Core logic: Wind speed control should be combined with heating requirements, temperature control accuracy, and usage scenarios, and prioritize the "stable and reliable+energy-saving adaptation" approach.
1、 Variable frequency drive speed control scheme
1. Applicable scenarios: Scenarios that require precise temperature control (such as ± 1 ℃) and continuously adjustable wind speed, such as industrial production lines and precision equipment hot air supply.
2. Operation logic: Change the power supply frequency of the fan (5-50Hz) through a frequency converter. The higher the frequency, the faster the wind speed. Coupled with temperature sensor feedback, adjust the frequency in real time.
3. Core advantages: high temperature control accuracy, low energy consumption, smooth fan operation, and reduced mechanical wear.
2、 Multi speed fan control scheme
1. Applicable scenarios: Scenarios that do not require high wind speed regulation and only require fixed wind speed switching, such as small workshop heating and ordinary ventilation heating.
2. Operation logic: The fan is equipped with high, medium, and low windings, which can be switched through relays or switches to correspond to fixed wind speed parameters.
3. Core advantages: simple structure, low cost, easy maintenance, no need for complex debugging.
3、 Temperature control linkage automatic speed regulation scheme
1. Applicable scenarios: Scenarios that require unmanned and constant temperature operation, such as warehouse constant temperature heating and equipment insulation systems.
2. Operation logic: The temperature controller sets the target temperature, and the temperature sensor monitors the outlet temperature of the air duct in real time. When the temperature is high, the wind speed is automatically increased (faster heat dissipation), and when the temperature is low, the wind speed is lowered (heat gathering and heating).
3. Core advantages: No need for manual intervention, strong temperature stability, avoiding overheating or insufficient temperature.
4、 Precautions for scheme selection
1. Prioritize matching fan types: Both centrifugal fans and axial fans support speed regulation, but the appropriate frequency converter model needs to be selected.
2. Avoid low wind speed: Slow wind speed may cause local overheating of the heater, triggering protection mechanisms or damaging components.
3. Energy saving priority: In long-term operating scenarios, priority should be given to frequency converter speed regulation, which is more energy-efficient than gear control.
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Post time: Dec-10-2025
