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Description:
A backward-curved centrifugal fan is a mechanical device designed to move air or gas by converting rotational kinetic energy into static pressure. Its defining feature is the backward-curved impeller blades, which are angled away from the direction of rotation (typically <90° relative to the plane of rotation). This design ensures that as air enters the fan axially, it is accelerated centrifugally by the rotating blades and exits radially at higher pressure. The backward curvature reduces blade loading at high flow rates, minimizing the risk of stall and improving efficiency. Unlike forward-curved fans, which are prone to overloading, backward-curved fans operate more stably across a wider range of conditions, making them ideal for industrial ventilation, HVAC systems, and dust collection. Their efficiency stems from the gradual deceleration of air within the blade passages, reducing turbulence and energy loss.
Specifications:
Brand Name | YUTEC |
Impeller Material | PA66+GF25 |
Motor Type | BLDC External Rotor Motor |
Type of Protection | IP44 |
Insulation Class | Class B |
Speed Control | 0-10VDC/PWM |
Bearing | Ball Bearing |
Signal Output | FG |
Life Expectance | 50,000 Hours |
Electrical Protection | Locked Rotor Protection |
Reverse Polarity Protection | |
Over Voltage Protection | |
Soft Start |
Competitive Advantage:
Manufacturers offer backward-curved fans in a wide range of sizes and configurations, accommodating diverse applications from small HVAC units to industrial blowers. Customizable blade angles, materials, and motor ratings allow tailored solutions for specific needs, such as explosion-proof designs for oil refineries or corrosion-resistant coatings for marine use. This flexibility ensures optimal performance across industries, from aerospace to food processing.