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04-22

Fan type selection: In addition to centrifugal fans, other factors need to be considered

Fan type selection: In addition to centrifugal fans, other factors need to be considered When choosing the type of fan, in addition to the common centrifugal fan, there are various other types of fans to choose from, such as axial flow fans, mixed flow fans, etc. These fans vary in performance, characteristics, and applicable scenarios. This article will introduce the types of these fans and explore other factors that need to be considered when selecting fans, in addition to centrifugal fans. Axial flow fan An axial fan is a fan blade structure installed inside the casing that blows air along the rotating axis direction. The characteristics of this type of fan are small air volume, low noise, and relatively low air pressure. Therefore, axial fans are usually suitable for situations that require low air pressure but require a lot of cooling, such as small air conditioning systems, computer cooling, etc. When selecting an axial fan, factors such as speed, noise, air volume, and lifespan need to be considered. Mixed flow fan A mixed flow fan is a fan blade structure that combines the high airflow of a centrifugal fan with the low noise of an axial fan. Compared to centrifugal fans, mixed flow fans have a higher air volume but lower noise levels. Therefore, mixed flow fans are suitable for situations that require a lot of ventilation and cooling, such as large computer rooms, warehouses, etc. When choosing a mixed flow fan, factors such as air volume, noise, lifespan, and price need to be considered. When selecting a fan type, in addition to centrifugal fans, various other factors need to be considered, such as the characteristics and applicable scenarios of axial flow fans, mixed flow fans, and other types of fans. Meanwhile, it is necessary to select high-quality products with suitable installation methods, power requirements, and lower maintenance costs based on specific application scenarios and needs. This can ensure the normal operation of the equipment, improve work efficiency and comfort. Capital Technology Co., Limited is the chief agent of SANYO DENKI, one of the leading enterprises of the cooling fan industry. We are a factory who also have our own independent brand CAPITAL product series. The main products are cooling fan, DC/AC fan, radiator, filter, reactor etc. We can provide customer with the most professional and perfect technical support, welcome to contact me at anytime at rainlee@szcpt.com.
04-11

Is it better to use DC or AC for the cooling fan of the communication cabinet

Is it better to use DC or AC for the cooling fan of the communication cabinet The choice of DC Fan or AC Fan for the communication cabinet cooling fan mainly depends on factors such as cooling requirements, energy efficiency, control accuracy, and application environment: 1. Advantages of DC fans: Energy saving: DC fans are more energy-efficient than AC fans because DC motors have higher efficiency, especially at low speeds where efficiency advantages are more pronounced. Accurate control: DC fans can precisely control their speed through PWM (pulse width modulation) signals, achieving on-demand heat dissipation, which helps reduce noise and save energy. -Noise and stability: DC fans have better noise control, more stable air volume and speed control, and a relatively long service life. Widely used: DC fans come in a variety of sizes and models, with a wider range of applications, making them more suitable for modern servers that require flexibility and intelligence in heat dissipation. 2. Advantages of AC fans: Initial cost: In some cases, the initial cost of AC fans may be relatively low. Industrial use: AC fans are commonly used in some industrial settings, especially in environments that do not require precise speed control and are sensitive to initial inputs. Their simple and reliable structure has certain advantages. Considering the demand for cooling efficiency, noise control, energy conservation, and intelligent management in modern servers, DC fans are usually more popular. They can better meet the heat dissipation needs of servers under different load conditions, and can also achieve precise speed adjustment through intelligent temperature control systems, which is beneficial for improving the overall performance and service life of servers. However, the specific type of fan to choose still needs to be comprehensively judged based on the actual project budget, cooling requirements, and server design specifications. Capital Technology Co., Limited is the chief agent of SANYO DENKI, one of the leading enterprises of the cooling fan industry. We are a factory who also have our own independent brand CAPITAL product series. The main products are cooling fan, DC/AC fan, radiator, filter, reactor etc. We can provide customer with the most professional and perfect technical support, welcome to contact me at anytime at rainlee@szcpt.com.
03-28

