Size is only 18x18x04mm, but with a high speed of 13000RPM, weighing only 1.8g, lightweight and portable.
Moisture-proof and dust-proof: The product has moisture-proof and dust-proof...
DC Blower
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 Blower
A DC blower is an electric fan that uses direct current (DC) power to circulate air. DC blowers are often used in automotive, industrial and consumer applications, such as air conditioning, ventilation, and cooling systems. Unlike an AC blower, which uses alternating current (AC) power, a DC blower is able to run on a lower voltage and draw less power. This makes them more efficient, quieter, and more reliable than AC blowers. Additionally, DC blowers can be used in environments where AC power is not available.
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![Mini DC Blower Fan]()
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![Mini DC Blower Fan]()
Mini DC Blower FanMini DC blower fan is a compact and portable fan product, employing advanced technology and high-quality materials, suitable for various ventilation and cooling needs in different scenarios,...read more -
![5V DC Blower Fan]()
5V DC Blower FanSize: 20x20x6mmread more
Bearing: Ball bearing
Frame: Plastic(Flammability: UL94V-0)
Impeller: Plastic(Flammability: UL94V-0)
Weight: 6g -
![3010 Blower Fan 24V]()
3010 Blower Fan 24VSize: 30x30x10mmread more
Bearing: two ball bearing , sleeve bearing,HY bearing
Material: Frame: Plastic (Flammability: UL 94V-0), Impeller: Plastic (Flammability: UL 94V-1)
Motor... -
![3010 Blower Fan 24V]()
3010 Blower Fan 24VThe 3010 Blower Fan 24V is a compact fan made of PBT plastic measuring 30x30x10mm and compliant with UL 94 flammability standards, providing an ideal thermal cooling solution for applications...read more -
![30mm DC Blower]()
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![30mm DC Blower Fan]()
30mm DC Blower FanSize: 30x30x15mmread more
Bearing: Ball bearing
Frame: Plastic(Flammability: UL94V-0)
Impeller: Plastic(Flammability: UL94V-0)
Weight: 10g -
![12V DC Blower Cooling Fan]()
12V DC Blower Cooling FanSize: 35x35x10mmread more
Bearing: two ball bearing , sleeve bearing, HY bearing
Material: Frame: Plastic (Flammability: UL 94V-0), Impeller: Plastic (Flammability: UL 94V-1)
Motor... -
![30mm 5V 12V Mini DC Blower Fan]()
30mm 5V 12V Mini DC Blower FanSize: 30x30x7mmread more
Bearing: Ball bearing
Frame: Plastic(Flammability: UL94V-0)
Impeller: Plastic(Flammability: UL94V-0)
Weight: 8.5g -
![Blower Mini DC BFB0412HHA]()
Blower Mini DC BFB0412HHABearing: Ball bearingread more
Frame: Platsic(Flammability: UL94V-0)
Impeller: Platsic(Flammability: UL94V-0)
Weight: 10g
BFB0405LA BFB0412LA BFB0405MA BFB0412MA BFB0405HA... -
![DC Brushless Blower Fan 12V]()
DC Brushless Blower Fan 12VSize: 45x45x10mmread more
Bearing: Ball bearing
Frame: Plastic(Flammability: UL94V-0)
Impeller: Plastic(Flammability: UL94V-0)
Weight: 16g -
![DC Blower Fan 24V]()
DC Blower Fan 24VSize: 50x50x10mmread more
Bearing: Ball bearing
Frame: Plastic(Flammability: UL94V-0)
Impeller: Plastic(Flammability: UL94V-0)
Weight: 16g
Advantages of DC Blower
- Good speed regulation, simple control, optimized high-efficiency fan blade design, ultra-high air volume, high torque motor design.
- DC blower with high wind pressure and air volume, long service life, low noise, and good running stability.
- Low inverter cost, low inverter capacity, high power factor, low loss and high efficiency.
- High-quality bearings, silicon steel sheet, enameled wire, with higher reliability.
Features of Dc Blower
- Normally ordinary fans need lubrication when running, while DC blower has no friction on the impeller when running, no daily lubrication is needed, and the excluded gas is clean and pollution-free.
- DC blower's speed is very fast, the gap between each part is very small, the leakage is very small, the working efficiency is relatively high.
- DC blower by the rotor, impeller, bearings and other components, stable structure, safe operation. And her mechanical friction loss is very small, which is the reason for the long service life of DC blower.
