浴室排气风扇管位置
Hello GBA members-
我希望您在新的浴室风扇，内部管道，外部通风孔外壳和该位置上的建议。
我有一个屋顶和拱腹的屋顶。目前，一个旧风扇被排放到其中一个拱腹中，但我没有尽可能地发现任何霉菌问题。
我将用金属屋顶代替瓷砖屋顶，并以冷屋顶方式隔离阁楼地板空间。BR约为75 ft sq/8'天花板。
Any advice on a quality exhaust fan? I have a few links to products that seem to have good reviews.
https://www.deltabreez.com/gbr100h.php
或者
https://na.panasonic.com/us/home-and-building-solutions/ventilation-indoor-air-quality/ventilation-fans/whisperfitr-dc-fan-50-80-110-cfm
This company seems to have good products. I like the durable seal and have read that someone also uses butyl tape for extra seals around the screws:
https://www.deksus.com/dektite-metal-frad
从浴室到外部的管道有什么建议吗？光滑的铝（是否绝缘？）管道或绝缘柔性？
我可以水平/平行/平行/平行/在地板托梁之间运行管道，然后垂直通过屋顶垂直90度。这将大约。4.5'上升到甲板的内部。这种穿透率约为3'，距离臀部山脊约为3'，较低的屋顶/天沟边缘约为8-10'。
Would this vent location be better than venting through the soffit?
Thanks to all.
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答复
电信，
松下风扇很棒 - 最重要的是非常安静。使用刚性管，然后将其稍微倾斜到外部。只要它被阁楼地板上的绝缘材料充分覆盖，就不需要额外的保护。如果您购买将空气流远离房屋的拱腹端终止，则拱腹排气并不是问题。我更喜欢走那条路线，而不是屋顶穿透，这也需要在水分可以积聚的地方进行垂直的管道。
//m.etiketa4.com/article/bathroom-exhaust-fans
谢谢，马尔科姆。
我已经阅读了许多来自各种在线资源的论坛帖子，这些帖子引起了人们对温暖，潮湿的空气的关注，这些空气返回阁楼空间并促进霉菌的生长。
如果创建拱腹“盒子”的r频频道在屋檐面板中没有任何穿孔，并且只容纳排气口格栅，那么空气将如何返回到拱廊中？
此外，要创建一个从排气风扇到通风孔的坡度，我实际上必须制造一个高架排气风扇安装座，该安装座将排气口从托梁上方的风扇上放置。这将减少跑步中的弯曲次数。否则，跑步的中间将有2个锐利的90度弯曲。有什么想法吗？
谢谢你的时间-
电信，
In some climates - like our wet PNW one - even un-vented soffits can get moisture damage from exhaust air. But if the termination is close to the fascia and directed outwards, I've never had a problem.
The easiest way to gain a bit of height for slope is to curve the short piece of flexible duct attached to the fan box quite sharply upwards, then let the remaining rigid duct slope slightly for the rest of the run. If you do decide to go above the attic joists, you will want to insulate the ducts.
在查看YouTube上Corbett Lunsford的视频时（他运行家庭性能频道），他提到应将浴迷放在浴缸或淋浴上，而不是厕所或房间中间。这是因为风扇主要是要去除水分，而不是气味。
Bath Fans
https://www.youtube.com/watch?v=yai9rj31wqu
渠道
https://www.youtube.com/c/homeperformance
>这是因为风扇主要是为了去除水分，而不是气味。
虽然确实如此，但直接在淋浴区的浴风扇运转良好，可能会在淋浴期间引起不舒服的吃水。
A bath fan is not like a kitchen hood; it's not meant to capture effluent and eject it before it can spread. A correctly sized bath fan can be anywhere in the space and likely accomplish the goal, particularly if it's run post-shower.
Where abouts do you live? Do you regularly get snow on the roof?
I dealt with both situations recently. Two fans. Both were venting into attics.