Knowledge of Industrial Cooling Fans

Knowledge of Industrial Cooling Fans Air has the function of heat dissipation. It transfers heat energy and can be compressed. When it is compressed, static pressure transfers air fluid. Although its thermal conductivity is relatively low, compared to other fluids, air is the most commonly used thermal conductive substance. It is readily available and can be applied to heating surfaces everywhere Air usually returns from the surrounding atmosphere to the main body of the heat source together. The main body will be cooled or cooled, after all, the object is always in the air. That is, using another substance to cool a heat source, ultimately reducing the temperature of the heat source is still air. Usually, the heat dissipation of the heat source is achieved through direct or indirect air flow Let's first learn about the cooling fan [axial flow fan]! Principle: The working principle of a fan is achieved through energy conversion, namely: electrical energy → electromagnetic energy → mechanical energy → kinetic energy. The circuit principle is generally divided into various forms, and the performance of the fan will vary depending on the circuit used Composition of axial flow fan: Fan frame, blades, bearings, PCB control circuit, drive motor Speed: Speed refers to the speed at which a fan rotates, usually measured by the number of turns it turns in one minute, i.e. RPM. Speed is related to the number of turns and diameters of the electromechanical winding, the diameter of the wire, the outer and bottom diameters of the fan blade and impeller, the shape of the blade and the bearings used, and other factors. As the speed increases, the air volume correspondingly increases The size of the rotational speed value to a certain extent represents the size of the air flow. When the conditions are constant, the higher the rotational speed, the greater the noise and vibration. Therefore, when the air flow meets the heat dissipation requirements, low-speed fans should be used as much as possible. General rotational speed size [using DC axial flow fans as an example]: 2510 fans at 7000 to 12000 rpm; 3010 fan, 5000-9000rpm; 4010 Fan 5000-7000rpm; 5010 Fan 3500-5000rpm; 6025 fan 2600-4500rpm; 7025 fan, 2400-3600rpm; 8025 fan 2000-3500rpm; 9225 fan 1600-3100rpm; 12025 fan 1200-2500rpm; 12038 fan 2000-3200rpm The fan speed can be tested through BIOS or other built-in monitoring software on the motherboard when starting the computer; It can also be tested using a speed tester. Note that the first two methods must be measured by a fan that supports speed measurement function The main performance parameters of a cooling fan include flow rate, pressure, speed, power, etc The electrical structure of the cooling fan: The cooling fan consists of the following three parts: 1. Control part: composed of Hall magnetic effect switches, transistors, resistors and other components. Its function is to control the direction of current in the stator coil winding 2. Motor winding part: composed of silicon steel sheet, enameled wire, and upper and lower insulation frames. The function of the silicon steel sheet is to guide the magnetic poles out to determine the strength of N and S. The winding determines the directionality of the magnetic field lines, including N and S poles and control signals, constantly changing the polarity of the winding, driving the magnetic frame to operate, and achieving the purpose of doing work 3. Fixed magnetic field section: The fixed magnetic field is provided by the adhesive magnetic field to generate power during rotation Air volume and air pressure: There are two methods for testing air volume and air pressure: one is to use a wind tunnel instrument for testing, and the other is to use a double box method for testing. However, for general users, there is no such equipment, and only the data provided by the manufacturer can be used as a reference, and the final cooling effect depends on *Air volume: Air volume refers to the product of the plane velocity of the ventilation area of the fan. Ventilation area is the area of the outlet minus the projection area of the vortex tongue. Plane velocity is the gas movement speed of the airflow through the entire plane, in m3/s. When the plane velocity is constant, the larger the outer diameter of the fan blade impeller, the larger the ventilation surface area, the greater the air volume. Plane velocity is determined by the speed and wind pressure of the rotor. When the ventilation area is constant, the larger the plane velocity, the greater the air volume. The larger the air volume, the greater the heat absorption of the air. When the air flow is transferred, more heat can be taken away, and the fan heat effect is more obvious *Wind pressure: In order to conduct normal ventilation, it is necessary to overcome the resistance within the fan's ventilation stroke. The fan must generate pressure to overcome the supply air resistance. The measured change in pressure is called sta
03-22

How to adjust the continuous rotation of the SanAce 6025 cooling fan

How to adjust the continuous rotation of the SanAce 6025 cooling fan The importance of a cooling fan is self-evident for any electronic device, especially those that require high-power operation and generate a large amount of heat. Among them, the 6025 DC cooling fan has been widely used in many application scenarios due to its high efficiency, low noise, and long lifespan. However, sometimes we encounter a problem: this type of fan keeps running and seems unable to be manually stopped. How should we make adjustments in this situation? Firstly, we need to clarify that if the DC cooling fan keeps running, there may be multiple reasons for it. Possible reasons include problems with the control circuit of the fan, or insufficient lubrication of the fan bearings. Therefore, we need to conduct specific analysis based on the specific situation. 1、 Check the control circuit If there is a problem with the control circuit of the fan, such as a damaged control chip or a short circuit in the connecting circuit, then the control circuit needs to be repaired. If the control chip is damaged, it may be necessary to replace it with a new one; If it is a short circuit in the circuit, it needs to be repaired. 2、 Check the lubrication of the bearings If the bearings of the fan are not lubricated enough, it will increase the friction force of the fan, causing it to keep rotating. In this case, we can solve the problem by adding lubricating oil to the bearings or replacing them with new ones. 3、 Adjusting speed control If both of the above situations are ruled out, it is possible that there is a problem with the speed control of the fan. In this case, we can try adjusting the speed control parameters of the fan or replace it with a new control board. 4、 Regular maintenance Regular maintenance is crucial for any mechanical equipment. Regular inspection and lubrication are also essential for DC cooling fans. This can not only avoid malfunctions caused by insufficient lubrication, but also extend the service life of the fan. Overall, we need to analyze and adjust the issue of the 6025 DC cooling fan running continuously based on specific circumstances. Only through careful inspection and professional maintenance can the root cause of the problem be identified and resolved. Meanwhile, regular maintenance and upkeep are also important means to ensure the normal operation of equipment. Capital Technology Co., Limited is the chief agent of SANYO DENKI, one of the leading enterprises of the cooling fan industry. We are a factory who also have our own independent brand CAPITAL product series. The main products are cooling fan, DC/AC fan, radiator, filter, reactor etc. We can provide customer with the most professional and perfect technical support, welcome to contact me at anytime at rainlee@szcpt.com.
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