Customized centrifugal fan

Product Description

A centrifugal fan is a mechanical ventilation device that uses centrifugal force to accelerate and transport gas. Its core working process is as follows: a motor drives an impeller to rotate at high speed; gas enters the impeller center through the axial inlet, is accelerated by centrifugal force, and is thrown radially out. After entering the volute, kinetic energy is converted into pressure energy, and the gas is finally discharged at a higher pressure. Unlike axial fans, centrifugal fans generate airflow perpendicular to the inlet direction, overcoming higher system resistance, making them particularly suitable for piping systems containing elbows, valves, filters, and other resistance components.

Customized centrifugal fans are non-standard fan products specially designed and manufactured according to specific customer operating parameters, such as: medium composition, temperature, dust content, corrosiveness, required air volume, and air pressure. Their value lies in breaking the limitation of "using standard models as a makeshift solution," achieving precise matching between fan performance and system requirements, and avoiding the energy waste of "overpowered power." With high pressure output capacity, wide performance coverage, and flexible structural design, customized centrifugal fans have become an irreplaceable core power unit in industrial ventilation, environmental dust removal, and HVAC fields.

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Product Applications

Customized centrifugal fans have a wide range of applications, covering industrial production, building ventilation, environmental protection, and many other fields. The main application areas are as follows:

Industrial Ventilation: In production workshops of industries such as steel, petrochemicals, chemicals, and power, centrifugal fans provide powerful ventilation capabilities, regulate workshop temperature and humidity, and exhaust harmful gases and dust, ensuring worker health and safety. Specific scenarios include:

Factory and mine workshop ventilation to improve the working environment

Gas transport and process air supply in the metallurgical, cement, and building materials industries

Grain storage ventilation to remove moisture and heat from grain piles and prevent mold growth

Dust Removal and Waste Gas Treatment: Centrifugal fans are the core power equipment for dust removal systems and waste gas treatment devices. Working in conjunction with bag filters, cyclone dust collectors, and other equipment, they draw dust-laden gas into purification devices or discharge treated clean gas into the atmosphere. Typical applications include:

Dust removal in steel mill ore bins and cement kiln tails

Gas transport in VOCs waste gas treatment systems

Boiler flue gas emission and desulfurization/denitrification systems

Odor removal and ventilation in wastewater treatment plants

HVAC systems: Centrifugal fans are widely used for air conditioning and ventilation in commercial buildings, office buildings, hospitals, clean rooms, etc. Specifically, this includes:

Supply and return air in AHUs (Air Handling Units)

Uniform air supply in cleanroom and FFU (Fan Filter Unit) systems

Data center server cooling

Air filtration and purification in laboratories and operating rooms

Boilers and thermal energy systems: In thermal power generation and industrial boilers, centrifugal induced draft fans are used to extract flue gas from the furnace, maintain negative pressure in the furnace, and ensure the safe and stable operation of the combustion system; the supply fan provides the necessary air for combustion. Common models include the Y5-54 boiler centrifugal induced draft fan and the G/Y4-68 boiler centrifugal fan.

Special Applications: For special environments such as high temperature, corrosion, and explosion-proof conditions, customized centrifugal fans can be designed with appropriate materials and structures to meet stringent requirements. Specifically, this includes:

High Temperature Resistance Design: Capable of conveying temperatures up to 950℃ or even higher, using materials such as stainless steel and nickel-based alloys.

Corrosion Resistance Design: Utilizing corrosion-resistant materials such as 304/316L stainless steel, fiberglass (FRP), or titanium alloys, suitable for conveying acid and alkaline gases.

Explosion-proof Design: The impeller is made of aluminum alloy, and the motor is equipped with an explosion-proof design, suitable for flammable and explosive environments such as chemical workshops and underground coal mines.

Product Features

The core advantage of customized centrifugal fans lies in the performance matching and comprehensive benefits brought by "tailor-made" design.

1. Precise Performance Matching, Avoiding Resource Waste

Standard fans cannot accurately match actual operating parameters, either resulting in an oversized model causing energy waste ("overpowering the size of the machine") or insufficient performance leading to low system efficiency. Customized design precisely determines the impeller diameter, speed, and motor power based on parameters provided by the customer, such as medium temperature, density, dust content, and system resistance curve, ensuring the fan always operates within its highest efficiency range. The fan's total pressure must equal the system's total resistance with a 10%–20% margin; customization precisely achieves this goal.

2. Flexible Impeller and Blade Design

Centrifugal fans can be categorized into three main types based on blade type, allowing for flexible selection during customization to adapt to different operating conditions:


3. Diverse Material Options for Harsh Environments

Centrifugal fans can be customized with a variety of materials to suit different gas corrosiveness, temperature, and dust content:


4. High Efficiency, Energy Saving, and Low Noise Operation

High Efficiency: The backward-curved impeller design, combined with CFD flow field optimization, achieves a total pressure efficiency of over 85%, significantly reducing operating energy consumption. Centrifugal fans driven by EC motors can achieve a power utilization efficiency exceeding 70% in HVAC systems, saving up to 50% more energy compared to traditional solutions.

Low Noise: Through impeller dynamic balancing correction (dynamic balancing level up to G2.5) and optimized aerodynamic design, noise is 5–8 dB(A) lower than traditional fans. Customized solutions can further reduce operating noise by adding silencers or sound insulation materials.

Long Lifespan: The impeller undergoes rigorous dynamic balancing correction, ensuring smooth operation and low vibration. Combined with high-quality maintenance-free bearings, the design life can reach over 40,000–80,000 hours.

5. Intelligent Control and Protection Functions

Modern customized centrifugal fans can be configured with multiple control and protection functions:

Stepless Speed ​​Regulation: Supports stepless speed regulation via 0–10V/PWM signal or RS485 Modbus communication protocol.

Multiple Protections: Features stall protection, overcurrent protection, overtemperature protection, and soft start to prevent equipment damage.

Intelligent Networking: High-end models have built-in RS485 network communication, supporting large-scale fan group control management.

6. Flexible Structure and Installation Methods

Customized fans offer various drive methods and installation options:

Drive Methods: Direct drive, belt drive, coupling drive

Inlet/Outlet Direction: Multiple angles selectable from 0° to 270°

Installation Methods: Floor mount, ceiling mount, horizontal or vertical installation.

Technical parameters