The opening and closing angles of the vent actuator may vary due to various factors,and the following are some common situations:

Angle range of common vent actuators

Ventilation openings in ordinary civil buildings,such as those in residential homes,office buildings,and offices,typically have actuator opening angles between 0°and 90°.When closed,the angle is 0°,and when fully opened,it can reach about 90°,which can basically meet the needs of daily ventilation and air exchange.Partially adjustable wind direction vents can be further controlled by adjusting the blade angle on top of opening 90°,but the blade rotation angle is usually around 0°to 30°.

Industrial plant ventilation openings:For some large industrial plant ventilation openings,especially those using electric or pneumatic actuators,the opening angle can reach 90°or even greater,and some specially designed ones can reach 120°to 180°.The closing angle is generally 0°,but due to the complex industrial environment,in order to ensure safety and ventilation,some ventilation openings may be designed with a certain sealing angle when closed,such as closing to around negative 5°,so that the ventilation openings can be better sealed when closed,preventing dust,debris from entering and heat and cold air leakage.

Ventilation actuator angle in special application scenarios

Fire exhaust vent:In the fire exhaust system,the opening angle of the vent actuator is required to be large to ensure that smoke can be quickly expelled in the event of a fire.The common opening angle of fire smoke exhaust skylights is a straight shaped skylight that can open up to 90 degrees,perpendicular to the roof;The opening angle of the triangular sunroof is around 30 degrees;The opening angle of the side opening sunroof in the circular arch sunroof is between 30°and 60°,while the opening angle of the upper opening sunroof is between 30°and 45°.

Ventilation openings in the aerospace field:actuators for ventilation openings on aircraft,typically with an opening angle of around 0°to 45°,are designed to achieve airflow control within a limited space and meet ventilation and pressure regulation requirements under different flight conditions.The closing angle is generally 0°,and good sealing and stability are required when closing to ensure flight safety.