The material of smoke and fire dampers (used to control the flow of smoke in pipelines during a fire) generally includes carbon (C) material, galvanized steel plate (Zinc coated steel), suitable for installation on the supply and return air ducts of ventilation and air conditioning systems. They are usually in an open state and close when the temperature of smoke in the pipeline reaches 70 degrees Celsius during a fire, and can meet the requirements of smoke leakage and fire resistance integrity within a certain period of time, playing a role in smoke isolation and fire prevention.
        The smoke exhaust damper and exhaust fan should be able to operate continuously for 30 minutes at 280 ℃. The electric operated smoke exhaust valve (port) should be flexibly and reliably opened when the rated working voltage is 15 degrees lower or 10 degrees higher, and the wiring terminals should be determined. Connect the power cord in series with the output terminal of the output module to the valve (functions: cutoff, diversion, voltage stabilization, diversion, etc.) power cord. High rise and other modern buildings are equipped with ventilation, air conditioning, and smoke control systems. In the event of a fire, the pipes in these systems will become channels for flames and smoke to spread. Smoke exhaust outlet: composed of smoke exhaust valve and louver vent or plate vent, used on the smoke exhaust branch pipe of the rocket exhaust system.
        In addition, regarding the use of smoke and fire dampers (function: to control the flow of smoke in pipelines during a fire):
        (1) The valve is usually in a normally open state. When the airflow temperature reaches 70 ℃, the temperature sensor will activate and the valve will close;
        （2）0° ～90° Manually adjust the blade opening within the range;
        (3) Manually close or reset;
        (4) Output valve closing signal, which can be interlocked with other fire prevention equipment. A smoke exhaust fan is a mechanical device that can quickly remove odors, high temperatures, and cooking fumes generated during food processing in the kitchen. The machine is characterized by good high-temperature resistance and high efficiency.
        Fire exhaust and fire dampers are usually installed on the air ducts of ventilation and air conditioning systems that require adjustment of air volume (defined as the flow of air per unit time), and are suitable for horizontal or vertical airflow ducts. The fan of the 3c smoke exhaust fire damper smoke exhaust system should be separately installed. The position of the smoke exhaust fan should be on the same or upper floor of the smoke exhaust area. Low noise axial flow fan is an indispensable key equipment in the kitchen. It is recommended not to install it in the ceiling as much as possible, but to install it in places such as computer rooms, roofs, or exterior walls that are easy to maintain. Smoke and fire control valves are usually installed on the air ducts of ventilation and air conditioning systems that require air volume adjustment or control valve door closure with electrical signals. Suitable for horizontal or vertical airflow ducts.