The frame and fan blades are made of LCP material for high strength and durability.
The mini brushless fan is 15x15x4mm in size, delicate and small, easy to install.
Ultra-compact /...
DC Brushless Fan
Why Choose Us
Competitive High-end Products
The technology of high-end products is complex, the precision requirements are extremely high, and the domestic factory counterparts are not many, so the competitiveness advantage is large.
Quality Guarantee
Efficient supply chain management with automatic production process guarantee price competitive products providing.
12 Years Factory History
A wealth of experience and expertise to understand market needs and technology trends in depth.
Customized Solutions
Customized solutions according to customer needs, support OEM, ODM.
What is DC Brushless Fan
A brushless DC fan uses brushless DC motors (BLDC motor) that have a cross pattern arrangement of four permanent magnets mounted on the sides of the rotor. Unlike brushed DC motors, BLDC motors do not require any commutator or brushes to operate.
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Advantages of DC Brushless Fan
Low Maintenance Cost: DC Brushless Fan don’t use brushes between the rotor and stator and, hence, require low maintenance.
Better Performance: These fans are controlled electronically and control speed and motor torque (force). Thus, these fans deliver highly efficient performance.
Long Life: Due to the absence of brushes, spark generation is impossible. Hence, DC Brushless Fan are considerably more durable than normal fans.
Low Chances of Failure: Unlike regular fans, which use a mechanical switch, DC Brushless Fan use an electronic control system. They have a low chance of failure due to wear and tear.
Greater Torque: DC Brushless Fan continuously deliver maximum torque and ensure smooth performance.
The Structure and Working of a DC Brushless Fan
To know the workings of DC brushless fan, we must first understand the working principle of traditional fans. In regular fans, brushes create friction and provide power to blades. Due to this friction, the motor wears and tears, reducing the fan’s life.
Conversely, in DC brushless fan, there are mainly two components: rotor and stator. A rotor is a rotating part of the fan attached to the magnet on which fan blades are fixed. The stator consists of copper windings that produce magnetic flux upon receiving an electricity supply.
The BLDC motor uses no brushes. Instead, these fans consist of an efficient and long-lasting permanent magnet motor. This motor is controlled through an electronic circuit board comprising a sensor to know the rotor’s position.
The circuit board sends electrical pulses to the motor, as per the rotor’s position, resulting in the blades spinning. This procedure is more efficient than traditional fans, with no friction and energy wastage.
DC brushless fan come with a remote control feature. It lets you change the fan settings even from a distance of 20 ft. The sleep mode and the on/off timer are also helpful. You can set DC brushless fan to decrease or increase the fan speed by one notch every 2 hours. This feature lets you sleep without waking up at night to adjust the fan speed manually.
DC Brushless Fan vs. Normal Fans
DC brushless fan score better than normal fans because of the technology they use. DC brushless fan consume less electricity, have a greater lifespan, and are less noisy than normal fans. Now, let’s dive deeper to know more about the differences between these two fans.
01/
Unmatched Technologies
DC brushless fan use a permanent magnet that regulates the motor, while in normal fans, electromagnets are used. The permanent magnet in DC brushless fan uses less power with no heat loss. It makes these fans more energy-efficient than regular fans, which use high power and are subject to heat loss and poor efficiency.
02/
Power Consumption
Ordinary fans consume around 70-80 watts of power and put no effort into saving energy. In contrast, DC brushless fan use only 28-40 watts of power. Hence, you can save a lot on your electricity bills. A BLDC fan can save around Rs. 1,500-2,000 annually.
03/
Inverter Operations
Ordinary fans burden the inverter, as they consume a lot of energy. They drain your inverter quickly. Conversely, DC brushless fan consume less energy and work three times longer on the inverter, allowing you to use multiple DC brushless fan simultaneously.
04/
Noise Control
Normal fans usually make a humming sound because of friction. In contrast, DC brushless fan are less noisy due to no friction and are known for their silent running.
The difference between DC brushless fan and brushed fan
Structural difference
First of all, there are obvious differences in structure between DC brushless fans and brushed motor fans. The rotor in a brushed motor fan has brushes attached to it, and these brushes create contacts through friction that create the current path. In brushless motor fans, brushes are not required, and the permanent magnets on the rotor are driven by an electronic controller to achieve rotor movement.
Working principle
Secondly, the working principles of brushless fans and brushed motor fans are also different. The rotor of the brush motor fan is controlled by the brush, and the magnetic field is generated by continuously changing the direction of the current on the rotor, thereby driving the rotor to run. The brushless motor fan monitors the rotor position through an electronic controller, and precisely adjusts the current and magnetic field to keep the rotor in the correct position at all times.
