If there is a problem with the smoke exhaust system of the ventilation duct, it will affect the normal use of the duct. Where should we find the reason after the problem? Let Shandong ventilation pipe processing factory tell you!

1、設計不合理：因在開業裝修時預計的就餐人員飽和值低于現今就餐飽和值，后廚工作量增加，多臺灶同時作業，原設計風機轉數低，排煙量小，導致排煙不暢。解決方法：在排煙口加裝風扇式四葉或六葉排煙風機，提高排煙量，或更換大風量風機。

1. Unreasonable design: because the expected saturation value of dining personnel during opening and decoration is lower than the current dining saturation value, the workload of back kitchen increases, multiple stoves operate at the same time, the original design fan speed is low and the smoke exhaust volume is small, resulting in poor smoke exhaust. Solution: install fan type four leaf or six leaf smoke exhaust fan at the smoke exhaust outlet to improve the smoke exhaust volume, or replace the high wind volume fan.

2、設備陳舊老化：部分廚房設備中的老式排油煙設備排油煙罩老化，導致煙罩漏風，排煙量降低。排煙風機老化導致轉速降低，排煙量降低，老式排油煙設備的油煙管道都比較細(管徑約300mm*300mm),因長時間積存油垢又不方便清洗，也同樣導致排煙效果不好。

2. Old and aging equipment: the old oil fume exhaust equipment in some kitchen equipment has an aging oil fume hood, resulting in air leakage of the hood and reduced smoke exhaust. The aging of the smoke exhaust fan leads to the reduction of the speed and smoke exhaust volume. The oil fume pipes of the old oil fume exhaust equipment are relatively thin (the pipe diameter is about 300mm * 300mm). Due to the accumulation of oil dirt for a long time and inconvenient cleaning, the smoke exhaust effect is also poor.

另外，還有大家可能容易忽略的問題，這也是比較重要的一點，那就是是要加強平時通風管道保養和清洗工作，這也會影響通風管道的排煙工作。

In addition, there are some problems that you may easily ignore, which is also an important point. That is to strengthen the maintenance and cleaning of the ventilation duct at ordinary times, which will also affect the smoke exhaust of the ventilation duct.