DC Blower Fan
Company Profile
Established in 2003, Shenzhen Amore Industrial Co., Ltd (AMR) is a company devoted in the production of AC/DC axial fans, motors and SPD. There are 4 divisions under the company, namely: Electronic Cooling Division, Surge Protective Device Division, Motor Division, and Y.S. TECH Agency Division. AMR products all have been certified by CCC, CE, UL, TUV and etc. The factory has passed ISO9001, ISO14001, QS9000 and other certifications.
Why Choose Us
Quality Control
Based on the principle of quality first and customer first, AMR employs advanced technology and continuously improves product quality to meet the needs of customers. Our clients include Huawei, ZTE, Emerson, China Mobile, China Unicom, China Telecom, Southern Power Grid, as well as APC, Delta, Eltek and other famous customers both at home and abroad.
Professional Team
Our target is to provide excellent quality and professional services. In the ever-changing global economic environment, AMR endeavors to work with customers for a better future.
Our Factories
AMR has 3 factories in Shenzhen. The factories have set up excellent management system and boast of most professional teams armed with advanced production and experimental equipment and develop cutting-edge technologies.
Our Certificate
Passed ISO9001、ISO13485 quality management system certification.
The series products have passed UL、CE、 3C international certification.
What is DC Blower Fan？
DC Blower Fan, often referred to as centrifugal or radial fans, is a type of fan that employs direct current (DC) power to create a high-pressure, low-volume air flow. These fans work by providing a centrifugal force that forces air outwardly radially around a rotating wheel with blades that revolves around a stationary housing. Industrial applications requiring a high-pressure air flow frequently employ DC air exhaust blower fans, as do electronic cooling systems, HVAC systems, and electronic cooling. They come in a variety of shapes and sizes, including single and double inlet fans, to fit a range of applications.
Benefits of DC Blower Fan
Energy Efficiency
One of the primary advantages of DC blowers is their energy efficiency. Unlike traditional AC fans, which operate on alternating current, DC blowers consume less power while delivering comparable or even superior airflow. This increased efficiency translates to lower energy costs and reduced environmental impact, making DC blowers an attractive option for energy-conscious consumers and businesses alike.
Variable Speed Control
DC blowers offer precise control over airflow thanks to their variable speed capabilities. By adjusting the voltage or using pulse-width modulation (PWM), users can fine-tune the speed of the blower to meet specific ventilation requirements. Whether it’s maintaining optimal airflow in a confined space or adjusting ventilation levels based on changing environmental conditions, the flexibility afforded by variable speed control enhances the overall effectiveness of the ventilation system.
Quiet Operation
Another notable benefit of DC blowers is their quiet operation. Compared to traditional cross-flow fans or centrifugal blowers, which can produce significant noise levels, DC blowers operate with minimal vibration and noise. This attribute is particularly valuable in environments where noise reduction is essential, such as residential spaces, offices, or medical facilities. The ability to maintain a quiet and comfortable environment without compromising ventilation efficiency is a compelling advantage of using DC blowers.
Compact Design
DC blowers are characterized by their compact and lightweight design, making them ideal for applications where space is limited. The 50x50mm form factor, in particular, offers a balance of performance and size, allowing for easy integration into various ventilation systems, including HVAC units, electronic enclosures, and automotive applications. The compact nature of DC blowers enables greater flexibility in system design and installation, ensuring optimal airflow in diverse settings.
Type of DC Blower Fan
Axial fan
An axial fan blower usually comes in a straight form factor with a round body. The name of this blower comes from the working principle. Since it moves air along the axis of the fan blades, it is known as an axial fan.
Centrifugal fan
A centrifugal fan is similar to a blower fan but works slightly differently. It is a mechanical device that moves air perpendicularly to the axis of fan impellers and does not use regular fan blades. Instead, it uses impellers that cover more surface area due to the curved design and pushes air farther away due to more centrifugal force.
Frameless fan
Some applications require a fan but don't have enough space to fit the whole frame. The small blower or centrifugal fans don't make the right choice. That's where the frameless fans make a great choice.
Delta fan
The last one is a delta fan, and it is more like an axial fan but comes in a boxed frame. That's why it is most commonly used in areas where good airflow is required, along with structural integrity and reliability.
The frame securely holds everything into place, including the motor and blade. These small fans can operate at high levels providing optimal cooling performance.
Power Efficiency and Control Techniques for DC Blower Fans
PWM Control
Pulse-width modulation (PWM) is a technique commonly used to control DC blower fans’ speed and reduce their power consumption while still maintaining optimum performance levels.
Brushless DC Motors
DC blower fans with brushless DC motors offer higher power efficiency as they have fewer moving parts and produce less heat, resulting in lower power consumption.
Variable Speed Control
DC blower fans with variable speed control can adjust the fan speed based on the temperature or load requirements, resulting in reduced energy consumption.
Aerodynamic Design
In Xie Heng Da axial flow fan factory, Aerodynamic design of the fan blades can affect the power efficiency of DC blower fans. By optimizing the shape and pitch of the blades, the fans can provide higher airflows while consuming less power, leading to increased efficiency.
How Does a DC blower fan work?
Centrifugal Force Amplification
DC blower fans employ a centrifugal mechanism to generate airflow. The key differentiator is their curved blade design, which allows the fan to direct air perpendicular to the shaft, creating a centrifugal force that amplifies the airflow.
Airflow Direction and Pressure
In contrast to axial fans that move air parallel to the shaft, DC blower fans intake air from the center and expel it radially. This design enhances their ability to generate higher air pressures, making them well-suited for applications that demand increased pressure capabilities.
