關于空氣凈化工程通風除塵裝置的結構闡述
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- 發布日期：2017-04-13 16:17:53
空氣凈化工程常用通風系統的不足之處有：
Common ventilation system of air purification engineering is a lack of:
（1）氣流組織不合理，對于送（回）風口的位置、型式和送風射流參數之間的關系處理不當，以至于氣流分布不均勻，產生渦流，積聚有害物質。
(1) the air flow organization is not reasonable, to send (back) tuyere location, type and send wind jet parameters between the inappropriate handling of the relationship between that airflow distribution is not uniform, the vortex, the accumulation of harmful substances.
（2）通風機參數選擇不合理，沒有經過必要的計算，憑經驗決定通風次數及余熱、有害物質濃度等問題，致使風量、風壓的過大或過小。
(2) fan parameters selection is unreasonable, not after the necessary calculations and empirically decided times of ventilation and heat, the concentration of harmful substances and other issues, resulting in volume and pressure is too large or too small.
（3）聲學技術不合理，在空氣凈化工程 http://www.jnjkjh.com/實際中常常忽視聲學設計，多數采用單臺通風機的方案，而且風機功率和轉速偏大，造成聲級高、振動大，從而給噪聲與振動控制帶來困難。
(3) acoustic technology is not reasonable, air purification in the engineering practice often ignore the acoustical design, most of them adopt the scheme of single fan and fan power and speed is too large, resulting in high sound level, vibration, thus to the noise and vibration control difficult.
新設計消聲通風除塵裝置由過濾除塵器、進氣口阻性片式消聲器、排氣口阻性片式消聲器、風機隔聲罩及離心風機等幾部分組成。在滿足通風要求的前提下，采用兩臺風機的設計方案，以盡量降低其噪聲影響。
The new design of the ventilation and dust removal device is composed of a filter dust collector, an air inlet of the air inlet, an exhaust port, a muffler, a wind turbine sound insulation cover and a centrifugal fan. On the premise of meeting the requirement of ventilation, the design scheme of two Typhoon aircraft is adopted to reduce the noise effect.
該消聲通風除塵裝置所依據的基本原理為：無論采取何種通風方式，當單位時間進入室內的空氣質量和同一時間排出室內的空氣質量保持相等時，通風房間空氣質量保持平衡，其數學表達式為：Mjj+Mzj=Mjp+Mzp，其中，Mjj和Mzj分別為強制進風量和自然進風量，Mjp和Mzp分別為強制排風量和自然排風量。當Mjj>Mjp時室內空氣壓力大于室外空氣壓力，室內為正壓，這時部分空氣會通過房間不嚴密的縫隙、窗戶或門洞滲到室外，使外界灰塵進不到房間內部。
The silencing, ventilating and dust removing device is based on the basic principle is: whatever the way of ventilation, when units of time into indoor air quality and at the same time discharge indoor air quality remains the same, the ventilation room air quality to maintain a balance, the mathematical expression of: Mjj+Mzj=Mjp+Mzp, which, Mjj Mzj respectively is forced into the air and natural wind, and Mzp Mjp respectively forced ventilation and natural ventilation. When Mjj>Mjp indoor air pressure is greater than the outside air pressure, indoor positive pressure, then part of the air will through the room does not close the gap, a window or door infiltration to the outside, outside the dust can not enter into the inside of the room.
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