For one fan, I tore it out and replaced it with a Panasonic version. I ran 6" smooth ducting and terminated it through the shingle roof. I took great care to heavily insulate the duct. You want to be sure that the warm shower air does not condense in the duct and then drip back towards the fan. One advantage of going through the roof is there were a number of good options for vents and no risk of the moist air getting sucked back up into the soffit. It was also easier for me to avoid having to run ducting to the very edge of the attic given some tight spaces. The disadvantage is that you are messing with your roof. Very happy with the fan. I can't remember if I got the 110 cfm or 150 cfm version but it's very powerful.
请注意，在用户手册中，他们可能会在肘部前建议2-3英尺的直线导管。不确定这有多少重要。（见图18）https://ftp.panasonic.com/ventilationfan/installation/fv-0811rq1_fv-1315rq1_en_in_install.pdf
还要考虑GFCI如果将其直接放在淋浴上 - 一如既往地检查手册和本地代码。
For the other fan, there was already ducting to the edge of the attic space and the duct was just sitting above the perforated soffit. It was easiest for me to just cut a hole in the soffit from the outside and then pull the flexible duct out and attach a vent like the one that Malcolm showed. In this case, the insulation is not a concern if the duct is embedded in the attic insulation anyway. This worked out quite well and it's quite close to the edge of the soffit so I'm not too worried about moisture getting sucked up. Even if some gets sucked back, it's a massive improvement to the before-state. My only real gripe is that the options for vents were much more limited. I don't think I saw any for 6" ducting and the ones I did see for 4" ducting were a little hokey. I would have happily paid $50 for a quality piece of hardware. I ended up adding some metal mesh to reduce the chances of birds or bats entering the duct work.
谢谢Malcom，Canada_deck，Patrick和Scott-
当淋浴间的天花板铺有瓷砖时，我的排气风扇将留在浴室的中央，并带有一个小开口。
昨晚我在网络研究中遇到了这个拱腹通风口：
https://moistureflow.com/
对这个通风口有任何熟悉吗？
Somewhat novel, although somewhat unsightly design. I could run the duct to the south end of the house where this vent would not be as noticeable. Unfortunately, my BR faces the front/street side and I don't know if I'd like that vent in the front of the house. Running the duct to either the east or south end wouldn't be more than about 11-12 feet. I would go with a higher output fan with a timer on a switch to have it run for 30 min.
昨晚我又在阁楼上又站起来，目前的通风孔无法看到任何霉菌的生长（排气管只是终止于拱柱，后者已经穿孔了“奶酪奶酪”拱腹式通风板。）
malcom-感谢您的管道图形 - 将为您建模。
Canada_Deck-I appreciate the link in your post.
I will keep you updated on the project.
电信，
That would work fine, although I'd have no reservations using the one I linked to. We have two on our house. On damp days I can clearly see the airflow from the termination, and it all goes out well past the soffit and dissipates.
看起来确实是一个不错的设计。将空气推到拱腹边缘，内置屏幕应防止蝙蝠和鸟类的问题。如果您要插入新的管道，我鼓励您使用6英寸平滑的管道并用隔热材料覆盖它，以免在管道中凝结。在不看到内部的情况下，很难判断，但可能会出现机制的潜在问题在某些天气下冻结 - 我想这是许多通风口的风险，总是可以解冻。
在我登上风扇之前的最后考虑：
我的托梁垂直于所需的排气点。安装风扇需要在托梁上弯曲，另一个垂直于终止的弯曲。总而言之，从上方的风扇上面有4个弯曲的垂直线，一个垂直于将长管延伸到拱腹的垂直线，从直线直流到通风端终止的长管（约135度）。
我可以建立一个盒子，将风扇安装在托梁上的上方，从本质上消除了前两个弯道，从而直接向拱腹。这样做有任何有意义的好处吗？我应该只运行它并安装更大的容量风扇（80-110与110-130-150）？
I think I'd get some rectangular ducting and use 2x stock to create the box extension and spray great stuff around the interfaces.
再次感谢您的所有帮助。