Micro-combustor based on liquid fuel

A micro-combustion, liquid fuel technology, applied in burners, combustion methods, combustion types, etc., can solve the problems of single fuel type, weak functionality, and high production costs, and achieve high ignition success rate, reduced geometric size, and improved use. effect of life
CN109307264AActive Publication Date: 2019-02-05BEIJING POWER MACHINERY INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING POWER MACHINERY INST
Publication Date
2019-02-05

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Abstract

The invention relates to a micro-combustor based on a liquid fuel, and relates to the technical field of engines. According to the micro-combustor based on the liquid fuel provided by the invention, firstly, the species of fuel oil have no any limitation, so that various liquid-state fuels and even gas-state fuels can be adopted; secondly, the fuel oil is preheated so as to be ensured to be high-efficiently evaporated and combusted; thirdly, the ignition delay is shortened, the success rate of ignition is improved, and the fuel oil and fuel gas residence time can be prolonged with a smaller size, so that the geometric dimension required for an ignitor is reduced; and fourthly, the heat load formed in the inner wall during the combustion process can be effectively absorbed, so that the surface temperature is reduced, and the service life of the combustor is prolonged.
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Description

technical field

[0001] The invention relates to the technical field of engines, in particular to a micro burner based on liquid fuel. Background technique

[0002] Liquid fuel-based micro-combustors refer to micro-combustion devices in which the burner uses liquid fuel as fuel and air as the oxidant, and the air flow unit of the burner is on the order of "grams per second" (generally less than 5g / s). This combustion device has great application potential in micro-electromechanical systems. The heat loss rate of the micro burner is proportional to the surface area / volume (S / V) and the temperature of the outer wall. The S / V of the micro burner is 2 to 3 orders of magnitude larger than that of the conventional scale, and the increase of heat loss leads to the flame instability. , flameout, thermal efficiency reduction, etc. Compared with gaseous fuels, liquid fuels have the advantages of high energy density, easy transportation and storage. The current micro-burners are main...

Claims

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