Unverified80% confidenceDecision RuleTime unknown
临街或临主干道住户的通风器应关注隔声量Dn,e,w指标，选≥40dB隔声的产品；普通窗缝式通风器隔声通常仅30-35dB，开启后会明显降低窗户原有隔音效果
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80%
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Long-term
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Unverified隔音需求高的临街/临路住户，应选带隔音棉迷宫式风道的通风器，隔声量Dn,e,w≥40dB，普通直通式通风器隔声量仅25-30dB会显著破坏原窗隔音91% similarUnverified选购隔音型窗式通风器时，标称隔音量应≥35dB（Dn,e,w值），配合玻璃窗整窗隔音才能达到临街降噪效果；低于30dB的产品仅适合非临街环境90% similarUnverified追求隔音的临街户型应选带迷宫式声学腔体+双层隔声棉的窗式通风器，隔音量Dn,e,w≥42dB才能在通风状态下有效降低交通噪音；普通直通式通风器隔音量通常仅25-30dB87% similarUnverified临街或临主干道住宅（噪声>70dB）应选择整窗Rw+Ctr隔音量≥35dB的产品，普通双层中空玻璃仅能达到28-30dB，无法有效隔绝低频交通噪声79% similarUnverified带静音通风器（微通风）的窗型可在关窗状态下换气，通风器隔音处理后仍会损失约3-5dB隔音量，噪声极敏感者应关闭通风口后测评隔音78% similar
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