Unverified82% confidenceTradeoffTime unknown
止逆阀风叶片存在阻力，会降低约5-15%排烟效率，若楼层高、串味严重则装外置独立止逆阀于烟道入口，避免油烟机自带止逆阀+管道止逆阀双重叠加
1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen
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Unverified不要为省事在燃气灶排烟或热水器烟道中混用不同管径的转换接头而不做密封，管径突变处风阻骤增，是排烟效率下降和回烟的常见隐患86% similarUnverified公共烟道内不建议将排烟管插入过深或封死整个烟道口，会阻碍其他住户排烟并造成整栋负压异常；正确做法是管口伸入烟道后配止逆阀，四周用防火密封76% similarUnverified四壁密闭无通风孔的篝火架燃烧不充分、易积炭冒烟，选择侧壁和底部带进气孔洞的二次燃烧结构可显著减少烟雾并提升燃烧效率75% similarUnverified选择油脂拦截率≥95%的多层网结构（3层以上密织铝网）可显著减少油烟进入内部电机和风道，延长油烟机寿命75% similarUnverified侧吸式（近吸式）吸烟口贴近灶台，能在油烟扩散前拦截，适合身高偏矮或经常爆炒的人；顶吸式排烟通道更顺畅、大风量优势明显，但需注意不碰头，适合厨房层高充足者74% similar
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