Microscale flameless combustor

Abstract

The invention belongs to the field of microscale combustion equipment and discloses a microscale flameless combustor. A flue gas pipeline is arranged on a combustor outer shell and used for discharging flue gas; an interlayer space is an area between the combustor outer shell and a combustor inner shell; the combustor inner shell is used for forming a combustion space, the front end of the combustor inner shell is provided with a preset number of dilution holes and accelerating bodies, and the rear end of the combustor inner shell is provided with a flue gas outlet which is used for sending the flue gas generated by combustion into the interlayer space; a bluff body is arranged in the combustion space; and when the bluff body is in the preheating stage, the bluff body is attached to an igniter, and after the bluff body is heated to the self-ignition temperature of fuel, the bluff body is attached to the combustor inner shell so as to enter the flameless combustion stage. According to the microscale flameless combustor, flameless combustion can be realized, so that the fuel is stably oxidized in a medium-temperature and low-oxygen atmosphere, the generation amount of nitrogen oxidesis greatly reduced, and the heat dissipation problem caused by large contact area of the combustor is avoided, meanwhile, the fuel and oxidant are preheated by using the flue gas, and the combustionefficiency of the combustor is improved.

Description

technical field [0001] The invention belongs to the field of micro-scale combustion equipment, and more specifically relates to a micro-scale flameless burner. Background technique [0002] With the continuous development of the processing and manufacturing industry, various micro-devices such as micro-drones, micro-robots, etc. are continuously applied in all aspects of production and life. Due to the various disadvantages of traditional batteries, combustion-based micro-power equipment has great applications space. At present, micro-scale combustion has been paid attention to and researched by scholars at home and abroad, and some progress has been made. However, there are still many problems in micro-scale combustion equipment that limit its application in industrial production, such as serious heat dissipation due to large specific surface area, strong wall reaction resulting in unstable combustion and easy flameout, and short residence time of fuel resulting in insuffi...

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a micro-scale flameless burner, which combines the characteristics of the micro-scale burner itself and the characteristics of flameless combustion, and its key components such as blunt body, dilution The structure of holes and accelerators and their specific setting methods are studied and designed, which can effectively solve the problem of pollutant emission from micro-scale burners. At the same time, they also have good thermal insulation performance, so they are especially suitable for efficient cleaning of micro-combustion equipment. Applications

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