Life and reliability
In addition, DC brushless fans have obvious advantages in terms of life and reliability over brushed fans. Since there are no brushes in DC brushless fans, there is less wear and tear on their components. At the same time, the rotor of the brushless motor fan will not be rubbed by the brushes, so there will be no sparks, reducing the risk of fire. This makes the brushless fan more reliable for long-term operation and harsh environments.
DC Brushless Fan Selection Characteristics
Voltage - Rated: Indicates the nominal voltage of the device during normal operation.
Size/Dimension: The physical dimensions of the device. Typically length by height, or diameter.
Width: Typically this indicates the measurement from the front of the housing to the back of the housing.
Air Flow: Characterizes the air volume flow rate a fan can generate. Usually measured under conditions of rated voltage and zero pressure difference between a device’s inlet and outlet.
Static Pressure: Characterizes the maximum air pressure differential a fan can generate at nominal input voltage and zero flow.
Bearing Type: Indicates the technology used to provide mechanical support for a fan’s moving parts.
Fan Type: Describes a fan’s mechanical form factor.
Features: These are different capabilities or properties of the device such as auto restart or a speed sensor.
Noise: Characterizes a device’s acoustic emission levels, as measured under manufacturer-defined test conditions.
Power (Watts): Typically this rating indicates the nominal amount of power you would expect the device to consume during normal operation.
RPM: Characterizes the nominal speed at which a device rotates when rated voltage is applied. Actual speed will vary with application conditions.
Termination: Selection of termination style used to connect the device to a system, such as pin, quick connect, or wire leads.
Ingress Protection: IP (Ingress Protection) ratings such as (IP20, IP65, IP67, etc.) define how likely water and dirt will get into the system. The first number represents dirt and solid contaminants while the second represents water and liquids.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Approval Agency: An indication that the product meets the minimum safety standards of an approving agency. These agencies are either government entities or private third-party labs that protect consumer safety.
Structure of Brushless Dc Fan
Fan Rotor
Including DC brushless fan, which are the core of air flow and the axis of the cooling fan. They are used to support the rolling of the balanced fan blades, the rotor magnetic ring, and the permanent magnets. Magnetic ring.
Fan Stator
Including the supporting spring, separating the bearing to balance the shaft and the bearing, providing high speed, low friction, long-life rotation, buckle ring, fixed and combined rotation of the entire component, motor part, production rotation direction, rotation size, and rotation speed are key.
Outer Frame
Play the role of supporting the fan motor and diversion.
Fan Motor
Including circuit board, control energy consumption and signal access, silicon steel sheet (that is, stator magnet, attached winding coil) to generate magnetic level propulsion switching, silicon steel sheet upper and lower covers, fixed and insulators.
Classification of DC Brushless Fans
Single Ball Bearing Brushless Fans
Single ball bearing is an improvement of the traditional oil-sealed bearing. It is lubricated with ball between rotor and stator with lubricating oil. It overcomes the short life and unstable operation of oil-sealed bearings with extremely limited cost increase. The single ball bearing absorbs the advantages of oil-sealed bearings and double ball bearings. The life of the bearing is increased to 40,000 hours. After adding the ball, the running noise is increased, but it is still less than the double ball bearing.
Rifle Bearing Brushless Fan
As an improvement of traditional oil-sealed bearings, Raffle bearing adopts wear-resistant material to make high oil-containing hollow bearings, which reduces the friction between the bearings and the core, and the Raffle bearing also has a core with reverse spiral groove and oil retaining grooves, so that the oil-containing will form a reverse backward flow when the fan is running to avoid the loss of oil-containing, and thus increase the life of the bearings. By adopting the above structure and parts, Raffle bearing fan can greatly improve the oil content and oil retention capacity, and reduce the noise.
Double Ball Bearing Brushless Fans
Double ball bearing belongs to the higher grade bearing. The bearing has several tiny steel balls around the axis, when the fan page or axis rotation, the steel ball will follow the rotation. Because they are all balls, there is less friction and no oil leaks. Double ball fan advantage is a longer life, about 40,000 ~ 55,000 hours; anti-aging performance is good, suitable for higher speed fan. The disadvantages of double ball bearings are high manufacturing cost and maximum noise at the same RPM level (because the ball bearing friction points are increased by a factor of 2.)
Hydraulic Bearing Brushless Fans
Hydraulic bearing is a technology pioneered by AVC. Again, it is an improvement on the oil-sealed bearing. Hydraulic bearings have a larger oil storage space than oil-sealed bearings and have a unique loop-back oil supply circuit. Hydraulic bearing fans again operate at a significantly lower noise level and have a very long service life of up to 40,000 hours. However, not all AVC radiators use hydraulic bearing fans.
