散热风扇的主要功能就是给各种机械设备、电子设备、变频器等运行时解决热量过高的问题，保证设备有一个温度适中的工作环境，所以说散热风扇有着举足轻重的作用。

　　The main function of the cooling fan is to solve the problem of excessive heat in the operation of various mechanical equipment, electronic equipment, frequency converter, etc., and ensure that the equipment has a moderate temperature working environment, so the cooling fan has a decisive role.

　　散热风扇的分类以及特点：

　　Classification and characteristics of cooling fan:

　　1、混流风扇：

　　1. Mixed flow fan:

　　混流风扇又称对角线流向风扇，初一看，混流风扇和轴流风扇没什么不同，其实，混流风扇的进气是沿轴线的，然而出气却是沿轴线和垂轴线的对角线方向。

　　Mixed flow fan is also called diagonal flow fan. At first glance, there is no difference between mixed flow fan and axial fan. In fact, the inlet of mixed flow fan is along the axis, while the outlet is along the diagonal direction of axis and vertical axis.

　　特点：混流风扇由于叶片和外罩称圆锥形因此致使风压较高，在相同尺寸和其他可比性能下，与轴流风扇相比，离心风扇的噪声更低，因而具有高流率和相对较高的风压。

　　Characteristics: due to the conical shape of blade and cover of mixed flow fan, the wind pressure is higher. Compared with axial flow fan, centrifugal fan has lower noise, so it has high flow rate and relatively high wind pressure.

　　2、直流散热风扇：

　　2. DC cooling fan:

　　直流散热风扇是通过直流电压和电磁感应，由电能转化成机械从而带动风叶转动的，其技术和性能方面已经完全达到了成熟的阶段，并不断有新技术出现。而目前直流散热风扇已被广泛运用于计算机、通讯产品、医疗设备，加热器，冷气机、变频器、柜员机、焊接机、音响设备、环保设备、制冷设备等行业中。

　　Through DC voltage and electromagnetic induction, DC cooling fan is transformed from electrical energy into machinery to drive the wind blade to rotate. Its technology and performance have reached a mature stage, and new technologies are emerging. At present, DC cooling fan has been widely used in computer, communication products, medical equipment, heater, air conditioner, inverter, teller machine, welding machine, audio equipment, environmental protection equipment, refrigeration equipment and other industries.

　　特点：运转稳定性强，散热效果好，使用寿命长的特点。

　　Features: strong operation stability, good heat dissipation effect and long service life.

　　3、轴流风扇：

　　3. Axial fan:

　　轴流风扇的叶片推动空气以与轴相同的方向流动。轴流风扇的叶轮和螺旋桨有点类似，它在工作时，绝大部分气流的流向与轴平行，换句话说就是沿轴线方向。轴流风扇当入口气流是0静压的自由空气时，其功耗最低，当运转时会随着气流反压力的上升功耗也会增加，所以通常装在电气设备的机柜上，有时也整合在电机上。

　　The blades of an axial fan push air in the same direction as the shaft. The impeller of axial-flow fan is similar to propeller. When it works, most of the flow direction is parallel to the shaft, in other words, along the axis direction. When the inlet air flow is free air with zero static pressure, its power consumption is the lowest. When it is running, the power consumption will increase with the rise of air flow reverse pressure. Therefore, it is usually installed in the cabinet of electrical equipment, and sometimes integrated into the motor.

　　特点：具有较高的流率，中等风压的特点，由于轴流风扇结构紧凑，可以节省很多空间，同时安装方便，因此得到广泛的应用。

　　Features: it has high flow rate and medium air pressure. Because of its compact structure, it can save a lot of space and is easy to install, so it is widely used.

　　4、离心风扇

　　4. Centrifugal fan

　　离心风扇工作时，叶片推动空气以与轴相垂直的方向(即径向)流动，进气是沿轴线方向，而出气却垂直于轴线方向。大多数情况下，使用轴流风扇就可以达到冷却效果，然而，有时候如果需要气流旋转90度排出或者需要较大的风压时，就必须选用离心风扇。风机严格而言，也属于离心风扇。

　　When the centrifugal fan works, the blades push the air to flow in the direction perpendicular to the axis (i.e. radial direction). The inlet air is along the axis direction, while the outlet air is perpendicular to the axis direction. In most cases, the cooling effect can be achieved by using an axial fan. However, if the air flow needs to be rotated 90 degrees or the air pressure is large, centrifugal fan must be selected. Strictly speaking, fan also belongs to centrifugal fan.

　　特点：有限流率，高风压。

　　Features: limited flow rate, high wind pressure.

　　目前市场上散热风扇品牌众多，质量参差不齐。散热问题直接影响终端产品的质量，如果想找一款质量可靠的风扇，请认准山东红宝电气。山东红宝电气有限公司提供各种类型的风扇风机，型号齐全，质量可靠。

　　At present, there are many brands of cooling fans in the market, and the quality is uneven. The heat dissipation problem directly affects the quality of the terminal products. If you want to find a reliable fan, please recognize Shandong Hongbao electric. Shandong Hongbao Electric Co., Ltd. provides all kinds of fans with complete models and reliable quality.