Premix rotational flow flat-flame type combustor for hot-air engine

Abstract

The invention discloses a pre-mixing swirling flow flat flame burner for heat engines, which comprises a firebox, an combustible gas intake pipe, an air intake pipe, a burner body arranged at top of a firebox, an air pre-heater, a lighter and a water gas discharging pipe. The burner body, shaped as a disc valve block, is evenly provided with combustible gas intake holes vertically and pre-heatingair intake holes along the circumferential direction; the pre-heating air intake holes incline with certain angles with the radial of the burner body; a truncated cone cavum is arranged at internal side at lower half of the burner body, which is communicated with the combustible gas intake holes and the air intake holes; the combustible gas and the pre-heating air sprayed will sufficiently mix with each other in the cavum. The invention is characterized by simple structure, compact size, good mixing of combustible gas and air, short flame, sufficient burning and good discharge, which is fairly suitable for small scale hot air engine.

Description

technical field [0001] The invention relates to a burner, in particular to a burner for a small heat engine using combustible gas as fuel. Background technique [0002] Gas burners are widely used in boilers, metallurgical and glass furnaces and external combustion engines. According to the mixing method of air and gas, they can be divided into diffusion burners, premixed burners and injection burners. The burner is between the diffusion burner and the premix burner. At present, the burners used in boilers generally use a combustion flame with a certain length to heat the boiler water pipes due to the large furnace volume of the boiler. However, this structure easily leads to large combustion high-temperature areas and high emissions. If emissions are to be controlled, it is necessary to To control the combustion space, it is necessary to speed up the combustion reaction, improve the mixing of air and gas, and shorten the length of the combustion flame. Flat flame burners ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a premixed swirling flow flat flame burner for a heat engine, which solves the problems of poor mixing of air and combustible gas, long flame length, large high temperature zone, insufficient combustion, and poor discharge in current burners. The technical problem that the structure of the combustion chamber is not compact enough

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