燃烧器头部分流结构参数对热水器低氮性能的影响  

The Impact of Divergent Structure Parameters in Burner Head on the Low Nitrogen Performance of Water Heaters

作　　者：李新学 

机构地区：[1]广东万和新电气股份有限公司,佛山528325

出　　处：《日用电器》2024年第9期133-137,163,共6页ELECTRICAL APPLIANCES

摘　　要：本文介绍了燃烧器头部分流预混结构设计的理论分析与实验认证,基于头部结构预混微流道,实现空气的分流预混,增加侧火焰的空气系数,降低侧火焰的燃烧温度,同时通过侧火焰稳住了主火焰的燃烧,两者相互作用下不易出现离焰现象,有利于降低整个燃烧器的有害气体的排放量。由于侧火焰燃烧产物中还含有空气中的其他成分。这些气体同过剩的空气一起扩散到主火焰中,使得主火焰反应区的氧气浓度相对降低以及主火焰燃烧温度的降低,最终抑制了浓火焰氮氧化物的生成。这样,最终使得整个燃烧器的氮氧化物的排放量较低。This article introduces the theoretical analysis and experimental verification of the divergent premix structure design in the burner head,which achieves pre-mixing of air through micro-channels in the head structure,increases the air factor of side flames,reduces the combustion temperature of side flames,and stabilizes the combustion of the main flame with side flames.This mutual effect prevents flame lifting and is conducive to reducing the emission of harmful gases from the entire burner.Since the combustion products of side flames still contain other components of the air,these gases,along with excess air,diffuse into the main flame,leading to a relatively lower oxygen concentration in the reaction zone of the main flame and a decrease in its combustion temperature.Ultimately,this suppresses the formation of nitrogen oxides in rich flames,resulting in a lower overall nitrogen oxide emission from the burner.

关 键 词：主火焰 侧火焰 低氮 分流通道 燃烧温度 燃烧头部 

分 类 号：TS914.252[轻工技术与工程]