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The outlet of the oil fume well is too small, which leads to the slow removal of oil fume, and the well presents a positive pressure state. The well is made of gypsum board, which leads to air leakage
The outlet of the oil fume well is too small, which leads to the slow removal of oil fume, and the well presents a positive pressure state. The well is made of gypsum board, which leads to air leakage.

Solution: (1) Add an axial fan at the flue outlet and turn it on manually.

(2) You can set the time on and off with the time control switch.

(3) The reserved smoke outlet of each house can be equipped with backflow prevention fans.

There are a lot of wrangling in the public sector, so we should be thorough.