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Induced-draft low swirl burner for low NOx emissions
Induced-draft low swirl burner for low NOx emissions
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机译：诱导式低涡流燃烧器，降低NOx排放
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摘要
A burner for use with an induced draft furnace and which satisfies reduced nitrous oxide (NOx) emission standards is disclosed. The burner may employ a mechanical swirler that introduces a rotational vector to the emitted air and fuel mixed by the burner. By introducing the rotational vector, the resulting flame is more stable and sustainable even with the relatively low air flow afforded by an induced system. Such flame stability can be enhanced by positioning the burner directly within an inlet to a heat exchanger and manufacturing the inlet with reception surfaces that form a frusto-conically shaped flame expansion zone. In doing so, a secondary source of air is avoided and NOx emissions are reduced.
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机译：公开了一种与引风机一起使用的燃烧器，其满足降低的一氧化二氮（NO x ）排放标准。燃烧器可以采用机械旋流器，该机械旋流器将旋转矢量引入排放的空气和由燃烧器混合的燃料。通过引入旋转矢量，即使在诱导系统提供的空气流量相对较低的情况下，所产生的火焰也更加稳定和可持续。这样的火焰稳定性可以通过将燃烧器直接放置在热交换器的入口内并制造具有形成截头圆锥形火焰膨胀区的接收表面的入口来增强。这样做避免了辅助空气源，并减少了NO x 排放。
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