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Motorized Damper basically has the same structure as regular air valves (such as VCD valves), but has an additional important part, the motor:
Valve body: The main frame of the valve, which can be square, rectangular or round, is made from galvanized steel or stainless steel.
Valve leaf (valve leaf): Metal plates that can be rotated to adjust the ventilation area.
Actuator/Motor: This is the core part that makes up the "engine valve". This motor receives an electrical signal (for example: 0-10VDC, 4-20mA signal, or ON/OFF open/close signal) from the control system and its rotation becomes the opening/closing movement of the valve leaf. Popular motor brands include Belimo, Honeywell, Siemens, etc.
Valve shaft and bearing: Connects the motor to the valve leaf, ensuring smooth movement.
Zone air flow control: In large buildings, the HVAC system is often divided into many areas (zones). Each zone can have a motorized valve to adjust the supply air flow, ensuring the temperature and air quality match the needs of each zone.
Fresh air and exhaust system: Controls engine valves to take in fresh air or exhaust air based on interior air quality or operating schedule.
Air mixing system: Controls the mixing ratio between fresh air and return air to optimize energy efficiency.
Room pressure control: Especially in clean rooms, operating rooms, or laboratories, motorized valves combine with pressure sensors to maintain precise positive or negative pressure.
The operating principle of the engine valve is based on automatic control:
Receive signals: The control motor receives signals from a central controller, such as a building management system (BMS), temperature controller, or pressure sensor.
Motion: Depending on the signal type and settings, the motor will rotate a certain angle, driving the shaft to open or close the valve leaflets.
ON/OFF type: The motor has only 2 states: completely open or completely closed.
Proportional control type (modulating): The motor can open the valve to various degrees (e.g. 0%, 25%, 50%, 75%, 100%) depending on the control signal, allowing more precise adjustment of air flow.
Feedback (optional): Some motors have the function of feedback (feedback) the valve status to the control system, indicating what percentage the valve is open, helping the system to monitor and control more accurately.
High automation: Fully automatic operation, no manual intervention required, minimizing human effort and operating errors.
Precise control: Especially with proportional control motors, allowing extremely precise adjustment of air flow to meet exact needs.
Energy saving: Optimize energy usage by supplying only the amount of air needed to each area, minimizing waste.
Remote monitoring and control: Allows status monitoring and remote adjustment through the BMS system.
Increase comfort and air quality: Ensure the living and working environment is always comfortable and fresh.
Fire safety: Motorized fire suppression and smoke control valves play an extremely important role in building fire safety.
