厨房排烟管道的水平段不宜太长，一般水平远距离不应超过15m并且要有2%以上的坡度，水平末端设活接头，以方便清理油垢。排风速度按规范不得低于 10m/s，以防风速过低使油附着于烟道上，接排风罩的支管应设风量调节阀。排烟管道的设计和安装不合理，往往会造成厨房排烟不通畅，直接影响油烟净化器的使用。
The exhaust pipe of the horizontal section of the kitchen should not be too long, the general level of the distance should not be more than 15m and have more than 2% slope, the level set the end of union, to facilitate the removal of grease. The air discharge speed is not lower than 10m/s according to the standard. The oil is attached to the flue by the wind speed too low, and the pipe of the exhaust hood should be set by the air quantity regulating valve. The design and installation of the exhaust pipe is not reasonable, which often causes the unobstructed smoke in the kitchen, which directly affects the use of the fume purifier.
通风管道为改善室内环境，通过机械通风实现环境的改善，我们平时常用的有哪几种机械通风方法？
Ventilation pipeline to improve the indoor environment, through mechanical ventilation to improve the environment, what kinds of mechanical ventilation do we usually have in common use?
置换通风:在置换通风系统中,新鲜冷空气由房间底部以很低的速度(o.03-o.59t/s)送人,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,后由设在顶棚上或房间顶部的排风口直接排出.稀释通风: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.
Displacement ventilation: in displacement ventilation system, fresh air from the bottom of the room at a very low speed (o.03-o.59t/s) give, air temperature is only 2-4Y. into the fresh air because of high density and like water filled the whole room at the bottom of the heat caused by the heat generated within the room temperature of gas flow perpendicular to the Zen flow, flow slowly rising, from the work area, the waste heat and pollutants to the top of the room, by the end of the air outlet in the room at the top of the ceiling or discharged directly. Dilution ventilation: dilution ventilation and mixing ventilation, air and indoor air mixed free indoor pollutant concentration than low, thereby reducing the concentration of indoor pollutants, to achieve health standard.
局部通风: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.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 ventilation is the use of local airflow, the local place is not affected by the contamination of harmful substances, resulting in good air environment. Local ventilation system is divided into local ventilation and local exhaust two categories. Local exhaust pollutants is local collection and purification before discharge to the outside air is the Bureau of the Ministry. After treatment, in line with the requirements of the air to the local place of work, to ensure the local air conditions. Local ventilation as a way to ensure the working and living environment air quality, technical measures to prevent pollution of indoor environment should be given priority.
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