离心风机：压头大、流量小。轴流风机的气流方向垂直与叶片的旋转方向，离心风机的气流方向切于叶片旋转方向。选用什么形式的风机最主要的是考虑流量及系统阻力损失.轴流风机的特点是流体沿着扇叶的轴向流过。比如电风扇和家庭里的排气扇。而离心式是将流体从风扇的轴向吸入后利用离心力将流体从圆周方向甩出去，比如鼓风机，抽油烟机.轴流风机:流量大、压头小。
Centrifugal fan: large head and small flow. The flow direction of axial fan is perpendicular to the rotating direction of blade, and the flow direction of centrifugal fan is tangent to the rotating direction of blade. The most important thing to choose is to consider the flow rate and system resistance loss. The axial flow fan is characterized by the axial flow of fluid along the fan blade. For example, fans and household exhaust fans. The centrifugal type is the axial suction of fluid from the fan after the use of centrifugal force will be the fluid from the circumferential direction to throw out, such as blowers, smoke pumping machines.
离心风机较之轴流风机，最大的缺点就是体积大，正因为两者的构造不同，在相同风量，相同风压的情况下，离心风机的耗电量要比轴流风机大很多，但是噪音会相对小，所以轴流风机多用在消防通风方面，平时使用的风机多选用离心风机。 在酒店类高档的建筑里，很多要求优先使用离心风机
The biggest disadvantage of centrifugal fans is that they are bulky compared with axial-flow fans. Because of their different structures, centrifugal fans consume much more electricity than axial-flow fans under the same air volume and pressure, but the noise will be relatively small. Therefore, axial-flow fans are often used in fire fighting and ventilation. Centrifugal fans are selected. Ting Da import bearing Miss Wang in the high-grade hotel buildings, many require the priority use of centrifugal fan.
轴流，就是与风叶的轴同方向的气流。离心，靠离心力把气流甩出来的。
Axial flow is the same direction as the axis of the blade. Centrifugation, the air is thrown out by centrifugal force.
风的流向和轴是平行的就叫轴流风机，(比如消防的排烟风机)反之就是离心风机，(比如风机盘管的风机).
The flow direction of the wind is parallel to the axis is called axial fan (such as fire exhaust fan) and vice versa is centrifugal fan (such as fan coil fan).
轴流风机和柜式离心风机的根本区别在风机的机械结构上：
The fundamental difference between axial fan and cabinet centrifugal fan is in the mechanical structure of the fan.
轴流风机的叶片直径局限于外壳的直径，而离心风机就没有这方面的局限，可以采用叶片前倾或后倾叶片，对风量风压的要求适应更广。而且柜内能做消声处理，在噪声指标上有很明显的优势。
Axial fan blade diameter is limited to the diameter of the shell, and centrifugal fan has no limitations in this respect, can be used blade tilt forward or backward blade, wind pressure requirements to adapt to a wider range. Moreover, the cabinet can make noise reduction, and has obvious advantages in noise indicators. Ding Da import bearing Miss Wang
由于一般采用电机的转数较低，电机功率大，耗电相多多些。如果平时常用通风系统，尽量采用柜式离心风机，消防排烟不常用的系统，采用高温轴流风机更经济合理!
Generally speaking, the number of motors is low, the power of the motor is large, and the power consumption is much more. If the usual ventilation system, try to use cabinet centrifugal fan, fire smoke exhaust system is not commonly used, the use of high-temperature axial fan is more economical and reasonable!
离心风机比轴流风机在大风量和大风压的组合选择上更有优势(主要指风机效率和噪声指标上)!
Centrifugal fans have more advantages than axial flow fans in the selection of combination of high wind volume and high wind pressure (mainly refers to fan efficiency and noise index)!
离心风机和轴流风机区别在于：
The difference between centrifugal fan and axial fan is that:
1、离心风机改变了风管内介质的流向，而轴流风机不改变风管内介质的流向;
1. The centrifugal fan changes the flow direction of the medium in the duct, while the axial fan does not change the flow direction of the medium in the duct.
2、前者风量和风压都很大，后者风量和风压都很低;
2, the former has great air volume and wind pressure, and the latter has low air volume and wind pressure.
3、前者安装较复杂，后者安装较简单;
3, the former installation is more complex, and the latter is simpler to install.
4、前者电机与风机一般是通过轴连接的，后者电机一般在风机内;
4, the former motor and fan are usually connected by shaft, and the latter motor is usually in the fan.
5、前者常安装在空调机组进、出口处，锅炉鼓、引风机，等等，后者常安装在风管当中、或风管出口前端。
5. The former is often installed at the inlet and outlet of air-conditioning units, boiler drum, induced draft fan, etc. The latter is often installed in the air duct, or the front end of the air duct outlet.
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