- You can decide the flow size of DC blower by choosing the speed of rotation, which is affected by the speed of rotation.
Whether the Service Life of Dc Blower Is Affected by the Environment
DC blower because of its materials and bearings, it is true that it will be affected by the environment and working pressure, if the DC blower is operating in a high temperature operating environment, it will accelerate the evaporation of the lubricant in the oily bearings, so that the equipment expands to produce conflict, and the coil resistance increases, and falls into a vicious cycle of heating and scalding, which accelerates the speed of the aging of the electronic components. The service life of the DC cooling fan will be greatly reduced.
The dust will make the fan blade mass distribution change, increase conflict, increase wind resistance, affect their own heat dissipation, so that the heat sink and the air between the heat transfer difficulties, resulting in electrostatic discharge damage to components and equipment. Harsh use of the environment may make the effect of the fan greatly reduced, and life greatly reduced. The cooling fan working pressure, it will make the fan speed faster, its bearing wear faster, stator winding coil and electronic components heat more, the life will be relatively shortened.
So the temperature of the surrounding environment on the life of the DC blower is actually quite large, so we usually have to pay more attention to the maintenance of the DC blower, as well as maintenance, in the high temperature of the summer, try to do a good job of mechanical equipment ventilation fan measures, followed by the purchase of high-quality DC blower new products, poor-quality DC blower not only affects the production, but also cause unnecessary trouble.
Is the Dc Blower Dustproof?
For computer cooling fan, because the daily working time is longer, in order to extend the life of the cooling fan, reduce the interference of dust on the cooling fan, so, many customers are required to have dustproof cooling fan. For a little scale cooling fan manufacturers, such as computers commonly used within the 8CM, 9CM cooling fan, to do dustproof, waterproof treatment is possible, the motor will be sealed up on the line, because there is enough space.
For such as the following 10mm, ultra-thin miniature fan such as 20 * 20 * 6, 30 * 30 * 7mm and other specifications, the thickness of itself is only so 7mm, if you also want to fan blades, the motor outside, the middle of this plus a dust cover, will be sealed up all the motor, it is really not easy, because the space is too small.
Dc Blower Specifications
| MODEL No. | RATED VOLTAGE | RATED SPEED | Max.Air Flow | Max.Air Flow | Max.STATIC PRESSURE | Max.STATIC PRESSURE | NOISE |
| SIZE | (V) | (rpm) | (CMM) | (CFM) | (mmAq) | (inchAq) | (dBA) |
| 50x50x10mm | 5~12 | 3500~7000 | 0.05~0.11 | 1.83~4.02 | 2.26~5.28 | 0.09~0.21 | 25.3~45.0 |
| 50x50x15mm | 12 | 3500~6500 | 0.06~0.13 | 2.26~4.45 | 4.55~15.29 | 0.18~0.60 | 26.9~46.7 |
| 50x50x25mm | 12 | 3000~8000 | 0.11~0.30 | 3.84~10.54 | 4.51~28.54 | 0.18~1.12 | 27.7~58.4 |
| 60x60x25mm | 12 | 4000~7000 | 0.18~0.32 | 6.19~11.18 | 9.12~26.85 | 0.36~1.06 | 34.8~48.1 |
| 60x60x30mm | 12 | 4000~6000 | 0.20~0.27 | 7.12~9.65 | 7.32~19.35 | 0.29~0.76 | 40.3~46.2 |
| 75x75x25mm | 12 | 3500~4500 | 0.34~0.43 | 12.15~15.30 | 12.52~19.82 | 0.49~0.78 | 44.2~48.5 |
| 76x76x30mm | 12 | 3000~4000 | 0.27~0.37 | 9.40~13.06 | 7.00~13.81 | 0.28~0.54 | 38.7~46.5 |
| 80x80x28mm | 12~24 | 3500~8000 | 0.37~0.81 | 13.19~28.59 | 15.68~65.09 | 0.62~2.56 | 42.9~59.7 |
| 93x93x25mm | 12 | 2000~3000 | 0.37~0.56 | 12.98~19.86 | 7.71~18.95 | 0.30~0.75 | 38.2~48 |
| 93x93x30mm | 12 | 2000~3000 | 0.26~0.42 | 9.24~14.86 | 8.85~18.56 | 0.35~0.73 | 35.5~48 |
| 97x94x33mm | 12 | 2000~3000 | 0.46~0.68 | 16.26~24.07 | 14.59~21.53 | 0.57~0.85 | 33~41.6 |
| 101x107x25mm | 12 | 2400~3300 | 0.49~0.68 | 17.15~24.11 | 12.09~24.50 | 0.48~0.96 | 44.8~50 |
| 120x120x32mm | 12 | 2000~3000 | 0.83~1.21 | 29.15~42.82 | 13.34~36.93 | 0.52~1.45 | 40~51 |
What Are the Characteristics and Differences Between Dc Blowers and Axial Fans?
