To solve this problem, we also need to start with the analysis of smoke exhaust pipes. In China's residential areas, there are generally two types of flues, the main flue runs through the whole building and has been designed by developers for a long time; The secondary flue is relatively independent and "hidden" on the ceiling or wall of the kitchen according to the different kitchen design of each household. In theory, the lampblack in the ordinary household will first go to the secondary flue, and then enter the main flue through the hole on the partition, which can ensure that the lampblack in each household is isolated.

但是裝修時不合理的布局使副煙道拉的過長、使煙道內部環境曲折復雜，屬于不合理的煙道設計，從一開始裝修規劃的時候就該避免。針對這一問題，用戶可以在排煙管道中加裝一個鼓風機，以加強排煙的力度，不過鼓風機與油煙機無法做到同時啟動，需要手動進行開關。而面對公共煙道的油煙倒灌現象，解決方案就是在自家煙機的煙道口裝一個止回閥，可使防止倒煙的效果更好。煙機工作時會打開，不工作時會自動會關閉，這樣一來公共煙道里的油煙就不會進到自家的廚房。但在家庭裝修中，不少家庭可能忽視了煙道出風口的位置和設計的失誤導致了煙道過長，它們在家中左拐右出，重要的是排煙受阻，油煙倒灌等現象，當然出問題的可能性也大大增加，給生活帶來更多的不便。

However, the unreasonable layout during decoration makes the auxiliary flue too long and the internal environment of the flue tortuous and complicated. It is an unreasonable flue design, which should be avoided from the beginning of decoration planning. To solve this problem, the user can install a blower in the smoke exhaust pipe to strengthen the smoke exhaust. However, the blower and the range hood cannot be started at the same time and need to be switched on and off manually. The solution is to install a check valve at the outlet of the flue of your cigarette machine to prevent the backflow of oil smoke in the public flue. The smoke machine will open when it is working, and will automatically close when it is not working, so that the lampblack in the public flue will not enter the kitchen. However, in the family decoration, many families may have neglected the position and design error of the flue outlet, resulting in the flue being too long. They turn left and right at home. The important thing is that the smoke exhaust is blocked and the lampblack pours back. Of course, the possibility of problems is also greatly increased, bringing more inconvenience to life.

在初的設計中用戶設計導致廚房煙道過長的主要原因是采用了開放式廚房的設計，因此在裝修時為了精致美觀起見，讓室內設計師將灶臺設計到了原客廳靠墻的一面。這樣就會導致煙道有很多拐角、折彎，長期使用當然會積聚很多油煙殘留物，排煙自然就有問題了，那么遇到這種情況應該怎們辦呢？

In the initial design, the main reason why the kitchen flue is too long due to the user design is that the design of the open kitchen is adopted. Therefore, in order to be exquisite and beautiful during the decoration, the interior designer has designed the kitchen to the wall side of the original living room. This will lead to many corners and bends in the flue. Of course, there will be a lot of oil smoke residues accumulated after long-term use, so there will be a problem in smoke exhaust. What should we do in this case?

要解決這一問題，我們還需要先從排煙管道入手分析。在我國的居民小區中，煙道一般有主副之分，主煙道貫穿整個樓體，是由開發商早就設計好的；副煙道是相對獨立的，根據每家戶廚房設計的不同而“潛藏”在廚房天花板上或墻壁內。理論上來說，普通戶型的家里的油煙會先到副煙道里，然后再通過隔板上的孔進入主煙道，這樣可保證每戶的油煙是隔離開來的。

To solve this problem, we also need to start with the analysis of smoke exhaust pipes. In China's residential areas, there are generally two types of flues, the main flue runs through the whole building and has been designed by developers for a long time; The secondary flue is relatively independent and "hidden" on the ceiling or wall of the kitchen according to the different kitchen design of each household. In theory, the lampblack in the ordinary household will first go to the secondary flue, and then enter the main flue through the hole on the partition, which can ensure that the lampblack in each household is isolated.

但是裝修時不合理的布局使副煙道拉的過長、使煙道內部環境曲折復雜，屬于不合理的煙道設計，從一開始裝修規劃的時候就該避免。針對這一問題，用戶可以在排煙管道中加裝一個鼓風機，以加強排煙的力度，不過鼓風機與油煙機無法做到同時啟動，需要手動進行開關。而面對公共煙道的油煙倒灌現象，解決方案就是在自家煙機的煙道口裝一個止回閥，可使防止倒煙的效果更好。煙機工作時會打開，不工作時會自動會關閉，這樣一來公共煙道里的油煙就不會進到自家的廚房。但要注意定期更換止逆閥門，一般兩年左右就需更換一次，并做好定期清洗，否則會使止逆閥失去效果。

However, the unreasonable layout during decoration makes the auxiliary flue too long and the internal environment of the flue tortuous and complicated. It is an unreasonable flue design, which should be avoided from the beginning of decoration planning. To solve this problem, the user can install a blower in the smoke exhaust pipe to strengthen the smoke exhaust. However, the blower and the range hood cannot be started at the same time and need to be switched on and off manually. The solution is to install a check valve at the outlet of the flue of your cigarette machine to prevent the backflow of oil smoke in the public flue. The smoke machine will open when it is working, and will automatically close when it is not working, so that the lampblack in the public flue will not enter the kitchen. However, pay attention to the regular replacement of the check valve. Generally, it needs to be replaced once every two years, and regular cleaning should be done, otherwise the check valve will lose its effect.

當然還有其他的一些措施，例如購買功率更大、吸力更大、無死角的油煙機可以很好的解決這一問題，但是也增加了油煙機的負擔，造成一定程度的浪費。好了，煙道很長不要緊，為了你設計的美觀做一些犧牲也是應該的，現在你該知道怎么做了吧。

Of course, there are other measures, such as purchasing a range hood with higher power, greater suction and no dead angle, which can solve this problem well, but also increases the burden of the range hood and causes a certain degree of waste. Well, it doesn't matter that the flue is long. It's also right to make some sacrifices for the beauty of your design. Now you should know how to do it.