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When cooking and stir-frying, the range hood hits,
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The place where the smoke exhaust pipe and the flue are connected is used with smoke proof (check valve).
At the outlet of the range hood, add a semi-circular air outlet to prevent smoke backing.
General back-up smoke may be:
1. During civil construction, the two adjacent smoke exhaust outlets are not staggered and connected by masonry (judgment method: whether there is commonality in the implementation of the neighbor's house). >>>More
Just buy a flue check valve.
Among them, the flue is divided into the main flue and the auxiliary flue, the main flue is generally shared by the kitchen of the whole building, it is vertical up and down, and the pipe is relatively thick, and the fume of all residential kitchens is discharged from here. >>>More
The kitchen is mainly the smoke window air pressure in the kitchen, and it will not go up for a while, so it will be from the smoke window to each door. >>>More
It is the movable page fan of the check valve that is stuck, and the only way to repair it is to remove the exhaust pipe of the range hood to repair it.