Unverified85% confidenceDecision RuleTime unknown
风压比风量更能反映高楼层排烟能力，20层以上或公共烟道楼房建议风压≥400Pa，否则易被邻居烟气倒灌
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85%
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Long-term
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Unverified多户共用公共烟道时不宜选换气量过大机型，超出烟道设计排量会导致互相倒灌串味，此类楼栋应选带止逆阀的中等风量机型（150 m³/h左右）而非盲目追求大风量78% similarUnverified集成灶排烟核心看风量与风压：风量建议≥20m³/min，风压建议≥300Pa（高层住宅公共烟道倒灌风险高，风压更关键）；风量虚标严重，优先看有无风机品牌标识及静压曲线，仅标风量不标风压的慎选78% similarUnverified净化器额定风量必须≥所连接油烟机/风机的最大风量，否则形成排烟瓶颈导致倒烟；一般净化器风量应比风机风量大10-20%留余量74% similarUnverified高层住宅或使用共用烟道的户型必须选带防回流阀(止逆阀)的换气扇，否则邻居异味、油烟会倒灌，且冬季冷风回流严重72% similarUnverified带止逆阀（防倒灌）的换气扇能防止公共烟道异味和邻居废气倒灌，高层住宅和公共排风管道楼栋必选，否则关机时会串味69% similar
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