Unverified88% confidenceDecision RuleTime unknown
公共烟道必须安装带弹簧或翻板的止逆阀（防回流阀），推荐止逆片开启压力低、闭合严密的翻板式；无止逆阀会导致邻居油烟倒灌，尤其高层公共烟道负压大时
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
Related Entities
Related Claims
Unverified止逆阀分弹簧式和重力翻板式，公共烟道（多户共用）必须装弹簧双向止逆阀防串味串烟；独立烟道装简单翻板阀即可88% similarUnverified止逆阀密封性越好（弹簧越紧）越能防倒灌，但同时增加排烟背压、降低烟机实际排风量；小风量烟机（≤17m³/min）搭配过紧止逆阀会明显影响吸烟效果77% similarUnverified厨房油烟机止逆阀优先选双层活动翻板结构，静止时两片弹簧翻板互相压合密封，比单层挡板止逆效果好，能有效防止邻居返烟窜味75% similarUnverified已装嵌入式或近吸式油烟机大多自带止逆阀，不要再串联加装外置止逆阀，双重阀门会叠加阻力严重削弱排烟能力75% similarUnverified止逆阀密封性越好越防串味，但弹簧阻力也会略微降低排烟顺畅度；油烟机风压足够时优先密封，风压小的旧机型可选低阻力翻板阀73% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/370911API
curl https://kongchang.com/api/v1/knowledge/claims/370911MCP
get_claim(id=370911)