专注通风管道加工·排烟罩

1、 Length of kitchen smoke exhaust pipe

厨房排烟管道水平段不宜过长一般远水平距离不应超过15m，坡度少应为2%。水平端有柔性接头，便于清理油脂。根据规范，排气速度少为10m/s，并且需要在与排气罩相连的支管中提供空气，以防止油因风速过低而粘附在烟囱上。

The horizontal section of the kitchen smoke exhaust pipe should not be too long. Generally, the distance from the far horizontal should not exceed 15m, and the slope should be at least 2%. There is a flexible joint at the horizontal end to facilitate grease removal. According to the specification, the exhaust speed shall be at least 10m/s, and air shall be provided in the branch pipe connected with the exhaust hood to prevent oil from adhering to the chimney due to low wind speed.

二、厨房排烟管道设计安装的合理性

2、 Rationality of design and installation of kitchen smoke exhaust pipe

工程经验表明，主排烟道风速不能超过15m/s。否则，经过一段时间的运行(如一年后)，排烟系统很容易变钝。油烟净化器在运行中，多数情况下是因为排气管通风面积不够，管内气体流速在15m/s以上。

Engineering experience shows that the wind speed of the main exhaust flue shall not exceed 15m/s. Otherwise, after a period of operation (such as one year later), the smoke exhaust system is easy to become blunt. During the operation of the oil fume purifier, in most cases, the ventilation area of the exhaust pipe is insufficient, and the gas flow rate in the pipe is above 15m/s.

三、排烟管不畅通的原因

3、 Reasons for blockage of smoke exhaust pipe

1、由于排烟管要穿过建筑梁，管道的通风截面积变小，截面阻力变大，从而阻碍气流。

1. As the smoke exhaust pipe needs to pass through the building beam, the ventilation sectional area of the pipe becomes smaller and the sectional resistance becomes larger, thus blocking the airflow.

2、排烟管穿过建筑物横梁或避开其他设备管道时，排烟管的横截面低于整个排烟管的平面。使用一段时间后，油水混合物会在排气管下部积聚，直接影响排气的顺畅性。

2. When the smoke exhaust pipe passes through the building beam or avoids other equipment pipes, the cross section of the smoke exhaust pipe is lower than the plane of the entire smoke exhaust pipe. After a period of use, the oil-water mixture will accumulate in the lower part of the exhaust pipe, directly affecting the smoothness of the exhaust.

3、不同楼层厨房油烟通过同一总管排出，靠近出风口的楼层厨房排烟效果更好，而较低楼层厨房则不顺畅。

3. The cooking fume from kitchens on different floors is discharged through the same main pipe. The kitchen on the floor near the air outlet has better smoke exhaust effect, while the kitchen on the lower floor is not smooth.