Nano Bearing Brushless Fans
Traditional oil-sealed bearing fans are more worn out during use and have lower reliability when used for long periods of time. Nano bearing effectively overcomes this problem: ceramic shaft by bearing technology adopts nano-sized polymer materials and special additives fully fused, the use of punching mold and sintering process made of ceramic powder, with strong, smooth, wear-resistant and other characteristics. Nano ceramic bearings (NCB) have a strong resistance to high temperatures and are not volatile, which greatly extends the service life of the fan, nano bearings are similar in nature to ceramics, the more they are ground, the smoother they become. According to the test, the average service life of fans with nano-ceramic bearings (NCB) are more than 150,000 hours.
Dc Brushless Fan Knowledge Principle and Internal Composition
Internal Composition
DC brushless fan structure: Mainly divided into rotor, stator, outer frame, motor (motor) and other fractional parts.
●Fan rotor part: Includes the fan blades, which are the core of generating air flow. The cooling fan shaft is used to support the balanced fan blade roll, the rotor magnetic ring and permanent magnet, the key to promote the magnetic level switching speed, the magnetic ring outer frame, fixed magnetic ring.
●Fan stator section: Includes support springs, individual bearing balance shafts, bearings to provide high speed, low friction, long life rotation, snap rings, fixing nodules to rotate the entire part, motor parts, key to producing direction of rotation, speed of rotation.
●Cooling fan outer frame: Support fan motor and deflector.
●Fan motor part: Including circuit board, control energy consumption and signal in and out, silicon steel plate (i.e. stator magnet, upper winding coil) to produce magnetic level advance switching, silicon steel plate upper and lower cover fixed insulator.
The Basics of Dc Brushless Fans
●Fan size: Fan dimensions are generally expressed by the outer length of the fan and the thickness of the product in mm.Fan specifications and model numbers are usually named after the dimensions. For example, 6010 in AD6010 stands for 60*60*10mm.
●Rated voltage: Is the value of the voltage under the rated operation of the fan, the common DC fan voltage is generally 5V, 12V, 24V, 48V, etc..
●Fan speed: Fan rotation speed in rpm (per minute), is an important parameter of the fan. It can bring a large air volume of high-speed table. Manufacturers often standardize their products into ultra-high (U), high (H), medium (M), and low (L) for users to choose according to their own situation.
●Air volume: Quantitative fan capacity indicators. The unit is cubic feet per minute (CFM), but some places mark the unit as cubic feet per minute (CMM), 1CMM = 35.31CFM.
●Wind pressure: The ability of the standard wind flow to overcome wind resistance. Directly affect the effect of ventilation or cooling unit for mm-h2o, some local signs unit for inh2o, 1mmh2o = 0.03939inh2o.
●Noise value: Is an important parameter. The unit is DBA (decibel), although it has nothing to do with the ventilation and cooling effect, but the use of different environments is very demanding.
●Bearing system: This configuration is the soul component of the fan, directly related to the mechanical service life of the product. It is usually categorized into ball bearing and oil bearing.
●Connector: It is an important detail on the fan, often categorized into endless, 2P, 3P, large 4P, etc.
Dc Brushless Fan Circuit
Miniature DC motors are widely used in household appliances, especially in computers. This new DC fan adopts a brushless structure, which overcomes the shortcomings of traditional commutator type (brush) motors such as easy to wear and tear, high noise, and short service life. Several fan electrics drawn according to the physical
Road.
Dc Brushless Fan Principle
Pulse generator based on Hall elements has a simple structure and good performance. The harsh electromagnetic environment of the locomotive electrical system requires the product itself to have strong anti-interference capability.
Brushless DC fans are driven by brushless motors without electromagnetic interference, completely overcoming the shortcomings of electromagnetic interference, high noise, and short mechanical life, and are widely used in applications requiring forced cooling for electronic and electrical workers.
Our Factory
Shenzhen Tengkai Special Electrical CO.,LTD is a professional special motor supplier, China Ministry of Industry and Information Technology designated strategic partner for core components project.
12 years focus on brushless fan, blower manufacturing. Main products include: DC fan, AC fan, EC fan, Blower, the motor. Successively developed 15x4mm, 18x4mm micro cooling fan, 100 thousand rotary motor, 20 thousand pa high pressure blower, 300 thousand pa air pump, ventilator turbine. Our company has a 16 dB noiseless room and a 4-range wind tunnel system, the minimum air volume can be measured to 0.1 CFM and the maximum pressure can be measured to 100,000 pa. The company always takes technology as the guide, independent products as the core, can provide customers with special fan customization and customize heat dissipation system schemes.
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