Efficient and energy-saving fan

The high-efficiency energy-saving fan is a new generation of centrifugal/axial flow fan that adopts optimized pneumatic blade type, precision flow channel design, and high-efficiency impeller. Compared with traditional old models such as 4-72 and 9-19, the fan efficiency is greatly improved, motor energy consumption is reduced, and it is suitable for industrial systems that operate continuously for a long time. It is the mainstream product for energy-saving transformation in environmental protection, kiln, dust removal, and HVAC projects.

1、 Model classification

1. Efficient centrifugal fan (most commonly used in industrial projects) with wing shaped rear curved impeller, optimized aerodynamic model, and low internal losses of the fan. Replace traditional 4-72 Y4-73， Used for dust removal, desulfurization, kiln induced draft, and material transportation.

2. Efficient axial flow fan with adjustable wing blades, high flow rate and low pressure, suitable for factory ventilation, cooling towers, and air coolers.

3. Double suction high-efficiency centrifugal fan for high flow conditions, induced draft fan for sintering and large boilers, and main exhaust fan for large production lines.

Energy saving logic: The combination of improving the internal efficiency of the fan and matching the operating conditions with the frequency conversion system yields the best energy-saving effect; Relying solely on frequency conversion results in low efficiency of the fan body and limited energy-saving space.

2、 Whole machine structure

Steel plate welding optimization snail shell+efficient wing shaped rear curved impeller+air inlet collector+bearing box+common base

Impeller: wing shaped hollow blades with low aerodynamic drag; Wear resistant conditions can be welded with tungsten carbide, while corrosive conditions can be treated with stainless steel material

Current collector: streamlined air inlet to reduce intake vortex loss

Shell: Smooth flow channel, reducing backflow and eddy current losses. Accessories: soft connection, spring shock absorber, imported air damper, variable frequency control cabinet, online monitoring (vibration/temperature)

3、 Core Features

1. The efficiency of the fan body is high: the overall efficiency of the high-efficiency centrifugal fan can reach 82%~89%, while that of the old-fashioned ordinary fan is mostly around 70%. The electricity cost for long-term operation has significantly decreased

2. Wide operating range, maintaining high efficiency even under variable load conditions, suitable for load fluctuations in kilns and dust removal systems

3. Lower aerodynamic noise and minimal airflow disturbance

4. It can balance wear resistance, high temperature resistance, and corrosion resistance, and is suitable for various working conditions such as dust removal, desulfurization, and high-temperature kilns

5. Supporting variable frequency speed regulation, matching air volume and pressure as needed, further reducing energy consumption; Meet energy-saving acceptance, carbon accounting, and energy efficiency evaluation requirements

4、 Applicable scenarios

Bag dust removal, desulfurization and denitrification, kiln induced draft, drying production line, steel plant dust removal, factory ventilation, sewage treatment aeration, and energy-saving renovation project for old fans.

5、 Material selection

Clean room temperature gas: Q235 carbon steel wing impeller

Wear condition with dust: Q345+tungsten carbide overlay welding

Damp/Corrosive Smoke: 304/316L Stainless Steel

6、 Key parameters for selection

1. Airflow and total pressure (based on the actual resistance of the system pipeline network, do not leave too much margin, as too much margin may not save energy)

2. Medium temperature, dust, and corrosive components

3. Continuous operation duration (24-hour production line with the most significant energy-saving benefits)

4. Is it a variable frequency drive

5. Energy efficiency indicators, whether third-party energy efficiency testing reports are required

Selection avoidance pit: Many projects have excessive reserved wind pressure margin for fan selection, which leads to long-term operation in low efficiency areas and greatly reduces energy-saving effects.

7、 Installation points

1. Pipeline optimization: reduce bends, diameter changes, throttling, lower pipe network resistance, and maximize the advantages of energy-saving fans

2. Flexible soft connection for import and export, isolating vibration and not generating additional stress

3. Pipeline independent support, pipeline weight does not pressure fan flange

4. Base matching spring shock absorber

5. Prioritize supporting variable frequency control system and dynamically adjust according to production load

8、 Common faults

1. The selection margin is too large, and the fan operates in a low flow and low efficiency area for a long time, which cannot achieve the expected energy-saving effect

2. Poor pipeline design, high eddy currents and local resistance, which offset the high efficiency advantage of the fan body

3. Dust containing working conditions, accumulation of dust on wing blades, damage to aerodynamic profiles, decreased efficiency, and increased vibration

4. Impeller wear, damaged wing profile, and decreased fan efficiency