It is well known that if the kitchen exhaust ventilation duct is not properly installed, it will have a great impact on the restaurant and the living environment of the surrounding people. The following is an introduction to the kitchen exhaust ventilation duct installation precautions.

Kitchen exhaust ventilation pipe installation precautions

1, the secondary flue must be retained

Every family kitchen has a flue, and the flue has a main and secondary difference, the main flue connected to the entire building, while the secondary flue is more independent. Usually, the grease from the home will go to the secondary flue first, and then go into the main flue through the holes in the partition, which ensures that the grease from each home is separated. If the secondary flue is connected directly to the main flue, the pressure will be too low, resulting in backward smoke, string smoke and other phenomena.

2, construction details should pay attention to

First of all, it is particularly important to decide where the hood is placed. Short pipes are better. Some users will be for the sake of aesthetics, the pipeline will be stretched longer, so that after closing the hood, the pipeline will also collect a lot of fumes can not be discharged, and then pour back into the room. In addition, in order not to destroy the original primary and secondary flue, its opening orientation is not arbitrary change, must be played into the secondary flue.

3, window smoke note safety

Part of the user in order to prevent crosstalk problems, give up the original flue, directly in the window openings smoke, this is fine, but there are a few things to pay attention to, first of all, in the window or wall openings, must be agreed through the property. Secondly, we should pay attention to safety issues, usually the end of the exhaust pipe is made of metal, if the hole is too small, the metal heat transfer may cause the glass to crack, and the pipe leads to the window, strong winds blowing against the fumes caused by backflow. Try to stick out the pipe and then nestle the pipe downward, which also prevents rainwater from flowing into the pipe when it rains and keeps the wind out.

4, non-return valve diligently replaced

If the secondary flue has been removed, or to avoid the role of backing up the smoke is good, then the use of flue non-return valve. Usually the condition, the effect of the non-return valve is not obvious, and in the flue to add a non-return valve can protect the hood, so that the smoke in the flue will not be backed up to the pipeline and the hood. However, after installing the non-return valve should be cleaned regularly, otherwise the non-return valve will be open and lose its effect, and it is best to change it once every 2 years.