关于空气净化工程通风除尘装置的结构阐述
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- 发布日期：2017-04-13 16:17:53
空气净化工程常用通风系统的不足之处有：
Common ventilation system of air purification engineering is a lack of:
（1）气流组织不合理，对于送（回）风口的位置、型式和送风射流参数之间的关系处理不当，以至于气流分布不均匀，产生涡流，积聚有害物质。
(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）通风机参数选择不合理，没有经过必要的计算，凭经验决定通风次数及余热、有害物质浓度等问题，致使风量、风压的过大或过小。
(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）声学技术不合理，在空气净化工程 http://www.jnjkjh.com/实际中常常忽视声学设计，多数采用单台通风机的方案，而且风机功率和转速偏大，造成声级高、振动大，从而给噪声与振动控制带来困难。
(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.
新设计消声通风除尘装置由过滤除尘器、进气口阻性片式消声器、排气口阻性片式消声器、风机隔声罩及离心风机等几部分组成。在满足通风要求的前提下，采用两台风机的设计方案，以尽量降低其噪声影响。
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.
该消声通风除尘装置所依据的基本原理为：无论采取何种通风方式，当单位时间进入室内的空气质量和同一时间排出室内的空气质量保持相等时，通风房间空气质量保持平衡，其数学表达式为：Mjj+Mzj=Mjp+Mzp，其中，Mjj和Mzj分别为强制进风量和自然进风量，Mjp和Mzp分别为强制排风量和自然排风量。当Mjj>Mjp时室内空气压力大于室外空气压力，室内为正压，这时部分空气会通过房间不严密的缝隙、窗户或门洞渗到室外，使外界灰尘进不到房间内部。
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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