The smoke prevention and exhaust system mainly includes two parts. One is the smoke prevention system, such as the positive pressure air supply system, which maintains a relatively high pressure in a certain space so that the smoke cannot enter. There are such systems in stairwells and elevator forerooms of high-rise buildings.

Second, various systems that play the role of smoke exhaust, such as smoke exhaust system and air supply system, achieve certain fire prevention function by supplementing the outside air in a certain fire prevention zone. Smoke control system is generally composed of fan, air valve, air duct and air outlet. Unlike other systems of ventilation and air conditioning, smoke control system must participate in fire fighting linkage, which is also an important acceptance content in fire fighting acceptance.

If you want to open a restaurant, you are advised to buy a common rehearsal device.

The range hood is designed for families, and the smoke exhaust effect may not be good.

I heard that Haier has a commercial range hood. You can ask in front of the Haier counter in the shopping mall to add: The EIA Environmental Protection Bureau clearly stipulates that catering enterprises must have legal and qualified smoke exhaust pipes, and it is forbidden to discharge the smoke exhaust pipes through sewers.

before renovation, it is best to consult the environmental protection department. For example, when some shopkeepers open a shop for decoration, the smoke outlet or the window of the kitchen is just aimed at the residents behind. Even if the management department doesn't know for a while, the residents behind will still complain and often have to spend money to adjust.

it's about 2 meters above the ground! Too bottom! Tall chefs are easy to meet! The chef has to wear a hat! ! If it is too high, it will affect the ability and effect of ventilation.

There are many kinds of smoke exhaust fans in hotels:

① Circular axial-flow fans, which are suitable for small hotels, have large exhaust capacity, can be installed on the wall or connected to pipes, and are less limited by the installation environment;

② centrifugal fan, which has a large wind pressure, but a small air volume, that is, it can pump a long distance, but the smoke is slow, which is greatly affected by the installation environment.