通风是一种换气设备，它是用机械或自然的方法向室内空间送入足够的新鲜空气，同时把室内不符合卫生要求的污浊空气排出，使室内空气满足卫生要求和生产过程需要，通风管道设备有着十分广泛的使用范围。
Ventilation is a kind of ventilation equipment, which uses mechanical or natural methods to send enough fresh air to the indoor space, while exhausting the dirty air which does not meet the sanitary requirements, so that the indoor air can meet the sanitary requirements and the needs of the production process. The ventilation pipe equipment has a very wide range of use.
当今，建筑中完成通风工作的各项设施，统称通风管道设备。通风管道设备分排风扇，换气扇，风机等，又分工业用及家用二种。而风机又分高、中、低、负压等。
Nowadays, the ventilation facilities in buildings are called ventilation pipe equipment. Ventilation duct equipment is divided into exhaust fan, ventilator, fan, industrial and household two kinds. And the fan is divided into high, medium, low, negative pressure and so on.
济南通风管道
Jinan ventilation duct
1、稀释通风
1. Dilution ventilation
稀释通风又称混合通风，即送人比室内污染物浓度低的空气与室内空气混合，以此降低室内污染物的浓度，达到卫生标难。
Dilution ventilation, also known as mixed ventilation, is to send air with lower concentration than indoor pollutants to mix with indoor air, so as to reduce the concentration of indoor pollutants and meet the health standards.
2、置换通风
2. Displacement ventilation


在置换通风系统中，新鲜冷空气由房间底部以很低的速度送入，送风温差仅为2—4Y。送入的新鲜空气因密度大而像水一样弥漫整个房间的底部，热源引起的热对流气流使室内产生垂直的温度禅度，气流缓慢上升，脱离工作区，将余热和污染物推向房间顶部，然后由设在顶棚上或房间顶部的排风口直接排出。
In the displacement ventilation system, fresh cold air is fed from the bottom of the room at a very low speed, and the temperature difference of the air supply is only 2-4y. Because of the high density of the fresh air, it permeates the bottom of the room like water. The heat convection air flow caused by the heat source makes the room produce a vertical temperature Zen degree. The air flow rises slowly and leaves the working area. The waste heat and pollutants are pushed to the top of the room, and then directly discharged by the air outlet set on the ceiling or the top of the room.
济南通风管道厂家发现室内空气近似活塞状流动，使污染物随空气流动从房间顶部排出，工作区基本处于送入空气中，即工作区污染物浓度约等于送人空气的浓度，这是置换通风与传统的稀释全面通风的更大区别。在通风管道中，显然置换通风的通风效果比稀释通风要好。
Jinan ventilation duct manufacturers found that the indoor air flow is almost piston like, which makes the pollutants discharged from the top of the room with the air flow. The working area is basically in the air, that is, the concentration of pollutants in the working area is approximately equal to the concentration of the air sent to the air, which is a greater difference between displacement ventilation and traditional dilution full face ventilation. It is obvious that displacement ventilation is better than dilution ventilation in ventilation duct.
3、局部通风
3. Local ventilation
局部通风就是利用局部气流，使局部地点不受有害物的污染，造成良好的空气环境。
Local ventilation is the use of local air flow, so that local sites are not polluted by harmful substances, resulting in a good air environment.
局部通风系统分为局部送风和局部排风两大类。局部排风是将污染物就地捕集、净化后排放至室外。局部送风是将经过处理的、合乎要求的空气送到局部工作地点，以保证局部区域的空气条件。局部通风方式作为保证工作和生活环境空气品质、防止室内环境污染的技术措施应优先考虑。
Local ventilation system can be divided into local air supply and local exhaust. Local exhaust is to collect and purify pollutants on the spot and then discharge them to the outdoor. Local air supply is to send the treated and qualified air to the local working place to ensure the air condition in the local area. As a technical measure to ensure the air quality of working and living environment and prevent indoor environmental pollution, local ventilation should be given priority. 上一篇：山东通风管道的安装质量该如何把控
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