Compact and Efficient
The compact design of DC blower fans is advantageous in installations with limited space. They are particularly effective in situations where a combination of airflow and higher pressure is required, such as industrial ventilation systems and electronics cooling.
Variable Speed Control
Our DC blower fans are designed for efficient variable speed control. This adaptability enables users to fine-tune the airflow according to specific cooling demands, resulting in optimized performance and energy savings.
Application of DC Blower Fan
One of the most common applications of DC blowers is in cooling systems for electronics, appliances, and machinery. 20x20x6 mm DC blowers, with their compact size and high-pressure airflow capabilities, are ideal for cooling small electronic components such as circuit boards, microprocessors, and power supplies. These miniature blowers play a crucial role in dissipating heat generated during operation, ensuring optimal performance and reliability.
DC blowers are also widely used in ventilation systems for buildings, vehicles, and confined spaces. In automotive applications, DC blowers are employed in HVAC systems to provide fresh air circulation and regulate cabin temperature. Their compact size and efficient airflow make them suitable for integration into tight spaces within the vehicle.
In industrial settings, DC blowers find applications in a wide range of equipment and machinery, including printing presses, laser cutting machines, and welding equipment. These blowers are used to cool critical components such as motors, transformers, and electronic controls, preventing overheating and extending equipment lifespan.
Beyond traditional cooling and ventilation systems, DC blowers are also utilized in specialty applications that require precise airflow control and performance. For example, in medical devices such as respiratory ventilators and anesthesia machines, DC blowers play a crucial role in delivering precise airflow rates and pressure levels to patients.
The Difference Between DC Blower and Axial Flow Fan
DC blower is generally installed at the inlet and outlet of air conditioning unit, boiler blower, induced draft fan and other positions, and the installation is relatively complicated; axial flow fan is often installed beside the air duct or at the front end of the air duct outlet.
1. DC blower is generally composed of impeller, casing, collector, motor and transmission parts (such as main shaft, pulley, bearing, V-belt, etc.). The impeller is composed of wheel disc, blades, wheel cover and shaft disc. The casing is composed of volute, side plate and support leg. The blower can use forward or backward blades, and the requirements for air volume and air pressure are more adaptable. Moreover, the cabinet can be treated with silencer, which has obvious advantages in noise index. The motor and fan are generally connected by shaft.
2. Axial flow fan is generally composed of impeller, casing, collector and motor. The impeller is composed of blades and hub, and the casing is composed of wind tube, frame plate and bracket. The blade diameter of the axial flow fan is limited to the diameter of the outer shell, and the motor is generally inside the fan.
1. The blower has a high pressure coefficient and a relatively low flow coefficient. According to the pressure, it is divided into high pressure (15000~3000Pa), medium pressure (3000~1000Pa), and low pressure (<1000Pa).
2. The axial flow fan has the characteristics of low pressure and large flow. According to the pressure, it is divided into high pressure (500~5000Pa) and low pressure (<500Pa). Low pressure is mainly used for ventilation in general places.
1. Principle of blower: The airflow flows axially into the rotating blade channel, and is thrown to the outer edge of the impeller under the action of centrifugal force and discharged from the air outlet.
2. Principle of axial flow fan: The gas enters the rotating blade channel axially and is pressurized and then discharged axially from the other side.
What Kind of Configuration Does the DC Blower Have?
Shell material
Die-cast aluminum, the same as the aluminum of Mercedes-Benz wheels. Compared with ordinary aluminum alloy, die-cast aluminum is stronger and lighter than iron fans.
Motor performance
Brushless DC motor with aluminum housing rate, listed on the market DC 5V, DC 12V, DC 24V, protection grade IP55, its advantage is that ordinary brushed DC motors can not reach the technology, it is favored by customers at home and abroad.
Fan oil seal
Oil seal is made of fluorine rubber, which can withstand -25°C to 300°C. Compared with general oil seals, the lip temperature is 20~50℃ higher than the temperature of the working medium. The performance is more stable, maintenance-free, and the service life is longer.
How to Maintain the DC Blower?
The discharge electrode of the DC blower does not require a ground electrode, and the discharge electrode is composed of separate positive and negative discharge needles. When there is no external air supply (such as a fan, compressed gas, etc.), the DC static elimination distance is longer than the AC type static elimination. In the case of outside wind, the elimination distance mainly depends on the static elimination equipment. The structure, air volume, and strength of the high-voltage power supply. Since the discharge needle will be contaminated after long-term use, it will directly affect the static elimination performance and ion balance. Therefore, the static elimination electrode part should be cleaned regularly during use. In particular, the discharge needle of the DC blower is easily contaminated, and the degree of wear of the positive and negative discharge needles is different, and regular ion level detection is required. When the discharge needle is severely worn, the discharge needle should be replaced in time.
The ink volume of the DC blower is very small, because only the bearing and gear pair have mechanical contact on the selected material, and the rotor, housing, and ring gear have sufficient mechanical strength. Safe operation and long service life. Then, in use, as the pressure changes, the flow rate changes very little. But the flow rate varies with speed. Therefore, the voltage range is very wide, and the flow rate can be selected to meet the needs by rotating speed. Furthermore, the speed of the DC blower is high, the gap between the rotor and the rotor, and the rotor and the body are small, so there is less leakage and higher volumetric efficiency.
Our Factory
Our target is to provide excellent quality and professional services. In the ever-changing global economic environment, AMR endeavors to work with customers for a better future.Based on the principle of quality first and customer first, AMR employs advanced technology and continuously improves product quality to meet the needs of customers. Our clients include Huawei, ZTE, Emerson, China Mobile, China Unicom, China Telecom, Southern Power Grid, as well as APC, Delta, Eltek and other famous customers both at home and abroad.
FAQ