风机依据气流进入叶轮后的活动方向分为：轴流式风机、离心式风机和斜流(混流)式风机。
Fans are divided into axial flow fans, centrifugal fans, and oblique flow (mixed flow) fans based on the direction of airflow entering the impeller.
风机按用处分为压入式部分风机(以下简称压入式风机)和隔爆电动机置于流道外或在流道内，隔爆电动机置于防爆密封腔的抽出式部分风机(以下简称抽出式风机)。
The fan is divided into two types according to usage: a press in partial fan (hereinafter referred to as a press in fan), an explosion-proof motor placed outside or inside the flow channel, and an explosion-proof motor placed in the explosion-proof sealing chamber of an extraction partial fan (hereinafter referred to as an extraction fan).
风机依照加压的形式也能够分单级、双级或许多级加压风机。如4-72是单级加压，高端风机则是多级加压风机
Fans can also be divided into single stage, double stage, or multi-stage pressurized fans according to the form of pressurization. For example, 4-72 is a single stage pressurization fan, while high-end fans are multi-stage pressurization fans
风机依照用处区分能够分为：轴流风机、混流风机、房顶风机、空调风机等。
Fans can be divided into axial flow fans, mixed flow fans, roof fans, air conditioning fans, etc. according to their usage.
风机按压力可分为低压风机、中压风机、高压风机。
Fans can be divided into low-pressure fans, medium pressure fans, and high-pressure fans according to pressure.
按出口压力（升压）分为：通风机（≤1.5万Pa）、鼓风机（1.5～35万Pa）、压缩机（≥35万Pa）。
According to the outlet pressure (boost), it can be divided into: ventilation fan (≤ 15000 Pa), blower (15-250000 Pa), and compressor (≥ 350000 Pa).