A handheld large-area low-temperature plasma generator

Abstract

The invention discloses a handheld large-area low-temperature plasma generator which comprises an insulating shell. The insulating shell is provided with a gas inlet and a plasma outlet. In the insulating shell, a gas buffer cavity is formed between the gas inlet and the plasma outlet, and a dielectric barrier discharge unit is arranged between the gas buffer cavity and the plasma outlet. The dielectric barrier discharge unit comprises a second multi-hole disk electrode connected with a high-voltage electrode lead, and a first multi-hole disk electrode connected with a ground electrode lead. Multiple holes are respectively formed in the first multi-hole disk electrode and the second multi-hole disk electrode. Dielectric barrier guide pipes penetrate through the corresponding holes in the same straight line, and form a plasma jet array. The discharge unit is good in discharge uniformity, and generated active particle products are abundant; the plasma generating area is large, and therefore low-temperature plasma jets which are high in efficiency, uniform and rich in active ingredients can be generated.

Description

technical field [0001] The invention belongs to the technical field of low-temperature plasma biological environment application, and relates to a hand-held large-area low-temperature plasma generating device. Background technique [0002] In recent years, the research on low-temperature plasma and its application technology has gradually attracted the attention of the academic circles, and has become a research hotspot. The technology and method of how to generate large-area plasma in the air has been in continuous development and perfection, and great progress has been made. There are two types of discharge plasma sources in the existing air plasma discharge technology: one is low-pressure plasma; the other is atmospheric pressure plasma, such as corona discharge, (type) glow discharge, etc. [0003] With the rapid development of low-temperature plasma technology, its application advantages in biomedicine are not comparable to other physical or chemical methods. A large ...

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Problems solved by technology

Similar defects also exist in some recent patented inventions of plasma jet generation methods, devices and systems, such as U.S. Patent No. 5369336 "PlasmaGeneratingDevice" HideomiKoinumaetal.; Xidian University, China Li Xiaoping, Liu Donglin, Xie Kai, etc., The application (patent) No. CN201210254991.7 "Large-area uniform high-density plasma generation system with cooling electrodes" has increased input power and can generate larger plasmas; however, vacuum devices and complex cooling systems are required

The above factors have greatly limited the wide application of existing plasma jet technology and devices.

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