US 11,839,705 B2
Air purification device able to kill bacteria and viruses
Huacheng Zhu, Sichuan (CN); Yang Yang, Sichuan (CN); and Kama Huang, Sichuan (CN)
Assigned to SICHUAN UNIVERSITY, Sichuan (CN)
Filed by SICHUAN UNIVERSITY, Sichuan (CN)
Filed on Feb. 2, 2021, as Appl. No. 17/165,914.
Prior Publication US 2021/0178007 A1, Jun. 17, 2021
Int. Cl. A61L 9/20 (2006.01)
CPC A61L 9/20 (2013.01) [A61L 2209/14 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An air purification device able to kill bacteria and viruses, comprising an air channel, an air pump and a filtering device, and further comprising an electrodeless ultraviolet sterilization device, wherein: the electrodeless ultraviolet sterilization device is arranged inside the air channel; the electrodeless ultraviolet sterilization device comprises a microwave generator, an electrodeless ultraviolet tube and a uniform radiator; the uniform radiator is a coaxial cable with gaps provided thereon; the electrodeless ultraviolet tube is a columnar quartz tube which is hollow and comprises an interlayer, wherein mercury and argon are sealed in the interlayer; the coaxial cable is arranged in a hollow portion of the quartz tube; the coaxial cable is connected to the microwave generator through a microwave transmission line;
the coaxial cable is connected to the microwave generator through a microwave coaxial conversion device;
the microwave coaxial conversion device comprises an output antenna connected to a magnetron, a coaxial connector connected to the coaxial cable, and a conversion cavity for energy feeding;
the coaxial connector consists of an inner conductor and an outer conductor;
the inner conductor of the coaxial connector is higher than the outer conductor of the coaxial connector; and
the inner conductor is a rivet structure, wherein a radius of a first part of the inner conductor is larger than that of a second part of the inner conductor, the first part of the inner conductor is closer to the output antenna than the second part of the inner conductor, the first part of the inner conductor is a rivet cap part, and the rivet cap part is chamfered.