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1. Different structures: the ventilation pipe is an exhaust system formed by connecting pipes as a whole, which only needs a purification equipment and fan; Smoke exhaust fire damper shall be installed in the smoke exhaust pipe, the air outlet is the smoke exhaust outlet, and there is fire sprinkler equipment next to the pipe.

2、作用不同：通風管道是可促進空氣流通，使有害氣體含量減少的市政基礎設備；排風管道是預防生產時產生有害物質污染空氣的設備。

2. Different functions: ventilation ducts are municipal infrastructure equipment that can promote air circulation and reduce the content of harmful gases; Exhaust duct is a device to prevent harmful substances from polluting the air during production.

3、用途不同：通風管道主要應用在工業及建筑工程中；排煙管通應用在工業、建筑、城市建設上。

3. Different uses: ventilation ducts are mainly used in industrial and construction projects; Smoke exhaust pipes are used in industry, architecture and urban construction.

廚房排煙管道制作安裝

Fabrication and installation of kitchen smoke exhaust pipe

1、首先，選擇廚房排煙管的安裝位置；

1. First, choose the installation position of the kitchen smoke exhaust pipe;

2、其次，找好標高，用電鉆打墻洞，配合預留的支架孔洞埋設吊托支架；

2. Secondly, the elevation shall be found, the wall hole shall be drilled with an electric drill, and the hanging bracket shall be buried with the reserved support hole;

3、將組裝好的風管找平、找正，再用緊固螺栓固定。

3. Level and align the assembled air duct, and then fix it with fastening bolts.

4、如果是通風排煙管道的安裝，通風管道和排煙管道應該分開，兩者的通風方向和地點是不同的，流通的空氣質量前者優于后者，所以不能使用同一個管道。

4. If it is the installation of ventilation and smoke exhaust pipes, the ventilation pipes and smoke exhaust pipes should be separated. The ventilation direction and location of the two are different. The former is better than the latter in circulating air quality, so the same pipe cannot be used.

廚房排煙通風管道安裝方式

Installation method of smoke exhaust and ventilation duct in kitchen

廚房排煙通風管道有三種式樣，需要根據不同的類型進行針對性安裝。

There are three types of smoke exhaust and ventilation ducts in the kitchen, which need to be installed according to different types.

1、單煙道式：這是一種矩形煙管，只要將矩形煙管筆直的穿過每層住所，然后在居室中預留一個銜接抽油煙機的進風口就可以；

1. Single flue type: This is a rectangular smoke pipe. As long as the rectangular smoke pipe is straight through each floor of the residence, and then an air inlet connecting the range hood is reserved in the room;

2、變壓式：安裝時，把每層的煙道做成不同的截面方式，然后煙氣在排放時會將氣流向上排出；

2. Variable pressure type: when installing, make the flue on each floor into different cross-section ways, and then the flue gas will discharge the air upward when discharging;

3、止逆閥式：它是在單管煙道上的每層進風口處，配置一個油煙機接口和止逆閥，能防止氣流逆行。

3. Check valve type: it is equipped with a range hood interface and check valve at the air inlet of each floor on the single pipe flue, which can prevent the reverse flow of air.

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