How many floors are prone to grease pouring:
10 floors above the easier grease pouring, which is mainly due to changes in air atmospheric pressure, when the atmospheric pressure is greater than the pressure in the hood, grease will be from the bottom to the top of the walk, and then from the nearby outlet pouring out. If you want to prevent the backflow of grease, you may want to install a non-return valve on the hood outlet.
How to prevent the backflow of grease:
1, the installation of non-return valve
You can install a non-return valve in the hood outlet, which can effectively eliminate the grease backflow and exhaust smoke problems.
2, change the hood hose inlet
To check whether the hood hose inlet from the front of the flue to the side, because the side of the vice flue width of only 100mm, much narrower than the front. And according to the principle of aerodynamics, the air inlet in the position of the vice flue, it will reduce the speed of air emissions rise, increase the resistance to emissions, when the kitchen and flue air convection, the kitchen air pressure will be less than the flue air pressure, so it will lead to inevitable fumes back up and other phenomena, so the hood hose inlet to be changed will be to the front.
3, close the windows and doors to prevent convection
To check whether the kitchen door or window is open. If the window is not open when the hood is working, it will not be able to form air convection, and the fumes will not be able to be discharged. If the window is not open when the hood is not working, the air pressure in the kitchen will be less than that of the flue, and it is inevitable that the fumes will back up into your home.
4, check the catering fumes
To check whether the catering hood discharge is connected to the residential kitchen flue. If it is, then the fumes will always back up into your home. Because the power of the catering hood is at 2000m?/h, both the emission or discharge rate is bigger and faster than your home hood.
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