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High pressure centrifugal fan designed for industrial ventilation systems with high static pressure requirements and complex duct applications

Your Leading High Pressure Centrifugal Fan Manufacturer in China | Aosun

Aosun high pressure centrifugal fan is designed to deliver stable airflow in ventilation systems with high resistance, long duct runs, filtration systems and industrial applications.

Features of Aosun High Pressure Centrifugal Fan

  • It is specifically designed to maintain airflow performance in high-resistance systems.
  • The optimized impeller structure can stably generate airflow while ensuring reliable operating performance.
  • Suitable for applications where airflow requirements need to be maintained even if there is pressure drop in the system.
  • Using sturdy materials and components, it can achieve continuous operation in harsh environments.
  • It can be customized according to airflow, pressure, voltage, installation design, and OEM requirements.

Aosun | Professional High Pressure Centrifugal Fan Manufacturer in China

Aosun is a professional high pressure centrifugal fan manufacturer in China, providing reliable ventilation solutions for industrial, HVAC and engineering applications. With extensive experience in fan manufacturing, we support customers with customized solutions based on different airflow, static pressure, motor and installation requirements.

Our high pressure centrifugal fans are developed for demanding systems requiring stable airflow under high resistance conditions, including long duct networks, filtration systems and industrial ventilation projects. From product design and performance testing to OEM customization and production support, Aosun helps distributors, contractors and brands build reliable ventilation product ranges with consistent quality and long-term supply capability.

Stainless Steel Centrifugal Fan is made of stainless steel, which has excellent rust-proof and corrosion-resistant properties.
Stainless Steel Centrifugal Fan

It is made of stainless steel, which has excellent rust-proof and corrosion-resistant properties.

Backward Curved Centrifugal Fan

It is equipped with a backward-curved impeller, which can provide reliable efficiency in corrosion-resistant exhaust applications.

Double width Centrifugal Fan
Double width Centrifugal Fan

It adopts a dual air inlet design, which can generate a large volume of airflow. It is suitable for heavy industrial HVAC and process exhaust projects.

EC High Pressure Centrifugal Fan

It is equipped with an EC motor, which enables variable frequency operation and achieves high energy efficiency in high-resistance duct systems.

What is a High Pressure Centrifugal Fan?

High pressure centrifugal fan is specifically designed for high static pressure industrial scenarios, which features high static pressure, stable airflow, and continuous operation. Traditional exhaust fans and inline fans are not suitable for high resistance operating conditions. Forced use will lead to a significant attenuation of air flow, insufficient supply/exhaust capacity, and fail to meet the continuous industrial process and environmental ventilation standards.

High pressure centrifugal fan structure diagram illustrating impeller, motor, volute casing and airflow direction for industrial ventilation applications

Why you Need a High Pressure Centrifugal Fan?

Better Performance in High Resistance Systems

In high resistance environments, the airflow delivered by traditional axial flow fans and ordinary exhaust fans will decrease as the pipeline resistance increases, failing to meet the stable air volume requirements of industrial systems. In contrast, high pressure centrifugal fans, through optimizing the design of the impeller and casing, can maintain stable and continuous airflow output under high static pressure conditions, and effectively resist the interference from pipeline and equipment resistance.

Suitable for Complex Duct Systems

Most industrial engineering and HVAC projects are equipped with long distance ducts, multiple pipe elbows, built-in filters and air throttling valves, forming a highly resistant and complex air system. This high-pressure centrifugal blower is specifically designed for such complex scenarios, and can fully adapt to various pipe structures, avoiding air pressure loss and airflow attenuation in the system, and ensuring the overall operational efficiency of the ventilation system.

Reliable for Continuous Operation

Due to the characteristics of industrial equipment’s long-term continuous operation, harsh on-site environment and high-load operation, the high-pressure centrifugal blower adopts an industrial-grade structural design and a stable power supply system. Even under long-term operation and complex industrial conditions, it can still maintain stable performance indicators, meeting the all-weather continuous operation requirements of industrial production and engineering systems.

Appilication of High Pressure Centrifugal Fan

Industrial Ventilation

Satisfy the ventilation and air exchange requirements of factory workshops, production areas and industrial sites. Effectively solve the problem of poor air circulation caused by long-distance ducts and obstacles of on-site equipment. Compared with standard ventilation fans, high pressure centrifugal blowers are better suited for systems with higher resistance requirements.

Dust Collection System

Used in conjunction with industrial dust collection filters, dust collectors and purification equipment, it can effectively counteract the wind resistance caused by filter blockage, pipe bending and dust accumulation, ensuring that the dust collection system continuously and stably generates negative pressure suction, and guaranteeing the normal operation of industrial dust collection and environmental purification equipment.

HVAC System

Suitable for large duct systems in commercial buildings, industrial parks and central HVAC systems. Centrifugal fan blower can adapt to long-distance gas supply and multi-turn pipe layouts, solve the problem of insufficient air pressure of traditional HVAC fans in large-space duct systems, and achieve uniform and stable air supply of the entire system.

Boiler and Combustion Air System

Provide stable forced air supply and smoke exhaust support for boilers and combustion equipment. Meet the requirements of the combustion system for high static pressure operation. Provide stable combustion air supply for boilers and thermal equipment, and adapt to the high-resistance flue and pipe environment of thermal equipment.

Equipment Cooling

Suitable for mechanical ventilation, equipment shell cooling, and industrial heat dissipation scenarios. High pressure centrifugal fan blower overcomes the internal structural resistance of mechanical equipment, enabling continuous air circulation and heat exchange for high-power operating equipment, and preventing equipment failures caused by excessive heat accumulation.

