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Focusing on developing high-performance and long-lasting cooling fans
How to choose the right cooling fan or other cooling fans
Time:
2022-09-23 14:21
Source:
www.gdxxdz.cn
The design engineers of all motor automation equipment and electronic products that require the use of cooling fans for heat dissipation must determine the air volume required for a specific system's heat dissipation, and the required air volume depends on understanding the system's power consumption and whether it can carry enough heat to prevent overheating of the system. The fact shows that the service life of the system will decrease due to insufficient cooling system, so design engineers should also understand that the sales volume and price of the system may decrease because the service life of the system does not meet the user's expectations.
To choose the correct ventilation component, the following objectives must be considered:
Best air flow efficiency
The smallest suitable size
Minimal noise
Minimum power consumption
Maximum reliability and service life
Reasonable total cost
Selecting a cooling fan or other fan through the following steps can help you achieve the above goals. Cooling fan
Firstly, it is necessary to know the total cooling demand. To understand the total cooling demand, there are three points
1. Heat that must be converted (i.e. temperature difference DT)
2. Watts to offset conversion heat (W)
3. Air volume required to remove heat (CFM)
The total cooling demand is crucial for the effective operation of the system. Efficient system operation must provide ideal operating conditions so that all components within the system can perform their maximum function and have the longest service life.
Secondly, by understanding the total cooling demand, the required air volume for the equipment can be obtained using the following method.
1. Calculate the heat generated inside the equipment.
2. Determine the allowable temperature rise range inside the equipment.
3. Calculate the required air volume from the equation.
If the internal heat dissipation of the system equipment and the total allowable temperature rise are known, the required air volume for cooling the equipment can be obtained
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The working principle of cooling fan
Using the principle of electromagnetic induction, the fan uses the Houle induction module as a synchronous detection device, controls a set of circuits, switches the winding electrification sequence, and generates a rotating magnetic field, a mechatronics engineering fan for electronic commutation. The cooling fan has obvious advantages in the aspects of wide speed range, light weight, environmental protection and energy saving, controllability, reliability, environmental endurance and economy, etc. , dominate. The cooling fan is powered by direct current. The DC motor is composed of stator and rotor. The stator has a magnetic pole (winding type or permanent magnet type) , while the rotor has a winding, after the staff electrified it, the rotor also forms a magnetic field (magnetic pole) , there is an angle between the stator and the rotor magnetic pole, in the stator and rotor magnetic field (N-pole and S-pole) under the mutual attraction, is the motor rotation. The cooling fan technician told us to change the position of the brush, you can change the direction of the rotor-stator magnetic pole angle (starting with the stator's magnetic pole, the rotor's magnetic pole is on the other side, and the direction from the rotor's magnetic pole to the stator's magnetic pole is the direction of the motor's rotation) , after this operation, the rotation direction of the motor can be changed.
What are the maintenance methods for DC cooling fans?
Store and maintain in the correct way to extend the service life of the DC cooling fan. The following high-quality fan manufacturers will provide you with detailed maintenance methods for DC cooling fans:
How to choose the right cooling fan or other cooling fans
The design engineers of all motor automation equipment and electronic products that require the use of cooling fans for heat dissipation must determine the air volume required for a specific system's heat dissipation
What is the difference between a DC fan and an AC fan?
The working principle of a DC cooling fan: It is driven by 4102 DC voltage and electromagnetic induction. 1653 converts electrical energy into machinery to drive the fan blades to rotate, relying on the coil and IC to continuously switch, and the induction magnetic ring drives the fan blades to rotate.
Bearing - an important component in the cooling fan
Bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy.
AC fan, mainly used for cooling electronic products, is a universal small AC fan. Widely used in the home appliance industry, mechanical industry, manufacturing equipment industry, and other products with ventilation and heat dissipation requirements.
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