With the gradual development of electronic technology. As the times approach, electronic technology is becoming more and more sophisticated, and people's requirements for the performance of electronic appliances are also becoming higher and higher. Thus, in

When we go to buy our favorite computer, we will also pay attention to the problem of computer noise at the same time. Everyone wants their computer to be completely silent. So what kind of fan is silent enough, and how to know if your computer fan is silent? Here, Jingxin Hardware and Plastic Products (Huizhou) Co., Ltd. will explain to you:

Most people think that the power supply of the 12cm fan is the quietest, but it is not. In fact, the power supply of the 8cm fan is much quieter than the 12cm fan at the same speed. Why do many users stubbornly think that 12cm fans are quieter? Because the term "12cm large air volume silent fan" appears in almost every power supply article, how many times have the wrong views been repeated and spread a thousand times? Countless consumers are brainwashed by concepts created by manufacturers. Users who like quietness usually choose the power supply of a 12cm fan. Are large fans silent? In fact, at the same speed, the noise of the 12cm fan is much louder than that of the 8cm fan, and the noise is not an advantage of a large fan at all. The reason why mainstream power supplies generally use 12cm fans is that at the same speed, the air volume of 12cm fans is larger than that of 8cm fans, and the heat dissipation performance is better.

Whether a power supply silent fan is silent or not depends entirely on how the power supply manufacturer designs the fan's temperature control system. According to our test experience, when the computer is in standby, the power supply is in a light load state, and the power supply fan speed is about 1000RPM. At this time, most of the power supplies are very silent. When the power supply is under medium load and the temperature of the internal components rises, the fan starts to speed up gradually. Most of the "silent power supplies" will be exposed during medium load. At this time, the fan speed will generally reach about 1400RPM, and the noise is very loud. So why don't power supply manufacturers set a lower fan speed to bring users a quiet use environment? The reason is very simple. The reduction of the fan speed and the increase of the working temperature of the power supply will lead to a sharp reduction in the life of the power supply, and the 3-year warranty period promised by the manufacturer cannot be fulfilled.

Four reasons for the failure of cooling fan

Cooling fans are widely used in many fields. The operation of the machine requires the fan to exhaust heat to ensure normal operation. Once the cooling fan itself has a problem, it will directly affect the service life of the equipment. So what is the root cause of the cooling fan failure? Below, Jingxin Hardware and Plastic Products (Huizhou) Co., Ltd. will explain the reasons for the failure of the cooling fan.

The failure of the cooling fan is generally caused by the following four reasons.

First, the reasons for the cooling fan design:

The design of the cooling fan is improper, and the coordination of each part is not considered in the design, and the dynamic characteristics are poor, causing vibration or noise when the machine is running. The structure is unreasonable, the use of steel is not appropriate, resulting in stress concentration, the body material is prone to cracks, the material of the parts is not good, the strength cannot meet the standard, and accidents are prone to occur during use.

Second, the reasons for improper operation of the cooling fan:

The process parameters of the machine deviate far from the design value, which often causes the machine to maintain over-speed and overload operation during operation, or operate at low speed and low load, which cannot achieve the working performance of the machine; the operating point is close to or falls into the critical speed area. , the lubrication or cooling of the cooling fan is not in place; improper operation during starting and stopping the machine or during the acceleration and deceleration process, resulting in the body temperature not reaching, uneven thermal expansion, or overheating of the machine, causing the machine to anneal, losing the strength it should have .

Third, the reasons for the deterioration of the cooling fan itself:

The long-term operation of the machine causes fatigue of shafts and other parts, causing partial damage to the rotor, and the parts are affected by the impact force to cause surface pitting and partial wear.

Fourth, the reasons for the installation and maintenance of the cooling fan:

The cooling fan is improperly installed in the mechanical equipment, the parts are misaligned, or the shafting is not properly aligned, resulting in a large preload, improper placement of the rotor, and failure to perform maintenance in accordance with regulations, which destroys the original coordination system of the machine.