Micro-combustor for metal mesh heat storage and flame stabilization and combustion method thereof

Abstract

The invention discloses a micro-combustor for metal mesh heat storage and flame stabilization and a combustion method thereof. The micro-combustor for the metal mesh heat storage and flame stabilization comprises a combustor outer barrel and an igniter arranged in the combustor outer barrel; a combustor comprises a hollow blunt body, a multi-hole medium disc and a metal mesh, wherein the longitudinal section of the hollow blunt body is in the shape of an inverted triangle, the multi-hole medium disc is arranged on the hollow blunt body, the metal mesh is arranged on the multi-hole medium disc, and the bottom of the hollow blunt body is connected with a fuel channel. By means of the multi-hole medium disc, it is guaranteed that fuel is dispersed evenly, the superficial area of the fuel is increased, and the evaporation rate is sped up. A high temperature low-velocity backflow zone is formed near an outlet of the hollow blunt body, the dwell time of the fuel is increased, the metal mesh is taken as a heat storage medium and has the functions of absorbing heat and releasing heat, and the flame temperature can be maintained at a certain level; compared with other combustors, by means of the micro-combustor for the metal mesh heat storage and flame stabilization, a flame can be made to be attached to the metal mesh stably, sharply swing or up and down fluctuation of the flame does not occur along with changes of working conditions, and the stability of combustion of liquid hydrocarbon under micro scale is greatly promoted.

Description

technical field [0001] The invention relates to a combustion device, in particular to a micro burner with a metal grid for heat storage and flame stabilization and a combustion method thereof. Background technique [0002] Since the end of the 20th century, microelectromechanical systems have attracted the attention of researchers. MEMS is generally composed of three parts: sensors, actuators and micro-energy sources. Its most notable feature is its small size and high system integration. With the deepening of research, the application of MEMS involves many fields, such as aerospace, information communication, medical treatment, biochemistry and so on. Micro-energy, as an important part of MEMS, provides the energy needed for MEMS to operate. At present, chemical batteries are generally used to provide energy for MEMS. However, traditional battery technology has low energy storage capacity and low energy density, which makes the entire system overweight and cannot provide ...

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Problems solved by technology

2. The residence time is short due to the reduction in size, and it is more difficult to completely burn the fuel. The combustion organization is not good, and a large amount of fuel will be discharged directly with the exhaust gas without burning, reducing the combustion efficiency.

Based on the above two points, it is difficult to carry out continuous, efficient and stable combustion at the micro scale

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