Impellers and Blades:
Blades create wind when the motor rotates.
Centrifugal and axial fans detailed by the wheel/impeller chosen.
Centrifugal Blowers:
Blade Angles:
Backwards, forwards, or radial pitches.
Performance:
More blades than axial fans increase performance.
Airflow:
Air flows into the wheel and is expelled powerfully.
Impeller Types and Applications:
Forward Pitch Impellers:
Medium pressure, high airflow.
Efficient but sensitive to dirt and particles.
Used in clean air ventilation and exhaust areas.
Backward Pitch Impellers:
High pressure, high airflow.
Efficient, resistant to dirt, heat, and abrasion.
Used in heat recovery and extract ventilation systems.
Radial Impellers:
High pressure, medium airflow.
Handles dust, gas, and moisture.
Simplest and least efficient.
Used in dirty environments.
Axial Fan Blades:
Blade count ranges from 2 to 20, based on design and requirements.
Mounted on a shaft running through the center.
Air moves through in a straight line.
Types of Blades:
Propeller Blades:
Common in desk and ceiling fans.
Simple, runs at low speeds and moderate temperatures.
Tube Axial Blades:
Propeller mounted inside a tube for higher pressure and efficiency.
Used in general ventilation applications.
Van Axial Blades:
Tube axial with added veins for directed airflow and improved efficiency.
Moves high volumes of air with medium to high pressure.
Used in commercial and industrial applications.
Energy Efficiency:
Axial fans consume less power than centrifugal fans.
No comments:
Post a Comment