Ventilation duct is very important in urban architecture, especially the quality of its installation affects the air exchange, affects people's normal "activities" and affects people's work efficiency.

1、做好施工前的准备工作

1. Make preparations before construction

俗话说“磨刀不误砍柴工”，充分的准备工作是确保风管装置质量的前提。在准备净化风管的制造时，无论是采纳工厂集中制造还是现场制造办法，都有必要确保场地的洁净和封闭，并具有契合条件的采光和照明条件。除此外，还要对制造好的方管进行看管，尽量防止污染。

As the saying goes, "sharpening a knife does not mistake a woodcutter". Sufficient preparation is the premise to ensure the quality of the air duct device. When preparing for the manufacturing of purification air duct, it is necessary to ensure that the site is clean and closed, and has suitable lighting and lighting conditions, no matter whether centralized manufacturing in the factory or on-site manufacturing method is adopted. In addition, it is necessary to take care of the manufactured square tube to prevent pollution as much as possible.

2、排烟管道风管原料的挑选

2. Selection of raw materials for exhaust duct

风管原料的挑选，对风管的施工质量也有很大的影响。一般来说为了确保风管的重量，需采用zui小板厚的风管，但除此外还需要归纳考虑风管的尺度和压力级别。从设计角度来看，值得注意的是一个系统能够一起存在几种对应于不同静压级别的风管板厚。

The selection of air duct materials also has a great impact on the construction quality of air duct. Generally speaking, in order to ensure the weight of the air duct, it is necessary to use Zui small plate thick air duct, but in addition to summing up and considering the size and pressure level of the air duct. From a design point of view, it is worth noting that a system can have several duct plate thicknesses corresponding to different static pressure levels together.

3、风管的横向衔接

3. Horizontal connection of air duct

风管的横向衔接有必定考究，这种衔接办法能够说是是延续风管长度的一种手段，还具有增强刚度及坚持风管jing确地横向尺度的作用。一般横向衔接的办法是角钢法兰衔接，这种衔接办法取决于壁厚，更取决于衔接种类及板壁加固办法。

The horizontal connection of the air duct must be studied. This connection method can be said to be a means to continue the length of the air duct. It also has the function of strengthening the rigidity and insisting on the correct horizontal dimension of the air duct. Generally, the method of horizontal connection is angle steel flange connection, which depends on the wall thickness, more on the type of connection and the method of plate wall reinforcement.

4、风管的纵向缝接合

4. Longitudinal seam joint of air duct

风管的纵向缝接合办法能够根据实际情况，挑选对应的办法。在中、低压风管中常常运用扣式咬口衔接，关于矩形风管，联合咬口运用无任何压力级别，因而运用扣式咬口能够节约一道翻边工序，现在大多数的风管纵向缝接合都采用了扣式咬口。关于立缝和封盖式立缝能够运用铆钉、自攻螺丝、点焊、压凸凹痕等办法紧固。

The longitudinal joint method of air duct can select the corresponding method according to the actual situation. In the middle and low pressure air ducts, the buckle type bite is often used for connection. As for the rectangular air ducts, the joint bite is used without any pressure level, so the use of buckle type bite can save a flanging process. Now, most of the longitudinal seam joints of air ducts adopt buckle type bite. For vertical seam and cover type vertical seam, rivets, self tapping screws, spot welding, embossing dent and other methods can be used for fastening.

厨房排烟的长处就是可以运用厨房排烟的烟道设置合理，帮忙我们在煮饭时分有烟雾出现，可以跟着烟道管走掉，从而对我们的身体不会构成太大的伤害，并且这个厨房烟道在平房规划中还能起到有助烧火炒菜旺的长处。

The advantage of kitchen smoke exhaust is that the flue of kitchen smoke exhaust can be set reasonably, which can help us to have smoke when cooking, and can follow the flue pipe to go away, so as to not cause too much harm to our body, and the kitchen flue can also play a strong role in the bungalow planning to help fire and stir up vegetables.

烟道管有两个设置，我们不能少一个过程，主烟道贯穿整个楼体，而副烟道是相对独立的。一般家里的油烟会先到副烟道里，然后再通过隔板上的孔进入主烟道，这样可保证每户的油烟是隔离开来的。而假设将副烟道直接连接主烟道，就会由于压力过低而导致倒烟或串烟现象。

There are two sets of flue pipes. We can't do without one process. The main flue runs through the whole building, while the auxiliary flue is relatively independent. In general, the lampblack in the house will first enter the auxiliary flue, and then enter the main flue through the hole on the partition board, so as to ensure that the lampblack in each house is isolated. If the secondary flue is directly connected to the main flue, it will cause the phenomenon of inverted smoke or cross smoke due to the low pressure.