Unverified85% confidenceDecision RuleTime unknown
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
1
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85%
Confidence
Long-term
Relevance
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Unverified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25-30dB88% similarUnverified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87% similarUnverified窗户是隔音最薄弱环节，普通单层玻璃隔声量仅约25dB。临街噪音大应优先换中空/夹胶双层玻璃（可达35-40dB），装再多墙面隔音棉都不如换窗有效86% 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86% similar
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