Patent ID: 11895764
Assignee: HANGZHOU CITY UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC H  Y | IPC H

Claim 0:
1. A needle-based synergistic double helix electrode dielectric barrier discharging tube, comprising: a quartz tube, wherein a high voltage electrode is sleeved at a central part of the quartz tube, an inner electrode is arranged inside the quartz tube, the end of the inner electrode is arranged with a drive fan, a discharging needle set is arranged on a surface of the inner electrode, a spiral discharging wire is suspended and disposed at a tip of each discharging needle of the discharging needle set; the discharging needle set comprises a first needle set and a second needle set, each of the first needle set and the second needle set comprises two discharging needles; the spiral discharging wire extends spirally to wind around each first needle set successively;
after a high voltage field is applied to the high voltage electrode, both the discharging needle set and the spiral discharging wire discharge, a discharging area inside the quartz tube is increased, the discharging needle set and the spiral discharging wire perform discharging at different time points, a treatment effect on a target gas and adaptability to the target gas are improved;
when the gas passes through the drive fan, a flowing direction of the gas changes, an airflow is disturbed, increasing a range of the target gas contacting energetic particles in the quartz tube and further improving the treatment effect;
when a flow rate of the target gas increases, the drive fan is impacted by the airflow to rotate to drive the inner electrode to rotate to further drive the discharging needle set and the spiral discharging wire to rotate, static tip discharging performed by the discharging needle set and wire discharging performed by the spiral discharging wire cooperatively form dynamic stereo discharging; under a same power, the treatment area and the spatial discharging uniformity on the target gas is further improved; the spiral discharging wire is configured to rotate to allow the gas to flow towards tips of the discharging needle set and towards an area where the spiral discharging wire is located, improving the treatment effect on the target gas;
a vertical distance from the spiral discharging wire to the surface of the inner electrode is equal to a height of the discharging needle.