Unverified80% confidenceDecision RuleTime unknown
双向（送排一体）换气扇适合密闭无对流的房间实现新风循环，单向排风扇仅排不补需门窗有进气缝隙，完全密封房间用单向扇会因负压导致排风量骤降
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80%
Confidence
Long-term
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Unverified双向换气扇(送风+排风)适合完全封闭无窗厨房或需补充新风的场景，单向排风扇适合有窗或有进气口的厨房；双向机功耗和价格更高，普通有窗厨房单向即可86% similarUnverified为单向排风设计（向外排气），若需要双向或进气功能需另行配置进气通风口形成气路79% similarUnverified带热回收的双向流新风优于单向流(仅送风或仅排风)：双向流能主动排出室内污浊空气并回收温度，室内不会形成负压导致灰尘从门缝渗入78% similarUnverified双人床必须选左右完全独立双气路（各自独立气泵或双气路系统），共用单气泵的伪独立调节在一侧调整时会影响另一侧气压，起夜或翻身会传导震动76% similarUnverified充气嘴选择双向气阀（自封防回气）比普通单向气阀更方便，放气时按压即可快速泄气，普通气阀需捏住持续排气75% similar
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