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<title>烟道装修问题解析 - L型构件装配式排气道，拔气风帽，防火排气阀——万居科技</title>
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<h1 class='title'>烟道装修问题解析</h1>
<div class='newsInfoWrap'><div class='leftInfo'><span class='newsInfo'>发表时间：2025-10-23 18:01</span></div></div>
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<div class="jz_fix_ue_img"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><div><p>现代住宅的通风烟道基本上都是公用的，每个单元统一安装烟道，住户将厨房油烟排入烟道，再从烟道排到户外。然而，装修时由于施工人员对厨房烟道处理的疏忽，往往会造成烟道油烟倒灌，烟管出现了问题。<img title="图片2" align="center" src="//24734732.s21i.faiusr.com/4/ABUIABAEGAAg7vnnxwYox_iT7AcwlAM46gQ.png" width="600px" alt=" " /></p>一、烟管又称排气管，就是安装在住宅墙壁里的四方形竖式孔道，烟道内壁不光滑，就会增大油烟上升过程中的摩擦阻力，油烟通过排气道向上走的时候遇到阻力就会慢下来，致使许多油烟都堵在一起，从而造成油烟倒灌，此时把位于屋顶的烟管排烟口打开，检查下有没有堵牢。 二、烟为什么长时间排不出去，在油烟机的机械推动下，油烟通过连接软管进入竖向烟道，沿着烟道上升，最后在楼顶的出气口排出。油烟在烟道内往上走的时候，遇到阻力就慢下来，使得烟道内气压大于外部，从而阻挡了油烟机向外排烟，烟道内压力过大，别家的油烟就通过压力被“压”回了自家的厨房。这个主要原因有几个：一个是城市化进程造成中国高层化住房越来越多。每当烹饪高峰时段，楼上楼下各家各户同时启动烟机，集中排烟造成公共烟道拥堵不堪。其次如果排烟管较长或接到公共烟道中，则排烟压力损失很大，这样就需要更大的风压，才能保证将油烟及空气全部排出。再有就是一些施工人员虽然发现烟道周围出现裂纹，却没有经过处理就直接在其表面贴砖，结果造成烟道的油烟从缝隙里钻出来散发到厨房内。当然很多家庭都是因为油烟机上的止回阀片受到油垢粘连，导致止回阀开、关均不到位，后果是排风不畅、风量衰减，导致发生大量的油烟倒灌。<img title="图片3" align="center" src="//24734732.s21i.faiusr.com/4/ABUIABAEGAAg7vnnxwYoxIyIlAQwiQM4gwI.png" width="600px" alt=" " /><br />所谓倒灌，就是楼上烟机排烟压力和风量较大时会在烟道内产生风阻作用，使楼下烟道局部压力增高，阻断了楼下住户的正常排烟。局部压力增高后烟道中的污气会从密封效果不好的邻居家止逆阀处泄漏到房间。再就是在烟机使用过程中累积在止逆阀上的油垢使阀片重量增加、阀片上加装弹簧后止逆阀开启阻力增加、吸油烟机要消耗部分风量来克服这些阻力，特别是安装在共用烟道口的下垂式止逆阀不能开启到最大位置，减小了通风截面，这些都要引起排风量衰减，排烟不畅。虽然引起油烟倒灌的原因很多，但是解决的办法其实也很简单，只要在油烟机出风口安装一台关的严密、开的到位、不会被烟机风力吹开、也不会被烟道负压吸开的油烟密闭阀就可以消除油烟倒灌和排烟不畅。<br /><br /></div></div></div>
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