离（lí）心风机：压头大（dà）、流量小。轴流风机的气流方（fāng）向垂直与叶片的旋转方向，离心风机的（de）气流方向切于叶片（piàn）旋（xuán）转（zhuǎn）方向。选用什么形（xíng）式的（de）风机最主要（yào）的是考虑流量及系统（tǒng）阻力损失.轴流风机的特点是流体沿着扇叶的轴（zhóu）向（xiàng）流过。比如电风扇和（hé）家庭里（lǐ）的排气扇。而离心式是将（jiāng）流体从风（fēng）扇的轴向吸（xī）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（jī）.轴流风机:流量大、压（yā）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（jī），最大的缺（quē）点就是体积大，正因为两者的构造（zào）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（fēng）机大很（hěn）多，但是噪音会相对小，所以轴流风机多用在消防通风（fēng）方面，平时使用（yòng）的（de）风机多选用离心风机。 在酒店类高档（dàng）的建筑里，很多要求（qiú）优先使用离（lí）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（fēng）叶的轴同方向的气流。离心，靠（kào）离心力把气流甩出来（lái）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（bǐ）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（zhóu）流风（fēng）机和柜式离心风机（jī）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（ké）的直径，而离心风机就没有（yǒu）这方面的局限，可以采用叶片前倾或后倾叶片，对风量风（fēng）压的要求适应更（gèng）广。而且柜内能做消声处理，在噪（zào）声指标上有很明（míng）显的优（yōu）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（zhuǎn）数较（jiào）低，电机功率大，耗电相多多些（xiē）。如果平时常用通（tōng）风系统（tǒng），尽量采用柜式（shì）离心风机，消防排烟不常用的系统，采（cǎi）用高温（wēn）轴流（liú）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（bǐ）轴流（liú）风机（jī）在大风量和大（dà）风压的组合选择上更有优势(主（zhǔ）要指风机效率和（hé）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（zài）于：
The difference between centrifugal fan and axial fan is that:
1、离（lí）心风机改变了风管内介（jiè）质的流向，而轴流风机不改变风管内介质的流（liú）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（hòu）者安装较简单;
3, the former installation is more complex, and the latter is simpler to install.
4、前者（zhě）电机与（yǔ）风机（jī）一般（bān）是通过轴（zhóu）连接的，后者电机一（yī）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（děng）等，后者常安（ān）装在风管当中、或风管出口前端（duān）。
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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