The quality of smoke exhaust and ventilation ducts is immediately determined by the characteristics of flue gas machines. Good flue gas machines can produce good smoke exhaust and ventilation ducts, and good smoke exhaust and ventilation ducts can have good prices. It is a very logical understanding. The smoke exhaust and ventilation duct is a thick walled prefabricated component made of mixed mortar using alkali resistant and high toughness glass fiber alkali resistant mesh cloth as the raw material. The concrete should be made of fast hardening sulfoaluminate cement or low acidity potassium thiocyanate concrete with a compressive strength grade of not less than 32.5, and coarse sand should be used. The mixture of concrete and sand should be 1, and the wall thickness of the smoke and dust duct should be evenly proportioned. Under the premise of reliable measures to ensure that there are no cracks in the smoke and dust duct during transportation and installation, it is not necessary to choose to increase the bending stiffness of the baffle.

濟南市排煙管道的應用能夠促使的自然通風，推動房間內的室內通風，操縱氣旋的速率減輕窒息感，什么叫做自然通風，也就是將房間內或是是密閉里的污穢的氣體排掉，在加工廠里將造成的有害物都歷經清潔解決以后都排出來戶外，隨后再將清新空氣送進房間內，稀釋液氣體的有害物，考慮大家針對氣體的要求。通風管道被運用于凈化車間的清潔、用以制藥業領域或是食品企業凈化車間的空調解決系統軟件、五金廠及其生產制造領域的清潔等；還能夠用于裝在空調中，例如大中型買東西場地、一些室內裝修奢華的辦公樓層、及其酒店餐廳等；在工業化生產中，能夠用于開展清理塵土、廚房油煙等的排風系統機器設備中，媒礦的煤礦的排風系統及其抽煤層氣的煤層氣系統軟件中。

The application of smoke exhaust pipes in Jinan City can promote excellent natural ventilation, promote indoor ventilation in the room, and control the speed of the cyclone to reduce suffocation. What is called natural ventilation? It means that the dirty gas in the room or in the enclosed area is discharged, and the harmful substances caused in the processing plant are cleaned and solved before being discharged outdoors. Then, fresh air is sent into the room to dilute the harmful substances in the liquid gas, Consider everyone's requirements for gases. Ventilation ducts are used for cleaning in purification workshops, for central air conditioning solution system software in pharmaceutical or food industry purification workshops, and for cleaning in hardware factories and their production and manufacturing fields; It can also be used for installation in central air conditioning, such as large and medium-sized shopping venues, some office floors with luxurious indoor decoration, and hotels and restaurants; In industrial production, it can be used in the exhaust system machinery and equipment for cleaning dust and kitchen oil fumes, as well as in the exhaust system of coal mines and the coalbed methane system software for extracting coalbed methane.

中高層房子的排煙管道。中高層房子的廚房全是同一個管路。所以說廚房里邊的油跡便會根據管路傳送到外邊，針對這些離主管近的樓房而言，家中廚房排煙實際效果就行一些。由于沒有其他危害，而針對這些離主通道遠的廚房，排煙便會差一些。矮層房子的排煙管道。這類種類的廚房，能夠挑選在兩墻中間的地區設計方案排煙口，徹底能夠成功排煙。高層住宅房子的排煙管道。高層住宅的廚房排煙管道規定會高一些，廚房排煙的高寬比好設計方案在2米四之上，而針對廚房排煙設計方案出入口而言，好是設計方案成環形孔狀的，并且直徑一般在170—200MM中間就可以了。那樣就可以保證 廚房的油跡成功并且又整潔的離去廚房。

Smoke exhaust ducts in mid to high-rise buildings. The kitchens of mid to high rise houses are all the same pipeline. So the oil stains inside the kitchen will be transmitted to the outside according to the pipeline. For these buildings close to the supervisor, the actual effect of smoke exhaust in the kitchen at home is better. Due to the absence of other hazards, for kitchens located far from the main passage, smoke exhaust may be worse. Smoke exhaust ducts in low rise houses. This type of kitchen can choose to design smoke exhaust outlets in the area between the two walls, which can completely successfully exhaust smoke. Smoke exhaust ducts in high-rise residential buildings. The kitchen smoke exhaust ducts in high-rise residential buildings are required to be higher, and the height to width ratio of the kitchen smoke exhaust is better designed to be above 2.4 meters. For the kitchen smoke exhaust design, it is better to have a circular hole shape at the entrance and exit, and the diameter is generally between 170-200mm. That way, it can ensure that the oil stains in the kitchen are successful and leave the kitchen neatly.