DC cooling fan has two positive and negative power lines. When installing the cooling fan, if the positive and negative lines are connected reversely by wrong operation, will the cooling fan burn out?

Whether the axial cooling fan is burnt out or not is mainly related to the IC Design of the cooling fan. In general, the drive IC with double wire winding method has internal protection design. If the positive and negative power lines are connected reversely, it will show the phenomenon of short circuit. At this time, the current of the cooling fan will be much higher than that under normal conditions. The motor current is large and its temperature rise is high. When the temperature reaches a certain degree, the driving IC will be damaged due to overheating and the cooling fan will be burned out.

Some of the single winding drive IC has no internal polarity protection. If the motor stator PCB is not designed with polarity protection, it may burn out the IC instantly when connected.

In order to prevent the ventilation cooling fan from burning out due to positive and negative polarity connection, a diode is added on the PCB of the cooling fan to design polarity protection, that is, when the polarity of the cooling fan is connected reversely, the current is zero, showing no power supply, so it can protect the cooling fan from burning out.

It is normal for the cooling fan to make a small amount of noise during use. As long as we control the noise within a reasonable range, it will have no effect on the cooling fan. So what should be done if the noise exceeds the normal range under special circumstances? The following points are the methods to effectively reduce the noise of AC axial cooling fan:

1. System Impedance

The higher the impedance of the cooling system and exhaust fan, the more noise out of the normal range. The higher the system impedance, the greater the air flow required for cooling. Therefore, in order to minimize noise, the system impedance must be minimized.

2. Airflow interference

Turbulence caused by obstacles encountered in the airflow path can generate noise. Therefore, it is necessary to avoid any obstructions of the cooling fan, especially in the range of the air inlet and outlet, which can reduce the noise.

3. Temperature rise

In a system, the air volume required for cooling is inversely proportional to the allowable temperature rise. Therefore, if the limit on the allowable temperature rise is slightly relaxed, the noise can be reduced.

4. Voltage change

Voltage variations can affect cooling fan noise. The higher the cooling fan voltage, the greater the vibration and noise caused by the increased rotational speed. Therefore, if the air volume is suitable, try to choose a low-voltage cooling fan.

5. Fan size

Because the high rpm exhaust fan produces more noise than the low rpm exhaust fan, and when the air volume is the same, the large-sized low rpm exhaust fan is usually quieter than the small-sized high rpm exhaust fan. Therefore, when the noise requirements are higher, a larger size low rpm cooling fan can be selected.

If you are just looking for a 110v ac cooling fan manufacturer, then we are a good choice. Guangdong Chungfo Electronic Technology Co., Ltd. focuses on the cooling needs of equipment in various industries, specializing in the research and development and supply of cooling fans such as DC cooling fans, AC cooling fans and DC blowers.We can provide professional customization of cooling fans according to customer needs.

In recent years, LED lighting has become an increasingly popular choice in residential and commercial lighting applications. However, like any technology, it is important to address potential issues such as overheating. This is the function of the cooling fan.

In today's world, the importance of proper heat dissipation cannot be overemphasized. This is especially true for electronic devices, as they generate a large amount of heat during operation. To address this issue, cooling fans have become an indispensable part of many electronic devices, including LED lighting. A type of heat dissipation fan commonly used for this purpose is an axial flow fan.

The axial cooling fan is designed to move air in a specific direction, parallel to the fan shaft. This makes them very suitable for cooling electronic devices that generate heat in specific areas. By guiding the air towards the heat source, these fans can effectively dissipate heat and maintain the safe operating temperature of the equipment.

When considering purchasing axial fans, it is important to consider the axial flow fan wholesale price. It is also important to consider the specific requirements of the application, such as the voltage required for fan operation, axial cooling fan 5v, axial cooling fan 24v, axial cooling fan 110v, axial cooling fan 220v, etc.

In addition to cooling LED lighting, axial fans can also be used for various other applications, such as equipment ventilation and various white goods. Cooling fans come in various sizes and configurations to meet your specific needs.