DC blowers are usually installed at the inlet and outlet of air-conditioning units, and at the inlet and outlet of boiler blowers and induced draft fans. Installation is relatively complicated. Axial fans are usually installed near the duct or in front of the duct outlet.
Structural Differences
• DC blower is generally composed of collector, motor, impeller, shell and transmission parts (such as spindle, pulley, bearing, belt, etc.). The impeller consists of a disk, blades, wheel cover and shaft disk. The housing consists of a worm plate, side plates and support legs. Blowers can use forward or backward sloping blades for a wider range of air volume and pressure requirements. In addition, the enclosure can be muffled, providing a significant advantage in terms of noise index. The motor and fan are usually connected by a shaft.
• Axial fans generally consist of an impeller, collector, cabinet and motor. The impeller consists of blades and hub, and the cabinet consists of a blower, frame plate and bracket. The blade diameter of an axial fan is limited by the diameter of the housing and the motor is usually located in the fan.
Differences In Airflow And Pressure
•Blowers have high pressure coefficients and relatively low flow coefficients, and can be categorized into high pressure (15,000 ~ 3,000 Pa), medium pressure (3,000 ~ 1,000 Pa), and low pressure (<1,000 Pa) based on pressure rating.
• Axial fans are characterized by low pressure and large flow, and are classified into high pressure (500 ~ 5000 Pa) and low pressure (<500 Pa) according to the pressure level. Low pressure is mainly used for ventilation in general places.
Difference In Principle
• Principle of blower: Gas flows axially into the rotating impeller channel, and is thrown to the outer edge of the impeller under the action of centrifugal force, and is discharged from the air outlet.
• Axial fan principle: Gas axially into the rotating impeller, pressurized and then discharged from the other side of the axial. -Upwind blower
The Main Structural Composition of Dc Blower
Rotor: It consists of shaft, impeller, bearing, synchronous gear, coupling, shaft sleeve and so on.
Impeller: Involute type surface, high volume utilization rate.
Bearing: Near the coupling end as the positioning end of the 3000-type double-row centripetal spherical roller bearings. Near the gear end as the free end of the selection of 32000-type single-row centripetal short cylindrical roller
Bearings to adapt to the axial displacement of the rotor when hot dropsy.
Synchronous Gear: Composed of gear ring and hub, easy to adjust the impeller clearance.
Body: Consists of casing and left and right wall panels. The left and right wall panels and the bearing seats and sealing parts installed in the left and right wall panels can be common to each other.
Base: Small and medium-sized fans are equipped with a public base, and large fans are only equipped with a fan base, which is convenient for installation and debugging.
Lubrication: Gears are immersed and bearings are splash lubricated. Good lubrication effect, safe and reliable.
Transmission Mode: Direct coupling is the main. If the performance specification needs, also can choose the triangle belt wheel speed change. Coupling selection of elastic coupling, can moderate the impact of the and compensate for a small amount of axial deviation. In addition to the electric motor as the driving machine for high flow fans, a turbine or other driving machine can also be used.
Dc Blower Use Operation
The operator must be familiar with these regulations before starting the blower and operate the blower strictly according to these regulations:
1. Check the lubricant level of the oil tank, which should be between the upper and lower limits of the oil dipstick.
2. Notify the power substation to supply power to the blower.
3. Check the control cabinet on the machine, there should be no alarm display, if there is an alarm, identify the cause to eliminate
4. Select "Manual" status. (Touch the "Manual" key with your finger.)
5. Check whether the pressure relief valve is in the open position (pressure relief valve open green light). Check the diffuser should be placed in the minimum opening (diffuser minimum green light).
