The way the grill extracts smoke

With the gradual large-scale development of barbecue in recent years, more and more shops using cooking equipment have been used, but there are also many barbecue restaurants that have suffered serious losses or even closed down soon after opening. As far as barbecue restaurants are concerned, the deliciousness of food and the reasonable price are the main points of management, but a good dining environment is the condition. At this stage, to open a barbecue restaurant, you need to consider the barbecue smoke, so what are the methods for barbecue smoke?
First, the method of smoke extraction on the outdoor barbecue stove
The ceiling is piped, and an exhaust hood directly above each table is facing the barbecue grill, which can be pulled down to absorb smoke when it is presented, and this method of smoke extraction is popular in Korea.
Second, the method of smoke exhaust under the outdoor barbecue stove
This method is very common in domestic barbecue restaurants, the pipe is laid under the floor or another screen is made to wrap the pipe in, of course, whether stainless steel smoking pipe is required depends on whether the oven has its own lower smoke vent.