone angle
10 shows the deformation frequency sweep curvesof ofthe the piezoelectric vibration velocity and amplitude, vibration rates at themodes resonance points. points, In thisdeformation experiment,diagram the flared end of the atomizer is attached to the water of resonance of the piezoelectric oscillator and atomization rates tank the resonance points
Summary
The past century has been characterized by rapid advances in materials development, especially in functional materials, such as piezoceramic materials. Piezoceramic materials and devices are still being actively researched to achieve better performance with lower cost and less environmental impact [17,18,19]. One of the actively researched piezoceramic devices is the atomizer, which utilizes a piezoceramic actuator to convert liquid to atomized particles through high frequency ultrasonic vibration; it can cause ultrafine droplet atomization. Ultrafine droplet atomization is widely applied in combustion with liquid fuel [20], inhalation therapy [21,22,23], printed circuits [24], three-dimensional (3D) prototyping [25], precise surface coating [26,27], spray drying [28], spray cooling [29,30], and inkjet printing [31], Appl.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