6. After the above checking and confirming that the blower can be started, press the start button and the blower will enter the startup procedure:
① Auxiliary oil pump pre-lubrication for one minute (auxiliary oil pump operation green light).
② Blower can start running (blower running green light).
③ Pressure relief valve slowly closed (pressure relief valve open green light off, two minutes after the pressure relief valve closed green light).
④ Auxiliary oil pump stop running (auxiliary oil pump running green light off, stop red light on). At this point, the blower starts successfully and can be put into formal operation.
⑤ If the blower fails to start as expected after pressing the start button, the red light of the oil pressure low alarm will be on after one minute and the whole starting process will stop. The cause must be identified and resolved.
Eliminate the alarm to restart.
7. After the blower is started, the opening degree of the diffuser can be adjusted slowly according to the production needs and controlled by the "on" and "off" keys of the diffuser to ensure the necessary wind volume.
8. When the fan is running, the fan must be monitored frequently, paying attention to the fan's current, oil temperature, oil pressure, air inlet vacuum sound, fan, temperature, vibration and other conditions.
If there is any abnormality, we should find out the reason in time and report it to the production department, and if necessary, we can take the measure of emergency stop (use with caution).
For production or maintenance, repair needs, stop a wind turbine operation.
9. Decrease the opening of the diffuser to the minimum (diffuser minimum indicator green light).
10. Touch the fan "stop" button with your finger to start the shutdown program.
The Use of Dc Blower
DC blower is mainly used to solve the problem of heat dissipation of computers, electrical appliances, machines and power supplies, to reduce the temperature of the working environment of the equipment and to prolong the service life of the equipment. There are also some equipment using the fan's air volume, wind pressure to complete the function of the equipment, such as air ball table is the use of fan pressure to make the ball can drift in the ball table surface.
The Types of Dc Blowers and the Principle of Work
DC blowers are divided into two main categories, DC and AC:
DC blower is the use of direct current for its power supply: DC motor has a stator and rotor two major components, the stator has a magnetic pole (winding type or permanent magnet type), the rotor has a winding, after the power, the rotor is also formed on the magnetic field (magnetic poles), stator and rotor poles have a pinch angle between the stator and rotor poles in the stator-rotor magnetic field (between the N-pole and the S-pole) mutual attraction, it is the motor rotates. Change the brush position, you can change the stator and rotor poles angle (assuming that the stator's magnetic poles for the starting side of the angle, rotor poles for the other side of the rotor's magnetic poles pointing to the stator's magnetic poles of the direction is the direction of rotation of the motor) of the direction of the direction, thereby changing the direction of rotation of the motor.
AC cooling fans use alternating current to provide power: Single-phase AC motors have only one winding, and the rotor is squirrel-cage type. When the single-phase sinusoidal current through the stator winding, the motor will produce an alternating magnetic field, the strength and direction of this magnetic field at any time for the sinusoidal law changes, but in the spatial orientation is fixed, so also known as the magnetic field is alternating pulsating magnetic field. This alternating pulsating magnetic field can be decomposed into two with the same speed, the direction of rotation is opposite to each other rotating magnetic field, when the rotor is stationary, these two rotating magnetic field in the rotor to produce two equal size, opposite direction of the torque, making the synthetic torque is zero, so the motor can not rotate. When we use an external force to make the motor to a certain direction of rotation (such as clockwise rotation), then the rotor and clockwise rotation direction of the rotating magnetic field between the cutting line of magnetic force movement becomes smaller; rotor and counterclockwise rotation direction of the rotating magnetic field between the cutting line of magnetic force movement becomes larger. This balance is broken, the total electromagnetic torque generated by the rotor will no longer be zero, the rotor will rotate in the direction of the push.
Performance Parameters of Dc Blower
The main indicators of the blower are:
Air Volume: How many cubic meters of wind are generated per minute when the blower is working, the unit is M3min or CFM.
Wind Pressure: The pressure generated when the fan works, its unit is mmH20
Noise: The sound produced when the fan works, mainly wind noise, electromagnetic noise, bearing noise. The unit is dB-A
Lifespan: The life of a fan is considered to be expired when the fan fails to work and the rotational speed is lower than 85% of the rated speed. Fan life is generally referred to as its average life. Ambient
Temperature: The temperature of the location where the fan is working, the ambient temperature has a great influence on the life of the fan. High temperatures shorten the life of the fan, while low temperatures prevent the bearing grease from working.
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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