This work demonstrates that a needle-ring discharge device combined with an ion-wind generator can realize a plasma-jet system of self-inlet gas, replacing huge, unportable carrier-gas systems. First, a needle-ring atmospheric-pressure plasma-jet device is designed and manufactured. The effects of a dielectric tube and the discharge voltage on the jet characteristics are analyzed. The results show that a needle-ring discharge device with a dielectric tube can produce a long, stable plasma jet under a high DC applied voltage. Second, such a device and a 10-stage ion-wind device are combined into an integrated device, and the discharge characteristics are studied. The results show that an ion wind with a speed of 2.62 m/s can be generated when a DC voltage of −13 kV is applied to the ion-wind device. The plasma jet produced by the integrated device is longer and brighter when the ion wind is included. Finally, the ion wind is found to enhance the sterilization effect of the jet and greatly increase the sterilization range.

中文翻译：

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离子风增强等离子体喷射灭菌

这项工作表明，将针环式放电装置与离子风发生器结合使用，可以实现自进气的等离子喷射系统，从而取代庞大的，不可携带的载气系统。首先，设计并制造了针环式大气压等离子体喷射装置。分析了介电管和放电电压对射流特性的影响。结果表明，带有介电管的针环放电装置可以在高直流电压下产生长而稳定的等离子流。其次，将这种装置和十级离子风装置组合成一个集成装置，并研究其放电特性。结果表明，将-13 kV的直流电压施加到离子风装置时，可以产生速度为2.62 m / s的离子风。当包括离子风时，由集成设备产生的等离子体射流更长，更亮。最后，发现离子风增强了射流的杀菌效果，并大大增加了杀菌范围。