1, five anti-extraction valves, and obtained many national invention patents. When the system exhausts flue gas, the five-prevention extraction valve will produce a unique variable pressure extraction "function" through the aerodynamic principle.
2. The exhaust hood is a national patented technology product, which is installed at the outlet of the exhaust pipeline system, and changes the speed and direction of natural airflow through the action of the spray plate, thus achieving the effect of weatherproofing and exhaust.
Five major protections
Air blocking prevention, backflow prevention, fire prevention, oil accumulation prevention and fault prevention.
Variable pressure principle
According to the conversion between dynamic pressure and static pressure in fluid expressed by aerodynamics-Bernoulli equation, this conversion is realized at the air inlet of the five-proof exhaust valve, which makes the air inlet form negative pressure or static pressure drop when the kitchen range hood or exhaust fan is not turned on; When the kitchen range hood or exhaust fan is turned on, the air inlet will produce jet, which will reduce the negative pressure or static pressure in the pipeline.