由于厨房所在建筑物的格局以及厨房在建筑物中位置不同，有条件的厨房应由建筑物的集中空调系统进行有序送风。但目前所遇到的大部分情况是建筑物没有设置厨房的送风系统。许多带餐厅、厨房等的建筑物，仅设计了集中采暖系统而无集中空调系统。当厨房处于工作状态时，排风系统投入运行，厨房内处于负压状态，新风来源包括室外新风渗透和餐厅的空气大量补入厨房。
Due to the difference between the layout of the kitchen and the location of the kitchen in the building, conditioned kitchens should be ordered by the central air conditioning system of the building. But at present, most of the situation is that the building does not set the kitchen air supply system. Many buildings, such as restaurants, kitchens, etc., have only been designed for a centralized heating system without a centralized air conditioning system. When the kitchen is in working state, the exhaust system is put into operation, and the kitchen is in a negative pressure state. The fresh air source includes outdoor outdoor air infiltration and restaurant air filling into the kitchen.
无序送风会造成厨房的工作环境恶劣。特别是在夏季，虽然餐厅内通常会安装一些局部柜式空调机以降低餐厅的室内温度，但室内空气补入厨房，并不能厨房的热负荷并降低厨房温度。由于厨房油烟较大，如果在厨房内设局部柜式空调机以降低厨房内的温度，柜式空调机的回风过滤则应定期清理。
Disordered air supply will cause bad working environment in the kitchen. Especially in summer, although some local cabinet air conditioners are usually installed in restaurants to reduce the indoor temperature of restaurants, indoor air filling into the kitchen can not eliminate the heat load of the kitchen and reduce the temperature of the kitchen. If the kitchen fume is large, if the local cabinet air conditioner is installed in the kitchen to reduce the temperature in the kitchen, the return air filtration of the cabinet air conditioner should be cleaned regularly.
一般家里的油烟会先到副烟道里，做一个缓存，然后再通过隔板上的孔进入主烟道，这样可保证每户的油烟是隔离开来的，不会串烟。主副烟道必须同时存在。一些业主家出现倒烟或是串烟现象很可能是由于装修时错误地把排烟管和主烟道相连，或是为了节省空间拆掉了副烟道。如果直接连接主烟道，由于其向上的吸力很大，可以比喻为“拔火罐效应”，一旦气压比较低，就可能把别家的油烟压到自家来。而副烟道则有很好的缓存作用，所以不能拆除。
Generally, the lampblack in the family will go to the auxiliary flue first, make a cache, then enter the main flue through the holes on the clapboard, so that each household's lampblack is isolated and does not smoke. The main and auxiliary flue must exist at the same time. Some owners smoke or smoke phenomenon is likely due to the decoration mistake of the exhaust pipe is connected with the main flue, or in order to save space down side flue. If the direct connection of the main flue, the upward suction is large, can be likened to the "cupping effect", once the pressure is relatively low, it may bring pressure to their home don't smoke here. And the auxiliary flue has a good caching effect, so it can't be dismantled.
厨房的排气系统宜按防火分区划分，尽量不穿过防火墙，穿过时应装防火阀。 厨房通风系统的管道应采用不燃烧材料制成。
The exhaust system of the kitchen should be divided according to the fireproof partition, and try not to pass through the firewall as far as possible, and the fire valve should be installed when passing through. The pipe of the kitchen ventilation system should be made of non - burning material.
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