（1）保温隔热。餐饮建筑属于商业经营，油烟量大，厨房排烟管道的走向往往跨越多个房间。如果不进行保温包封，管道的热量会影响穿越房间的温度。
(1) Thermal insulation. Catering buildings belong to commercial operation, with a large amount of lampblack. The direction of kitchen smoke exhaust pipe often spans multiple rooms. If thermal insulation is not applied, the heat of the pipe will affect the temperature of the room crossing.
（2）防火作用。厨房排气管通常由镀锌铁或不锈钢制成。长期使用后，油垢污垢会积聚在管道内壁上。如果不小心使用，会导致火灾。
(2) Fire protection. Kitchen exhaust pipes are usually made of galvanized iron or stainless steel. After long-term use, oil dirt and dirt will accumulate on the inner wall of the pipe. If not used carefully, it may cause fire.
对厨房排烟管进行封装，一是起到其保温隔热的作用，二是起到防火的作用。在餐饮建筑厨房排烟工程施工中，不能忘记厨房排烟管的封装。
Encapsulation of kitchen smoke exhaust pipe plays the role of heat insulation and fire prevention. In the construction of kitchen smoke exhaust engineering in catering buildings, the sealing of kitchen smoke exhaust pipe should not be forgotten.
抽油烟机和烟道的接口，密封一定一定要做好，排烟管道和烟道是需要人工连接的，要是不小心漏条缝什么的就会漏烟，而且不容易察觉。另外，烟道止回阀是个好东西，可以防止公共烟道里的烟进入自家厨房，希望大家都能拥有。
The sealing of the interface between the range hood and the flue must be done well. The smoke exhaust pipe and the flue need to be manually connected. If the seam is accidentally leaked, the smoke will leak, and it is not easy to detect. In addition, the flue check valve is a good thing, which can prevent the smoke in the public flue from entering your kitchen. I hope everyone can have it.
在日常的使用过程中。
In daily use.
油烟机表面和烟管内部的积存油污很快，长期得不到处理，油垢也会越积越厚，如果遇明火或温度过高会燃烧，并沿着管道内壁蔓延。另外，油垢堵塞通道后，会造成烟囱和油烟管道内温度过高，引起油垢自燃或管道可燃外包装材料燃烧造成火灾。
The oil stain on the surface of the range hood and inside the smoke pipe accumulates quickly and cannot be treated for a long time. The oil stain will also become thicker and thicker. In case of open fire or high temperature, it will burn and spread along the inner wall of the pipe. In addition, after the oil dirt blocks the passage, the temperature in the chimney and the oil smoke pipe will be too high, which will cause the oil dirt to self ignite or the pipe to burn the combustible outer packaging materials, causing a fire.
抽油烟机和烟道的接口，密封一定一定要做好，排烟管道和烟道是需要人工连接的，要是不小心漏条缝什么的就会漏烟，而且不容易察觉。另外，烟道止回阀是个好东西，可以防止公共烟道里的烟进入自家厨房，希望大家都能拥有。
The sealing of the interface between the range hood and the flue must be done well. The smoke exhaust pipe and the flue need to be manually connected. If the seam is accidentally leaked, the smoke will leak, and it is not easy to detect. In addition, the flue check valve is a good thing, which can prevent the smoke in the public flue from entering your kitchen. I hope everyone can have it.
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