Overall, axial cooling fans are an important component of maintaining the safe and effective operation of electronic devices, including LED lighting. By selecting reputable cooling fan suppliers and carefully considering your specific application needs, you can ensure that your cooling fans will provide reliable and effective performance.

Guangdong Chungfo Electronic Technology Co., Ltd. is dedicated to the equipment cooling needs of various industries and is a professional manufacturer of cooling fans. We can provide professional customization of cooling fans according to customer needs. If you have any needs in this area, please feel free to contact us.

In general, the higher the fan speed, the greater the air volume. The cooling fan generates airflow by rotating the blades, and an increase in speed causes the blades to push more air per minute, and when more air can be pushed, the volume of air will also increase. So when customers pursue high air volume, they often choose high rpm exhaust fans.

(12038 DC fan is used as an example.)

It should be noted that although there is a positive correlation between speed and air volume, the relationship is not linear. In some cases, as the rotational speed increases, the increase in air volume may slow down. This is due to the influence of the fan's design and performance characteristics as well as hydrodynamic effects.

Hydrodynamic effects are physical phenomena and behaviors that occur when involving the movement of fluids, such as air. First of all, when the fan rotates, there will be resistance between the blade and the air, and the larger resistance will reduce the air volume, while the smaller resistance will increase the air volume. In addition, the shape and Angle of the fan blades also affect the pressure difference of the air, which in turn affects the size of the air volume.

Secondly, during the operation of the fan, the turbulence generated by the rotating blade will lead to the instability of the air flow, thus reducing the air volume. The shear layer will form higher and lower velocity airflow regions, which will also affect the distribution and size of the air volume.

In addition, the design of the import and export area, boundary layer effect and fan rotation will have an impact on the fan; And other factors of the cooling fan, such as blade design, blade number, fan diameter and motor power, will also affect the air volume.

Guangdong Chungfo Electronic Technology Co., Ltd. is dedicated to the equipment cooling needs of various industries, is a professional cooling fan manufacturer. If you are looking for axial cooling fans, cross flow cooling fans or other types of cooling fans, please feel free to contact us.

Last time mentioned the advantages of two frameless cooling fans, and now the remaining two points are also complete.

(3) Provide better heat dissipation effect: The design of the frameless heat dissipation fan makes the fan blade closer to the heat dissipation target, providing more direct and concentrated air flow. The fan can send cold air into the device more efficiently and expel hot air quickly, thereby improving the heat dissipation effect. This helps reduce the temperature of the equipment and protects the equipment from overheating.

(4) Easy to clean and maintain: frameless cooling fans have no frame and grille, which makes cleaning and maintenance more convenient. Users can more easily remove dust and debris, maintaining the performance and life of the fan. Frameless design also reduces the possibility of dust buildup and reduces the frequency of maintenance.

In summary, frameless cooling fans bring users a more efficient, convenient and comfortable cooling experience. Chungfo Electronic Technology Co., Ltd. not only produces high-quality AC brushless cooling fans, brushless fans, but also produces axial cooling fans, as long as you need, we also have specialized customized services, welcome major buyers to come to consult!

The cooling fan is an important component for heat dissipation in electronic devices, and different sizes of fans are suitable for different products and application environments. As a professional wholesale mini axial cooling exhaust fan manufacturer, we offer you ac axial cooling fan in various sizes and applications. Here are some common cooling fan sizes and their corresponding product applications:

1. 25mm x 25mm

Application: Usually used in small electronic devices, such as single board computers, mini PCS and small network devices.

2. 40mm x 40mm

Applications: For some smaller cases, power adapters, routers, switches and some industrial equipment.

3. 60mm x 60mm

Application: Suitable for medium-sized network devices, set-top boxes, NAS devices and other devices that require moderate heat dissipation performance.

4. 80mm x 80mm

Applications: Common in desktop power supplies, chassis cooling, servers and some high-performance consumer electronic devices.

5. 92mm x 92mm

Application: For high-end desktops, workstations, servers, etc., need better heat dissipation effect.

Choose the right axial cooling fan to ensure efficient operation and durability of the equipment!