Introduction
Backward Curved Impeller is a high-efficiency centrifugal impeller with a backward-curved blade design, which is widely used in industrial fan systems.
Features
Higher Aerodynamic Efficiency
The impeller adopts a backward-curved blade design, which can achieve a lower operating speed at the same wind pressure, and the energy-saving effect is improved by about 10%–15 % compared with traditional forward blade fans.
Easy to Clean and Maintain
The backward-curved angle and wide blade pitch structure of the backward-curved impeller can effectively prevent dust accumulation and reduce maintenance frequency.
Good Operating Stability
Our products are all G6.3 dynamically balanced and equipped with high-rigidity blade disks and symmetrical blade layouts to ensure low vibration and low noise operation.
Customizable Content
We provide several customized services for Backward Curved Impeller to meet the needs of different industries and application scenarios:
• Size customization: Impeller diameter 200–2500 mm, supports customized blade quantity and flow channel width.
• Material selection: Optional carbon steel, stainless steel, aluminum alloy, titanium alloy, fiberglass, and other materials to meet different temperature, corrosion, and strength requirements.
• Blade structure: Blade inclination angle, curvature, and thickness can be designed as required to improve aerodynamic efficiency or reduce noise.
• Installation interface: Shaft hole size, keyway shape, and flange connection method can be customized according to drawings.
Parameter
|
Air volume |
1000 m3/h~400000 m3/h |
|
Pressure |
1000 Pa~25000 Pa |
|
Diameter |
200 mm~ 2500 mm |
|
Material |
Carbon steel, Stainless steel, Aluminum alloy, Titanium alloy, Fiberglass |
|
Application |
Customized as requested |
Quality Certifications
We hold certifications including ISO9001, ISO45001, CE, UL, and several patents.
Company Profile
Yonghecheng Fan Industry Co., Ltd., founded in 1997, is a professional manufacturer of industrial centrifugal fans with over 20 years of experience in the industry. Located in Suzhou, our factory is equipped with advanced CNC machinery, laser cutting equipment, dynamic balancing systems, and comprehensive testing facilities. We produce over 50,000 units annually, serving industries such as environmental protection, chemical, metallurgy, and HVAC. Certified with ISO9001, ISO45001, CE, and UL, and holding multiple patents, our products are exported to Asia, Europe, the Americas, and other global markets.
Service
Pre-sales
We can provide professional fan technical support during the project design phase to match the best-performing fan.
On sale
We are able to provide fan drawings and performance curves, and make program adjustments according to customer requests.
After-sales
Solutions are available within two hours of receiving the after-sales call.
FAQ
Q: What is a backward curved impeller?
A: A backward curved impeller is a type of fan rotor where the blades curve opposite to the direction of rotation. This design is often used in high-efficiency, high-pressure applications, where it can deliver better performance with lower energy consumption.
Q: How does a backward curved impeller compare to a forward curved impeller?
A: Backward curved impellers are more efficient at generating high static pressure, making them ideal for applications where high resistance is encountered. In contrast, forward curved impellers are better for high airflow at low static pressure but are less efficient.
Q: What industries commonly use backward curved impellers?
A: Backward curved impellers are used in HVAC systems, industrial ventilation, air handling units, dust collection systems, and other high-pressure environments requiring energy-efficient air movement.
Q: What effect do backward curved impellers have on noise levels?
A: Backward curved impellers generally produce less noise compared to other impeller types because their design reduces turbulence and vibration, resulting in quieter operation.
Q: How does a backward curved impeller improve fan efficiency?
A: The backward curved design allows air to flow smoothly, reducing turbulence and energy loss. This results in more efficient performance, especially in high-resistance applications, and helps reduce energy consumption.
Q: What is the optimal operating range for backward curved impellers?
A: Backward curved impellers perform best at moderate to high static pressures and lower airflow rates. They are particularly efficient in systems requiring high-pressure air movement, such as industrial ventilation systems and dust collection units.
Q: What materials are commonly used for backward curved impellers?
A: Common materials include galvanized steel, stainless steel, and aluminum, depending on the specific application. Stainless steel is often preferred for corrosive environments, while galvanized steel is commonly used for general applications.
Q: How do backward curved impellers handle varying airflows?
A: Backward curved impellers are versatile in maintaining performance over a range of airflows. They can handle a variety of airflow conditions, but their efficiency peaks at a specific airflow and pressure point, typically in medium to high-resistance systems.
Q: What maintenance is required for backward curved impellers?
A: Regular maintenance includes cleaning to prevent dust accumulation, ensuring the blades are free from damage or corrosion, checking the balance of the impeller to avoid vibrations, and lubricating the bearings to maintain smooth operation.
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