現如今，無論是廠房車間、辦公大樓還是其他建筑，通通都安裝有通風管道。通風管道的作用是排風、除塵等，一般分為排風和局部排風。今天，就分別從排風和局部排風這兩個方面來說說通風管道設計的依據。
Nowadays, ventilation pipes are installed in workshops, office buildings and other buildings. The function of ventilation duct is to exhaust air and dust, which is generally divided into comprehensive exhaust and local exhaust. Today, Tianjiao HVAC explains the basis of ventilation duct design from two aspects: overall ventilation and partial ventilation.
排風一般是在外墻上安裝一定數量的排風扇，依靠排風使室內形成負壓，通風管道設計時就考慮到將室外的新鮮空氣通過門窗進入室內，使整個車間得到通風換氣并使有害氣體濃度沖淡到合乎衛(wèi)生標準要求。從事通風管道安裝的小編提醒大家，當數種溶劑的蒸氣或數種刺激性氣體同時散發(fā)于空氣中時，其通風量應按各自分別稀釋高容許濃度所需空氣量的總和計算。
Full ventilation is usually installed on the external wall with a certain number of exhaust fans, which can form negative pressure in the room. When designing the ventilation duct, it is necessary to take into account the fresh air entering the room through doors and windows, so that the whole workshop can be ventilated and ventilated, and the concentration of harmful gases can be diluted to meet the requirements of health standards. The small edition of ventilation duct installation reminds us that when vapors of several solvents or several irritating gases are emitted into the air at the same time, the ventilation volume should be calculated according to the sum of the air volume needed to dilute to the maximum allowable concentration respectively.
局部排風通風管道設計時就考慮到有害氣體、蒸氣和粉塵在車間內散布，主要采用局部排風系統(tǒng)從發(fā)生源處直接排出室外。局部排風系統(tǒng)由局部排風罩、通風管道，通風機、粉塵或有害氣體凈化設備和排風裝置等組成。當產生的有害氣體、蒸氣或粉塵的工件較大而不能在排風柜內進行加工時，可采用一面敞開，其余面密閉的側方排風罩，或各方均不能密閉的側方排風罩，或上部排風的傘形罩，有單側排風、雙側排風和吹吸式槽邊排風各種形式。
When designing local exhaust ventilation pipeline, harmful gases, vapors and dust are dispersed in the workshop. Local exhaust system is mainly used to directly discharge outdoors from the source. Local exhaust system consists of local exhaust hood, ventilation duct, ventilator, dust or harmful gas purification equipment and exhaust device. When the harmful gas, vapor or dust produced is too large to be processed in the exhaust cabinet, one side of the exhaust hood can be open, the other side of the exhaust hood can be closed, or the other side of the exhaust hood can not be closed, or the upper exhaust umbrella hood, there are various forms of unilateral exhaust, bilateral exhaust and Blow-Suction slot side exhaust.
For more information on the processing of ventilation pipes in Shandong, please click on our official website: http://www.adr7.cn./
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