1、 The installation method of smoke exhaust pipes should be correct. The owner is concerned about the odor in the flue at home and does not know the reason. Sometimes this is due to errors left during the construction process. So what issues should owners pay attention to during the construction process?

1.需要保留輔助煙道  每個廚房都有一個煙道，同時煙道又分為主煙道和輔助煙道。主煙道貫穿整個建筑，輔助煙道相對獨立。一般家里的油煙會進入輔助煙道，再通過隔板上的孔進入主煙道，可以保證每戶的油煙都被隔離。但如果輔助煙道直接與主煙道相連，則會因壓力低而出現倒煙或串煙現象。

1. It is necessary to retain auxiliary flue. Each kitchen has a flue, and the flue is divided into main flue and auxiliary flue. The main flue runs through the entire building, while the auxiliary flue is relatively independent. Generally, the cooking fumes in a household enter the auxiliary flue and then enter the main flue through the holes on the partition, ensuring that each household's cooking fume is isolated. However, if the auxiliary flue is directly connected to the main flue, there may be smoke inversion or string due to low pressure.

2.注意施工細節  ，油煙機的安裝位置選擇非常重要。管子越短越好。為了美觀，有些業主會把水管拉得更長。這樣一來，關掉油煙機后，會有大量的油煙堆積在管道里，無法排出，然后倒回室內。另外，為了不損壞原有的主輔煙道，不能隨意改變開啟方向，需要在輔煙道內打。

 

2. Pay attention to the construction details. Firstly, the selection of the installation position for the range hood is very important. The shorter the pipe, the better. For the sake of aesthetics, some homeowners may pull the water pipes longer. In this way, after turning off the range hood, a large amount of oil fumes will accumulate in the pipeline, which cannot be discharged and then return to the room. In addition, in order not to damage the original main and auxiliary flue, the opening direction cannot be changed arbitrarily, and it is necessary to open it inside the auxiliary flue.

3.從窗戶排煙時要注意平安

3. Pay attention to safety when smoking from windows

為了避免煙霧問題，一些業主放棄了原有的濟南廚房排煙管，直接在窗戶上開孔排煙。這個可以，但是有幾點需要注意。

In order to avoid smoke issues, some homeowners have abandoned the original Jinan kitchen smoke exhaust pipes and directly opened holes in the windows for smoke exhaust. This is fine, but there are a few points to note.

，在開窗或開墻前需要征得物業的同意;其次，注意問題。一般排煙管的末端是金屬的。如果孔太小，金屬傳熱可能導致玻璃破裂，傷害行人。而且煙管引出窗外，強勁的北風迎面吹來，會導致油煙回流。盡量把管子加長再嵌套下去，以免下雨時雨水流入管子，擋風玻璃留在外面。

Firstly, it is necessary to obtain the consent of the property before opening windows or walls; Secondly, pay attention to the issue. The end of a typical smoke exhaust pipe is made of metal. If the hole is too small, metal heat transfer may cause glass breakage and harm pedestrians. Moreover, the smoke pipe leads out of the window, and a strong north wind blows head-on, which can cause oil fumes to flow back. Try to lengthen and nest the pipes as much as possible to prevent rainwater from flowing into the pipes and leaving the windshield outside when it rains.

4.經常更換止回閥門  如果輔助煙道已拆除，或防排煙效果較好，則使用煙道止回閥。一般情況下，油煙機的逆止閥作用不明顯，但在煙道內安裝逆止閥可以保護油煙機，使煙道內的煙氣不會倒流到管道和油煙機內。但止回閥安裝后要定期清洗，否則止回閥會打開失效，煙道止回閥每兩年左右更換一次。

4. Regularly replace the check valve. If the auxiliary flue has been removed or the smoke control effect is good, use the flue check valve. In general, the check valve of the range hood is not effective, but installing a check valve in the flue can protect the range hood from backflow of smoke into the pipeline and range hood. But the check valve should be cleaned regularly after installation, otherwise it will open and fail. The flue check valve should be replaced every two years or so.