To improve the trapping efficiency of respiratory dust by aerodynamic atomization, reduce the energy consumption and the requirements for the working conditions of nozzles and maintain the health and safety of workers, a comparative experiment evaluating aerodynamic atomization dust removal characteristics was conducted with a self-developed supersonic siphon atomization nozzle, which utilizes a Laval nozzle as the core, and an existing ultrasonic atomization nozzle. The experimental results showed that the new type of nozzle, from the perspectives of droplet speed, conservation of water and pressure, range, and attenuation view, completely surpasses the traditional pneumatic atomization nozzle. A supersonic antigravity siphon atomizer produces a cloud fog curtain composed of high-speed droplets and high-speed air. The particle size of the droplets is less than 10 µ. At the same flow rate of water, its dust removal rate is twice as high as that of ultrasonic nozzles. When the dust removal efficiency is the same, the water consumption of the supersonic siphon atomizer nozzle is 1/2, the air flow rate is 1/3, and the power consumption is 1/2 that of the ultrasonic atomizing nozzles. Siphon atomization can siphon at a total air pressure of 0.2 MPa, and the siphon pressure can reach 0.03 MPa at a total air pressure of 0.4 MPa, which increases with the increase in total inlet air pressure. For the first time, the process of siphoning and nozzle internal atomizing in the field of supersonic atomization dust removal is truly realized. The ultrafine sized droplets with high speeds produced by the new nozzle allow them to cover the limited working space in a shorter time, have a more effective trapping effect for a large number of fine dust particles, and quickly suppress the dust with greater kinetic energy. Therefore, the requirements for the working conditions are reduced, which will save more energy compared to the currently used nozzles available on the market.

为了通过气动雾化提高呼吸道粉尘的捕集效率，降低能耗和降低喷嘴的工作条件要求，并维护工人的健康和安全，我们进行了一项自行开发的评估气动雾化除尘特性的对比实验。以拉瓦尔喷嘴为芯的超音速虹吸雾化喷嘴和现有的超声波雾化喷嘴。实验结果表明，从滴速，保水保压，范围和衰减的角度来看，新型喷嘴完全超越了传统的气动雾化喷嘴。超声波反重力虹吸雾化器产生由高速液滴和高速空气组成的云雾幕。液滴的粒径小于10μ。在相同的水流量下，其除尘率是超声波喷嘴的两倍。当除尘效率相同时，超音速虹吸式雾化喷嘴的水消耗为1/2，空气流量为1/3，功耗为超声波雾化喷嘴的1/2。虹吸雾化可以在总气压为0.2 MPa的条件下虹吸，而虹吸压力在总气压为0.4 MPa的条件下可以达到0.03 MPa，随总进气压力的增加而增加。真正实现了超音速雾化除尘领域虹吸虹吸内部雾化的过程。新喷嘴产生的高速超细液滴可使其在较短的时间内覆盖有限的工作空间，对大量细微的粉尘颗粒具有更有效的捕集效果，并以较大的动能快速抑制粉尘。因此，减少了对工作条件的要求，与市场上当前使用的喷嘴相比，它将节省更多的能量。