Microwave plasma torch ignition method

Abstract

The invention discloses a microwave plasma torch ignition method, which belongs to the technical field of microwave application. Amicrowave plasma torch is adopted to input working gas into the discharge tube; the microwave generator is started, the working mode is set to be a pulse wave working mode, and the microwave generator inputs pulse waves into the working gas in the discharge tube throughthe microwave conveying device; whether the working gas in the discharge tube generates plasma or not is determined; working gas in the discharge tube generates plasmas, the microwave generator switches a pulse wave working mode into a continuous wave working mode, and the microwave generator inputs continuous waves into the working gas in the discharge tube through the microwave conveying device. According to the microwave plasma torch ignition method, point discharge structures such as a probe are not needed, a complex probe action mechanism is omitted, automatic ignition can be achieved, and the microwave plasma torch ignition method has the advantages of being stable, reliable, long in service life of parts and the like.

Description

technical field [0001] The invention belongs to the field of microwave application technology, and in particular relates to a microwave plasma torch ignition method. Background technique [0002] The plasma is generated in the discharge tube of the microwave plasma torch, and the electric field strength of the generating device is required to reach the breakdown field strength of the working gas in order to ionize the working gas and generate active plasma components. The electric field strength required to excite the plasma at atmospheric pressure is often much higher than the electric field strength required to maintain the plasma, especially in the microwave plasma discharge, it is necessary to apply a high-intensity local electric field to excite the working gas discharge. For continuous wave microwave plasma discharge, it only needs to be ignited once and then removed from the excitation device to maintain the plasma discharge process through continuous microwave input ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a microwave plasma torch ignition method for the above disadvantages, and how to solve the problem of how to avoid the tip discharge structure and the complicated auxiliary action ignition structure, realize automatic ignition, and make the microwave plasma torch reliable and stable, zero issues such as long component life

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