由于廚房所在建筑物的格局以及廚房在建筑物中位置不同，有條件的廚房應由建筑物的集中空調系統進行有序送風。但目前所遇到的大部分情況是建筑物沒有設置廚房的送風系統。許多帶餐廳、廚房等的建筑物，僅設計了集中采暖系統而無集中空調系統。當廚房處于工作狀態時，排風系統投入運行，廚房內處于負壓狀態，新風來源包括室外新風滲透和餐廳的空氣大量補入廚房。

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.

無序送風會造成廚房的工作環境惡劣。特別是在夏季，雖然餐廳內通常會安裝一些局部柜式空調機以降低餐廳的室內溫度，但室內空氣補入廚房，并不能廚房的熱負荷并降低廚房溫度。由于廚房油煙較大，如果在廚房內設局部柜式空調機以降低廚房內的溫度，柜式空調機的回風過濾則應定期清理。

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.

一般家里的油煙會先到副煙道里，做一個緩存，然后再通過隔板上的孔進入主煙道，這樣可保證每戶的油煙是隔離開來的，不會串煙。主副煙道必須同時存在。一些業主家出現倒煙或是串煙現象很可能是由于裝修時錯誤地把排煙管和主煙道相連，或是為了節省空間拆掉了副煙道。如果直接連接主煙道，由于其向上的吸力很大，可以比喻為“拔火罐效應”，一旦氣壓比較低，就可能把別家的油煙壓到自家來。而副煙道則有很好的緩存作用，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.

廚房的排氣系統宜按防火分區劃分，盡量不穿過防火墻，穿過時應裝防火閥。 廚房通風系統的管道應采用不燃燒材料制成。

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.