Device for realizing large-area uniform dielectric barrier discharge and method

Abstract

The invention discloses a device for realizing large-area uniform dielectric barrier discharge and a method, which belongs to the field of new material synthesis, surface engineering and high voltage discharge. The device and the method of the invention are characterized by relating to an airflow velocity of a discharge gap of an electrode, a discharge distance specially for generating dielectric barrier discharge and parameters of a resonance frequency of a resonance power supply generating the dielectric barrier discharge and a pulse frequency of a pulse power supply. The relationship among the airflow velocity, the discharge gap distance and the frequency of the resonance power supply during the process of realizing large-area uniform dielectric barrier discharge coincides with an optimization relationship, and a corresponding discharge device is provided with parts matched with the above technical conditions. Effect economy is good, generality is strong, operation is simple, large-area uniform dielectric barrier discharge can be realized easily, and defects of low efficiency, dear equipment, complicated operation and the like for realizing large area uniformity by the prior dielectric barrier discharge are overcome.

Description

technical field [0001] The invention belongs to the fields of new material synthesis, surface engineering and high-voltage discharge, and aims at improving the efficiency and uniformity of dielectric barrier discharge. The key condition and implementation scheme of the dielectric barrier discharge device and method—the relationship that should be satisfied among the resonance frequency of the power supply, the discharge gap and the airflow velocity. Background technique [0002] In a dielectric barrier discharge (DBD) at atmospheric or higher pressure, the insulating medium between the electrodes can suppress the current growth to obtain a low-power, non-equilibrium plasma. Under most conditions, DBD exhibits a microfluidic filamentary discharge pattern. In the electrode gap of microstreamer discharge, the fast-pulse discharge that occurs generates a large number of short-lived active species (ions, free radicals, excited atoms and molecules). The chemical activity of DBD ...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a device and method for realizing large-area uniform dielectric barrier discharge in order to solve the shortcomings of poor versatility, applicability, economy and environmental protection in the existing large-area uniform dielectric barrier discharge, which can In the environment of normal pressure, the purpose of large-area uniform dielectric barrier discharge is achieved by controlling the discharge gap, discharge frequency and airflow velocity, thereby solving the above-mentioned deficiencies in the prior art

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