The main function of flue non-return valve is to prevent flue gas from flowing backwards and play a blocking role. On the one hand, the smoke can be removed normally, and on the other hand, the smoke can be prevented from flowing backwards due to back blowing. The unique variable pressure pumping technology makes the air inlet generate static pressure or even negative pressure, which can not only easily meet the check function, but also fundamentally solve the problems of oil fume backflow and oil fume odor.
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 problem of smoke smell, the solution is to use the principle of dynamic-static pressure conversion (Bernoulli theorem) of aerodynamics and the combined variable pressure refractory flue developed by Wei Zi Institute of Architecture and Technology, Jiangsu Province, and to set patented variable pressure check elements for pumping air and accelerating air flow in the flue, so that the dynamic-static pressure conversion of smoke can be completed 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.
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