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How to reduction the noise of fan in design?
Nov 17 , 2021
The specific noise reduction methods of the fan are as follows: (1) Enhance the aerodynamic load of the cascade and reduce the circumferential speed For the axial cooling fan, strong forward blades are used, and the multi blade impeller is beneficial to increase the aerodynamic load of the cascade. Under the same air volume and pressure, the circumferential speed on the outer circle of the impelle...
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What is the EC fan?
Nov 29 , 2021
The voltage used in electronic products is divided into direct current (DC) and alternating current (AC). Our usual household appliances, such as electric lights, air conditioners, refrigerators, etc., are AC power supply, while we use DC power supply with batteries (such as mobile phones, flashlights, clocks, etc.). In principle, the efficiency of DC cooling fan is higher than that of AC cooling ...
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What is the relationship between starting voltage and cooling fan?
Dec 14 , 2021
With the increasing use of cooling fans, many people are interested in the details of cooling fans. Some people will ask whether the low voltage will affect the cooling fans. Low voltage has no effect on the fan, it will only make the fan rotate at low speed, which can prolong the service life of the fan, but low voltage for a long time may damage the motor. Voltage includes starting voltage and o...
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Principle, advantages and disadvantages of cross flow fan
Dec 15 , 2021
Cross flow fan was first proposed by French engineer Mortier in 1892. The impeller is multi blade, long cylindrical and has forward multi wing blades. When the impeller rotates, the air flow enters the cascade from the open part of the impeller, passes through the interior of the impeller, and is discharged into the volute from the cascade on the other side to form the working air flow. The flow o...
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What are DC Centrifugal Fans?
Dec 21 , 2021
Centrifugal fans are sometimes called radial fans or centrifugal blower fans. They have a motor-driven hub which contains an impeller that discharges air into the housing and then directed to an outlet. The centrifugal fan exhausts air at an angle of 90 degrees (perpendicular to the air inlet). Centrifugal type fans mainly pressurize the air in the blower housing. Compared with axial fans, they pr...
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Axial Fans VS. Centrifugal Fans – What’s the Difference?
Dec 21 , 2021
Applications: Axial cooling fan, which can effectively move a large volumes of air, is usually used to cool small and large spaces. They can cool electronic equipment or computer rooms. They can be used for field cooling of HVAC operations, air conditioning condensers, heat exchange units or industrial systems. Axial flow fan can also be used as exhaust fan. Centrifugal cooling fans, considering t...
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Use of axial fans and blowers
Dec 28 , 2021
In the cooling fan, the DC fan provides variable flow and the AC fan provides constant flow. In addition to AC power supply and DC power supply, cooling fans are usually classified according to the way air enters and exits the fan. In an axial fan, air enters and exits in the same plane. If the airflow leaves in different planes, this is called centrifugal design or blower. Natural convection cool...
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Cooling fan - Speed control systems
Dec 30 , 2021
Brushless DC (BLDC) fans are the most common type used to cool electronic equipment. Many cooling fans now have additional functions which provide greater control the fan speed and operation, thus improving the system performance. Having a fan run constantly even when maximum cooling is not required, does not result in an efficient system and can reduce the service life of a fan. If the average sp...
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