The miniature cooling fan is dust-proof and noise-proof. The miniature cooling fan is a small and mini cooling fan, which is used in a small space. With the development of technology, the more convenient the equipment we request, the better. Therefore, the miniature cooling fan Applications will become more and more common. Today we will discuss the noise elements of micro cooling fans. We all know that the noise of micro cooling fans is smaller than that of larger ones. So what factors are related to it?
Regarding computer cooling fans, due to the long working hours each day, in order to prolong the life of the cooling fans and reduce the interference of dust on the cooling fans, many customers request that the cooling fans have a dust-proof effect. Regarding a range of cooling fan manufacturers, such as the commonly used 8CM and 9CM cooling fans in computers, it is possible to do dust-proof and waterproof treatment, and the motor is completely sealed, because there is enough space.
Regarding the ultra-thin miniature fan below 10mm, such as 20*20*6, 30*30*7mm and other specifications, its own thickness is only so 7mm, if you want to add a dust-proof inside the fan blade and outside the motor It is really not easy to cover the motor completely, because the space is too small.
Aiming at the dustproof problem of miniature cooling fans, Yirongchuan Technology recommends that customers use our ultra-thin double-ball cooling fans. The balls are imported from Japan and are not easy to enter. Only the bearings do not enter dust, coils, and PCB accessories. Dust also has little effect, so it has strong dustproof ability, which can ensure that the life of the cooling fan is more than twice as long as that of the oil-bearing cooling fan.
The noise index of a micro fan is an important parameter that customers care about. When ordinary manufacturers provide micro fans, they will also provide specifications. One item is the noise value, in decibels (db). Then, micro fan manufacturers How to control fan noise?
The noise of the micro fan mainly controls the following two
First, the wind sound when the fan is running (this is related to the speed, the speed is high, the wind sound is louder), so if you control the speed of the micro fan, the wind sound can be effectively controlled. In response to wind noise, Yirongchuan Technology requested a special agency to build a soundproof room with a background noise of 16DB. Because the sound is almost inaudible, we call it an anechoic room. Then, the micro fan without other noises is removed from the sound. The distance of the sensor is 100 cm, and the noise value is tested.
Second, the mechanical noise, friction, electromagnetic sound, and trembling sound other than wind when the fan rotates are all content to be controlled. Regarding mechanical noise, friction sound, and electromagnetic sound, we use human ear audiometry in a relatively quiet soundproof room. The trembling sound is tested by comparing the feel of the sample.