High Pressure Centrifugal Fan Selection Guide

Infographic explaining how to select a high pressure centrifugal fan based on airflow requirements, static pressure, fan performance curve and operating conditions

Required Air Volume

When selecting a fan, you should not only refer to the maximum air volume. You need to calculate the actual required air volume for the system based on the ventilation frequency and the size of the space, and reserve a reasonable margin. Avoiding blindly selecting high air volume models, which leads to energy waste and system mismatch. You should pay attention to matching the stable operating air volume of the fan with the actual system requirements.

Static Pressure Requirements

Static pressure is the core difference between high-pressure centrifugal fans and ordinary fans, and it is also the main basis for industrial system selection. When determining the required static pressure, you need to conduct comprehensive calculations and additions based on the actual system conditions, including the total length of the ventilation duct, the number of bends, the resistance of built-in filters and grilles, and the resistance of the air valve. Ensure that the rated static pressure of the fan can completely overcome the overall resistance of the system, thereby ensuring stable air supply effect.

Fan Curve

You also need to pay attention to the matching of the fan operation curve. The correct high pressure centrifugal fan model should operate stably near the system demand point on the fan performance curve, achieving medium load, maximum operating efficiency, and minimum energy consumption. Avoid causing deviations between the fan operation point and the system requirements due to blind selection, which will affect the overall ventilation effect.

Operating Environment

You need to select the appropriate fan configuration based on the on-site operating environment conditions.For high temperature flue gas exhaust and high temperature equipment cooling scenarios, high temperature resistant structure design is required. For humid, dusty, and corrosive industrial environments, you can customize dust-proof and moisture-proof enclosures to extend the lifespan of the fan.

What makes a centrifugal fan high pressure?

Optimizing the volute flow channel, enhancing the performance of the impeller, and combining with a high-power motor, the fan can generate higher static pressure. Compared with ordinary fans, its design goal is not to achieve the maximum air volume, but to maintain stable air supply even under high resistance conditions, and to be suitable for long pipelines, dust removal, boilers and other high-resistance industrial systems.

What materials are commonly used for high pressure centrifugal fans?

The commonly used materials mainly include ordinary steel, galvanized steel plate, and stainless steel. Ordinary steel has a moderate cost and is often used in conventional non-corrosive industrial ventilation scenarios. Galvanized steel plate has good rust prevention ability and is suitable for ordinary humid environments. Stainless steel is mostly used in working conditions with corrosive media, high temperatures, and dust erosion.

Can a high pressure centrifugal fan be used outdoors?

Yes, but it cannot be used directly outdoors. The outdoor environment will encounter various weather conditions. You should choose motors and complete machines with outdoor protection grades, apply anti-rain and anti-corrosion coatings, and install rainproof covers. If the environment contains salt fog and high humidity, priority should be given to using galvanized or stainless steel materials.

Does a high pressure centrifugal fan require regular maintenance?

Yes. High pressure fan is mostly used in industrial continuous operation scenarios. Regular maintenance is necessary to ensure stable pressure and air volume. Routine maintenance includes cleaning the accumulated dust , checking for loosening of fasteners, observing the operation of the motor, and inspecting the bearings.

What will cause a high pressure centrifugal fan to lose airflow?

Common causes include: The actual resistance of the system far exceeds the rated static pressure of the fan. Air leakage in the duct, blockage of the piping, and clogging of the filters. Motor failure, insufficient rotational speed. Incorrect installation, with the air intake and exhaust being blocked.

Can a high-pressure centrifugal fan be used with a speed control controller?

Yes, it can be used in combination with a speed control controller to achieve variable frequency speed regulation. AC motors can be equipped with frequency converters, and EC motors have their own speed control function. Speed adjustment can change the air volume and static pressure of the fan, adapting to changes in system conditions. Please note that the controller should match the voltage and power of the motor.

Can high pressure centrifugal fans be installed vertically or horizontally?

Yes. Horizontal installation is the most common type. When the high pressure centrifugal fan be installed vertically, you should make sure the bearings can withstand vertical loads. In addition, ensure that a stable support and shock absorption measures are in place. When selecting and ordering, you need to inform us of the installation method in advance. Some models do not support vertical installation.

How does impeller design affect centrifugal fan performance?

The design of the impeller determines the static pressure, air volume and overall efficiency of the high-pressure centrifugal fan. The backward curved centrifugal fan. has low energy consumption, high operating efficiency and good durability. The forward curved centrifugal fan has a larger air volume at the same size, but has relatively higher noise. The angle of the impeller blades, the number of blades and the diameter of the impeller all affect the static pressure and air volume output of the fan, and are the core components of the performance of the high pressure centrifugal fan.

What accessories can be installed with a high pressure centrifugal fan?

Common optional accessories including shock-absorbing pad, shock absorber, flexible joint, flange, carbon filter, silencer, inlet and outlet of the wind speed controller, bracket base, check valve. These accessories are used to  protect the fan, adapt to the duct system, enhance the stability of the entire ventilation system, reduce vibration and noise.

What information should I provide when requesting a centrifugal fan quotation?

①Required air volume. ②Static pressure required by the system. ③Power supply parameters.  ④Material requirements.⑤Whether any accessories are needed as a complement.⑥ Operating environment (indoors/outdoors). Provide the above parameters, so that we can provide you with accurate selection and quotation.

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