The smoke crossing of each household, that is, the position of the check valve, is lower than that of the main flue. Because the flue gas flows upward, the smell of the main flue rarely enters the branch flue, and there will be no cross smell.
In the design of the house, the designer has considered the problem of odor, so the smoke crossing at home is not very high, and there is a certain distance from the roof. The purpose of this is to prevent odor from appearing at the entrance of main flue and horizontal branch flue.
Extended data:
Application principle
When the flue gas from the air inlet is discharged into the flue, it will meet the flue gas discharged upward from the lower floor. When two air streams meet, a vortex and an air curtain will be formed, which will hinder the upward movement of the lower flue gas. Once the fire check valve is stuck by oil pollution and cannot be opened, the smoke will string up indoors because of its upward movement.
In order to overcome the technical problems of smoke and smell, the solution adopted is to use the principle of dynamic and static pressure conversion of aerodynamics to set up a patented variable pressure check assembly for extracting gas and accelerating airflow in the flue, so that the smoke can complete the dynamic and static pressure conversion at a specific position;
The exhaust port of the kitchen or bathroom where the range hood is not turned on is in a negative pressure state. The principle of Bernoulli's theorem is used to form suction force, thus eliminating eddy current and air barrier and solving the phenomenon of crosstalk and odor in the smoke exhaust pipeline.