A micro burner with controllable flame position

Abstract

The invention provides a micro-combustor capable of controlling a flame position. The micro-combustor is characterized in that a combustion chamber is arranged in the combustor, and the two ends of the combustion chamber are provided with an inlet and an outlet respectively; each of two opposite wall surfaces of the combustion chamber is provided with a plurality of special-shaped grooves corresponding to each other in a one-to-one correspondence mode, at least one movable blunt body is arranged between the two corresponding special-shaped grooves, and the blunt body material is made of magnetic materials; and a movable magnetic device is arranged outside the combustor, through the moving of the movable magnetic device, the blunt bodies can move in the special-shaped grooves. The special-shaped grooves are in an "E" shape or in a Chinese character "wang" shape or in an inverted "E" shape. One blunt body is placed in each special-shaped groove in the "E" shape or the inverted "E" shape,and two blunt bodies are placed in each special-shaped groove in the Chinese character "wang" shape. According to the micro-combustor, the residence time of mixed gas in a channel can be improved, the combustion efficiency can be improved, and the range of the combustible flow rate can be expanded.

Description

technical field [0001] The invention relates to the technical field of micro-thermal photoelectric systems, in particular to a micro-burner capable of controlling the flame position. Background technique [0002] The micro power electromechanical system converts the chemical energy of hydrogen or hydrocarbon fuel into heat energy directly through combustion in the micro system, and then relies on various energy conversion methods to provide power or generate electrical energy. The energy density of this type of system can reach 10W / cm 3 ~100W / cm 3 , which is an order of magnitude higher than conventional batteries, and has the advantages of low cost, stable performance, and environmental friendliness. However, as the size of the combustion chamber decreases, its specific surface area increases, resulting in a greatly increased heat dissipation rate, which makes the conventional flame unstable and prone to wall flameout; secondly, the residence time of the mixture in the ch...

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Problems solved by technology

However, as the size of the combustion chamber decreases, its specific surface area increases, resulting in a greatly increased heat dissipation rate, which makes the conventional flame unstable and prone to wall flameout; secondly, the residence time of the mixture in the channel is shortened. , the flame is easy to concentrate at the burner inlet, and the flame is easy to be blown out under the condition of large flow rate; in addition, when porous media or multiple rows of blunt bodies are added to the channel, the space of the combustion chamber is reduced, and the combustion area is narrow and long, which is not conducive to flame propagation and Stablize

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